Filtering device and natural gas pipeline

Abstract

The utility model relates to natural gas delivery technical field discloses a filter equipment and natural gas delivery pipeline, include: one -way gas pipe, one -way gas pipe is cylindrical, the number of one -way gas pipe is two groups, quick -release structure, quick -release structure includes first quick -release part and second quick -release part, first quick -release part includes fixed mounting on the outer wall of one -way gas pipe first gas pipe, the outer wall of first gas pipe is fixedly installed with a group of fourth connecting flange, the top of first gas pipe is provided with filter jar, the outer wall of filter jar is fixedly installed with a group of fourth connecting flange, two groups of fourth connecting flanges are close, the inside of fourth connecting flange is provided with second hexagon bolt, the outer wall of filter jar is fixedly installed with fifth connecting flange, the top of filter jar is provided with first cover, reach the purpose of quick -release installation to the device, improve the dismounting efficiency of device, be convenient for to filter equipment and dismount cleaning, improve the cleaning efficiency of device, improve the flexibility that device uses.

Description

Technical Field

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

[0002] Natural gas, as a clean and efficient energy source, is widely used in industrial production and daily life. However, during the extraction, processing, and transportation of natural gas, it often carries a certain amount of impurities such as solid particles and liquid droplets. If these impurities are not effectively filtered, they can cause wear, blockage, and corrosion to natural gas transmission pipelines, valves, compressors, and other equipment, seriously affecting the safety and reliability of the natural gas transmission system.

[0003] Utility model patent CN215480772U discloses a natural gas filtration device, belonging to the field of natural gas technology. It includes a pre-filtration tank with a first air inlet on one side wall, a first air outlet at the top, and an impurity discharge hole at the bottom; and a fine filtration tank with a second air inlet at the bottom, a manhole at the top, and a second air outlet on the side wall. The second air inlet and the first air outlet are connected by a pipe. The pre-filtration tank contains a cyclone separator and a pre-filtration assembly; the fine filtration tank contains a fine filtration assembly; the pre-filtration assembly is located above the cyclone separator; the inlet of the cyclone separator is connected to the first air inlet, and the outlet at the bottom is connected to the impurity discharge hole. This natural gas filtration device is simple to operate, can thoroughly separate solid particulate impurities, liquids, and natural gas, enhances the separation effect of natural gas, and improves the purity of natural gas.

[0004] However, the aforementioned patent also has the following problems: During the natural gas filtration process, after prolonged use, impurities in the gas can clog the filtration device, affecting its filtration efficiency. Because the pre-filtration and fine filtration components are directly fixed inside the tank, and the pre-filtration component is vertically stacked with the cyclone separator, impurities easily accumulate between the components, forming "dead zones" and exacerbating the risk of clogging. Furthermore, the device has an integrated design, making disassembly difficult. It requires breaking the tank's sealing structure to remove the filter components, and maintenance requires stopping the machine and releasing the pressure inside the tank, which is time-consuming and poses safety hazards.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the technical problem of inconvenient cleaning of the filter structure mentioned above, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A filtration device, comprising:

[0008] One-way gas delivery pipe, the one-way gas delivery pipe is cylindrical, and there are two sets of one-way gas delivery pipes;

[0009] The quick-release structure includes a first quick-release part and a second quick-release part. The first quick-release part includes a first gas supply pipe fixedly installed on the outer wall of a one-way gas supply pipe. A set of fourth connecting flanges is fixedly installed on the outer wall of the first gas supply pipe. A filter canister is installed at the top of the first gas supply pipe. A set of fourth connecting flanges is fixedly installed on the outer wall of the filter canister. The two sets of fourth connecting flanges are tightly fitted together. Second hexagonal bolts are installed inside the fourth connecting flanges. A fifth connecting flange is fixedly installed on the outer wall of the filter canister. A first cover plate is installed at the top of the filter canister. A sixth connecting flange is fixedly installed on the outer wall of the first cover plate. The fifth connecting flange and the sixth connecting flange are tightly fitted together. Eight sets of second hexagonal bolts are installed inside the fifth connecting flange and the first cover plate. The second quick-release part includes a first fixing sleeve fixedly installed inside the filter canister. A first snap-fit ​​groove is opened inside the first fixing sleeve. A second snap-fit ​​groove is opened inside the first snap-fit ​​groove.

