CN202034201U

CN202034201U - Insulated combined cushion block structure capable of increasing creepage distance of dry-type transformer

Info

Publication number: CN202034201U
Application number: CN2011201388868U
Authority: CN
Inventors: 聂莉雅; 张伟红; 李海燕
Original assignee: Baoding Tianwei Group Co Ltd
Current assignee: Baoding Tianwei Baobian Electric Co Ltd
Priority date: 2011-05-05
Filing date: 2011-05-05
Publication date: 2011-11-09
Anticipated expiration: 2021-05-05

Abstract

The utility model relates to an insulated combined cushion block structure capable of increasing the creepage distance of a dry-type transformer, and the insulated combined cushion block structure belongs to the technical field of transformers. The technical scheme includes that the insulated combined cushion block structure comprises a plurality of cushion blocks in different lengths and different widths, the cushion blocks are classified into two types, namely larger cushion blocks (1) and smaller cushion blocks (2), and the larger cushion blocks and smaller cushion blocks are arranged in a staggered and sawtoothed manner. The utility model has the beneficial effects that compared with the larger cushion blocks, the smaller cushion blocks are simple to process and also save the material cost, and above all, the larger cushion blocks and the smaller cushion blocks are used in combination for increasing the creepage distance between coil cakes; experiments prove that the insulated combined cushion block structure increases the anti-impact capacity of windings on the basis of not increasing the product cost, and furthermore, the insulation performance of products is improved.

Description

A kind of dry-type transformer increases the insulation combined pad structure of creepage distance

Technical field

The utility model relates to the insulation combined pad structure that a kind of dry-type transformer increases creepage distance, belongs to the transformer technology field.

Background technology

General transformer disc coil intersegmental is that the cross-over block by one or more same widths and length combines, and adopts this length cross-over block all identical with width, between the size of its creepage insulation distance and line cake apart from identical; Verify between the line cake of this kind structure through multiple shock test to be easy to generate electric discharge phenomena, influence the insulation property of product.

The utility model content

The purpose of this utility model provides the insulation combined pad structure that a kind of dry-type transformer increases creepage distance, has effectively increased creepage distance, and can guarantee the product insulation property, solves the problems referred to above that background technology exists.

The technical solution of the utility model is:

A kind of dry-type transformer increases the insulation combined pad structure of creepage distance, comprise two kinds of several cushion blocks that length is different with width, two kinds of cushion blocks varying in size of volume just, bulky a kind of cushion block is referred to as than big cushion block, a kind of cushion block that volume is little is referred to as than small cushion block, arrange indentation at interval than big cushion block with than small cushion block.

This than big cushion block, than the small cushion block combining form, the creepage distance of cushion block has increased much than the creepage distance of common combinations cushion block.

Good effect of the present utility model is: with respect to than big cushion block, not only process simply than small cushion block, and saved material cost, the most important thing is and will be used in combination than big cushion block with than small cushion block, increased the creepage distance between the line cake; On the basis that does not increase product cost, strengthen the impact resistance of winding through this kind of verification experimental verification structure, and then improved the insulation property of product.

Description of drawings

Fig. 1 is the utility model embodiment schematic diagram;

Fig. 2 is the utility model embodiment schematic side view;

Fig. 3 the utility model embodiment uses schematic diagram;

Among the figure: than small cushion block 1, than big cushion block 2, stay 3.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further by embodiment.

A kind of dry-type transformer increases the insulation combined pad structure of creepage distance, comprises two kinds of several cushion blocks that length is different with width, and two kinds of cushion blocks are referred to as to arrange indentation at interval than big cushion block with than small cushion block than big cushion block 1 with than small cushion block 2.This than big cushion block, than the small cushion block combining form, the creepage distance of cushion block has increased much than the creepage distance of common combinations cushion block.

With reference to accompanying drawing 3, specification than the placement of the adjacent line cake of big cushion block, in the middle of will being placed on than small cushion block and than big cushion block is interspersed, will be through on the stay 3 than big cushion block 2 at last again.

Claims

1. a dry-type transformer increases the insulation combined pad structure of creepage distance, it is characterized in that comprising two kinds of several cushion blocks that length is different with width, two kinds of cushion blocks varying in size of volume just, bulky a kind of cushion block is referred to as than big cushion block (1), a kind of cushion block that volume is little is referred to as than small cushion block (2), arrange indentation at interval than big cushion block with than small cushion block.