CN216311612U - Capacitor with pressure relief function - Google Patents

Abstract

The utility model relates to a condenser with pressure release function, relate to electronic component technical field, it is too high in order to solve the condenser load, make the condenser stabilize too high, there is the problem of potential safety hazard, it includes the sleeve, electric capacity core and plug, the electric capacity core sets up in the sleeve, electric capacity core one end is provided with two wire strips, the wire hole that two can supply the wire strip to pass is seted up on the plug surface, the plug lid fits the sleeve opening part, the sleeve outside is provided with explosion-proof shell, explosion-proof shell includes cap and casing, the cap lid fits on the casing, a plurality of pressure release holes have been seted up to the casing diapire, the pressure release mouth has been seted up on the plug surface, the one side that the plug deviates from the electric capacity core is provided with the pressure release subassembly that is used for carrying out the pressure release in the sleeve, the pressure release mouth communicates with each other with pressure release subassembly is inside. This application has and provides the explosion-proof function of pressure release for the condenser, reduces the condenser and burns out when transshipping, arouses the probability of potential safety hazard, improves the effect of circuit security.

Description

Capacitor with pressure relief function

Technical Field

The application relates to the technical field of electronic elements, in particular to a capacitor with a pressure relief function.

Background

A capacitor is an energy storage element that can hold electric charges, the characteristics of the capacitor are that direct current is blocked and alternating current is allowed to pass, which is equivalent to the existence of open circuit in a circuit, and the capacitor is widely applied to various circuits.

When too many electrical components in one circuit are used in parallel, the operating temperature of the capacitor is too high, and the voltage applied to two ends of the capacitor exceeds the withstand voltage of the capacitor, so that the capacitor cannot contain charges any more, and the capacitor is burnt out. The capacitor is burnt out, so that potential safety hazards exist, and huge loss can be caused if the potential safety hazards are not found and solved in time. Therefore, a capacitor with a self-venting function is needed to reduce the probability of such events.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condenser and transship and burn out, cause the potential safety hazard, improve circuit security, this application provides a condenser with pressure release function.

The application provides a condenser with pressure release function adopts following technical scheme:

the utility model provides a condenser with pressure release function, includes sleeve, electric capacity core and plug, the electric capacity core sets up in the sleeve, electric capacity core one end is provided with two wire strips, the wire hole that two can supply the wire strip to pass is seted up on the plug surface, the plug lid fits the sleeve opening part, the sleeve outside is provided with explosion-proof shell, explosion-proof shell includes cap and casing, the cap lid fits on the casing, a plurality of pressure release holes have been seted up to the casing diapire, the pressure release mouth has been seted up on the plug surface, the one side that the plug deviates from the electric capacity core is provided with the pressure release subassembly that is used for carrying out the pressure release in the sleeve, the pressure release mouth communicates with each other with the pressure release subassembly is inside.

By adopting the technical scheme, the explosion-proof shell is sleeved at the outer end of the sleeve, so that the capacitor is protected from the outside, and the problem that the capacitor is damaged due to unsmooth work of the capacitor caused by factors such as external dust deposition and the like can be effectively solved; simultaneously, set up the pressure release subassembly, through the pressure release mouth on plug surface to sleeve inside heat and gas outgoing, rethread casing inner space discharges the heat from the pressure release hole of casing diapire for explosion-proof shell inside is in a comparatively safe operational environment, has improved the security of condenser when using, has prolonged life.

Optionally, the pressure release subassembly includes pressure release shell, pressure release piston and reset spring, pressure release shell one end opening, pressure release shell opening one end is connected with the plug, the pressure release piston sets up in pressure release shell, the reset spring cover is located on the piston rod of pressure release piston, reset spring one end links to each other with the pressure release shell diapire, the hole that slides that can supply the piston rod of pressure release piston to pass is seted up to pressure release shell diapire, a plurality of gas grooves of letting out have been seted up to pressure release shell lateral wall, gas grooves and pressure release shell are inside to communicate with each other.