[0010] In a preferred embodiment of the present invention, the second quick-release part further includes a second fixed sleeve disposed inside the first fixed sleeve. Two sets of first snap-fit ​​plates are fixedly installed on the outer wall of the second fixed sleeve. A second snap-fit ​​plate is fixedly installed at the bottom of the first snap-fit ​​plate. The first snap-fit ​​plate is snap-fitted into the inside of the first snap-fit ​​groove, and the second snap-fit ​​plate is snap-fitted into the inside of the second snap-fit ​​groove. A pull strap is fixedly installed inside the first snap-fit ​​plate.

[0011] In a preferred embodiment of the present invention, the second quick-release part further includes a first threaded groove formed inside the second fixed sleeve, a third fixed sleeve fixedly installed at the bottom of the second fixed sleeve, a fourth fixed sleeve provided inside the second fixed sleeve, and a first threaded sleeve fixedly installed on the outer wall of the fourth fixed sleeve, the first threaded sleeve being spirally installed inside the first threaded groove.

[0012] In a preferred embodiment of this utility model, a first connecting flange is fixedly installed at one end of the unidirectional gas transmission pipe, a second connecting flange is fixedly installed at the other end of the unidirectional gas transmission pipe, a first connecting pipe is fixedly installed on the top of the first cover plate, a second connecting pipe is fixedly installed on the top of the first connecting pipe, a seventh connecting flange is fixedly installed at one end of the second connecting pipe, a third connecting pipe is provided on the top of the unidirectional gas transmission pipe, a set of eighth connecting flanges are fixedly installed at both ends of the third connecting pipe, the eighth connecting flanges are in close contact with the seventh connecting flanges, a limit bolt is provided between the eighth connecting flanges and the seventh connecting flanges, and a second gas transmission pipe is installed at the bottom of the third connecting pipe, with one end of the second gas transmission pipe fixedly installed inside the unidirectional gas transmission pipe.

[0013] In a preferred embodiment of the present invention, a filter element is fixedly installed at the bottom of the fourth fixing sleeve, a fifth fixing sleeve is fixedly installed at the bottom of the filter element, a second threaded groove is provided at the bottom of the fifth fixing sleeve, a sixth fixing sleeve is provided at the bottom of the fifth fixing sleeve, and a second threaded sleeve is fixedly installed at the top of the sixth fixing sleeve, the second threaded sleeve being spirally installed inside the second threaded groove.

[0014] In a preferred embodiment of this utility model, a filter plate is fixedly installed on the inner bottom of the sixth fixed sleeve, a fixing plate is fixedly installed on the bottom of the sixth fixed sleeve, a set of first exhaust pipes and a set of pressure gauges are fixedly installed on the outer wall of the filter tank, and a pressure relief valve is fixedly installed on the outer wall of the filter tank.

[0015] A natural gas transmission pipeline includes a filtration device as described in any one of the above claims and a natural gas transmission pipeline. A third connecting flange is fixedly installed at one end of the natural gas transmission pipeline. Eight sets of first hexagonal bolts are provided inside the third connecting flange. The first hexagonal bolts are spirally installed inside the first connecting flange and the second connecting flange.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. To achieve quick disassembly and installation of the device, improve the disassembly efficiency of the device, facilitate the disassembly and cleaning of the filtration equipment, improve the cleaning efficiency of the device, and increase the flexibility of the device in use.

[0018] 2. To achieve the purpose of filtering and removing impurities from natural gas, guide and transport the gas, improve the filtration efficiency of natural gas, and enhance the ease of use of the equipment.

[0019] 3. To achieve the purpose of connecting and fixing the device, improve the connection strength between the natural gas transmission pipeline and the filtration device, improve the fixing effect of the device, improve the sealing effect of the device, and optimize the user experience of the device.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a split schematic diagram of the fifth and sixth connecting flanges of this utility model;

[0024] Figure 3 This is a split schematic diagram of the seventh and eighth connecting flanges of this utility model;

[0025] Figure 4 This is a schematic diagram of the second fixed sleeve structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the filter element structure of this utility model;

[0027] Figure 6 This is a schematic diagram showing the disassembled fifth and sixth fixing sleeves of this utility model.

