CN218957955U

CN218957955U - Novel fire-retardant explosion-proof valve

Info

Publication number: CN218957955U
Application number: CN202222742333.4U
Authority: CN
Inventors: 张余
Original assignee: Dongguan Hengjin Metal Products Co ltd
Current assignee: Dongguan Hengjin Metal Products Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-05-02
Anticipated expiration: 2032-10-18

Abstract

The utility model relates to the technical field of explosion-proof valves, and discloses a novel fire-retarding explosion-proof valve, which comprises a valve shell, wherein a piston is arranged at the top of the valve shell, and a guide rod in threaded connection with the piston is connected in the valve shell in a sliding manner; through on the basis of conventional explosion-proof valve, first shielding plate, second shielding plate and third shielding plate have been specifically designed, use at the cooperation ventilated membrane, make it collect waterproof, ventilative, explosion-proof, fire-retardant multi-functional as an organic wholely, under normal use state, can prevent the dust that produces in the battery package box body of this explosion-proof valve product, particulate matter etc. adsorb, pile up the back influence or damage the normal function of explosion-proof valve, when the accident such as burst explosion, fire, spark etc. discharge back ignites, detonates the vehicle, cause more serious accident, the volume of this fire-retardant explosion-proof valve is little, high low, occupy the space of vehicle is little, simple structure, it is more practical than current explosion-proof valve.

Description

Novel fire-retardant explosion-proof valve

Technical Field

The utility model relates to the technical field of explosion-proof valves, in particular to a novel fire-retarding explosion-proof valve.

Background

With the rapid increase of the electric automobile conservation amount in China, the electric automobile fires and combustion accidents frequently occur, and the safety problem of the electric automobile is always the focus of attention of consumers. Therefore, a series of mandatory national standards are recently issued by related departments, wherein the electric safety requirements and the functional safety requirements of the electric automobile are mainly specified in the electric automobile safety requirements, the requirements on the aspects of water resistance, heat diffusion passenger protection and the like of the whole automobile are enhanced, and the safety risks of the automobile under the conditions of normal use, wading and the like are reduced; aiming at the release and implementation of the mandatory national standard, the method has higher requirements on the aspects of water resistance, explosion resistance and the like of the power system of the new energy automobile.

The safe and reliable operation of core components such as a battery PACK, an electric control and a motor in an electric automobile power system is important. In order to ensure safe and stable operation, the power battery needs to be waterproof and dustproof, namely, in theory, a sealing state is needed, but in the sealing state, when abnormal accidents such as extreme charge and discharge, extreme high temperature, short circuit of the battery core, explosion thermal runaway of the battery core and the like occur, the power battery can cause the gas pressure in the battery pack box to accumulate and rise, and the explosion of the battery core is accompanied, and simultaneously, a large amount of high-temperature mixed gas of solid or gelatinous substances or dust substances can be generated; if the air cannot be timely discharged to the outside of the box body, serious accidents such as deformation, bursting, severe fire, explosion and the like of the box body of the battery pack can occur under normal conditions, and serious casualties and property loss are caused.

Therefore, the existing technical scheme is that a certain number of explosion-proof valves are arranged at different positions of a battery pack box body to meet the waterproof, explosion-proof and pressure relief demands of a power battery system, however, when the air pressure in the battery pack box body is increased and exceeds the opening pressure value of a valve core component of the preset explosion-proof valve, the explosion-proof valves can open an exhaust pressure relief channel, flame, spark and the like generated during explosion of air, gas-solid mixture and battery core in the battery pack box body can rapidly discharge to the outside of the battery pack box body through the exhaust channel, so that inflammables and combustibles in a vehicle are accidentally ignited, more serious loss and result are caused, and in the using process of the existing explosion-proof valves, along with the long-term use of vehicles, the dust and particles generated in the battery pack box body are accumulated at the movable parts of the valve core of the explosion-proof valves, the movable spaces of piston parts in the valve core component can be possibly blocked, so that the piston parts are difficult to open or open the pressure rise, normal functions, the sealability, the explosion-proof valves are hard to open, and the functions of the explosion-proof valves are invalid, and the explosion-proof valves are caused.

Disclosure of Invention

The utility model aims to provide a novel fire-retarding explosion-proof valve, which has the advantage of multiple functions and solves the problem of single function of the traditional explosion-proof valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel fire-retardant explosion-proof valve, includes the valve casing, the top of valve casing is provided with the piston, the inside sliding connection of valve casing has the guide bar with piston threaded connection, the surface cover of guide bar is equipped with reset spring, the ventilated membrane has been placed in the heavy platform at piston top, the clamping has solid fixed ring in the heavy platform at piston top, the piece is inhaled to magnetism has been placed in the heavy platform at piston top, the top bolt at piston top has the valve gap, the inside of valve casing has first shielding plate, second shielding plate and third shielding plate threaded connection respectively, the gas pocket has all been seted up on the surface of first shielding plate, second shielding plate and third shielding plate.

