CN114607814A

CN114607814A - Safety valve

Info

Publication number: CN114607814A
Application number: CN202011444558.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2022-06-10

Abstract

The application discloses relief valve includes: the valve comprises a valve body, wherein an air inlet channel and an inner cavity are arranged in the valve body, an air inlet is formed at one end of the air inlet channel, an air outlet communicated with the inner cavity is formed in the valve body, and the other end of the air inlet channel is selectively communicated with the inner cavity; the pressure control valve assembly is arranged in the inner cavity, and the pretightening force of the pressure control valve assembly is adjustable; wherein the pressure control valve assembly is configured to open the other end of the inlet passage when the gas pressure in the inlet passage is greater than the preload force and to seal the other end of the inlet passage when the gas pressure in the inlet passage is less than the preload force. The safety valve of this application, because the pretightning force of pressure control valve subassembly can be according to the withstand voltage condition of actual pipeline and the demand regulation pressure value of low reaches pressure, can realize that various scenes are used, the commonality is strong, and is with low costs.

Description

Safety valve

Technical Field

The application relates to the technical field of fluid regulators, in particular to a safety valve.

Background

The safety valve plays a role in safety guarantee for the pressure pipeline as an overpressure relief device of the pressure pipeline, the pressure of the conventional safety valve is not adjustable, the application scene is single, the special valve is special, multi-scene application is not facilitated, and the product research and development cost is high.

Content of application

The present application is directed to solving at least one of the problems in the prior art.

To this end, an object of the present application is to propose a safety valve, the pressure of which is adjustable.

In order to achieve the above object, the present application provides a safety valve including: the valve comprises a valve body, wherein an air inlet channel and an inner cavity are arranged in the valve body, an air inlet is formed at one end of the air inlet channel, an air outlet communicated with the inner cavity is formed in the valve body, and the other end of the air inlet channel is selectively communicated with the inner cavity; the pressure control valve assembly is arranged in the inner cavity, and the pretightening force of the pressure control valve assembly is adjustable; wherein the pressure control valve assembly is configured to open the other end of the inlet passage when the gas pressure in the inlet passage is greater than the preload force and to seal the other end of the inlet passage when the gas pressure in the inlet passage is less than the preload force.

The safety valve of this application, because the pretightning force of pressure control valve subassembly can be according to the withstand voltage condition of actual pipeline and the demand regulation pressure value of low reaches pressure, can realize that various scenes are used, the commonality is strong, and is with low costs.

Further, the valve body includes: the air inlet channel is arranged in the valve shell, and the air inlet is arranged on the valve shell; the valve cover, the valve cover with the valve casing cooperation is in order to inject the inner chamber, be provided with on the valve cover with the inner chamber intercommunication the gas vent, pressure control valve subassembly's one end sets up on the valve cover, pressure control valve subassembly's the other end is often sealed intake passage the other end.

Further, at least part of the valve cover is sleeved on the valve shell and is in threaded fit with the valve shell.

Further, still include: the locating part, the locating part cover is established just be suitable for the restriction on the valve casing the valve gap is in position on the valve casing.

Further, the locating part is constructed as a nut, and the nut is sleeved on the valve casing and is in threaded fit with the outer peripheral surface of the valve casing.

Further, the pressure control valve assembly includes: one end of the elastic piece is abutted against the valve cover; and the sealing element is arranged at the other end of the elastic element and is suitable for normally sealing the other end of the air inlet channel.

Further, the elastic part is a spring, a positioning boss is arranged on the valve cover, and one end of the spring is sleeved on the positioning boss.

Further, the seal includes: one end of the piston is provided with a positioning hole matched with the other end of the spring; and the sealing disc is fixedly connected with the other end of the piston and is suitable for normally sealing the other end of the air inlet channel under the action of the elastic force of the spring.