[0028] In the diagram: 10. One-way gas transmission pipe; 11. First connecting flange; 12. Second connecting flange; 13. Natural gas transmission pipeline; 14. Third connecting flange; 15. First hex bolt; 16. First gas transmission pipe; 17. Fourth connecting flange; 18. Filter tank; 19. Second hex bolt; 20. First exhaust pipe; 21. Pressure gauge; 22. Pressure relief valve; 23. Fifth connecting flange; 24. First fixing sleeve; 25. First snap-fit ​​groove; 26. Second snap-fit ​​groove; 27. First cover plate; 28. Sixth connecting flange; 29. ​​First 30. Connecting pipe; 31. Second connecting pipe; 32. Seventh connecting flange; 33. Third connecting pipe; 34. Eighth connecting flange; 35. Second gas supply pipe; 36. Second fixing sleeve; 37. First threaded groove; 38. First snap-fit ​​plate; 39. Pull strap; 40. Third fixing sleeve; 41. Filter element; 42. Fourth fixing sleeve; 43. First threaded sleeve; 44. Fifth fixing sleeve; 45. Sixth fixing sleeve; 46. Second threaded groove; 47. Second threaded sleeve; 48. Filter plate; 49. Fixing plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0030] Example 1: A filtration device and a natural gas transmission pipeline, specifically as follows... Figure 1 and Figure 2As shown, it includes a one-way gas supply pipe 10, which is cylindrical, and there are two sets of one-way gas supply pipes 10; a quick-release structure, which includes a first quick-release part and a second quick-release part. The first quick-release part includes a first gas supply pipe 16 fixedly installed on the outer wall of the one-way gas supply pipe 10. A set of fourth connecting flanges 17 is fixedly installed on the outer wall of the first gas supply pipe 16. A filter canister 18 is provided at the top of the first gas supply pipe 16. A set of fourth connecting flanges 17 is fixedly installed on the outer wall of the filter canister 18. The two sets of fourth connecting flanges 17 are closely attached, and a second sixth connecting flange is provided inside the fourth connecting flange 17. Angle bolts 19 are used to fix a fifth connecting flange 23 on the outer wall of the filter tank 18. A first cover plate 27 is provided on the top of the filter tank 18. A sixth connecting flange 28 is fixedly installed on the outer wall of the first cover plate 27. The fifth connecting flange 23 and the sixth connecting flange 28 are tightly attached. Eight sets of second hexagonal bolts 19 are provided inside the fifth connecting flange 23 and the first cover plate 27. The second quick-release part includes a first fixing sleeve 24 fixedly installed inside the filter tank 18. A first snap-fit ​​groove 25 is opened inside the first fixing sleeve 24, and a second snap-fit ​​groove 26 is opened inside the first snap-fit ​​groove 25. The device is disassembled and installed by using the quick-release structure. The two sets of fourth connecting flanges 17 are tightly attached. The second hexagonal bolts 19 are rotated to limit the filter tank 18 to the top of the first air supply pipe 16. The sixth connecting flange 28 is placed on top of the fifth connecting flange 23. The second hexagonal bolts 19 are rotated to limit the first cover plate 27 to the top of the filter tank 18.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the second quick-release part also includes a second fixed sleeve 35 disposed inside the first fixed sleeve 24. Two sets of first snap-fit ​​plates 37 are fixedly installed on the outer wall of the second fixed sleeve 35. A second snap-fit ​​plate 38 is fixedly installed at the bottom of the first snap-fit ​​plate 37. The first snap-fit ​​plate 37 is snapped into the inside of the first snap-fit ​​groove 25, and the second snap-fit ​​plate 38 is snapped into the inside of the second snap-fit ​​groove 26. A pull strap 39 is fixedly installed inside the first snap-fit ​​plate 37. The first snap-fit ​​plate 37 is snapped into the inside of the first snap-fit ​​groove 25, the second snap-fit ​​plate 38 is snapped into the inside of the second snap-fit ​​groove 26, and the second fixed sleeve 35 is snapped into the inside of the first fixed sleeve 24.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the second quick-release part also includes a first threaded groove 36 formed inside the second fixed sleeve 35. A third fixed sleeve 40 is fixedly installed at the bottom of the second fixed sleeve 35. A fourth fixed sleeve 42 is provided inside the second fixed sleeve 35. A first threaded sleeve 43 is fixedly installed on the outer wall of the fourth fixed sleeve 42. The first threaded sleeve 43 is screwed into the inside of the first threaded groove 36. Rotating the filter element 41 screws the first threaded sleeve 43 into the inside of the first threaded groove 36, and limits the fourth fixed sleeve 42 to be installed inside the second fixed sleeve 35.

