Class / Patent application number | Description | Number of patent applications / Date published |
060657000 | Having apparatus cleaning, sealing, lubricating, purging, standby, or protecting feature | 29 |
20080223043 | FILTERING APPARATUS, BACK WASH METHOD THEREFOR, FILTERING DEVICE AND POWER PLANT - A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin. | 09-18-2008 |
20090031726 | STEAM TURBINE INSTALLATION AND ASSOCIATED OPERATING METHOD - A steam turbine installation ( | 02-05-2009 |
20090151355 | FILTERING APPARATUS, BACK WASH METHOD THEREFOR, FILTERING DEVICE AND POWER PLANT - A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin. | 06-18-2009 |
20090188253 | Expander Lubrication in Vapour Power Systems - A vapour power generating system for generating power by using heat from a source of heat. The system has a closed circuit for a working fluid, and includes a heat exchanger assembly ( | 07-30-2009 |
20090241544 | Method of Increasing Service Interval Periods in a Steam Turbine - A method of increasing service interval periods in a steam turbine by neutralizing sodium hydroxide in contaminated steam in a high temperature and a high pressure portion of a steam turbine by placing a protective covering over at least a portion of each of the bolts of a nozzle block assembly. The protective covering neutralizes contaminants in contaminated steam to reduce stress cracking of the bolts during steam turbine operation, and thus extend the useful life of the bolts and reduce the need for service work to repair or replace damaged bolts. | 10-01-2009 |
20090266076 | Condensate Polisher Circuit - A power generating system including a working fluid circuit. The power generating system includes a condenser system in the working fluid circuit and a condensate polisher circuit. The condenser system receives a working fluid that includes steam or a combination of water and steam and condenses at least a portion of the working fluid into a condensate. The condensate has a temperature above a predetermined upper operating temperature. The condensate polisher circuit is branched off from the working fluid circuit and receives and treats said condensate from the working fluid circuit and returns treated condensate to the working fluid circuit. The condensate polisher circuit includes a heat exchanger that reduces the temperature of the condensate at least to the upper operating temperature and a condensate polisher that removes contaminants from the condensate to bring the condensate to a predetermined purity. | 10-29-2009 |
20090272114 | HEAT RECOVERY EQUIPMENT - Heat recovery equipment recovers heat from flue gas. The heat recovery equipment includes a power generation plant that drives a steam turbine by superheated steam produced in a boiler, and an exhaust-gas treatment line that treats flue gas output from the boiler. The exhaust-gas treatment line includes a first air preheater, a heat extractor unit, and a dry electrostatic precipitator. The power generation plant includes a condensed water line. The condensed water line includes a condenser, a condensed water heater, and a low-pressure feedwater heater. The condensed water heater heats water condensed by the condenser with the heat recovered by the heat extractor unit. | 11-05-2009 |
20090288418 | MOISTURE SEPARATOR - In a moisture separator, a manifold that communicates with a steam inlet is disposed in a shell; a plurality of blowout outlets for steam is provided on a side of the manifold; a first support plate and a lower support frame are fixed to a lower part in the shell to compart a steam drift space and a drain path; a moisture separating element is provided corresponding to the manifold; steam from which moisture is removed by the moisture separating element is heated by the group of the heating tubes to flow as high-temperature reheat steam to the steam outlet; the moisture is led from the drain opening through the drain path to the drain outlet; and a blocking plate that blocks a part of the drain opening is provided. | 11-26-2009 |
20090320478 | Reduced boundary layer separation steam jet air ejector assembly and method - A steam jet air ejector and a method for improving the performance of a steam jet air ejector in a nuclear reactor, the boundary layer separation reduction assembly for the steam jet air ejector includes a discharge diffuser including a plurality of vacuum ports positioned along an inner surface of the discharge diffuser and a vacuum source coupled to the vacuum ports. | 12-31-2009 |
20100199670 | Power Generation Plant Having Inert Gas Deaerator and Associated Methods - A power generation plant includes a steam turbine and an electrical generator driven thereby. A condenser is downstream from the steam turbine. Moreover, the power generation plant includes a steam source and an inert gas source. A deaerator downstream from the condenser and is operable to perform deaeration using the inert gas source and is also selectively operable to perform deaeration using the steam source. | 08-12-2010 |
20100199671 | Deaerator Apparatus in a Superatmospheric Condenser System - A power generating system comprises a condenser and a deaerator apparatus. The condenser condenses a working fluid into a condensate and operates at an internal pressure above ambient pressure during a normal operating mode. The deaerator apparatus uses steam to remove contaminants from the condensate to bring the condensate to a desirable purity. The deaerator apparatus is deactivated during a typical operating state of the power generating system such that the condensate bypasses the deaerator apparatus. The deaerator apparatus is activated during a non-typical operating state of the power generating system such that the condensate passes into the deaerator apparatus wherein contaminants can be removed from the condensate. The typical operating state of the power generating system occurs when the condensate comprises a desirable purity and the non-typical operating state of the power generating system occurs when the condensate comprises an undesirable purity. | 08-12-2010 |