Through adopting above-mentioned technical scheme, after the inside more heat and the gas of production of casing, gas will promote the pressure release piston, the piston rod of pressure release piston can pass the hole of sliding, will let out the gas tank and be linked together with pressure release shell is inside for the rethread lets out the gas tank and gets into the inside hollow space of casing in getting into the pressure release shell from the pressure release mouth combustion gas, discharge through the pressure release hole of casing diapire at last, it is stable to maintain the atmospheric pressure in the casing, improve the security and prolong the life of condenser.

Optionally, the inside diapire of casing is provided with the joint seat, the joint seat is located between the pressure release hole, set up the joint groove with joint seat looks adaptation on the outer diapire of cover.

Through adopting above-mentioned technical scheme, set up the joint seat and be convenient for install the condenser in the casing diapire, joint seat and joint groove mutually support, improve the installation stability of condenser for gas in the sleeve when promoting the pressure release piston of pressure release subassembly, make the other end have the holding power to offset each other, improve stability, be convenient for carry out the pressure release to sleeve inside.

Optionally, an insulating buffer pad is arranged between the clamping seat and the bottom wall of the shell.

Through adopting above-mentioned technical scheme, set up the rigid contact that insulating blotter can improve between sleeve diapire and the joint seat, can reduce under the inside atmospheric pressure of condenser increases suddenly the condition, the strong collision that takes place between sleeve and the joint seat has protected explosion-proof shell and telescopic structure safety, improves the security, increase of service life.

Optionally, a plurality of explosion-proof grooves are formed in the bottom wall of the sleeve, the explosion-proof grooves are all arranged on the inner side of the clamping groove, and the explosion-proof grooves are formed outwards along the circle center of the bottom wall of the sleeve.

Through adopting above-mentioned technical scheme, explosion-proof tank is as an urgent structure, can effectively improve when pressure release subassembly pressure release is untimely and the inside atmospheric pressure of sleeve increases suddenly, and gaseous direct bursting rupture explosion-proof tank's weak structure carries out the pressure release, can effectively reduce electric capacity and explode suddenly and split, leads to the problem of bigger loss, has improved security and economic benefits.

Optionally, one end of the inner wall of the shell, which is close to the shell cover, is provided with at least two limiting strips, a plurality of limiting blocks used for abutting the rubber plug are arranged in the shell, limiting grooves used for embedding the limiting strips are formed in the side walls of the limiting blocks, and the limiting blocks are arranged outside the rubber plug.

Through adopting above-mentioned technical scheme, set up stopper and spacing and can support the condenser tightly for the sleeve is stably installed on the joint seat, after the cap lid closes, utilizes the stopper to support the condenser, can effectively improve under the condition that external environment rocked, and the problem that explosion-proof shell inside capacitor position changed has improved structural stability.

Optionally, the inner side wall of the shell is provided with an insulating heat conducting film, the insulating heat conducting film is arranged on one side, away from the shell cover, of the limiting strip, the outer side wall of the shell is provided with a plurality of radiating fins, the length direction of the radiating fins is consistent with the length direction of the shell, and the radiating fins are distributed along the circumferential direction of the shell.

Through adopting above-mentioned technical scheme, the inside insulating heat conduction membrane that sets up of casing can be conducted by pressure release subassembly exhaust heat, and the fin of rethread casing lateral wall is overflowed the heat and is scattered, cooperates with the pressure release hole of casing diapire, improves the radiating efficiency of pressure release to be in a comparatively safe operational environment between making explosion-proof shell inside and the condenser, improve the security, increase of service life.

Optionally, the side wall of the sleeve is provided with a plurality of annular grooves, the annular grooves are formed along the circumferential direction of the sleeve, and the annular grooves are distributed along the length direction of the sleeve.

Through adopting above-mentioned technical scheme, set up the annular groove and play explosion-proof effect to the condenser of work in the circuit, when sleeve inside produced a large amount of heats and gas, because annular groove department wall thickness is thinner for the structure is comparatively fragile, and the thin wall of annular groove department is opened to the inside gas of sleeve between can, carries out the pressure release, thereby improves the inside problem of collecting too much gas and heat explosion taking place of sleeve, has improved the security and the practicality of condenser.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the explosion-proof shell can reduce the influence of the external environment on the working state of the capacitor on one hand, and can also effectively perform explosion-proof protection on the capacitor on the other hand, and the pressure relief assembly is arranged to discharge internal gas and heat through the pressure relief hole in time, so that the internal structure of the capacitor is protected, and the safety is improved;

2. set up annular groove and explosion-proof groove for the sleeve wall thickness at this place is more weak, makes the pressure release subassembly under the untimely condition of carrying out the pressure release, and gaseous weak department that can in time back-off annular groove and explosion-proof groove directly carries out the pressure release, has effectively reduced the probability of condenser explosion, has improved the security.

