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1. 发明专利

JPS6238247A METHOD FOR REGENERATING ION EXCHANGE RESIN 失效
公开(公告)号：JPS6238247A
公开(公告)日：1987-02-19
申请号：JP17587685
申请日：1985-08-12
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： OSUMI KATSUMI , MIZUNIWA FUMIO , SHINDO KIICHI , AKAMINE KAZUHIKO , AIZAWA MOTOHIRO
IPC分类号： C02F1/42 , B01J49/00 , G21F9/00 , G21F9/12
摘要： PURPOSE:To reduce the amount of regenerating chemicals and to prolong the life of an ion exchange resin, by regenerating a chelate agent forming a complex along with the metal ion adsorbed by the ion exchange resin by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the metal ion. CONSTITUTION:The chelate agent forming a complex along with the main metal ion adsorbed by an ion exchange resin is regenerated by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the aforementioned metal ion. For example, when the cation exchange resin of a condensation desalting device of a boiling water atomic power plant is regenerated, the amount of the chelate agent contained in the regenerated solution is set to one equal to or more than a mol number necessary for forming a neutral or negative complex along with the metal contained in said ion exchange resin to perform regeneration. The amount of the regenerating solution is suitably adjusted to 1/4-1/2 the amount of the ion exchange resin. Further, it is suitable to perform regeneration by stirring the ion exchange resin and the regenerating solution by air bubbles.

2. 发明专利

JPH1123788A BOILING WATER REACTOR POWER PLANT 失效
公开(公告)号：JPH1123788A
公开(公告)日：1999-01-29
申请号：JP18124597
申请日：1997-07-07
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA ENG KK
发明人： NAKAMURA MASAHITO , SASAKI HIROSHI , YAMAGUCHI HIDEKI , ICHIMURA AKIRA , AKAMINE KAZUHIKO
IPC分类号： G21D3/08 , G21F9/02
摘要： PROBLEM TO BE SOLVED: To enable safe operating of a boiling water reactor power plant by reducing hydrogen concentration in an off-gas system even when an unbalance takes place between hydrogen gas and oxygen gas caused by pressure fluctuation during back wash of the main condenser in injecting hydrogen. SOLUTION: In this reactor power plant, steam flowing from the reactor 1 via a high pressure turbine 2 and a low pressure turbine 3 in the main steam line 14 is condensed in the main condenser 4. The condensed water is returned via a water supply system 16 to the reactor 1. Non-condensible gases of hydrogen and oxygen flowing out of the main condenser 4 is discharged into the air via a recombiner 11 of an off-gas system 15 and a hydrogen gas injector 17 and an oxygen gas injector injecting oxygen in the non-condensible gas are provided in the water supply system 16. In this case, oxygen gas/hydrogen gas in the off-gas system is made excess in-oxygen in the stoichiometric ratio by connecting an oxygen injection device 18 to the main condenser 4.

3. 发明专利

JPS5892438A ELECTROMAGNETIC FILTER 失效
公开(公告)号：JPS5892438A
公开(公告)日：1983-06-01
申请号：JP18917381
申请日：1981-11-27
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMAMOTO MICHIYOSHI , AIZAWA MOTOHIRO , MITANI SHINJI , AKAMINE KAZUHIKO
IPC分类号： B01D35/06 , B03C1/025 , G21C19/30 , G21C19/307
摘要： PURPOSE:To attain to prevent the leakage of a filter element, by inserting a wedge wire element between a filter element at a condensed water outflow side and a support grid. CONSTITUTION:In a wedge wire element 18 provided between a filter element 13 and a support grid 14 in the downstream side of said filter element 13, at least a distance (d) between wedge wires 19 is adjusted to about 30-50mum because the diameter of the filter element is about 30-50mum. In addition, when the fine wire diameter of the filter element is 8-350mum in a ribbon form, the slit width of the wedge wire element 18 secures at least 8-350mum to prevent the outflow of the filter element perfectly.

