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Fluid handling conduit in situ

Subclass of:

073 - Measuring and testing

073037000 - WITH FLUID PRESSURE

073040000 - Leakage

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
0734005A0 Using acoustic detectors 23
Entries
DocumentTitleDate
20120160013LINE LEAK DETECTOR AND METHOD OF USING SAME - An apparatus for detecting a leak in a conduit line includes a housing in fluid communication with the line, a valve including a valve seat and a valve element movable relative to the seat between opened and closed positions, a bypass line around the valve, a flow detector coupled to the bypass line for detecting fluid flow therethrough, and a mechanism configured to urge the valve element toward the closed position and to maintain the valve element in the closed position until a threshold pressure drop is reached. The mechanism may operate on the principle of magnetism.06-28-2012
20130031960SEAL GAS MONITORING AND CONTROL SYSTEM - A monitoring and control system for a seal gas supply system for a non-contacting gas seal. The supply includes several gas conditioning elements or units. The monitoring and control system includes an evanescent wave sensor to sense the presence of liquid in the seal gas. Multiple sensors to sense the temperature and pressure of the treated seal gas are disposed at the outlet of the conditioning elements. A programmable logic device is provided with information regarding the phase of the gas at various pressures and temperatures and compares the sensed data to the baseline data. Recognition of liquid concentrate results in an output signal.02-07-2013
20130036796ENCLOSURE FOR LEAK DETECTOR - A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detection subassembly including at least one leak detection sensor and at least one circuit.02-14-2013
20100043536CRADLE ASSEMBLY FOR A PRESSURE DECAY LEAK TESTER - A cradle assembly for a pressure decay leak tester is provided. The assembly operatively receives a printhead integrated circuit carrier having a plurality of printing fluid paths defined therein, respective fluid inlets in fluid communication with respective fluid paths and a locating formation to facilitate correct location of the carrier on the tester. The assembly includes at least one complementary locating formation for engaging the locating formation of the carrier, and at least one fluid outlet for charging the carrier with fluid via a respective fluid inlet of the carrier. Also included is a clamping device for clamping the carrier to the fluid outlet, so that the integrity of the fluid paths is observable via pressure decay testing, and a control system operatively connected to the clamping device for controlling operation of the clamping device.02-25-2010
20100043535LEAK TESTER FOR A CARRIER FOR PRINTHEAD INTEGRATED CIRCUITRY - Provided is a leak tester for a carrier for printhead integrated circuits. The carrier has at least one fluid inlet in fluid communication with a plurality of fluid outlets via discrete fluid paths. The tester includes a support assembly that includes at least one receptacle shaped and configured to receive at least one respective carrier, and a pressurized fluid supply arranged on the support assembly and configured to supply pressurized fluid to the fluid inlets, the pressurized fluid supply incorporating a sealing mechanism configured to engage the fluid inlets in a sealing manner. The tester also includes a pressure measurement arrangement operatively arranged with respect to the pressurized fluid supply to measure pressure applied at the fluid inlets, and a controller operatively connected to the pressure measurement arrangement and pressurized fluid supply, the controller being configured to control the fluid supply to charge the carrier with pressurized fluid until a predetermined pressure is reached, and to monitor the pressure for a predetermined period of time.02-25-2010
20130081449MONITORING STATE OF FLUID TRANSPORT PIPE - A method, apparatus, and system for monitoring the state of a fluid transport pipe. In one embodiment, there is provided a method of monitoring the state of a fluid transport pipe, the method including: causing a monitor to move along with a fluid inside the fluid transport pipe, the monitor including an elastic gas container and being configured to adjust the volume of the elastic gas container based on ambient pressure of the elastic gas container; and measuring and recording, by the monitor, one or more types of environmental data inside the fluid transport pipe for determining the state of the fluid transport pipe. In other embodiments, there are further provided an apparatus and system for monitoring a state of a fluid transport pipe.04-04-2013
20090158818Method of Discovering Leakage in a Heat Exchanger - A method of discovering leakage in a heat exchanger, wherein the method is carried into effect on an intact heat exchanger which, together with surrounding conduits, is filled with water. The heat exchanger preferably has requisite pressure indicators mounted between each section, as well as requisite shut-off valves. The method comprises applying in each section of the heat exchanger an excess pressure on one side which is enclosed there, while the other side is at normal pressure. The pressure is enclosed during a period of time and is monitored during this period of time.06-25-2009
20080196481Deriving Information About Leaks in Pipes - A method and system for deriving fluid leak information are described. A plurality of sealing elements are introduced into the pipeline at a location upstream of the leak, and at least some of the sealing elements are drawn towards the leak to cause a sealing event which reduces fluid seepage. A pressure change caused by the sealing event is detected, and associated time data is used to derive information about the leak. In one embodiment, leak location information is derived. In an alternative embodiment, pressure transient information is used to derive leak size information.08-21-2008