20110072821 | Control Device and Method for a Quick-Acting Gate Valve of a Steam Turbine - A control device for a quick-closing valve of a steam turbine including a relief valve for reducing a hydraulic pressure opening the quick-closing valve, and a relief valve control valve arrangement having at least three valves which are hydraulically interconnected with the relief valve in such a way that the relief valve does not close the quick-closing valve unless at least two valves of the relief valve control valve arrangement are switched to a quick-closing position. The system includes a test control valve arrangement for selectively reducing and increasing the hydraulic pressure opening the quick-closing valve when the relief valve is closed. | 03-31-2011 |
20110296837 | CLEANING DEVICE FOR A CONVECTION SECTION OF A THERMAL POWER PLANT - A cleaning device includes at least: a holder, a lance having a fluid distribution device, a drive unit for a translational motion of the lance in the holder, and a fluid conducting system having a feed, a return, and flow paths starting from the feed to the return and to the fluid distribution device. At least one actuating means (or actuator) is provided in order to connect the feed to the return or to the fluid distribution device as needed. Furthermore, a method involves cleaning heating surfaces of a convection section of a thermal power plant that includes spaced heat exchanger pipes using such a cleaning device. | 12-08-2011 |
20120079826 | WATER CIRCULATION POWER GENERATION SYSTEM FOR ENERGY RECOVERY - A water circulation power generation system for energy recovery includes at least one water circulation power generation system connected to a heat exchange system to obtain required water for a heat exchange process. The water circulation power generation system includes a water tank to store cooling water, a water supply pipeline and a recovery pipeline. The water supply pipeline draws water from the water tank to supply front end water to the heat exchange system. The recovery pipeline guides operational circulation water discharged from the heat exchange system and has a hydraulic power generator installed thereon driven by the operational circulation water to convert kinetic energy thereof to electric power. Thus during the operational circulation water flows to its recovery destination, its kinetic energy drives the hydraulic power generator to produce additional electric power. | 04-05-2012 |
20120174584 | POWER PLANT SYSTEM HAVING OVERLOAD CONTROL VALVE - A power plant system and a method for operating a power plant system are provided. An overload control valve is disposed in an overload line and can be actuated by means of a pressure regulator wherein the overload control valve opens before a diverting control valve opens the valve forming a bypass between the high-pressure steam inlet and the high-pressure steam outlet as soon as a target valve is exceeded. | 07-12-2012 |
20120304644 | Method for retrofitting a fossil-fueled power station with a carbon dioxide separation device - A method for retrofitting a fossil-fueled power station is provided. The power station includes a multi-housing stream turbine with a carbon dioxide separation device. As per the method, a suction capability of the steam turbine is adapted for an operation of the carbon dioxide separation device to a process steam to be removed. The carbon dioxide separation device is connected via a process steam line to an intermediate superheating line. Further, an auxiliary condenser is connected to the carbon dioxide separation device. On failure or deliberate switching off of the carbon dioxide separation device surplus process steam is condensed in the auxiliary condenser. | 12-06-2012 |
20120312020 | Regeneration of Capture Medium - An apparatus and method for the regeneration of captured gas rich capture medium such as an absorption solution and the recovery of absorbed gas therefrom, an apparatus and method for the removal and recovery of a target gas from a gas stream, and the use of the same for post combustion carbon capture on a thermal power plant are described. The apparatus and method make use of a regenerative heating process. The apparatus and method are distinctly characterized by the use of a heat pump to utilize low grade heat, for example from elsewhere in the process, as a source of thermal energy for the heating process. | 12-13-2012 |
20130042616 | USE OF MOTOR PROTECTION SYSTEM TO ASSIST IN DETERMINING POWER PLANT METRICS - Disclosed herein is an approach that uses a motor protection system to assist in determining power plant metrics. In one aspect, a motor protection system obtains operational data from motor-driven sub-processes operating within a power plant. A controller receives the operational data and determines power plant metrics that may include net power plant output and costs each of the motor-driven sub-processes has on the overall operation of the power plant. In another aspect, the controller may partition the power metrics into one or more user-specified groupings for viewing thereof. | 02-21-2013 |
20130160450 | HEMETIC MOTOR COOLING FOR HIGH TEMPERATURE ORGANIC RANKINE CYCLE SYSTEM - An Organic Rankine Cycle (ORC) system includes a rotor volume at sub-atmospheric pressure, a working fluid sprayed into the rotor volume. | 06-27-2013 |
20140123647 | SEALING STRUCTURE FOR STEAM TURBINE - A stack ring is formed by an outer ring and an inner ring and is inserted in an annular gap formed between an inlet sleeve and an inner casing. The outer periphery of the outer ring and the inner periphery of the inner ring each have a land part having a flat face and taper faces formed on upper and lower sides of the land part. A ratio of L | 05-08-2014 |