[0033] Based on the above, the structure of the unidirectional gas supply pipe 10, the first gas supply pipe 16, the fourth connecting flange 17, the filter tank 18, the second hexagonal bolt 19, the fifth connecting flange 23, the first fixing sleeve 24, the first snap-fit ​​groove 25, the second snap-fit ​​groove 26, the first cover plate 27, the sixth connecting flange 28, the second fixing sleeve 35, the first threaded groove 36, the first snap-fit ​​plate 37, the second snap-fit ​​plate 38, the pull strap 39, the third fixing sleeve 40, the filter element 41, the fourth fixing sleeve 42, and the first threaded sleeve 43 achieves the purpose of quick disassembly and installation of the device, improves the disassembly efficiency of the device, facilitates the disassembly and cleaning of the filtration equipment, improves the cleaning efficiency of the device, and enhances the flexibility of the device in use.

[0034] Example 2: Based on Example 1, specifically as follows... Figure 1 and Figure 3 As shown, a first connecting flange 11 is fixedly installed at one end of the unidirectional gas supply pipe 10, and a second connecting flange 12 is fixedly installed at the other end. A first connecting pipe 29 is fixedly installed on the top of the first cover plate 27, and a second connecting pipe 30 is fixedly installed on the top of the first connecting pipe 29. A seventh connecting flange 31 is fixedly installed at one end of the second connecting pipe 30. A third connecting pipe 32 is provided at the top of the unidirectional gas supply pipe 10. A set of eighth connecting flanges 33 are fixedly installed at both ends of the third connecting pipe 32. The eighth connecting flanges 33 and the seventh connecting flange 31 are tightly attached, and a limit bolt is provided between the eighth connecting flanges 33 and the seventh connecting flange 31. A second gas supply pipe 34 is installed at the bottom of the third connecting pipe 32, and one end of the second gas supply pipe 34 is fixedly installed inside the unidirectional gas supply pipe 10. By tightly attaching the two sets of eighth connecting flanges 33 and the seventh connecting flange 31, and using the limit bolt, the third connecting pipe 32 is installed between the two sets of second connecting pipes 30, and the gas is auxiliaryly output through the second gas supply pipe 34.

[0035] Specifically, such as Figure 1 , Figure 5 and Figure 6As shown, a filter element 41 is fixedly installed at the bottom of the fourth fixed sleeve 42, and a fifth fixed sleeve 44 is fixedly installed at the bottom of the filter element 41. A second threaded groove 46 is formed at the bottom of the fifth fixed sleeve 44, and a sixth fixed sleeve 45 is provided at the bottom of the fifth fixed sleeve 44. A second threaded sleeve 47 is fixedly installed at the top of the sixth fixed sleeve 45, and the second threaded sleeve 47 is screwed into the second threaded groove 46. By rotating the sixth fixed sleeve 45, the second threaded sleeve 47 is screwed into the second threaded groove 46, and the sixth fixed sleeve 45 is positioned at the bottom of the fifth fixed sleeve 44, thus filtering and collecting impurities through the sixth fixed sleeve 45.

[0036] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a filter plate 48 is fixedly installed on the inner bottom of the sixth fixed sleeve 45, and a fixing plate 49 is fixedly installed on the bottom of the sixth fixed sleeve 45. A set of first exhaust pipes 20 and a set of pressure gauges 21 are fixedly installed on the outer wall of the filter tank 18, and a pressure relief valve 22 is fixedly installed on the outer wall of the filter tank 18. Rotating the fixing plate 49 causes the sixth fixed sleeve 45 to rotate, allowing gas to be conveyed through the filter plate 48 and discharged through the first exhaust pipes 20. The pressure gauges 21 are activated to guide the gas flow, and the pressure relief valve 22 protects the pressure gauges 21.

[0037] Based on the above, the structure of the unidirectional gas transmission pipe 10, the first connecting flange 11, the second connecting flange 12, the first cover plate 27, the first connecting pipe 29, the second connecting pipe 30, the seventh connecting flange 31, the third connecting pipe 32, the eighth connecting flange 33, the second gas transmission pipe 34, the filter element 41, the fifth fixing sleeve 44, the sixth fixing sleeve 45, the second threaded groove 46, the second threaded sleeve 47, the filter plate 48, and the fixing plate 49 achieves the purpose of filtering and removing impurities from natural gas, guiding and transporting the gas, improving the filtration efficiency of natural gas, and improving the convenience of using the device.

