Electromagnetic valve performance test method for AP1000 main steam and main water supply isolation valve

Abstract

The invention relates to the technical field of nuclear power overhaul, in particular to an electromagnetic valve performance test method for an AP1000 main steam and main water supply isolation valve, which comprises the following steps of: S01, performing pipeline cleaning and exhaust operation on an electromagnetic valve test area through an electromagnetic valve performance test system; S02, performing electromagnetic valve insulation test on the electromagnetic valve to be tested; S03, performing a current characteristic test on the electromagnetic valve to be tested; S04, performing a field loss sealing test on the electromagnetic valve to be tested; S05, carrying out an excitation sealing test on the electromagnetic valve to be tested; and S06, analyzing the test result to judge whether the performance of the tested electromagnetic valve is qualified or not. According to the method, current characteristics, excitation sealing performance and excitation loss sealing performance of the to-be-tested electromagnetic valve can be tested through the electromagnetic valve performance test system, whether the tested electromagnetic valve performance is qualified or not is determined, blind maintenance and wrong maintenance are effectively avoided, spare parts of the main electromagnetic valve / test electromagnetic valve before being put into use can be tested, and the use reliability of the electromagnetic valve is effectively improved.

Description

technical field [0001] The invention relates to the technical field of nuclear power maintenance, in particular to a method for testing the performance of a solenoid valve used for AP1000 main steam and main feed water isolation valves. Background technique [0002] The main steam isolation valve of the second-generation nuclear power plant in China had an incident where the main steam isolation valve was closed due to the internal leakage of the main oil drain electromagnetic valve; at the same time, 90% of the main steam isolation valve could not be operated due to the refusal of the main oil drain electromagnetic valve and the test electromagnetic valve. Stroke test. The reason is analyzed as follows: when the solenoid valve is repaired, after replacing the O-ring, the spring force of the solenoid valve is not set properly during the assembly process. If the spring force is too large, the solenoid valve will refuse to move. If the spring force is too small, the solenoid v...

AI Technical Summary

Problems solved by technology

[0004] Since the pressure parameters and power level of the solenoid valve control system on the main steam isolation valve of the domestic second-generation semi-nuclear power plant are much lower than those of the AP1000 main steam and main feedwater isolation valve hydraulic control system, the main steam isolation valve of the second-generation domestic nuclear power plant The test method does not apply to the solenoid valve performance test of AP1000 main steam and main feed water isolation valves

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