CN215831239U

CN215831239U - Pressure regulating valve

Info

Publication number: CN215831239U
Application number: CN202121933215.0U
Authority: CN
Inventors: 张树元
Original assignee: Huaze Engineering Technology Tianjin Co ltd
Current assignee: Huaze Engineering Technology Tianjin Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-02-15
Anticipated expiration: 2031-08-18

Abstract

The utility model relates to the technical field of valves and discloses a pressure regulating valve. The pressure regulating valve comprises a first valve body, a second valve body and a regulating assembly, wherein the first valve body is provided with a circulation cavity, the circulation cavity is configured to circulate natural gas to be conveyed, the second valve body is installed in the first valve body and communicated with the atmosphere, the regulating assembly comprises a regulating valve body, a valve core and an air cylinder, a plurality of circulation holes are formed in the regulating valve body, the regulating valve body can be communicated with the circulation cavity through the circulation holes, the regulating valve body is communicated with an opening of a conveying pipeline, the air cylinder is installed in the second valve body, a telescopic end of the air cylinder is connected with the valve core, the valve core is slidably arranged in the second valve body and the regulating valve body, and the valve core can block part of the circulation holes. The second valve body is communicated with the atmosphere, so that the atmosphere can be rapidly supplemented into the second valve body in the process of extending the telescopic end of the cylinder, the pressure difference on two sides of the valve core is reduced, the probability of damage to the valve core and the cylinder is reduced, and the service life of the pressure regulating valve is prolonged.

Description

Pressure regulating valve

Technical Field

The utility model relates to the technical field of valves, in particular to a pressure regulating valve.

Background

In the process of transporting natural gas, the natural gas at the outlet is often required to be output after being adjusted to the specified standard gas pressure. In the prior art, a pressure regulating valve is usually disposed at an outlet of a conveying pipeline to regulate the pressure of natural gas. The pressure regulating valve regulates the flow of natural gas by regulating the size of the flow area so as to realize the purpose of pressure regulation. However, the pressure regulating valve is easily damaged due to a large difference between the internal pressure and the external pressure between the delivery pipe and the pressure regulating valve, and the service life of the pressure regulating valve is shortened.

Therefore, it is desirable to provide a pressure regulating valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a pressure regulating valve, which solves the problem of a conventional pressure regulating valve that the service life is shortened due to a large difference between the internal pressure and the external pressure of a delivery pipe and the pressure regulating valve.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a pressure regulating valve, comprising:

a first valve body having a flow-through chamber configured to flow natural gas to be delivered;

a second valve body installed in the first valve body, the second valve body communicating with the atmosphere;

the adjusting assembly comprises an adjusting valve body, a valve core and an air cylinder, wherein a plurality of circulation holes are formed in the adjusting valve body, the adjusting valve body can be communicated with the circulation cavity through the circulation holes, the adjusting valve body is communicated with the opening of the conveying pipeline, the air cylinder is installed in the second valve body, the telescopic end of the air cylinder is connected with the valve core, the valve core is slidably arranged in the second valve body and the adjusting valve body, and the valve core can block part of the circulation holes.

Furthermore, the valve core comprises a solid valve core and a hollow valve core, the solid valve core and the hollow valve core are fixedly connected, the telescopic end of the air cylinder is connected with the solid valve core, and the solid valve core and the hollow valve core can block part of the circulation hole.

Furthermore, the adjusting component also comprises a connecting rod, the telescopic end of the air cylinder is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the solid valve core.

Further, the hollow valve core is provided with a hollow cavity, and the connecting rod penetrates through the hollow cavity.

Further, the second valve body is provided with a sliding cavity, the regulating valve body is communicated with the sliding cavity, and the solid valve core and the hollow valve core are slidably arranged in the sliding cavity and the regulating valve body.

Further, the pressure regulating valve also comprises a balance pipe, one end of the balance pipe is communicated with the second valve body, and the other end of the balance pipe is communicated with the atmosphere.

Further, the number of the balance pipes is two, and the two balance pipes are respectively arranged on two sides of the second valve body and are symmetrically arranged.

Further, the pressure regulating valve further comprises a third valve body, the third valve body is provided with an output cavity, the third valve body is installed on the first valve body, the regulating valve body is communicated with the output cavity, and the output cavity is communicated with the opening of the conveying pipeline.

