CN212203480U

CN212203480U - Safety valve for natural gas pipeline

Info

Publication number: CN212203480U
Application number: CN202021032191.7U
Authority: CN
Inventors: 董金礼; 马宁; 李阳; 岑桐
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-12-22
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a safety valve for a natural gas pipeline, which comprises a valve body and a first sleeve, wherein the bottom of the valve body is provided with an outer pipe, the inner wall of the outer pipe is welded with an inner pipe, and both sides of the inner wall of the outer pipe, which are positioned at the inner pipe, are welded with fixing parts; pass through the initial connection at outer tube both ends with the body through the ring flange, during the natural gas is carried, through the pipe box, mounting and first sheathed tube cooperation are sealed the body at the outer intraduct, increase gaseous mobile area through first sleeve pipe and alleviate gas pressure, the junction outside trapezoidal portion and inner tube sets up the expansion ring, if when taking place to leak, the liquid that contains in the natural gas makes the expansion ring inflation, through branch, the spring in the cooperation extrusion tank body of even board and connecting rod, and with the cooperation buffering of expansion ring, the compactness between expansion ring and the inner tube has been improved, it produces not hard up to have avoided being connected between ring flange and the pipeline, the effectual condition of leaking the natural gas that prevents is connected with the valve body to the pipeline.

Description

Safety valve for natural gas pipeline

Technical Field

The utility model relates to a natural gas transmission pipeline technical field specifically is a safety valve for natural gas transmission pipeline.

Background

The natural gas pipeline is a pipeline for conveying natural gas from an exploitation place or a processing plant to an urban gas distribution center or industrial enterprise users, and is also called a gas conveying pipeline, the natural gas pipeline is used for conveying the natural gas, and is a mode for conveying a large amount of natural gas on land.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a natural gas is relief valve for gas transmission pipeline to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a safety valve for a natural gas pipeline comprises a valve body and a first sleeve, wherein an outer pipe is arranged at the bottom of the valve body, an inner pipe is welded on the inner wall of the outer pipe, fixing parts are welded on the two sides of the inner pipe, fixing rods are welded on the two sides of the outer wall of the first sleeve, the two ends of the inner pipe are communicated with the first sleeve, a trapezoidal part is arranged at one end, close to the inner pipe, of the first sleeve, a second sleeve is sleeved at one end, far away from the trapezoidal part, of the first sleeve, two annular grooves are formed in the outer wall of one side of the second sleeve, one end of each fixing rod is connected with the corresponding annular groove in a sliding mode, grooves are formed in the outer walls of the two sides of the second sleeve, supporting rods penetrate through the grooves, a connecting plate is welded at one end, located inside the grooves, of each supporting rod, a, the inside of cell body is through the one end fixed connection of spring with branch, the expansion ring has been cup jointed to the lateral wall of trapezoidal portion, the laminating of lateral wall of expansion ring is connected in the inside wall of outer tube.

As further preferable in the present technical solution: one end of the support rod, which is far away from the tank body, is fixedly connected to one side of the expansion ring, and one end of the support rod, which is close to the expansion ring, is welded on the outer side wall of the inner pipe.

As further preferable in the present technical solution: and flanges are arranged on the outer walls of two sides of the outer pipe.

As further preferable in the present technical solution: pipe sleeves are arranged inside two ends of the outer pipe, and two ends of each pipe sleeve are welded to the outer side walls of the flange plate and the first sleeve respectively.

As further preferable in the present technical solution: the inside of cell body is provided with the rubber pad, one side laminating of rubber pad is connected in the inner wall of recess, the inner wall screwed connection in one side of cell body that the recess was kept away from to the rubber pad.

As further preferable in the present technical solution: the pipe body penetrates through the two ends of the outer pipe, one end, located inside the outer pipe, of the pipe body penetrates through the pipe sleeve, the fixing piece and the first sleeve in sequence, and one end, located inside the first sleeve, of the pipe body is communicated with one end of the inner pipe.