20100005860DEVICE FOR CONVEYING A SUBSTANCE PROVIDED WITH AN OPTICAL LEAK DETECTOR - A device for conveying a substance that comprises: a first duct for containing the substance; an optical fiber connected to the first duct and extending along the duct, the optical fiber including several detection members spaced along its length, each detection member having a separate reflection spectrum that varies with the presence of the substance to be detected; a control device including a light source capable of emitting a light in the reflection spectrum of each detection member, a light receiver capable of detecting the light amplitude in the detection spectrum of each detection member, and an analysis module capable of determining the presence of a leak of the substance based on the light amplitude provided by the light receiver.01-14-2010
20120216600SELF-MONITORING FLOW MEASURING ARRANGEMENT AND METHOD FOR ITS OPERATION - self-monitoring flow measuring arrangement includes a pipeline system flowed through by a medium, a control device installed in the pipeline system on the inlet-side, which varies a flow rate of the total medium flowing into the pipeline system according to a predetermined time-dependent periodic change profile; at least one flow measuring device installed in the pipeline system, which is located at a measuring location, which is located behind the control device in the flow direction, and through which the entire medium flowing through the pipeline system flows, and which measures the flow rate (Q08-30-2012
20100269570DUAL STRIPPER RUBBER CARTRIDGE WITH LEAK DETECTION - A method to detect leaks in a rotating control device includes positioning a leak detection device in communication with a chamber located between an upper sealing element and a lower sealing element of the rotating control device, and signaling with the leak detection device when a pressure of the chamber exceeds a selected critical pressure.10-28-2010
20130067994SYSTEMS AND METHODS FOR DIAGNOSING AN ENGINE - Presently disclosed are methods and systems for diagnosing a coolant leak of an engine. A method may include diagnosing a coolant leak of an engine based on identified fill signatures of a measured engine coolant pressure. A vehicle system is also disclosed, including an engine, a coolant system operatively connected to the engine, a coolant pressure sensor configured to measure engine coolant pressure during operation of the engine, and a controller, including instructions configured to create a coolant pressure profile corresponding to a given engine speed, and diagnose a condition of the engine based on the coolant pressure profile.03-21-2013
20120103070Leakage Detector For Compressors - A compressor leakage detector includes a water tank, an elevator platform, a control panel, and a pressure testing unit. The elevator platform is disposed in the water tank to rise and drop vertically. The operating panel of the control panel has a human-machine interface, indicators, and pressure gauges. The pressure testing unit in the control panel uses an intake pipe to connect to several branch pipes that in turn connect to the compressors in the water tank. Each of the branch pipes connects in series to at least one intake EM valve and at least one exhaust EM valve. A pressure sensor is interposed between the intake EM valve and the corresponding compressor.05-03-2012
20100095744LEAK DETECTOR - A leak detector for use with a piping system, where the leak detector includes a housing configured to be attached to a conduit and a valve configured and arranged for axial movement with respect to the housing. Additionally, there is a magnet attached to the valve for movement therewith. Embodiments of the invention also preferably include a magnetically-actuated switch positioned within the leak detector along an axial flow path of a fluid such that axial movement of the magnet triggers the switch, which indicates fluid flow through the leak detector. In certain embodiments, there is also a leak passageway that permits a relatively small amount of fluid to pass to an outlet side of the valve even when a diaphragm is in seating contact with the valve if fluid pressure on the outlet side of the valve is slightly lower than fluid pressure on an inlet side of the valve.04-22-2010
20090235723SENSOR LINE FOR MONITORING FOR AND LOCATING LEAKS AND METHOD FOR ITS PRODUCTION - A sensor line for monitoring for and locating leaks in an installation, in which chlorine escapes to the area surrounding the installation if there is a leak. The sensor line contains a carrier pipe. The wall of the carrier pipe has openings which are closed by at least one layer which is permeable for chlorine and contains a halogen-containing siloxane rubber.09-24-2009
20090013765GAS LEAK DETECTION APPARATUS AND METHOD - According to the present invention, mistaken detection of a gas leak can be prevented even when using an appliance which has been newly installed in a dwelling receiving a gas supply, and whereby a gas leak can be detected rapidly, efficiently and accurately. The characteristics extraction means 01-15-2009
20100089128APPARATUS FOR LEAKAGE TESTING AND/OR PRESSURE TESTING OF A PORTION OF A PIPE AND ALSO A METHOD FOR USE OF SAME - The present invention relates to an apparatus (04-15-2010
20100089127Passive Leak Detection Devices and Systems for Detecting Gas Leaks - A passive leak detection device may include a pressure switch, a check valve and a balance valve. The pressure switch may include an electric input lead, an electric output lead, a balance chamber and an inlet chamber. A pressure differential between the balance chamber and the inlet chamber may be operable to couple the electric input lead to the electric output lead. The inlet chamber may be fluidly coupled to a fluid port. The balance chamber may be fluidly coupled to the fluid port with a check valve disposed there between. The balance chamber may be fluidly coupled to a balance valve. When the balance valve is closed and fluid is flowing out of the fluid port, the pressure differential from the inlet chamber to the balance chamber is operable to couple the electric output lead to the electric input lead thereby indicating of a leak.04-15-2010
