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61. 发明专利

JPS61105002A Boiling water type nuclear power plant 失效
公开(公告)号：JPS61105002A
公开(公告)日：1986-05-23
申请号：JP22495284
申请日：1984-10-25
申请人： Hitachi Ltd
发明人： AKAMINE KAZUHIKO , OSUMI KATSUMI , ITO HISAO , KOBAYASHI MASATO
IPC分类号： F22B1/16 , F22B37/00 , F22D11/00 , G21D1/00
CPC分类号： Y02E30/40

62. 发明专利

JPS5965799A Method of operating reactor clean-up system 失效
标题翻译：操作反应器清洁系统的方法
公开(公告)号：JPS5965799A
公开(公告)日：1984-04-14
申请号：JP17622582
申请日：1982-10-08
申请人： Hitachi Ltd
发明人： AKAMINE KAZUHIKO , OOSUMI KATSUMI , YAMAMOTO MICHIYOSHI
IPC分类号： G21C19/307 , G21C19/30

63. 发明专利

JPS58216712A System for detecting disconnection of electric source in electromagnetic filter 失效
标题翻译：用于检测电磁滤波器中电源断开的系统
公开(公告)号：JPS58216712A
公开(公告)日：1983-12-16
申请号：JP9930482
申请日：1982-06-11
申请人： Hitachi Ltd
发明人： AKAMINE KAZUHIKO , YAMAMOTO MICHIYOSHI , OOSUMI KATSUMI , SAITOU TATSUYA
IPC分类号： B01D35/06 , B03C1/025 , G21C19/30 , G21C19/307
摘要： PURPOSE: To prevent the outflow of a large amount of crud to the treated-water side when an electric source of an electromagnetic coil for an electromagnetic filter is disconnected.
CONSTITUTION: In normal operation, water to be treated is flowed into an electromagnetic filter 1 and is then flowed into a matrix 3 excited by an electromagnetic coil 2, and the crud incorporating in the water is removed. When an electric source of the coil 2 is disconnected, the crud captured in the matrix 3 is captured by a strainer 6. A differential pressure gauge 7 is provided to the strainer 6. A signal is transmitted at the time when the collected crud is attained a prescribed value (about 0.2W1.5kgf/cm
2 ) to close automatic valves 8 placed at the inlet and outlet sides of the filter 1 and to open an automatic valve 10 of a pass line 9. Thus, the outflow of a large amount of the crud is prevented. Even in case when the electric source of the coil 2 of the filter 1 is disconnected, the device is securely separated from the system.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：为了防止当电磁滤波器的电磁线圈的电源断开时向处理水侧流出大量的原油。构成：在正常操作中，待处理的水流入电磁过滤器1，然后流入由电磁线圈2激发的矩阵3中，并且除去装入水中的粗屑。当线圈2的电源断开时，通过过滤器6捕获矩阵3中捕获的碎屑。向过滤器6提供差压计7.在收集到的粗碎屑时，发送信号规定值（约0.2-1.5kgf / cm 2），以关闭放置在过滤器1的入口侧和出口侧的自动阀8，并打开通行线9的自动阀10.因此，防止了大量的原油。即使在过滤器1的线圈2的电源断开的情况下，该装置与系统牢固地分离。

64. 发明专利

JPS58125000A REVERSE CLEANING SYSTEM OF ELECTROMAGNETIC FILTER 失效
公开(公告)号：JPS58125000A
公开(公告)日：1983-07-25
申请号：JP765482
申请日：1982-01-22
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , YAMAMOTO MICHIYOSHI , OOSUMI KATSUMI , SAITOU TATSUYA , HONDA TAKU
IPC分类号： B01D35/06 , B03C1/032 , G21C19/30 , G21C19/307 , G21F9/00 , G21F9/06 , G21F9/12

65. 发明专利

JPS57139288A HOT WELL OF MAIN CONDENSER 失效
公开(公告)号：JPS57139288A
公开(公告)日：1982-08-28
申请号：JP2432281
申请日：1981-02-23
申请人： HITACHI LTD
发明人： AKAMINE KAZUHIKO , YAMAMOTO MICHIYOSHI , MITANI SHINJI , TAKASHIMA YOSHIE
IPC分类号： F28B9/08 , F28B11/00
摘要： PURPOSE:To save the consumption of oxygen and to prevent the hot well from corrosion by a method wherein in the device of the title hot well of the main condenser used in a boiling type small-sized atomic power plant, a zigzag waterway in the hot well is covered with a covering member provided with a condensed water passage, oxygen injection nozzles are arranged in the hot well and the amount of injection of oxygen is so adjusted that a desired density of oxygen dissolved in the hot well is obtained. CONSTITUTION:When oxygen is injected into the hot well 5 through the oxygen injecting nozzles 18a and 18b, most of the injected oxygen is absorbed in the condensed water in the hot well as it floats in the water and an unabsorbed part of the oxygen floating on the surface 19 of the condensed water stands in a closed vessel formed of a baffle plate 6 and a partition plate 20 to be finally absorbed in the water from the surface 19. In this case, the amount of oxygen dissolved in the condensed water is measured by a dissolved oxygen meter 23, the measured value is inputted to a DO adjuster 22 and the amount of oxygen to be injected into the hot well is so controled by an adjust valve 24 that the density of the dissolved oxygen becomes approximately in the order of 20- 4,000PPb which is suitable for preventing the hot well system from corrosion. Thus, with the above structure, it is possible to save the consumption of oxygen and to maintain the hot well in an optimum anticorrosive condition to thereby prevent the hot well from corrosion.

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