CN215266431U

CN215266431U - Explosion-proof pressure release structure of double-deck proof box

Info

Publication number: CN215266431U
Application number: CN202121025734.7U
Authority: CN
Inventors: 龙德中; 彭露
Original assignee: Chongqing Harding Environmental Testing Technology Co ltd
Current assignee: Chongqing Harding Environmental Testing Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-21
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses an explosion-proof pressure release structure of double-deck proof box, including the proof box body, this internal studio and the pressure release passageway of being equipped with of proof box, pressure release passageway the inner communicates with the studio, and the outer end extends to the top of proof box body, and pressure relief device is installed at the top of proof box body, pressure relief device includes the support casing that gravity piece and upper and lower both ends link up, the lower extreme of supporting the casing with the outer end sealing connection of pressure release passageway, the upper end at the support casing is connected in the upset of gravity piece to with the mode shutoff of dead weight the pressure release passageway, the air discharge fan is installed to one side of supporting the casing, be connected with the exhaust interface on the air discharge fan for external air treatment equipment. The utility model has the advantages that: after the product explodes, the poisonous and harmful gas in the working chamber can be pumped away in time, and the environmental pollution caused by direct emission is avoided.

Description

Explosion-proof pressure release structure of double-deck proof box

Technical Field

The utility model relates to a proof box technical field, concretely relates to explosion-proof pressure release structure of double-deck proof box.

Background

The test box is a test device capable of simulating environments such as high temperature, high humidity, high pressure, sand dust, wind and snow, and products are generally required to be placed into the test device after sample preparation is completed, so that the reliability and the service life of the products in the environments can be known and evaluated, and the subsequent improvement and optimization of the products can be facilitated.

With the rapid development of new energy automobiles, the market demand of lithium batteries is increasing, and for such battery products, before the battery products are put into the market, various extreme use environments such as high temperature, low temperature and the like need to be simulated in a test box. Because the battery explodes in the extreme test environment and is inevitable, a plurality of test boxes are provided with pressure relief ports to release the pressure generated by the battery explosion and avoid destructive damage of the test boxes. However, the explosion of the battery generates more or less toxic and harmful gases, and if the gases are directly discharged from the pressure relief port, the environment is polluted.

Therefore, it is necessary to design a pressure relief structure capable of collecting toxic and harmful gases generated by explosion in time.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an explosion-proof pressure release structure of double-deck proof box after the product explosion, can in time take away the poisonous and harmful gas in the studio, avoids direct emission to cause environmental pollution.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides an explosion-proof pressure release structure of double-deck proof box, includes the proof box body, this internal studio and the pressure release passageway of being equipped with of proof box, the inner and studio intercommunication of pressure release passageway, the outer end extends to the top of proof box body, and its key lies in: pressure relief device is installed at the top of proof box body, pressure relief device includes the support casing that gravity piece and upper and lower both ends link up, the lower extreme of support casing with pressure relief passageway's outer end sealing connection, the upper end at the support casing is connected in the upset of gravity piece to seal up with the mode of dead weight and stop up pressure relief passageway, the air discharge fan is installed to one side of support casing, be connected with the exhaust interface on the air discharge fan for external air treatment equipment.

By adopting the structure, if the product explodes in the working chamber, the explosion impact force can push the gravity block to overturn upwards, so that the pressure relief channel is opened, the pressure in the working chamber of the test box is released in time, and the explosion of the test box is avoided. After the high pressure that the explosion produced is released in the twinkling of an eye from the upper end that supports the casing, the gravity piece is again blockked up pressure release channel by its dead weight whereabouts again, then starts the air discharge fan and can in time take away the poisonous and harmful gas that the explosion produced in the studio to carry to external air treatment equipment through the exhaust interface and carry out environmental protection and handle.

Preferably, the method comprises the following steps: and the position of the supporting shell corresponding to the exhaust fan is provided with an exhaust hole. By adopting the structure, after the exhaust fan is started, gas can be ensured to be pumped out.

Preferably, the method comprises the following steps: one end of the gravity block is rotatably installed at the upper end of the supporting shell through a hinge, and a limiting block is arranged at the position, close to the hinge, of the supporting shell and protrudes upwards. By adopting the structure, the rotation overtravel of the gravity block can be avoided, and the gravity block can automatically fall back after the pressure is released.

Preferably, the method comprises the following steps: and an iron chain is also connected between the inside of the supporting shell and the lower side of the gravity block. By adopting the structure, the rotation overtravel of the gravity block can be avoided, and the gravity block can automatically fall back after the pressure is released.

Preferably, the method comprises the following steps: the support shell and the pressure relief channel are both of rectangular frame structures, and the lower end of the support shell is sleeved at the outer end of the pressure relief channel in an annular mode. The structure is adopted, so that the assembly is convenient.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides an explosion-proof pressure release structure of double-deck test box, the high pressure that the explosion produced is from the upper end of supporting the casing after releasing in the twinkling of an eye, starts the air discharge fan and can in time take away the poisonous and harmful gas in the studio to carry out environmental protection through exhaust interface to external air treatment equipment and handle, avoided the environmental pollution of direct emission formation.

