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1. 发明专利

JPH09274099A NUCLEAR POWER PLANT AND METHOD FOR OPERATING THE SAME 失效
公开(公告)号：JPH09274099A
公开(公告)日：1997-10-21
申请号：JP8503496
申请日：1996-04-08
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI ENG SERVICE
发明人： YAMANE KOICHI , ASAKURA YAMATO , KAZAMA SEIICHI , KAKUI NAOSHI , NISHIMURA YUSAKU , MIKI MINORU , MIKI KAZUYOSHI
IPC分类号： G21C19/307 , G21D3/08 , G21F9/12
摘要： PROBLEM TO BE SOLVED: To reduce costs by saving a condensate filter while possessing a function of lowering the concentration of insoluble impurities by making good use of the short-life and high iron-eliminating performance of ion exchange resin and a low TOC elution rate, by filling the inside of a condensate desalina tion tower with more than one type of ion exchange resin which varies in iron-eliminating performance. SOLUTION: The steam generated on the surface of a fuel in a reactor 2 works in a turbine system 4 and then coheres in a condenser 5 to come into liquefaction again. The liquid at this point contains insoluble impurities composed mainly of the iron generated in the turbine system 4, a trace of chlorine ions which have got mixed in a condensate system during the heat exchange with the seawater and a trace of other metals. Afterward, this liquid, whose pressure is heightened by a condensate pump 11, flows into a condensate desalination filter consisting of two systems. One is a desalination tower group A including ion exchange resin with a low iron-eliminating rate, and the other is a desalination tower group B including that with a high iron-eliminating rate.

2. 发明专利

JPH026796A DIRECT CYCLE TYPE NUCLEAR POWER PLANT AND ITS OPERATING METHOD AND FUEL ROD 失效
公开(公告)号：JPH026796A
公开(公告)日：1990-01-10
申请号：JP15476788
申请日：1988-06-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： IBE HIDEFUMI , ASAKURA YAMATO , NAGASE MAKOTO , KARASAWA HIDETOSHI , SAKAGAMI MASAHARU , UTAMURA MOTOAKI , KAWAMURA FUMIO , UCHIDA SHUNSUKE , MIKI MINORU , OSUMI KATSUMI , CHIBA YOSHINORI
IPC分类号： G21C19/307 , G21C3/06 , G21C19/30 , G21D1/00 , G21D1/02 , G21D3/08
摘要： PURPOSE:To suppress the carry-over to a main steam system and a turbine system from a nuclear reactor of N, to reduce the dosage rate and to relax the corrosion of a material by providing a hydrogen radical capturing agent injecting means and a hydrogen radical generating agent injecting means. CONSTITUTION:The title plant is provided with a means for injecting a hydrogen radical capturing agent having an action for lowering the hydrogen atomic concentration by responding to a hydrogen atom in furnace water of a nuclear reactor and a means for injecting a hydrogen radical generating agent for reducing and eliminating a surplus hydrogen radical capturing agent in the furnace water, in order to convert a radioactive nitrogen oxide in the furnace water of the nuclear reactor to an anion. Also, at the time of injecting the hydrogen radical capturing agent to the furnace water, it is unnecessary to inject it directly to water in the nuclear reactor, and it can also be injected from a feed water 7 or condensate system 42. Subsequently, by injecting the hydrogen radical generating agent and increasing the hydrogen atomic concentration, a nitric acid ion and a nitrous acid ion are reduced to NO, so that the nitric acid concentration is reduced in an early stage, the hydrogen atomic concentration is controlled, and while suppressing the impact to the corrosion environment in the furnace, N is reduced effectively.

3. 发明专利

JPH01250893A NATURAL CIRCULATION BOILING LIGHT WATER REACTOR 失效
公开(公告)号：JPH01250893A
公开(公告)日：1989-10-05
申请号：JP7909388
申请日：1988-03-31
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SHINNO TAKESHI , NAKAYAMA TADAKAZU , TSURUOKA RYOZO , MIKI MINORU , IWATA NOBUISA , KOYAMA KAZUTO
IPC分类号： G21C1/08 , G21C15/02 , G21C15/12 , G21C15/16 , G21C15/26
摘要： PURPOSE:To contrive the reduction in weight, etc., of a shielding structural body for a turbine system, etc., by providing a chimney which is connected at one end to a shroud, extends in a steam/water chamber toward a steam chamber and is opened at the other end toward a steam dryer. CONSTITUTION:A reactor core 2 is disposed in the steam/water chamber of a pressure vessel 1 and the core shroud 3 encloses the core 2. The tubular chimney 4 extends in the steam/water chamber from the top end of the shroud 3 toward the steam chamber and a coolant is filled in this chimney 4. The inside diameter of the chimney 4 is larger than the outside diameter of the shroud 3 and the end part 41 of the chimney 4 is opened toward the steam dryer 5. The dryer 5 which communicates the steam/water chamber of the pressure vessel 1 and the steam chamber is provided to the upper part of the chimney 4. The dryer 5 is mounted on a circumferential projection 13 which projects radially inward from the wall of the pressure vessel 1. A steam guide 6 is provided to the outlet of the dryer 5. This guide 6 extends upward in the steam chamber and a steam outlet 7 is provided to the wall of the pressure vessel 1 corresponding to the steam chamber.

