公开(公告)号：US20160189807A1

公开(公告)日：2016-06-30

申请号：US14981407

申请日：2015-12-28

申请人： KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.

发明人： In Ho SONG ,  Myung Jun SONG ,  See Chae JEONG ,  Ju Han LEE ,  Shin Whan Kim ,  Eung Seo Kim

IPC分类号： G21C7/32 ,  G21C7/36 ,  G21D3/00

CPC分类号： G21D3/001 ,  F22B35/004 ,  F22B37/46 ,  F22D5/30 ,  F22D5/32 ,  G21D3/04 ,  Y02E30/40

摘要： Provided are a method and system for improving control of a steam generator level for preventing oscillation of the steam generator level in a nuclear power plant. In order to prevent oscillation of a steam generator level and resultant shutdown of a nuclear reactor, which may be caused when a high-level priority control function is frequently and repeatedly turned on/off as the steam generator level is excessively increased, by improving a feedwater control system in the nuclear power plant, a proportional integral control value may be controlled to be reduced, and thus, output while a certain condition is met after a high-level priority mode is deactivated or a signal instructing to enter the high-level priority control mode may be controlled not to be output.

摘要翻译： 提供了一种用于改善蒸汽发生器水平的控制以防止核电站中的蒸汽发生器水平的振荡的方法和系统。 为了防止当蒸汽发生器水平过度增加时高水平优先控制功能频繁且重复打开/关闭时可能引起的蒸汽发生器水平的振荡和核反应堆的关闭，通过改进 核电厂的给水控制系统，可以将比例积分控制值控制为降低，从而在高电平优先模式被禁用或者指示进入高电平的信号之后满足一定条件时输出 可以控制优先级控制模式不被输出。

公开(公告)号：US20170211821A1

公开(公告)日：2017-07-27

申请号：US15222206

申请日：2016-07-28

申请人： The Marley-Wylain Company

发明人： Ryan Jeremy Hardesty ,  Daniel George Karch ,  David Ralston King ,  Owen Andrew Cunningham ,  Neil Damon Butt ,  Aaron Sevrin Smith ,  Jeffrey John Calabro

IPC分类号： F24D19/10 ,  F24D12/02 ,  F22D5/32 ,  F24D3/08 ,  F22D5/24 ,  F22D5/34

CPC分类号： F24D19/1066 ,  F22D5/32 ,  F22D5/34 ,  F24D3/082 ,  F24D12/02 ,  Y02B30/14 ,  Y02E20/14

摘要： A hydronic system having a set of inputs, a plurality of boilers, and a controller. Each input representing sensor for a respective heat emitter of a set of heat emitters. Each boiler of the plurality of boilers is configured to receive signals from a portion of the set of inputs. The controller is configured to a status and assignment of the set of inputs from the plurality of boilers and control the plurality of boilers to provide heat to the set of heat emitters.

公开(公告)号：US4541365A

公开(公告)日：1985-09-17

申请号：US661035

申请日：1984-10-15

申请人： William S. Jennings ,  Clark E. Fegraus

发明人： William S. Jennings ,  Clark E. Fegraus

IPC分类号： F04B13/02 ,  F04B43/067 ,  F04B49/02 ,  F22D5/32 ,  F22D11/02 ,  F22D5/26

CPC分类号： F22D11/02 ,  F04B13/02 ,  F04B43/067 ,  F04B49/02 ,  F22D5/32

摘要： An apparatus and method of supplying feedwater to a forced flow boiler or the like as described. A positive displacement pump having a plurality of discrete pumping elements is arranged to pump feedwater from an inlet to the boiler. The pump includes bypass valves which, when open, disable the pumping action of an associated pumping element. Control means responsive to the demand for water in the boiler are arranged to disable a selected number of the pumping elements so that the rate of water supplied by the remaining elements, if operated continuously, would just exceed that required. The control means is further arranged to disable at least one of the remaining pumping elements on a periodic basis so that the ratio of time that the element is enabled to the time for one period multiplied by the water flow rate supplied by said element, if operated continuously, equals the difference between the total demand for water and the rate supplied by the pumping elements enabled on a full-time basis.