Compared with the prior art, the beneficial effects of the utility model are that: pass through the initial connection at outer tube both ends with the body through the ring flange, insert the pipe box in proper order through the body, mounting and first sheathed tube inside, and make the one end card of body go into trapezoidal portion department, when carrying natural gas, through the pipe box, mounting and first sheathed tube cooperation are sealed the body at the outer intraduct, increase the area of gas flow through first sleeve pipe and alleviate gas pressure, the junction to trapezoidal portion and inner tube outside sets up the expansion ring, if when taking place to leak, the liquid that contains in the natural gas makes the expansion ring inflation, through branch, the spring in the cooperation extrusion tank of even board and connecting rod, and with the cooperation buffering of expansion ring, the compactness between expansion ring and the inner tube has been improved, it produces not hard up to have avoided being connected between ring flange and the pipeline, the effectual condition that prevents pipeline and valve body connection leakage natural gas.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the groove of the present invention;

fig. 3 is an enlarged schematic structural diagram of the area a in fig. 1 according to the present invention.

In the figure: 1. a valve body; 2. a pipe body; 4. pipe sleeve; 5. a first sleeve; 6. a trapezoidal portion; 7. an inner tube; 8. a flange plate; 10. a strut; 11. connecting plates; 12. a connecting rod; 13. a groove; 14. a spring; 15. a trough body; 16. a rubber pad; 17. a second sleeve; 18. an annular groove; 19. fixing the rod; 20. a fixing member; 21. an expansion ring; 22. an outer tube.

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.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a safety valve for a natural gas transmission pipeline comprises a valve body 1 and a first sleeve 5, wherein an outer pipe 22 is arranged at the bottom of the valve body 1, an inner pipe 7 is welded on the inner wall of the outer pipe 22, fixing parts 20 are welded on two sides of the inner pipe 7, fixing rods 19 are welded on two sides of the outer wall of the first sleeve 5, two ends of the inner pipe 7 are communicated with the first sleeve 5, a trapezoidal part 6 is arranged at one end, close to the inner pipe 7, of the first sleeve 5, a second sleeve 17 is sleeved at one end, far away from the trapezoidal part 6, of the first sleeve 5, two annular grooves 18 are formed in the outer wall of one side of the second sleeve 17, one end of each fixing rod 19 is connected with the annular groove 18 in a sliding mode, grooves 13 are formed in the outer walls of two sides of the second sleeve 17, supporting rods 10 penetrate through the grooves 13, and connecting plates 11 are welded at one ends, located inside the grooves 13, connecting rod 12 has been welded to one side of even board 11, the inside of recess 13 is provided with cell body 15, the one end fixed connection of spring 14 and branch 10 is passed through to the inside of cell body 15, expansion ring 21 has been cup jointed to the lateral wall of trapezoidal portion 6, expansion ring 21's lateral wall laminating is connected in the inside wall of outer tube 22.

In this embodiment, specifically: one end fixed connection that cell body 15 was kept away from to branch 10 is in one side of expansion ring 21, branch 10 is close to the one end of expansion ring 21 and welds in the lateral wall of inner tube 7, and through above setting, when the liquid that contains in the natural gas spills, through expansion ring 21 inflation extrusion branch 10, make branch 10 under the effect of cell body 15 and form the extrusion between expansion ring 21, improved the leakproofness of first sleeve 5 and inner tube 7 junction.

In this embodiment, specifically: the both sides outer wall of outer tube 22 is provided with ring flange 8, and through above setting, ring flange 8 is tentatively fixed the inlet end at outer tube 22 and the end of giving vent to anger to body 2.

In this embodiment, specifically: the inside pipe box 4 that is provided with in both ends of outer tube 22, the both ends of pipe box 4 weld respectively in the lateral wall of ring flange 8 and first sleeve 5, and through above setting, the pipe box 4 is fixed body 2 and is connected with first sleeve 5, has improved the stability that natural gas flows in the body 2.

In this embodiment, specifically: the inside of cell body 15 is provided with rubber pad 16, one side laminating of rubber pad 16 is connected in the inner wall of recess 13, the inner wall screwed connection of recess 13 is kept away from to rubber pad 16 in one side of cell body 15, through above setting, increases cell body 15 and to second sleeve pipe 17's frictional force when receiving the extrusion.

In this embodiment, specifically: the body 2 has all been run through to the both ends of outer tube 22, and the body 2 is located the inside one end of outer tube 22 and runs through in pipe box 4, mounting 20 and first sleeve 5 in proper order, and the body 2 is located the inside one end of first sleeve 5 and is linked together with the one end of inner tube 7.