The utility model has the beneficial effects that:

the utility model provides a pressure regulating valve which comprises a first valve body, a second valve body and a regulating assembly, wherein the first valve body is provided with a circulation cavity, the circulation cavity is configured to circulate natural gas to be conveyed, the second valve body is arranged in the first valve body, the second valve body is communicated with the atmosphere, the regulating assembly comprises a regulating valve body, a valve core and a cylinder, a plurality of circulation holes are formed in the regulating valve body, the regulating valve body can be communicated with the circulation cavity through the circulation holes, the regulating valve body is communicated with an opening of a conveying pipeline, the cylinder is arranged in the second valve body, a telescopic end of the cylinder is connected with the valve core, the valve core is slidably arranged in the second valve body and the regulating valve body, and the valve core can block part of the circulation holes. The natural gas to be conveyed enters the circulation cavity, enters the regulating valve body through the circulation hole and is conveyed to the opening of the conveying pipeline. The telescopic end of the cylinder extends to drive the valve core to slide, so that the number of the valve core for plugging the circulation holes is adjusted, the circulation area and the flow of the natural gas to be conveyed are changed, and the purpose of adjusting the air pressure is achieved. The second valve body is communicated with the atmosphere, so that the atmosphere can be rapidly supplemented into the second valve body in the process of extending the telescopic end of the cylinder, the pressure difference on two sides of the valve core is reduced, the probability of damage to the valve core and the cylinder is reduced, and the service life of the pressure regulating valve is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic diagram of a pressure regulating valve according to an embodiment of the present invention;

fig. 2 is a partial structural schematic diagram of an adjusting assembly provided in the embodiment of the present invention.

In the figure:

1-a first valve body; 2-a second valve body; 3-a regulating component; 4-a third valve body; 5-a balance tube;

11-a flow-through chamber; 21-a sliding cavity; 31-regulating the valve body; 32-a valve core; 33-a cylinder; 34-a connecting rod; 41-an output cavity;

311-flow-through holes; 321-a solid spool; 322-a hollow valve core; 323-hollow cavity.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-2, the present embodiment provides a pressure regulating valve, which includes a first valve body 1, a second valve body 2 and a regulating assembly 3, wherein the first valve body 1 has a circulation chamber 11, the circulation chamber 11 is configured to circulate natural gas to be delivered, the second valve body 2 is installed in the first valve body 1, the second valve body 2 is communicated with the atmosphere, the regulating assembly 3 includes a regulating valve body 31, a valve core 32 and a cylinder 33, a plurality of circulation holes 311 are opened on the regulating valve body 31, the regulating valve body 31 can be communicated with the circulation chamber 11 through the circulation holes 311, the regulating valve body 31 is communicated with an opening of a delivery pipe, the cylinder 33 is installed in the second valve body 2, a telescopic end of the cylinder 33 is connected with the valve core 32, the valve core 32 is slidably disposed in the second valve body 2 and the regulating valve body 31, and the valve core 32 can block part of the circulation holes 311. The natural gas to be delivered enters the circulation cavity 11, enters the regulating valve body 31 through the circulation hole 311, and is delivered to the opening of the delivery pipeline. The telescopic end of the cylinder 33 extends to drive the valve core 32 to slide, so that the number of the valve core 32 for plugging the flow holes 311 is adjusted, the flow area and the flow rate of the natural gas to be conveyed are changed, and the purpose of adjusting the air pressure is achieved. The second valve body 2 is communicated with the atmosphere, so that the atmosphere can be quickly supplemented into the second valve body 2 in the process of extending the telescopic end of the cylinder 33, the pressure difference on two sides of the valve core 32 is reduced, the probability of damage to the valve core 32 and the cylinder 33 is reduced, and the service life of the pressure regulating valve is prolonged.

As shown in fig. 1, the pressure regulating valve further includes a balance pipe 5, and one end of the balance pipe 5 communicates with the second valve body 2 and the other end communicates with the atmosphere. The provision of the equalizing tube 5 allows the second valve body 2 to communicate with the atmosphere, so that the pressure inside the second valve body 2 is equal to the atmospheric pressure, in order to adjust the pressure difference across the valve element 32.

Further, the number of the balance pipes 5 is two, and the two balance pipes 5 are respectively arranged on two sides of the second valve body 2 and are symmetrically arranged.

Further, the pressure regulating valve further comprises a third valve body 4, the third valve body 4 has an output chamber 41, the third valve body 4 is mounted on the first valve body 1, the regulating valve body 31 communicates with the output chamber 41, and the output chamber 41 communicates with the opening of the delivery pipe.

