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1. 发明专利

JPS59127616A Electromagnetic filter 失效
标题翻译：电磁过滤器
公开(公告)号：JPS59127616A
公开(公告)日：1984-07-23
申请号：JP109383
申请日：1983-01-10
申请人： Hitachi Ltd
发明人： ITOU KAZUYUKI , KUBOTA SHIYOUJI , TAKASHIMA YOSHIE
IPC分类号： B01D35/06 , B03C1/033 , G21C19/307
CPC分类号： B03C1/0335
摘要： PURPOSE:To reduce the rising speed of pressure loss with the collection of fine particles in water, by controlling the intensity of a magnetic field so as to make the same max. in the effluent part of treated water and min. in the inflow part of raw water. CONSTITUTION:A pole piece 3A made of SUS304 being a non-magnetic body is arranged to the raw water inflow side of magnetic stainless steel wool 2 and a pole piece 3B being a ferromagnetic body is arranged to a treated water effluent side while an electromagnetic coil 5 is arranged to the outer periphery of a filter tower 1 and further surrounded by a return frame 4 made of soft iron. As a result, because ferromagnetic fine particles in water can be collected while dispersed in the magnetic stainless steel wool, the rising speed of pressure loss becomes mild. In addition, the pole piece 3A of the raw water inflow side can be formed of a magnetic body having small saturation magnetization of about 10-100emu/g.
摘要翻译：目的：通过控制磁场的强度，通过控制磁场的强度，减少压力损失的上升速度。在处理水的流出物中，在原水的流入部分。构成：将由SUS304制成的非磁性体的极片3A布置在磁性不锈钢丝绒2的原水流入侧，并且将铁磁体的极片3B设置在处理水流出侧，而电磁线圈 5设置在过滤塔1的外周，并由软铁制成的返回框架4进一步包围。结果，由于在分散在磁性不锈钢丝中的水中可以收集水中的铁磁性细颗粒，所以压力损失的上升速度变得温和。此外，原水流入侧的极片3A可以由具有约10-100emu / g的小饱和磁化强度的磁体形成。

2. 发明专利

JPS58196814A Backwashing method in electromagnetic filter type filter tower 失效
标题翻译：电磁过滤器类型过滤塔的回流方法
公开(公告)号：JPS58196814A
公开(公告)日：1983-11-16
申请号：JP7774182
申请日：1982-05-10
申请人： Hitachi Ltd
发明人： ITOU KAZUYUKI , EBARA KATSUYA , KUBOTA SHIYOUJI , IZUMI KENKICHI , TAKAHASHI SANKICHI , TAKASHIMA YOSHIE
IPC分类号： B01D35/06 , B03C1/032
摘要： PURPOSE: To exclude fine particles in good efficiency, by carrying out backwashing operation after water containing fine particles having zeta potential with inverse polarity with respect to fine particles in raw water is passed through and recirculated to a filter tower.
CONSTITUTION: The supply of raw water is stopped while valves 11, 12 are closed. In the next step, an electromagnetic coil 3 is stopped while valves 13, 14 are closed and water in a filter tower 1 is pressed out by usual backwashing operation. The valves 13, 14 are closed while valves 21, 22 are opened and water containing Fe
3 O
4 being fine particles having negative zeta potential is passed through and recirculated to the filter tower 1 for 30min. After the passage and the recirculation of the injected fine particle-containing water is finished, the valves 21, 22 are closed while the valves 13, 14 are opened to carry out backwashing operation again to press out water in the filter tower 1.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：为了以良好的效率排除细颗粒，通过进行反冲洗操作，在含有相对于原水中的细颗粒的反极性的具有ζ电位的微细颗粒的水通过并再循环到过滤塔之后。构成：阀11,12关闭时停止原水供应。在下一步骤中，电磁线圈3停止，同时阀13,14被关闭，并且通过反冲洗操作被压出过滤器塔1中的水。阀13,14关闭，而阀门21,22打开，含Fe 3 O 4的水分是具有负ζ电位的细颗粒，并通过过滤塔1再循环30分钟。在注入的含微粒水的通过和再循环完成之后，阀21,22关闭，同时打开阀13,14，再次进行反冲洗操作以压出过滤塔1中的水。

