Hyundai Heavy Industries Co., Ltd Patent applications |
Patent application number | Title | Published |
20160060846 | Method of Controlling Work of Excavator - Disclosed is a method of controlling work of an excavator. When a supply flow rate of hydraulic oil which is supplied to a working apparatus by a first pump among first and second pumps driven by the rotational force of the engine is higher than a requirement flow rate required by the working apparatus, the RPM of an engine is reduced, and hydraulic oil pumped by the first and second pumps are supplied to the working apparatus. Accordingly, an energy-saving effect such as a gas mileage of an excavator being reduced is obtained. | 03-03-2016 |
20160053728 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL - A system for supplying fuel includes a fuel supplying line connected from a fuel storage tank to an engine and including a pressure measuring sensor, a pump provided on the fuel supplying line and configured to pressurize fuel outputted from the fuel storage tank, a heat exchanger provided on the fuel supplying line between the pump and the engine and configured to heat the fuel outputted from the pump, a first return line provided at a front end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line, and a second return line provided at a rear end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line. | 02-25-2016 |
20160040619 | ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE - An electronically controlled fuel injection valve can control the time to inject fuel and the amount of fuel to be injected in response to a control signal independently from the operating condition of an engine unlike a traditional mechanical fuel injection valve. The electronically controlled fuel injection valve employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection, has a simple structure making it easy to assemble, replace and precisely machine parts, and has a simple flow path structure which facilitates fabrication. | 02-11-2016 |
20150377485 | COMBUSTION INSTABILITY CONTROL DEVICE AND CONTROL METHOD FOR SAME - A gas turbine combustion instability control device has a combustion unit provided with a hollow combustion chamber, a gas turbine connected to the inside of the combustion chamber and a dynamic pressure sensor which is provided to the inside of the combustion chamber and measures the combustion dynamics of the inside of the combustion chamber; a diagnosis module which processes combustion dynamic pressure signals (p) according to the combustion dynamics measured by the dynamic pressure sensor to calculate the kurtosis value (k) of the dynamic pressure signals, and compares the same with a kurtosis reference value (k | 12-31-2015 |
20150374406 | Medical Intervention Apparatus - Disclosed is a medical intervention apparatus. The medical intervention apparatus includes a needle rotation unit configured to include a first needle rotation member, a second needle rotation member that is disposed to be separated from the first needle rotation member, and a first driver that drives the first and second needle rotation members to rectilinearly move in opposite directions and a needle insertion unit configured to insert a needle, which is inserted between the first needle rotation member and the second needle rotation member, into a target. | 12-31-2015 |
20150368878 | CONSTRUCTION EQUIPMENT - Disclosed is a construction equipment including: a boom operating unit including a boom, a boom cylinder, and a boom head and rod return solenoids for controlling the extension of the boom by controlling the ascending and descending of the boom cylinder; an arm operating unit comprising an arm and an arm cylinder so as to move the arm by controlling the extension of the arm cylinder; and a control unit for generating a flow path connection signal in at least a part of the boom head and rod return solenoids upon operation of an arm lever in a boom float mode so as to control the boom cylinder. | 12-24-2015 |
20150343525 | METHOD FOR CENTRIFUGAL CASTING OF MOTOR ROTOR - Disclosed herein is a method for centrifugal casting of a motor rotor. The method includes: assembling molds and a core; heating the assembled mold and core to a preset temperature; and forming a motor core by injecting molten metal into a forming space inside the mold and the core while rotating the assembled mold. | 12-03-2015 |
20150308078 | AUTOMATIC CONTROL SYSTEM AND METHOD FOR JOYSTICK CONTROL-BASED CONSTRUCTION EQUIPMENT - According to the present invention, a hydraulic system of construction equipment is implemented as a close center system, which converts an input signal of an electric or hydraulic joystick into a speed signal of a work apparatus, and controls a speed of the work apparatus regardless of an external load condition, thereby minimizing fatigue of a worker to improve work efficiency, improving a work apparatus operation ability of an unskilled person, and patterning standardized work to implement automation of construction equipment. | 10-29-2015 |
20150233093 | METHOD FOR CONTROLLING DRIVING FLOW OF WHEEL EXCAVATOR - The present invention controls a proportional control valve controlling the maximum flow of the flow pump to perform controlling the maximum flow of the hydraulic oil pump after checking whether the pump joint control is normal, receiving a flow value of the flow pump controlled by the proportional control valve, checking an error when the flow value received during a control of the maximum flow has an error, and assigning a weight value to the checked error to compensate for the flow value. Therefore, the present invention may decrease a number of an engine revolution speed and lower a driving fuel consumption and reduce a driving noise. | 08-20-2015 |
