CN211350392U

CN211350392U - Fireproof and explosion-proof capacitor

Info

Publication number: CN211350392U
Application number: CN202020232844.XU
Authority: CN
Inventors: 张中喜
Original assignee: Dongguan Chuanghui Electronics Co ltd
Current assignee: Dongguan Chuanghui Electronics Co ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-08-25
Anticipated expiration: 2030-02-28

Abstract

The utility model provides a fireproof and explosion-proof capacitor, which comprises a shell, wherein a fireproof sleeve is arranged outside the shell, a core bag body and a rubber plug are arranged in the shell, the rubber plug is positioned at one side of the core bag body close to the opening of the shell, the core bag body is connected with a first pin and a second pin, and the first pin and the second pin both pass through the rubber plug; one section of the jacket of the shell, which is far away from the rubber plug, is provided with a rear cover, a plurality of fire extinguishing balls are filled in the rear cover, one side of the rear cover, which is far away from the shell, is provided with a plurality of pressure release holes, and a filter screen is arranged in each pressure release hole. The utility model discloses be provided with special fire extinguishing structure in the bottom of shell, when taking place the spontaneous combustion in the bottom of condenser, the fire extinguishing ball in the back lid can put out the fire behavior automatically, has good fire behavior, and puts out a fire or the huge atmospheric pressure that forms in the combustion process can effectively realize the release through the pressure release hole to can avoid the condenser to explode and cause more serious harm.

Description

Fireproof and explosion-proof capacitor

Technical Field

The utility model relates to a condenser specifically discloses a fire and explosion proof's condenser.

Background

The capacitor has the characteristic of preventing direct current and alternating current, can be used for tuning, filtering, coupling, bypassing, energy conversion and time delay, and stores electric charge when voltage is applied between two polar plates of the capacitor. Two conductors close to each other with a layer of non-conductive insulating medium in between constitute the capacitor.

The capacitor in the prior art mainly comprises a core bag body, a rubber plug and a shell, and when the capacitor reaches the service life and fails or the external voltage is too large, large current can be generated, so that the internal temperature of the electrolytic capacitor is increased, spontaneous combustion is easy to occur, once spontaneous combustion occurs, the interior of the capacitor is easy to explode due to too large air pressure, and serious potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a fireproof and explosion-proof capacitor, which has good fireproof performance, can automatically extinguish fire, and can effectively avoid explosion of the capacitor during spontaneous combustion, in order to solve the problems in the prior art.

In order to solve the prior art problem, the utility model discloses a fireproof and explosion-proof capacitor, which comprises a shell, wherein a fireproof sleeve is arranged outside the shell, a core package body and a rubber plug are arranged in the shell, the rubber plug is positioned at one side of the core package body close to the opening of the shell, the core package body is connected with a first pin and a second pin, and the first pin and the second pin both pass through the rubber plug; one section of the jacket of the shell, which is far away from the rubber plug, is provided with a rear cover, a plurality of fire extinguishing balls are filled in the rear cover, one side of the rear cover, which is far away from the shell, is provided with a plurality of pressure release holes, and a filter screen is arranged in each pressure release hole.

Further, the shell is an aluminum shell.

Furthermore, the fireproof sleeve is an asbestos sleeve.

Furthermore, a fireproof interlayer is formed between the fireproof sleeve and the shell.

Furthermore, the fireproof interlayer is filled with quartz sand.

Furthermore, one side of the rubber plug close to the inside of the shell is covered with a fireproof coating layer.

The utility model has the advantages that: the utility model discloses a fire and explosion protection's condenser is provided with special fire extinguishing structure in the bottom of shell, and the spontaneous combustion of condenser generally all comes from its bottom, and when taking place the spontaneous combustion in the bottom of condenser, the fire extinguishing ball in the back lid can put out the intensity of a fire automatically, has good fire behavior, and put out a fire or the huge atmospheric pressure that forms in the combustion process can effectively realize the release through the pressure release hole to can avoid the condenser to explode and cause more serious harm, whole condenser's fire and explosion protection performance is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference signs are: the fire-proof core bag comprises a shell 10, a fire-proof sleeve 11, a fire-proof interlayer 12, a core bag body 20, a first pin 21, a second pin 22, a rubber plug 30, a fire-proof paint layer 31, a rear cover 40, a fire-extinguishing ball 41, a pressure release hole 42 and a filter screen 421.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1.

