A natural gas purification membrane separation device

Abstract

The utility model discloses a natural gas purification membrane separation device belongs to natural gas processing technical field, and its technical scheme main points include the box, the inside fixed connection of box has the membrane body, the right side fixed connection of box has the pipeline adjusting assembly, and the top and bottom of pipeline adjusting assembly all are fixedly connected with the connecting assembly, the connecting assembly includes the fixed pipe, the surface fixed connection of fixed pipe has the annular air bag, and the fixed pipe inserts the inside of external natural gas delivery pipeline, the right side fixed connection of annular air bag bottom has the gas delivery pipe, solve the safety of existing membrane separation device not good, in the natural gas delivery process can produce a large number of pressure fluctuation, owing to lack pipeline connection structure, the docking of telescopic pipe and installation box is easy to cause sealing failure because of pressure impact, leads to natural gas leakage, not only causes the resource waste, still exists the security risk such as explosion, poisoning, reduced the practicability of the device's problem.

Description

Technical Field

[0001] This utility model relates to the field of natural gas processing technology, and in particular to a natural gas purification membrane separation device. Background Technology

[0002] Natural gas purification membrane separation equipment is a new type of separation equipment developed to meet the needs of the natural gas industry for efficient impurity removal and quality improvement. It relies on the selective permeability of polymer separation membranes to achieve precise separation of methane and impurities in natural gas. It is widely applicable to purification processes in scenarios such as associated gas from oil fields, shale gas, coalbed methane, and LNG feedstock gas.

[0003] Most existing membrane separation devices use high-seal fasteners to fix the PET membrane to the pipeline. When the PET membrane needs to be cleaned, the high-seal fasteners need to be removed. However, since the PET membrane itself is relatively fragile, the frequent disassembly process will damage the PET membrane itself.

[0004] An existing patent (publication number: CN216259959U) discloses a membrane separation device for natural gas-helium separation. The fragile PET membrane is fixedly installed in the installation box using a high-sealing fastener. In use, rotating the adjusting screw drives the drive column to connect the telescopic tube connecting the inlet and outlet pipes to the installation box for sealing. When it is necessary to clean the PET membrane inside the installation box, rotating the adjusting screw in the opposite direction can detach the installation box from the inlet and outlet pipes, and the installation box can be removed from one side of the protective box. This allows for cleaning of the PET membrane inside the installation box without removing the high-sealing fastener from the protective box, thus avoiding damage to the fragile PET membrane.

[0005] Existing patents offer solutions to the above problems, but their safety is poor. During natural gas transportation, there will be a lot of pressure fluctuations. Due to the lack of pipeline connection structure, the connection between the telescopic pipe and the installation box is prone to sealing failure due to pressure impact, resulting in natural gas leakage. This not only wastes resources but also poses safety hazards such as explosion and poisoning, reducing the practicality of the device.

[0006] Therefore, a natural gas purification membrane separation device is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a natural gas purification membrane separation device that can solve the problems of poor safety of existing membrane separation devices, large pressure fluctuations during natural gas transportation, and the lack of pipeline connection structure, which can easily lead to sealing failure at the joint between the telescopic pipe and the installation box due to pressure impact, resulting in natural gas leakage. This not only wastes resources but also poses safety hazards such as explosion and poisoning, reducing the practicality of the device.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a natural gas purification membrane separation device, comprising a housing, a membrane fixedly connected inside the housing, a pipeline adjustment assembly fixedly connected to the right side of the housing, and connecting assemblies fixedly connected to the top and bottom of the pipeline adjustment assembly, the connecting assemblies comprising a fixed pipe, an annular gas bladder fixedly connected to the surface of the fixed pipe, the fixed pipe being embedded inside an external natural gas transmission pipeline, a gas transmission pipe fixedly connected to the right side of the bottom of the annular gas bladder, and a gas transmission valve fixedly connected to the other end of the gas transmission pipe, a connecting ring fixedly connected to the side of the fixed pipe away from the annular gas bladder, and a rotating ring rotatably connected to the surface of the connecting ring, a groove provided on the inner wall of the rotating ring near the annular gas bladder, the groove engaging with a protrusion at the connection end of the external natural gas transmission pipeline.

