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Multi-factor detection system for ageing state of electromagnetic relay and ageing state estimation method

A technology of electromagnetic relay and aging state, which is applied in the direction of circuit breaker testing, etc., can solve problems such as evaluation, no test results, and influence on reliable operation of nuclear power plant control systems, and achieve the effect of accurate aging state

Inactive Publication Date: 2012-08-15
SUZHOU NUCLEAR POWER RES INST +1
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Problems solved by technology

The aging degradation of the electromagnetic relay will directly affect its performance, resulting in a decrease in reliability, which will affect the reliable operation of the control system of the nuclear power plant. Therefore, it is necessary to effectively detect and evaluate the aging state of the electromagnetic relay and grasp its current aging state. , in order to take effective measures in time to avoid serious consequences caused by relay aging
[0003] The current detection technology for electromagnetic relays includes measuring contact resistance, coil resistance, pull-in voltage, release voltage, bounce time, insulation resistance, etc. These detection methods are simple, and the measured parameters are all intuitive parameters, and there is no correct test The method of evaluating the results does not involve microscopic inspection, and the test of the insulation level of the coil enameled wire is also rare, and there is no method of combining various detection methods for comprehensive evaluation.

Method used

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  • Multi-factor detection system for ageing state of electromagnetic relay and ageing state estimation method
  • Multi-factor detection system for ageing state of electromagnetic relay and ageing state estimation method
  • Multi-factor detection system for ageing state of electromagnetic relay and ageing state estimation method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] see figure 1 , multi-factor detection system for electromagnetic relay aging state, including adjustable voltage source 1, resistance measuring instrument 3, multimeter 5, temperature sensor 4, multi-channel data acquisition card 6, computer 7, contact microcurrent contact resistance test device 8, A scanning electron microscope with energy spectrum analysis 9, a device 10 for obtaining the insulation level of coil enameled wire, in figure 1 Among them, the adjustable regulated voltage source 1 is connected with the electromagnetic relay 2 to be tested to provide analog voltages for the relay 2 to be tested at different voltage levels, and the resistance measuring instrument 3 measures the contact resistance and coil resistance of the relay 2 to be tested, The multimeter 5 measures the pull-in voltage and the release voltage of the relay 2 to be tested, the tem...

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Abstract

The invention discloses a multi-factor detection system for an ageing state of an electromagnetic relay and an ageing state estimation method. Through measuring a plurality of ageing sensitivity parameters such as contact resistance, coil resistance, attraction voltage, release voltage, coil temperature and coil enameled wire insulation level and carrying out contact surface microcosmic detection and microanalysis, and by comprehensively analyzing the ageing parts and ageing reasons of the electromagnetic relay, the ageing state of the electromagnetic relay is completely and accurately evaluated.

Description

technical field [0001] The invention relates to a multi-factor detection system for the aging state of an electromagnetic relay, and also relates to a method for evaluating the aging state of an electromagnetic relay. Background technique [0002] As a typical control element, electromagnetic relays are widely used in nuclear power plant control systems. Studies have shown that electromagnetic relays are one of the components that are prone to aging and failure. The aging degradation of the electromagnetic relay will directly affect its performance, resulting in a decrease in reliability, which will affect the reliable operation of the control system of the nuclear power plant. Therefore, it is necessary to effectively detect and evaluate the aging state of the electromagnetic relay and grasp its current aging state. , in order to take effective measures in time to avoid serious consequences caused by relay aging. [0003] The current detection technology for electromagnet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
Inventor 石颉姚建林施海宁
Owner SUZHOU NUCLEAR POWER RES INST
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