20090090171Method for Verifying the Tightness of a Tank Bleeding System without Using a Pressure Sensor - In a method for verifying the tightness of a tank bleeding system with a tank bleeding valve, a stop valve for air-tightly closing the tank bleeding system relative to an atmosphere prevailing outside the motor vehicle, and a bistable pressure switch whose switched condition indicates whether a predefined switching pressure is exceeded or not reached in the tank bleeding system, in order to be able to determine the tightness of the tank bleeding system without using a pressure sensor, the following steps are carried out: waiting until the vehicle speed drops below a certain threshold; opening the tank bleeding valve; closing the tank bleeding valve when a negative pressure has been attained which lies below the switching pressure; measuring the duration from the time an initial pressure lies below the switching pressure until the moment the switching pressure is exceeded again; and assessing the tightness is assessed based on the measured duration.04-09-2009
20080209985METER REGISTER - A meter register includes a register body having a rotatable drive shaft coupled thereto. A drive gear is attached to the drive shaft and at least one follower gear is rotatably attached to the register body and coupled with the drive gear. An antenna is provided that includes a first electrically conductive sheet, a second electrically conductive sheet, and an axially extending leg electrically connected to the first electrically conductive sheet and the second electrically conductive sheet. A first electrically conductive sheet is spaced an axial distance away from the second electrically conductive sheet wherein at least a portion of the register body is sandwiched between the first electrically conductive sheet and the second electrically conductive sheet. The meter register can be attached to a meter body and, further, an auxiliary antenna can be attached to the meter register. Also disclosed is a method of operation of a utility measuring system that incorporates the above-described meter register.09-04-2008
20090277248METHOD TO DETERMINE GAS LEAKAGE FROM UNDERGROUND PIPELINES - Method to determine the point of the gas leak from the buried pipeline located in the ditch under the soil, providing positioning at least one fiber-distributed temperature transmitter in the soil over the pipeline; the fiber-distributed temperature transmitter's readings allow to determine the leak point presence and location; the method is characterized by the fact that the fiber-distributed temperature transmitter is located above the pipeline surface; in the ground, between the pipeline and the transmitter or over the transmitter a shield is mounted which deflects the gas flow (in case of leakage) in the upper central part of the ditch adjacent to the transmitter and preventing the gas flow to the ditch peripheral areas located far away from the transmitter; the temperature is measured continuously and by the temperature drop the gas leak and its location is determined.11-12-2009
20080302172SYSTEM AND METHOD FOR UTILITY METERING AND LEAK DETECTION - The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is indicated if usage does not drop to zero, at least for a period of time, during a given time interval (e.g., during a 24-hour period). The severity of the leak is indicated by the minimum amount of usage during the given time period. In one embodiment, the leak detection system is provided in connection with an Automatic Meter Reading (AMR) system.12-11-2008
20100126250METHOD AND APPARATUS FOR DETECTING A LEAK IN A DOUBLE PIPE - In a method for detecting a leak in a double pipe, a medium located in an intermediate chamber between the interior and exterior pipe is moved toward a first end of the pipe, whereupon the medium flows in from the second end. On the first end the medium is examined for any leakage of a characteristic material, upon the detection of which a leakage signal is generated and a location of the leakage is calculated based on the transport time of the characteristic material from the leakage to the first end and on the mass flow of the medium. A corresponding device contains a conveyor unit for moving the medium through the intermediate chamber. A material sensor is disposed at the first end for examining the medium for the characteristic material. A control and analysis unit is provided for generating a leakage signal and calculating the location of the leakage.05-27-2010
20090255326ANODE LEAK TEST IMPLEMENTATION - A system and method is provided for detecting an anode leak of an anode stream in a fuel cell stack. The system comprises a controller that stores at least one first predetermined control value that corresponds to a first pre-selected pressure level. The controller generates at least one first operational control value. The controller controls a pressure regulator device to adjust the pressure of the anode stream to reach the first pre-selected pressure level with the at least one first operational control value. The controller compares the at least one first operational control value to the at least one first predetermined control value. The controller determines the presence of an anode leak in the anode stream based on the comparison of the at least one first operational control value to the at least one first predetermined control value.10-15-2009
20100162797METHODS AND SYSTEMS FOR VALVE LEAK SIMULATION - A method for simulating a compressor valve leak is described. The method includes inducing a flow of gas past a compressor valve that is coupled to a bypass block, wherein the bypass block defines a first passageway and a second passageway therein, and wherein the bypass block is also coupled to a bypass valve that is in flow communication with the second passageway. The method also includes measuring a first temperature and a second temperature. The first temperature is the temperature of the gas flowing through the first passageway of the bypass block and the second temperature is the temperature of gas flowing within the second passageway. The method also includes adjusting the bypass valve to divert a portion of the gas flowing through the second passageway to create temperature conditions substantially similar to conditions that are created due to a compressor valve leak.07-01-2010
20100206052CONTROL METHOD AND DEVICE OF FILLED WATER VOLUME IN FLUID SPACE - There are provided a control method and a device of a filled water volume in a fluid space through which the fluid space can be filled with water while preventing a pipe in the fluid space from making contact with the filling water by controlling the filled water by controlling the filled water volume.08-19-2010
