Joint for preventing impact of wellhead of gas storage well

Abstract

The utility model relates to the technical field of joint structures, and discloses an anti-impact joint for a wellhead of a gas storage well, which comprises a shell, a barrel is arranged in the shell, a blow-off pipe is arranged in the barrel, and an anti-impact structure is arranged outside the shell. According to the anti-impact connector for the wellhead of the gas storage well, the anti-impact structure is arranged, the three-way valve is arranged to close the connecting pipe, and when gas enters the gas inlet and outlet pipeline, the compressor acts to promote gas to enter the cylinder body to make contact with the circular ring frame and enter the cylinder body through the notch; the pressure gauge I detects the pressure intensity during ventilation, the safety valve I is started when the pressure intensity is too high, the pressure gauge II detects the pressure intensity during pollution discharge, and the safety valve II is started when the pressure intensity is too high, so that the impact on the pollution discharge pipe is reduced, and the damage to the pollution discharge pipe, the air inlet pipeline and the air outlet pipeline caused by too high air pressure is prevented; the service life of the joint is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of joint structures, in particular to a joint used for preventing impact at a wellhead of a gas storage well. Background Art

[0002] Compared with other gas storage devices, underground gas storage wells for storing high-pressure compressed natural gas have many advantages such as high safety and low risk. They are widely used in CNG (compressed natural gas) automobile filling stations, urban natural gas peak-shaving stations and other places. In particular, in recent years, gas storage wells have developed rapidly across the country. In addition, oil prices are high. Natural gas, as an alternative energy source to oil, is both environmentally friendly and economical, making it very widely used. As a result, underground gas storage wells have basically replaced gas cylinders and gas tanks in gas stations and peak-shaving stations, and gas storage well interfaces are widely used.

[0003] After searching, the utility model patent with patent number CN217057142U discloses an inlet and outlet gas joint body for hydrogen gas storage wells, and specifically discloses an inlet and outlet gas joint mechanism, the inlet and outlet gas joint body mechanism includes a sealing cone and an inlet and outlet gas joint body, the inlet and outlet gas joint body is fixedly arranged on the sealing cone, a connecting hole is provided at the top of the outer wall of the inlet and outlet gas joint body, an internal hole is provided at the bottom of the outer wall of the sealing cone, the internal hole and the connecting hole are interconnected, a gas phase hole is provided on the outer wall of the inlet and outlet gas joint body, and the gas phase hole is connected at the connection point between the internal hole and the connecting hole. By combining the graphics and texts of the utility model patent, it can be seen that in the utility model patent, the gas entering the gas storage well from the inlet and exhaust pipeline directly impacts the upper joint of the sewage pipe, and the gas impact in the inlet and exhaust pipeline will damage the sewage pipe and reduce the service life of the joint, so a joint for anti-impact of the wellhead of the gas storage well is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a joint for preventing a sewage pipe from being impacted and used for preventing the wellhead of a gas storage well from being impacted.

[0006] (II) Technical solution

[0007] According to the technical solution provided in the embodiment of the present application: a joint for preventing impact at the wellhead of a gas storage well, comprising a shell, a cylinder is arranged inside the shell, a sewage pipe is arranged inside the cylinder, and an impact-resistant structure is arranged outside the shell;

[0008] The impact-resistant structure includes an inlet and exhaust pipe, a three-way valve, a pressure gauge 1, a safety valve 1, a connecting pipe, a ball valve, a pressure test pump, a circular frame, a notch, a pressure gauge 2, and a safety valve 2. The right side of the shell is fixedly connected with the inlet and exhaust pipe, the outside of the inlet and exhaust pipe is provided with a three-way valve, the outside of the inlet and exhaust pipe is provided with a pressure gauge 1, the outside of the inlet and exhaust pipe is provided with a safety valve 1, the bottom of the three-way valve is fixedly connected with a connecting pipe, the outside of the connecting pipe is provided with a ball valve, the right side of the connecting pipe is provided with a pressure test pump, the left side of the inlet and exhaust pipe is fixedly connected with a circular frame, the bottom of the circular frame is provided with a notch, the outside of the sewage pipe is provided with a pressure gauge 2, and the outside of the sewage pipe is provided with a safety valve 2.