20150202014 | Surgical Robot System and Surgical Robot Control Method - Disclosed are a surgical robot system and a surgical robot control method. The surgical robot system includes a surgical tool configured to perform surgery on each of a plurality of procedure regions in a surgical region which is divided into the plurality of procedure regions, a robot arm on which the surgical tool is mounted, and a driver configured to operate the robot arm. The present invention adjusts a speed at which a surgical robot moves, based on a risk level which is set for a procedure region, and thus enhances a stability of surgery performed by the surgical robot and moreover decreases a degree to which the surgery is delayed, thereby reducing pain and inconvenience caused to an operator and a patient. | 07-23-2015 |
20150183064 | GUIDE FRAME SUPPORT DEVICE - Provided is a guide frame support device for a pipe welding device, the guide frame support device, which supports a guide frame provided on an outer circumferential surface of a pipe to be welded, including: a hinge bar connected to an inner circumferential surface of the guide frame; a pair of support bars which rotates around the hinge bar at a predetermined angle; hinge links, one side of each of which is hinge-connected to both ends of the hinge bar and the other side of each of which is connected to both ends of the pair of support bars; and a torsion spring provided between the pair of support bars and for providing elastic force to enable the support bars to rotate around the hinge bar at a predetermined angle. | 07-02-2015 |
20150082782 | INDEPENDENT FLOW RATE CONTROLLING HYDRAULIC SYSTEM FOR PRESSURE CONTROL OF EXCAVATOR AND INDEPENDENT HYDRAULIC PRESSURE CONTROLLING METHOD USING THE SAME - An independent flow rate controlling hydraulic system for pressure control of an excavator, in which a hydraulic system of the excavator can be variably controlled via independent flow rate control. The hydraulic system includes a plurality of actuators which actuate a working apparatus, a pressure control-type hydraulic pump which feeds working fluid to the actuator, first and second electronic proportional control valves which are disposed at a piston-side inlet flow path and a load-side inlet flow path connected from the hydraulic pump to the actuators, third and fourth electronic proportional control valves which are disposed at a piston-side outlet flow path and a load-side outlet flow path connected from the actuators to a hydraulic tank, and a control unit which variably controls areas of the flow paths by controlling the first, second, third and fourth electronic proportional control valves depending on an amount by which a control stick is manipulated. | 03-26-2015 |
20150068699 | CENTRIFUGAL CASTING MACHINE FOR MANUFACTURING ROTOR - Disclosed herein is a centrifugal casting machine, including: a rotating plate rotating by means of a motor; a cylindrical sleeve installed on the rotating plate and having an internal diameter corresponding to an external diameter of silicon steel plates constituting a core in the sleeve; an upper mold internally installed on the sleeve to define a first molding space into which a molten metal is introduced to mold an end ring; a lower mold internally installed on the sleeve to define a second molding space into which a molten metal is introduced to mold an end ring; a dummy shaft fitted in the center of the core and coupled to the lower mold; a cap coupled to an upper end of the dummy shaft to press the core; and a hydraulic ram coupled to the lower mold to move the lower mold up and down and coupled to the rotating plate to rotate therewith. | 03-12-2015 |
20150034327 | DRILLING SYSTEM HAVING SLOT FOR UNDERWATER STORAGE OF BOP ASSEMBLY - A drilling system includes a derrick installed on a platform of a stationary floating structure. An activity forms a borehole in a sea-bed, and carries out installation of a casing pipe assembly and a BOP assembly in the formed borehole. A BOP trolley forms the BOP assembly together with the activity, and moves while supporting the formed BOP assembly thereon. A slot is formed on a work stand of a moon pool for underwater storage of the BOP assembly so as to extend parallel with the direction of movement of the BOP trolley, and suppresses shaking of risers when the BOP assembly positioned underwater is moved by the BOP trolley and the BOP assembly is moved to an underwater storage position. | 02-05-2015 |
20140352331 | LIQUEFIED GAS TREATMENT SYSTEM - A liquefied gas treatment system according to an embodiment of the present invention includes a boil-off gas heat exchanger exchanging heat between boil-off gas, pressurized by a boil-off gas compressor and recovered along a boil-off gas supply line branching off upstream of a liquefied gas-consuming unit, and the boil-off gas, supplied from a liquefied gas storage tank, wherein the boil-off gas heat exchanger exchanges heat between the boil-off gas, pressurized by the boil-off gas compressor and recovered along the boil-off gas supply line, and flash gas, supplied through a vapor recovery line. | 12-04-2014 |
20140352330 | LIQUEFIED GAS TREATMENT SYSTEM - A liquefied gas treatment system according to an embodiment of the present invention includes a boil-off gas heat exchanger exchanging heat between boil-off gas, pressurized by a boil-off gas compressor and recovered along a boil-off gas supply line branching off upstream of a liquefied gas-consuming unit, and the boil-off gas supplied from a liquefied gas storage tank, wherein the boil-off gas heat exchanger cools the boil-off gas, recovered along the boil-off gas supply line, with the boil-off gas, supplied from the liquefied gas storage tank, or flash gas, supplied through a vapor recovery line. | 12-04-2014 |
20140333154 | MULTISTAGE FERROFLUID SEALING APPARATUS FOR SUPERCONDUCTING ROTATING MACHINES - Disclosed is a multistage magnetic fluid sealing apparatus for superconducting rotating machines. According to the present invention, the magnetic fluid sealing apparatus, which is provided with a first magnetic fluid chamber and a second magnetic fluid chamber that are arranged in a multi-stage manner so as to contain a magnetic fluid capable of sealing the inner portion of a superconducting rotating machines, is installed on one surface of the superconducting rotating machines. The free magnetic fluid sealing apparatus of the invention configured to have a dual structure enables two to three fluid lines to be installed in the superconducting rotating machines. | 11-13-2014 |
