Method for improving insulation value of ship brushless quadrupole alternating-current diesel power generator to shell

Abstract

The invention provides a method for improving an insulation value of a ship brushless quadrupole alternating-current diesel power generator to a shell, which specifically comprises the following steps: opening or disassembling a connecting terminal cover of the power generator and a heat radiation window; cleaning the surfaces of a stator, a rotor, an excitation winding, a rectifier and an automatic pressure-regulating device circuit board of the power generator and a cable connecting terminal in a manner of blowing and spraying dried compressed air; wiping the surfaces of all the components with clean and dry cotton cloth; spray-washing the stator, the rotor, the excitation winding, the rectifier and the automatic pressure-regulating device circuit board of the power generator and the cable connecting terminal in different directions; keeping effective ventilation of the power generator and naturally airing the components; and installing the connecting terminal cover and the heat radiation window of the power generator. The method has the benefits that not only is the insulating effect of the components inside the power generator to the shell improved, but also the maintenance period can be effectively shortened, the maintenance efficiency is improved, and the cost is saved.

Description

technical field [0001] The invention relates to a method for improving the insulation value of the ship's brushless four-pole AC diesel generator to the shell Background technique [0002] Marine brushless four-pole AC diesel generators are generally installed in the cabin. The working environment has the characteristics of high humidity, dust and dust, which makes the winding and other components easy to be damp, and dust is easy to adhere to the stator winding and rotor winding. In the state of heavy load and continuous operation, the temperature of the stator, rotor and rectifier is very high, and the particles such as dust and dust attached to the stator and rotor windings will conduct electricity under high temperature conditions, resulting in a decrease in the insulation between the stator and the motor casing. [0003] In this regard, according to the traditional method of improving the insulation value, it is necessary to disassemble the generator, take out the inner...

AI Technical Summary

Problems solved by technology

In the state of heavy load and continuous operation, the temperature of the stator, rotor and rectifier is very high, and the particles such as dust and dust attached to the stator and rotor windings will conduct electricity under high temperature conditions, resulting in a decrease in the insulation between the stator and the motor casing

[0003] In this regard, according to the traditional method of improving the insulation value, it is necessary to disassemble the generator, take out the inner stator and rotor winding of the generator, re-spray insulating paint, bake, and reinstall after baking and drying, but the disassembly work is difficult. It is carried out in a relatively narrow cabin. At the same time, the generator is easy to damage the coil during the disassembly process, and it is easy to slip or collide with other objects during hoisting and transportation.

The traditional method has a long period of implementation, low efficiency, high cost, and risks in construction