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    • 85. 发明专利
    • WATER SUPPLY CONTROLLER
    • JPH06123797A
    • 1994-05-06
    • JP27389492
    • 1992-10-13
    • TOSHIBA ENGINEERING COTOSHIBA CORP
    • YAMADA MINORUTSUKIJI YOSHIHIRONISHIYAMA HIROYUKI
    • G21D3/04G21D3/08
    • PURPOSE:To provide a water supply controller for a water supply system capable of automatically changing a reactor water level set point in case of selective control rod operation and avoiding a turbine trip and a reactor scram. CONSTITUTION:In a water supply controller 26 which controls a reactor water level by controlling reactor water supply flowrate basing on the water supply flowrate command signal output by a main controller 34 in which a water level control signal calculated from the deviations between reactor water level and a water level set value set with a water level setter 27 and between main steam flowrate and reactor water supply flowrate are input, a selective water level setter 28 set lower than the set value by the water level setter 27, a switching element 29 for switching the water level set signal from the water level setter 27 to the water level set signal of the selective water level setter 28, a water level setting changer 30 for outputting a water level change signal for switching the switching element by the insertion operation of control rods selected in advance, are provided.
    • 86. 发明专利
    • HEAT EXCHANGER
    • JPH05141891A
    • 1993-06-08
    • JP30508491
    • 1991-11-20
    • TOSHIBA CORP
    • YAMADA MINORUNEMOTO AKIRA
    • F28F9/00F22B37/40F28F19/00
    • PURPOSE:To effectively prevent resonance of a plurality of tube groups in a heat exchanger having a plurality of heat transfer tubes. CONSTITUTION:A heat exchanger has a plurality of heat transfer tube groups 21a, 21b each having heat transfer tubes perpendicular to a gas flowing direction in a gas passage duct and a resonance preventive baffle plate 22 for preventing resonance of a plurality of tube groups in each group in such a manner that an interval of spaces between the adjacent groups in a gas flowing direction is eight times or less as deep as the group of at an upstream side. The plate 22 is extended at the group of the upstream side to both upstream and downstream side by at least twice or more as large as a pitch of the tubes in the gas flowing direction from the center of the tube at the lowermost downstream side. The plate 22 is extended at the group of the downstream side to the upstream side by at least twice or more as large as a pitch of the tubes in the gas flowing direction from the center of the tube of the lowermost downstream side of the group.
    • 87. 发明专利
    • WASTE HEAT RECOVERY HEAT EXCHANGER
    • JPH04161702A
    • 1992-06-05
    • JP21590590
    • 1990-08-17
    • TOSHIBA CORP
    • YAMADA MINORUOZEKI TOSHIAKI
    • F22B1/18F22B37/00F22B37/48
    • PURPOSE:To prevent obstruction to heat transfer performance and an output drop of a gas turbine by providing a water injection grid for removing ammonium sulfate which is attached to a group of heat exchanger tubes, in a region where an exhaust gas temperature is in a specific range. CONSTITUTION:Exhaust gas 5 from a gas turbine for which fuel containing sulfur is used passes in order through a high-pressure superheater 9, a high- pressure evaporator 7, a high-pressure economizer 6, a low-pressure evaporator 4, and a low-pressure economizer 2 arranged in a waster heat recovery heat exchanger 1 and is discharged from a smoke stack 10. In this case, the low- pressure economizer 2 is divided into two sections, and a water injection grid 16 is provided in a space opened by division i.e., in a region where an exhaust gas temperature is 150-300 deg.C. When water is regularly injected, ammonium sulfate attached to a group of heat exchanger tubes can be easily removed. Accordingly, it becomes possible to avoid corrosion of the heat transfer tubes, obstruction to heat transfer performance, and an output drop of the gas turbine caused by an increase in a draft loss.
