CN205542412U

CN205542412U - Built -in blast proof dry -type power capacitor of pressure

Info

Publication number: CN205542412U
Application number: CN201620092062.4U
Authority: CN
Inventors: 梁占东; 杨立文; 张红梅; 杜学清
Original assignee: Liaoning Yijin Electronic Co ltd
Current assignee: Liaoning Yijin Electronic Co ltd
Priority date: 2016-01-30
Filing date: 2016-01-30
Publication date: 2016-08-31
Anticipated expiration: 2026-01-30

Abstract

The utility model provides a built -in blast proof dry -type power capacitor of pressure, including the capacitor, the bottom and the top of the capacitor all are equipped with the lead -out wire and all pull up, the peripheral adoption of the capacitor has the gap between wheat pulling -on piece parcel and wheat pulling -on piece and the capacitor, the peripheral bottom of the capacitor that the parcel is good is equipped with down insulating cover, and the periphery of the capacitor that the parcel is good is still wrapped up and is left the clearance between good the capacitor of one deck aluminum casing and aluminum casing and parcel. The utility model discloses this condenser is met with at the operation in -process and is overflowed the excessive pressure and when generating heat in a large number, internal pressure increase, the explosion -proof tensile action of the enough aluminum casing in clearance that leaves between good the capacitor of parcel and the aluminum casing to the performance is compromise with the security.

Description

A kind of dry power condenser of built-in pressure explosion-proof

Technical field

This utility model relates to a kind of capacitor, particularly to the dry power condenser of a kind of built-in pressure explosion-proof, belongs to capacitor technology field.

Background technology

Cylindrical electric power capacitor typically uses silicone oil or microwax to fill at present, and is built-in with pressure cut off protection device.But long-term using is observed and is found that under identical use environment, the service life of oil formula or wax formula power capacitor is not as good as the dry power condenser of resin embedding.And some uses and cannot use square dry power condenser in the design of cabinet; in order to improve this defect; cylindrical capacitor resin embedding can only be used; the capacitor body i.e. wrapping insulant is put in aluminum shell; directly with epoxy resin encapsulated; the most both can retain cylindrical shape and built-in pressure cut off protection device, good service life can have been obtained again.But above two capacitor power capacitor all also exists bigger insecurity, silicone oil or microwax and is heated and easily expands, and this can cause the pressure of capacitor internal to steeply rise surely, and in the case of liquid, the pulling action of aluminum shell will not be affected.And epoxy resin is heated and is difficult to expand and deformation, even if internal pressure is too high, hard resin also can affect the pulling action that aluminum shell is overall, thus causes explosion-proof can not starting.In consideration of it, be necessary traditional power capacitor is optimized, the problem solving presently, there are with this.

Utility model content

The technical problems to be solved in the utility model is to overcome existing defect, it is provided that the dry power condenser of a kind of built-in pressure explosion-proof, can effectively solve the problem in background technology.

In order to solve above-mentioned technical problem, this utility model provides following technical scheme:

This utility model provides the dry power condenser of a kind of built-in pressure explosion-proof, including capacitor body, the bottom of described capacitor body and top are equipped with lead-out wire and draw the most upward, the peripheral of described capacitor body uses mylar film parcel and has gap between mylar film and capacitor body, being provided with lower insulation sleeve bottom the periphery of the capacitor body wrapped, the periphery of the capacitor body wrapped also is enclosed with one layer of aluminum shell.

As a kind of optimal technical scheme of the present utility model, described capacitor body is cylindrical structural.

As a kind of optimal technical scheme of the present utility model, agate between described mylar film and lower insulation sleeve, is used to draw glue to do encapsulation process.

As a kind of optimal technical scheme of the present utility model, the capacitor body wrapped use epoxy resin encapsulated and and aluminum shell between have gap.

This utility model is reached to provide the benefit that: this capacitor meets with overcurrent-overvoltage and a large amount of adstante febre in running, internal pressure increases, the gap enough aluminum explosion-proof pulling action of shell left between the capacitor body and the aluminum shell that wrap, thus performance is taken into account with safety.

Accompanying drawing explanation

Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.

In the accompanying drawings:

Fig. 1 is the dismounting figure of the dry power condenser of a kind of built-in pressure explosion-proof described in this utility model embodiment；

Fig. 2 is the structural representation of the dry power condenser of a kind of built-in pressure explosion-proof described in this utility model embodiment；

Label in figure: 1, capacitor body；2, lead-out wire；3, mylar film；4, lower insulation sleeve；5, aluminum shell.

Detailed description of the invention

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.

Embodiment: as shown in Figure 1-2, this utility model provides the dry power condenser of a kind of built-in pressure explosion-proof, including capacitor body 1, the bottom of described capacitor body 1 and top are equipped with lead-out wire 2 and draw the most upward, the peripheral of described capacitor body 1 uses mylar film 3 wrap up and have gap between mylar film 3 and capacitor body 1, being provided with lower insulation sleeve 4 bottom the periphery of the capacitor body 1 wrapped, the periphery of the capacitor body 1 wrapped also is enclosed with one layer of aluminum shell 5.

Wherein, described capacitor body 1 is in cylindrical structural；Agate is used to draw glue to do encapsulation process between described mylar film 3 and lower insulation sleeve 4；The capacitor body 1 wrapped use epoxy resin encapsulated and and aluminum shell 5 between have gap.

This capacitor is when meeting with overcurrent-overvoltage and a large amount of adstante febres in running, and internal pressure increases, the gap explosion-proof pulling action of enough aluminum shell 5 left between the capacitor body 1 and the aluminum shell 5 that wrap, thus performance is taken into account with safety.

Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims

1.A kind of dry power condenser of built-in pressure explosion-proof, including capacitor body ( 1 ), it is characterised in that described capacitor body ( 1 ) bottom and top be equipped with lead-out wire ( 2 ) and draw the most upward, described capacitor body ( 1 ) peripheral use mylar film ( 3 ) parcel and mylar film ( 3 ) and capacitor body ( 1 Gap is had between), the capacitor body that wraps ( 1 ) periphery bottom be provided with lower insulation sleeve ( 4 ), the capacitor body that wraps ( 1 ) periphery be also enclosed with one layer of aluminum shell ( 5 ).

2.According to claim 1 The dry power condenser of described a kind of built-in pressure explosion-proof, it is characterised in that described capacitor body ( 1 ) in cylindrical structural.

3.According to claim 1 The dry power condenser of described a kind of built-in pressure explosion-proof, it is characterised in that described mylar film ( 3 ) and lower insulation sleeve ( 4 Agate is used to draw glue to do encapsulation process between).

4.According to claim 1 The dry power condenser of described a kind of built-in pressure explosion-proof, it is characterised in that the capacitor body that wraps ( 1 ) use epoxy resin encapsulated and with aluminum shell ( 5 Gap is had between).