Interphase partition board for three-dimensional roll-core transformer and manufacturing method of interphase partition board

Abstract

The invention relates to an interphase partition board for a three-dimensional roll-core transformer and a manufacturing method of the interphase partition board. The interphase partition board comprises partition board bodies and stays, wherein the partition board bodies are in a back-to-back structure formed by two right-angle C-shaped frames; and the stays are arranged between the two right-angle C-shaped frames. The method comprises the following steps: preparing paper boards with sufficient sizes and reserving the lengths of the upper end surfaces and the lower end surfaces; removing semi-circular gaps at the positions of the upper end surfaces and the lower end surfaces; bending each paper board into one right-angle C-shaped frame according to the reserved size; and splicing the two right-angle C-shaped frames through the stays and an insulating cement in a back-to-back manner to form the interphase partition board. According to the interphase partition board, the insulation distance between phases of the transformer is reduced; the electrical distances from the end parts of coils to upper and lower iron yokes are reduced; the breakdown voltage of an oil gap is improved; meanwhile, the oil flow of the transformer is unblocked; the dead pocket of the oil flow is avoided; and the interphase partition board is convenient to install and simple to operate.

Description

technical field [0001] The invention relates to a manufacturing technology of a three-dimensional wound core transformer, in particular to a three-dimensional wound core transformer phase partition and a manufacturing method thereof. Background technique [0002] The three-dimensional wound core transformer is another revolutionary transformer following the insert type and planar wound core transformer. It is a new type of transformer with more reasonable structure, better performance and more significant energy saving. Electric transformers have been widely recognized in the market. [0003] The three-dimensional wound core transformer breaks through the traditional design of the three-phase planar wound core through the analysis of the magnetic circuit. The circuit is symmetrical, the three-phase coils are arranged in the shape of "pin", and a central oil circuit is formed between the coils, the reluctance is greatly reduced, the excitation current, and the no-load loss a...

AI Technical Summary

Problems solved by technology

[0004] At present, this three-dimensional wound core transformer technology has become mature, but the three-dimensional wound core transformer uses rectangular phase partitions (such as image 3 As shown), the distance between the high-voltage coil and the high-voltage coil is large, and the electrical distance from the end of the high-voltage coil to the upper and lower iron yokes is large, resulting in uneven field strength at the end

Images