[0009] Furthermore, ventilation holes adapted to the air inlet and exhaust pipes are provided on the right sides of the shell and the cylinder, so that the cylinder is connected to the air inlet and exhaust pipes.

[0010] Furthermore, the left side of the air intake and exhaust pipe passes through the vent hole and extends to the interior of the cylinder, so that the cylinder is connected to the air intake and exhaust pipe.

[0011] Furthermore, the outer diameter of the circular ring frame is matched with the cylinder, and the inner diameter of the circular ring frame is matched with the sewage pipe, so as to prevent the inflowing and outflowing gases from impacting the sewage pipe.

[0012] Furthermore, a drain hole compatible with a drain pipe is opened on the top of the shell, and the top end of the drain pipe passes through the drain hole and extends to the outside of the shell. The second pressure gauge and the second safety valve are both arranged on the drain pipe outside the shell to prevent excessive pressure during drainage.

[0013] Furthermore, a connection hole adapted to the connection pipe is provided at the bottom of the three-way valve to facilitate pressure testing.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a joint for preventing impact at the wellhead of a gas storage well, which has the following beneficial effects:

[0016] The joint for preventing impact at the wellhead of a gas storage well is provided with an impact-resistant structure, and the three-way valve is set to close the connecting pipe. When air is taken into the air inlet and outlet pipes, the compressor works to cause the gas to enter the cylinder and contact the circular ring frame, and then enter the cylinder through the notch. When testing the pressure, the three-way valve is set to open the connecting pipe, the air inlet and outlet pipes on the right side of the three-way valve are closed, the ball valve is opened and a pressure test pump is used for testing. After the test is completed, the ball valve is closed and the pressure test pump is removed. A pressure gauge 1 detects the pressure during ventilation, and a safety valve 1 is activated when the pressure is too high. A pressure gauge 2 detects the pressure during sewage discharge, and a safety valve 2 is activated when the pressure is too high, thereby reducing the impact on the sewage pipe, preventing the sewage pipe and the air inlet and outlet pipes from being damaged due to excessive air pressure, and extending the service life of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0018] Figure 2 This is a front cross-sectional view of the structure of the utility model;

[0019] Figure 3 It is a top view of the circular ring frame structure of the utility model.

[0020] In the figure: 1. Shell; 2. Cylinder; 3. Drain pipe; 4. Impact-resistant structure; 401. Inlet and outlet pipes; 402. Three-way valve; 403. Pressure gauge 1; 404. Safety valve 1; 405. Connecting pipe; 406. Ball valve; 407. Pressure test pump; 408. Ring frame; 409. Notch; 4010. Pressure gauge 2; 4011. Safety valve 2. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0023] A joint for preventing impact at the wellhead of a gas storage well, such as Figure 1 As shown, the shell 1 is arranged inside the wellhead, and the shell 1 can fix the position of the sewage pipe 3 to prevent the sewage pipe 3 from contacting the cylinder 2 and affecting the ventilation power.

[0024] like Figure 2 As shown, the pressure test pump 407 is installed on the ground, and a part of the housing 1 and the wellhead are both above the ground.

[0025] like Figure 3 As shown, when the gas enters the cylinder 2 through the air inlet and outlet pipes 401, the impact force of the gas is dumped into the circular frame 408 to prevent the sewage pipe 3 from being impacted.

[0026] When implementing, follow these steps:

[0027] 1) First, when delivering gas into the cylinder 2, the three-way valve 402 is set to close the connecting pipe 405. When the air is introduced into the air inlet and outlet pipes 401, the compressor works to cause the gas to enter the cylinder 2 and contact the annular frame 408, and then enter the cylinder 2 through the notch 409;

[0028] 2) When testing the pressure in the cylinder 2, the three-way valve 402 is set to open the connecting pipe 405, the air inlet and outlet pipes 401 on the right side of the three-way valve 402 are closed, the ball valve 406 is opened and the pressure test pump 407 is used for testing. After the test is completed, the ball valve 406 is closed and the pressure test pump 407 is removed;

[0029] 3) When finally detecting the pressure in the inlet and exhaust pipes 401, the pressure gauge 1 403 detects the pressure during ventilation. If it is too high, the safety valve 1 404 is activated. When detecting the pressure in the sewage pipe 3, the pressure gauge 2 4010 detects the pressure during sewage discharge. If it is too high, the safety valve 2 4011 is activated.

