Natural gas pipeline with natural gas sampling device

Abstract

The utility model discloses a natural gas pipeline with a natural gas sampling device, which comprises a pipeline body, a sampling pipe is mounted on the pipeline body, a control valve is arranged on the sampling pipe, a filter plate is coaxially and rotatably arranged in the sampling pipe and behind the control valve, and the filter plate is driven by a driving component. A cleaning assembly is arranged at one end, close to the control valve, of the filter plate in a horizontal reciprocating motion manner, and the cleaning assembly is used for cleaning dust filtered on the filter plate; an absorption pipe is mounted at one end, far away from the pipeline body, of the sampling pipe, a sampling tank is arranged at the tail part of the absorption pipe, and the sampling tank is connected with the absorption pipe through a quick connection assembly, so that the sampling tank can be quickly disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the field of natural gas transmission pipeline technology, and specifically to a natural gas pipeline with a natural gas sampling device. Background Technology

[0002] Accurate sampling and analysis of natural gas are crucial in all stages of its extraction, transportation, and application. They provide critical data support for quality control, component analysis, process optimization, and safety assurance.

[0003] For example, Chinese patent CN219755592U discloses a natural gas pipeline with a natural gas sampling device. The device includes a sampling box and a fixed pipe located at the bottom of the sampling box and communicating with the inside of the natural gas pipeline. A vent hole is opened on the fixed pipe. A hydraulic cylinder drives a push rod and a sealing plate to move up and down, allowing the sampling box to communicate with or be isolated from the inside of the natural gas pipeline through the vent hole, thus enabling natural gas sampling. While this device improves the safety and applicability of natural gas sampling and reduces sampling difficulty, it cannot filter the natural gas during the sampling process, easily leading to impurities mixing into the sampled natural gas, causing deviations in test results, and affecting the operator's judgment of the natural gas quality.

[0004] Therefore, it is necessary to provide a natural gas pipeline with a natural gas sampling device to solve the problems mentioned in the background art above. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas pipeline with a natural gas sampling device, comprising: a pipeline body, a sampling tube installed on the pipeline body, a control valve installed on the sampling tube, a filter plate coaxially rotatably disposed inside the sampling tube behind the control valve, the filter plate being driven by a drive assembly; a cleaning assembly is disposed on one end of the filter plate near the control valve, which is horizontally reciprocating, the cleaning assembly being used to clean the dust filtered on the filter plate;

[0006] An absorption tube is installed at the end of the sampling tube away from the pipe body, and a sampling container is provided at the tail end of the absorption tube. The sampling container is connected to the absorption tube by a quick-connect assembly, which facilitates quick assembly and disassembly of the sampling container.

[0007] Preferably, the cleaning component includes: a servo motor installed on the outside of the sampling tube, a turntable installed at the output end of the servo motor, the axis of the turntable being parallel to the axis of the sampling tube, and a protruding post being vertically eccentrically arranged on the side of the turntable away from the servo motor;

[0008] A limiting hole is radially penetrated through the pipe wall of the pipe body. A connecting rod is slidably installed at one end of the limiting hole along the radial direction of the pipe body. A cleaning brush is installed at one end of the connecting rod inside the pipe body. The cleaning brush elastically abuts against the surface of the filter plate. A limiting frame is T-shaped at the other end of the connecting rod. The limiting frame has a rectangular frame structure, and the inner wall of the limiting frame slides with the protruding post.

[0009] Preferably, a protective cover is provided on the outside of the cleaning component, and the protective cover is installed on the pipe body.

[0010] Preferably, the quick-connect assembly includes a male connector disposed on the body of the sampling tube and a female connector disposed on the body of the absorption tube.

[0011] The male connector includes a fixing plate and a pin. The fixing plate is symmetrically arranged at 180° on the end of the sampling tube near the absorption tube. The pin is vertically fixed on the side of the fixing plate facing the absorption tube.

[0012] The female connector includes a second fixing plate. The first fixing plate is symmetrically arranged at 180° on the end of the sampling tube near the absorption tube. The second fixing plate has a U-shaped mounting cavity. The opening of the U-shaped mounting cavity is arranged radially towards the absorption tube. A boss is formed inside the second fixing plate on the opening side of the U-shaped mounting cavity. A slot is provided on the second fixing plate corresponding to the pin. The slot is located in the middle of the boss. A locking unit is installed in the U-shaped mounting cavity for locking the pin after it is inserted into the slot.