20140318503 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL - A system for supplying fuel includes a fuel supplying line connected from a fuel storage tank to an engine and including a pressure measuring sensor, a pump provided on the fuel supplying line and configured to pressurize fuel outputted from the fuel storage tank, a heat exchanger provided on the fuel supplying line between the pump and the engine and configured to heat the fuel outputted from the pump, a first return line provided at a front end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line, and a second return line provided at a rear end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line. | 10-30-2014 |
20140299038 | CARGO TANK FOR EXTREMELY LOW TEMPERATURE SUBSTANCE CARRIER - A cargo tank for an extremely low temperature substance carrier according to the present invention arranges a first cargo tank wall having a primary corrugated panel to prevent cracks caused by contraction and easily absorb impact caused by liquefied gas sloshing to prevent defects occurring in the cargo tank, forms auxiliary corrugation on each of the first, second and third cargo tank walls to prevent defects caused by contraction and more easily absorb impact caused by liquefied gas sloshing, and selectively applies the first to third cargo tank walls having different structures to respective parts of the cargo tank where different sloshing phenomena occur to improve reliability of the cargo tank. | 10-09-2014 |
20140290280 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL AND METHOD OF OPERATING THE SAME - A system for supplying LNG fuel includes a fuel supplying line connected from an LNG storage tank to an engine, a boosting pump provided on the fuel supplying line and configured to pressurize LNG outputted from the LNG storage tank and cool down in a standby mode, a high pressure pump configured to pressurize the LNG outputted from the boosting pump to high pressure, and a return line connected between the LNG storage tank and the high pressure pump, in which the LNG is returned through the return line. | 10-02-2014 |
20140290005 | DOOR HINGE FOR HEAVY EQUIPMENT - Provided is a door hinge for heavy equipment, including: first plate and a second plate disposed on a hinge shaft of a door of heavy equipment and hinge-coupled to each other to open and close the door; and a stay unit rotatably disposed on the first plate and supporting the second plate when the door is opened to prevent the door from being closed. Thus, according to the present invention, an open state of a door can be maintained by only the stay unit without mounting a bracket by overcoming the limitation that the bracket for mounting a separate door stay must be mounted to a door body in order to maintain the open state of the existing door during opening of the door. | 10-02-2014 |
20140250922 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL - A system for supplying LNG fuel is disclosed. The system includes a fuel supplying line connected from an LNG storage tank to a high pressure engine and a low pressure engine, respectively, a pump formed on the fuel supplying line, and configured to pressurize LNG outputted from the LNG storage tank to high pressure, a first heat exchanger formed on the fuel supplying line between the high pressure engine and the pump, and configured to heat the LNG supplied from the pump, a second heat exchanger formed on the fuel supplying line between the low pressure engine and the LNG storage tank, and configured to evaporate the LNG in a liquid state supplied from the LNG storage tank and a heat source supplying line configured to supply heat to the LNG by supplying glycol water to the first heat exchanger and the second heat exchanger. | 09-11-2014 |
20140250921 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL - The system heats glycol water using steam generated by a boiler and heating LNG using the glycol water, thereby increasing efficiently the LNG to temperature required for an engine. In addition, the system senses LNG flowing to a glycol tank using a pressure sensor, etc. when the LNG flows to the glycol tank due to pressure difference between a fuel supplying line and a glycol circulation line generated according as a heat exchanger is broken down, and outputs the flowed LNG to the outside. As a result, the glycol circulation line may be returned to original state and stability of the system may be enhanced. | 09-11-2014 |
20140238052 | INNER TANK SUPPORTING STRUCTURE FOR LNG STORAGE TANK FOR SHIP - The present invention relates to an inner tank supporting structure for an LNG storage tank for a ship, which does not restrict expansion or contraction of an inner tank in circumferential and lengthwise directions while the inner tank is expanded or contracted due to a temperature change caused by storage and discharge of LNG. The inner tank supporting structure for the LNG storage tank which has a cylindrical outer tank and a cylindrical inner tank, includes: a sliding main supporter mounted at one side of a bottom of the outer tank so as to fix the center of a bottom surface of the inner tank, the sliding main supporter having elongated sliding grooves formed in the lengthwise direction of the inner tank; a sliding main supporter mounted at the other side of the bottom of the outer tank so as to fix the center of the bottom surface of the inner tank, the sliding main supporter having round grooves; and a sub supporter mounted at the bottom of the outer tank so as to support the bottom surface of the inner tank, wherein the bottom surface of the inner tank is not fixed to the sub supporter. | 08-28-2014 |
