CN215215253U

CN215215253U - Gas-supply pipeline safety valve for gas

Info

Publication number: CN215215253U
Application number: CN202023215707.4U
Authority: CN
Inventors: 郑雯
Original assignee: Gu'an Shuocheng Gas Co ltd
Current assignee: Gu'an Shuocheng Gas Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-17
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a gas-supply line safety valve for gas, including admission line, pressure release pipeline, main valve and pilot valve, it has a pair of ring flange to communicate respectively on the main valve, a pair of the ring flange is connected with admission line and pressure release pipeline respectively, be equipped with the extension board on the main valve and be connected with the pilot valve, main valve top air chamber and pilot valve slide valve upper end opening and be equipped with a pair of regulation formula connection structure respectively between main valve admission line one side and the pilot valve slide valve bottom opening; the utility model relates to a gas pipeline technical field, this gas-supply line safety valve for gas, simple structure, it is convenient to connect, adjusts through the regulation formula connection structure that can stretch out and draw back the regulation, connects the main valve and the pilot valve of pilot operated safety valve, and through the mode of this kind of hard connection, when guaranteeing the flow through rate, furthest's increase scavenge pipe receives the crushing resistance of impact force in the use, avoids influencing the safety monitoring and the pressure release operation of gas-supply line.

Description

Gas-supply pipeline safety valve for gas

Technical Field

The utility model relates to a gas pipeline technical field specifically is a gas-supply line safety valve for gas.

Background

The gas transmission pipeline is a channel for transmitting gas, and in the use process of the gas, in order to ensure that the problems of leakage and the like are not generated, a safety valve is usually used, the safety valve is a special valve, wherein the safety valve is in a normally closed state under the action of external force of an opening and closing piece, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of the system.

The existing gas transmission pipeline safety valve is a multi-purpose pilot safety valve, and the pilot safety valve is generally divided into a main valve and a pilot valve in the using process, the pilot valve plays a role of controlling the opening and closing of the main valve in the using process of the main valve, and the existing safety valve needs to be installed and debugged in the using process of the pilot valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a gas-supply line safety valve for gas has solved current background technical problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a gas pipeline safety valve for gas comprises a gas inlet pipeline, a pressure relief pipeline, a main valve and a pilot valve, wherein the main valve is respectively communicated with a pair of flanges, the pair of flanges are respectively connected with the gas inlet pipeline and the pressure relief pipeline, the main valve is provided with a support plate connected with the pilot valve, and a pair of adjusting connecting structures are respectively arranged between a top gas chamber of the main valve and an upper end opening of a pilot valve slide valve and between one side of the gas inlet pipeline of the main valve and a bottom opening of the pilot valve slide valve;

the regulation formula connection structure includes: the device comprises a pressure regulating pipe, a pair of connecting nuts, a pair of connecting pipes, a plurality of sliding chutes, corner joints and a plurality of sliding blocks;

the main valve top communicates with the pressure regulating pipe that has external screw thread structure with the air chamber in, pilot valve slide valve top opening is equipped with the control tube of external screw thread structure, and is a pair of on pressure regulating pipe and the control tube are located to coupling nut cover respectively, and is a pair of connecting pipe extends respectively on the coupling nut, and is a pair of the connecting pipe is fitted with a contraceptive ring and is equipped with a plurality of spouts, turning articulate in a pair of on the connecting pipe, turning articulate is 90 return bend, and turning joint both ends inboard is encircled respectively and is equipped with a plurality of sliders and assembles in a plurality of in the spout.

Preferably, the corner joint is connected with an adjusting screw in a threaded manner, and the bottom end of the adjusting screw is attached to the outer wall of the connecting pipe.

Preferably, a pressure relief hole is formed in the pilot valve and above the sliding cavity.

Preferably, the plurality of sliding blocks are of triangular structures, and the end parts of the plurality of sliding blocks extend out of the end parts of the corner joints respectively.

Preferably, a pair of sealing sleeves is respectively arranged at two ends of the corner joint and sleeved on the plurality of sliding blocks.

Preferably, the end parts of the pair of connecting pipes are respectively provided with an internal thread structure, and the pair of connecting pipes are connected with a pair of limiting plates in an internal thread manner and are attached to the outer sides of the plurality of sliding chutes.

Advantageous effects

The utility model provides a gas-supply line safety valve for gas. The method has the following beneficial effects: this gas-supply line safety valve for gas, simple structure, it is convenient to connect, adjusts through the regulation formula connection structure that can stretch out and draw back the regulation, connects the main valve and the pilot valve of pilot operated safety valve, and through this kind of mode of hard joint, when guaranteeing the flow through rate, furthest's increase pipeline of taking a breath suffers the crushing resistance of impact force in the use, avoids influencing the safety monitoring and the pressure release operation of gas-supply line.