Drawings

Fig. 1 is an exploded schematic view of a capacitor with a pressure relief function according to an embodiment of the present disclosure.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic structural view of an explosion-proof case according to an embodiment of the present application.

Fig. 4 is an enlarged view at B-B in fig. 3.

Fig. 5 is a schematic diagram of a bottom wall structure of a capacitor with a pressure relief function according to an embodiment of the present application.

Fig. 6 is a schematic diagram of an explosive structure of an explosion proof housing of an embodiment of the present application.

Description of reference numerals: 1. a sleeve; 11. a clamping groove; 12. an explosion-proof groove; 13. an annular groove; 2. a capacitor core; 21. a wire guide; 3. a rubber plug; 31. a wire guide hole; 32. a pressure relief port; 4. an explosion-proof shell; 41. a shell cover; 42. a housing; 421. a pressure relief vent; 422. a clamping seat; 423. a limiting strip; 424. a limiting block; 4241. a limiting groove; 5. a pressure relief assembly; 51. a pressure relief shell; 511. a sliding hole; 512. a gas release groove; 52. a pressure relief piston; 521. a piston rod; 53. a return spring; 6. an insulating buffer pad; 7. an insulating heat conductive film; 8. and a heat sink.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses condenser with pressure release function. Referring to fig. 1 and 2, a capacitor with pressure relief function comprises a sleeve 1, a capacitor core 2 arranged in the sleeve 1 and a rubber plug 3 covering an opening of the sleeve 1. A plurality of annular grooves 13 are formed in the side wall of the sleeve 1, the wall thickness of the sleeve 1 at the position of each annular groove 13 is thin, and internal gas can be pushed open directly to relieve pressure. The one end of electric capacity core 2 is provided with two wire strips 21, and two wire holes 31 have been seted up corresponding wire strip 21 on 3 surfaces of plug, and wire strip 21 passes corresponding wire hole 31, and 3 lids of plug fit in 1 hollow department of sleeve. In this embodiment, the annular groove 13 is provided as one groove, and the rubber plug 3 is fixedly connected to the sleeve 1 through the sealing compound. The sleeve 1 is made of aluminum materials, and the rubber plug 3 is made of rubber materials.

Referring to fig. 1 and 2, a pressure relief opening 32 is formed in the surface of the rubber plug 3, and the pressure relief opening 32 is located between the two wire holes 31. One end of the pressure relief port 32 facing the outside of the rubber plug 3 port is provided with a pressure relief assembly 5 for relieving the pressure inside the sleeve 1. The pressure relief assembly 5 includes a pressure relief housing 51, a pressure relief piston 52 and a return spring 53. One end of the pressure relief shell 51 is open and the open end is fixedly connected with the surface of the rubber plug 3 through glue, and the pressure relief port 32 is communicated with the inside of the pressure relief shell 51.

Referring to fig. 1, a sliding hole 511 is formed in one end of the pressure relief shell 51, which is away from the rubber plug 3, the pressure relief piston 52 is arranged in the pressure relief shell 51, a piston rod 521 of the pressure relief piston 52 is inserted into the sliding hole 511, the return spring 53 is sleeved on the piston rod 521, the diameter of the return spring 53 is larger than the sliding hole 511, and one end of the return spring 53 is fixedly connected with the end of the pressure relief shell 51, which is provided with the sliding hole 511, by welding. The side wall of the pressure relief shell 51 is provided with a gas relief groove 512. In this embodiment, the piston rod 521 blocks the pressure relief opening 32 at the initial position, and the air release groove 512 is not communicated with the pressure relief opening 32. When the piston rod 521 is pushed by the air pressure inside the sleeve 1, the air enters the pressure relief shell 51 through the pressure relief port 32 and is exhausted through the air relief groove 512.