3. 发明专利

JPS5845598A REACTOR COOLANT CLEANUP SYSTEM 失效
公开(公告)号：JPS5845598A
公开(公告)日：1983-03-16
申请号：JP14389081
申请日：1981-09-14
申请人： HITACHI LTD
发明人： YAMAMOTO MICHIYOSHI , OOSUMI KATSUMI , MITANI SHINJI , TAKASHIMA YOSHIE
IPC分类号： G21F9/12 , G21C19/30 , G21C19/307 , G21F9/00

4. 发明专利

JPS58797A REACTOR COOLANT FEEDING SYSTEM 失效
公开(公告)号：JPS58797A
公开(公告)日：1983-01-05
申请号：JP9827881
申请日：1981-06-26
申请人： NIPPON GENSHIRYOKU HATSUDEN , HITACHI LTD
发明人： MEGURO YOSHINORI , SAKAI KIMIO , YAMAMOTO MICHIYOSHI , OOSUMI KATSUMI , TAKASHIMA YOSHIE
IPC分类号： G21D1/00 , G21D1/02

5. 发明专利

JPS57211594A CONDENSED WATER CLEANUP SYSTEM 失效
公开(公告)号：JPS57211594A
公开(公告)日：1982-12-25
申请号：JP9654481
申请日：1981-06-24
申请人： HITACHI LTD
发明人： YAMAMOTO MICHIYOSHI , OOSUMI KATSUMI , TAKASHIMA YOSHIE , MITANI SHINJI
IPC分类号： G21C19/307 , G21C19/30

6. 发明专利

JPS57167782A CONDENSATE PURIFYING SYSTEM 失效
公开(公告)号：JPS57167782A
公开(公告)日：1982-10-15
申请号：JP5182781
申请日：1981-04-08
申请人： HITACHI LTD
发明人： TAKASHIMA YOSHIE , AKAMINE KAZUHIKO , YAMAMOTO MICHIYOSHI
IPC分类号： C02F1/42 , G21F9/00 , G21F9/12
摘要： PURPOSE:To reduce the concns. of the iron clads in the 2nd hot well and a feed water system as far as possible in a nuclear power plant having a condensate purification and circulation system by providing a mixed bed type desalting device in this circulation system and a filter to the feed water system. CONSTITUTION:A mixed bed type desalting device 9 is installed to a condensate purifying and circulating system 15 and a filter desalting device 8 between a low pressure condensate pump 10 and a low pressure feed water 11. The clads produced from around the 1st hot well 5 of a condenser 4 in this purifying plant and the ion components leaking when sea water leaks are purified with the device 9. In parallel with this, the clads produced on the down stream of the 2nd hot well 6 can be removed with the filter 8. Hence, the concn. of the clads in a feed water system 14 to a nuclear reactor pressure vessel 1 is reduced.

7. 发明专利

JPH0399176A COOLING DEVICE 失效
公开(公告)号：JPH0399176A
公开(公告)日：1991-04-24
申请号：JP23533889
申请日：1989-09-11
申请人： HITACHI LTD
发明人： SUZUKI TOSHIYUKI , ISHIDA TAKAYUKI , WATANABE TAKAO , TAKASHIMA YOSHIE
IPC分类号： F25D1/00
摘要： PURPOSE:To prevent an over-cooling or a under cooling of a cooled fluid by a method wherein a metering instruction for metering a degree of opening to a predetermined degree of opening is outputted to means for metering a supplying amount of refrigerant in compliance with an output of a changing-over instruction from a high flow rate of refrigerant to its low flow rate. CONSTITUTION:A temperature control device 20 may output a stopping instruction to an air blower 4 when an inlet fluid temperature detected by an inlet fluid thermometer 11 is lower than a set temperature set in a setting device 21 so as to output an energization instruction. An instruction for controlling a degree of opening in response to a difference between an outlet fluid temperature outputted from PI controlling device 8 and a target temperature is inputted to a driving means through a changing- over device 23. A set instruction for a degree of opening set by a degree of opening setting device 22 is inputted to the other terminal of the changing-over device 23. The changing-over device 23 is constructed to be changed over to the degree of opening setting device 22 in response to a timer 24. Since a metering instruction for metering it to a predetermined degree of opening is outputted to the metering means, the flow rate is once reduced to a predetermined flow rate, resulting in that it is possible to prevent a rapid reduction of temperature of the cooling fluid at an outlet port of the heat exchanger or to prevent an over-cooling.