[0009] Preferably, the pipe adjustment assembly includes a fixing plate, the top and bottom of the fixing plate are provided with connecting grooves, and cylinders are fixedly connected inside the two connecting grooves. L-shaped plates are fixedly connected to opposite sides of the two cylinders, and metal universal tubes are fixedly connected to the end of the L-shaped plate away from the cylinders. The two metal universal tubes are fixedly connected to the top and bottom of the box respectively, and the other end of the metal universal tubes is fixedly connected to the fixing pipe.

[0010] Preferably, the two metal universal tubes extend into the interior of the box on opposite sides and are fixedly connected to exhaust plates, and the two exhaust plates are fixedly connected to the top and bottom of the inner wall of the box, respectively.

[0011] Preferably, the top and bottom of the housing are provided with mounting holes for use with metal universal tubes, and the surface of the metal universal tube is in contact with the inner wall of the mounting hole.

[0012] Preferably, the inner wall of the rotating ring has a rotating groove on the side away from the annular airbag, which is used to cooperate with the connecting ring, and the surface of the connecting ring is in contact with the inner wall of the rotating groove.

[0013] Preferably, each of the four corners of the rotating ring surface is threaded with a positioning bolt, and the port of the positioning bolt extends into the interior of the rotating groove.

[0014] Preferably, the surface of the fixing tube is provided with an annular groove on the side away from the connecting ring, which is used to cooperate with the annular airbag, and the surface of the annular airbag is in contact with the inner wall of the annular groove.

[0015] Preferably, gas detectors are fixedly connected to the right side of the top and bottom of the enclosure, and the detection probes of the gas detectors extend into the interior of the enclosure.

[0016] Preferably, a connecting valve is fixedly connected to the top of the front side of the housing, and the connecting valve is located on the top of the membrane. A data transmitter is fixedly connected to the right side of the top of the front side of the housing, and the data transmitter is electrically connected to the gas detector.

[0017] Preferably, a movable door is movably connected to the front side of the box, and a rubber sealing strip is fixedly connected to the side of the movable door near the box. A mounting plate is fixedly connected to the rear side of the box, and several fixing bolts are threaded to the top and bottom of the mounting plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This application, by setting up a pipeline adjustment component, can drive the L-shaped plate to move synchronously through the extension and retraction of the cylinder, thereby moving the metal universal tube. This not only allows for angle adjustment in conjunction with the adjustability of the metal universal tube, facilitating installation, but also supports the metal universal tube, reducing swaying during natural gas transportation, ensuring stable gas transportation, and improving the ease of use of the device.

[0020] 2. This application, by setting up a connecting component, can achieve pre-positioning by rotating the annular groove and the protrusion at the connection end of the external natural gas transmission pipeline, and achieve secure locking with the positioning bolts, eliminating the need for repeated manual calibration. At the same time, by using the gas transmission channel formed by the connecting valve and the gas transmission pipe, the annular gasbag can be inflated to fill the gap between the fixed pipe and the external natural gas transmission pipeline, forming an efficient sealing environment, avoiding gas leakage, ensuring the smooth operation of natural gas processing, and improving the stability of the device. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the natural gas purification membrane separation device of this utility model;

[0022] Figure 2 This is a connection diagram of the housing, pipe adjustment assembly, and connecting assembly of this utility model;

[0023] Figure 3 This is a connection diagram of the box body, membrane body, movable door, mounting plate, and connecting valve of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the pipeline adjustment component of this utility model.

[0026] In the diagram, 1. Box body; 2. Membrane body; 3. Pipe adjustment assembly; 301. Fixing plate; 302. Connecting groove; 303. Cylinder; 304. L-shaped plate; 305. Metal universal tube; 4. Connecting assembly; 401. Fixing pipe; 402. Annular airbag; 403. Gas supply pipe; 404. Gas supply valve; 405. Connecting ring; 406. Rotating ring; 407. Slot; 5. Exhaust plate; 6. Mounting hole; 7. Rotating groove; 8. Positioning bolt; 9. Annular groove; 10. Gas detector; 11. Connecting valve; 12. Data transmitter; 13. Movable door; 14. Rubber sealing strip; 15. Mounting plate; 16. Fixing bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 The present invention provides the following technical solution:

[0029] A natural gas purification membrane separation device includes a housing 1, a membrane 2 fixedly connected inside the housing 1, a pipeline adjustment assembly 3 fixedly connected to the right side of the housing 1, and connecting assemblies 4 fixedly connected to the top and bottom of the pipeline adjustment assembly 3. The connecting assemblies 4 include a fixed pipe 401, an annular airbag 402 fixedly connected to the surface of the fixed pipe 401, and the fixed pipe 401 is embedded inside an external natural gas transmission pipeline. A gas transmission pipe 403 is fixedly connected to the right side of the bottom of the annular airbag 402, and a gas transmission valve 404 is fixedly connected to the other end of the gas transmission pipe 403. A connecting ring 405 is fixedly connected to the side of the fixed pipe 401 away from the annular airbag 402, and a rotating ring 406 is rotatably connected to the surface of the connecting ring 405. A groove 407 is provided on the inner wall of the rotating ring 406 near the annular airbag 402, and the groove 407 engages with a protrusion at the connection end of the external natural gas transmission pipeline.

