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Insulation restoration method for generator rotor magnetic pole

A technology of generator rotor and repair method, applied in the direction of laying solid insulation, etc., can solve problems such as inability to clean the interior of magnetic poles, problems in normal operation of power stations, and inability to completely solve problems, achieve good sealing effect, improve insulation level, improve The effect of insulating properties

Active Publication Date: 2012-01-04
CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During unit expansion, only the outside of the generator rotor magnetic poles can be fully cleaned, but the inside of the magnetic poles cannot be thoroughly cleaned. This cannot completely solve the problem fundamentally, and brings difficulties to the normal operation of the power station.

Method used

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Effect test

Embodiment Construction

[0034] A generator rotor magnetic pole insulation repair method, the repair method includes the following steps:

[0035] (1). Disassemble the assembled rotor pole coil, iron core and insulating parts. The disassembled insulating parts include main spacers, bushings, insulating plates, secondary spacers and gaskets;

[0036] (2). Check, clean and wash the disassembled parts separately, so that the dirt on each part is cleaned; the detailed steps of this step include: ①. Check all parts carefully; ②. Use a wire brush and an electrician's knife (or wood planer) to remove the aging insulation on the coil surface, the dirt inside and outside the iron core, the dirt inside and outside the main pad of the insulation, the dirt inside and outside the bushing of the insulation, and the coil fixing bracket. , until the adhering dust, carbon powder and other dirt are completely brushed off, especially when scraping off the paint residue on the main pad of the insulating part with an ele...

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Abstract

The invention discloses an insulation restoration method for a generator rotor magnetic pole. The method comprises the following steps of: (1) disassembling a rotor magnetic pole coil, a core and insulators which are assembled together; (2) checking, sorting out and washing each disassembled part to clean up dirt on each part; (3) painting insulating paint on the coil and the insulators respectively; (4) sleeving a part of insulators on the core, painting glue on the insulators, assembling the coil on the core and sealing a seam between the coil and the core by using the glue; (5) arranging the other part of insulators on the coil, sealing gaps on the two end parts of the coil and painting the glue on the insulators; (6) arranging a pressing tool on the assembled magnetic pole for pre-pressing, and cleaning up residual glue on the magnetic pole; and (7) performing standing, and loosening and taking the pressing tool down after the glue painted on the magnetic pole is cured. By the method, the overall insulation level of the generator rotor magnetic pole is improved.

Description

technical field [0001] The invention relates to an insulation repair method for a generator rotor magnetic pole, which is particularly suitable for repairing the insulation of a hydropower generator rotor magnetic pole. Background technique [0002] The generators of most hydropower stations in my country were designed and produced in the late 1960s. Due to the limited design and manufacturing process at that time, the insulation and sealing of the rotor magnetic poles of the designed generators were not ideal, and there were often low or no insulation of the rotors. , which seriously affected the normal operation of the hydropower station. Now take Gongzui Hydropower Station as an example to make a detailed analysis. [0003] Gongzui Hydropower Station is located in the Dadu River Basin in Sichuan Province. It was built in the 1960s. The power station is divided into a ground plant and an underground plant. The generators in the plant are manufactured by Dongfang Electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/10
Inventor 周晓东
Owner CHN ENERGY DADU RIVER REPAIR & INSTALLATION CO LTD
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