4. 发明专利

JPS5769289A Nuclear reactor 失效
公开(公告)号：JPS5769289A
公开(公告)日：1982-04-27
申请号：JP14432480
申请日：1980-10-17
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： SUGIZAKI TOSHIHIKO , MIKI MINORU , MIURA SATOSHI
IPC分类号： G21C15/18
CPC分类号： Y02E30/40

5. 发明专利

JPS6491089A CONTAINMENT VESSEL 失效
公开(公告)号：JPS6491089A
公开(公告)日：1989-04-10
申请号：JP24785787
申请日：1987-10-02
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TOMINAGA KENJI , MIKI MINORU , TAKAHASHI TORU
IPC分类号： G21C13/00 , G21C9/00 , G21C9/004
摘要： PURPOSE:To achieve a higher proper safety with an increase in natural heat radiation, by providing an intermediate dry well space arranged on a wall of a containment vessel and a horizontal circumference of a suppression chamber as communicating with a dry well. CONSTITUTION:A containment vessel 2 has an intermediate pool linked to a circumferential pool filled with water between a suppression chamber 4 and a dry well 3 space as set with one side thereof in contact with the suppression chamber 4 and the other in contact with the dry well space. In this case, if an accident of losing a coolant should happen, a high temperature/high pressure steam is released to the dry well 3 from a pressure vessel 1 and further into water of the suppression pool 5 passing through a vent 6. The steam causes the water of the suppression pool 5 to be condensed completely to suppress an excessive rise in the pressure within the containment vessel 2. A core decay heat distributed to a space section of the suppression chamber 4 and the water of the suppression pool 5 is radiated naturally to the circumferential pool 11 through the wall of the containment vessel 2.

6. 发明专利

JPS63217296A NATURAL RADIATION TYPE REACTOR CONTAINER 失效
公开(公告)号：JPS63217296A
公开(公告)日：1988-09-09
申请号：JP5008987
申请日：1987-03-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TOMINAGA KENJI , MIKI MINORU , TAKAHASHI TORU , HORIUCHI TETSUO
IPC分类号： G21C13/00 , G21C9/004

7. 发明专利

JPS6189587A Bottom structure of container for nuclear reactor 失效
标题翻译：核反应堆容器底部结构
公开(公告)号：JPS6189587A
公开(公告)日：1986-05-07
申请号：JP21178884
申请日：1984-10-09
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： MIKI MINORU , OYAMADA OSAMU , FURUKAWA HIDEYASU , UOZUMI HIROTO , SATOU TOMOJIROU
IPC分类号： G21C13/00
CPC分类号： Y02E30/40

8. 发明专利

JPS55135799A RADIOACTIVE WASTE PROCESSING DEVICE 失效
公开(公告)号：JPS55135799A
公开(公告)日：1980-10-22
申请号：JP4308879
申请日：1979-04-11
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： HORIUCHI SUSUMU , MIKI MINORU , HAYASHI TATSUO , KOBAYASHI TOSHIBUMI
IPC分类号： G21F9/30 , B01J19/00 , B09B5/00 , G21F9/00 , G21F9/04 , G21F9/06 , G21F9/28 , G21F9/36

9. 发明专利

JPH01245808A MODULE STRUCTURE OF HOLLOW YARN MEMBRANE AND ITS OPERATION 失效
公开(公告)号：JPH01245808A
公开(公告)日：1989-10-02
申请号：JP7213888
申请日：1988-03-28
申请人： HITACHI LTD
发明人： UTAMURA MOTOAKI , NAGASE MAKOTO , ASAKURA YAMATO , UCHIDA SHUNSUKE , OSUMI KATSUMI , MIKI MINORU , ADACHI TETSURO
IPC分类号： B01D61/14 , B01D61/18 , B01D61/20 , B01D61/22 , B01D63/04 , B01D65/02
摘要： PURPOSE:To achieve maximum water permeating function per unit pressure difference by determining the length and inner diameter of a hollow yarn according to an index of dimensionless parameter delta=(128gamma/D ) .L in an external pressure-type module comprised of bundled hollow yarn membranes. CONSTITUTION:The length and inner diameter of a hollow yarn are determined according to an index of dimensionless parameter delta=(128gamma/D ) .L in an external pressure-type module comprised of bundled hollow yarn membranes wherein D is hollow yarn membrane inner diameter (m); L is the length of the hollow yarn membrane (m) and in the case of a both end water collecting-type, a half of the length; gamma is a coefficient of water permeability (m) and gamma=muv/(P2-P), muis coefficient of viscosity of a permeating soln. (Pa.S); v is a linear flow rate in permeating the membrane and P2-P is external pressure difference (Pa). As a result, the maximum water permeating function per unit pressure difference is achieved and also water processing amount of the hollow yarn module becomes maximum, and the operation period up to reverse washing under a condition of fixed water flow amount can be selected at maximum.

10. 发明专利

JPS6048000B2 JPS6048000B2 - 失效
公开(公告)号：JPS6048000B2
公开(公告)日：1985-10-24
申请号：JP420278
申请日：1978-01-20
申请人： Hitachi Ltd
发明人： SUEMATSU SHIGERU , OOSUMI KATSUMI , MIKI MINORU , TANNO KAZUO , TSUCHA TOYOHIKO
IPC分类号： G21D1/00 , G21C7/00 , G21C15/00 , G21D3/08
CPC分类号： Y02E30/39

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