CN217272152U

CN217272152U - Safety device of gas cylinder valve

Info

Publication number: CN217272152U
Application number: CN202123170131.9U
Authority: CN
Inventors: 石瑞君; 仇领光; 孙科
Original assignee: Ningbo Sanan Valve Manufacture Co ltd
Current assignee: Ningbo Sanan Valve Manufacture Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-08-23
Anticipated expiration: 2031-12-13

Abstract

The application discloses safety device of gas cylinder valve includes: the safety hole is communicated with the air inlet channel; the safety assembly comprises a pressure ring and a diaphragm; and the pressure relief piece is detachably arranged in the safety hole, the pressure relief piece can enable the pressure ring to compress the membrane to seal the inlet of the safety hole, the pressure relief hole is formed in the pressure relief piece, the membrane is located at the inlet end of the pressure relief hole, and the outlet end of the pressure relief hole is located in the safety hole. The application aims to provide a gas cylinder valve safe in use, so that when high-pressure gas is discharged from a safety hole, damage to people and objects around the safety hole is reduced.

Description

Safety device of gas cylinder valve

Technical Field

The application relates to the technical field of gas cylinder valves, in particular to a safety device of a gas cylinder valve.

Background

When the pressure in the gas cylinder rises due to filling or other special reasons, the gas cylinder and the upper valve of the gas cylinder are easy to explode, so that a safety device is usually arranged on the gas cylinder valve and can act within a set pressure range, and when the pressure in the gas cylinder exceeds the set pressure, the pressure is released, so that the safety of the gas cylinder and the valve is protected, and the explosion phenomenon is avoided.

The prior art cylinder valve, as shown in fig. 1 and 2, includes a safety assembly composed of a valve body, a pressure ring and a diaphragm, and a pressure relief assembly; a piston is arranged in the valve body and is in sealing contact with the valve body to form a valve; the valve body is internally provided with an air inlet and an air outlet, the safety component is arranged in a safety hole of the valve body, is tightly pressed in the valve body by a thread of the pressure relief component and is directly communicated with the air inlet in the valve body. However, the safety device for a cylinder valve having the above-described structure has the following disadvantages: because the discharge hole opening of the pressure relief piece in the safety device arranged on the valve body is radial, and the discharge hole is positioned outside the valve body, the higher the gas pressure in the bottle is, the higher the discharge pressure of the safety plug discharge hole is, certain impact force is generated on the nearby environment, and the gas cylinder valve is often provided with a pressure gauge, so that the pressure gauge is easily damaged by high-pressure discharge gas; therefore, there is a certain insecurity factor in the actuation of such safety devices.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a gas cylinder valve safe in use, which reduces the damage to people and objects around the safety hole when the safety hole discharges high-pressure gas.

To achieve the above object, the present application provides a safety device of a cylinder valve, including: the safety hole is formed in the valve body of the cylinder valve and communicated with an air inlet channel in the valve body; the safety assembly comprises a pressure ring and a diaphragm; and the pressure relief piece is detachably arranged in the safety hole, the pressure relief piece can enable the pressure ring to tightly press the diaphragm to seal the inlet of the safety hole, the pressure relief piece is provided with a pressure relief hole, the diaphragm is positioned at the inlet end of the pressure relief hole, and the outlet end of the pressure relief hole is positioned in the safety hole.

Compared with the prior art, the beneficial effect of this application lies in: the safety subassembly in this application is fixed through the pressure release piece for clamping ring and diaphragm support tightly in the safety vent, and make the diaphragm be located the entrance point of pressure release hole, when releasing high-pressure gas, high-pressure gas can be blockked by the inner wall of safety vent and cushion, shoulders the gas that safety vent department released, thereby reduces the damage to people, thing around.

As the improvement, the safety vent include the installation department with buffering portion, the installation department be suitable for with the pressure release piece is connected, buffering portion with be formed with buffer passage between the pressure release piece, the gas stream flows through the pressure release hole, and pass through outside the buffer passage discharge valve body, through above-mentioned improvement, the installation department is used for being connected with the pressure release piece, and buffer passage then can provide sufficient buffer space, reduces the pressure in the twinkling of an eye of high-pressure gas release, reduces the impact force outside the high-pressure gas rushes out the safety vent.

