Nuclear power station shaft seal main pump motor rotor core pressing and shrinkage fit process method and process equipment thereof

Abstract

The invention relates to a nuclear power station shaft seal main pump motor rotor iron core pressing and shrinkage fit process method and process equipment thereof. A core tire (1) is installed and adjusted, and the diameter size and perpendicularity of the core tire (1) are detected; an outer diameter micrometer is used for measuring the upper portion and the middle portion of the core tire (1); and a process equipment main body is formed by combining an inner tube and an outer tube, and the inner tube structurally comprises a core tube (1), a positioning key (7), a bolt (18), a groove-shaped rod (16), a pre-pressing plate (17) and a lower pressing plate (19). According to the invention, the pressing quality and the shrinkage fit quality of the rotor iron core (3) are ensured, and the quality assessment indexes of the stator and rotor magnetic centers of the motor and the rotor iron core (3) comprise rotor punching sheet tightening amount, iron core wave degree, length deviation of each section of iron core, total length deviation of the iron core, geometric center deviation, groove size deviation, and degree of attachment between a rotor pressing plate and a rotor punching sheet after shrinkage fit.

Description

Technical field: [0001] The invention relates to a process method of pressing and shrinking the iron core of the rotor core of the shaft seal main pump motor of a nuclear power plant and its process equipment. Background technique: [0002] The rotor core of the main pump motor of a nuclear power plant is an important component of the rotor. Its performance is to realize the conversion of electromagnetic energy, and to generate rotating mechanical energy through electromagnetic induction. The manufacturing quality of the rotor core is the basis for the safe operation of the motor. The rotor The quality assessment indicators of the iron core include the tightness of the rotor punching, the waviness of the iron core, the length deviation of each segment of the iron core, the total length deviation of the iron core, the geometric center deviation, the groove size deviation, and the degree of tightness between the rotor pressing plate and the rotor punching after heat sleeve etc...

AI Technical Summary

Problems solved by technology

[0002] The rotor core of the main pump motor of a nuclear power plant is an important component of the rotor. Its performance is to realize the conversion of electromagnetic energy, and to generate rotating mechanical energy through electromagnetic induction. The manufacturing quality of the rotor core is the basis for the safe operation of the motor. The rotor The quality assessment indicators of the iron core include the tightness of the rotor punching, the waviness of the iron core, the length deviation of each segment of the iron core, the total length deviation of the iron core, the geometric center deviation, the groove size deviation, and the degree of tightness between the rotor pressing plate and the rotor punching after heat sleeve etc. In the past, these quality indicators were often controlled very unsatisfactorily, and there were often quality problems such as iron core looseness, rotor pressure plate separation, iron core tilt, and large center deviation. Therefore, in order to overcome these stubborn problems, it is necessary to formulate reliable and correct Process method, design corresponding process equipment, strictly control the operation process of rotor core pressure and heat sleeve, and improve the manufacturing quality level

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