4. 发明专利

JPS6189592A Device for removing organic matter 失效
标题翻译：移除有机物的装置
公开(公告)号：JPS6189592A
公开(公告)日：1986-05-07
申请号：JP20972984
申请日：1984-10-08
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： FUKUMOTO TOSHIHIKO , OSUMI KATSUMI , USUI NAOSHI , AKAMINE KAZUHIKO
IPC分类号： G21F9/06

5. 发明专利

JP2004045114A Method for relaxing stress corrosion cracking on in-reactor structure in nuclear power plant 审中-公开
公开(公告)号：JP2004045114A
公开(公告)日：2004-02-12
申请号：JP2002200728
申请日：2002-07-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , WADA YOICHI , UETAKE NAOTO , AKAMINE KAZUHIKO , NAKAMURA MASAHITO
IPC分类号： G21C19/307 , C23F14/02 , G21D1/00 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To decrease the usage of elements of the platinum family in the technology for the improvement in the hydrogen pouring effect for relaxing stress corrosion cracking by allowing the elements of the platinum family to adhere to the surface of an in-reactor structure.
SOLUTION: When an ionic solution of the elements of the platinum family or an ionic solution of a compound containing the elements of the platinum family is poured into reactor water in a nuclear reactor, ions of base metallic elements or ions of a compound of base metallic elements which increase or decrease the adhesion speed of the elements of the platinum family are poured. The period for adhesion treatment can be shortened by increasing the adhesion speed of the elements of the platinum family. Moreover, the pour of the elements of the platinum family can be decreased.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2003004887A CORROSION POTENTIAL SENSOR, BOILING WATER REACTOR POWER PLANT AND pH SENSOR 审中-公开
标题翻译：腐蚀潜在传感器，锅炉水反应堆发电厂和pH传感器
公开(公告)号：JP2003004887A
公开(公告)日：2003-01-08
申请号：JP2001187955
申请日：2001-06-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE RYUJI , SAKAI MASANORI , TAKAHASHI TAKUYA , AKAMINE KAZUHIKO
IPC分类号： G21C17/02 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a corrosion potential sensor provided with a structure densely filling a specific amount of oxide powder in a limited space and capable of a long term use and a boiling water reactor power plant.
SOLUTION: The corrosion potential sensor has a sensor box which is made by connecting a cylindrical metal body 5 to the open end of a zirconia cylinder 1 closed at the one end by way of an intermediate metal cylinder 6 for connection and has a structure that metal powder 3 for power collection and metal oxide powder 2 for electrochemical system consisting of a compact are sealed in the zirconia cylinder 1 and a potential detection lead conductor 4 is arranged for short-circuiting the metal powder 3 for power collection to detect the potential by a mineral-insulated cable 7 by way of the lead conductor 4. The packing density of silver oxide rises to 2 to 3.5 times compared with conventional natural packing method, which prevents the zirconia tube inside from silver oxide depletion, maintains oxygen partial pressure constant for a long period and makes to obtain a corrosion potential sensor capable of long term use.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种腐蚀电位传感器，该腐蚀电位传感器具有在有限空间中能够长期使用的特定量的氧化物粉末和沸水反应堆发电厂的结构。解决方案：腐蚀电位传感器具有传感器盒，该传感器盒通过将圆柱形金属体5连接到通过用于连接的中间金属圆筒6在一端封闭的氧化锆气缸1的开口端而制成，并且具有金属用于集电的粉末3和由紧凑件组成的电化学系统的金属氧化物粉末2密封在氧化锆圆筒1中，并且设置潜在的检测引线导体4，用于短路用于集电的金属粉末3以通过矿物绝缘电缆7通过引线导体4.氧化银的填充密度比传统的天然填充方法上升2至3.5倍，这防止氧化锆管内部氧化银消耗，维持氧分压恒定使得获得能够长期使用的腐蚀电位传感器。

