| THE TOKYO ELECTRIC POWER COMPANY, INCORPORATED Patent applications |
| Patent application number | Title | Published |
|---|
| 20120128886 | NUCLEAR POWER PLANT, METHOD OF FORMING CORROSION-RESISTANT COATING THEREFOR, AND METHOD OF OPERATING NUCLEAR POWER PLANT - In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor. | 05-24-2012 |
| 20120128111 | NUCLEAR POWER PLANT, METHOD OF FORMING CORROSION-RESISTANT COATING THEREFOR, AND METHOD OF OPERATING NUCLEAR POWER PLAN - In a nuclear power plant, a corrosion-resistant oxide film on a surface of the metal component of a reactor structure is exposed to a high-temperature water, the corrosion-resistant oxide film containing an oxide having a property of a P-type semiconductor, and a catalytic substance having a property of an N-type semiconductor is deposited on the oxide film. The oxide film maintains the property of the P-type semiconductor. | 05-24-2012 |
| 20110115469 | OPTICAL FIBER ELECTRIC CURRENT SENSOR, ELECTRIC CURRENT MEASUREMENT METHOD, AND FAULT ZONE DETECTION APPARATUS - An optical fiber electric current sensor includes a polarization-splitter ( | 05-19-2011 |
| 20100226469 | ATOMIC REACTOR WATER SUPPLY PIPING STRUCTURE AND ULTRASONIC FLOWMETER SYSTEM - A technology for accurately measuring with the use of an ultrasonic flowmeter the flow rate through a nuclear reactor water supply piping interposed between a nuclear reactor and a nuclear reactor water supply pump. In a reactor coolant cleaning system ( | 09-09-2010 |
| 20100007211 | CONTROL DEVICE AND CONTROL METHOD FOR POWER CONVERSION SYSTEM HAVING INSTANTANEOUS VOLTAGE DROP - SERVICE INTERRUPTION COUNTER-MEASURE FUNCTIONS - [Task] In a power conversion system, a variation in PCS alternating current voltage is suppressed during a change operation to a self-contained run according to an instantaneous voltage drop-service interruption. | 01-14-2010 |
| 20090315402 | AC-DC CONVERSION DEVICE - In order to provide an AC-DC conversion device which is capable of making a small-sized, inexpensive system even in a case of an instantaneous voltage reduction capacity compensation capacity >> a load leveling capacity. The conversion device is constituted by connecting a fast switch between the commercial power source and the load and by connecting a PCS including a power storage unit, an AC-DC converter, and a linking transformer between the fast switch and the load. A part of a capacity constituting the power storage unit is constituted by an NaS battery and most of the reminder of the capacity is constituted by electric double layer capacitors. | 12-24-2009 |
| 20090185900 | WIND-DRIVEN ELECTRICITY GENERATION DEVICE, METHOD OF CONTROLLING WIND-DRIVEN ELECTRICITY GENERATION DEVICE, AND COMPUTER PROGRAM - The present invention provides a wind power generation device capable of reducing collision of a flying object against a blade or bird strike. The wind power generation device includes a tower set up on the ground, a nacelle fixed to the tower, a plurality of blades rotatably fixed to the nacelle via a hub, an obstacle search device capable of detecting a flying object existing in front, on the windward side, and a blade angle controller to control the change in angle of the blade including a rotation stop position. The obstacle search device searches for the flying object continuously, and when the flying object is determined to be approaching based on the continuous searching, the blade angle controller controls to change the blades to the rotation stop position. | 07-23-2009 |
| 20090140195 | Gate valve - An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily. A gate valve installed in a transport line for transporting fluid containing particulate material at a coal gasification plant includes a valve box having an inlet portion and an outlet portion in which a channel constituting a part of the transport line is formed; a valve unit, provided between the inlet portion and the outlet portion, which extends in an opening-and-closing direction orthogonal to an axial direction of the channel, and which is movable in the opening-and-closing direction; a wedge plate provided between the valve unit and the inlet portion so as to extend in the opening-and-closing direction; and a guide plate provided between the valve unit and the outlet portion so as to extend in the opening-and-closing direction. Areas between the valve unit and the wedge plate and between and the valve unit and guide plate are sealed by means of surface contact. | 06-04-2009 |
| 20090071616 | METHOD OF UPGRADING BIOMASS, UPGRADED BIOMASS, BIOMASS WATER SLURRY AND METHOD OF PRODUCING SAME, UPGRADED BIOMASS GAS, AND METHOD OF GASIFYING BIOMASS - This method of upgrading a biomass comprises: an upgrading step for performing upgrading treatment of a cellulose based biomass with an oxygen/carbon atomic ratio of at least 0.5, in presence of water and under a pressure of at least saturated water vapor pressure, and reducing said oxygen/carbon atomic ratio of said biomass to no more than 0.38, and a separation step for separating an upgraded reactant obtained from said upgrading step into a solid component and a liquid component. | 03-19-2009 |
| 20090056415 | METHOD OF MEASURING HYDROGEN CONCENTRATION IN MEMBER AND DEVICE OF MEASURING HYDROGEN CONCENTRATION - An art of hydrogen concentration measurement in which the hydrogen concentration of any given location of an object to be measured can be nondestructively obtained is provided. | 03-05-2009 |
| 20080307704 | Coal gasification plant and method for operating the same - It is an object to solve a bypass line corrosion problem effectively, enable prompt supply of a fuel gas into a bypass line in the event of an emergency, and provide an inexpensive coal gasification plant. An integrated coal gasification combined cycle power generation plant includes a coal gasification furnace, a dust remover, a gas refiner, a gas turbine and the like, a main system line connecting therebetween, and a bypass line connecting between the outlet side of the coal gasification furnace in the main system line and a flare stack, wherein a dust remover bypass valve which is disposed in an upstream portion of the bypass line and which opens and closes the bypass line, a treatment gas control valve which is disposed in a downstream portion of the bypass line and which controls the flow rate, and a first inert gas input line which is disposed downstream from the dust remover bypass valve and which supplies the inert gas to the bypass line are provided. | 12-18-2008 |
| 20080243391 | Information Managing/Providing System and Method - There is provided n information managing/providing system including a plurality of clients ( | 10-02-2008 |
| 20080236139 | Power generation system - To provide a power generation system that prevents a reduction in the efficiency of a steam turbine due to an aperture adjustment of a turbine governing valve. There is provided a power generation system comprising: a furnace in which a solid fuel or a liquid fuel is combusted; a steam turbine that generates electric power by rotating a turbine rotor using steam generated by the furnace; a superheater that is provided between the furnace and the steam turbine and that superheats the steam; a first steam piping that connects the furnace to the superheater; a second steam piping that connects the superheater to the steam turbine; a first valve provided in the first steam piping; a turbine governing valve provided in the second steam piping; and a control section that adjusts an aperture of the first valve according to a load of the steam turbine. | 10-02-2008 |
| 20080218000 | Power-Off System and Method - There is provided a power-off system including a connector ( | 09-11-2008 |