Referring to fig. 3 and 4, an explosion-proof shell 4 is arranged outside the sleeve 1, the explosion-proof shell 4 includes a shell cover 41 and a shell 42, a plurality of pressure relief holes 421 are formed in the bottom wall of the shell 42, the pressure relief holes 421 are uniformly formed along the center of the circle of the bottom wall of the shell 42, and the sleeve 1 is arranged in the shell 42.

Referring to fig. 4 and 5, the outer bottom wall of the sleeve 1 is provided with a plurality of anti-explosion grooves 12, the anti-explosion grooves 12 are formed along the center of the circle of the bottom wall of the sleeve 1, in this embodiment, three anti-explosion grooves 12 are provided, and the anti-explosion grooves are uniformly distributed around the center of the circle. Annular joint groove 11 has been seted up to explosion-proof groove 12 outside, and the inside diapire of casing 42 corresponds joint groove 11 and is provided with joint seat 422, joint groove 11 and joint seat 422 looks adaptation, and joint seat 422 is located between pressure release hole 421.

Referring to fig. 4, an insulating buffer pad 6 is disposed between the clamping seat 422 and the inner bottom wall of the housing 42, and an insulating heat-conducting film 7 is disposed on the inner wall of the housing 42. In this embodiment, the insulating buffer pad 6 is fixedly connected to the inner bottom wall of the housing 42 through glue, and the insulating heat-conducting film 7 is fixedly connected to the inner wall of the housing 42 through glue. Insulating blotter 6 chooses the rubber material for use, and insulating heat conduction membrane 7 chooses insulating graphite layer for use.

Referring to fig. 4, a plurality of cooling fins 8 are disposed on the outer wall of the housing 42, and the length direction of the cooling fins 8 is consistent with the length direction of the housing 42 and is uniformly distributed along the circumferential direction of the housing 42.

Referring to fig. 4 and 6, the inner wall of the housing 42 is provided with at least two limiting bars 423, and the limiting bars 423 are disposed at one end of the insulating heat-conducting film 7 close to the housing cover 41. A plurality of limiting blocks 424 are arranged in the shell 42, limiting grooves 4241 for embedding the limiting strips 423 are formed in one ends of the limiting blocks 424, and the limiting grooves 4241 are matched with the limiting strips 423. After the limiting strips 423 and the limiting blocks 424 are installed, the limiting blocks 424 abut against the end walls of the rubber plug 3. In this embodiment, the number of the limiting strips 423 is four, the limiting strips 423 are provided with threaded holes facing one end of the case cover 41, the case cover 41 is provided with a plurality of screws, and the case cover 41 is in threaded connection with the limiting strips 423. The conductor bars 21 of the capacitive core 2 pass through the cover 41 and can be connected to an electrical circuit.

The implementation principle of the capacitor with the pressure relief function in the embodiment of the application is as follows: the capacitor is assembled in advance, the capacitor core 2 is embedded into the sleeve 1, and the rubber plug 3 is sealed and covered at the opening of the sleeve 1. Install pressure release subassembly 5 on 3 surfaces of plug, install sleeve 1 on the joint seat 422 of the inside diapire of casing 42 through joint groove 11, inlay each stopper 424 and spacing 423 mutually again, pass through screw and spacing 423 threaded connection with casing cover 41, fit casing cover 41 lid in casing 42 opening part.

When the capacitor is operated, if gas and heat are generated in the sleeve 1, the gas will pass through the gas release groove 512 by pushing the piston rod 521, so that the gas release groove 512 is communicated with the inner space of the pressure release case 51, and the gas and heat will enter the inner hollow space of the case 42 through the gas release groove 512. The gas is discharged through the pressure relief hole 421 in the bottom wall of the casing 42, and the heat is absorbed through the insulating heat-conducting film 7 on the inner wall of the casing 42, and then discharged through the heat dissipation fins 8 on the outer wall of the casing 42. If the internal air pressure of the capacitor is increased too fast, and the pressure relief assembly 5 cannot relieve the pressure in time, the internal air of the capacitor directly backs up the weak structures of the explosion-proof groove 12 and the annular groove 13, and the pressure is relieved directly.