Drawings

Fig. 1 is a schematic view of a gas pipeline safety valve for gas.

Fig. 2 is the utility model discloses a gas-supply line safety valve's local front view sectional structure schematic diagram for gas.

Fig. 3 is the utility model discloses a gas-supply line safety valve's part looks sideways at sectional structure schematic diagram.

Fig. 4 is a schematic diagram of a partially enlarged structure of the gas transmission line safety valve shown in fig. 1 of the present invention.

In the figure: 1. an air intake duct; 2. a pressure relief duct; 3. a main valve; 4. a pilot valve; 5. a pressure regulating pipe; 6. an adjusting tube; 7. a connecting nut; 8. a connecting pipe; 9. a chute; 10. a corner joint; 11. a slider; 12. an adjusting screw; 13. sealing sleeves; 14. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious 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.

All the electrical components in the present application are connected with the power supply adapted to the electrical components through a wire, and an appropriate controller and an appropriate encoder should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.

Example (b): according to the attached drawings 1-4 of the specification, the present application is a gas pipeline safety valve for gas, comprising a gas inlet pipeline 1, a pressure relief pipeline 2, a main valve 3 and a pilot valve 4, wherein the main valve 3 is respectively communicated with a pair of flanges which are respectively connected with the gas inlet pipeline 1 and the pressure relief pipeline 2, the main valve 3 is provided with a support plate connected with the pilot valve 4, a pair of adjusting connecting structures are respectively arranged between a top air chamber of the main valve 3 and an upper end opening of a slide valve of the pilot valve 4 and between one side of the gas inlet pipeline 1 of the main valve 3 and a bottom end opening of the slide valve of the pilot valve 4, in the specific implementation process, the pilot valve 4 is fixed through the support plate on the main valve 3, the main valve 3 is connected with the gas inlet pipeline 1 and the pressure relief pipeline 2, the top air chamber of the main valve 3 is connected with the top end opening of the slide valve 4, the lower end of the main valve 3 is communicated with the bottom end of the pilot valve 4, when the pressure is normal, the gas in the gas inlet pipeline 1 firstly enters the lower part of the pilot valve 4 and enters the gas chamber at the top end of the main valve 3 through the pilot valve 4, so that the top gas chamber presses down the valve core to seal the pressure relief pipeline 2, when the pressure is suddenly increased, the slide valve of the pilot valve 4 is displaced, the pressure of the pilot valve 4 is further relieved, the pressure of the top gas chamber is reduced, the pressure relief gas is discharged from the pressure relief pipeline 2, and the pressure of the main gas transmission pipeline is reduced;

as can be seen from fig. 1 to 4 of the specification, the adjustable connecting structure comprises: the device comprises a pressure regulating pipe 5, a regulating pipe 6, a pair of connecting nuts 7, a pair of connecting pipes 8, a plurality of sliding chutes 9, corner joints 10 and a plurality of sliding blocks 11, wherein the connection relation and the position relation are as follows;

the top end of a main valve 3 is communicated with a pressure regulating pipe 5 with an external thread structure in an air chamber, an adjusting pipe 6 with an external thread structure is arranged at a through hole above a slide valve of a pilot valve 4, a pair of connecting nuts 7 are respectively sleeved on the pressure regulating pipe 5 and the adjusting pipe 6, a pair of connecting pipes 8 are respectively extended from the pair of connecting nuts 7, a plurality of sliding chutes 9 are annularly arranged on the pair of connecting pipes 8, a corner joint 10 is connected to the pair of connecting pipes 8, the corner joint 10 is a 90-degree bent pipe, and a plurality of sliding blocks 11 are respectively annularly arranged on the inner sides of two ends of the corner joint 10 and assembled in the plurality of sliding chutes 9;

in the concrete implementation process, be equipped with a pair of adjusting nut on pressure regulating pipe 5 and the control tube 6 respectively, be used for fixed a pair of connecting pipe 8, a pair of connecting pipe 8 is fitted with a contraceptive ring and is equipped with a plurality of spouts 9, turning joint 10 both ends respectively with a pair of connecting pipe 8 interconnect, a plurality of sliders 11 that connect 10 tip through the turning assemble in a plurality of spouts 9, and then wrap up connecting pipe 8, and then fix connecting pipe 8 at the tip interconnect that the turning connects 10, connect 10 through the slip turning during use, it connects 10 to adjust the turning and makes a pair of connecting pipe 8 reach the requirement that accords with the mounted position respectively.