[0013] Preferably, the locking unit includes:

[0014] A pressure rod is slidably inserted at the bottom of the U-shaped mounting cavity. A hinge seat is provided on the rod body inside the U-shaped mounting cavity. One end of a support rod is symmetrically hinged to both sides of the hinge seat.

[0015] The U-shaped mounting cavity is located on both sides of the boss and communicates with the slot, with a second limiting hole. A sliding cylinder is slidably inserted in the second limiting hole. A limiting rod is slidably provided at the end of the sliding cylinder away from the slot. The limiting rod is fixed on the inner wall of the U-shaped mounting cavity. The end of the sliding cylinder away from the slot is hinged to the support rod.

[0016] The pressure rod has a deep hole coaxially opened at one end inside the U-shaped mounting cavity. A fixing rod is fixedly installed on the boss. The fixing rod is slidably inserted into the deep hole. A spring is sleeved on the outside of the fixing rod. The spring elastically supports the end face of the boss and the pressure rod.

[0017] In the initial state, under the elastic force of the spring, the two support rods form a figure-eight shape.

[0018] Preferably, the drive assembly includes: a mounting bracket installed at the rear end of the filter plate, a drive motor fixedly mounted on the mounting bracket, and the output end of the drive motor being coaxially fixedly connected to the filter plate.

[0019] Preferably, a sealing ring is coaxially bonded to one end of the sampling tube near the absorption tube, and a sealing groove is opened between the absorption tube and the sealing ring, with the sealing ring elastically engaged in the sealing groove.

[0020] Preferably, a limiting groove is formed on the pin corresponding to the outer diameter of the slide cylinder.

[0021] Compared with the prior art, the present invention provides a natural gas pipeline with a natural gas sampling device, which has the following advantages:

[0022] 1. By setting up a rotatable filter plate and a cleaning component, on the one hand, local clogging of the filter plate can be avoided, thus extending its service life; on the other hand, the cleaning component can clean the filter plate in real time or periodically, ensuring that the filter plate is always in a high-efficiency filtration state, improving the accuracy of natural gas sampling, and making the natural gas test results closer to the true quality of natural gas.

[0023] 2. By setting up quick-connect components, the sampling container and sampling tube can be quickly connected and separated simply by pressing the lever. The operation is simple and convenient, without the need for complicated tools, which greatly improves the efficiency of sampling work. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure of a natural gas pipeline with a natural gas sampling device;

[0025] Figure 2 A schematic diagram of the installation structure of a filter plate for a natural gas pipeline with a natural gas sampling device;

[0026] Figure 3 A schematic diagram of a natural gas pipeline cleaning assembly with a natural gas sampling device;

[0027] Figure 4 A schematic diagram of a male connector for a natural gas pipeline with a natural gas sampling device;

[0028] Figure 5 A schematic diagram of a female connector for a natural gas pipeline with a natural gas sampling device;

[0029] Figure 6 A cross-sectional schematic diagram of a quick-connect assembly for a natural gas pipeline with a natural gas sampling device;

[0030] In the diagram: 1. Pipe body; 2. Sampling tube; 3. Control valve; 4. Filter plate; 5. Mounting bracket; 6. Drive motor; 7. Servo motor; 8. Turntable; 9. Protruding column; 10. Limiting bracket; 11. Connecting rod; 12. Cleaning brush; 13. Protective cover; 14. Absorption tube; 15. Sampling container; 16. Fixing plate one; 17. Slot; 18. Fixing plate two; 19. Pin; 20. Pressure rod; 21. Hinge seat; 22. Support rod; 23. Slide cylinder; 24. Limiting rod; 25. Fixing rod; 26. Spring; 27. Sealing ring; 28. Sealing groove. Detailed Implementation

