Spiral propelling pipe cleaner for natural gas pipeline

Abstract

The utility model relates to the field of natural gas pipelines, and discloses a spiral propelling pipe cleaner of a natural gas pipeline, which comprises a water tank, a first rotating shaft and a second rotating shaft are respectively and rotatably connected to the middle of two ends of the water tank, and circular plates are sleeved on the side walls of the first rotating shaft and the second rotating shaft; the first round seat is of a cavity structure and communicates with the first rotating shaft, one end of the first round seat is rotationally connected with a pull ring, a second round seat is fixed to one end of the second rotating shaft, and a plurality of U-shaped frames are rotationally connected to the side walls of the two ends of the water tank at equal intervals in a circular mode. The natural gas pipeline cleaning device can clean natural gas pipelines with different diameters, in the cleaning process, a cleaning solvent is injected into the first circular base through the water supply mechanism in cooperation with the first rotating shaft, the cleaning solvent is evenly sprayed to the inner wall of the natural gas pipeline through the multiple spray heads, impurities and dirt on the inner wall of the natural gas pipeline are dissolved, and cleaning efficiency is improved. Stubborn sediments and dirt can be removed, and the pipeline cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, in particular to a spiral propulsion pig for natural gas pipelines. Background Art

[0002] Natural gas pipelines are pipeline systems used to transport natural gas, usually made of steel or plastic materials. They play an important role in the production, transportation and distribution of natural gas. During the use of natural gas pipelines, impurities, sediments or moisture may accumulate inside due to various factors. These substances not only reduce the circulation efficiency of the pipelines, but may also cause corrosion to the pipelines, thereby affecting their service life and safety. Therefore, a spiral propulsion pipe cleaning device for natural gas pipelines is needed.

[0003] During use, traditional spiral-propelled pipe pigs for natural gas pipelines are usually designed for pipes of a specific diameter and may not be able to effectively adapt to pipes of different diameters. When the diameter of the pipeline exceeds the design range of the pipe pig, the pipe pig may not be able to pass smoothly, and it is necessary to replace the spiral-propelled pipe pigs for natural gas pipelines of different specifications, which increases the cleaning cost and reduces the practicality of the device. Traditional spiral-propelled pipe pigs lack a dedicated cleaning mechanism and can only rely on their own propulsion force for cleaning. This design limits their ability to remove stubborn sediment, dirt or other impurities, reducing the cleaning effect. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a spiral propulsion pig for a natural gas pipeline.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A spiral propulsion pipe cleaner for a natural gas pipeline comprises a water tank, wherein the middle parts of both ends of the water tank are rotatably connected with a first rotating shaft and a second rotating shaft respectively, the side walls of the first rotating shaft and the second rotating shaft are both sleeved with circular plates, the first rotating shaft is a cavity structure, a first circular seat is fixed at one end of the first rotating shaft, and the first circular seat is a cavity structure, and the first circular seat and the first rotating shaft are connected, a pull ring is rotatably connected at one end of the first circular seat, and a second circular seat is fixed at one end of the second rotating shaft, a plurality of U-shaped frames are rotatably connected to the side walls of both ends of the water tank at equal distances, the bottoms of the side walls at both ends of the plurality of U-shaped frames are rotatably connected to rollers, the surfaces of the two circular plates are provided with a plurality of first adjustment mechanisms for adjusting the plurality of U-shaped frames respectively, a plurality of rubber scrapers are equidistantly provided on the side walls of the first circular seat, and the side walls of the first circular seat are provided with Multiple second adjustment mechanisms are provided for separately adjusting multiple rubber scrapers, multiple brushes are arranged in a circular shape at equal distances on the side walls of the second circular seat, multiple third adjustment mechanisms are provided on the side walls of the second circular seat for separately adjusting the multiple brushes, a rotating mechanism for rotating the first rotating shaft and the second rotating shaft is provided inside the water tank, multiple nozzles are arranged in a circular shape at equal distances on the side walls of the first circular seat, and a water supply mechanism for supplying water to the first circular seat is provided inside the water tank. During use, this device can clean natural gas pipelines of different diameters. During the cleaning process, a cleaning solvent is injected into the first circular seat through the water supply mechanism in conjunction with the first rotating shaft, and is evenly sprayed on the inner wall of the natural gas pipeline through multiple nozzles to dissolve impurities and dirt on the inner wall of the natural gas pipeline, thereby removing stubborn deposits and dirt and improving the pipeline cleaning effect.

