Epoxy potting method for insulation box on end portion of electric generator

Abstract

The invention provides an epoxy potting method for an insulation box on an end portion of an electric generator. The method includes the steps of closing a connector through the mica insulation box and a tool, sealing the seam between the mica insulation box and the tool through epoxy putty, forming epoxy injection holes in the mica insulation box in advance, injecting potted epoxy into the epoxy injection holes through an epoxy potting device, solidifying the potted epoxy at the room temperature, and enabling the mica insulation box and the potted epoxy to form a whole after the tool is removed. The method overcomes the detects in the prior art, the insulation box obtained through the method is reliable in performance and simple in structure, production efficiency can be improved, labor intensity can be lowered, and the insulation effect is ensured.

Description

technical field [0001] The invention relates to a method for pouring glue into an insulating box at the end of a generator, which can be used for sealing and insulating the connection part of a ball joint copper bar at the end of a generator stator winding, and belongs to the technical field of generator stator assembly. Background technique [0002] At present, the stator windings of large turbogenerators generally use basket windings or stacked windings. In order to facilitate processing and insulation, each coil is composed of two wire bars, which are placed in the upper and lower layers of different slots respectively. The straight line of the upper and lower coils Part of it is buried in the groove, and after the end is out of the groove, it is connected to the end of the generator through joints through headgear or welding. The adjacent joints have sufficient insulation capacity, and a certain amount of insulating material will be wrapped around the joints. [0003] T...

AI Technical Summary

Problems solved by technology

[0003] Traditionally, the insulation at the end joints of the stator winding is usually wrapped with mica tape and baked and solidified. As the end of the stator winding of the generator is connected with the ball joint and the conductive bar, the shape of the connection structure is more complicated. If the mica tape is still used The wrapping insulation method not only needs to wrap more layers of mica tape, but also because the shape of the connection structure of the end wire bar is more complicated, wrapping is more difficult, the labor intensity of the operator is high, and the wrapping quality is poor, not only the production efficiency Low, and overall poor insulation

The limitations of the traditional wrapping process affect the production of turbo generators in many ways

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