[0030] In this embodiment: the cylinder 303 drives the L-shaped plate 304 to move smoothly, simultaneously moving the metal universal tube 305. This not only provides stable support for the metal universal tube 305, greatly reducing the shaking caused by airflow impact during natural gas transportation and ensuring the stability of gas transportation, but also, combined with the adjustability of the metal universal tube 305, allows for flexible adjustment of the docking angle of the connecting component 4, facilitating equipment installation and improving the ease of use of the device. Then, through the action of the fixing pipe 401, it can be accurately embedded into the external natural gas transportation pipeline. The pre-positioning mechanism, combined with the rotating structure formed by the rotating ring 406 and the connecting ring 405, ensures that the groove 407 on the inner wall of the rotating ring 406 is precisely aligned with the protrusion at the connection end of the external natural gas pipeline and engages and locks, thus enabling the installation of the connecting component 4. Simultaneously, with the help of the gas delivery channel formed by the gas delivery valve 404 and the gas delivery pipe 403, the annular airbag 402 can be smoothly inflated, causing it to expand and fit tightly against the inner wall of the external natural gas pipeline, forming an efficient sealing space, preventing leakage, ensuring smooth processing, and improving the stability of the device.

[0031] Specifically, such as Figure 5 As shown, the pipe adjustment assembly 3 includes a fixing plate 301. The top and bottom of the fixing plate 301 are provided with connecting grooves 302, and cylinders 303 are fixedly connected inside the two connecting grooves 302. L-shaped plates 304 are fixedly connected to opposite sides of the two cylinders 303, and metal universal tubes 305 are fixedly connected to the end of the L-shaped plate 304 away from the cylinders 303. The two metal universal tubes 305 are fixedly connected to the top and bottom of the housing 1, respectively, and the other end of the metal universal tubes 305 is fixedly connected to the fixing pipe 401.

[0032] Specifically, such as Figure 2 As shown, the two metal universal tubes 305 extend into the interior of the housing 1 on opposite sides and are fixedly connected to exhaust plates 5, and the two exhaust plates 5 are fixedly connected to the top and bottom of the inner wall of the housing 1, respectively.

[0033] Specifically, such as Figure 3 As shown, the top and bottom of the housing 1 are provided with mounting holes 6 for use with the metal universal tube 305, and the surface of the metal universal tube 305 is in contact with the inner wall of the mounting hole 6.

[0034] In this embodiment: the exhaust plate 5 can form a gas guiding structure, which can not only evenly spray the gas entering the box 1 onto the surface of the membrane 2, ensuring that each area of ​​the membrane 2 fully participates in the purification process and improves the purification efficiency, but also expand the collection range and guide the filtered gas to be discharged from the bottom metal universal tube 305. At the same time, through the cooperation of the metal universal tube 305 and the mounting hole 6, the metal universal tube 305 is tightly connected to the box 1 to form a stable gas delivery channel, ensuring the stability of natural gas delivery and improving the convenience of using the pipeline adjustment component 3.

[0035] Specifically, such as Figure 4 As shown, a rotating groove 7 is provided on the side of the inner wall of the rotating ring 406 away from the annular airbag 402, which is used to cooperate with the connecting ring 405, and the surface of the connecting ring 405 is in contact with the inner wall of the rotating groove 7.

[0036] Specifically, such as Figure 4 As shown, positioning bolts 8 are threaded at the four corners of the rotating ring 406, and the ports of the positioning bolts 8 extend into the interior of the rotating groove 7.

[0037] Specifically, such as Figure 4 As shown, an annular groove 9 is provided on the side of the fixed tube 401 away from the connecting ring 405 to cooperate with the annular airbag 402, and the surface of the annular airbag 402 is in contact with the inner wall of the annular groove 9.

