CN216843290U

CN216843290U - Explosion-proof valve

Info

Publication number: CN216843290U
Application number: CN202121510014.XU
Authority: CN
Inventors: 李恒旭; 孙永刚; 闵忠国; 万家明
Original assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Current assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-06-28
Anticipated expiration: 2031-07-02

Abstract

The utility model provides an explosion-proof valve relates to the explosion-proof technical field of pressure limiting, the utility model provides an explosion-proof valve, include: the valve comprises a valve seat, a valve core and a limiting piece; the valve core is movably arranged on the valve seat, and the limiting part is connected with the valve core; the explosion-proof valve has a first pressure-limiting state and a second pressure-limiting state; under the first pressure limiting state, the valve core is opened relative to the valve seat and drives the limiting piece to abut against the valve seat; at the moment, pressure relief is realized through a channel between the valve core and the valve seat; under the second voltage limiting state, the limiting part falls off from the valve core, the valve core is separated from the valve seat, and therefore the valve seat is not shielded by the valve core any more, the opening is maximized, rapid pressure relief is achieved, and the purpose of improving the pressure relief explosion-proof efficiency is achieved.

Description

Explosion-proof valve

Technical Field

The utility model belongs to the technical field of the explosion-proof technique of voltage limiting and specifically relates to an explosion-proof valve is related to.

Background

The explosion-proof valve usually adopts an explosion-proof membrane, when the pressure reaches a set value, the explosion-proof membrane deforms, and the explosion-proof membrane is broken by utilizing the pressure-resistant limit of the explosion-proof membrane, or a puncture needle punctures the explosion-proof membrane, so that high-pressure gas is released, and the aim of explosion prevention is fulfilled. However, the explosion-proof valve can only act once, and the explosion-proof membrane is used as a disposable article, so that the loss cost is high. Adopt the spring explosion-proof valve can play the effect of balanced inside and outside atmospheric pressure when pressure slowly rises to the in-process does not have the part damaged, however, the spring explosion-proof valve maximum aperture in the past is less, is difficult to reach the purpose of quick pressure release.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof valve to alleviate the technical problem of the unable quick pressure release of explosion-proof valve.

In a first aspect, the utility model provides an explosion-proof valve, include: the valve comprises a valve seat, a valve core and a limiting piece;

the valve core is movably arranged on the valve seat, and the limiting part is connected with the valve core;

the explosion-proof valve has a first pressure-limiting state and a second pressure-limiting state;

under the first pressure limiting state, the valve core is opened relative to the valve seat and drives the limiting piece to abut against the valve seat;

under the second pressure limiting state, the limiting piece falls off from the valve core, and the valve core is separated from the valve seat.

In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the limiting member includes a plastic plug, and the plastic plug is connected to the valve element by a thread.

In combination with the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the explosion-proof valve further comprises an elastic device, the elastic device is installed on the valve seat, and the elastic device has a tendency to move the valve element from the opening station to the closing station.

Combine the possible embodiment of second of the first aspect, the utility model provides a possible embodiment of third of the first aspect, wherein, elastic device includes the pressure spring, and the one end butt of pressure spring is in the disk seat, and the other end butt of pressure spring is in the locating part.

With reference to the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the valve seat is provided with a mounting hole and an outer ring air hole, and the outer ring air hole is surrounded outside the mounting hole;

the valve core is inserted in the mounting hole;

at a sealing station, the valve core plugs the outer ring air hole;

and at the opening station, the valve core is opened from the outer ring air hole.

In combination with the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the valve element includes: the disk comprises a disk body and a diameter body, wherein the diameter body penetrates through the valve seat, one end of the diameter body is connected with the disk body, and the other end of the diameter body is connected with the limiting part.

With reference to the fifth possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein a mounting groove is provided on the disk body, and the radial body is provided with a fluid channel communicated with the mounting groove;

the mounting groove is internally provided with a diaphragm.

With reference to the fifth possible implementation manner of the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein a first sealing element is installed on an end surface of the valve seat opposite to the disk body.

With reference to the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein a second sealing member is mounted on a bottom surface of the valve seat.

In combination with the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein a third sealing member is installed on the valve seat, and the third sealing member is enclosed on the circumferential surface of the valve seat.

The embodiment of the utility model provides a following beneficial effect has been brought: the explosion-proof valve is provided with a first pressure limiting state and a second pressure limiting state, wherein the valve core is movably arranged on the valve seat, the limiting piece is connected with the valve core, the valve core is opened relative to the valve seat under the first pressure limiting state, the limiting piece is driven to abut against the valve seat, and at the moment, the pressure relief is realized through a channel between the valve core and the valve seat; under the second voltage limiting state, the limiting part falls off from the valve core, the valve core is separated from the valve seat, and therefore the valve seat is not shielded by the valve core any more, the opening is maximized, rapid pressure relief is achieved, and the purpose of improving the pressure relief explosion-proof efficiency is achieved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a cross-sectional view of an explosion-proof valve provided by an embodiment of the present invention when a valve core is in a closed station;

fig. 2 is a sectional view of the explosion-proof valve provided by the embodiment of the present invention in a first pressure limiting state;

fig. 3 is a sectional view of the explosion-proof valve provided by the embodiment of the present invention in the second pressure limiting state.

