Insulation manufacturing method of full hydrogen-cooled turbine generator stator parallel ring lead

A technology of turbogenerators and connecting loop leads, which is applied in the manufacture of motor generators, laying solid insulation, electrical components, etc., can solve the problem that it is difficult to achieve the service life of parallel loop lead wire insulation and affect the safety of full hydrogen-cooled turbogenerators Operation, affecting the insulation quality of stator parallel ring leads, etc., to achieve the effects of avoiding delamination, ensuring safety, and improving heat resistance

Inactive Publication Date: 2018-09-07
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Using the previous method to manufacture parallel ring lead insulation, there are easy air gaps and delamination between each layer of insulating material, between the insulating material and the copper bar, which seriously affects the quality of the stator parallel ring lead insulation, and it is difficult to achieve Design service life of parallel ring lead insulation, which in turn affects the safe operation of hydrogen-cooled turbogenerators

Method used

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  • Insulation manufacturing method of full hydrogen-cooled turbine generator stator parallel ring lead
  • Insulation manufacturing method of full hydrogen-cooled turbine generator stator parallel ring lead

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Embodiment Construction

[0017] The present invention is a method for manufacturing the lead wire insulation of the parallel connection ring of the stator of the all-hydrogen-cooled turbogenerator, which includes the following manufacturing steps:

[0018] a. Insulation material selection and wrapping process: Use a universal wrapping machine to enter the factory for wrapping, set the wrapping method of the universal wrapping machine to 1 / 2 overlapping winding, set the wrapping tension to 45N, fix the copper bar on the universal wrapping machine, and place the copper bar on the Brush 1 layer of adhesive on the surface, start the universal wrapping machine and wrap 25 layers of Tongma epoxy glass powder mica tape with a width of 25mm and a thickness of 0.14mm on the copper bar in a 1 / 2 overlapping wrapping method, and wrap Tongma epoxy glass For powder mica tape, brush 1 layer of adhesive on the outer surface after each layer is wrapped, and scrape off the excess adhesive on the insulating surface while...

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Abstract

The invention discloses an insulation manufacturing method of a full hydrogen-cooled turbine generator stator parallel ring lead. By virtue of improvement of a heat resistant level of an insulating material, a bundling method and improvement of a curing process, the insulation performance of the parallel ring lead is improved; and meanwhile, the bundling tension, curing temperature, heating and cooling speeds, heat preservation time, cooling stop temperature and other parameters and setting methods in the insulating manufacturing process of the parallel ring lead are stipulated. By adoption ofthe parallel ring lead manufactured in the invention, air gap and layering between the insulating material and a copper bar and between the insulating material layers can be avoided, the insulating quality of the parallel ring lead is ensured, the designed service life of the parallel ring lead is realized, and the operational reliability of the full hydrogen-cooled turbine generator is ensured.

Description

Technical field: [0001] The invention belongs to the technical field of steam turbine generator manufacturing, and in particular relates to a method for manufacturing stator parallel ring lead insulation of an all-hydrogen-cooled steam turbine generator. Background technique: [0002] The lead wires of the stator parallel rings of the all-hydrogen-cooled turbogenerator are composed of copper bars and insulation, and the cross-section of the copper bars is a rectangle. Parallel ring leads are one of the important parts of the stator of the full-hydrogen-cooled turbogenerator. Excellent insulation performance is the premise and guarantee for the safe operation of the generator. However, the insulation performance of parallel ring leads is often not determined by the performance of the insulation material itself, but by the wrapping method and curing process of the insulation material. Using the previous method to manufacture parallel ring lead insulation, there are easy air g...

Claims

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Application Information

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IPC IPC(8): H02K15/10
CPCH02K15/105
Inventor 王玉田潘延明隋银德刘仁瑞青晔倪苗苗黄玉周洋
Owner HARBIN ELECTRIC MASCH CO LTD
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