Opening and closing valve for natural gas wellhead pipeline

Abstract

The invention relates to the technical field of natural gas extraction, and discloses an on-off valve for a natural gas wellhead pipeline, which comprises a valve body, a circulating groove is formed in the valve body, connecting mechanisms are arranged outside the left side and the right side of the valve body, a driving mechanism is arranged above the valve body, and each connecting mechanism comprises a first threaded pipe. The number of the first threaded pipes is two, one sides of the two first threaded pipes are fixedly connected to the middles of the left side and the right side of the valve body correspondingly, and a second threaded pipe is arranged outside one side of each first threaded pipe. The first threaded pipe is connected to the left side and the right side of the valve body, the second threaded pipe can be screwed into the first threaded pipe, the first connecting disc can be in threaded connection with the valve body through the second threaded pipe, and the runner pipe and the valve body can be connected together through the first connecting disc and the second connecting disc; therefore, the opening and closing valve can be conveniently disassembled, assembled and maintained by an operator.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas exploitation, in particular to an on-off valve for a natural gas wellhead pipeline. Background Art

[0002] The natural gas wellhead pipeline is an important component connecting the natural gas well and the ground processing facilities. It is responsible for safely and efficiently transmitting the natural gas extracted from underground to the processing station for subsequent processing such as purification and compression. This system is not only crucial to ensuring the smooth extraction of natural gas, but also plays a key role in ensuring production safety and environmental protection.

[0003] In the process of natural gas extraction and transportation, the on-off valve is a key component for controlling the flow of natural gas. The traditional on-off valve for natural gas wellhead pipelines is troublesome to disassemble and assemble during actual use. It is inconvenient to operate when maintenance and repair are required when problems arise, which affects work efficiency. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an on-off valve for a natural gas wellhead pipeline, which has the advantages of being convenient for operators to disassemble, assemble and maintain the on-off valve, and solves the problems mentioned in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an opening and closing valve for a natural gas wellhead pipeline, comprising a valve body, a circulation groove being provided inside the valve body, connecting mechanisms being arranged on the outside of the left and right sides of the valve body, a driving mechanism being arranged on the top of the valve body, the connecting mechanism comprising a first threaded tube, two of which are fixedly connected on one side to the middle of the left and right sides of the valve body respectively, a second threaded tube being arranged on the outside of one side of the first threaded tube, a first connecting plate being fixedly connected on one side of the second threaded tube, a second connecting plate being arranged on the outside of one side of the first connecting plate, a circulation pipe being fixedly connected on the middle of one side of the second connecting plate, and a control valve being arranged on the middle of the upper surface of the circulation pipe.

[0008] Preferably, a slot is provided on the other side of each of the first connection disk and the second connection disk, and a sealing gasket is provided on the outside of one side of the slot.

[0009] Preferably, clamping tubes are fixedly connected to the middle parts of both left and right sides of the sealing gasket.

[0010] The clamping groove is embedded in one side of the first connecting disk and the second connecting disk, the clamping tube can be clamped inside the clamping groove, and the sealing gasket can be clamped between the first connecting disk and the second connecting disk through the clamping tubes on both sides to ensure the sealing after the two are connected.

[0011] Preferably, the driving mechanism comprises a fixed tube, the bottom of which is fixedly connected to the middle of the upper surface of the valve body, and a threaded groove is provided in the middle of the interior of the fixed tube.

[0012] Preferably, a threaded rod is provided inside the threaded groove, and a turning handle is fixedly connected to the top of the threaded rod.

[0013] Preferably, a sealing ball is fixedly connected to the bottom of the threaded rod.

[0014] The bottom of the fixed tube is vertically connected to the middle of the upper surface of the valve body, and the threaded groove runs through the middle of the interior of the fixed tube. The threaded rod can perform threaded rotation movement inside the threaded groove. By turning the handle, the sealing ball is driven up and down by the threaded rod at the bottom to block or open the flow inside the flow groove.

[0015] Compared with the prior art, the present invention provides an on-off valve for a natural gas wellhead pipeline, which has the following beneficial effects:

[0016] 1. The present invention connects the first threaded tube on the left and right sides of the valve body, the second threaded tube can be screwed inside the first threaded tube, the first connecting plate can be threadedly connected to the valve body through the second threaded tube, and the flow pipe and the valve body can be connected together through the first connecting plate and the second connecting plate, so that it is convenient for operators to disassemble and maintain the opening and closing valve.

[0017] 2. The present invention uses a fixed tube connected to the middle part of the upper surface of the valve body, and the threaded rod can perform threaded rotation movement inside the threaded groove. By turning the handle, the sealing ball can be driven to move up and down through the threaded rod to block or open the flow groove, thereby facilitating the control of the opening and closing of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional view of the valve body of the present invention;

[0020] Figure 3 It is a schematic diagram of the front cross-sectional structure of the connecting mechanism of the present invention.