[0038] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 As shown, a natural gas transmission pipeline includes a filtration device as described above and a natural gas transmission pipeline 13. A third connecting flange 14 is fixedly installed at one end of the natural gas transmission pipeline 13. Eight sets of first hexagonal bolts 15 are provided inside the third connecting flange 14. The first hexagonal bolts 15 are screwed into the interiors of the first connecting flange 11 and the second connecting flange 12. By tightly pressing the third connecting flange 14 against the first connecting flange 11 and the two sets of second connecting flanges 12 against each other, and rotating the first hexagonal bolts 15, the two sets of unidirectional gas transmission pipes 10 are connected to the natural gas transmission pipeline 13 to transport natural gas.

[0039] In summary, the structure of the unidirectional gas transmission pipe 10, the first connecting flange 11, the second connecting flange 12, the natural gas transmission pipeline 13, the third connecting flange 14, and the first hexagonal bolt 15 achieves the purpose of connecting and fixing the device, improving the connection strength between the natural gas transmission pipeline and the filter device, improving the fixing effect of the device, improving the sealing effect of the device, and optimizing the user experience of the device.

[0040] Working principle: The unidirectional gas transmission pipe 10 is cylindrical, and there are two sets for unidirectional natural gas transmission. The quick-release structure includes a first quick-release section and a second quick-release section, enabling rapid assembly and disassembly of the filter tank 18 and the gas transmission pipeline. The first gas transmission pipe 16 connects to the filter tank 18 via the fourth connecting flange 17 and is secured with the second hexagonal bolts 19. The top of the filter tank 18 connects to the sixth connecting flange 28 of the first cover plate 27 via the fifth connecting flange 23 and is secured with eight sets of second hexagonal bolts 19. The second fixing sleeve 35... The filter element 41 is vertically fixed by means of the first snap-fit ​​plate 37 and the second snap-fit ​​plate 38 snapping into the first snap-fit ​​groove 25 and the second snap-fit ​​groove 26 of the first fixed sleeve 24, and the first threaded sleeve 43 of the fourth fixed sleeve 42 is screwed into the first threaded groove 36 of the second fixed sleeve 35. The sixth fixed sleeve 45 is screwed into the second threaded groove 46 of the fifth fixed sleeve 44 by means of the second threaded sleeve 47, forming an impurity collection chamber. The filter plate 48 is located at the bottom inner side of the sixth fixed sleeve 45. Used for gas passage and impurity blocking, natural gas enters the one-way gas transmission pipe 10 through the first connecting flange 11, and is diverted to the filter tank 18 through the third connecting pipe 32 and the second gas transmission pipe 34. Natural gas passes through the filter element 41 and the sixth fixed sleeve 45 in sequence, and finally enters the first exhaust pipe 20 through the filter plate 48 for discharge. During the filtration process, the pressure gauge 21 monitors the pressure in real time, and the pressure relief valve 22 prevents the pressure from being too high. The third connecting flange 14 is connected to the first connecting flange 11 and the second connecting flange 12 of the one-way gas transmission pipe 10 and is fastened with the first hex bolt 15. The third connecting pipe 32 is connected to the seventh connecting flange 31 through the eighth connecting flange 33 to realize the parallel or series connection of multiple filter devices. Remove the second hex bolt 19, remove the first cover plate 27 and the filter tank 18, rotate the fourth fixed sleeve 42 to disconnect the connection between the first threaded sleeve 43 and the first threaded groove 36, take out the filter element 41, rotate the sixth fixed sleeve 45 to disconnect the connection between the second threaded sleeve 47 and the second threaded groove 46, and clean the impurity collection chamber. The quick-release structure enables rapid separation of the filter tank 18 from the gas supply pipe, reducing maintenance difficulty. The filter element 41 works in conjunction with the sixth fixed sleeve 45 to improve filtration accuracy and extend service life. The pressure gauge 21 and the pressure relief valve 22 work together to ensure safe system operation. The third connecting pipe 32 and the eighth connecting flange 33 enable flexible combination of multiple filter devices to adapt to different working conditions. The second gas supply pipe 34 provides an additional gas passage to enhance system stability.