8. 发明专利

JPH0346596A METHOD AND DEVICE FOR CONTROLLING OUTPUT OF NUCLEAR REACTOR 失效
公开(公告)号：JPH0346596A
公开(公告)日：1991-02-27
申请号：JP18034989
申请日：1989-07-14
申请人： HITACHI LTD
发明人： MIYAMOTO YOSHIYUKI , MIZUKI FUMIO , TAKASHIMA YOSHIE
IPC分类号： G21C7/00 , G21D3/00 , G21D3/04 , G21D3/06
摘要： PURPOSE:To decrease in an early stage the vapor flow rate at the time of feed water trip and to decrease the possibility of a nuclear reactor scram by bringing a second pump to run-back, based on a tip signal generated at the time when a first pump is tripped. CONSTITUTION:When such abnormality as a feed water pump 11A is tripped in a regular operating state of 100% output and 85% reactor core flow rate QR by a nuclear reactor output control 30, and a feed water pump 15 being in a stand-by state is not actuated is generated, a vapor stop valve 14 is fully closed by a trip signal St, and by a run-back signal from a feed water abnormal time control means 31, a recirculating flow rate controller 61 derives the speed of revolution of an internal pump (RIP) 17 by which the flow rate QR corresponding to 75% output of the nuclear reactor, and brings the speed of revolution of the RIP 17 to run-back by a control signal R1. Simultaneously, a control rod driving controller 62 operates 19 a selected control rod, inserts it into a reactor core 2 by a signal CR. In such a way, by operating one set of turbine driving type feed water pump 11B, a nuclear reactor scram can be avoided, and by lowering an output of the nuclear reactor to about 55%, line-out of the feed water pump can be prevented.

9. 发明专利

JPS5876116A OPTIMUM OPERATION OF FILTERING AND DESALTING VESSEL 失效
公开(公告)号：JPS5876116A
公开(公告)日：1983-05-09
申请号：JP17273981
申请日：1981-10-30
申请人： HITACHI LTD
发明人： NISHIMURA SHIGEOKI , ADACHI TETSUROU , EBARA KATSUYA , OGAWA TOSHIO , TAKAHASHI SANKICHI , IZUMI KENKICHI , KUBOTA SHIYOUJI , TAKASHIMA YOSHIE , NUMAZAKI SEIICHI
IPC分类号： B01D37/02 , G21F9/00 , G21F9/06
摘要： PURPOSE:To prolong the filtering life of a filtering and desalting vessel, in the condensed water filtering and desalting vessel of an atomic power plant, by a method wherein precoating operation is carried out one time or more during water sampling and the density of a precoated layer after a second layer is made lower than that of a first layer. CONSTITUTION:After a turbine is rotated by steam generated in a nuclear reactor to carry out the production of electric power, said steam is recovered as condensed water from a condenser and impurities in the condensed water are removed by a filtering and desalting vessel and a desalting vessel. In this filtering and desalting vessel, an element is precoated with a powdery ion exchange resin to filter solid substance but precoating operation is carried out one time or more during water sampling and the density of a precoated layer after a second layer is made lower than that of a first layer. That is, the resin density of the first layer is adjusted to 0.15g/cm or more and the resin amount thereof is adjusted to 0.045g/cm and the concn. of a precoating resin in a liquid above the second layer is adjusted to 0.05wt%. By this method, clad is perfectly removed and the utilization efficiency of the resin can be enhanced.

10. 发明专利

JPS5815196A STEAM GENERATING PLANT 失效
公开(公告)号：JPS5815196A
公开(公告)日：1983-01-28
申请号：JP11345781
申请日：1981-07-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ISHIMARU HITOSHI , NAGAI HIROTSUGU , MASUDA TOYOHIKO , OOSUMI KATSUMI , YAMAMOTO MICHIYOSHI , TAKASHIMA YOSHIE
IPC分类号： F22B37/56 , F22D11/00 , G21C19/30 , G21C19/307 , G21D1/02 , G21D5/06

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