[0007] As a further solution of the present invention, the first adjusting mechanism includes a U-shaped plate, wherein the U-shaped plate is fixed to the top of the circular plate, and the inner side wall of the circular plate is rotatably connected to the first sleeve, and the first slider is slidably connected inside the first sleeve, and a first sleeve rod is fixed to the top of the first slider, and one end of the first sleeve rod passes through the top of the first sleeve, and a connecting rod is fixed to the inner side wall of the U-shaped frame, and one end of the first sleeve rod is rotatably connected to the connecting rod, a first spring is provided at the bottom of the first sleeve, and the two ends of the first spring are respectively fixed to the first sleeve and the first slider. When this device enters the pipeline, multiple U-shaped frames rotate, and cooperate with multiple connecting rods and the first sleeve rod to drive multiple first sliders to move downward along the inner walls of multiple first sleeves, so that the multiple first springs are all in a compressed state. Under the reaction of the multiple compressed first springs, the multiple first sliders and the multiple first sleeve rods all have a tendency to move in the opposite direction, thereby making the multiple rollers fit tightly against the inner wall of the natural gas pipeline.

[0008] As a further solution of the present invention, the second adjusting mechanism includes a second sleeve, which is fixed on the outer wall of the first circular seat, and the inner wall of the second sleeve is slidably connected to the second slider, a second rod is fixed on the top of the second slider, and one end of the second rod passes through the top of the second sleeve, and one end of the second rod is fixed to the rubber scraper, a second spring is provided at the bottom inner side of the second sleeve, and the two ends of the second spring are respectively fixed to the second sleeve and the second slider, multiple second rods and multiple second sliders move downward along the inner walls of multiple second sleeves respectively, so that the multiple second springs are all in a compressed state, and under the reaction of the multiple compressed second springs, the multiple second sliders and multiple second rods have a tendency to move in the opposite direction, so that the multiple rubber scrapers are tightly fitted to the inner wall of the natural gas pipeline.

[0009] As a further solution of the present invention, the third adjusting mechanism includes a third sleeve, which is fixed on the outer wall of the second circular seat, and the inner wall of the third sleeve is slidably connected to a third slider, a third rod is fixed to the top of the third slider, and one end of the third rod passes through the top of the third sleeve, and one end of the third rod is fixed to the brush, a third spring is provided at the bottom inner of the third sleeve, and the two ends of the third spring are respectively fixed to the third sleeve and the third slider, multiple third sliders and multiple third rods move downward along the inner walls of multiple third sleeves respectively, so that the multiple third springs are all in a compressed state, and under the reaction of the multiple compressed third springs, the multiple third sliders and multiple third rods have a tendency to move in the opposite direction, so that the multiple brushes are tightly fitted to the inner wall of the natural gas pipeline.

[0010] As a further solution of the present invention, the rotating mechanism includes a connecting plate, which is fixed on the inner wall of the water tank, and a protective box is provided on the top of the connecting plate, and a dual-axis motor is fixed inside the protective box. The side walls at both ends of the protective box are rotatably connected to the third rotating shaft, and the two ends of the third rotating shaft respectively pass through the side walls at both ends of the water tank, and the two output shafts of the dual-axis motor are respectively fixed to the two third rotating shafts, and the two side walls of the two third rotating shafts are respectively sleeved with a third gear, and the side walls of the first rotating shaft and the second rotating shaft are respectively sleeved with the first gear and the second gear, and the two third gears are respectively meshed with the first gear and the second gear, driving the dual-axis motor to drive the two third rotating shafts to rotate, and then drive the two third gears to rotate, and cooperate with the first gear and the second gear to drive the first rotating shaft and the second rotating shaft to rotate at the same time, the rotation of the first rotating shaft and the second rotating shaft drives the first circular seat and the second circular seat to rotate, and then drives multiple rubber scrapers and multiple brushes to rotate, which can clean natural gas pipelines of different diameters.

[0011] As a further solution of the present invention, the water delivery mechanism includes a water pump, which is fixed on the inner wall of the water tank. The other end of the first rotating shaft is rotatably connected to a rotary joint. A hose is fixed to the water outlet of the water pump, and one end of the hose is rotatably connected to the rotary joint. The water pump is driven to draw the cleaning solvent into the interior of the first circular seat through the hose and the first rotating shaft, and spray it evenly on the inner wall of the natural gas pipeline through multiple nozzles, so as to dissolve impurities and dirt on the inner wall of the natural gas pipeline, remove stubborn deposits and dirt, and improve the pipeline cleaning effect.