[0031] Please see Figure 1-6 This utility model provides a natural gas pipeline with a natural gas sampling device, comprising: a pipeline body 1, a sampling pipe 2 installed on the pipeline body 1, a control valve 3 provided on the sampling pipe 2, a filter plate 4 coaxially rotatably arranged inside the sampling pipe 2 behind the control valve 3, the filter plate 4 being driven by a drive assembly; a cleaning assembly is provided at one end of the filter plate 4 near the control valve 3 that can move horizontally back and forth, the cleaning assembly being used to clean the dust filtered on the filter plate 4;

[0032] An absorption tube 14 is installed at the end of the sampling tube 2 away from the pipe body 1. A sampling container 15 is provided at the tail of the absorption tube 14. The sampling container 15 is connected to the absorption tube 14 by a quick-connect assembly, which facilitates quick assembly and disassembly of the sampling container 15.

[0033] It should be explained that the pipeline body 1 is used to transport natural gas, the sampling pipe 2 is used to connect with the natural gas pipeline body 1 to provide a sampling channel for the sampling tank 15, and the control valve 3 is used to control the opening and closing of the sampling pipe 2.

[0034] When natural gas is sampled, control valve 3 is opened, and the natural gas in pipeline body 1 passes through filter plate 4 to filter out solid impurities. Then, it flows into sampling tank 15 to collect the natural gas sample. During this process, under the rotation drive of the drive component, filter plate 4 filters the natural gas while rotating, avoiding local blockage of filter plate 4 and extending the service life of filter plate 4. At the same time, the horizontal reciprocating movement of the cleaning component cooperates with the rotating filter plate 4 to clean different parts of filter plate 4, ensuring that filter plate 4 filters natural gas efficiently and improving the accuracy of natural gas sampling.

[0035] Furthermore, the cleaning component includes: a servo motor 7 installed on the outside of the sampling tube 2, a turntable 8 installed at the output end of the servo motor 7, the axis of the turntable 8 being parallel to the axis of the sampling tube 2, and a protruding post 9 being vertically eccentrically arranged on the side of the turntable 8 away from the servo motor 7.

[0036] A limiting hole is radially opened through the pipe wall of the pipe body 1. A connecting rod 11 is slidably arranged along the radial direction of the pipe body 1 at one of the limiting holes. A cleaning brush 12 is installed at one end of the connecting rod 11 inside the pipe body 1. The cleaning brush 12 elastically abuts against the surface of the filter plate 4. A limiting frame 10 is arranged in a T-shape at the other end of the connecting rod 11. The limiting frame 10 has a rectangular frame structure, and the inner wall of the limiting frame 10 slides with the protruding post 9.

[0037] Furthermore, a protective cover 13 is provided on the outside of the cleaning component, and the protective cover 13 is installed on the pipe body 1.

[0038] The servo motor 7 rotates to drive the eccentric protrusion 9 to rotate, which cooperates with the limiting hole 1, thereby driving the limiting frame 10 to move back and forth. This allows the cleaning brush 12 to thoroughly clean different positions on the filter plate 4, ensuring that the filter plate 4 is always in a state of high-efficiency filtration and improving the accuracy of natural gas sampling.

[0039] Furthermore, the quick-connect assembly includes a male connector disposed on the body of the sampling tube 2 and a female connector disposed on the body of the absorption tube 14.

[0040] The male connector includes a fixing plate 16 and a pin 19. The fixing plate 16 is symmetrically arranged at 180° on the end of the sampling tube 2 near the absorption tube 14. The pin 19 is vertically fixed on the side of the fixing plate 16 facing the absorption tube 14.

[0041] The female connector includes a second fixing plate 18. The first fixing plate 16 is symmetrically arranged at 180° on the end of the sampling tube 2 near the absorption tube 14. The second fixing plate 18 has a U-shaped mounting cavity. The opening of the U-shaped mounting cavity is arranged radially towards the absorption tube 14. A boss is formed inside the second fixing plate 18 on the opening side of the U-shaped mounting cavity. A slot 17 is provided on the second fixing plate 18 corresponding to the pin 19. The slot 17 is located in the middle of the boss. A locking unit is installed in the U-shaped mounting cavity for locking the pin 19 after it is inserted into the slot 17.

[0042] Furthermore, the locking unit includes:

[0043] A pressure rod 20 is slidably inserted at the bottom of the U-shaped mounting cavity. A hinge seat 21 is provided on the rod body of the pressure rod 20 inside the U-shaped mounting cavity. One end of a support rod 22 is symmetrically hinged to both sides of the hinge seat 21.