摘要翻译： 将给水供给到如上所述的强制流动锅炉等的装置和方法。 具有多个离散泵送元件的容积式泵被布置成将给水从入口泵送到锅炉。 泵包括旁路阀，当旁路阀打开时，禁用泵送元件的泵送动作。 响应于锅炉中对水的需求的控制装置被布置成禁用所选数量的泵送元件，使得如果连续操作，剩余元件供应的水的速率将超过所需的数量。 控制装置还被布置成周期性地禁用剩余的泵送元件中的至少一个，使得元件被施加的时间与一个周期的时间乘以由所述元件提供的水流速度的时间的比率，如果操作 持续地等于水的总需求与由全时间启用的泵送元件提供的速率之间的差异。

公开(公告)号：US5771846A

公开(公告)日：1998-06-30

申请号：US620331

申请日：1996-03-22

申请人： Christoph Ruchti

发明人： Christoph Ruchti

IPC分类号： F22B1/18 ,  F22B35/00 ,  F22D5/30 ,  F22D5/32

CPC分类号： F22D5/32 ,  F22B35/007

摘要： In a method for feed water control in waste heat steam generators, in particular drum boilers with a circulating pump (9) and drum boilers with natural circulation employed in combination power plants, wherein, by a three-component control by means of a superordinated level regulator (13) and a flow-through regulator (14) subordinated to the level regulator (13), the set value (S.sub.in) of the flow-through regulator (14) is displaced by the level regulator (13) in such a way that the level in the drum (6) is always regulated to the set value (S), regardless of interfering effects, the flow-through regulator (14) for the feed water flow (m.sub.s) is guided by the heat amount (Q.sub.AG) in the exhaust gas flow. The output signal of the flow-through regulator (14) for the feed water flow (m.sub.s) is limited, wherein as the function of the heat amount (Q.sub.AG) in the exhaust gas flow a selection is made between a limit value (m.sub.1) for the start-up operation and a limit value (m.sub.2) for normal control operation and the switch from (m.sub.1) to (m.sub.2) takes place via a time function element (16) with an idle time (T).

摘要翻译： 在用于组合发电厂的废热蒸汽发生器，特别是具有循环泵（9）的鼓式锅炉和具有自然循环的鼓式锅炉的废热蒸汽发生器中的给水控制方法中，其中，通过以上级别的三分量控制 调节器（13）和从属于电平调节器（13）的流通调节器（14），流通调节器（14）的设定值（Sin）以这种方式被电平调节器（13）置换 无论干扰效果如何，鼓（6）中的水平总是被调节到设定值（S），用于给水流（+ E，点m + EE s）的流通调节器（14）被引导 通过废气流中的热量（+ E，点Q + EE AG）。 用于给水流量（ms）的流通调节器（14）的输出信号被限制，其中随着排气中的热量（+ E，点Q + EE AG）的功能的选择被做出 用于启动操作的极限值（+ E，点m + EE 1）和用于正常控制操作的极限值（+ E，点m + EE 2）和从（+ E，点m + EE 1）到（+ E，点m + EE 2）经由具有空闲时间（T）的时间函数元素（16）发生。

公开(公告)号：US3972654A

公开(公告)日：1976-08-03

申请号：US471242

申请日：1974-05-20

申请人： William Clayton ,  George W. Mattox

发明人： William Clayton ,  George W. Mattox

IPC分类号： F04B43/00 ,  F04B43/073 ,  F04B49/24 ,  F22D5/32 ,  F22D11/02 ,  F04B9/08 ,  F04B43/06 ,  F22D5/26

CPC分类号： F22D5/32 ,  F04B43/0054 ,  F04B43/073 ,  F04B49/24 ,  F22D11/02

摘要： A hydraulic fluid control system regulates the delivery rate of feed water to a boiler. A hydraulic actuated diaphragm pump having a plurality of diaphragm working chambers which are interconnected with check valve controlled inlets and outlets pumps the feed water to the boiler. Fluid surges or pulsations are prevented by the use of projection members on the face of the diaphragms and by a variably controlled pressure regulator responsive to the feed water pressure. The delivery rate of hydraulic fluid to the diaphragms controls the actual pumping output. A bypass line including a pressure regulating valve with pilot control and a modulating control valve controls a bypass hydraulic fluid rate which directly corresponds to the pumping output rate.

摘要翻译： 液压流体控制系统调节给锅炉的给水输送速率。 具有多个隔膜工作室的液压致动隔膜泵，其与止回阀控制的入口和出口互连，将给水泵送到锅炉。 通过使用在隔膜的表面上的突出构件和响应于给水压力的可变控制的压力调节器来防止流体冲击或脉动。 液压流体到膜片的输送速率控制实际的泵送输出。 包括具有先导控制的调压阀和调节控制阀的旁路管路控制直接对应于泵送输出速率的旁路液压流体速率。