[0012] The beneficial effects of the utility model are:

[0013] 1. During use, the device adjusts the angles between the multiple U-shaped frames and the water tank through multiple first adjustment mechanisms, adjusts the multiple rubber scrapers through multiple second adjustment mechanisms, and makes the multiple rubber scrapers and the natural gas pipeline fit tightly. The multiple brushes are adjusted through multiple third adjustment mechanisms, and make the multiple brushes and the natural gas pipeline fit tightly. The rotating mechanism drives the first circular seat and the second circular seat to rotate, and then drives the multiple rubber scrapers and brushes to rotate. Natural gas pipelines of different diameters can be cleaned without replacing equipment, reducing cleaning costs and improving the practicality of the device.

[0014] 2. During cleaning, a large amount of cleaning solvent is poured into the water tank, and the cleaning solvent is injected into the first circular seat through the water supply mechanism in conjunction with the first rotating shaft, and is evenly sprayed on the inner wall of the natural gas pipeline through multiple nozzles to dissolve impurities and dirt on the inner wall of the natural gas pipeline, thereby removing stubborn sediments and dirt and improving the pipeline cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a spiral-propelled pig for a natural gas pipeline proposed by the present invention;

[0016] Figure 2 This is a schematic diagram of a U-shaped frame, roller, U-shaped plate, first sleeve and connecting rod of a spiral propulsion pig for a natural gas pipeline proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of a circular plate, a second rotating shaft and a second gear of a spiral-propelled pig for a natural gas pipeline proposed by the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of a first sleeve of a spiral-propelled pig for a natural gas pipeline proposed in the present invention;

[0019] Figure 5 This is a schematic cross-sectional view of a water tank of a spiral-propelled pig for a natural gas pipeline proposed in the present invention;

[0020] Figure 6 for Figure 5 A magnified schematic diagram;

[0021] Figure 7 This is a cross-sectional diagram of the second sleeve of a spiral propulsion pig for a natural gas pipeline proposed in this utility model.

[0022] Figure 8 This is a schematic cross-sectional view of the third sleeve of a spiral-propelled pig for a natural gas pipeline proposed in the utility model.

[0023] In the figure: 1. water tank; 2. circular plate; 3. first circular seat; 4. third gear; 5. second circular seat; 6. pull ring; 7. first rotating shaft; 8. second rotating shaft; 9. U-shaped frame; 10. roller; 11. U-shaped plate; 12. first sleeve; 13. connecting rod; 14. first gear; 15. second gear; 16. first slider; 17. first set of rods; 18. first spring; 19. water pump; 20. hose; 21. rotary joint; 22. connecting plate; 23. protective box; 24. dual-axis motor; 25. third rotating shaft; 26. second sleeve; 27. second slider; 28. second set of rods; 29. ​​rubber scraper; 30. second spring; 31. third sleeve; 32. third slider; 33. third set of rods; 34. third spring; 35. brush; 36. nozzle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figures 1-8, a spiral propulsion pipe cleaner for a natural gas pipeline, comprising a water tank 1, wherein the middle portions of both ends of the water tank 1 are rotatably connected to a first rotating shaft 7 and a second rotating shaft 8, and the side walls of the first rotating shaft 7 and the second rotating shaft 8 are sleeved with a circular plate 2, the first rotating shaft 7 is a cavity structure, one end of the first rotating shaft 7 is fixed with a first circular seat 3, and the first circular seat 3 is a cavity structure, and the first circular seat 3 is connected to the first rotating shaft 7, one end of the first circular seat 3 is rotatably connected to a pull ring 6, and one end of the second rotating shaft 8 is fixed to a second circular seat 5, the side walls of both ends of the water tank 1 are equidistantly connected to a plurality of U-shaped frames 9 in a circular manner, and the bottom of the side walls of both ends of the plurality of U-shaped frames 9 are rotatably connected to rollers 10, the surfaces of the two circular plates 2 are provided with a plurality of first adjustment mechanisms for adjusting the plurality of U-shaped frames 9 respectively, the side walls of the first circular seat 3 are equidistantly provided with a plurality of rubber scrapers 29, and the side walls of the first circular seat 3 are provided with a plurality of A second adjustment mechanism is provided for separately adjusting multiple rubber scrapers 29, multiple brushes 35 are arranged in a circular shape at equal distances on the side walls of the second circular seat 5, and multiple third adjustment mechanisms are provided on the side walls of the second circular seat 5 for separately adjusting the multiple brushes 35. A rotating mechanism for rotating the first rotating shaft 7 and the second rotating shaft 8 is provided inside the water tank 1, and multiple nozzles 36 are arranged in a circular shape at equal distances on the side walls of the first circular seat 3. A water supply mechanism for supplying water to the first circular seat 3 is provided inside the water tank 1. During use, this device can clean natural gas pipelines of different diameters. During the cleaning process, the cleaning solvent is injected into the first circular seat 3 through the water supply mechanism in cooperation with the first rotating shaft 7, and is evenly sprayed on the inner wall of the natural gas pipeline through multiple nozzles 36 to dissolve impurities and dirt on the inner wall of the natural gas pipeline, thereby removing stubborn deposits and dirt and improving the pipeline cleaning effect.

