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21. 发明专利

JPS60210796A Device for monitoring and controlling region of operation 失效
标题翻译：用于监测和控制操作区域的装置
公开(公告)号：JPS60210796A
公开(公告)日：1985-10-23
申请号：JP6691084
申请日：1984-04-04
申请人： Hitachi Ltd
发明人： FUJIHIRA KAZUSHIGE , YOSHIMOTO YUUICHIROU , JIYOUGE TOSHIO
IPC分类号： G21C7/26 , G21C7/00 , G21D3/00 , G21D3/04
CPC分类号： Y02E30/31 , Y02E30/39

22. 发明专利

JPS57158597A SOLE LOAD FOLLOW-UP OPERATION DEVICE IN BWR TYPE REACTOR 失效
公开(公告)号：JPS57158597A
公开(公告)日：1982-09-30
申请号：JP4396781
申请日：1981-03-27
申请人： HITACHI LTD
发明人： FUJIHIRA KAZUSHIGE
IPC分类号： G21D3/00 , G21C7/00 , G21C7/26 , G21D3/08

23. 发明专利

JPS5439788A CONTROL SYSTEM OF ATOMIC PLANT 失效
公开(公告)号：JPS5439788A
公开(公告)日：1979-03-27
申请号：JP10489877
申请日：1977-09-02
申请人： HITACHI LTD
发明人： FUJIHIRA KAZUSHIGE
IPC分类号： G21D3/04 , G21D3/08
摘要： PURPOSE:To transfer to an indipendent load operation in the plant without any uprisings of neutron flux and the water level of a reactor, by means of restraining the uprising of neutron flux by the trip of a recycling pump, and of restraining the uprising of the water level of the reactor by the trip of the feed water. CONSTITUTION:The recycling flow quantity is allowed to be rashly reduced by means of effecting the trip (a block 107) of a recycling pump at the same time as the stopping of the load (a block 100) and before the uprising of the pressure is generated, the void in the core is increased, thereby the neutron flux is lowered. The uprising of the liquid level generated from the void inreasing is restrained by means of allowing the feed water flow quantity to be rashly reduced by tripping (a block 108) one among the feed water pumps of a turbin driving during the two are in operation, considering that the output is set finally at 40-50% by the trip of the recycling pump (a block 107) and the selection inseting (a block 103) of the control rod. And the run out at the tripping time of the feed water pump is prevented by means of multiplying a max. limiting control to a feed water flow quantity signal.

24. 发明专利

JPS523996A RECIRCULATING FLOW CONTROL SYSTEM FOR REACTOR PLANT 失效
公开(公告)号：JPS523996A
公开(公告)日：1977-01-12
申请号：JP7937175
申请日：1975-06-27
申请人： HITACHI LTD
发明人： SHIDA TOUICHI , NAKAMURA HIDEO , HIROSE MASAO , FUJIHIRA KAZUSHIGE
IPC分类号： G21C7/26 , G21D3/08
摘要： PURPOSE:Recirculating flow is controlled when a temperature of supplied water is lowered to decrease a possibility of scrum of high neutron flux and further to maintain a good condition of the fuel.

25. 发明专利

JPH04351994A NUCLEAR POWER PLANT AND ITS OPERATION CONTROLLING METHOD 失效
公开(公告)号：JPH04351994A
公开(公告)日：1992-12-07
申请号：JP12725791
申请日：1991-05-30
申请人： HITACHI LTD
发明人： SUZUKI TOSHIYUKI , FUJIHIRA KAZUSHIGE , KAWASAKI TAKEHIDE
IPC分类号： G21C7/00
摘要： PURPOSE:To suppress the distortion of output distribution in the inside of a nuclear reactor to the limited level even if abnormality occurs in a water supply cooling system. CONSTITUTION:When abnormality occurs in the water supply cooling system and voids increase and thus the output of a nuclear reactor lowers, a control rod driving circuit 10 works to control insertion and draw of the control rod 6 owing to the difference between the detected level of a neutron flux detector 3 and the set level A so as to make the difference become 0. At that time, when the breakaway continuing time of the sub-cool degree from a normal range surpasses the set time of a timer 31, a signal to lower the level of the set level A is sent to a subtracter 41 and when the output set level at the normal time is 100%, the output set level is lowered to 80% at the time of abnormality of the sub-cool degree. Consequently, output distribution in the inside of the nuclear reactor is not greatly distorted.

30. 发明专利

JPS54152787A CONTROLLER OF REACTOR PROVIDED WITH STEAM DRUM 失效
公开(公告)号：JPS54152787A
公开(公告)日：1979-12-01
申请号：JP6100078
申请日：1978-05-24
申请人： HITACHI LTD
发明人： FUJIHIRA KAZUSHIGE
IPC分类号： G21D3/08
摘要： PURPOSE:To improve the working ratio of a plant, by minimizing the variation of output by keeping a water-level of a drum constant by changing the set points of a feed-water controller and a pressure controller when changing over the speed of a recirculation pump. CONSTITUTION:Bias 33, 34 and the signals of relay contacts C1, D1 are added to an adder 35 of a feed-water controller 17, and bias 37, an integrator 38 and the signals of relay contacts are added to an adder 39 of a pressure controller 20. The speed of a recirculation pump is changed over by make-and-break controlling relay contacts A1, A2, B1, B2, pressure set value and water-level set value are changed by decreasing or increasing water-level set signals and by diminishing or augmenting pressure set signals in response to the integral speed of the integrator 39 and the pressure set value is restored by altering the output of the integrator 39 after transient change settles down. Thus, the variation of the output of a turbine being accompanied by the change-over of the pump can be prevented, and the working ratio of a plant can be improved.

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