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1. 发明授权

US6021169A Feedwater control over full power range for pressurized water reactor steam generators 有权
标题翻译：给水反应堆蒸汽发生器的全功率范围的给水控制
公开(公告)号：US6021169A
公开(公告)日：2000-02-01
申请号：US176799
申请日：1998-10-22
申请人： James E. Robertson , Deva R. Chari , Stephen J. Wilkosz
发明人： James E. Robertson , Deva R. Chari , Stephen J. Wilkosz
IPC分类号： G21D3/00 , F22B35/00 , G21D3/14 , G21C7/32 , G21C7/00 , G21C7/36
CPC分类号： G21D3/14 , F22B35/004 , G21Y2002/201 , G21Y2002/205 , G21Y2002/304 , G21Y2004/30 , G21Y2004/401 , G21Y2004/403 , Y02E30/40
摘要： A feedwater control system and method for a pressurized water reactor steam generating system having first and second output signals. The first output signal is determined by first and second input signals, and, when combined with a third input signal automatically controls at least one feedwater pump and first designated valves which regulate water flow from the one or more feedwater pumps to a steam generator when a steam generator steam load and reactor are operating at a first predetermined power level. The first input signal is determined by a downcomer feedwater flow differential pressure. The second input signal is determined by a reactor power level. The third input signal is determined by a steam generator level. The second output signal, determined by a steam generator water level, automatically controls at least one startup feedwater control valve when the steam generator steam load and the reactor are operating at a second predetermined power level. In a preferred embodiment, the first designated valves include at least one economizer feedwater control valve and at least one downcomer feedwater control valve. Also, in a preferred embodiment, the first predetermined power level is between about 5 and about 20 percent, and the second predetermined power level is between zero and about 5 percent.
摘要翻译：一种具有第一和第二输出信号的加压水反应堆蒸汽发生系统的给水控制系统和方法。第一输出信号由第一和第二输入信号确定，并且当与第三输入信号组合时，自动控制至少一个给水泵和第一指定阀，其将来自一个或多个给水泵的水流调节到蒸汽发生器蒸汽发生器蒸汽负载和电抗器工作在第一预定功率水平。第一输入信号由降液管给水流量差压决定。第二输入信号由电抗器功率电平决定。第三输入信号由蒸汽发生器水平确定。当蒸汽发生器蒸汽负载和电抗器工作在第二预定功率水平时，由蒸汽发生器水位确定的第二输出信号自动控制至少一个启动给水控制阀。在优选实施例中，第一指定阀包括至少一个节能器给水控制阀和至少一个降液管给水控制阀。而且，在优选实施例中，第一预定功率水平在约5％至约20％之间，而第二预定功率水平介于零和约5％之间。

2. 发明授权

US5960049A Pump selection logic 失效
标题翻译：泵选择逻辑
公开(公告)号：US5960049A
公开(公告)日：1999-09-28
申请号：US025925
申请日：1998-02-19
申请人： Stephen J. Wilkosz , Deva R. Chari , James E. Robertson
发明人： Stephen J. Wilkosz , Deva R. Chari , James E. Robertson
IPC分类号： G21D1/04 , G21C15/00
CPC分类号： G21D1/04 , G21Y2002/205 , G21Y2002/208 , G21Y2004/401 , G21Y2004/403 , Y02E30/40
摘要： The operator of a nuclear steam supply system manually selects a lineup of either one, two, or three main feedwater pumps for normal reactor operation to generate power. This selection sets or resets a status latch for each pump, representative of intended pump operation. A system (RPCS) for implementing a step reduction in the power output of the reactor, includes an associated logic circuit which combines signals indicative of tripping of one or more pumps, with the pump status latches, to achieve the following outcomes: (a) with one pump selected, a trip of this one pump does not produce an RPCS trip demand signal (because the reactor will be tripped); (b) with two pumps selected, (i) a trip of one pump will produce an RPCS trip demand signal, whereas (ii) a trip of these two pumps will not produce an RPCS trip demand signal; (c) with three pumps selected, (i) a trip of one pump will not produce an RPCS trip demand signal (because the transient can be handled by the basic control system), (ii) a trip of two pumps will produce an RPCS trip demand signal, and (iii) a trip of three pumps will not produce an RPCS trip demand signal.
摘要翻译：核蒸汽供应系统的操作者手动选择一个，两个或三个主要给水泵的阵容，用于正常的反应堆操作以产生电力。该选择设置或复位每个泵的状态锁定，代表预期的泵操作。用于实现反应堆功率输出的步骤降低的系统（RPCS）包括将指示一个或多个泵跳闸的信号与泵状态锁存器组合的相关逻辑电路，以实现以下结果：（a）选择一个泵，该一个泵的跳闸不产生RPCS跳闸要求信号（因为反应器将被跳闸）; （b）选择两个泵，（i）一个泵的跳闸将产生RPCS跳闸要求信号，而（ii）这两个泵的跳闸将不产生RPCS跳闸要求信号; （c）选择三个泵，（i）一个泵的跳闸不会产生RPCS跳闸要求信号（因为瞬态可以由基本控制系统处理），（ii）两个泵的跳闸将产生RPCS 旅行需求信号，（iii）三个泵的跳闸不会产生RPCS跳闸要求信号。

3. 发明授权

US06380734B1 Control element assembly position verification apparatus 有权
标题翻译：控制元件装配位置验证装置
公开(公告)号：US06380734B1
公开(公告)日：2002-04-30
申请号：US09166902
申请日：1998-10-06
申请人： Deva R. Chari , Edward G. Sirica
发明人： Deva R. Chari , Edward G. Sirica
IPC分类号： G01B714
CPC分类号： G01D5/2515 , G01B7/003 , G21C17/12
摘要： A position verification apparatus comprising a movable member disposed within and movable with respect to a housing containing the movable member, a means for generating a magnetic field within the housing, a first magnetically responsive means for sensing the position of the movable member and outputting a signal indicative of the position of the movable member, a second magnetically responsive means for sensing the presence of the movable member and outputting a signal indicative of the position of the movable member and a means for comparing the signal output from the first magnetically responsive means and the signal output from the second magnetically responsive means.
摘要翻译：一种位置验证装置，包括可移动构件，该可移动构件设置在容纳可移动构件的壳体内并可移动;可移动构件，用于在壳体内产生磁场的装置，用于感测可移动构件的位置并输出信号的第一磁力响应装置指示可移动构件的位置的第二磁响应装置，用于感测可移动构件的存在并输出指示可移动构件的位置的信号的第二磁响应装置和用于比较来自第一磁力响应装置的信号和信号从第二磁响应装置输出。

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