A Processing Technology of Transformer Low-Voltage Coil

Abstract

The invention discloses a processing technology of a transformer low-voltage coil. The processing technology comprises the following steps: firstly winding a coil, inserting silica gel plates which are equal to a bracing bar in thickness into bare air passages at both end parts of the wound coil, winding an insulating material on the surface of the coil, sending the coil to a curing oven to be cured, cooling, using a glass tape to fill a gap between the silica gel plates at the two end parts of the coil tightly, pouring the molten resin to the end parts of the coil to seal the coil, after the resin is cured, pulling up the silica gel plates, shaping and polishing the coil to obtain a finished product. According to the processing technology disclosed by the invention, the silica gel plates are arranged at the two end parts of the air passage, the glass tape is used to fill the gap between the silica gel plates to seal the two end parts of the air passage, and the resin is poured to seal the ends of the coil, so that the decrease of the heat dissipation performance as the resin blocks the inside of the air passage can be prevented; after end sealing, the silica gel plates are removed, and a gap is reserved to be communicated with the outside to enable the air passage to be communicated with the outside, so as to greatly improve the heat dissipation performance of the low-voltage coil.

Description

technical field [0001] The invention relates to a transformer in the electrical system field, in particular to a processing technique for a low-voltage coil of a transformer. Background technique [0002] When the low-voltage coil of the transformer is wound, a stay is generally added every few turns, and the coil should bypass the stay when the coil continues to be wound, so that an air passage for heat dissipation is formed in the coil. After the coil is wound, the ends of these airways need to be sealed with resin. The end seal in the prior art simply uses melted resin to pour into the air channel at the end position, but this will cause the inside of the air channel to be filled with resin, resulting in a decrease in the heat dissipation performance of the low-voltage coil. Contents of the invention [0003] In order to solve the problem that the resin will be filled into the air channel in the existing end sealing process, which will lead to the reduction of the heat...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the resin will be filled into the air channel in the existing end sealing process, which will lead to the reduction of the heat dissipation performance of the low-voltage coil, the present invention provides a processing technology for the low-voltage coil of the transformer. Through this process, only the low-voltage coil The air passage opening at the end is sealed without affecting the heat dissipation performance of the internal air passage