20090038377OIL MIGRATION SYSTEM - An apparatus and a system is provided that may be utilized to determine oil migration and oil displacement from a pre-oiled air filter. The present invention may also be utilized to determine if oil is displaced from the air filter onto a portion of the apparatus for visualization to a user. The present invention utilizes a demonstration apparatus having a system for forcing air through the oil subjected air filter thereby attempting to force displacement of the oil from the air filter. The apparatus utilizes a blowing means whereby the oil infused air filter is subject to higher than normal air flow and whereby the apparatus has a deflection portion whereby if oil is displaced from the air filter, it is deflected onto the deflection portion where it would be physically viewable to an observer present in the vicinity of the apparatus.02-12-2009
20080229807Method and System for Detecting a Leakage in a Pipeline or Similar Conduit - The invention concerns a method and a system for detecting a leakage in a pipeline (09-25-2008
20100288018FUEL SYSTEM FOR A COMBUSTION ENGINE HAVING LOCAL LEAKAGE DETECTION - The application relates to a connector (11-18-2010
20110005303FLUID CONVEYING TUBE AND FLUID LEAKAGE DETECTING SYSTEM - Provided are a fluid conveying tube and a fluid leakage detecting system which can convey a cryogenic fluid such as LNG and which can quickly and reliably detect leakage of the fluid within the tube and the position of the leakage. An optical fiber 01-13-2011
20090064764Anomaly judgment device - There is provided an anomaly judgment device that is capable of detecting an abnormal state of a system highly accurately and obtaining an accurate result. The anomaly judgment device comprises a plurality of anomaly judgment means for judging an anomaly of the system and, in cases where it is judged by the plurality of anomaly judgment means that there is an anomaly, judgment means judges that a system anomaly exists. Hence, even in the event of a localized abnormal state judgment by one anomaly judgment means or failure, a final judgment is not made based on that anomaly alone, and at least one other anomaly judgment is made, whereby erroneous judgments can be eliminated and a highly accurate anomaly judgment is possible.03-12-2009
20110083492Leakage Detection Device - A leakage detection device includes a housing having a front hole at the front side for guiding in air and an exhaust hole at the rear side for exhaust of air, a sensor mounted in the housing in air communication with the front hole for detecting the presence of a coolant in the intake flow of air, and a fan assembly mounted in the housing for drawing outside air to flow through the front hole, the sensor and the exhaust hole, and a cable connectable to a digital coolant pressure gauge for transmitting power supply from the digital coolant pressure gauge to the fan assembly and the sensor and for transmitting an output signal from the sensor to the digital coolant pressure gauge for indication.04-14-2011
20100037681PIPE PRESSURE TESTING METHOD AND APPARATUS - A pipeline pressure testing assembly has a fitting defining a flow path and having a port on a wall of the fitting into which a pressure testing device is removably inserted along a central axis of the port for pressure testing. The port is circular, larger than the interior diameter of the pipeline and located at or above the tube forming the flow path through the fitting. The fitting has a recess encircling at least part of the flow path and opening to the port to receive the testing and sealing devices. The recess is formed by two opposing walls inclined relative to the central axis of the recess. The recess walls at the top of the flow path by the port are spaced apart a distance as large as the pipe diameter for cleanout and inspection. A tubular valve stem screws into the testing device and has a rotary valve blocking flow through the tubular valve stem. Flow through the fitting is blocked with the rotary valve closed and the tubular valve stem in a first position. Flow through the testing device is allowed with the rotary valve closed and the tubular valve stem in an open position. With the rotary valve open, flow through the tubular valve stem is permitted when the tubular valve stem is in either the first or second position to provide multiple drain and fill options.02-18-2010
20100064776METHOD AND DEVICE FOR DETECTING AND/OR QUANTIFYING WATER LEAKS - The invention relates to a method for detecting and/or quantifying water leaks in a water pipe, and to a device for realizing said method. The method of the invention comprises measuring the water flow rate in the pipe in at least two different locations, i.e., one downstream and one upstream relative to the suspected leak, the water flow rate being measured by injecting a tracing agent that modifies the water conductivity instantaneously at an upstream location and a downstream location relative to the suspected leak location, continuously measuring the water conductivity downstream from said locations and, from the conductivity values, calculating the water flow rates upstream and downstream relative to the suspected leak location in the pipe. The method of the invention can be used for quantifying a leak flow rate that can even be a very small one.03-18-2010
20110072888METHOD FOR LEAK DETECTION IN DOSING SYSTEM - A method for detecting a leak in a dosing manifold system having a manifold body, first valve assembly, and a device capable of preventing fluid flow. The method including the steps of transporting a fluid into a control fluid circuit, trapping the fluid in the circuit with the first valve assembly and the device capable of preventing fluid flow, blocking the fluid outside the control fluid circuit, relieving pressure outside of the circuit via the first valve assembly, measuring pressure inside the circuit, and comparing the pressures with selected baseline values.03-31-2011