As the improvement, set up threadedly on the installation department, but pressure relief piece threaded connection is in on the installation department, through the aforesaid improvement, threaded connection is not only simple convenient connection mode, and fixed effectual, can compress tightly clamping ring and diaphragm under the condition of safety subassembly of preinstallation gradually to reach the required precision of installation.

As an improvement, the outlet end of the pressure relief hole faces the inner wall of the safety hole, and through the improvement, high-pressure gas released from the pressure relief hole can be buffered by the inner wall of the safety hole, so that the impact force of the high-pressure gas rushing out of the safety hole can be remarkably reduced, and external objects or human bodies are prevented from being damaged.

As an improvement, the outlet end of the pressure relief hole is at a right angle with the inner wall of the safety hole, and through the improvement, the outlet end of the pressure relief hole is at a right angle with the inner wall of the safety hole, so that the release pressure at the safety hole can be relieved to the greatest extent in the shortest time.

As the improvement, the quantity of the exit end in pressure release hole is a plurality of, and is a plurality of the exit end in pressure release hole is followed the circumference of pressure release piece is evenly laid, through above-mentioned improvement, through the exit end that sets up a plurality of pressure release holes to the intensity of dispersion single pressure release can further effectually slow down the gas intensity that dashes out in safety hole department.

As an improvement, the free end part of the pressure relief piece is positioned in the safety hole, and through the improvement, the pressure relief piece is completely exposed out of the valve body in the safety device arranged on the valve body, the bottle valve is easy to collide and damage the safety device when being arranged and carried, and the possibility of collision and damage of the exposed end of the pressure relief piece is reduced by hiding part of the pressure relief piece.

As the improvement, the safety hole can be opened under the body surface of the valve body, and through the improvement, the safety hole is opened under the body surface of the valve body, so that the safety hole is convenient to process and install, and the production and installation efficiency is improved.

As the improvement, the boss is arranged on the body surface of the valve body, the safety hole is formed in the boss, and through the improvement, the free end of the pressure relief piece can be hidden to the maximum extent through the boss, so that the possibility that the pressure relief piece is exposed outside the valve body and damaged by collision is avoided.

As the improvement, the connecting passage is arranged in the valve body and is communicated with the air inlet passage and the safety hole respectively, the connecting passage is arranged in an inclined mode relative to the air inlet passage, the connecting passage in the prior art is vertically arranged in the air inlet passage, high-pressure air is blocked easily due to unsmooth circulation when entering the connecting passage through the air inlet passage, so that the pressure inside the valve body is increased, the connecting passage is arranged in an inclined mode relative to the air inlet passage, and therefore when the air flows through the air inlet passage to enter the connecting passage, the air is smooth, and the safety is improved.

Drawings

FIG. 1 is a schematic cross-sectional view showing the overall structure of a cylinder valve according to the prior art;

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

FIG. 3 is a schematic cross-sectional view of the overall structure with the cylinder valve of the present application;

fig. 4 is a partially enlarged schematic view of B in fig. 3.

In the figure: 1. a valve body; 11. an air intake passage; 111. an air inlet; 12. an air outlet channel; 121. an air outlet; 13. a connecting channel; 14. a safety vent; 141. an installation part; 142. a buffer section; 15. a buffer channel; 16. a boss; 21. pressing a ring; 22. a membrane; 3. a piston; 4. releasing the pressure; 41. a pressure relief vent.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the orientation words, such as the terms "central", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, are only for convenience of describing the present application and simplifying the 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 should not be construed as limiting the specific scope of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The application provides a safety device of a gas cylinder valve, as shown in fig. 3 and 4, the safety device comprises a safety hole 14, a safety component and a pressure relief component 4, an air inlet channel 11 and a safety hole 14 are formed in a valve body 1 of the gas cylinder valve, and the air inlet channel 11 is communicated with the safety hole 14; the safety assembly comprises a pressure ring 21 and a diaphragm 22; the pressure relief piece 4 is detachably arranged in the safety hole 14, the pressure relief piece 4 forces the pressure ring 21 to press the diaphragm 22, so that the diaphragm 22 seals the inlet of the safety hole 14, the pressure relief piece 4 is provided with a pressure relief hole 41, the diaphragm 22 is positioned at the inlet end of the pressure relief hole 41, and the outlet end of the pressure relief hole 41 is positioned in the safety hole 14.