    • 88. 发明专利
    • PREVENTIVE DEVICE FOR OVERFLOW IN WATER SUPPLY
    • JPH0367078A
    • 1991-03-22
    • JP20245089
    • 1989-08-04
    • TOSHIBA CORPTOSHIBA ENGINEERING CO
    • NISHIYAMA HIROYUKIYAMADA MINORU
    • F04B49/06F22D5/26F22D5/32
    • PURPOSE:To suppress variation of the water level by entering pressure signals on the inlet and outlet sides of a flow adjusting valve, connecting or disconnecting a correction signal formed from the difference between the two according to the operating condition of a motor-driven water supply pump, and thereby controlling the degree of opening of the flow adjusting valve properly. CONSTITUTION:Even though a motor-driven water supply pump 2 is started in the condition that a flow adjusting valve 4 is opened fully, the pressures of service water on the inlet and outlet sides of this flow adjusting valve 4 before and after starting are sensed by pressure sensors 8a, 8b, and the pressure difference is compared in a pressure correction circuit 9, which emits a correction signal, and an interlock circuit 10 judges that the pump 2 is in starting process, and upon conforming that this condition is established, the correction signal is transmitted to a water level controller 6. The water level controller 6 changes the gain with this correction signal, and reduce the degree of opening of the flow adjusting valve 4 to control the rate of water flow to a specified value. That is, control of the rate of flow is made by closing adjustment of the valve 4 in compliance with increase in the rate of flow made by starting of the pump 2.
    • 89. 发明专利
    • FILM FORMING DEVICE
    • JPH02209473A
    • 1990-08-20
    • JP3133389
    • 1989-02-10
    • TOSHIBA CORP
    • NAKAMURA SUGURUSASAKI MITSUOKINOSHITA JUNICHIYAMADA MINORUMURASE AKIRA
    • C23C14/28
    • PURPOSE:To form a film having a good adhesive property at a high film forming speed by providing a container for housing a material to be deposited by evaporation, a holder member for a substrate, a laser light irradiating means, a gas injecting means and an ion forming and accelerating means in a vacuum chamber. CONSTITUTION:Gas, such as N2, is injected from a cylinder 17 toward the inside surface of a window 14 for transmission of laser light 24 from the ejection hole on the inner peripheral surface of an annular gas ejecting member 15 and a glow discharge is generated between an electrode 19 and the holder member 3 to ionize the gas supplied into a vacuum chamber 1. The powdery material 23 to be deposited by evaporation in the container 4 is irradiated with the laser light 24 through the transmission window 14 to melt and evaporate the mateiral. The gas of the material 23 is sucked and deposited on the substrate 22 on the holder member 3 by the voltage gradient between the holder member 3 and the electrode 19. by which the film is formed. The gaseous N2 or the like is injected from the above-mentioned member 15 to the inside surface of the window 14, by which the deposition of the material 23 on the inside surface of the window 14 is suppressed and the deposition rate of the material 23 on the substrate 22 is maintained in a high state over a long period of time.
    • 90. 发明专利
    • COMPOUND SUPERCONDUCTIVE MATERIAL AND MANUFACTURE THEREOF
    • JPH02201819A
    • 1990-08-10
    • JP2146489
    • 1989-01-31
    • TOSHIBA CORP
    • YAMAMOTO KAZUOYAMADA MINORUMURASE AKIRA
    • C04B41/90C01G1/00H01B12/06H01B13/00H01L39/24
    • PURPOSE:To improve the strength of attachment of oxide superconductive material to a coating material, substrate material, etc., and improve the mechanical strength by forming a layer of oxide superconductive layer through a middle reaction layer on a base body of platinum or platinum alloy. CONSTITUTION:An oxide superconductive material is heated up to over its fusing point to be fused, and the molten matter is applied on a layer of platinum or platinum alloy of a base body 1. Or otherwise the powders of the oxide superconductive material are applied on the layer of platinum or platinum alloy of the base body and then heated up to the fusing point of the oxide superconductive material to be fused. For applying the heated and fused oxide superconductive material, the base body is immersed in the fused material, or the fused material is applied through a nozzle provided in a lower part of a heat crucible. The oxide superconductive material over the fusing point on the layer of platinum or platinum alloy reacts with platinum and forms a middle reaction layer 3 which is dense and strongly connected with the base body. By then hardening the molten matter of the oxide superconductive material to crystallize it, a layer 2 of the oxide superconductive material is formed.