20110100096Method and System for Fluid Valve Leak Detection - A method detection of leakage through at least one first valve includes admitting an amount of fluid into a first control volume in operable communication with the at least one first valve, thereby pressurizing the first control volume. The first control volume is isolated and a rate of change of pressure in a second control volume in operable communication with the at least one first valve is measured. A system for detecting leakage across at least one first valve includes a first control volume receptive of an amount of fluid and a second control volume in flow communication with the first control volume. At least one first valve is located between the first control volume and the second control volume, and a rate of change in pressure in the second control volume indicates a rate of leakage through the at least one first valve.05-05-2011
20110247398AIR VENT COVER FOR USE IN TESTING AIR LEAKAGE OF AN AIR DUCT SYSTEM - The present invention discloses an air vent cover for use in testing air leakage of an air duct system. The air vent cover includes a cover portion shaped to define a hollow cavity for enclosing an air vent. The air vent has a grill adjacent to a surface surrounding the air vent, and the grill has one or more louvers. The air vent cover includes a flexible connector extendable from the cover portion through the hollow cavity to the air vent. The flexible connector is removeably attachable to at least one of the louvers on the grill of the air vent. The flexible connector adjusts to secure an edge of the cover portion against a region of the surface surrounding the air vent, thereby creating a seal for inhibiting air flow through the air vent.10-13-2011
20120118047IEC 61158-2 ELECTRICAL CIRCUIT WITH WATER DETECTION MEANS COMPRISING A PHYSICAL LAYER ATTRIBUTE MODIFIER - An electrical circuit confirming to the IEC 61158-2 standard comprising a power supply, a device as a load thereof, and monitoring means adapted to monitor one or more physical layer attributes of the electrical circuit, in which the device comprises an enclosure, device function electronics disposed therein and two terminals connecting said device function electronics to said electrical circuit, in which water detection means is disposed inside said enclosure, and comprises water detection probes and a physical layer attribute modifier mounted across said electrical circuit in parallel with said device function electronics, and in which when said water detection probes detect water said physical layer attribute modifier makes a modification to a physical layer attribute of the electrical circuit, which modification is detectable by said monitoring means.05-17-2012
20100288019METHOD AND APPARATUS FOR DETECTING A LEAK IN A FUEL DELIVERY SYSTEM - A leak detection system is provided for detecting a leak in a fuel line. A controller determines the presence of a leak in the fuel line based on an analysis of data obtained from individual leak tests performed on the fuel line, the individual leak tests may span one or more fuel delivery events.11-18-2010
20090126465LEAK DETECTION SYSTEM FOR A DISHWASHER AND ASSOCIATED METHOD - A leak detection system for a dishwasher is provided, such a leak detection system comprises a catch pan having a bottom portion and adapted to collect a leaking fluid therein. The leak detection system further comprises a leak detection device mounted above the bottom portion of the catch pan. The leak detection device includes a body portion with adjacent and spaced apart first and second contacts extending therefrom toward the bottom portion of the catch pan. One of the first and second contacts extends further toward the bottom portion than the other of the first and second contacts, so as to space the other of the first and second contacts from the bottom portion of the catch pan. An associated method is also provided.05-21-2009
20120144898FLOW SENTINEL - A flow sentinel for improved remote monitoring and control of the flow in a water line serving a residential or commercial structure comprises: (1) a watertight case having a first side and a second side oppositely placed; (2) a water inlet positioned in the first side of the watertight case; (3) a water outlet positioned in the second side of the watertight case; (4) a water flow meter in operable contact with the water inlet and the water outlet; (5) at least one means for display and/or remote transmission of the flow rate of the water; (6) an alarm; (7) means for shutting off the flow in a water line; and (8) means for powering the water flow meter.06-14-2012
20100281954TEST APPARATUS AND METHOD FOR SAFETY VALVE - An apparatus and method for testing the performance of a safety valve. The apparatus includes an accumulator including at least one electric heater for heating a predetermined amount of water in the accumulator, and storing steam produced by the electric heater, a test vessel storing the steam supplied from the accumulator, and providing steam at a test pressure to a safety valve, the steam being supplied after controlling flow rate and pressure, a condensing tank storing demineralized water to be supplied to the accumulator, and condensing and collecting the steam discharged from the safety valve, and a water-supply pump supplying the water stored in the condensing tank to the accumulator.11-11-2010
20100281953LINE LEAK DETECTOR AND METHOD OF USING SAME - An apparatus for detecting a leak in a conduit line includes a housing in fluid communication with the line, a valve including a valve seat and a valve element movable relative to the seat between opened and closed positions, a bypass line around the valve, a flow detector coupled to the bypass line for detecting fluid flow therethrough, and a first mechanism configured to urge the valve element toward the closed position. The apparatus may further include a second mechanism separate from the first mechanism for maintaining the valve element in the closed position until a threshold pressure drop is reached. The first mechanism may operate on the principle of buoyancy and the second mechanism may operate on the principle of magnetism.11-11-2010
20100175461METHOD AND SYSTEM FOR MONITORING GAS LEAKS BY AMPLIFICATION OF FLOW - A method to amplify the pressure effects of very small flows, or very small leaks, in contained fluid systems, and the effects of small leaks in fluid systems that have small flows such as would occur in a combustible gas system with lighted pilot lights or a contained water system with a drip watering system, while not affecting the normal operation of such fluid systems, and without interfering with the function of such small flows.07-15-2010