7. 发明专利

JPH11295480A METHOD FOR FORMING CATALYST SURFACE 失效
公开(公告)号：JPH11295480A
公开(公告)日：1999-10-29
申请号：JP10082598
申请日：1998-04-13
申请人： HITACHI LTD
发明人： WADA YOICHI , UETAKE NAOTO , TACHIBANA MASAHIKO , AKAMINE KAZUHIKO
IPC分类号： G21D1/00
摘要： PROBLEM TO BE SOLVED: To limit an execution point and at the same time control the amount of injection of a catalyst, by allowing a catalyst element to adhere while the temperature of reactor cooling water is at a temperature where it cannot be boiled under atmospheric pressure and a surface density is at a specific value. SOLUTION: After a pressure container 3 is released on periodical inspection, a reactor water level 10 is controlled according to the region of a structure for gluing a catalyst in the pressure container 3. While a fuel 5 is loaded, the reactor water level 10 cannot be decreased since radiation needs to be shielded, thus setting the fully high reactor water level 10 and gluing a catalyst to the structure of the large part of the inside of the pressure container 3. By directly pouring a compound containing a catalyst element into reactor water in the pressure container 3 via an injection line 2, the catalyst is glued to the entire surface of the pressure container 3, a shroud 4, a shroud support 6, a pressure container bottom part 7, a reactor core support plate 8, and an upper lattice plate 9 so that the surface density reaches 0.5 μg/cm or higher.

8. 发明专利

JPH10232293A BOILING WATER ATOMIC POWER PLANT 失效
公开(公告)号：JPH10232293A
公开(公告)日：1998-09-02
申请号：JP3602197
申请日：1997-02-20
申请人： HITACHI LTD
发明人： NAKAMURA MASAHITO , AKAMINE KAZUHIKO
IPC分类号： G21C19/307 , G21D3/00
摘要： PROBLEM TO BE SOLVED: To simplify a facility of an entire plant including a radioactive waste disposal facility by simplifying a facility of a condensate purifying system and to further reduce a generated amount of radioactive waste. SOLUTION: Vapor generated in a nuclear reactor is worked in a turbine 2, then condensed by a condenser 3 of a condensate purifying system, and guided to a feed water system via a low pressure condensate pump 4, condenser filter 5 and a high pressure condensate pump 6. That is, a condensate desalting unit is omitted. Insoluble impurities such as iron clad in the condensate are removed by the filter 5. A coolant purifying system 12 of the reactor is guided from a recirculating system 13 of the reactor, and guided to the reactor via a regenerative heat exchanger 9, non-regenerative heat exchanger 10, filter desalting unit 11 and the exchanger 9. The soluble impurities (ion components) and insoluble impurities in water of the reactor are removed by the unit 11.

9. 发明专利

JPH09222495A HYDROGEN INJECTION SYSTEM 失效
公开(公告)号：JPH09222495A
公开(公告)日：1997-08-26
申请号：JP2895796
申请日：1996-02-16
申请人： HITACHI LTD
发明人： NAKAMURA MASAHITO , AKAMINE KAZUHIKO , ASAKURA YAMATO , OSUMI KATSUMI , IBE HIDEFUMI , ONAKA NORIYUKI
IPC分类号： G21D1/00 , G21D3/08
摘要： PROBLEM TO BE SOLVED: To reduce the velocity of crack propagation in reactor bottom material by controlling the hydrogen concentration in a water supply system so that corrosion potential and dose rate in the main steam line are kept within specific ranges. SOLUTION: The measurement of corrosion potential at a reactor bottom is done with a corrosion potential electrode 11a and monitoring is done with a data acquisition device 11b. When the corrosion potential is less than -0.1V, the opening of a valve 30 is reduced to reduce the injection rate of hydrogen from a hydrogen injection system 54 into water supply systems. On the contrary, when the corrosion potential is -0.1V or higher and 0.1 V or lower, the opening of the valve 30 is maintained. When the corrosion potential is larger than 0.1V, the opening of the valve 30 is increased to increase the hydrogen injection rate from the system 54 to the water supply system 54. By the above operation, the hydrogen injection rate is properly controlled so that the corrosion potential at the reactor bottom material is to be between -0.1V and 0.1V.

10. 发明专利

JPH0468525B2 失效
公开(公告)号：JPH0468525B2
公开(公告)日：1992-11-02
申请号：JP22495284
申请日：1984-10-25
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , OOSUMI KATSUMI , ITO HISAO , KOBAYASHI MASATO
IPC分类号： F22B1/16 , F22B37/00 , F22D11/00 , G21D1/00

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