Icon: 100-valve seat; 101-mounting holes; 102-outer ring air holes; 200-a valve core; 210-a tray body; 220-diametric body; 221-a fluid channel; 230-a membrane; 300-a stop; 400-an elastic device; 500-a first seal; 600-a second seal; 700-third seal.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1, fig. 2 and fig. 3, the embodiment of the utility model provides an explosion-proof valve includes: a valve seat 100, a valve element 200, and a stopper 300; the valve core 200 is movably mounted on the valve seat 100, and the limiting member 300 is connected with the valve core 200; the explosion-proof valve has a first pressure-limiting state and a second pressure-limiting state.

In the first pressure limiting state, the valve element 200 is opened relative to the valve seat 100, and drives the limiting member 300 to abut against the valve seat 100.

In the second pressure limiting state, the limiting member 300 falls off from the valve element 200, and the valve element 200 is separated from the valve seat 100.

The explosion-proof valve can be installed at the installation opening of the pressure limiting cavity, when the pressure in the cavity exceeds a safety threshold, the valve core 200 is driven by air pressure, so that the explosion-proof valve is switched to a first pressure limiting state, and in the process, the explosion-proof valve continuously releases pressure. When the air pressure in the cavity exceeds the safety threshold value in a large range, the explosion-proof valve is switched to a second pressure limiting state, the limiting piece 300 falls off from the valve core 200, and the valve core 200 is separated from the valve seat 100, so that the valve core 200 does not shield an air channel on the valve seat 100, the opening degree of the explosion-proof valve is maximized, rapid pressure relief is realized, and the purpose of improving the pressure relief and explosion-proof efficiency is achieved.

It should be noted that, the state switching of the explosion-proof valve can be realized by adopting an electric control mode, so that the explosion-proof valve not only has the quick pressure relief performance of the needling film type explosion-proof valve, but also can be repeatedly used, the damage and consumption of the explosion-proof film can not be generated, and the operation cost of equipment is further reduced.

In the embodiment of the present invention, the position-limiting member 300 includes a plastic plug, and the plastic plug is connected to the valve core 200 by a screw.

When the air pressure in the cavity exceeds the safety threshold value in a large range, the pressure acting on the valve core 200 is increased, and the pressure value is enough to damage the thread of the plastic plug, so that the plastic plug falls off from the valve core 200, the limiting effect of the plastic plug on the valve core 200 is eliminated, the valve core 200 can be ejected from the valve seat 100 under the driving of the air pressure, and the air channel on the valve seat 100 reaches the maximum opening degree.

It should be noted that the plastic plug is a vulnerable device, the requirement on material strength is low, and therefore the cost for replacing the limiting part 300 is far lower than that for replacing the explosion-proof membrane, and the explosion-proof valve can run stably for a long time without energy consumption and low cost without adding a controller and an actuator while having the rapid pressure relief performance of the needle-punched membrane type explosion-proof valve.

Further, the explosion-proof valve further includes an elastic device 400, the elastic device 400 is mounted on the valve seat 100, and the elastic device 400 has a tendency to move the valve cartridge 200 from the opening position to the closing position.

In some embodiments, the resilient member 400 may be used as a force application portion by an external frame or an outer wall of the chamber, so that the resilient force of the resilient member 400 can be applied to the valve core 200 and the valve core 200 tends to the closed position.

In the present embodiment, the elastic device 400 includes a compression spring, one end of which abuts against the valve seat 100, and the other end of which abuts against the stopper 300.

Specifically, the compression spring is sleeved on the radial body 220, one end of the compression spring abuts against the valve seat 100, and the other end of the compression spring abuts against the limiting member 300. Along with the increase of the air pressure in the cavity, the pressure spring is continuously compressed, the valve core 200 is gradually switched to the opening station, and the opening degree is gradually increased. When the pressure in the cavity is too high, the limiting member 300 is damaged and falls off, and the valve core 200 is blown away under the action of pressure difference, so that the explosion-proof valve only leaves the valve seat 100 to be installed at the installation opening of the cavity, and at the moment, the gas channel of the valve seat 100 is fully opened, and rapid air exhaust and pressure relief can be realized.

Further, the valve seat 100 is provided with a mounting hole 101 and an outer ring air hole 102, and the outer ring air hole 102 is surrounded on the outer side of the mounting hole 101;

the valve core 200 is inserted into the mounting hole 101;

at a closing station, the valve core 200 seals the outer ring air hole 102;

in the open position, the valve cartridge 200 opens from the outer annular vent 102.

Specifically, at the closing station, the tray body 210 covers the outer ring air hole 102, so as to close the outer ring air hole 102; at the opening station, the disk 210 is gradually separated from the valve seat 100, a gap is formed between the disk 210 and the top surface of the valve seat 100, and the gap is communicated with the outer annular gas hole 102, so that the gas in the chamber can be discharged outwards through the outer annular gas hole 102.

