Method and device for treating stator of large wind turbine with insulating varnish and device for baking insulating varnish on stator

Abstract

The invention provides a method and device for treating a stator of a large wind turbine with insulating varnish and a device for baking the insulating varnish on the stator. The method is characterized by adopting the process combining integral horizontal type vacuum pressure impregnation and rotary baking to treat the stator of the large permanent magnet direct-drive wind turbine with insulating varnish, wherein the step of treating the stator with insulating varnish is as follows: sleeving the stator of the wind turbine on a false shaft, then placing the false shaft on a false shaft supporting rotating mechanism in a baking oven, driving the false shaft to rotate via the false shaft supporting rotating mechanism and furthering driving the stator to rotate to realize horizontal type rotary baking of the stator, wherein the false shaft is parallel to the ground along the direction of the stator core slot. By utilizing the process combining vacuum pressure impregnation and rotary baking, the stator of the large permanent magnet direct-drive wind turbine is treated with the insulating varnish, the functions of the process completely conform to the requirements of production insulation treatment, and the loss of the insulating varnish in the baking process is reduced, the amount of the varnish on the surfaces of the windings is ensured and the process time and energy consumptionare simultaneously reduced while ensuring the filling property of the insulating varnish on the stator windings.

Description

technical field [0001] The invention relates to a method and device for processing motor parts, in particular to a method and device for insulating and dipping a stator of a large-scale permanent magnet direct drive wind power generator. It is mainly used in the process of impregnating the stator insulation of the megawatt permanent magnet direct drive wind power generator. Background technique [0002] In order to ensure the insulation performance of the motor, it is necessary to insulate the stator and rotor of the motor when making the stator and rotor of the motor. One of the most important procedures for the insulation treatment of the stator and rotor of the current motor is to carry out the insulation dipping treatment; the so-called insulation Impregnation treatment is to put the finished stator and rotor into a container with insulating varnish to hang the paint, and then bake the stator and rotor covered with insulating varnish, so that the insulating varnish is cu...

AI Technical Summary

Problems solved by technology

[0005] 1. Because the viscosity of the winding dipping varnish will decrease before baking and curing, if the static baking method is adopted, the insulating varnish with reduced viscosity will be lost due to gravitational trickle, resulting in insufficient filling and surface coating of the insulating varnish winding

In order to make up for this shortcoming, it is often necessary to repeat two or more dipping + static baking treatments, which increases the consumption of materials and kinetic energy and greatly increases the process time

[0006] 2. During the static baking process, a large number of paint bumps formed by the dripping of insulating varnish will be produced on the winding surface, which not only affects the subsequent assembly of the stator, but also poses a safety hazard to the operation of the motor; if the paint bumps need to be cleaned and polished, it is easy to cause Insulation damage, affecting product quality

[0007] Therefore, it is very necessary to improve the insulation and varnish treatment of the stator of the large-scale permanent magnet direct-drive wind power generator. No report on this technical content has been found through the search of domestic patent documents.

Images