[0021] Wherein: 1. valve body; 101. circulation groove; 2. connecting mechanism; 201. first threaded tube; 202. second threaded tube; 203. first connecting plate; 204. second connecting plate; 205. circulation tube; 206. control valve; 207. clamping groove; 208. sealing gasket; 209. clamping tube; 3. driving mechanism; 301. fixed tube; 302. threaded groove; 303. threaded rod; 304. turning handle; 305. sealing ball. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3 A natural gas wellhead pipeline on-off valve comprises a valve body 1, a flow groove 101 is provided inside the valve body 1, connecting mechanisms 2 are arranged outside the left and right sides of the valve body 1, a driving mechanism 3 is arranged above the valve body 1, the connecting mechanism 2 comprises a first threaded tube 201, the number of the first threaded tube 201 is two, one side of the two first threaded tubes 201 is fixedly connected to the middle of the left and right sides of the valve body 1, a second threaded tube 202 is arranged outside one side of the first threaded tube 201, a first connecting plate 203 is fixedly connected to one side of the second threaded tube 202, a second connecting plate 204 is arranged outside one side of the first connecting plate 203, and the second connecting plate A circulation pipe 205 is fixedly connected to the middle part of one side 204, and a control valve 206 is arranged in the middle part of the upper surface of the circulation pipe 205. The circulation groove 101 runs through the inner middle part of the valve body 1 for gas circulation. The two first threaded pipes 201 are symmetrical with each other. The second threaded pipe 202 can be screwed on the inside of the first threaded pipe 201. The first connecting plate 203 can be threadedly connected between the valve body 1 through the second threaded pipe 202, so that the operator can disassemble and assemble it conveniently. The first connecting plate 203 and the second connecting plate 204 can be connected together to connect the valve body 1 and the circulation pipe 205 together. The control valve 206 is used to control the circulation of the circulation pipe 205.

[0024] Specifically, Figure 3 As shown, a clamping slot 207 is provided on the other side of the first connection disk 203 and the second connection disk 204 , a sealing gasket 208 is provided outside one side of the clamping slot 207 , and a clamping tube 209 is fixedly connected to the middle of the left and right sides of the sealing gasket 208 .

[0025] Through the above technical solution, the card slot 207 is embedded in one side of the first connecting disk 203 and the second connecting disk 204, the card tube 209 can be stuck inside the card slot 207, and the sealing gasket 208 can be stuck between the first connecting disk 203 and the second connecting disk 204 through the card tubes 209 on both sides to ensure the sealing after the two are connected.

[0026] Specifically, Figure 2 As shown, the driving mechanism 3 includes a fixed tube 301, the bottom of which is fixedly connected to the middle of the upper surface of the valve body 1, a threaded groove 302 is provided in the middle of the interior of the fixed tube 301, a threaded rod 303 is provided inside the threaded groove 302, a turning handle 304 is fixedly connected to the top of the threaded rod 303, and a sealing ball 305 is fixedly connected to the bottom of the threaded rod 303.

[0027] Through the above technical solution, the bottom of the fixed tube 301 is vertically connected to the middle of the upper surface of the valve body 1, the threaded groove 302 runs through the middle of the interior of the fixed tube 301, and the threaded rod 303 can perform threaded rotation movement inside the threaded groove 302. By turning the handle 304, the sealing ball 305 is driven to move up and down through the threaded rod 303 at the bottom to block or open the flow inside the flow groove 101.

[0028] When in use, the second threaded tube 202 on one side of the first connecting disk 203 is screwed into the inside of the first threaded tube 201, the clamping tube 209 on one side of the sealing gasket 208 is clamped in the clamping groove 207 on one side of the second connecting disk 204 connected to one side of the circulation tube 205, the clamping groove 207 on one side of the first connecting disk 203 is put outside the clamping tube 209 on the other side of the sealing gasket 208, the circulation tube 205 is connected to the valve body 1, and the turning handle 304 is turned to drive the sealing ball 305 to move up and down through the threaded rod 303 at the bottom to open or close the circulation groove 101 inside the valve body 1.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An on-off valve for a natural gas wellhead pipeline, comprising a valve body (1), characterized in that: The valve body (1) is provided with a circulation groove (101) inside, and connecting mechanisms (2) are arranged on the outside of the left and right sides of the valve body (1). A driving mechanism (3) is arranged above the valve body (1), and the connecting mechanism (2) comprises a first threaded tube (201). There are two first threaded tubes (201), and one side of the two first threaded tubes (201) is fixedly connected to the middle of the left and right sides of the valve body (1) respectively. A second threaded tube (202) is arranged on the outside of one side of the first threaded tube (201), and a first connecting plate (203) is fixedly connected to one side of the second threaded tube (202). A second connecting plate (204) is arranged on the outside of one side of the first connecting plate (203), and a circulation pipe (205) is fixedly connected to the middle of one side of the second connecting plate (204), and a control valve (206) is arranged in the middle of the upper surface of the circulation pipe (205).

2. The on-off valve for a natural gas wellhead pipeline according to claim 1, characterized in that: A card slot (207) is provided on the other side of each of the first connection disk (203) and the second connection disk (204), and a sealing gasket (208) is provided on the outside of one side of the card slot (207).

3. The on-off valve for a natural gas wellhead pipeline according to claim 2, characterized in that: The middle parts of the left and right sides of the sealing gasket (208) are fixedly connected with clamping tubes (209).

4. The on-off valve for a natural gas wellhead pipeline according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed tube (301), the bottom of which is fixedly connected to the middle of the upper surface of the valve body (1), and a threaded groove (302) is provided in the middle of the interior of the fixed tube (301).

5. The on-off valve for a natural gas wellhead pipeline according to claim 4, characterized in that: A threaded rod (303) is disposed inside the threaded groove (302), and a turning handle (304) is fixedly connected to the top of the threaded rod (303).

6. The on-off valve for a natural gas wellhead pipeline according to claim 5, characterized in that: A sealing ball (305) is fixedly connected to the bottom of the threaded rod (303).

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