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Nuclear power plant RCP main pump vibration phase monitoring system and method

A vibration phase and monitoring system technology, applied in the field of measurement, can solve the problems of lack of online analysis and diagnosis basis, inability to monitor phase online, etc., to reduce the number of start-up and stop times and dynamic balance window time, reduce the occupation of critical paths for shutdown and overhaul, and reduce radiation effect of dosage

Active Publication Date: 2019-09-27
SUZHOU NUCLEAR POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of this invention is to provide a kind of vibration phase monitoring system and method of RCP main pump of nuclear power plant, to solve the technical problem that the existing technology cannot monitor the phase online during the power operation; Problems based on online analysis and diagnosis

Method used

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  • Nuclear power plant RCP main pump vibration phase monitoring system and method
  • Nuclear power plant RCP main pump vibration phase monitoring system and method
  • Nuclear power plant RCP main pump vibration phase monitoring system and method

Examples

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Embodiment 1

[0043] A nuclear power plant RCP main pump vibration phase monitoring system, such as image 3 As shown, the system includes:

[0044] Vibration probe 1: electrically connected to the vibration frame, used to collect vibration signals on the measured shaft;

[0045] Vibration rack 2: electrically connected to the hand-held dynamic balance tester, used to process the vibration signal collected by the vibration probe;

[0046] Standby rotational speed probe 3: be electrically connected with signal transition box, be used for collecting pulse signal, described pulse signal is the pulse signal that produces when the measured shaft rotates every revolution;

[0047] Signal transfer box 4: electrically connected to the spare speed probe and the key phase module in the key phase signal processing cabinet, used to shunt the pulse signals collected by the spare speed probe and transmit them to the speed signal processing unit and the key phase signal processing cabinet respectively T...

Embodiment 2

[0053] A nuclear power plant RCP main pump vibration phase monitoring system, such as figure 1 As shown, the system includes:

[0054] Vibration probe 1: electrically connected to the vibration frame, used to collect vibration signals on the measured shaft;

[0055] Vibration rack 2: electrically connected to the hand-held dynamic balance tester, used to process the vibration signal collected by the vibration probe;

[0056]Standby rotational speed probe 3: be electrically connected with signal transition box, be used for collecting pulse signal, described pulse signal is the pulse signal that produces when the measured shaft rotates every revolution;

[0057] Signal transfer box 4: electrically connected with the spare speed probe, the key phase signal processing cabinet, and the speed signal processing unit, used to shunt the pulse signals collected by the spare speed probe, and transmit them to the speed signal processing unit and the key phase signal processing cabinet re...

Embodiment 3

[0063] A nuclear power plant RCP main pump vibration phase monitoring system, such as image 3 As shown, the system includes:

[0064] Vibration probe 1: electrically connected to the vibration frame, used to collect vibration signals on the measured shaft;

[0065] Vibration rack 2: electrically connected to the hand-held dynamic balance tester, used to process the vibration signal collected by the vibration probe;

[0066] Standby rotational speed probe 3: be electrically connected with signal transition box, be used for collecting pulse signal, described pulse signal is the pulse signal that produces when the measured shaft rotates every revolution;

[0067] Signal transfer box 4: electrically connected to the spare speed probe, the speed signal processing unit and the key phase module in the key phase signal processing cabinet, used to shunt the pulse signals collected by the spare speed probe and transmit them to the speed signal processing unit and The key phase module...

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Abstract

The invention provides a nuclear power plant RCP main pump vibration phase monitoring system and method. The system comprises a vibration probe, a vibration rack, a standby rotating-speed probe, a signal transfer box, a key-phase signal processing cabinet and a hand-held dynamic balance tester, wherein the vibration probe is used for collecting vibration signals on a tested shaft, the vibration rack is used for processing the vibration signals collected by the vibration probe, the standby rotating-speed probe is used for collecting pulse signals, and the pulse signals are pulse signals generated each time when the tested shaft rotates by a circle; and the signal transfer box is used for shunting pulse signals generated by the standby rotating-speed probe and transfers the pulse signals to a rotating-speed signal processing unit and a key-phase module in the key-phase signal processing cabinet. According to the nuclear power plant RCP main pump vibration phase monitoring system, a temporary phase probe does not need to be additionally added, the start-stop frequency of a main pump can be significantly decreased, the dynamic balance window time can be significantly shortened, critical paths of occupation and outage overhaul can be reduced, and meanwhile the radiation dosage which is caused by adding temporary phase probes and borne by operators is reduced.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a vibration phase monitoring system and method of an RCP main pump of a nuclear power plant. Background technique [0002] Since the RCP main pump of the nuclear power plant operates under the conditions of high temperature, high pressure and high radiation, and there is no backup and cannot be shut down during power operation, the main pump vibration will cause mechanical fatigue damage, shafting cracks, dynamic and static friction, seal failure, etc. Serious failure, and vibration monitoring is an important means to judge the health status of the main pump. [0003] At present, the vibration state of the main pump in some early-built nuclear power plants is divided into online monitoring and offline monitoring. Monitoring methods such as figure 1 Shown: [0004] Online monitoring: The three main pumps are independently equipped with 4 online sensors (2 bearin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 刘南川蒋建军丁春龙许天祥胡喜庆包林
Owner SUZHOU NUCLEAR POWER RES INST
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