[0038] In this embodiment: the use of the annular airbag 402 in conjunction with the annular groove 9 not only provides installation and positioning space for the annular airbag 402, but also allows the annular airbag 402 to be stored and protected when it is not inflated, preventing the airbag from being deformed by external force and affecting the connection of the fixing pipe 401. This allows the fixing pipe 401 to be smoothly embedded into the external natural gas transmission pipeline, laying the foundation for subsequent connection. In conjunction with the rotating structure formed by the connecting ring 405 and the rotating groove 7, the slot 407 on the inner wall of the rotating ring 406 and the protrusion at the connection end of the external natural gas transmission pipeline are pre-positioned. At the same time, the positioning bolt 8 is tightened to extend through the rotating ring 406 into the interior of the connecting ring 405 to complete the fixation, achieving stable installation of the equipment and improving the ease of use of the connecting component 4.

[0039] Specifically, such as Figure 1 , Figure 2 , Figure 3 As shown, gas detectors 10 are fixedly connected to the right side of the top and bottom of the housing 1, and the detection probe of the gas detector 10 extends into the interior of the housing 1.

[0040] Specifically, such as Figure 1 , Figure 2 , Figure 3As shown, a connecting valve 11 is fixedly connected to the top of the front side of the housing 1, and the connecting valve 11 is located on the top of the membrane 2. A data transmitter 12 is fixedly connected to the right side of the top of the front side of the housing 1, and the data transmitter 12 is electrically connected to the gas detector 10.

[0041] Specifically, such as Figure 3 As shown, a movable door 13 is movably connected to the front side of the box 1, and a rubber sealing strip 14 is fixedly connected to the side of the movable door 13 near the box 1. A mounting plate 15 is fixedly connected to the rear side of the box 1, and several fixing bolts 16 are threadedly connected to the top and bottom of the mounting plate 15.

[0042] In this embodiment: the mounting plate 15 and the fixing bolts 16 work together to allow the fixing bolts 16 to pass through the mounting plate 15 and connect with other equipment via threads, thus achieving stable fixation of the equipment. This effectively resists external impacts and ensures stable operation of the equipment. At the same time, the movable door 13 allows for flexible opening and closing of the housing 1, facilitating maintenance. When the movable door 13 is closed, the rubber sealing strip 14 deforms, filling the gap between the movable door 13 and the housing 1 to form a sealed space, preventing leakage and ensuring smooth processing. This improves the stability of the device. Then, the gas detector 10 can monitor the gas conditions at both ends of the membrane 2 in real time and transmit the data to the external control terminal via the data transmitter 12, allowing operators to monitor the purification status. Simultaneously, the connecting valve 11 can discharge the gas that has not permeated from the top of the membrane 2, completing the gas separation operation and improving the ease of use of the device.

[0043] Working Principle: During the purification and processing of natural gas, firstly, manually tighten the fixing bolt 16 to allow it to pass through the mounting plate 15 and connect with other equipment via threads, thus completing the fixed installation of the entire device and preventing displacement due to vibration during subsequent operation. Next, start the cylinder 303 to move the L-shaped plate 304, simultaneously pushing the metal universal tube 305 to move. The adjustability of the metal universal tube 305 allows for flexible adjustment of the docking angle of the connecting component 4, enabling the fixed tube 401 to be precisely embedded into the external natural gas transmission pipeline for pre-positioning. Combined with the rotating structure formed by the rotating ring 406 and the connecting ring 405, the rotating ring 406 rotates smoothly under the constraint of the connecting ring 405, adjusting the position of the slot 407. This allows the protrusion at the connection end of the external natural gas transmission pipeline to engage and lock into the slot 407. Simultaneously, tighten the positioning bolts 8 at the four corners of the rotating ring 406 to pass through the rotating ring 406 and connect with the connecting ring 405 via threads, thus securing the fixed tube 401 firmly. Then, through the gas supply valve 404, the external gas pump can inflate the annular gas bag 402. The annular gas bag 402 expands and fits tightly against the inner wall of the external natural gas pipeline, forming a highly efficient sealed space to prevent leakage and ensure smooth processing. This completes the installation of the equipment and the external natural gas pipeline. External natural gas enters the top metal universal pipe 305 through the top fixed pipe 401, and is then transported to the top exhaust plate 5 through the metal universal pipe 305. Finally, it is evenly sprayed on the surface of the membrane 2, allowing each area of ​​the membrane 2 to fully participate in the purification process. The target components in the natural gas are purified through the membrane 2 and transported to the subsequent processing equipment through the bottom exhaust plate 5 and the bottom connecting component 4. The impurities that do not pass through remain at the top of the membrane 2 and are discharged through the connecting valve 11, completing the gas separation operation. During this process, the gas detector 10 can detect the gas status at both ends of the membrane 2 in real time and transmit the data to the external control terminal through the data transmitter 12, so that the operator can monitor the purification progress.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas purification membrane separation device, comprising a housing (1), characterized in that: A membrane (2) is fixedly connected inside the housing (1). A pipe adjustment assembly (3) is fixedly connected to the right side of the housing (1). A connecting assembly (4) is fixedly connected to the top and bottom of the pipe adjustment assembly (3). The connecting assembly (4) includes a fixed pipe (401). An annular airbag (402) is fixedly connected to the surface of the fixed pipe (401). The fixed pipe (401) is embedded inside the external natural gas transmission pipeline. The bottom right side of the annular airbag (402) is fixedly connected to... There is a gas transmission pipe (403), and a gas transmission valve (404) is fixedly connected to the other end of the gas transmission pipe (403). A connecting ring (405) is fixedly connected to the side of the fixed pipe (401) away from the annular airbag (402), and a rotating ring (406) is rotatably connected to the surface of the connecting ring (405). A groove (407) is provided on the inner wall of the rotating ring (406) near the annular airbag (402), and the groove (407) engages with the protrusion at the connection end of the external natural gas transmission pipeline.