Further, the inner diameter of the air inlet passage is smaller than that of the inner cavity to define a step surface, and the sealing disk is suitable for normally abutting against the step surface under the action of the elastic force of the spring.

Further, the method also comprises the following steps: the dustproof cover is matched with the valve body in a clamping mode to seal the exhaust port.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a safety valve according to an embodiment of the present application.

Reference numerals:

a safety valve (100) is provided,

the flow of air from the air inlet 101, the air outlet 102,

the valve housing 1 is provided with a valve seat,

the valve cover 2, the positioning boss 21,

the inner cavity 3 is provided with a plurality of inner holes,

the intake passage 4, the other end 41 of the intake passage,

a limiting member 5, an elastic member 6,

the position of the piston 71, the sealing disc 72,

a step surface 8 and a dust cover 9.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A safety valve 100 according to an embodiment of the present application is described below with reference to fig. 1, including: a valve body and a pressure control valve assembly.

Specifically, an air inlet channel 4 and an inner cavity 3 are arranged in the valve body, an air inlet 101 is formed at one end of the air inlet channel, an air outlet 102 communicated with the inner cavity 3 is formed in the valve body, and the other end 41 of the air inlet channel is selectively communicated with the inner cavity 3; the pressure control valve assembly is arranged in the inner cavity 3, and the pretightening force of the pressure control valve assembly is adjustable; wherein the pressure control valve assembly is configured to open the other end 41 of the intake passage when the gas pressure in the intake passage 4 is greater than the preload force and to seal the other end 41 of the intake passage when the gas pressure in the intake passage 4 is less than the preload force.

The existing safety valve is not adjustable in pressure, single in application scene, special for the special valve, not beneficial to multi-scene application and high in product research and development cost.

In the present application, gas enters the gas inlet channel 4 from the gas inlet 101, then flows through the inner cavity 3, and finally is discharged from the gas outlet 102.

Wherein the relief valve 100 effects opening and closing of the intake passage 4 through the pressure control valve assembly. Specifically, when the gas pressure in the gas inlet channel 4 is greater than the pretightening force, the pretightening force of the pressure control valve assembly is not enough to counteract the gas pressure, the gas pushes the pressure control valve assembly towards the inner cavity 3, the pressure control valve assembly is separated from the other end 41 of the gas inlet channel to open the other end 41 of the gas inlet channel, and the gas at the moment can enter from the gas inlet 101, then passes through the gas inlet channel 4 and the inner cavity 3, and finally is discharged from the gas outlet 102; when the gas pressure in the inlet passage 4 is less than the preload force, the gas pressure is not sufficient to open the pressure control valve assembly, which seals the other end 41 of the inlet passage.

The pretightening force in the application can be adjusted, the pretightening force of the pressure control valve assembly is adjusted, so that the size of the gas pressure value is adjusted, the adjustability of the pressure of the safety valve 100 is realized, more situations and scenes can be applied, and the universality is high; in addition, the pressure adjustability of the safety valve 100 can be realized only by adjusting the pretightening force of the pressure control valve assembly, and the safety valve is simple to assemble and low in cost.

According to the safety valve 100 of the application, because the pretightening force of the pressure control valve component can be according to the withstand voltage condition of the actual pipeline and the demand regulation pressure value of the downstream pressure, various scene applications can be realized, the universality is strong, and the cost is low.

According to one embodiment of the application, a valve body comprises: a valve housing 1 and a valve cover 2.

Specifically, an air inlet channel 4 is arranged in the valve casing 1, and an air inlet 101 is arranged on the valve casing 1; the valve cover 2 cooperates with the valve housing 1 to define an inner cavity 3, an exhaust port 102 communicating with the inner cavity 3 is provided on the valve cover 2, and one end of a pressure control valve assembly is provided on the valve cover 2, and the other end of the pressure control valve assembly always seals the other end 41 of the intake passage.