[0041] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A filtration device, characterized in that, include: One-way gas delivery pipe (10), the one-way gas delivery pipe (10) is cylindrical, and there are two sets of one-way gas delivery pipes (10); The quick-release structure includes a first quick-release part and a second quick-release part. The first quick-release part includes a first gas pipe (16) fixedly installed on the outer wall of a one-way gas pipe (10). A set of fourth connecting flanges (17) is fixedly installed on the outer wall of the first gas pipe (16). A filter canister (18) is provided at the top of the first gas pipe (16). A set of fourth connecting flanges (17) is fixedly installed on the outer wall of the filter canister (18). The two sets of fourth connecting flanges (17) are tightly attached. A second hexagonal bolt (19) is provided inside the fourth connecting flange (17). A fifth connecting flange is fixedly installed on the outer wall of the filter canister (18). The top of the filter tank (18) is provided with a first cover plate (27), and a sixth connecting flange (28) is fixedly installed on the outer wall of the first cover plate (27). The fifth connecting flange (23) is in close contact with the sixth connecting flange (28). Eight sets of second hexagonal bolts (19) are provided inside the fifth connecting flange (23) and the first cover plate (27). The second quick-release part includes a first fixing sleeve (24) fixedly installed inside the filter tank (18). The first fixing sleeve (24) has a first snap-fit ​​groove (25) inside, and the first snap-fit ​​groove (25) has a second snap-fit ​​groove (26) inside.

2. The filtration device according to claim 1, characterized in that, The second quick-release part also includes a second fixed sleeve (35) disposed inside the first fixed sleeve (24). Two sets of first snap-fit ​​plates (37) are fixedly installed on the outer wall of the second fixed sleeve (35). A second snap-fit ​​plate (38) is fixedly installed at the bottom of the first snap-fit ​​plate (37). The first snap-fit ​​plate (37) is snapped into the inside of the first snap-fit ​​groove (25), and the second snap-fit ​​plate (38) is snapped into the inside of the second snap-fit ​​groove (26). A pull strap (39) is fixedly installed inside the first snap-fit ​​plate (37).

3. The filtration device according to claim 2, characterized in that, The second quick-release part also includes a first threaded groove (36) opened inside the second fixed sleeve (35), a third fixed sleeve (40) fixedly installed at the bottom of the second fixed sleeve (35), a fourth fixed sleeve (42) provided inside the second fixed sleeve (35), a first threaded sleeve (43) fixedly installed on the outer wall of the fourth fixed sleeve (42), and the first threaded sleeve (43) is spirally installed inside the first threaded groove (36).

4. The filtration device according to claim 1, characterized in that, One end of the one-way gas pipe (10) is fixedly installed with a first connecting flange (11), and the other end of the one-way gas pipe (10) is fixedly installed with a second connecting flange (12). The top of the first cover plate (27) is fixedly installed with a first connecting pipe (29), the top of the first connecting pipe (29) is fixedly installed with a second connecting pipe (30), one end of the second connecting pipe (30) is fixedly installed with a seventh connecting flange (31), the top of the one-way gas pipe (10) is provided with a third connecting pipe (32), both ends of the third connecting pipe (32) are respectively fixedly installed with a set of eighth connecting flanges (33), the eighth connecting flange (33) is in close contact with the seventh connecting flange (31), a limit bolt is provided between the eighth connecting flange (33) and the seventh connecting flange (31), and a second gas pipe (34) is installed at the bottom of the third connecting pipe (32), one end of the second gas pipe (34) is fixedly installed inside the one-way gas pipe (10).

5. The filtration device according to claim 3, characterized in that, The bottom of the fourth fixed sleeve (42) is fixedly installed with a filter element (41), the bottom of the filter element (41) is fixedly installed with a fifth fixed sleeve (44), the bottom of the fifth fixed sleeve (44) is provided with a second threaded groove (46), the bottom of the fifth fixed sleeve (44) is provided with a sixth fixed sleeve (45), the top of the sixth fixed sleeve (45) is fixedly installed with a second threaded sleeve (47), and the second threaded sleeve (47) is spirally installed inside the second threaded groove (46).

6. The filtration device according to claim 5, characterized in that, A filter plate (48) is fixedly installed on the bottom inner side of the sixth fixed sleeve (45), a fixing plate (49) is fixedly installed on the bottom of the sixth fixed sleeve (45), a set of first exhaust pipes (20) and a set of pressure gauges (21) are fixedly installed on the outer wall of the filter tank (18), and a pressure relief valve (22) is fixedly installed on the outer wall of the filter tank (18).

7. A natural gas transmission pipeline, characterized in that, The filter device and natural gas pipeline (13) according to any one of claims 1-6 are included. A third connecting flange (14) is fixedly installed at one end of the natural gas pipeline (13). Eight sets of first hexagonal bolts (15) are provided inside the third connecting flange (14). The first hexagonal bolts (15) are spirally installed inside the first connecting flange (11) and the second connecting flange (12).

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