[0044] The U-shaped mounting cavity is located on both sides of the boss and communicates with the slot 17 with a second limiting hole. A sliding cylinder 23 is slidably inserted in the second limiting hole. A limiting rod 24 is slidably provided at the end of the sliding cylinder 23 away from the slot 17. The limiting rod 24 is fixed on the inner wall of the U-shaped mounting cavity. The end of the sliding cylinder 23 away from the slot 17 is hinged to the support rod 22.

[0045] The pressure rod 20 has a deep hole coaxially opened at one end inside the U-shaped mounting cavity. A fixing rod 25 is fixedly installed on the boss. The fixing rod 25 is slidably inserted into the deep hole. A spring 26 is sleeved on the outside of the fixing rod 25. The spring 26 elastically supports the end face of the boss and the pressure rod 20.

[0046] In the initial state, under the elastic force of the spring 26, the two support rods 22 are in a figure-eight shape.

[0047] It should be explained that when the sampling tube 2 and the absorption tube 14 are quickly connected using the quick-connect assembly, pressing the two pressure rods 20 on both sides compresses the spring 26, increases the angle between the two support rods 22, and causes the sliding cylinders 23 to move in opposite directions. Then, the sampling canister 15 is held and the slot 17 and the pin 19 are inserted together. Finally, the pressure rod 20 is released, and under the elastic force of the spring 26, the sliding cylinders 23 move towards each other to lock and limit the pin 19, thus completing the quick connection between the sampling tube 2 and the absorption tube 14.

[0048] When sampling is complete and the sampling container 15 needs to be removed, press the lever 20 to move the slide cylinder 23 to release the locking limit of the pin 19, and then remove the sampling container 15.

[0049] Furthermore, the drive assembly includes: a mounting bracket 5 installed at the rear end of the filter plate 4, a drive motor 6 fixedly mounted on the mounting bracket 5, and the output end of the drive motor 6 being coaxially fixedly connected to the filter plate 4.

[0050] Furthermore, a sealing ring 27 is coaxially bonded to one end of the sampling tube 2 near the absorption tube 14, and a sealing groove 28 is opened on the absorption tube 14 corresponding to the sealing ring 27. The sealing ring 27 is elastically locked in the sealing groove 28 to ensure the sealing performance when the sampling tube 2 and the absorption tube 14 are quickly connected.

[0051] Furthermore, a limiting groove is formed on the pin 19 corresponding to the outer diameter of the slide cylinder 23.

[0052] Specifically, when the slide cylinder 23 locks and limits the pin 19, it is locked in the limiting groove to prevent the pin 19 from sliding out.

[0053] In practice, pressing the lever quickly connects the sampling tank to the sampling pipe. Then, opening the control valve allows the natural gas in the pipeline to flow into the sampling tank after being filtered by the filter plate, thus completing the natural gas sampling. Furthermore, the filter plate can be cleaned in real-time or periodically using a cleaning assembly to ensure long-term, efficient filtration of the natural gas, improving sampling accuracy and making the test results closer to the true quality of the natural gas.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A natural gas pipeline with a natural gas sampling device, comprising a pipeline body (1), a sampling pipe (2) installed on the pipeline body (1), and a control valve (3) provided on the sampling pipe (2), characterized in that, A filter plate (4) is coaxially rotatably arranged inside the sampling tube (2) behind the control valve (3). The filter plate (4) is driven by a drive assembly. A cleaning assembly is arranged at one end of the filter plate (4) that is close to the control valve (3) and can move horizontally back and forth. The cleaning assembly is used to clean the dust filtered on the filter plate (4). An absorption tube (14) is installed at one end of the sampling tube (2) away from the pipe body (1). A sampling can (15) is provided at the tail end of the absorption tube (14). The sampling can (15) and the absorption tube (14) are connected by a quick-connect assembly, which facilitates quick assembly and disassembly of the sampling can (15).