The exhaust port 102 is circumferentially arranged on the valve cover 2, and one end of the pressure control valve assembly is fixed or abutted on the valve cover 2 to apply supporting force; the other end of the pressure control valve assembly seals the other end 41 of the gas inlet channel under the action of a pretightening force, and only when the gas pressure is larger than the pretightening force of the pressure control valve assembly, the other end of the pressure control valve assembly moves towards the cavity under the impact of the gas pressure and opens the blocked gas inlet channel 4.

According to one embodiment of the application, at least part of the valve cap 2 is fitted over the valve housing 1 and threadedly engaged with the valve housing 1.

One end of the pressure control valve component is fixed or supported on the valve cover 2, the valve cover 2 plays a role in supporting the pressure control valve component and discharging gas, the valve cover 2 is fixed with the valve shell 1 through threads, the valve cover 2 is adjusted in a rotating mode, the relative position of the valve cover 2 and the valve shell 1 is adjusted to achieve adjustment of the pretightening force of the pressure control valve component, and then the function of adjusting the opening pressure value of the safety valve 100 is achieved.

According to an embodiment of the present application, the safety valve 100 further comprises: and the limiting part 5 is sleeved on the valve shell 1, and is suitable for limiting the position of the valve cover 2 on the valve shell 1.

Locating part 5 is installed between valve casing 1 and valve gap 2, and the dominant role is the position of locking valve gap 2, and relative position between control valve casing 1 and the valve gap 2, also be exactly the size of fixed pretightning force, guarantee that the screw interface department of valve gap 2 and valve casing 1 does not take place to become flexible.

Preferably, the limiting element 5 is configured as a nut which is fitted over the valve housing 1 and is in threaded engagement with the outer circumferential surface of the valve housing 1.

According to one embodiment of the present application, a pressure control valve assembly includes: an elastic member 6 and a sealing member.

Specifically, one end of the elastic piece 6 is abutted against the valve cover 2; a sealing member is provided at the other end of the elastic member 6 and adapted to normally seal the other end 41 of the intake passage.

The elastic piece 6 can provide pre-tightening force, one end of the elastic piece 6 is abutted against the valve cover 2, and the elastic piece 6 is adjusted and compressed through the rotation of the valve cover 2 on the threads; the sealing member is always pressed against the other end 41 of the intake passage by the restoring force of the elastic member 6 for sealing the intake passage 4.

According to one embodiment of the present application, the elastic member 6 is configured as a spring, and the valve cap 2 is provided with a positioning boss 21, and an end of the spring is sleeved on the positioning boss 21.

According to one embodiment of the application, a seal comprises: a piston 71 and a sealing disc 72.

Specifically, one end of the piston 71 is provided with a positioning hole matched with the other end of the spring; the sealing disc 72 is fixedly connected with the other end of the piston 71 and is adapted to always seal the other end 41 of the intake passage under the elastic force of the spring.

The other end of the spring is fixed to the piston 71, and the piston 71 is moved by the extension of the spring. Preferably, the piston 71 may have a positioning hole, and the spring is inserted into the positioning hole for fixing. The sealing disc 72 is fixed at the other end of the piston 71, and the spring drives the piston 71 to move, so that the sealing disc 72 can be driven to move, and the other end 41 of the air inlet channel is sealed under the action of the restoring force of the spring.

According to an embodiment of the present application, the inner diameter of the inlet passage 4 is smaller than the inner diameter of the inner cavity 3 to define a step surface 8, and the sealing disc 72 is adapted to normally abut against the step surface 8 under the elastic force of the spring.

The diameter of the sealing disc 72 may be greater than or equal to the inner diameter of the inlet channel 4 so that the other end 41 of the inlet channel is completely sealed. In order to facilitate the use of the safety valve, the other end 41 of the air inlet channel is not blocked by the sealing disc 72 and is not disabled due to the fact that the other end 41 of the air inlet channel is not inclined due to uneven spring thrust when the other end 41 of the air inlet channel is opened to the other end 41 of the air inlet channel, the diameter of the sealing disc 72 is designed to be larger than the inner diameter of the air inlet channel 4, and therefore even if errors exist in the position of the sealing disc 72 in the blocking process, the normal use of the safety valve 100 is not affected.