[0030] In summary, the joint for preventing impact at the wellhead of a gas storage well is provided with an impact-resistant structure 4, and the three-way valve 402 is set to close the connecting pipe 405. When the inlet and outlet pipe 401 is inlet, the compressor works to cause the gas to enter the cylinder 2 and contact the annular frame 408, and enter the cylinder 2 through the notch 409. When testing the pressure, the three-way valve 402 is set to open the connecting pipe 405, the inlet and outlet pipe 401 on the right side of the three-way valve 402 is closed, the ball valve 406 is opened, and the pressure test pump 407 is used for testing, and the test is completed. Then, the ball valve 406 is closed and the pressure test pump 407 is removed. The pressure gauge 403 detects the pressure during ventilation. When it is too high, the safety valve 404 is activated. The pressure gauge 4010 detects the pressure during sewage discharge. When it is too high, the safety valve 4011 is activated. This solves the problem that the gas entering the gas storage well from the inlet and exhaust pipe ports in the utility model patent with patent number CN217057142U directly impacts the upper joint of the sewage pipe, and the gas impact in the inlet and exhaust pipes will damage the sewage pipe and reduce the service life of the joint.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the 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. A joint for preventing impact at the wellhead of a gas storage well, comprising a housing (1), characterized in that: A cylinder (2) is arranged inside the shell (1), a sewage discharge pipe (3) is arranged inside the cylinder (2), and an impact-resistant structure (4) is arranged outside the shell (1); The impact-resistant structure (4) comprises an inlet and exhaust pipe (401), a three-way valve (402), a pressure gauge (403), a safety valve (404), a connecting pipe (405), a ball valve (406), a pressure test pump (407), a circular ring frame (408), a notch (409), a pressure gauge (4010), and a safety valve (4011). The right side of the shell (1) is fixedly connected with the inlet and exhaust pipe (401), the outside of the inlet and exhaust pipe (401) is provided with a three-way valve (402), the outside of the inlet and exhaust pipe (401) is provided with a pressure gauge (403), and the inlet and exhaust pipe (401) is fixedly connected with the three-way valve (402). A safety valve 1 (404) is arranged outside the air pipeline (401), a connecting pipe (405) is fixedly connected to the bottom of the three-way valve (402), a ball valve (406) is arranged outside the connecting pipe (405), a pressure test pump (407) is arranged on the right side of the connecting pipe (405), a circular frame (408) is fixedly connected to the left side of the air inlet and outlet pipeline (401), a notch (409) is opened at the bottom of the circular frame (408), a pressure gauge 2 (4010) is arranged outside the sewage pipe (3), and a safety valve 2 (4011) is arranged outside the sewage pipe (3).

2. A joint for preventing impact at the wellhead of a gas storage well according to claim 1, characterized in that: The shell (1) and the right side of the cylinder (2) are both provided with ventilation holes adapted to the air inlet and outlet pipes (401).

3. A joint for preventing impact at the wellhead of a gas storage well according to claim 2, characterized in that: The left side of the air inlet and outlet pipe (401) passes through the vent hole and extends to the interior of the cylinder (2).

4. The joint for preventing impact at the wellhead of a gas storage well according to claim 1, characterized in that: The outer diameter of the circular frame (408) is matched with the cylinder (2), and the inner diameter of the circular frame (408) is matched with the sewage discharge pipe (3).

5. The joint for preventing impact at the wellhead of a gas storage well according to claim 1, characterized in that: The top of the shell (1) is provided with a drainage hole that is compatible with the drainage pipe (3); the top end of the drainage pipe (3) passes through the drainage hole and extends to the outside of the shell (1); the second pressure gauge (4010) and the second safety valve (4011) are both arranged on the drainage pipe (3) outside the shell (1).

6. The joint for preventing impact at the wellhead of a gas storage well according to claim 1, characterized in that: The bottom of the three-way valve (402) is provided with a connection hole adapted to the connection pipe (405).

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