2. A natural gas pipeline with a natural gas sampling device according to claim 1, characterized in that, The cleaning assembly includes: a servo motor (7) installed on the outside of the sampling tube (2), a turntable (8) installed at the output end of the servo motor (7), the axis of the turntable (8) being parallel to the axis of the sampling tube (2), and a protruding post (9) being vertically eccentrically arranged on the side of the turntable (8) away from the servo motor (7). A limiting hole is radially opened on the pipe wall of the pipe body (1). A connecting rod (11) is slidably arranged at one end of the limiting hole along the radial direction of the pipe body (1). A cleaning brush (12) is installed at one end of the connecting rod (11) inside the pipe body (1). The cleaning brush (12) elastically abuts against the surface of the filter plate (4). A limiting frame (10) is arranged at the other end of the connecting rod (11) in a T-shape. The limiting frame (10) is a rectangular frame structure, and the inner wall of the limiting frame (10) slides with the protrusion (9).

3. A natural gas pipeline with a natural gas sampling device according to claim 2, characterized in that, The cleaning component is provided with a protective cover (13) on the outside, and the protective cover (13) is installed on the pipe body (1).

4. A natural gas pipeline with a natural gas sampling device according to claim 1, characterized in that, The quick-connect assembly includes a male connector disposed on the body of the sampling tube (2) and a female connector disposed on the body of the absorption tube (14); The male connector includes a fixing plate (16) and a pin (19). The fixing plate (16) is symmetrically arranged at 180° on the end of the sampling tube (2) near the absorption tube (14). The pin (19) is vertically fixed on the side of the fixing plate (16) facing the absorption tube (14). The female connector includes a second fixing plate (18). The first fixing plate (16) is symmetrically arranged at 180° on the end of the sampling tube (2) near the absorption tube (14). The second fixing plate (18) has a U-shaped mounting cavity. The opening of the U-shaped mounting cavity is arranged radially towards the absorption tube (14). The opening side of the U-shaped mounting cavity forms a boss inside the second fixing plate (18). The second fixing plate (18) has a slot (17) corresponding to the pin (19). The slot (17) is located in the middle of the boss. A locking unit is installed in the U-shaped mounting cavity to lock the pin (19) after it is inserted into the slot (17).

5. A natural gas pipeline with a natural gas sampling device according to claim 4, characterized in that, The locking unit includes: a pressure rod (20) slidably inserted into the bottom of the U-shaped mounting cavity, and a hinge seat (21) is provided on the rod body of the pressure rod (20) inside the U-shaped mounting cavity. One end of a support rod (22) is symmetrically hinged to both sides of the hinge seat (21). The U-shaped mounting cavity is located on both sides of the boss and communicates with the slot (17) with a second limiting hole. A slide cylinder (23) is slidably inserted in the second limiting hole. A limiting rod (24) is slidably provided at one end of the slide cylinder (23) away from the slot (17). The limiting rod (24) is fixed on the inner wall of the U-shaped mounting cavity. The end of the slide cylinder (23) away from the slot (17) is hinged to the support rod (22). The pressure rod (20) has a deep hole coaxially opened at one end inside the U-shaped mounting cavity. A fixing rod (25) is fixedly installed on the boss. The fixing rod (25) is slidably inserted into the deep hole. A spring (26) is sleeved on the outside of the fixing rod (25). The spring (26) is elastically supported between the end face of the boss and the pressure rod (20). In the initial state, under the elastic force of the spring (26), the two support rods (22) are in a figure-eight shape.

6. A natural gas pipeline with a natural gas sampling device according to claim 1, characterized in that, The drive assembly includes: a mounting bracket (5) installed at the rear end of the filter plate (4), a drive motor (6) fixedly mounted on the mounting bracket (5), and the output end of the drive motor (6) being coaxially fixedly connected to the filter plate (4).

7. A natural gas pipeline with a natural gas sampling device according to claim 1, characterized in that, A sealing ring (27) is coaxially attached to one end of the sampling tube (2) near the absorption tube (14). A sealing groove (28) is opened on the absorption tube (14) corresponding to the sealing ring (27). The sealing ring (27) is elastically locked in the sealing groove (28).

8. A natural gas pipeline with a natural gas sampling device according to claim 5, characterized in that, A limiting groove is provided on the pin (19) corresponding to the outer diameter of the slide (23).

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