2. A natural gas purification membrane separation device according to claim 1, characterized in that: The pipe adjustment assembly (3) includes a fixing plate (301). The top and bottom of the fixing plate (301) are provided with connecting grooves (302), and cylinders (303) are fixedly connected inside the two connecting grooves (302). L-shaped plates (304) are fixedly connected to the opposite sides of the two cylinders (303), and metal universal tubes (305) are fixedly connected to the end of the L-shaped plate (304) away from the cylinders (303). The two metal universal tubes (305) are fixedly connected to the top and bottom of the box (1) respectively, and the other end of the metal universal tubes (305) is fixedly connected to the fixing pipe (401).

3. A natural gas purification membrane separation device according to claim 2, wherein: Two metal universal tubes (305) extend into the interior of the box (1) on opposite sides and are fixedly connected to exhaust plates (5), and the two exhaust plates (5) are fixedly connected to the top and bottom of the inner wall of the box (1) respectively.

4. A natural gas purification membrane separation device according to claim 2, wherein: The top and bottom of the housing (1) are provided with mounting holes (6) for use with metal universal tubes (305), and the surface of the metal universal tubes (305) is in contact with the inner wall of the mounting holes (6).

5. A natural gas purification membrane separation device according to claim 1, wherein: The inner wall of the rotating ring (406) away from the annular airbag (402) has a rotating groove (7) for use with the connecting ring (405), and the surface of the connecting ring (405) is in contact with the inner wall of the rotating groove (7).

6. A natural gas purification membrane separation device according to claim 5, wherein: The four corners of the rotating ring (406) are threaded with positioning bolts (8), and the ports of the positioning bolts (8) extend into the interior of the rotating groove (7).

7. A natural gas purification membrane separation device according to claim 1, wherein: The fixed tube (401) has an annular groove (9) on the side away from the connecting ring (405) for use with the annular airbag (402), and the surface of the annular airbag (402) is in contact with the inner wall of the annular groove (9).

8. A natural gas purification membrane separation device according to claim 1, wherein: Gas detectors (10) are fixedly connected to the right side of the top and bottom of the box (1), and the detection probe of the gas detector (10) extends into the interior of the box (1).

9. A natural gas purification membrane separation device according to claim 8, wherein: A connecting valve (11) is fixedly connected to the top of the front side of the housing (1), and the connecting valve (11) is located on the top of the membrane (2). A data transmitter (12) is fixedly connected to the right side of the top of the front side of the housing (1), and the data transmitter (12) is electrically connected to the gas detector (10).

10. A natural gas purification membrane separation device according to claim 1, characterized in that: The front side of the box (1) is movably connected to a movable door (13), and a rubber sealing strip (14) is fixedly connected to the side of the movable door (13) near the box (1). The rear side of the box (1) is fixedly connected to a mounting plate (15), and several fixing bolts (16) are threadedly connected to the top and bottom of the mounting plate (15).

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