20140238051 | SYSTEM AND METHOD FOR PROCESSING LIQUEFIED GAS - The present invention relate to liquefied gas treatment system and method. A liquefied gas treatment system includes: a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand, a heat exchanger provided on the liquefied gas supply line between the source of demand and the liquefied gas storing tank and configured to exchange heat between the liquefied gas supplied from the liquefied gas storing tank and heat transfer media, a media heater configured to heat the heat transfer media, a media circulation line connected from the media heater to the heat exchanger, a liquefied gas temperature sensor provided on the liquefied gas supply line, and configured to measure a temperature of the liquefied gas, and a controller configured to make the measured temperature of the liquefied gas be equal to or higher than a demanded temperature of the source of demand in such a manner that the controller decreases a flow rate of the heat transfer media flowing into the media heater. The liquefied gas treatment system and method of the present invention may decrease a circulation rate of the heat transfer media in such a manner that a difference between temperatures of the heat transfer media at front and rear ends of the heat exchanger is sufficiently maintained, thereby improving efficiency of circulation of the heat transfer media, and heating liquefied gas at an appropriate temperature to supply the heated liquefied gas to a source of demand. | 08-28-2014 |
20140230458 | SYSTEM FOR SUPPLYING LIQUEFIED NATURAL GAS FUEL - Disclosed is an LNG fuel supply system, including: a fuel supply line connected from an LNG storing tank to an engine; a pump provided on the fuel supply line, and configured to change an LNG to the LNG in a supercooled liquid state by compressing the LNG discharged from the LNG storing tank at a high pressure; and a heat exchanger provided on the fuel supply line between the engine and the pump, and configured to phase change the LNG in the supercooled liquid state to the LNG in a supercritical state by heating the LNG in the supercooled liquid state supplied from the pump. | 08-21-2014 |
20140217850 | ROTOR OF SUPERCONDUCTING ROTATING MACHINES - A rotor of superconducting rotating machines according to the present invention comprises: a yoke provided with receiving sections which are consecutively formed on the outer peripheral surface thereof; bobbins received in each of the receiving sections of the yoke; and a superconducting coil coupled with the bobbins, wherein interval-maintaining members are formed of high tenacity fibers and coupled between the yoke and the bobbins such that the bobbins are supported at an interval from the inner surfaces of the receiving sections to the bottom surfaces thereof. | 08-07-2014 |
20140211378 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear including a circuit breaker, a first through third switches, a voltage transformer, a cable head, a gas insulated busbar unit, and first and second current transformers is provided. The gas insulated busbar unit is connected with the second current transformer and the first and second switches are connected with a bottom of the gas insulated busbar unit. The third switch is connected with the first current transformer, the cable head is connected with the third switch, and the voltage transformer is connected with a top of the cable head. The first and second current transformers are respectively connected with first and second sides of the circuit breaker. | 07-31-2014 |
20140202371 | DRILLSHIP HAVING VORTEX SUPPRESION BLOCK WITH RECESSED FLOW STABILIZING SECTION IN MOON POOL - Disclosed is a drillship having a vortex suppression block with a recessed flow stabilizing part in a moon pool. The flow stabilizing section is formed so that a bottom of the vortex suppression block that protrudes from a bottom of a hull toward a stern in the moon pool is recessed in an upward direction of the hull to stabilize a flow in the moon pool and reduce a variation in resistance of the drillship. The flow stabilizing section ( | 07-24-2014 |
20140170032 | METAL FILTER FOR PURIFYING EXHAUST GAS FROM SHIP, AND PREPARATION METHOD THEREOF - The present invention relates to a metal filter for purifying the exhaust gas from a ship, and a preparation method thereof. The purpose of the present invention is to provide: a metal filter for purifying the exhaust gas from a ship, capable of reducing nitrogen oxide by 85% or more at 250-300° C.; and a preparation method thereof. The metal filter for removing nitrogen oxide contained in the exhaust gas from a ship of the present invention comprises an integrated catalyst, wherein a metal substrate comprising irregularities is coated with a low temperature active catalyst in which vanadium (V), tungsten (W) and alumina sol are supported in a Ti-pillared clay (Ti-PILC) powdered support. | 06-19-2014 |
20140165958 | PRECOMBUSTION CHAMBER FOR GAS ENGINE - Disclosed herein is a precombustion chamber structure for a gas engine. The precombustion chamber structure is configured to facilitate disassembly of a precombustion chamber tip, thus making maintenance, repair or inspection of the precombustion chamber easy. For this, the precombustion chamber structure includes: a body ( | 06-19-2014 |
20140116859 | 3-WAY SWITCH FOR A GAS-INSULATED APPARATUS - Provided is a 3-way switch for a gas-insulated apparatus, including a pressure container having a space part therein, the pressure container including a first connecting part in an upper portion of the space part and a second connecting part in a side portion of the space part such that the second connecting part is perpendicular to the first connecting part, a support conductor provided in the space part, the support conductor having a first guide hole defined in a direction perpendicular to the direction of the first connecting part and a second guide hole defined in a direction parallel to the direction of the second connecting part, a disconnecting switch (DS) operating part slidably coupled to the first guide hole, the DS operating part being connected to or separated from the first connecting part by means of an insertion or extrusion thereof, an earthing switch (ES) operating part slidably coupled to the second guide hole such that the ES operating part is perpendicular to the disconnecting switch operating part, the ES operating part being connected to or separated from the second connecting part through an insertion or protrusion thereof, and a main lever, one end of which is rotatably coupled to the support conductor and the other end of which is eccentrically rotated and rotatably connected to the DS operating part and the ES operating part so as to linearly slide the DS operating part and the ES operating part into neutral positions. | 05-01-2014 |
