CN102930979A

CN102930979A - Capacitor

Info

Publication number: CN102930979A
Application number: CN2011102368669A
Authority: CN
Inventors: 骆家星; 张业清; 马明军
Original assignee: SHUNDE SHUNRONG ELECTRIC CO Ltd
Current assignee: SHUNDE SHUNRONG ELECTRIC CO Ltd
Priority date: 2011-08-13
Filing date: 2011-08-13
Publication date: 2013-02-13
Anticipated expiration: 2031-08-13
Also published as: CN102930979B

Abstract

The invention relates to a capacitor. Internal heat is conducted out via a heat pipe, the temperature difference between the interior and the surface of the capacitor is reduced, so that the reliability of the capacitor is increased, and the service life is prolonged. The capacitor comprises a core formed by rolling, a heat pipe device, a shell, a locating sleeve and insulating paper, wherein the heat pipe of the heat pipe device is arranged in the center of the core. The heat in the center of the capacitor is conducted to the surface of the capacitor in time by using the heat transfer principle of the heat pipe, so that the temperature difference between the interior and the surface of the capacitor is reduced, and the environment temperature borne by the capacitor is increased.

Description

A kind of capacitor

Technical field:

The present invention relates to a kind of capacitor, specially refer to a kind of power capacitor that adopts heat pipe heat radiation.

Background technology:

All can generate heat in the capacitor course of work and the capacitor internal temperature is raise, if internal temperature is too high during capacitor work, will speed up the aging of capacitor, capacitor is damaged too early.At present existing various ways solves the heat dissipation problem of capacitor, comprise water-cooled, the mode such as air-cooled, wherein hot pipe technique has also obtained employing, but what most of technology solved is the capacitor surface heat dissipation problem, a kind of heat sink of high-power capacitor is disclosed such as CN102013319A, solution be exactly the heat dissipation problem of capacitor surface.Yet capacitor working temperature peak also is the inside of capacitor, evidence, and the center is to case surface internally during capacitor work, and its temperature is that linearity falls progressively, thereby the temperature at reduction capacitor internal center is only real effectively heat dissipating method.CN2517091Y discloses a kind of external cooling electrothermal capacity, described the radiator heat absorbing end of heat pipe one class has been inserted capacitor internal, radiating end inserts external cooler, thereby the heat of capacitor internal is derived, scrutinize the disclosure file directory literal and accompanying drawing, and the correlation technique CN2170570Y that adopts in conjunction with this document as can be known, this technology moves on to the radiator in the capacitor cover shell and covers outside the shell, heat pipe just is inserted into the inside of covering shell, link to each other with the heating part of capacitor, its heating part is actually the heating part that covers shell inner capacitor outer surface, its essence remains and solves the heat dissipation problem that covers the capacitor outer surface in the shell, and the heat dissipation problem of capacitor internal is not resolved yet.

Summary of the invention:

For overcoming the deficiencies in the prior art, the invention provides a kind of capacitor, utilize heat pipe that internal heat is derived, reduce the temperature difference between capacitor internal and the surface, to improve the reliability of capacitor, prolong its useful life.

The present invention realizes by the following technical solutions:

Described capacitor comprises and rolls fuse, shell, positioning sleeve and the insulating paper that forms, and also is provided with heat-pipe apparatus, and the heat pipe of described heat-pipe apparatus is located at the center of fuse.

Described heat-pipe apparatus comprises heat pipe and heat-conducting block, heat-conducting block is installed on the end of heat pipe, be separated with positioning sleeve between fuse and the heat transfer block, the heat at fuse center is delivered to by heat pipe, heat-conducting block on the shell of capacitor, balanced fuse center and capacitor case temperature.

Described capacitor can also be the anti-blasting metallized thin-film capacitor device, and the center of capacitor is provided with mandrel, heat pipe be located in the mandrel and with the inner surface close contact of mandrel, be full of filler between each components and parts of capacitor internal.

Described heat-pipe apparatus is the antigravity heat-pipe apparatus, and heat-conducting block is installed on the lower end of heat pipe.

Described heat-pipe apparatus is the gravity heat-pipe apparatus, and heat-conducting block is installed on the upper end of heat pipe.

Described heat-pipe apparatus is single heat pipe, and the end of heat pipe is installed on the bottom of shell, and with the inner surface close contact of shell installation position, directly the heat with the fuse center is delivered on the shell of capacitor.

Described positioning sleeve is insulating material, and described heat-conducting block and shell are aluminum material.

The present invention installs heat pipe in the centre of capacitor body, utilizes Heat transfer principle of heat pipe, the heat at capacitor center in time is transmitted to the surface of capacitor, reduces the temperature difference on capacitor internal and surface, the ambient temperature when improving capacitor work

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention one.

Fig. 2 is A place enlarged drawing among Fig. 1.

Fig. 3 is the structural representation of the embodiment of the invention two.

Fig. 4 is the structural representation of the embodiment of the invention three.

