Motor bearing temperature anomaly processing method for nuclear reactor main pump

Abstract

The invention relates to the technical field of a nuclear power plant reactor main pump, in particular to a motor bearing temperature anomaly processing method for a nuclear reactor main pump, comprising the following steps: S1, presetting the alarm temperature of a motor bearing as 72 to 80 degree centigrade; S2, collecting the actual temperature of the motor bearing, and monitoring the actual temperature of the motor bearing by a plurality of temperature measuring probes mounted on the thrust pad of the motor bearing; S3, performing analysis and determination, comparing the actual temperature with the alarm temperature, replacing the motor after the motor stops operating if the actual temperature is greater than the alarm temperature; if the actual temperature is less than the alarm temperature, performing determination according to the temperature fluctuation or temperature deviation of the actual temperature to repair or replace the motor. By comparing the preset alarm temperaturewith the actual temperature, the method is used to provide an accurate judgment standard for motor bearing temperature anomaly processing, saves labor and maintenance costs, and improves the safety ofthe safe operation of the nuclear reactor main pump.

Description

technical field [0001] The invention relates to the technical field of reactor main pumps of nuclear power plants, and in particular provides a method for processing abnormal temperature of motor bearings of nuclear reactor main pumps. Background technique [0002] The main pump of a domestic nuclear power plant reactor is a 100-type main pump, and the main pump motor of a 100-type nuclear reactor is a certain type of motor produced by the French JSPM company and the domestic ADJV company (a joint venture between JSPM and Dongfang Electric). The main pump motor of Type 100 nuclear reactor is a vertical squirrel-cage type, single-speed three-phase induction motor with a voltage of 6.6kV, a rated power of 6500kW, and a rated speed of 1485rpm. [0003] The upper part of the motor of the 100-type nuclear reactor main pump is equipped with a combined two-way Kingsbury type thrust bearing and two radial bearings. The radial bearings are placed above and below the thrust bearings,...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for handling abnormal temperature of the motor bearing of the main pump of the nuclear reactor, aiming at solving the technical problem that the abnormal processing cost is too high when the motor bearing of the 100-type nuclear reactor main pump fails due to temperature in the prior art

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