20140083832 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes an enclosure, a first fixed conductor, one side of the first fixed conductor being bent at a right angle and another side of the first fixed conductor being fixed on one side of the enclosure, a second fixed conductor configured to be spaced apart from the first fixed conductor and configured to be fixed on another side of the enclosure, a screw configured to form an axis on inner of the enclosure and being spaced apart from the first and second fixed conductors and a movable conductor configured to move along the axis through a rotation of the screw, one side of the movable conductor being in contact with the second fixed conductor. | 03-27-2014 |
20140078648 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes a support frame, a first fixed conductor being installed on one side of the support frame, a second fixed conductor opposing the first fixed conductor and being installed on another side of the support frame, a screw forming an axis on inner of the support frame and being spaced apart from the first and second fixed conductor, a first movable contact wherein one side of the first movable contact is bent and another side of the first movable contact moves along the axis through a rotation of the screw and a second movable contact wherein one side of the second movable contact is bent and another side of the second movable contact is move along the axis through a rotation of the screw. | 03-20-2014 |
20140062498 | DEVICE FOR MONITORING INTERNAL ARC IN GAS INSULATED SWITCHGEAR - A device for monitoring internal arc in gas insulated switchgear. The device includes: at least one or more partial discharge sensors that electronic wave signals of partial discharge generated by internal arc in a gas section of the gas insulated switchgear; at least one or more gas pressure wave sensors that measure pressure wave signals due to expansion of a gas produced by internal arc in the gas section of the gas insulated switchgear; a data acquiring unit that receives the electronic wave signals measured by the partial discharge sensors and the pressure wave signals measured by the gas pressure sensors, finds out internal arc on the basis of the received sensor measure information, and determines the reason and the position of the internal ark; and a transmitting unit that transmits the sensor measurement information and determination information from the data acquiring unit to a super-system. | 03-06-2014 |
20140048493 | ELECTROLYSIS BALLAST WATER TREATMENT SYSTEM FOR PREVENTING EXPLODING OF SHIP AND A CONTROL METHOD USING THE SAME - The present invention relates to a device for treating ballast water using an electrolysis method so as to prevent ship explosions, and to a method for controlling the prevention of ship explosions using same. The device for treating ballast water using an electrolysis method is installed in a ship, wherein the apparatus comprises: a partition wall for separating an explosion danger zone in which a ballast tank is installed, and a safety zone in which the apparatus for treating ballast water is installed; a chlorine-injection tube linearly passing through said partition wall so as to connect the apparatus for treating ballast water to the ballast tank; and a compressor installed in said chlorine-injection tube so as to maintain a positive pressure in said chlorine-injection tube by transferring water into said chlorine-injection tube, even when an operation using the chlorine-injection tube is stopped. | 02-20-2014 |
20140028324 | CUBICLE TYPE GAS INSULATED SWITCHGEAR MONITORING AND DIAGNOSIS SYSTEM - The disclosure relates to a cubicle type gas insulated switchgear monitoring and diagnosis system that is able to remotely monitor and diagnose the state by measuring and analyzing in real time deterioration of a gas section and the operation state and the integrity assessment of a breaking unit in a cubicle gas insulated switchgear. The system includes the cubicle gas insulated switchgear, a Slave Data Acquisition System connected to the cubicle gas insulated switchgear, and a Master Data Acquisition System that determines deterioration of the cubicle type gas insulated switchgear and the operation state and the integrity assessment of the breaking unit by receiving and analyzing the sensing data from the S-DAS. | 01-30-2014 |
20130322136 | ADVANCED CIRCUIT ARRANGEMENT OF TRANSFORMERLESS 1 PHASE PV INVERTER - Disclosed is an inverter with outputs being connected through two reactors to a utility network, whilst an energy storage capacitor (C) is connected to the PV array (P) such that the C + and − terminals are connected to two half bridges creating an H bridge so that the AC node of one half bridge is connected to the anode of a diode (D1) and the cathode of a diode (D2). An AC node of the other half bridge is connected to an anode of a diode (D3) and a cathode of a diode (D4), whilst the diodes form a diode bridge having a positive node connected to a transistor's (V5) collector and an anode of a diode (D5), the cathode of the diode (D5) being connected to C's positive terminal. | 12-05-2013 |
20130306710 | Pipe Welding Apparatus - Provided is a pipe welding apparatus, including: a support fixed to the ground; a torch which is supported by the support and is formed to correspond to a welding portion of a pipe; and a first rotation part for rotating the torch in a circumferential direction of the pipe up to a predetermined angle. | 11-21-2013 |
20130298877 | ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE - An electronically controlled fuel injection valve can independently control the time to inject fuel and the amount of fuel to be injected in response to a control signal sent from the operating condition of an engine unlike a traditional mechanical fuel injection valve, and employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection. The electronically controlled fuel injection valve prevents a nozzle part from being constantly subjected to high pressure due to the nozzle part being not supplied with fuel when fuel is not injected, prevents a large amount of fuel from leaking into a combustion chamber when a part such as a needle is damaged, and simplifies the structure of a second flow path, thereby facilitating fabrication. | 11-14-2013 |