20110132074Apparatus and Method for Testing Lengths of Pipe - An apparatus for pressure testing a pipe includes a frame supporting a mandrel, the mandrel being adapted for positioning within the pipe, and two sealing devices connected to the mandrel and adapted to seal opposite ends of the pipe to create an annular space between the mandrel, the pipe, and the sealing devices. The integrity of the pipe is tested by pressurizing the annular space and monitoring such pressure.06-09-2011
20090308140PIPELINE LEAK DETECTION SYSTEM - A pipeline leak detection system, includes, in combination, a pipeline; pressure sensors positioned at regular spaced intervals along the pipeline to monitor pressure within the pipeline; and a monitoring station receiving data from the pressure sensors. The monitoring station establishes a normal pressure profile of relative pressures recorded by the pressure sensors along the pipeline in the absence of a leak and issues an alarm should one of the pressure sensors provide data which is uncharacteristic of the normal pressure profile, indicating a leak in the vicinity of the one pressure sensor.12-17-2009
20090301173Device for detecting water leaks - A device for detecting water leaks, which comprises an inlet and an outlet and can be installed along a main duct; the main duct can be crossed by a flow of liquid. The detection device comprises at least one bypass flowmeter, in order to measure the flow rate along at least one bypass duct arranged in parallel to the main duct. Along the main duct there are flow control elements, for diverting the flow toward the bypass duct; the flow control elements can be deactivated automatically when a predefined value of difference in pressure between the inlet and the outlet is exceeded.12-10-2009
20100175460DEVICE, SYSTEM, AND METHOD FOR DETECTING AND LOCATING MALFUNCTIONS IN A HYDRAULIC STRUCTURE, AND A HYDRAULIC STRUCTURE WITH SAID DEVICE - The invention relates to a device (07-15-2010
20120118046EVAPORATION LEAK CHECK SYSTEM - A pump characteristics expression of a pump is developed based on a closed-state pressure detected when the pump is driven while a space between a pump passage and a first passage is closed, an open-time pressure detected immediately after the space is opened while the pump is operated, and a flow rate characteristics expression of the pump passage. A reference pressure is determined by an intersection point between the pump characteristics expression of the pump and a flow rate characteristics expression of an orifice having a predetermined passage area. A leak check portion determines whether a leak of fuel evaporation generated from a fuel tank is within an allowable range by comparing the reference pressure and a pressure detected when the pump is operated for a predetermined period while the space is opened.05-17-2012
20120204624DUAL SUBMARINE LEAK DETECTION SYSTEM - The dual submarine leak detection system provides for controllable in-pipe leak detection. The dual submarine leak detection system includes first and second submarines joined to one another by a tether. Each of the submarines includes a housing and at least one leak detector mounted thereon. A communication transceiver is mounted in the housing for remotely communicating the leak condition and a location of the leak condition, as well as receiving control and communication signals. Each submarine further includes at least one selectively retractable leg mounted on the housing and selectively extending therefrom, and a motor mounted within the housing for driving a propeller to propel the submarine through a fluid-filled pipe. A control system further allows for controllable or programmable steering of the submarine through the fluid-filled pipe and any pipe joints associated therewith.08-16-2012
20120167670SYSTEM AND METHOD FOR AIR CONTAINMENT ZONE AIR LEAKAGE DETECTION - A system for measuring hot or cold aisle containment air leakage in a data center includes a plurality of equipment enclosures arranged in a first row and a second row, a plurality of panels cooperatively arranged with the plurality of equipment enclosures to form an air containment region, and a conduit mounted within the air containment region and sealed at each end, the conduit having an orifice and a plurality of openings distributed at substantially uniform intervals along a length of the conduit.07-05-2012
20120167669LEAK DETECTION SYSTEM - A hose leakage detection system includes a ring configured to be disposed within a hose. The ring has a lateral slot formed in an outer surface, defining a first slot wall and a second slot wall. A sensor is disposed on one of the first slot wall and the second slot wall and a power source is electrically connected to the leakage detection system.07-05-2012
20120255344PIPE PRESSURE TESTING METHOD AND APPARATUS - A sealing device is provided for use with a fitting. The fitting has circular port and a flow path with a longitudinal axis. A circular port encircles a portion of the flow path opposite the port with the sealing device inserted into the port. The sealing device has a circular top with two opposing surfaces depending therefrom but inclined so the surfaces are closer at the top. A continuous sidewall joins the periphery of the two surfaces. The opposing surfaces are inclined and spaced apart further at the top than at an end opposite the top. A cylindrical hole through the opposing surfaces encircles the flow path during use.10-11-2012
20120255343LEAK DETECTION SYSTEM - The system includes structure for supporting at least one tube within a pipe. The tube has one end disposed close to, or in contact with, a wall of the pipe. A sensor is disposed within the at least one tube to detect a pressure gradient or fluid movement within the tube. Such pressure gradient or fluid movement indicates a leak in the pipe adjacent to the tube location. In a preferred embodiment, the structure is a ring sized to fit within the pipe and the ring supports a plurality of tubes. In another aspect, the tube includes a restriction to prevent flow and pressure is measured on each side of the restriction.10-11-2012
