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| Number | Title | Issue Date |
| 7308792 | Steam power plant arrangement A steam power plant arrangement with a steam turbine and a steam generator, a condenser and a preheating system is characterized according to the invention in that the steam generator, the condenser and the preheating system are configured as individual functionally... | 12/18/2007 |
| 7245688 | Cooling system This invention relates to a nuclear reactor plant which includes a nuclear heat source (12), and a cooling system (10). The cooling system (10) includes at least two cooling circuits (26), each of which includes a plurality of coolant cha... | 07/17/2007 |
| 7218068 | Power source for re-circulation pump and method of controlling the same A variable-voltage variable-frequency power source for an electric motor that drives a re-circulation pump for a boiling water nuclear reactor. The power source has a semiconductor electric power converter and a speed controller for controlling the semiconductor ele... | 05/15/2007 |
| 7154982 | Compact pressurized water nuclear reactor A compact pressurised water nuclear reactor comprises a primary circuit fully integrated into the reactor vessel (10). Thus, a single steam generator (12) forms the cover of the vessel (10) and the pressuriser (30) and the primary pumps (... | 12/26/2006 |
| 7007474 | Energy recovery during expansion of compressed gas using power plant low-quality heat sources A method of recovering energy from a cool compressed gas, compressed liquid, vapor, or supercritical fluid is disclosed which includes incrementally expanding the compressed gas, compressed liquid, vapor, or supercritical fluid through a plurality of expansion engin... | 03/07/2006 |
| 6941757 | Power cycle and system for utilizing moderate and low temperature heat sources A new thermodynamic cycle is disclosed for converting energy from a low temperature stream, external source into useable energy using a working fluid comprising of a mixture of a low boiling component and a higher boiling component and including a higher pressure ci... | 09/13/2005 |
| 6944255 | Nuclear reactor A nuclear reactor in which a secondary or tertiary coolant system of a nuclear steam supply system is simplified, comprising: a reactor vessel (2) which integrates a reactor core (1); a first coolant (3) which is stored in the reactor vessel ( | 09/13/2005 |
| 6914955 | Heat exchanger tube support structure A support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving apertures formed therein. Each aperture has at least three inwardly protruding members and bights are... | 07/05/2005 |
| 6909765 | Method of uprating an existing nuclear power plant An improved method of increasing the power output of an existing nuclear power plant includes increasing the thermal power output of the plant's nuclear island and constructing of an auxiliary BOP to handle the increased thermal power. The thermal power of the nucle... | 06/21/2005 |
| 6904754 | Steam generator for liquid metal reactor and heat transfer method thereof Disclosed herein is a steam generator for a liquid metal reactor and a heat transfer method thereof, and more particularly a steam generator for a liquid metal reactor having intermediate fluid forcibly circulated therein and structurally improved coiled heat transf... | 06/14/2005 |
| 6810101 | Heat exchanger tube support structure A support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving aperture formed therein. Each apertures has at least three inwardly protruding members and bights are... | 10/26/2004 |
| 6795518 | Integral PWR with diverse emergency cooling and method of operating same Passive emergency cooling in response to a loss of coolant accident (LOCA) in a PWR, having an integral reactor pressure vessel incorporating the steam generators and housed in a small high pressure containment vessel, is provided by circulating cooling water throug... | 09/21/2004 |
| 6674830 | Nuclear reactor plant The subject of the present invention is to provide a nuclear reactor plant of which is a direct cycle nuclear reactor using a carbon dioxide as a coolant such that a heat evacuation for liquefying coolant is reduced while a compressive work is reduced by ... | 01/06/2004 |
| 6498827 | Heat exchanger tube support structure A support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving apertures formed therein. Each apertures has at least three inwardly protruding members an... | 12/24/2002 |
| 6459750 | Turbine generator and operating method thereof, and nuclear power plant and operating method thereof A turbine generator has a water cooling system for cooling the inside of a stator coil with water, wherein the water cooling system includes a water storage tank for storing water; pipes connecting the water storage tank and the stator coil, the pipes bei... | 10/01/2002 |
| 6021169 | Feedwater control over full power range for pressurized water reactor steam generators A feedwater control system and method for a pressurized water reactor steam generating system having first and second output signals. The first output signal is determined by first and second input signals, and, when combined with a third input signal aut... | 02/01/2000 |
| 5896434 | Power supply system for driving reactor coolant recirculation pumps A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor is configured in such a manner that: at least one normal-operation busbar branches off from either a main on-site power line or from a power lin... | 04/20/1999 |
| 5754613 | Power plant The disclosed power plant can attain an extremely high thermal efficiency, as compared with that of the conventional power plant. The power plant comprises a steam system and a mixed medium system. The steam system comprises a heat source (1) for generati... | 05/19/1998 |
| 5604777 | Nuclear reactor coolant pump In a nuclear reactor water cleanup pump, a purge fluid is continuously delivered during at least the operation of the pump into the cavities containing the bearings and the electrical motor at a desired flow rate. The desired flow rate being based on the ... | 02/18/1997 |
| 5555280 | Process and device for producing a leakproof protective coating on a surface of a nuclear reactor component The surface of the component (1, 2) to be protected is scanned, a jet of semitransferred arc plasma (17) into which a metal powder is introduced. The process can be applied to the production of a layer of coating (18) on the outer surface of a region of w... | 09/10/1996 |