20130214065 | FUEL-INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE - Disclosed herein is a fuel injection valve for an internal combustion engine. The fuel injection valve includes a valve body ( | 08-22-2013 |
20130200174 | TWO-STAGE FUEL INJECTION VALVE - The present invention relates to a two-stage fuel injection valve. The two-stage fuel injection valve of the present invention is configured such that the pressure of main fuel delivered from an injection pump is applied to a plunger in a main fuel chamber, and subsequently delivered to an ancillary fuel pressure chamber via the plunger so as to compress ancillary fuel, such that a needle is retracted in a manner similar to those of slide valves by means of the pressure of the ancillary fuel so as to open an ancillary fuel nozzle hole and inject the ancillary fuel, and a main fuel nozzle hole is opened after the injection of the ancillary fuel so as to inject the main fuel, thereby conducting two-stage fuel injection. | 08-08-2013 |
20130170104 | GAS INSULATED SWITCHGEAR WITH WITHDRAWABLE CIRCUIT BREAKER UNIT - A GIS (Gas Insulated Switchgear) includes a main bus compartment including a main bus-bar unit, a transfer bus compartment including a transfer bus-bar unit, a sealed circuit breaker compartment including a circuit breaker unit and a load side compartment including a current transforming unit and a transfer bus conductor electrically coupling the transfer bus-bar unit and the current transformer unit. The circuit breaker unit is contained in the sealed circuit breaker compartment being separately independent from other compartments. The transfer bus conductor passes from the transfer bus-bar unit through the load side compartment to the current transformer unit without passing through the circuit breaker compartment. The sealed circuit breaker compartment and the load side compartment do not share insulating gas. | 07-04-2013 |
20130156620 | FUEL INJECTION PUMP INCLUDING A VARIABLE PRESSURE COMPARTMENT - The present invention relates to a fuel injection pump having a variable pressure chamber which can adjust a fuel injection timing according to each engine load with a simple structure and a lower manufacture cost compared to the conventional injection pump without a separate apparatus for moving a barrel as well as not modifying a shape of a plunger. | 06-20-2013 |
20130140929 | EXPLOSION-PROOF, COMPOUND ELECTRIC MOTOR - Provided is a combined explosion-proof electromotor, which includes a body in which an interior space is formed and whose one end is open in an axial direction, a terminal box whose one end is open in the axial direction so as to face the open end of the body and in which a space is formed to hold terminal cables extending from the outside, and a middle plate that is disposed between the opposing ends of the body and the terminal box which are connected by separate fastening means and that includes terminal insertion holes through which ends of the terminal cables are inserted into the body. | 06-06-2013 |
20130139790 | TWO-PHASE FUEL INJECTION VALVE FOR DIESEL ENGINE AND GAS ENGINE INCLUDING NOZZLE HAVING PUMPING FUNCTION - The present invention relates to a dual fuel injection valve having a pumping nozzle for a diesel engine and a gas engine, and an objective of the present invention is to provide a fuel injection valve in which, by using two kinds of fuel entering into a fuel valve, a warming up and injection of pilot fuel may be performed in an initial injection and injection of main fuel may be performed subsequently such that subsequent dual fuel is used for combustion, thereby increasing fuel injection performance. | 06-06-2013 |
20130074811 | FUEL INJECTION PUMP HAVING A SEPARABLE PLUNGER - A fuel injection pump having a separable plunger includes a separable plunger of which outer circumference is slide coupled to an inside of the a such that a lower portion thereof is supported by an upper portion of a main plunger to enable upward and downward slide movement in association with the main plunger, wherein an injection timing control spiral step of which upper surface is formed in a spiral shape, is protrudingly formed on the outer circumference thereof and a fuel passage is formed on one side of the outer circumference thereof including the injection timing control spiral step and an elastic member having a lower portion elastically supported by the separable plunger and an upper portion inserted within the barrel to be supported by an upper surface of the barrel. | 03-28-2013 |
20130068193 | DUAL FUEL INJECTION VALVE APPARATUS INCLUDING A HYBRID NOZZLE FOR DIESEL AND GAS ENGINES - The present invention relates to a dual fuel injection valve apparatus provided with a hybrid nozzle for a diesel engine and a gas engine and an objective thereof is to provide a dual fuel injection valve apparatus provided with a hybrid nozzle for a diesel engine and a gas engine, being capable of respectively injecting two kinds of different fuels from one fuel injection valve by pressure of fuel and tension of a spring. | 03-21-2013 |