As shown in fig. 1 and 2, the valve core 32 includes a solid valve core 321 and a hollow valve core 322, the solid valve core 321 and the hollow valve core 322 are fixedly connected, the telescopic end of the cylinder 33 is connected with the solid valve core 321, and both the solid valve core 321 and the hollow valve core 322 can block part of the flow through holes 311. The solid valve core 321 and the hollow valve core 322 are matched with each other, so that the weight of the valve core 32 is reduced while the flow hole 311 is partially blocked, and the sliding of the valve core 32 is facilitated.

Further, the adjusting assembly 3 further comprises a connecting rod 34, the telescopic end of the cylinder 33 is connected with one end of the connecting rod 34, and the other end of the connecting rod 34 is connected with the solid valve core 321.

Further, the hollow spool 322 has a hollow cavity 323, and the connecting rod 34 passes through the hollow cavity 323 and is connected to the solid spool 321.

Further, the second valve body 2 has a slide chamber 21, the regulator valve body 31 communicates with the slide chamber 21, and both the solid spool 321 and the hollow spool 322 are slidably disposed in the slide chamber 21 and in the regulator valve body 31. The solid valve core 321 is arranged, so that the sliding cavity 21 is isolated from the inner cavity of the regulating valve body 31, natural gas to be conveyed is prevented from entering the sliding cavity 21, the sliding of the valve core 32 is not affected, and the pressure regulation is not affected. Specifically, one end of the balance pipe 5 protrudes into the slide chamber 21.

In order to adjust the air pressure in the sliding cavity 21, a valve can be arranged on the balance pipe 5 to adjust the air inflow of the atmosphere, so that the pressure difference on two sides of the valve core 32 can be conveniently adjusted, the probability of damage to the valve core 32 and the air cylinder 33 is reduced, and the service life of the pressure adjusting valve is prolonged.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pressure regulating valve, comprising:

a first valve body (1) having a recirculation chamber (11), the recirculation chamber (11) being configured to circulate natural gas to be transported;

a second valve body (2) mounted in the first valve body (1), the second valve body (2) being in communication with the atmosphere;

the adjusting assembly (3) comprises an adjusting valve body (31), a valve core (32) and an air cylinder (33), wherein a plurality of circulation holes (311) are formed in the adjusting valve body (31), the adjusting valve body (31) can be communicated with the circulation cavity (11) through the circulation holes (311), the adjusting valve body (31) is communicated with an opening of a conveying pipeline, the air cylinder (33) is installed in the second valve body (2), the telescopic end of the air cylinder (33) is connected with the valve core (32), the valve core (32) is slidably arranged in the second valve body (2) and the adjusting valve body (31), and the valve core (32) can block part of the circulation holes (311).

2. The pressure regulating valve according to claim 1, characterized in that the valve core (32) comprises a solid valve core (321) and a hollow valve core (322), the solid valve core (321) and the hollow valve core (322) are fixedly connected, the telescopic end of the cylinder (33) is connected with the solid valve core (321), and both the solid valve core (321) and the hollow valve core (322) can block part of the flow hole (311).

3. The pressure regulating valve according to claim 2, characterized in that the regulating assembly (3) further comprises a connecting rod (34), the telescopic end of the cylinder (33) is connected with one end of the connecting rod (34), and the other end of the connecting rod (34) is connected with the solid spool (321).

4. The pressure regulating valve according to claim 3, wherein said hollow spool (322) has a hollow cavity (323), said connecting rod (34) passing through said hollow cavity (323).

5. A pressure regulating valve according to claim 2, characterized in that said second valve body (2) has a sliding chamber (21), said regulating valve body (31) communicates with said sliding chamber (21), said solid spool (321) and said hollow spool (322) are slidably arranged both in said sliding chamber (21) and in said regulating valve body (31).

6. A pressure regulating valve according to claim 1, characterized in that it further comprises a balance tube (5), one end of said balance tube (5) being in communication with said second valve body (2) and the other end being in communication with the atmosphere.

7. The pressure regulating valve according to claim 6, characterized in that the number of said balance pipes (5) is two, and two said balance pipes (5) are respectively arranged at two sides of said second valve body (2) and symmetrically arranged.

8. A pressure regulating valve according to claim 1, characterized in that it further comprises a third valve body (4), said third valve body (4) having an output chamber (41), said third valve body (4) being mounted on said first valve body (1), said regulating valve body (31) communicating with said output chamber (41), said output chamber (41) communicating with the opening of a delivery conduit.