20120255342DEVICE FOR CONTROLLING LEAKS AND METHOD FOR OPERATING THE SAME - A leak detection system includes a water delivery device having a flow chamber, closing valve member and at least one contact seat for receiving a portion of the closing valve member. A first contact is located on the closing valve member and a second contact is located on the contact seat, where the first and second contacts are coupled to a leak detection circuitry. A water flow detection element is located within the flow chamber, where the leak detection circuitry is configured to be in an inactive mode when the first and second contacts are apart and where the leak detection circuit is set to active when the first and second contacts are in contact with one another, when the closing valve member and contact seat are in a closed arrangement.10-11-2012
20120186333EVAPORATION SYSTEM LEAK DIAGNOSTIC APPARATUS - An evaporation system leak diagnostic apparatus that purges fuel vapor from a fuel tank into an intake system of an internal combustion engine via a canister, includes: a first closed system leak diagnostic unit that executes a leak diagnostic on a first closed system based on a tank internal pressure detected by a tank internal pressure detecting device while the first closed system is formed with a first closed system forming device; and a second closed system leak diagnostic unit that introduces pressure in the first closed system into a second closed system by forming a second closed system with a second closed system forming device, and executes a leak diagnostic on the second closed system based on the tank internal pressure detected by the tank internal pressure detecting device, after the leak diagnostic by the first closed system leak diagnostic unit.07-26-2012
20120324985FLUID LEAK DETECTION SYSTEM - A fluid leak detection system is provided, and includes a fluid conduit, a fluid-cooled device having an inlet and an outlet, an inlet flow meter, an outlet flow meter, and a controller. The inlet flow meter is fluidly connected to the fluid conduit. The inlet flow meter monitors the inlet of the fluid-cooled device for an inlet temperature and an inlet flow rate. The inlet flow meter has an inlet flow meter drift versus process fluid temperature curve. The outlet flow meter is fluidly connected to the fluid conduit. The outlet flow meter monitors the outlet of the fluid-cooled device for an outlet temperature and an outlet flow rate. The outlet flow meter has an outlet flow meter drift versus process fluid temperature curve. The controller is in communication with the inlet flow meter and the outlet flow meter.12-27-2012
20130008233WATER LEAKAGE CHECKING APPARATUS - A water leakage checking apparatus includes: a plurality of attachment portions for attaching an endoscope; a water leakage sensing portion that communicates with the plurality of attachment portions and simultaneously carries out a plurality of items of a water leakage check menu; and an endoscope information reading portion that reads endoscope information from the endoscope. Also, the water leakage checking apparatus includes: a control portion that determines an item of the water leakage check menu based on the read endoscope information, assigns the determined item of the water leakage check menu to one of the plurality of attachment portions, and outputs attachment portion identifying information for identifying the assigned one of the attachment portions; and a notifying portion that notifies the attachment portion identifying information outputted from the control portion.01-10-2013
20120240663METHOD FOR LEAK-TESTING HAND-HELD PISTON STROKE PIPETTES AND ASSOCIATED LEAK-TESTING APPARATUS - A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus (09-27-2012
20130174649FLUID LEAK DETECTION SYSTEM - A fluid leak detection system is provided, and includes a fluid conduit, a fluid-cooled device having an inlet and an outlet, an inlet flow meter, an outlet flow meter, and a controller. The inlet flow meter and inlet flow meters are fluidly connected to the fluid conduit. The inlet flow meter monitors the inlet of the fluid-cooled device for an inlet temperature and an inlet flow rate. The inlet and outlet flow meters each have flow meter drift versus process fluid temperature curves as well as drift versus ambient temperature curves, wherein the curves for the inlet flow meter differ from the outlet flow meter. The outlet flow meter monitors the outlet of the fluid-cooled device for an outlet temperature and an outlet flow rate. The controller is in communication with the inlet flow meter and the outlet flow meter.07-11-2013
20130174650METHOD FOR DETECTING LEAKS, SYSTEM AND MEDICAL TREATING DEVICE - The present invention relates to a method for detecting leakages in a system for conducting a medical fluid upstream a shut-off device of the system as well as systems related thereto. More specifically, the method is used with systems having a section conducting the medical fluid, the section being arranged upstream the shut-off device, which is configured to interrupt or reduce an escaping or outflow of the fluid out of the section into an area downstream the shut-off device. The system for use with the present method further has at least one conveying device for conveying the fluid through the section. The present invention further relates to a digital storage medium, a computer program product and a computer program for performing the method for detecting leakages.07-11-2013
20080216560Leak detecting apparatus - Apparatus and method for use in testing the fluid tightness of closed vessels or fluid systems, such as found in the pressurized cooling system of an internal combustion engine and the fluid transmission of an automobile. The apparatus is configured to detect and/or quantify fluid leakage from a fluid system that is under pressure, when in use, such as through imperfections in the housing or sealing structure of the fluid system whereby to warn the provider of such fluid system that a leakage condition exists.09-11-2008