Embodiment

Embodiment one:

Referring to Fig. 1 and Fig. 2, capacitor comprises positioning sleeve 1, insulating paper 2, fuse 3, shell 4, heat-pipe apparatus 5, lower positioning sleeve 6, capacitor is cylindrical, wherein heat-pipe apparatus 5 is made of heat pipe 51 and heat-conducting block 52, heat pipe 51 is located at the center of fuse, heat-conducting block 52 is installed on the lower end of heat pipe 51, fuse is by upper positioning sleeve 1, lower positioning sleeve 6 and insulating paper 2 wrap up, heat pipe 51 respectively with the center of fuse 3 and the center close contact of heat-conducting block 52, the external cylindrical surface of heat-conducting block 52 and basal surface and shell close contact, thereby make the heat at the center of fuse 3 pass through heat pipe 51, heat-conducting block 52 is delivered on the shell 4 and carries out heat exchange with the external world, as priority scheme, heat-conducting block 52 and shell 4 all adopt aluminum material, the thermal coefficient of expansion that capacitor integral body can be consistent, and possess good heat conductivility.Because heat-conducting block 52 is in the lower position of capacitor, thereby heat-pipe apparatus 5 is selected the antigravity heat pipe.Upper positioning sleeve 1, lower positioning sleeve 6 and insulating paper are insulating material, have avoided the short circuit between fuse and shell.

Embodiment two:

Referring to Fig. 3, shown in capacitor be the anti-blasting metallized thin-film capacitor device, metallized film is wound on the mandrel 8 and forms fuse 3, the top of capacitor also is provided with explosion-protection equipment 7, heat pipe 51 is located in the mandrel 8, and with mandrel 8 close contacts, capacitor is cylindrical, gap in the shell 4 has been full of inserts 9, make positioning sleeve 1, insulating paper 2, fuse 3, shell 4, heat-pipe apparatus 5, lower positioning sleeve 6 components and parts such as grade are interior fixing at shell 4, heat-pipe apparatus 5 is selected gravity assisted heat pipe, heat-conducting block 52 is installed on the upper end of heat pipe 51, after causing the capacitor internal temperature to raise during fuse 3 work, the gasification of the working medium of heat pipe 51 bottoms is raised to the top of heat pipe 51, the entrained heat of steam is passed on the shell 4 by heat-conducting block 52, and steam Yin Wendu reduces and is condensed into liquid simultaneously, drop to heat pipe bottom at Action of Gravity Field and evaporated once again, carry out heat exchange thereby constantly the heat at the center of fuse 3 is delivered on the shell 4 with the external world.

Embodiment three:

Referring to Fig. 4, single heat pipe 51 has consisted of heat-pipe apparatus, and heat pipe 51 is installed on the bottom of shell 4, and the surperficial close contact of the installation position of heat pipe 51 and shell 4 is directly delivered to the heat at the center of fuse 3 on the shell 4.

A general fuse just can form a capacitor; can also be as required; a plurality of fuses are combined into a combined capacitor; technical scheme of the present invention is equally applicable to the capacitor of a plurality of fuse combinations; those skilled in the art are according to technical scheme of the present invention and embodiment; need not to pay creative work; the heat at each fuse center in the combined capacitor can be delivered on the shell of capacitor; the capacitor that combines with the fuse of band heat-pipe apparatus of the present invention drops into protection scope of the present invention equally because possess all technical characterictics of the present invention.

Further, can also produce radiating fin at the capacitor case of the embodiment of the invention, or adopt the forced convertion measure to carry out external heat-exchanging, all these improvement and distortion all belong to protection scope of the present invention.

Claims

1. a capacitor comprises rolling fuse, shell, positioning sleeve and the insulating paper that forms, and it is characterized in that described capacitor also is provided with heat-pipe apparatus, and the heat pipe of heat-pipe apparatus is located at the center of fuse.

2. a kind of capacitor according to claim 1 is characterized in that heat-pipe apparatus comprises heat pipe and heat-conducting block, and heat-conducting block is installed on the end of heat pipe, is separated with positioning sleeve between fuse and the heat transfer block.

3. a kind of capacitor according to claim 1, it is characterized in that described capacitor is the anti-blasting metallized thin-film capacitor device, the center of capacitor is provided with mandrel, heat pipe be located in the mandrel and with the inner surface close contact of mandrel, be full of filler between each components and parts of capacitor internal.

4. according to claim 1, one of 2 or 3 described a kind of capacitors, it is characterized in that described heat-pipe apparatus is the antigravity heat-pipe apparatus, heat-conducting block is installed on the lower end of heat pipe.

5. according to claim 1, one of 2 or 3 described a kind of capacitors, it is characterized in that described heat-pipe apparatus is the gravity heat-pipe apparatus, heat-conducting block is installed on the upper end of heat pipe.

6. according to claim 1, one of 2 or 3 described a kind of capacitors, it is characterized in that positioning sleeve is insulating material, heat-conducting block and shell are aluminum material.

7. a kind of capacitor according to claim 1 is characterized in that heat-pipe apparatus is single heat pipe, and the end of heat pipe is installed on the bottom of shell, with the inner surface close contact of shell installation position.