Drawings

FIG. 1 is a top view of a double-layer test chamber;

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is a schematic view of a partial structure of a double-layer test chamber.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1 to 3, an explosion-proof pressure relief structure of a double-layer test chamber comprises a test chamber body 1, the test chamber body 1 is provided with two working chambers 11, the two working chambers 11 are distributed in an upper layer and a lower layer, both working chambers 11 are connected with pressure relief channels 12, the inner ends of the pressure relief channels 12 are communicated with the corresponding working chambers 11, the outer ends of the pressure relief channels extend to the top of the test chamber body 1, two groups of pressure relief devices 2 are installed at the top of the test chamber body 1, the two groups of pressure relief devices 2 correspond to the two pressure relief channels 12 one by one, each pressure relief device 2 comprises a gravity block 21 and a support shell 22 with the upper end and the lower end communicated with each other, the lower end of the support shell 22 is hermetically connected with the corresponding pressure relief channel 12, the gravity block 21 is a metal iron block and is connected to the upper end of the support shell 22 in an overturning manner, in a normal state, the pressure relief channel 12 is sealed in a self-weight manner by the gravity block 21, if a product explodes in the working chambers 11, the impact force of explosion can push the gravity block 21 to turn upwards, so that the pressure relief channel 12 is opened, the pressure in the working chamber 11 of the test box is released in time, and the explosion of the test box is avoided.

As shown in fig. 3, one end of the weight block 21 is rotatably mounted on the upper end of the support housing 22 through a hinge 23, and after the high pressure generated by explosion is instantaneously released from the upper end of the support housing 22, the weight block 21 falls by its own weight and blocks the pressure release channel 12 again. In order to avoid the gravity block 21 from rotating over travel when an explosion occurs and being unable to return to the original position again, the present embodiment provides two limiting ways, one of which is: the support shell 22 is provided with a limiting block 22b at a position close to the hinge 23, the limiting block 22b protrudes upwards, and the limiting block 22b can limit the rotation range of the gravity block 21 to be not more than 90 degrees. The second is that: an iron chain is connected between the supporting shell 22 and the gravity block 21, one end of the iron chain is connected to the inner wall of the supporting shell 22, the other end of the iron chain is connected to the lower side of the gravity block 21, and the iron chain can limit the rotation range of the gravity block 21 not to exceed 90 degrees. In order to ensure the strength, the two limit structures can be used simultaneously.

Support one side of casing 22 circumference and be equipped with exhaust hole 22a to install exhaust fan 4 in the position that corresponds exhaust hole 22a, be connected with exhaust interface 3 on the exhaust fan 4, exhaust interface 3 can external dedicated air treatment equipment, after exploding in the studio 11, start exhaust fan 4 and can in time take away the poisonous and harmful gas in the studio 11, and carry to external air treatment equipment through exhaust interface 3 and carry out environmental protection and handle.

For convenient assembly, the support housing 22 and the pressure relief channel 12 are both rectangular frame structures, and the lower end of the support housing 22 is sleeved on the outer end of the pressure relief channel 12. In this embodiment, referring to fig. 2, the outer end of the pressure relief channel 12 is the end exposed out of the top of the test chamber body 1, and the inner end is the end connected to the working chamber 11 inside the test chamber body 1.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides an explosion-proof pressure release structure of double-deck proof box, includes proof box body (1), be equipped with studio (11) and pressure release passageway (12) in proof box body (1), pressure release passageway (12) the inner communicates with studio (11), and the outer end extends to the top of proof box body (1), its characterized in that: pressure relief device (2) are installed at the top of proof box body (1), pressure relief device (2) include gravity piece (21) and support casing (22) that both ends link up from top to bottom, support the lower extreme of casing (22) with the outer end sealing connection of pressure release passageway (12), gravity piece (21) upset is connected in the upper end of supporting casing (22) to seal up with the mode of dead weight pressure release passageway (12), exhaust fan (4) are installed to one side of supporting casing (22), be connected with exhaust interface (3) on exhaust fan (4) for external air treatment equipment.

2. The double-layer test box explosion-proof pressure relief structure according to claim 1, characterized in that: and the position of the supporting shell (22) corresponding to the exhaust fan (4) is provided with an exhaust hole (22 a).

3. The double-layer test box explosion-proof pressure relief structure according to claim 1, characterized in that: one end of the gravity block (21) is rotatably installed at the upper end of the supporting shell (22) through a hinge (23), a limiting block (22b) is arranged at the position, close to the hinge (23), of the supporting shell (22), and the limiting block (22b) protrudes upwards.

4. The double-layer test box explosion-proof pressure relief structure according to claim 1, characterized in that: an iron chain is connected between the inside of the supporting shell (22) and the lower side of the gravity block (21).

5. The double-layer test box explosion-proof pressure relief structure according to claim 1, characterized in that: the support shell (22) and the pressure relief channel (12) are both rectangular frame structures, and the lower end of the support shell (22) is sleeved at the outer end of the pressure relief channel (12).

6. The double-layer test chamber explosion-proof pressure relief structure according to any one of claims 1 to 5, wherein: the test box body (1) is provided with two layers of working chambers (11) which are distributed up and down, and the two layers of working chambers (11) are respectively connected with one pressure relief device (2) through pressure relief channels (12).