Further, the valve cartridge 200 includes: the valve comprises a disk body 210 and a radial body 220, wherein the radial body 220 passes through the valve seat 100, one end of the radial body 220 is connected with the disk body 210, and the other end of the radial body 220 is connected with a limiting piece 300. The valve core 200 is assembled with the valve seat 100 compactly, and the radial body 220 slides along the mounting hole 101 of the valve seat 100 without adding other guide devices.

Further, a mounting groove is formed on the disc body 210, and a fluid channel 221 communicated with the mounting groove is formed on the radial body 220;

a diaphragm 230 is mounted in the mounting groove.

Specifically, when the air pressure in the cavity is smaller than a first threshold, the disk 210 blocks the outer annular air hole 102, and the explosion-proof valve balances the air pressure inside and outside the cavity through the diaphragm 230; when the air pressure in the cavity rises and exceeds a first threshold value, the disk body 210 is gradually separated from the valve seat 100, so that the air in the cavity can be exhausted through the outer ring air hole 102, and the pressure relief is realized; when the air pressure in the cavity continues to rise and reaches the second threshold, the limiting member 300 abuts against the valve seat 100, or the elastic force of the elastic device 400 increases, so that the limiting member 300 is damaged and falls off from the valve element 200, the valve element 200 loses the limiting of the limiting member 300, the valve element 200 flies out under the action of the pressure in the cavity, and then the mounting hole 101 and the outer ring air hole 102 are both used as exhaust channels, so that rapid pressure relief can be realized.

Further, the end face of the valve seat 100 opposite to the disc 210 is provided with the first sealing member 500, and in the closing station, the first sealing member 500 is pressed between the valve seat 100 and the disc 210, so that the explosion-proof valve is ensured to be well sealed at the moment.

In addition, the bottom surface of the valve seat 100 is installed with a second sealing member 600, and when the valve seat 100 is installed in the counter bored hole of the chamber wall, the second sealing member 600 is pressed inwardly between the hole shoulder and the valve seat 100, thereby enhancing the sealability between the valve seat 100 and the chamber wall.

Further, a third sealing member 700 is mounted on the valve seat 100, and the third sealing member 700 is disposed around the circumferential surface of the valve seat 100. The third seal 700 may be compressed between the sidewall of the aperture in the chamber wall and the valve seat 100, thereby ensuring that the valve seat 100 seals against the chamber wall junction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An explosion-proof valve, comprising: the valve comprises a valve seat (100), a valve core (200) and a limiting piece (300);

the valve core (200) is movably mounted on the valve seat (100), and the limiting piece (300) is connected with the valve core (200);

under the first pressure limiting state, the valve core (200) is opened relative to the valve seat (100) and drives the limiting piece (300) to abut against the valve seat (100);

and in the second pressure limiting state, the limiting piece (300) falls off from the valve core (200), and the valve core (200) is separated from the valve seat (100).

2. Explosion-proof valve according to claim 1, characterized in that the retaining element (300) comprises a plastic plug which is screwed to the valve cartridge (200).

3. Explosion-proof valve according to claim 1, characterized in that it further comprises elastic means (400), said elastic means (400) being mounted on said valve seat (100) and said elastic means (400) having a tendency to move said valve cartridge (200) from an opening position to a closing position.

4. Explosion-proof valve according to claim 3, characterized in that the elastic means (400) comprise a compression spring, one end of which abuts against the valve seat (100) and the other end of which abuts against the stop (300).

5. Explosion-proof valve according to claim 1, characterized in that the valve seat (100) is provided with a mounting hole (101) and an outer annular air hole (102), the outer annular air hole (102) being enclosed outside the mounting hole (101);

the valve core (200) is inserted into the mounting hole (101);

at a closing station, the valve core (200) blocks the outer ring air hole (102);

and in the opening station, the valve core (200) is opened from the outer ring air hole (102).

6. Explosion-proof valve according to claim 1 or 5, characterized in that the valve cartridge (200) comprises: the valve seat comprises a disc body (210) and a radial body (220), wherein the radial body (220) penetrates through the valve seat (100), one end of the radial body (220) is connected with the disc body (210), and the other end of the radial body (220) is connected with the limiting piece (300).

7. The explosion-proof valve of claim 6 wherein said disc (210) is provided with an installation slot, said radial body (220) is provided with a fluid passage (221) communicating with said installation slot;

a diaphragm (230) is installed in the installation groove.

8. Explosion-proof valve according to claim 6, characterized in that the end face of the valve seat (100) opposite to the disc (210) is fitted with a first seal (500).

9. Explosion-proof valve according to claim 1, characterized in that the bottom surface of the valve seat (100) is fitted with a second seal (600).

10. An explosion-proof valve as claimed in claim 1 wherein a third seal (700) is mounted on the valve seat (100), the third seal (700) being provided around the circumference of the valve seat (100).