Preferably, an adjusting screw 12 is screwed to the corner joint 10, the bottom end of the adjusting screw 12 is attached to the outer wall of the connecting pipe 8, and the corner joint 10 is further fixed by the adjusting screw 12.

Preferably, a relief hole is provided in the pilot valve 4 above the spool chamber, and when relief is performed, the pressure in the air chamber at the tip of the main valve 3 is discharged by conduction, and the spool of the main valve 3 is moved upward.

Preferably, the plurality of sliding blocks 11 are triangular structures, and end portions of the plurality of sliding blocks 11 extend out of end portions of the corner joints 10 respectively.

Preferably, a pair of sealing sleeves 13 is disposed at two ends of the corner joint 10 and sleeved on the plurality of sliding blocks 11, respectively, for sealing the ends of the corner joint 10.

Preferably, the ends of the pair of connecting pipes 8 are respectively provided with an internal thread structure, and the pair of connecting pipes 8 are connected with a pair of limiting plates 14 in an internal thread manner, and the limiting plates are attached to the outer sides of the plurality of sliding grooves 9 and used for limiting the sliding grooves 9 and preventing the sliding blocks 11 from slipping off the corner joints 10.

In summary, the gas pipeline safety valve for gas has a simple structure and is convenient to connect, the main valve 3 and the pilot valve 4 of the pilot safety valve are connected by adjusting through a telescopic adjustable connecting structure, and the pressure resistance of the ventilation pipeline subjected to impact force in the use process is increased to the maximum extent while the flow rate is ensured by the hard connection mode, so that the safety monitoring and pressure relief operation of the gas pipeline are prevented from being influenced.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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

Claims

1. A gas pipeline safety valve for gas comprises a gas inlet pipeline (1), a pressure relief pipeline (2), a main valve (3) and a pilot valve (4), wherein the main valve (3) is respectively communicated with a pair of flanges which are respectively connected with the gas inlet pipeline (1) and the pressure relief pipeline (2), the main valve (3) is provided with a support plate connected with the pilot valve (4), and the gas pipeline safety valve is characterized in that a pair of adjusting connecting structures are respectively arranged between a top air chamber of the main valve (3) and an upper end opening of a slide valve of the pilot valve (4) and between one side of the gas inlet pipeline (1) of the main valve (3) and a bottom opening of the slide valve of the pilot valve (4);

the regulation formula connection structure includes: the device comprises a pressure regulating pipe (5), a regulating pipe (6), a pair of connecting nuts (7), a pair of connecting pipes (8), a plurality of sliding chutes (9), corner joints (10) and a plurality of sliding blocks (11);

main valve (3) top and air chamber in-connection have external screw thread structure's pressure regulating pipe (5), pilot valve (4) sliding valve top opening is equipped with external screw thread structure's control tube (6), and is a pair of connect nut (7) overlap respectively and locate on pressure regulating pipe (5) and control tube (6), and is a pair of extend a pair of connecting pipe (8) on connecting nut (7) respectively, it is a pair of connecting pipe (8) are fitted with a contraceptive ring and are equipped with a plurality of spouts (9), turning joint (10) connect in a pair of on connecting pipe (8), turning joint (10) are 90 return bends, and turning joint (10) both ends inboard is encircled respectively and is equipped with a plurality of sliders (11) and assembles in a plurality of in spout (9).

2. The gas pipeline safety valve as claimed in claim 1, wherein the corner joint (10) is in threaded connection with an adjusting screw (12), and the bottom end of the adjusting screw (12) is attached to the outer wall of the connecting pipe (8).

3. The gas line safety valve as claimed in claim 1, wherein a pressure relief hole is provided on the pilot valve (4) above the sliding chamber.

4. The safety valve for a gas pipeline according to claim 1, wherein the plurality of sliding blocks (11) are of a triangular structure, and the end parts of the plurality of sliding blocks (11) respectively extend out of the end parts of the corner joints (10).

5. The safety valve of a gas transmission pipeline for gas as claimed in claim 4, wherein a pair of sealing sleeves (13) are respectively arranged at two ends of the corner joint (10) and sleeved on the plurality of sliding blocks (11).

6. The safety valve of a gas transmission line for gas as claimed in claim 1, wherein the ends of the pair of connecting pipes (8) are respectively provided with an internal thread structure, and the pair of connecting pipes (8) are internally threaded with a pair of limiting plates (14) attached to the outer sides of the plurality of sliding grooves (9).