The utility model is further arranged that the top of the valve housing is provided with a first sealing washer, which is used in cooperation with the piston.

The technical scheme is adopted: the piston is sealed.

The utility model further provides that the bottom of the valve housing is provided with a second sealing gasket, and the second sealing gasket is matched with the battery pack box body for use.

The technical scheme is adopted: sealing between the valve housing and the battery case.

The utility model is further characterized in that the surface of the valve shell is integrally processed with the mounting ear, and the top of the mounting ear is provided with a through hole.

The technical scheme is adopted: the explosion-proof valve is convenient to install on the battery box body.

The utility model further provides that the first shielding plate, the second shielding plate and the third shielding plate are made of stainless steel metal.

The technical scheme is adopted: improving the durability thereof.

The utility model is further provided that the centers of the first shielding plate and the second shielding plate are respectively provided with a pore canal matched with the reset spring.

The technical scheme is adopted: it is convenient to provide a passage for the return spring.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the first shielding plate, the second shielding plate and the third shielding plate are specially designed on the basis of a conventional explosion-proof valve, and the waterproof, ventilation, explosion-proof and fire-retardant multifunctional explosion-proof valve is matched with the ventilation film, so that the explosion-proof valve integrates the functions of water resistance, ventilation, explosion prevention, fire resistance and the like, can prevent dust, particles and the like generated in a battery pack box body for installing an explosion-proof valve product from being adsorbed, accumulated and then influencing or damaging the normal functions of the explosion-proof valve in a normal use state, can prevent flames, sparks and the like from being discharged and igniting and detonating vehicles to cause serious accidents in sudden explosion, and has the advantages of small size, low height, small occupied space of vehicles, simple structure and more practicability compared with the conventional explosion-proof valve.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is an exploded view of the structure of the present utility model;

FIG. 4 is a schematic diagram of embodiment 2 of the present utility model;

FIG. 5 is a schematic diagram of embodiment 3 of the present utility model;

FIG. 6 is a schematic diagram of example 4 of the present utility model.

In the figure: 1. a valve cover; 2. a magnetic attraction piece; 3. a fixing ring; 4. a breathable film; 5. a piston; 6. a first sealing gasket; 7. a valve housing; 8. a second sealing gasket; 9. a return spring; 10. a guide rod; 11. a first shielding plate; 12. a second shielding plate; 13. a third shielding plate; 14. air holes; 15. a duct; 16. the ears are mounted.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1, 2 and 3, a novel fire-retarding explosion-proof valve comprises a valve housing 7, wherein a first sealing gasket 6 is arranged at the top of the valve housing 7, the first sealing gasket 6 is matched with a piston 5 for use, the piston 5 is sealed, a second sealing gasket 8 is arranged at the bottom of the valve housing 7, the second sealing gasket 8 is matched with a battery pack box for use, the valve housing 7 and the battery box are sealed, an installation ear 16 is integrally processed on the surface of the valve housing 7, a through hole is formed in the top of the installation ear 16 for facilitating the installation of the explosion-proof valve on the battery box, a piston 5 is arranged at the top of the valve housing 7, a guide rod 10 in threaded connection with the piston 5 is slidingly connected in the valve housing 7, a return spring 9 is sleeved on the surface of the guide rod 10, a breathable film 4 is arranged in a sinking table at the top of the piston 5, a fixing ring 3 is clamped in a sinking table at the top of the piston 5, the sinking table at the top of the piston 5 is internally provided with the magnetic attraction piece 2, the top of the piston 5 is bolted with the valve cover 1, the inside of the valve shell 7 is respectively in threaded connection with the first shielding plate 11, the second shielding plate 12 and the third shielding plate 13, the first shielding plate 11, the second shielding plate 12 and the third shielding plate 13 are made of stainless steel metal, the durability of the sinking table is improved, the centers of the first shielding plate 11 and the second shielding plate 12 are provided with the pore 15 matched with the return spring 9, the return spring 9 is conveniently provided with a passage, and the surfaces of the first shielding plate 11, the second shielding plate 12 and the third shielding plate 13 are provided with the pores 14, and the first shielding plate 11, the second shielding plate 12 and the third shielding plate 13 are specially designed on the basis of a conventional explosion-proof valve, so that the sinking table is waterproof, breathable, explosion-proof, air-proof and air-permeable, the multifunctional explosion-proof valve is characterized in that the multifunctional explosion-proof valve is integrated with fire resistance and the like, dust, particles and the like generated in a battery pack box body for installing the explosion-proof valve product can be prevented from being adsorbed and accumulated to influence or damage the normal functions of the explosion-proof valve under the normal use state, when accidents such as burst explosion and combustion occur, the flame, spark and the like can be prevented from being discharged and then ignited and detonated to a vehicle to cause more serious accidents, and the flame-resistant explosion-proof valve is small in size, low in height, small in occupied space of the vehicle, simple in structure and more practical than the conventional explosion-proof valve.

