CN203644525U

CN203644525U - Breakdown-proof structure of high-voltage framework

Info

Publication number: CN203644525U
Application number: CN201320827021.1U
Authority: CN
Inventors: 毛忠生; 顾晓娟; 王凤岭
Original assignee: TIANJIN SPARKTRONIC AUTOMOBILE ELECTRONIC CO Ltd
Current assignee: TIANJIN SPARKTRONIC AUTOMOBILE ELECTRONIC CO Ltd
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2014-06-11
Anticipated expiration: 2023-12-16

Abstract

The utility model relates to a breakdown-proof structure of a high-voltage framework. The breakdown-proof structure is characterized in that breakdown-proof groove structures are added to the two side end faces of the high-voltage framework which is provided with a secondary winding coil, so that high voltages of a secondary winding are prevented from creeping to a primary winding inside along the end faces of the high-voltage framework, and each breakdown-proof groove structure is composed of one or more circles of protruding edges. The breakdown-proof structure has the advantages that through the one or more circles of protruding edges on the end faces of the high-voltage framework, the creepage surface distance is increased, turning frequency when creepage breakdown happens is increased, the combination condition of potting compound and the end faces of the framework is improved, and the problem that the high-voltage end framework end faces are subjected to creepage breakdown is avoided; the breakdown-proof structure can be easily achieved in the overall product design, only the framework design structure needs to be changed, materials do not need to be changed, and the failure mode of creepage along the framework end faces is avoided without cost being increased.

Description

The anti-breakdown structure of a kind of high pressure skeleton

Technical field

The utility model relates to transformer device structure, and particularly the anti-breakdown structure of a kind of high pressure skeleton, designs by high pressure skeleton structure, prevents that high voltage is creepage to inner low-voltage coil along high pressure skeleton end face.

Background technology

In high-tension transformer product, high pressure winding is one of modal failure mode to puncturing between low pressure winding.Wherein, the low pressure winding that high voltage crawls toward inner along the end face of high pressure winding is again that maximum forms that punctures occurs, and this type of punctures the long-term design of perplexing high-tension transformer.For solving this failure mode, generally take to improve Skeleton Table surface state, the measures such as the amalgamation of raising potting compound and framework material, the thing followed is the significantly rising of cost.A kind of solution of economy is joint demand in the industry.

Summary of the invention

In view of the deficiency of prior art existence, the utility model provides a kind of high pressure skeleton anti-breakdown structural design scheme, that scheme can meet design requirement, do not increase cost, by high pressure skeleton structure, prevent that high voltage is creepage to inner low-voltage coil along high pressure skeleton end face.

The utility model for achieving the above object, the technical scheme of taking is: the anti-breakdown structure of a kind of high pressure skeleton, it is characterized in that: the both sides end face at the high pressure skeleton that is wound with secondary winding coil increases anti-breakdown groove structure, in order to the high voltage that prevents secondary winding along the high pressure skeleton end face inner armature winding that crawls toward.

Anti-breakdown groove structure is made up of single-turn or multi-turn fin.

The beneficial effects of the utility model: by increase by circle or a multi-turn fin at high pressure skeleton end face, extend creepage surface distance, increase the creepage turnover number of times puncturing while generation, improve the combination situation between potting compound and skeleton end face simultaneously, avoid the creepage effect puncturing of high-pressure side skeleton end face to reach.

The utility model is easily realized in product global design, only needs to change frame design structure, does not need to change material, need not increase cost completely and just can solve the failure mode creepage along skeleton end face.

Brief description of the drawings

Fig. 1 is winding end view drawing of the present utility model;

Fig. 2 is the utility model winding terminal profile;

Fig. 3 is this high pressure skeleton schematic three dimensional views.

In figure: 1. secondary winding, 2. armature winding, 3. high pressure skeleton, the anti-breakdown groove structure of 3-1..

Embodiment

Understand the utility model for clearer, describe in conjunction with the accompanying drawings and embodiments the utility model in detail:

As shown in Figure 1 to Figure 3, the anti-breakdown structure of high pressure skeleton, comprise high pressure skeleton, increase anti-breakdown groove structure 3-1 at the both sides end face of the high pressure skeleton 3 that is wound with secondary winding 1 coil, in order to the high voltage that prevents secondary winding 1 along the high pressure skeleton 3 end faces inner armature winding 2 that crawls toward.

Anti-breakdown groove structure 3-1 is made up of single-turn or multi-turn fin.

Only need in the time of design, increase the fin structure of a circle or multi-turn at secondary winding skeleton end face, just can avoid high pressure to puncture along the creepage of skeleton end face.

According to the above description, can realize scheme of the present utility model in conjunction with art technology.

Claims

1. the anti-breakdown structure of high pressure skeleton, it is characterized in that: the both sides end face at the high pressure skeleton (3) that is wound with secondary winding (1) coil increases anti-breakdown groove structure (3-1), in order to the high voltage that prevents secondary winding (1) along high pressure skeleton (3) the end face inner armature winding (2) that crawls toward.

2. the anti-breakdown structure of a kind of high pressure skeleton as claimed in claim 1, is characterized in that: anti-breakdown groove structure (3-1) is made up of single-turn or multi-turn fin.