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Shield structure of transformer oil tank and mounting method thereof

A transformer oil tank and shielding structure technology, applied in the direction of transformer/inductor cooling, preventing/reducing unnecessary electric/magnetic influence, etc., can solve problems affecting product quality, difficult to clean, difficult to fuse, etc. slag, improve the quality of the fuel tank, and facilitate installation

Active Publication Date: 2013-09-04
SHANDONG POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When welding stainless steel and copper, the melting point of stainless steel is very different from that of copper, and the two are not easy to fuse, and the gap between the protective tube and the copper shield is prone to slag, which is difficult to clean and affects product quality.

Method used

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  • Shield structure of transformer oil tank and mounting method thereof
  • Shield structure of transformer oil tank and mounting method thereof

Examples

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Embodiment Construction

[0016] A transformer oil tank shielding structure, as shown in the figure, includes an oil tank, a copper shielding plate 4 is welded on the outside of the oil tank wall 3, a magnetic shielding plate 2 is installed on the outside of the copper shielding plate 4, and the copper shielding plate 4 around the magnetic shielding plate 2 There is a hole on it, and a pin 5 with a diameter of 12cm made of a low-magnetic material steel plate is inserted. One end of the pin 5 is welded to the wall 3 of the fuel tank, and the other end of the pin 5 is hung with a stainless steel protective tube 1 with a diameter of 45cm. The protective tube 1 has a hole with a diameter of 14cm at the corresponding position, and the other end of the pin 5 is welded with the stainless steel protective tube 1, and the protruding part of the pin 5 is ground flat. When making the pin, the length of the pin is determined according to the thickness of the copper shielding plate and the magnetic shielding plate.

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PUM

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Abstract

The invention discloses a shield structure of a transformer, in particular to a shield structure of a transformer oil tank and a mounting method of the structure. The shield structure comprises an oil tank, wherein a copper shield board is welded on the outer wall of the oil tank; and a magnetic shield board is arranged outside the copper shield plate; stainless steel protecting tubes are arranged at the periphery of the magnetic shield board; and the stainless steel protecting tubes are connected with the copper shield board at corresponding positions through pins. According to the shield structure of the transformer oil tank and the mounting method thereof, the problem that stainless steel is difficult to weld with copper when the stainless steel protecting tubes are connected with the copper shield plate can be effectively overcome; in addition, the shield structure is not easy to accumulate slag so as to bring convenience to mounting of the stainless steel protecting tubes, ensure the shield effect of the oil tank and improve the quality of the oil tank.

Description

technical field [0001] The invention relates to a shielding structure of a transformer, in particular to a shielding structure of a transformer oil tank and an installation method of the structure. Background technique [0002] In order to prevent the leakage flux from passing through the oil tank and causing the oil tank to heat up, copper shielding is usually welded on the tank wall of the transformer with relatively large magnetic flux leakage, and a magnetic shielding is installed on the copper shielding. Since the magnetic shielding plate is square, the edges are all corners, and the field strength at the corners is relatively large, which is prone to partial discharge. Therefore, in order to shield the corners of the magnetic shield, stainless steel protective tubes are usually welded around the magnetic shield, and the fuel tank wall has been The copper shielding plate is welded, and the stainless steel protective tube can only be welded on the copper shielding plate....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/14H01F27/36
Inventor 孙大伟徐富强张立国李太勇王喜亮王永刚
Owner SHANDONG POWER EQUIP
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