Specifically, as shown in fig. 4, the safety hole 14 includes a mounting portion 141 and a buffering portion 142, the mounting portion 141 is adapted to be connected to the pressure relief member 4, a buffering channel 15 is formed between the buffering portion 142 and the pressure relief member 4, and the gas flows through the pressure relief hole 41 and is discharged outside the valve body 1 after being buffered by the buffering channel 15.

Specifically, the mounting portion 141 is provided with a thread, and the pressure relief member 4 can be screwed on the mounting portion 141.

Preferably, the outlet end of the pressure relief hole 41 faces the inner wall of the safety hole 14.

Preferably, the outlet end of the pressure relief hole 41 is at right angle to the inner wall of the safety hole 14, i.e. the outlet direction of the pressure relief hole 41 is in the direction of the inner wall of the safety hole 14

Specifically, as shown in fig. 4, the number of outlet ends of the pressure relief holes 41 is plural, and the outlet ends of the pressure relief holes 41 are uniformly arranged along the circumferential direction of the pressure relief member 4.

Specifically, as shown in fig. 4, the free end of the pressure relief member 4 is located in the safety hole 14, and due to the volume limitations of the pressure relief member 4 and the valve body 1, it is difficult to hide all the pressure relief member 4 in the safety hole 14, so that it is possible to hide a part of the free end of the pressure relief member 4 as much as possible, for example, by providing the boss 16 to achieve the purpose, and it is possible to effectively reduce the possibility that the exposed portion is collided and damaged.

Specifically, the safety hole 14 can be opened under the body surface of the valve body 1, so that the safety hole 14 can be processed more quickly and conveniently, and the production cost and the processing difficulty are reduced.

Preferably, as shown in fig. 4, a boss 16 is disposed on the body surface of the valve body 1, the safety hole 14 is opened in the boss 16, and the boss 16 can effectively increase the depth of the safety hole 14 and is suitable for hiding the tail end of the unsealed pressure relief piece 4.

As shown in fig. 3 and 4, the safety valve further comprises a connecting passage 13 opened in the valve body 1, the connecting passage 13 is respectively communicated with the air inlet passage 11 and the safety hole 14, and the connecting passage 13 is obliquely arranged relative to the air inlet passage 11.

The foregoing has described the principles, principal features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A safety device for a cylinder valve, comprising:

the safety hole is formed in the valve body of the cylinder valve and communicated with an air inlet channel in the valve body;

the safety assembly comprises a pressure ring and a diaphragm; and

the pressure relief piece is detachably arranged in the safety hole, the pressure relief piece can enable the pressure ring to tightly press the diaphragm to seal the inlet of the safety hole, the pressure relief piece is provided with a pressure relief hole, the diaphragm is located at the inlet end of the pressure relief hole, and the outlet end of the pressure relief hole is located in the safety hole.

2. A cylinder valve safety device as defined in claim 1, wherein: the safety hole comprises an installation part and a buffering part, the installation part is suitable for being connected with the pressure relief piece, a buffering channel is formed between the buffering part and the pressure relief piece, and gas flows through the pressure relief hole and is discharged out of the valve body through the buffering channel.

3. A cylinder valve safety device as defined in claim 2, wherein: the installation part is provided with threads, and the pressure relief piece can be connected to the installation part in a threaded mode.

4. A cylinder valve safety device as defined in claim 1, wherein: the outlet end of the pressure relief hole faces the inner wall of the safety hole.

5. A cylinder valve safety device as defined in claim 4, wherein: the outlet end of the pressure relief hole is in a right angle with the inner wall of the safety hole.

6. A cylinder valve safety device as defined in claim 1, wherein: the number of the outlet ends of the pressure relief holes is multiple, and the outlet ends of the pressure relief holes are uniformly distributed along the circumferential direction of the pressure relief piece.

7. A cylinder valve safety device as defined in claim 1, wherein: the free end portion of the bleeder is located within the relief aperture.

8. A cylinder valve safety device as defined in claim 1, wherein: the safety hole can be opened under the body surface of the valve body.

9. A cylinder valve safety device as defined in claim 1, wherein: the safety valve is characterized in that a boss is arranged on the body surface of the valve body, and the safety hole is formed in the boss.

10. A cylinder valve safety device as defined in claim 1, wherein: still including seting up in the connecting channel in the valve body, connecting channel communicates inlet channel and safety vent respectively, connecting channel is relative inlet channel slope sets up.