Working principle or structural principle, when in use, the pipe body 2 is preliminarily connected through the flange plates 8 at two ends of the outer pipe 22, the pipe body 2 is sequentially inserted into the pipe sleeve 4, the fixing part 20 and the first sleeve 5, one end of the pipe body 2 is clamped into the trapezoidal part 6 of the first sleeve 5, the pipe body 2 is communicated with the inner pipe 7 through the first sleeve 5, the valve plate of the valve body 1 is positioned in the inner pipe 7, when natural gas is conveyed, the pipe body 2 is sealed through the pipe sleeve 4, the fixing part 20 and the first sleeve 5, the gas pressure is relieved by increasing the gas flowing area through the first sleeve 5, the expansion ring 21 is arranged at the connection part between the trapezoidal part 6 and the outer part of the inner pipe 7, if leakage occurs, the expansion ring 21 is expanded through liquid contained in the natural gas, the expansion ring extrudes the supporting rod 10, the connecting plate 11 and the connecting rod 12 to extrude the spring 14 in the groove body 15, and has a buffering effect by, and improves the tightness between the expansion ring 21 and the inner pipe 7, and avoids the natural gas leakage in the pipeline.

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. The utility model provides a safety valve for natural gas transmission pipeline, includes valve body (1) and first sleeve pipe (5), its characterized in that: the bottom of the valve body (1) is provided with an outer pipe (22), the inner wall of the outer pipe (22) is welded with an inner pipe (7), fixing parts (20) are welded on two sides of the inner wall of the outer pipe (22) which are located on the inner pipe (7), fixing rods (19) are welded on two sides of the outer wall of the first sleeve (5), two ends of the inner pipe (7) are communicated with the first sleeve (5), one end, close to the inner pipe (7), of the first sleeve (5) is provided with a trapezoidal portion (6), one end, far away from the trapezoidal portion (6), of the first sleeve (5) is sleeved with a second sleeve (17), two annular grooves (18) are formed in the outer wall of one side of the second sleeve (17), one end of each fixing rod (19) is slidably connected with the annular groove (18), grooves (13) are formed in the outer walls of two sides of the second sleeve (17), and a support rod (10) penetrates, branch (10) are located the inside one end welding of recess (13) and have even board (11), even one side welding of board (11) has connecting rod (12), the inside of recess (13) is provided with cell body (15), the one end fixed connection of spring (14) and branch (10) is passed through to the inside of cell body (15), expansion ring (21) have been cup jointed to the lateral wall of trapezoidal portion (6), the lateral wall laminating of expansion ring (21) is connected in the inside wall of outer tube (22).

2. The safety valve for the natural gas pipeline as claimed in claim 1, wherein: one end of the support rod (10) far away from the groove body (15) is fixedly connected to one side of the expansion ring (21), and one end of the support rod (10) close to the expansion ring (21) is welded on the outer side wall of the inner pipe (7).

3. The safety valve for the natural gas pipeline as claimed in claim 1, wherein: and flanges (8) are arranged on the outer walls of two sides of the outer pipe (22).

4. The safety valve for the natural gas pipeline as claimed in claim 1, wherein: pipe sleeves (4) are arranged inside two ends of the outer pipe (22), and two ends of each pipe sleeve (4) are welded to the outer side walls of the flange plate (8) and the first sleeve (5) respectively.

5. The safety valve for the natural gas pipeline as claimed in claim 1, wherein: the inside of cell body (15) is provided with rubber pad (16), the laminating of one side of rubber pad (16) is connected in the inner wall of recess (13), the inner wall screwed connection in one side of cell body (15) of recess (13) is kept away from in rubber pad (16).

6. The safety valve for the natural gas pipeline as claimed in claim 1, wherein: the two ends of the outer pipe (22) are all penetrated with the pipe body (2), one end of the pipe body (2) located inside the outer pipe (22) sequentially penetrates through the pipe sleeve (4), the fixing piece (20) and the first sleeve (5), and one end of the pipe body (2) located inside the first sleeve (5) is communicated with one end of the inner pipe (7).