20140190165 | POWER PLANT - A binary power generation device is equipped with the flow path of a medium circulating through a heat exchanger, a turbine, a condenser, and a pump. A method for removing air that has intruded into the flow path of the medium includes: an air intrusion detection step of calculating, based on the pressure and temperature of a gas retaining portion communicatively connected to the flow path of the medium, a pressure threshold value obtained by adding the saturated vapor pressure of the medium and a margin value and of detecting, by comparing the pressure of a gas phase portion with the pressure threshold value, that air has intruded into the medium; a medium liquefaction step of producing a gas by pressurizing a mixed gas of the medium and air to reduce the amount of the medium in the mixed gas; and an exhaust step of exhausting the gas. | 07-10-2014 |
20140290250 | Steam Turbine Power Plant - Disclosed is a steam turbine power plant adapted to start operating very efficiently by highly accurate look-ahead control of a plurality of its startup constraints. The power plant includes a fundamental startup constraint prediction device | 10-02-2014 |
20150121874 | ACTIVATION CONTROL DEVICE - Provided is a steam turbine plant activation control device that can flexibly handle an initial state amount of a steam turbine plant and activate a steam turbine at a high speed. The activation control device | 05-07-2015 |
20150369086 | ORGANIC RANKINE CYCLE DECOMPRESSION HEAT ENGINE - An improved heat engine that includes an organic refrigerant exhibiting a boiling point below −35° C.; a heat source having a temperature of less than 82° C.; a heat sink; a sealed, closed-loop path for the organic refrigerant, the sealed, closed-loop path having both a high-pressure zone that absorbs heat from the heat source, and a low-pressure zone that transfers heat to the heat sink; a positive-displacement decompressor providing a pressure gradient through which the organic refrigerant in the gaseous phase flows continuously from the high-pressure zone to the low-pressure zone, the positive-displacement decompressor extracting mechanical energy due to the pressure gradient; and a positive-displacement hydraulic pump, which provides continuous flow of the organic refrigerant in the liquid phase from the low-pressure zone to the high-pressure zone, the hydraulic pump and the positive-displacement decompressor maintaining a pressure differential between the two zones of between about 20 to 42 bar. | 12-24-2015 |
20150377080 | ORGANIC RANKINE CYCLE SYSTEM WITH LUBRICATION CIRCUIT - A Rankine cycle system including a Rankine cycle working circuit and a lubrication circuit is disclosed. The lubrication circuit and the Rankine cycle working circuit include a shared segment including a mixture of Rankine cycle working fluid from the Rankine cycle working circuit and lubricant from the lubrication circuit. A separator receives the mixture of Rankine cycle working fluid and lubricant from the shared segment and separates the Rankine cycle working fluid from the lubricant. The separated Rankine cycle working fluid is directed along the Rankine cycle working circuit from the separator to the heating zone and the separated lubricant is directed along the lubrication circuit from the separator to a mechanical expander. The working fluid and lubricant are recombined after passing separately through the expander and are then introduced to the condensing zone. | 12-31-2015 |
20160102569 | STEAM TURBINE GLAND ARRANGEMENT - A steam turbine gland seal arrangement prevents leakage of steam from around a turbine rotor. The gland seal arrangement includes a chamber formed in a gland carrier attached to a casing component and a heat shield that partitions the chamber from the component. | 04-14-2016 |
20160146057 | WATER REMOVAL DEVICE FOR STEAM TURBINE - A hollow portion is formed inside a stator blade. A slit having an inlet opening on a pressure surface of the stator blade facing wet steam flow is formed that communicates with the hollow portion in the axial direction of the stator blade. The hollow portion communicates with a region having a lower pressure than the flow field of the wet steam flow. The pressure in the hollow portion is reduced to introduce water film flow formed from water drops on the pressure surface of the stator blade to the slit. The slit is formed at a downstream side end, in the flow direction of the wet steam flow, of the hollow portion, and the stator blade trailing edge side wall surface of the slit is at an acute angle to a leading edge side reference plane of the pressure side of the stator blade. | 05-26-2016 |
20160169054 | EXHAUST CHAMBER COOLING APPARATUS AND STEAM TURBINE POWER GENERATING FACILITY | 06-16-2016 |
060658000 | Damage to heat receiving element prevented by automatic means maintaining minimum flow | 1 |
20140102103 | Gas Compressor - A gas compressor includes a compressor unit having a compressor body for compressing gas and an electricity-generation device generating electricity by obtaining a driving force by vaporizing a working fluid utilizing exhaust heat generated by a compressing action in the compressor body and expanding the working fluid so as to utilize the power generated by the electricity-generation device as a power source, and includes a switch device switching between power from the electricity generation device and power from a commercial power supply to supply power to the power consumption equipment, and a control device detecting an electricity-generation amount or a value correlative to the electricity generation amount and switching between the powers by the switch device, thereby generating the power using exhaust heat as a heat source to surely drive an auxiliary machine by a simple configuration regardless of a shortage of the electricity generation amount. | 04-17-2014 |