Overall sleeved structure of transformer body

Abstract

The invention relates to the technical field of transformers, in particular to an overall sleeved structure of a transformer body. The overall sleeved structure of the transformer body comprises an inner coil and an iron core. A sleeved hard paper tube is arranged between the inner coil and the iron core, a plurality of layers of supporting strips and surrounding screens are mounted outside the sleeved hard paper tube, a coil paper tube is arranged outside the mounted supporting strips and the surrounding screens, and the inner coil is wound outside the coil paper tube. A transformer body supporting plate is arranged below the sleeved hard paper tube, the inner diameter of the transformer body supporting plate is matched with that of the sleeved hard paper tube, and the transformer body supporting plate extends to the outermost layer of the transformer body in the axial direction from the position below the sleeved hard paper tube. According to the overall sleeved structure of the transformer body, the sleeved hard paper tube is arranged between the inner coil and the iron core, the inner diameter of the transformer body supporting plate is matched with that of the sleeved hard paper tube, in this way, the strips and the surrounding screens arranged between the inner coil and the iron core can be assembled first, the overall sleeved effect is achieved, the strips and the surrounding screens can be supported by the supporting plate, the manufacturing technology is greatly simplified through the overall sleeved technology, and thus product reliability is guaranteed.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an integral casing structure of a transformer body. Background technique [0002] As the power grid has higher and higher requirements for power supply quality, higher requirements have been put forward for the stability of power equipment. The transformer is one of the key power equipment in the grid, and the stability of the transformer determines the stability and quality of the grid power supply. Among the various assessments of transformers, the assessment of short-circuit resistance of transformers is the most demanding. The transformer damage caused by insufficient short-circuit capacity of the transformer will not be recoverable in a short period of time, and the impact will be very large. [0003] The whole package process of the transformer body can greatly improve the short-circuit resistance of the transformer, and the specific structure and process of various ...

AI Technical Summary

Problems solved by technology

However, for some innermost coils, the insulation level is relatively high, and the distance between the coil and the iron core is relatively large. When the overall assembly of the body is put into the iron core, it is found that the support effect of the coil and the iron core and the surrounding screen are very poor, which will cause the body The stability of the transformer becomes poor, and finally seriously affects the short-circuit resistance of the transformer

Images