CN201984942U

CN201984942U - Transformer compressing device

Info

Publication number: CN201984942U
Application number: CN2011200310372U
Authority: CN
Inventors: 王小龙
Original assignee: Zhangjiagang Shazhou Special Transformer Manufacturing Co Ltd
Current assignee: JIANGSU TIANXIANG ENERGY SAVING SCIENCE & TECHNOLOGY CO., LTD.
Priority date: 2011-01-30
Filing date: 2011-01-30
Publication date: 2011-09-21
Anticipated expiration: 2021-01-30

Abstract

The utility model discloses a transformer compressing device, which comprises a compressing cap fixed with a compressing cap bolt, a compressing outer cylinder with an inner cavity capable of being communicated with the outside through an opening formed at the top of the compressing outer cylinder, and an elastic element capable of extruding the compressing outer cylinder toward a transformer body coil, wherein the bottom of the compressing cap extends into the inner cavity of the compressing outer cylinder, and one end of the elastic element is butted against the bottom wall of the inner cavity of the outer cylinder and the other end is butted against the bottom of the compressing cap. The compressing outer cylinder is compressed on transformer body coil under the elastic action, so that in case of short circuit, the rebound action force of the transformer body coil is absorbed by the elastic element, which can prevent the transformer body coil or the compressing device from damage, and avoid the turn-to-turn displacement or the damage of the turn-to-turn insulating material due to rebound of the transformer body coil.

Description

A kind of transformer hold down gag

Technical field

The utility model relates to the transformer hold down gag

Background technology

When transformer meets with sudden short circuit, the transformer body coil can shrink the back bounce-back, this bounce-back might cause device body coil to damage, so need to use hold down gag compactor body coil, existing transformer hold down gag, adopt the fixing nail of pressing to be pressed on the end face of transformer body coil, when device body coil rebounds like this, having bigger active force acts on the compacting part, cause the damage of device body coil or compacting part easily, and deflection takes place in device body coil position after bounce-back easily, forms the turn-to-turn changing of the relative positions thus and causes the turn-to-turn friction phenomenon easily, causes the damage of turn-to-turn insulation material

Summary of the invention

The reaction force that the purpose of this utility model provides in the time of limitedly preventing the transformer body coil short causes device body coil or installs the transformer hold down gag that self damages.

For achieving the above object, the technical solution adopted in the utility model is: a kind of transformer hold down gag, described device comprises that the top has the outer shell that compresses on the described transformer body coil of being pressed on of the opening end face, the bottom puts in described and compresses bearing down on one in the outer shell open top, level is passed in and is used for fixing the described nut that bears down on one that bears down on one in the described top of bearing down on one, can be with the described elastic component that compresses outer shell towards described transformer body coil end face direction extruding, described compress that outer shell has can be by described open top and the outside inner chamber that is connected, described elastic component one end pushes against on described inner chamber diapire, and the other end pushes against the described bottom of bearing down on one.

Because the utilization of technique scheme, the utility model compared with prior art has following advantage: by fixing bear down on one to compress be arranged in the elastic component that compresses the outer shell inner chamber, compress outer shell and compressed the transformer body coil by elastic member presses, the active force of device body coil bounce-back can be absorbed by elastic component during short circuit like this, transformer body coil or insulation compacting part can not damage, can deflection after the device body coil bounce-back simultaneously, turn-to-turn is not easy to produce changing of the relative positions friction, and the turn-to-turn insulation material can not damage.

Description of drawings

Accompanying drawing 1 is looked cross-sectional schematic for master of the present utility model.

Embodiment

Further set forth structure of the present utility model below in conjunction with accompanying drawing.

Referring to shown in Figure 1, compressing that outer shell 2 has can be by self open top and the extraneous inner chamber that is connected, in compressing outer shell 2 inner chambers, elastic component 3 is set, the interior wall sidewall that compresses outer shell 2 can limit the displacement that elastic component 3 can the occurred level direction, nut 5 levels of bearing down on one are passed in 4 the top of bearing down on one and are used for fixing the position of bearing down on one, bear down on one 4 bottom puts within it by the open top that compresses outer shell 2 and compresses elastic component 3 in the chamber, in Fig. 1,4 the radial dimension of bearing down on one equates with the internal diameter size that compresses outer shell 2 inner chambers, bear down on one like this and 4 can better compress and fix elastic component 3, elastic component 3 is beared down on one after 4 compressions, generation will compress the extruding force of outer shell 2 towards the extruding of transformer body coil 1 direction, to compress outer shell 2 is pressed on the transformer body coil 1, during the transformer sudden short circuit, transformer body coil 1 shrinks the back bounce-back, when transformer body coil 1 shrinks, elastic component 3 elongations, compressing outer shell 2 still is pressed on the transformer body coil 1, produce towards the bigger impulsive force that compresses outer shell 2 during 1 bounce-back of transformer body coil, at this moment, elastic component 3 absorbs this impulsive force and shrinks and played cushioning effect, avoid transformer body coil 1 or compressed the damage of outer shell 2, and because elastic component 3 has certain thrust, transformer coil 1 turn-to-turn self can not impact because of violent short-circuit force effect the changing of the relative positions takes place, and has avoided the friction damage of the turn-to-turn insulation material that the changing of the relative positions causes

Claims

1. transformer hold down gag, it is characterized in that: described device comprises that the top has the outer shell that compresses on the described transformer body coil of being pressed on of the opening end face, the bottom puts in described and compresses bearing down on one in the outer shell open top, level is passed in and is used for fixing the described nut that bears down on one that bears down on one in the described top of bearing down on one, can be with the described elastic component that compresses outer shell towards described transformer body coil end face direction extruding, described compress that outer shell has can be by described open top and the outside inner chamber that is connected, described elastic component one end pushes against on described inner chamber diapire, and the other end pushes against the described bottom of bearing down on one.