CN201336207Y

CN201336207Y - Interior grounding lead connection structure of transformer

Info

Publication number: CN201336207Y
Application number: CNU2009200009250U
Authority: CN
Inventors: 李素雅; 刘连兴; 王奎生; 周国顺; 黄仁旭; 边庆恺
Original assignee: Baoding Tianwei Group Co Ltd
Current assignee: Baoding Tianwei Group Co Ltd
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2009-10-28
Anticipated expiration: 2019-01-19

Abstract

The utility model discloses an interior grounding lead connection structure of a transformer, which comprises a fixed component, an interior grounding lead connecting plate, an interior grounding lead fastening component, a washer, a disc spring and a bolt. The fixed component is fixedly arranged on the inner side of a box body and is provided with inner threaded holes; the bolt matches with the inner threaded holes of the fixed component; the root part of the bolt is provided with a tool withdrawal groove; a through hole in the middle of the connecting plate is a threaded hole which matches with the bolt. When the interior grounding lead connection structure of the transformer is mounted, the bolt penetrates through the washer and the disc spring; the connecting plate is screwed into the tool withdrawal groove of the bolt; and the connecting plate, the washer and the disc spring are clamped in the tool withdrawal groove, thereby preventing the connecting plate, the washer and the disc spring from falling off when the bolt is mounted, and thus preventing the security risk caused by the falling of the fastening component to the transformer. The utility model has the advantages of simple structure, easy operation and high feasibility.

Description

The syndeton of the inner ground lead of transformer

One, technical field

The utility model relates to the syndeton of the inner ground lead of a kind of transformer.

Two, background technology

At present, the inner ground leads of some transformer customer requirements are not to draw by sleeve pipe but be connected to the case lid inboard with bolt.Connection request people for this inner ground lead generally adopt following syndeton: the fixture that internal thread hole is arranged in box inside suitable place weldering one, fix to clamp by the lug plate of securing members such as packing ring, butterfly spring and bolt then ground lead, have circular hole in the middle of the lug plate of ground lead, because of terminal operation all at the casing upside, careless slightly in the operating process, securing member will come off and enter device body inside, is quite loaded down with trivial details at the so little securing member of the inner searching of device body.And if do not recognize the securing member that comes off, may cause multipoint earthing fault between the iron core in somewhere and the folder, or form an office somewhere and put a little, transformer partial discharge is significantly increased, serious situation can cause transformer to puncture.In order to address the above problem, someone has done improvement to ground lead with lug plate, lug plate garden Kong Chu opens C type port, though can avoid the securing member obscission to a certain extent like this, but owing to fasteningly be subjected to the spatial limitation can be not oversize with bolt length, be difficult to control bolt and screw in back-out length, obscission also takes place unavoidably.

Three, summary of the invention

The utility model solves the above-mentioned problems in the prior art exactly, and the syndeton of the inner ground lead of transformer that securing members such as a kind of packing ring, butterfly spring no longer come off is provided.

For addressing the above problem, technical solution of the present utility model is: the syndeton of the inner ground lead of a kind of transformer, and it comprises and is fixed on brace and the securing member that box inside has the fixture of internal thread hole, inner ground lead: packing ring, butterfly spring and the bolt that is complementary with the fixture internal thread hole; The root of bolt has an escape, and the through hole in the middle of the lug plate is the screwed hole that is complementary with bolt.

Because the utility model has adopted such scheme, after penetrating packing ring and butterfly spring on the bolt, lug plate is screwed in the escape of bolt, escape with lug plate, packing ring and butterfly spring clip within it, no longer take place in the process of construction bolt, the obscission of lug plate, packing ring and butterfly spring, thus the potential safety hazard that comes off and bring avoided to transformer because of securing member.Its features simple structure, easy operating, feasibility is strong.

Four, description of drawings

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1 is a front view of the present utility model;

Fig. 2 is the vertical view of lug plate in the utility model;

Fig. 3 is the front view of bolt in the utility model.

Five, embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, present embodiment comprises and is fixed on brace 4 and the securing member that box inside has the fixture of internal thread hole, inner ground lead: packing ring 2, butterfly spring 3 and the bolt 1 that is complementary with the fixture internal thread hole.The root of bolt 1 has an escape 5, and the through hole in the middle of the lug plate 4 is the screwed hole that is complementary with bolt 1.After penetrating packing ring 2 and butterfly spring 3 on the bolt 1, lug plate 4 is screwed in the escape 5 of bolt 1.

Claims

1, the syndeton of the inner ground lead of a kind of transformer, it comprises and is fixed on brace and the securing member that box inside has the fixture of internal thread hole, inner ground lead: packing ring, butterfly spring and the bolt that is complementary with the fixture internal thread hole; It is characterized in that: the root of bolt has an escape, and the through hole in the middle of the lug plate is the screwed hole that is complementary with bolt.