The embodiment of the utility model discloses a fire and explosion prevention capacitor, including shell 10, shell 10 is equipped with fire prevention cover 11 outward, is equipped with core inclusion 20 and plug 30 in the shell 10, and plug 30 is located core inclusion 20 and is close to shell 10 open-ended one side, and core inclusion 20 is connected with first pin 21 and second pin 22, and first pin 21 and second pin 22 all pass plug 30 and set up; a rear cover 40 is fixedly sleeved on one section of the shell 10 far away from the rubber plug 30, a plurality of fire extinguishing balls 41 are filled in the rear cover 40, the fire extinguishing balls 41 burn fire extinguishing leads wound on the surface layer after meeting open fire, then the core explosion device is driven to automatically spray dry powder, the automatic fire extinguishing effect is achieved, a plurality of pressure releasing holes 42 are formed in one side, far away from the shell 10, of the rear cover 40, filter screens 421 are arranged in the pressure releasing holes 42, the pressure releasing holes can effectively buffer the air pressure inside and outside the rear cover 40, the filter screens 421 can effectively isolate most harmful substances from diffusing to the external environment from the pressure releasing holes 42, preferably, pressure releasing valves are further arranged in the pressure releasing holes 42, the pressure releasing valves can be automatically opened according to the air pressure difference between the two sides, and the effective service life of the.

When the service life of the capacitor is prolonged, the capacitor fails or the voltage is too large, large current can be generated, the temperature in the capacitor is increased, the bottom of the capacitor is easy to cause fire, once the bottom of the capacitor is burnt, the surface of the fire extinguishing ball 41 is broken, dry powder in the fire extinguishing ball 41 is released to extinguish the fire, and the rear cover 40 and the fire extinguishing ball 41 therein are arranged outside the shell 10, so that the influence on the normal work of the core bag body 20 can be effectively avoided; when the air pressure of the rear cover 40 is too high due to fire, the pressure release valve can effectively release the air pressure in the rear cover 40, so that explosion caused by the fact that the air pressure in the rear cover 40 is too high is avoided; in special cases, the fire-proof sheath 11 can effectively prevent the fire from spreading out of the capacitor when the fire spreads to the periphery of the housing 10.

In the present embodiment, the housing 10 is an aluminum housing.

In this embodiment, the fireproof sleeve 11 is an asbestos sleeve, which has good fireproof performance.

In this embodiment, a fire barrier 12 is formed between the fire-proof sleeve 11 and the housing 10, and the fire barrier 12 can be evacuated to reduce the fire in case of fire.

Based on the above embodiment, the fire barrier layer 12 is filled with quartz sand, and the quartz sand has a good fire extinguishing function, and when the fire spreads to the fire barrier layer 12, the quartz sand can effectively assist in extinguishing the fire and further isolate the fire from spreading to the outside.

In this embodiment, the plug 30 has the fire protection coating layer 31 near the one side cover in the shell 10, and the fire protection coating layer 31 can effectively improve the fire-retardant function of plug 30, can avoid coming from the intensity of a fire of shell 10 bottom to come out from plug 30 and spread.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The fireproof and explosion-proof capacitor is characterized by comprising a shell (10), wherein a fireproof sleeve (11) is arranged outside the shell (10), a core bag body (20) and a rubber plug (30) are arranged in the shell (10), the rubber plug (30) is positioned on one side, close to an opening of the shell (10), of the core bag body (20), the core bag body (20) is connected with a first pin (21) and a second pin (22), and the first pin (21) and the second pin (22) penetrate through the rubber plug (30); one section overcoat that shell (10) kept away from plug (30) is equipped with back lid (40), back lid (40) intussuseption is filled with a plurality of balls of putting out a fire (41), back lid (40) are kept away from one side of shell (10) is equipped with a plurality of pressure release holes (42), be equipped with filter screen (421) in pressure release hole (42).

2. A fire and explosion proof capacitor as claimed in claim 1, wherein said outer case (10) is an aluminum case.

3. A fire and explosion protection capacitor as claimed in claim 1, wherein said fire-proof covering (11) is an asbestos covering.

4. A fire and explosion protection capacitor as claimed in claim 1, wherein a fire barrier (12) is formed between the fire-resistant sheath (11) and the housing (10).

5. A fire and explosion protection capacitor as claimed in claim 4, wherein the fire barrier (12) is filled with quartz sand.

6. A fire and explosion proof capacitor as claimed in claim 1, wherein the rubber plug (30) is covered with a layer of fire retardant paint (31) on the side adjacent to the inside of the housing (10).