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Nuclear power plant feed pump rotating speed fault diagnosis device and fault judgment method

A fault diagnosis device and water pump technology, which is applied in pump testing, liquid displacement machinery, machine/engine, etc., can solve the problem of poor stability of the structure and control loop, complex structure and control loop of the fault diagnosis device, and inaccurate fault diagnosis results. Accuracy and other issues, to achieve the effect of shortening the diagnosis cycle, reducing the occupied space, and simplifying the structure

Active Publication Date: 2021-03-16
LINGDONG NUCLEAR POWER +5
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, when diagnosing the fault of the electric feed water pump speed, it is often determined by the actual speed of the feed water pump, but when determining the speed of the feed water pump, it is necessary to work through the working oil circuit and the control oil circuit at the same time, so that the structure and control circuit of the fault diagnosis device are more complicated. Complex, and the complex structure and poor stability of the control loop lead to inaccurate fault diagnosis results

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  • Nuclear power plant feed pump rotating speed fault diagnosis device and fault judgment method
  • Nuclear power plant feed pump rotating speed fault diagnosis device and fault judgment method
  • Nuclear power plant feed pump rotating speed fault diagnosis device and fault judgment method

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[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to the technical field of nuclear power plant maintenance optimization, in particular to a nuclear power plant feed pump rotating speed fault diagnosis device and a fault judgment method, wherein the nuclear power plant feed pump rotating speed fault diagnosis device comprises an execution assembly used for simulating feed pump rotating speed adjustment through self positionchange; an adjusting assembly which is connected with the execution assembly and used for receiving a control signal sent by a control assembly of the feed pump and controlling a control oil way to adjust the position of the execution assembly; and a measuring assembly which is used for being connected with the control assembly of the feed pump so as to measure position output information of the control assembly of the feed pump, wherein the position output information is used for representing the running state of the control assembly of the feed pump. According to the nuclear power plant feedpump rotating speed fault diagnosis device, the structure of the diagnosis device is simplified, an oil path system is optimized, the number of parts is reduced, the occupied space of the device is reduced, the accuracy of a diagnosis result is improved, and the diagnosis period is shortened.

Description

technical field [0001] The invention relates to the technical field of maintenance optimization for nuclear power plants, in particular to a fault diagnosis device and a fault judgment method for a feed water pump speed of a nuclear power plant. Background technique [0002] Conventional island electric feed water pumps often experience large fluctuations in speed, and in severe cases, the speed even completely loses control. The electric feedwater pump directly affects the stability of the evaporator water level control. Once the electric feedwater pump speed fluctuates greatly, it will inevitably cause the evaporator water level to follow the fluctuation, which will have a huge impact on the safe and stable operation of the unit. The water pump speed is the direct factor for adjusting the feedwater flow. factor. [0003] At present, when diagnosing the fault of the electric feed water pump speed, it is often determined by the actual speed of the feed water pump, but when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 王晓刚王宝刚张世伟孙跃余进程
Owner LINGDONG NUCLEAR POWER
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