Polishing method of insulating mat for suspension type water-turbine generator set

Abstract

The invention discloses a polishing method of an insulating mat for a suspension type water-turbine generator set, and belongs to the technical field of water-turbine generators. The polishing methodof the insulating mat for the suspension type water-turbine generator set comprises the following steps of using a cleaning solution for cleaning the surface of the insulating mat; using a permanent pen for marking an area to be polished on the surface of the insulating mat, wherein an ink mark of the permanent pen is permeated into the insulating mat from top to bottom; using abrasive paper for polishing the area to be polished, wherein the polishing depth is the permeating depth of the ink mark of the permanent pen; checking and judging the flatness of the surface of the insulating mat; andif the surface of the insulating mat is not flat, repeating the grinding step until the surface of the insulating mat is polished to be flat. The problem that the polishing flatness cannot be ensureddue to inaccuracy of a thickness measurement method in existing polishing is solved.

Description

technical field [0001] The invention relates to the technical field of suspended hydroelectric generators, in particular to a method for grinding insulating pads of suspended hydroelectric generators. Background technique [0002] Suspended hydro-generator sets generally add a layer of insulating pad between the mirror plate and the thrust head. The common reason is that the thickness of the insulation pad is uneven. Zhang Xingfu disclosed the uniform thickness of the insulation pad in the paper "A Case Study of the Axis Treatment of Vertical Suspended Units" published in the journal "Jianghuai Water Conservancy Science and Technology" in the fourth issue of 2011. The influence of degrees on the swing of the axis. [0003] The uneven thickness of the insulating pad affects the swing, and the method of dealing with the uneven thickness of the insulating pad in the prior art is generally to use iron abrasive cloth to scrape the relatively thick part of the insulating pad, and...

AI Technical Summary

Problems solved by technology

[0003] The uneven thickness of the insulating pad affects the swing, and the method of dealing with the uneven thickness of the insulating pad in the prior art is generally to use iron abrasive cloth to scrape the relatively thick part of the insulating pad, and generally use an outer micrometer after scraping the insulating pad Or a vernier caliper to measure the thickness after grinding, but most of these measuring tools cannot reach the position to be measured, resulting in large measurement errors, and this work often requires experienced masters to complete, not only It takes a lot of time, resulting in low efficiency of insulating pad grinding, and it cannot be mastered by the majority of employees.

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