| 5526386 | Method and apparatus for steam mixing a nuclear fueled electricity generation system A method and apparatus for improving the efficiency and performance of a nuclear electrical generation system that comprises the addition of steam handling equipment to an existing plant that results in a surprising increase in plant performance. More par... | 06/11/1996 |
| 5492169 | Tube lane pivoting device for nuclear steam generator A steam generator for a nuclear power station in which the flow of secondary fluid is deflected and distributed by a block articulated on a fixed horizontal pivoting spindle, such as to retain maintenance access to the tube place by tooling introduced thr... | 02/20/1996 |
| 5493591 | Internal pump for nuclear reactors A nuclear internal pump is disclosed in which a flywheel and a thrust disc acting as an auxiliary impeller are fixed on a motor shaft. Fixed orifices X and Y are formed respectively between outer circumference section at larger and smaller diameter sides ... | 02/20/1996 |
| 5457721 | Method and apparatus for improving the performance of a nuclear power electrical generation system A method and apparatus for improving the efficiency and performance a of nuclear electrical generation system that comprises the addition of steam handling equipment to an existing plant that results in a surprising increase in plant performance. More par... | 10/10/1995 |
| 5361377 | Apparatus and method for producing electrical power A method for producing electrical power from steam generated by a nuclear reactor comprising the steps of: providing a nuclear reactor engaged to a steam generator for generating steam when heated aqueous product is passed therethrough; and passing heated... | 11/01/1994 |
| 5335629 | Preheating steam generator In a preheating steam generator, the secondary water is introduced into a preheating space (34) by deformable extensions (52) from inverted J tubes (50) fixed to a semi-torroidal supply collector (48). The structure may be in the form of three tubular seg... | 08/09/1994 |
| 5335252 | Steam generator system for gas cooled reactor and the like A steam generator which finds particular application as a superheater and reheater for transfer of heat from the gas coolant of a nuclear power reactor to a secondary fluid medium. The lower pressure reheater is located inside of the nuclear pressure vess... | 08/02/1994 |
| 5331677 | Pressurized water reactor plant A pressurized water reactor plant includes a reactor vessel (1), a reactor coolant pump (5) having an inlet connected by coolant pipe (2) to an outlet of the reactor vessel, a steam generator (10) having an inlet connected by a high-temperature side pipe ... | 07/19/1994 |
| 5329565 | Stayrod arrangement Stayrod arrangement for enhancing removal of sludge from nuclear heat exchangers. The stayrod arrangement includes a rod disposed adjacent a plurality of heat exchange tubes defining a tube lancing lane therebetween, the tube lane having sludge deposits t... | 07/12/1994 |
| 5267288 | Power station installation In a power station installation which is designed as a combined installation, i.e. consists of a gas turbine group (2, 3, 4, 5, 6, 8) and of a steam cycle (13, 16, 17, 18, 19, 20) downstream of the gas turbine group, the steam rate being generated in a wa... | 11/30/1993 |
| 5143515 | Pump with seal purge heater A pump assembly which overcomes a shaft and cover cracking problem comprising a means for heating the seal purge water flowing along the shaft before it exits into an annulus (mixing region) thus reducing the temperature difference between the cooler seal... | 09/01/1992 |
| 5110538 | Preheating steam generator In a preheating steam generator, the feed water is distributed in a feed space (34) by inverted J-shaped tubes (50), so as to mix with the recirculation water passing out of the water-steam separators, which ensures the preheating of said feed water. In o... | 05/05/1992 |
| 5084236 | Converging spout outlet nozzle on an offset pump casing A nuclear reactor coolant pump for pumping reactor coolant fluid in a reactor coolant system includes a casing, a rotor and an impeller. The casing defines an inlet nozzle for receiving the fluid, a peripheral outlet nozzle for discharging the fluid, and ... | 01/28/1992 |
| 5045272 | Fluid temperature balancing system A steam generating system including a heat energy source, a feedwater heating section including at least one heat exchange unit (2) having a feedwater inlet, a device (10) for supplying feedwater to the feedwater inlet of the heat exchange unit (2), and a... | 09/03/1991 |
| 5017102 | Magnetically coupled pump and nuclear reactor incorporating said pump A magnet pump has a magnet coupling for magnetically coupling an inner ring yoke and an outer ring yoke so as to magnetically transmit a torque from driving part to driven part of the pump to rotate the driven part. The magnet pump comprises magnetized ma... | 05/21/1991 |
| 5009838 | Internal pump for nuclear reactor A nuclear reactor internal pump has a pump shaft connected to a motor and rotatably passing through the bottom of a nuclear reactor pressure vessel, an impeller fitted to a front end portion of the pump shaft, a diffuser disposed on the downstream side of... | 04/23/1991 |
| 4909981 | Nuclear reactor A novel liquid nuclear reactor is described which comprises a reactor vessel that is connected through upper and lower liquid conduit means to one or more satellite tanks that contain a heat exchanger means and pump means.... | 03/20/1990 |
| 4859402 | Bottom supported liquid metal nuclear reactor A liquid metal nuclear reactor has a sodium tank, having a closed arcuate bottom and upstanding cylindrical wall for containing a reactor core in a pool of liquid metal coolant, which is disposed in a guard tank having a bottom and upwardly extending cyli... | 08/22/1989 |
| 4832898 | Variable delay reactor protection system A system for variably delaying reactor trip and auxiliary feedwater system actuation resulting from a low water condition in a steam generator includes a plurality of sensors for determining both whether a low water condition exists in each steam generato... | 05/23/1989 |
| 4830053 | Fluidic devices A fluidic device, in particular a vortex diode, has a vortex chamber formed by spaced apart end walls and a peripheral side wall. An axial port is provided in one end wall and a further port permitting tangential flow into or out of the chamber is provide... | 05/16/1989 |