20130037004 | TWO SOLENOID VALVE RELAY TWO-STAGE FUEL INJECTION VALVE FOR DIESEL ENGINES - The present invention provides a two solenoid valve relay with a two-phase fuel injection valve for a diesel engine, which is installed on a valve itself to enable injection at pressure greater than opening pressure, at which the fuel enters into a fuel valve, thereby improving fuel injection performance, and which is configured to enable adjustment of an injection timing at the opening pressure within the valve, wherein injection timings through a solenoid valve is provided for low load and high load, respectively, such that a distinct difference exists between the injection timings to open the nozzle hole of the nozzle in a differential manner at pressure higher than the pressure, at which the fuel enters to the fuel valve and internal spring opening pressure, thereby injecting fuel at high pressure even at low load to facilitate vaporization, and wherein, in case of a high speed operation or high load, low pressure/high pressure needle valves are opened at the same time to quickly inject fuel of a high volume through a plurality of nozzle holes, thereby improving combustion performance of an engine, and wherein a space between the needle valve and the nozzle hole which are closed after the injection is minimized because the nozzle hole is opened differentially and sequentially according to pressure, thereby avoiding waste of fuel and reducing harmful gas (smoke, Nox). | 02-14-2013 |
20130015274 | INJECTION SYSTEM OF A FUEL INJECTION PUMPAANM Kang; Sang LipAACI Seocho-guAACO KRAAGP Kang; Sang Lip Seocho-gu KRAANM Kim; Ju TaeAACI Dong-guAACO KRAAGP Kim; Ju Tae Dong-gu KRAANM An; Kwang HeanAACI Dong-guAACO KRAAGP An; Kwang Hean Dong-gu KRAANM Kim; Dong HunAACI Dong-guAACO KRAAGP Kim; Dong Hun Dong-gu KRAANM Yoon; Wook HyeonAACI Dong-guAACO KRAAGP Yoon; Wook Hyeon Dong-gu KRAANM Lee; Yong SeokAACI Dong-guAACO KRAAGP Lee; Yong Seok Dong-gu KRAANM Park; Hyun ChunAACI Dong-guAACO KRAAGP Park; Hyun Chun Dong-gu KR - The injection system of a fuel injection pump is provided. In the injection system of a fuel injection pump, a plunger performs a reciprocating slide motion in the axial direction inside of the plunger chamber of a barrel for compressing fuel. The plunger has a release groove and a control edge. A spill port is formed in the wall surface of the barrel. A damping groove is formed in the upper-part outer circumference of the control edge and provides a fine fuel flow path. The damping groove meets the spill port in advance to form the fine flow of fuel from the plunger chamber to the spill port before the control edge of the plunger meets the spill port to release pressure. | 01-17-2013 |
20120325937 | TWO-STAGE FUEL INJECTION VALVE FOR A DIESEL ENGINE, COMPRISING A SOLENOID VALVE AND A SHUTTLE VALVE - Disclosed herein is a two-stage fuel injection valve for a diesel engine. The valve includes a fuel valve block ( | 12-27-2012 |
20120288980 | METHOD FOR MANUFACTURING A BACK CONTACT SOLAR CELL - A method for manufacturing a back contact solar cell according to the present invention comprises the following steps: preparing a p-type silicon substrate having a via hole; performing a diffusion process to form an emitter layer all over the surface of the substrate; forming an etching mask on the front surface and back surface of the substrate so as to selectively expose a portion of the substrate; etching a portion of the thickness of the substrate in the region exposed to the etching mask so as to remove an emitter layer in the relevant region; forming an anti-reflection film on the front surface of the substrate; and forming a grid electrode on the front surface of the substrate, and forming an n-electrode and a p-electrode on the back surface of the substrate. | 11-15-2012 |
20120282732 | METHOD FOR FABRICATING A BACK CONTACT SOLAR CELL - The present disclosure relates to a method for manufacturing a back electrode-type solar cell. The method for manufacturing a back electrode-type solar cell disclosed herein includes: A method for manufacturing a back electrode-type solar cell, comprising: preparing an n-type crystalline silicon substrate; forming a thermal diffusion control film on a front surface, a back surface and a side surface of the substrate; forming a p-type impurity region by implanting p-type impurity ions onto the back surface of the substrate; patterning the thermal diffusion control film so that the back surface of the substrate is selectively exposed; and forming a high-concentration back field layer (n+) at an exposed region of the back surface of the substrate and a low-concentration front field layer (n−) at the front surface of the substrate by performing a thermal diffusion process, and forming a p+ emitter region by activating the p-type impurity region. | 11-08-2012 |
20120279562 | BACK-SURFACE-FIELD TYPE OF HETEROJUNCTION SOLAR CELL AND A PRODUCTION METHOD THEREFOR - The back-surface-field type of heterojunction solar cell according to the present invention comprises a crystalline silicon substrate of a first conductivity type, a semiconductor layer of the first conductivity type provided in the upper stratum of the substrate, an anti-reflective film provided on the front surface of the substrate, an intrinsic layer provided on the rear surface of the substrate, amorphous semiconductor layers of the first conductivity type and amorphous semiconductor layers of the second conductivity type repeatedly disposed alternately on the intrinsic layer, and first-conductivity-type electrodes and second-conductivity-type electrodes which are respectively provided on the amorphous semiconductor layers of the first conductivity type and the amorphous semiconductor layers of the second conductivity type. | 11-08-2012 |
20120270356 | METHOD FOR MANUFACTURING A SOLAR CELL - The present invention provides a method for manufacturing a solar cell. The method for manufacturing a solar cell comprises: forming via holes in a silicon wafer; forming a shallow emitter on the front surface and the rear surface of the wafer, connecting the inner walls of the via holes and the via holes; and selectively forming an emitter through the heavy doping of a dopant to provide a plurality of regions along a direction linking the via holes of the shallow emitter with a certain concentration or higher. Accordingly, the present invention can selectively form an emitter on an MWT solar cell by performing laser doping or etching on a region contacting a front surface electrode having a certain width and height. | 10-25-2012 |