According to the capacitor with the pressure relief function, the pressure relief assembly 5 and the explosion-proof structure are arranged, so that pressure relief can be performed on the premise that the capacitor is not damaged in a stable working state, and the service life of the capacitor is prolonged; when a large amount of gas and heat are suddenly generated in the capacitor, the explosion-proof groove 12 and the annular groove 13 can be directly jacked open, pressure relief is directly performed, loss is reduced, and safety is improved. This condenser combines together explosion-proof function and pressure release function, has improved the security of condenser, increase of service life, possesses economic benefits more.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a condenser with pressure release function, includes sleeve (1), electric capacity core (2) and plug (3), electric capacity core (2) set up in sleeve (1), electric capacity core (2) one end is provided with two wire strip (21), wire hole (31) that two can supply wire strip (21) to pass are seted up on plug (3) surface, plug (3) lid fits sleeve (1) opening part, its characterized in that: the utility model discloses a pressure relief device, including sleeve (1), explosion-proof shell (4) are provided with in the sleeve (1) outside, explosion-proof shell (4) are including cap (41) and casing (42), cap (41) lid fits on casing (42), a plurality of pressure release holes (421) have been seted up to casing (42) diapire, pressure release mouth (32) have been seted up on plug (3) surface, the one side that plug (3) deviate from electric capacity core (2) is provided with and is used for carrying out pressure release subassembly (5) of pressure release in sleeve (1), pressure release mouth (32) communicate with each other with pressure release subassembly (5) inside.

2. The capacitor with pressure relief function according to claim 1, wherein: pressure release subassembly (5) are including pressure release shell (51), pressure release piston (52) and reset spring (53), pressure release shell (51) one end opening, pressure release shell (51) opening one end is connected with plug (3), pressure release piston (52) set up in pressure release shell (51), reset spring (53) cover is located on piston rod (521) of pressure release piston (52), reset spring (53) one end links to each other with pressure release shell (51) diapire, the hole of sliding (511) that can supply piston rod (521) of pressure release piston (52) to pass are seted up to pressure release shell (51) diapire, a plurality of air release grooves (512) have been seted up to pressure release shell (51) lateral wall, air release groove (512) communicate with each other with pressure release shell (51) inside.

3. The capacitor with pressure relief function according to claim 1, wherein: the inside diapire of casing (42) is provided with joint seat (422), joint seat (422) are located between pressure release hole (421), set up joint groove (11) with joint seat (422) looks adaptation on the outer diapire of sleeve (1).

4. The capacitor with pressure relief function according to claim 3, wherein: an insulating buffer pad (6) is arranged between the clamping seat (422) and the bottom wall of the shell (42).

5. The capacitor with pressure relief function according to claim 3, wherein: a plurality of explosion-proof grooves (12) are formed in the bottom wall of the sleeve (1), the explosion-proof grooves (12) are arranged on the inner side of the clamping groove (11), and the explosion-proof grooves (12) are formed along the circle center of the bottom wall of the sleeve (1) outwards.

6. The capacitor with pressure relief function according to claim 1, wherein: one end of the inner wall of the shell (42) close to the shell cover (41) is provided with at least two limiting strips (423), a plurality of limiting blocks (424) used for tightly supporting the rubber plug (3) are arranged in the shell (42), limiting grooves (4241) which can be used for embedding the limiting strips (423) are formed in the side wall of each limiting block (424), and each limiting block (424) is arranged outside the rubber plug (3).

7. The capacitor with pressure relief function according to claim 6, wherein: casing (42) inside wall is provided with insulating heat conduction membrane (7), insulating heat conduction membrane (7) set up in spacing (423) one side of keeping away from cap (41), casing (42) lateral wall is provided with a plurality of fin (8), fin (8) length direction is unanimous with casing (42) length direction, casing (42) circumference distribution is followed in fin (8).

8. The capacitor with pressure relief function according to claim 1, wherein: the side wall of the sleeve (1) is provided with a plurality of annular grooves (13), the annular grooves (13) are formed along the circumferential direction of the sleeve (1), and the annular grooves (13) are distributed along the length direction of the sleeve (1).

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