20130145825METHOD FOR LEAK-TESTING AND DEVICE FOR CARRYING OUT THE METHOD - A method for leak-testing a fuel supply system has been provided, wherein the fuel supply system comprises a fuel tank, a fuel injection valve, fuel lines between the fuel tank and the fuel valve, and a control valve controlled by a diaphragm, and wherein the diaphragm bounds a control chamber on one side, the method comprising: acting upon the portion of the fuel supply system upstream of the control valve with a predetermined pressure level, acting upon the side of the diaphragm facing away from the control chamber with a counterforce, wherein the counterforce is equal or greater to the predetermined pressure level. A device for leak-testing a fuel system according to the above method, wherein the device comprises a test pressure unit with at least one test pressure line, wherein said test pressure line is connectable to the fuel supply system.06-13-2013
20120272722IN-PIPE LEAK DETECTION BASED ON PRESSURE GRADIENT - Leak detection system. The system includes a structure sized to fit within a pipe for supporting at least one sensing element near an inside wall of the pipe, whereby a pressure gradient at a leak in the pipe will cause the sensing element to respond. Structure is provided for detecting movement or deformation of the sensing element, the movement or deformation indicating the presence of a leak. In a preferred embodiment, the structure includes two spaced-apart rings for supporting the at least one sensing element. The sensing element is a diaphragm in a preferred embodiment. In this embodiment, the sensing element is supported for movement with respect to the ring structure which includes sensing circuitry for detecting the movement to indicate a leak. Other embodiments employ different sensing elements that respond to pressure gradients near leaks.11-01-2012
20130152672HIGH PRESSURE AND TEMPERATURE VALVE - The present disclosure is directed to systems and methods which provide a seal-less high temperature and pressure valve for use in many applications.06-20-2013
20130180317ON BOARD SEAT LEAKAGE DETECTION SYSTEM - Equipment and methodology are provided for performing seat leakage detection on a valve assembly including at least two valves to be tested, wherein, while both of the valve assembly valves remain closed, at least a first shut off valve of a plurality of shut off valves is closed to enable flow of fluid through manifold passages of a plurality of manifold passages to test the first valve of the valve assembly valves and, subsequently, at least another shut off valve of the plurality of shut off valves is closed to enable flow of fluid through manifold passage of the plurality of manifold passages to test the second valve of the valve assembly valves.07-18-2013
20110308300SEAL LEAKAGE AND SEAL OIL CONTAMINATION DETECTION IN GENERATOR - In an embodiment, a system includes: a casing for surrounding at least a portion of a rotor, and enclosing a volume of a cooling gas thereabout, the casing including a plurality of static seals; an end housing at each end of the casing, each end housing including a seal system through which the rotor extends, wherein a portion of cooling gas escapes from the casing to at least one seal area; and a source of cooling gas fluidly coupled to the casing by a cooling gas regulator. The system may further include: a scavenging system coupled to each end housing for removing a gas mixture therefrom including a portion of escaping cooling gas; a sensor for determining a purity of the cooling gas in the casing; and a static seal leak detector that generates an alarm indicative of a leak in at least one of the plurality of static seals.12-22-2011
20130199273MONITORING FLUID FLOW IN A CONDUIT - According to the present invention, there is provided a method of monitoring a fluid in a fluid carrying conduit comprising the steps of: monitoring a fluid characteristic at a first point and second point along the conduit substantially continuously, determining first and second quantities, being related to a differential with respect to time of the value of the fluid characteristic at the first and second points respectively, combining the first and second quantities to produce a two dimensional intensity function of time and a position variable and analysing the magnitude of the intensity function to derive information relating to the fluid. The intensity function may represent a substantially continuous probability function, wherein its absolute value is related to the probability of a leak or theft having occurred in the conduit. Furthermore, a method of determining the presence and location of leaks in, or thefts from, the conduit by determining whether or not the magnitude of the intensity function satisfies pre-determined criteria is disclosed. A method of determining the speed of pressure waves propagating through a fluid flowing in a fluid carrying conduit by analysing the two dimensional intensity function is also disclosed. An apparatus suitable for performing all of the above mentioned methods is also claimed.08-08-2013
20120067109METHOD AND APPARATUS FOR CONTINUOUSLY MONITORING INTERSTITIAL REGIONS IN GASOLINE STORAGE FACILITIES AND PIPELINES - An underground storage system includes a primary containment unit and a secondary containment unit. The underground storage system further includes a leak detection system which is fluidly connected to the secondary containment system, and which is adapted to detect fluid leaks in the primary containment system and the secondary containment system.03-22-2012
20130098143FUEL VAPOR LEAK DETECTING DEVICE AND FUEL VAPOR LEAK DETECTING METHOD USING THE SAME - A fuel vapor leak detecting device includes a pump, a housing having a pump passage connected to the pump, a switching valve, a pressure detector, and a control device detecting a shutoff pressure that corresponds to an interior pressure of the pump passage detected by the pressure detector when the pump is actuated while the switching valve is closed. The control device controls the switching valve to be opened at least once and to be closed at least once when the shutoff pressure is out of a specified range. The control device detects a fuel vapor leak when the shutoff pressure is in the specified range.04-25-2013

Patent applications in class Fluid handling conduit in situ

Patent applications in all subclasses Fluid handling conduit in situ