20120255608 | BACK-SURFACE-FIELD TYPE OF HETEROJUNCTION SOLAR CELL AND A PRODUCTION METHOD THEREFOR - The back-surface-field type of heterojunction solar cell according to the present invention comprises a crystalline silicon substrate of a first conductivity type, an intrinsic layer and an amorphous silicon layer of the first conductivity type which are laminated in sequence on the front surface of the substrate, an anti-reflective film laminated on the amorphous silicon of the second conductivity type, junction regions of the first conductivity type and junction regions of the second conductivity type which are formed to a predetermined depth on the inside of the substrate from the rear surface of the substrate, and first-conductivity-type electrodes and second-conductivity-type electrodes which are respectively provided on the junction regions of the first conductivity type and the junction regions of the second conductivity type; wherein the first-conductivity-type electrodes and the second-conductivity-type electrodes are disposed alternately. | 10-11-2012 |
20120176222 | APPARATUS FOR MANAGING THE OPERATION OF A SHIP BLOCK - Provided is an apparatus for managing the operation of a ship block, including a ship block size and location measuring system, a transporter monitoring system, a block transportation monitoring system and a transportation lot number management system. The ship block size and location measuring system includes a direction angle sensor, a range finder, a radio frequency identification (RFID) reader and a control system, and the control system includes a block size and location measuring server, a vector calculating module, a coordinate calculating module, a size and location extracting module, and a memory module. | 07-12-2012 |
20120145225 | TRENCH LINE FOR THE DISCONNECTION OF A SOLAR CELL - Provided is a trench line for the disconnection of a solar cell, capable of effectively insulating a semiconductor layer at an upper portion of a substrate from a semiconductor layer at a side portion of the substrate and improving disconnection reliability. The trench line for the disconnection of a solar cell according to the disclosure which electrically insulates the semiconductor layers formed at the upper portion and the side portion of the substrate of the solar cell from each other, includes a plurality of unit trench lines which are disposed to intersect at an upper surface of the substrate of the solar cell. Intersecting points of the intersecting unit trench lines are positioned on the unit trench lines and are positioned at points spaced inwardly from starting points or ending points of the unit trench lines by a predetermined distance. | 06-14-2012 |
20120111258 | AIR CAVITY VESSEL HAVING LONGITUDINAL AND TRANSVERSE PARTITIONS - An air cavity vessel having longitudinal and transverse partitions is provided. The air cavity vessel, which injects air into the bottom thereof to form air layers in order to reduce resistance of the vessel, includes transverse partitions partitioning the bottom in a transverse direction, longitudinal partitions partitioning the bottom in a longitudinal direction, spatial areas defined in a grid pattern by the transverse partitions and the longitudinal partitions, an air supply unit installed in a forebody of the vessel and supplying compressed air into the spatial areas, and a compressor for supplying the compressed air to the air supply unit. Thereby, multiple air layers are formed on a bottom flat area on a small scale. | 05-10-2012 |
20110259302 | APPARATUS FOR PREVENTING CAVITATION DAMAGE TO A DIESEL ENGINE FUEL INJECTION PUMP - The present invention relates to an apparatus for preventing cavitation damage to a diesel engine fuel injection pump, wherein a pressure control valve for shutting a barrel port is mounted on a deflector or a barrel of the fuel injection pump to increase the fuel pressure in the barrel port during an early stage of fuel compression. This prevents fountain-type or jet-type cavitation from occurring before and after the opening of the barrel port during a late stage of fuel compression, thereby preventing corrosion damage caused by cavitation occurring mainly in a plunger and the barrel port of the fuel injection pump. The key technical features of the present invention are for an apparatus for preventing cavitation damage to a diesel engine fuel injection pump having a fuel intake valve and the barrel port for the inflow and outflow of fuel, respectively, comprising: a valve member mounted on the barrel port to shut the barrel port during an early stage of fuel compression performed by the upward movement of the plunger to increase the pressure in the barrel port; a valve housing installed in the deflector or the barrel of a pump housing to support the valve member; and a pressure control valve constituted by a spring interposed between the valve member and the valve housing to elastically support the valve member. The barrel port is shut to increase the pressure therein during the early stage of fuel compression, and thus preventing cavitation caused by the pressure difference between the barrel port and a pump chamber before and after the opening of the barrel port during the late stage of fuel compression. When the pressure of fuel in the barrel port exceeds a level higher than an open level, the barrel port opens to discharge fuel. | 10-27-2011 |
20090072940 | SYSTEM FOR PREVENTING RUPTURE OF TRANSFORMER TANK - Disclosed herein is a rupture prevention system, which increases a limit of the deformation of a transformer tank, thus primarily preventing a sudden rise in pressure, and which increases the number of rupture disc per unit area, thus preventing the rupture of the tank wherever the arc is generated in tank. The system includes a support part installed in the transformer tank and supporting a shielding plate so that it is not directly attached to the transformer tank. A plurality of rupture discs is mounted to pipes extending outwards from the transformer tank, and is ruptured when pressure in the transformer tank reaches a predetermined pressure level. A plurality of relief tanks is vertically installed at a position neighboring the transformer, and is coupled to the pipes. Further, an oil gauge is mounted at a lower position in each of the relief tanks, and generates a signal when the insulating oil flows into the relief tank. | 03-19-2009 |