It should be noted that:

the design mode of half open pore is all adopted to second baffle and third baffle, and the half of second baffle and third baffle open pore is not same half, for example: the second baffle is the left half and the third baffle is the right half.

Referring to fig. 4, the second embodiment of the present utility model employs internal mounting provided with internal screw holes, internal mounting is performed by bolts, and the second embodiment employs a structure in which firestop springs are installed between upper baffles for firestop;

referring to fig. 5, a third embodiment of the present utility model employs a threaded mounting, which is screwed directly onto the mounting plate;

referring to fig. 6, the fourth embodiment of the present utility model employs flange mounting, the outside is fixed with bolts, and no air permeable membrane is required in this embodiment.

The use process is briefly described: under the normal working state, the piston 5 is attached to the first sealing gasket 6 under the action of the reset spring 9, the first sealing gasket 6 is tightly pressed by the piston 5, the gas discharge channel of the explosion-proof valve is sealed, the functions of external dust prevention and water prevention are achieved, at the moment, the gas in and outside the battery pack box body can be freely exchanged through the ventilation membrane 4, and the gas flows from the high-pressure end to the low-pressure end; simultaneously, first shielding plate 11, second shielding plate 12 and third shielding plate 13 can play the effect of shielding and adhesion, avoid the inside dust that produces of battery package box under long-term service environment, movable position that adsorbs between guide bar 10 and valve case 7 such as particulate matter, damage or influence the normal function of explosion-proof valve, under the explosion-proof open state, when the gas pressure in the battery package box is greater than the explosion-proof open pressure of explosion-proof valve, piston 5 separates with the first sealing washer 6 on the valve case 7, and open to outside, the exhaust passage is opened, can exhaust fast at this moment, the pressure release, play the effect of explosion-proof, when the battery package takes place thermal runaway event, the battery package is interior electric core explosion, the high temperature gas in the battery package box can mix other solid matter, together with flame that the electric core deflagration produced, flame, spark, etc. discharges to the external world together with the time, at first, can be through first shielding plate 11 at first, second shielding plate 12 and third shielding plate 13, can be at first, through first shielding plate 11, second shielding plate 12 and third shielding plate 13, can be discharged to the flame, the flame can be discharged to the outside because of serious fire, the accident such as the flame, the flame can take place in the fire-proof, the flame, the fire-proof vehicle can take place, the serious fire, and the fire, etc. is discharged to the fire, and the accident can take place.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel fire-retardant explosion-proof valve, includes valve casing (7), its characterized in that: the top of valve casing (7) is provided with piston (5), the inside sliding connection of valve casing (7) has guide bar (10) with piston (5) threaded connection, the surface cover of guide bar (10) is equipped with reset spring (9), ventilated membrane (4) have been placed in the heavy bench at piston (5) top, clamping has solid fixed ring (3) in the heavy bench at piston (5) top, magnetic attraction piece (2) have been placed in the heavy bench at piston (5) top, the top bolt at piston (5) top has valve gap (1), the inside of valve casing (7) has first shielding plate (11), second shielding plate (12) and third shielding plate (13) threaded connection respectively, gas pocket (14) have all been seted up on the surface of first shielding plate (11), second shielding plate (12) and third shielding plate (13).

2. A novel fire and explosion resistant valve as set forth in claim 1, wherein: the top of the valve housing (7) is provided with a first sealing gasket (6), and the first sealing gasket (6) is matched with the piston (5) for use.

3. A novel fire and explosion resistant valve as set forth in claim 1, wherein: the bottom of the valve shell (7) is provided with a second sealing gasket (8), and the second sealing gasket (8) is matched with the battery pack box body for use.

4. A novel fire and explosion resistant valve as set forth in claim 1, wherein: the surface of the valve shell (7) is integrally processed with a mounting ear (16), and a through hole is formed in the top of the mounting ear (16).

5. A novel fire and explosion resistant valve as set forth in claim 1, wherein: the first shielding plate (11), the second shielding plate (12) and the third shielding plate (13) are made of stainless steel metal.

6. A novel fire and explosion resistant valve as set forth in claim 1, wherein: and the centers of the first shielding plate (11) and the second shielding plate (12) are respectively provided with a pore canal (15) matched with the reset spring (9).