According to an embodiment of the present application, the safety valve 100 further comprises: and the dust cover 9 is matched with the valve body in a clamping way to seal the exhaust port 102.

The dust cover 9 is made of plastic materials, plays a role in dust prevention, and prevents dust from entering the inner cavity 3 through the exhaust port 102 of the valve cover 2, so that the spring is damaged. The dust cap 9 is connected with the valve cap 2 in a snap-fit manner, and when the safety valve 100 is started, the dust cap 9 is pushed open by gas pressure. The front end of the dust cover 9 can be provided with a cross-shaped scratch buckle to prevent the dust cover 9 from being too far away or being damaged by high-pressure gas under the impact of the high-pressure gas.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A safety valve, comprising:

the air inlet valve comprises a valve body, wherein an air inlet channel (4) and an inner cavity (3) are arranged in the valve body, an air inlet (101) is formed at one end of the air inlet channel, an air outlet (102) communicated with the inner cavity (3) is formed in the valve body, and the other end (41) of the air inlet channel is selectively communicated with the inner cavity (3);

the pressure control valve assembly is arranged in the inner cavity (3) and the pretightening force of the pressure control valve assembly is adjustable; wherein

The pressure control valve assembly is configured to open the other end (41) of the intake passage (4) when the gas pressure in the intake passage is greater than the preload force, and to seal the other end (41) of the intake passage (4) when the gas pressure in the intake passage is less than the preload force.

2. The safety valve of claim 1, wherein the valve body comprises:

the air inlet channel (4) is arranged in the valve shell (1), and the air inlet (101) is formed in the valve shell (1);

valve gap (2), valve gap (2) with valve casing (1) cooperation is in order to inject inner chamber (3), be provided with on valve gap (2) with inner chamber (3) intercommunication gas vent (102), pressure control valve subassembly's one end sets up on valve gap (2), pressure control valve subassembly's the other end is often sealed intake passage the other end (41).

3. A safety valve according to claim 2, characterized in that at least part of the valve cover (2) is fitted over the valve housing (1) and is screw-engaged with the valve housing (1).

4. The safety valve of claim 3, further comprising: locating part (5), locating part (5) cover is established on valve casing (1) and be suitable for the restriction valve gap (2) is in position on valve casing (1).

5. A safety valve according to claim 4, characterized in that the limiting element (5) is configured as a nut which is fitted over the valve housing (1) and which is in threaded engagement with the outer circumferential surface of the valve housing (1).

6. The safety valve of claim 2, wherein the pressure control valve assembly comprises:

one end of the elastic piece (6) is abutted against the valve cover (2);

a sealing member provided at the other end of the elastic member (6) and adapted to normally seal the other end (41) of the intake passage.

7. The safety valve according to claim 6, characterized in that the elastic member (6) is configured as a spring, and a positioning boss (21) is provided on the valve cover (2), and an end of the spring is fitted over the positioning boss (21).

8. The safety valve of claim 7, wherein the seal comprises:

one end of the piston (71) is provided with a positioning hole matched with the other end of the spring;

and the sealing disc (72) is fixedly connected with the other end of the piston (71) and is suitable for normally sealing the other end (41) of the air inlet channel under the action of the elastic force of the spring.

9. The safety valve according to claim 7, characterized in that the internal diameter of the inlet channel (4) is smaller than the internal diameter of the internal cavity (3) to define a step surface (8), the sealing disc (72) being adapted to normally rest against the step surface (8) under the action of the spring force of the spring.

10. The safety valve of claim 1, further comprising: the dustproof cover (9), the dustproof cover (9) with valve body joint cooperation is in order to seal gas vent (102).