[0026] Reference Figures 1-4 In a preferred embodiment, the first adjustment mechanism includes a U-shaped plate 11, the U-shaped plate 11 is fixed to the top of the circular plate 2, the inner wall of the circular plate 2 is rotatably connected to the first sleeve 12, the first sleeve 12 is slidably connected to the first slider 16, the top of the first slider 16 is fixed with a first sleeve rod 17, and one end of the first sleeve rod 17 passes through the top of the first sleeve 12, the inner wall of the U-shaped frame 9 is fixed with a connecting rod 13, and one end of the first sleeve rod 17 is rotatably connected to the connecting rod 13, and a first spring 18 is provided at the bottom of the first sleeve 12, and the first spring The two ends of 18 are respectively fixed to the first sleeve 12 and the first slider 16. When the device enters the pipeline, the multiple U-shaped frames 9 rotate, and cooperate with the multiple connecting rods 13 and the first sleeve rods 17 to drive the multiple first sliders 16 to move downward along the inner walls of the multiple first sleeves 12, so that the multiple first springs 18 are all in a compressed state. Under the reaction of the multiple compressed first springs 18, the multiple first sliders 16 and the multiple first sleeve rods 17 have a tendency to move in the opposite direction, thereby making the multiple rollers 10 fit tightly against the inner wall of the natural gas pipeline.

[0027] Reference Figure 1 and Figure 7 In a preferred embodiment, the second adjusting mechanism includes a second sleeve 26, which is fixed to the outer wall of the first circular seat 3, and a second slider 27 is slidably connected to the inner wall of the second sleeve 26. A second rod 28 is fixed to the top of the second slider 27, and one end of the second rod 28 passes through the top of the second sleeve 26, and one end of the second rod 28 is fixed to the rubber scraper 29. A second spring 30 is provided at the bottom of the second sleeve 26, and the two ends of the second spring 30 are respectively fixed to the second sleeve 26 and the second slider 27. Multiple second rods 28 and multiple second sliders 27 move downward along the inner walls of multiple second sleeves 26, so that the multiple second springs 30 are all in a compressed state. Under the reaction of the multiple compressed second springs 30, the multiple second sliders 27 and the multiple second rods 28 have a tendency to move in the opposite direction, thereby making the multiple rubber scrapers 29 fit tightly against the inner wall of the natural gas pipeline.

[0028] Reference Figure 1 and Figure 8 The third adjusting mechanism includes a third sleeve 31, which is fixed to the outer wall of the second circular seat 5, and the inner wall of the third sleeve 31 is slidably connected to the third slider 32, and a third sleeve rod 33 is fixed to the top of the third slider 32, and one end of the third sleeve rod 33 passes through the top of the third sleeve 31, and one end of the third sleeve rod 33 is fixed to the brush 35. A third spring 34 is provided at the bottom of the third sleeve 31, and the two ends of the third spring 34 are respectively fixed to the third sleeve 31 and the third slider 32. The multiple third sliders 32 and the multiple third sleeve rods 33 move downward along the inner walls of the multiple third sleeves 31, so that the multiple third springs 34 are all in a compressed state. Under the reaction of the multiple compressed third springs 34, the multiple third sliders 32 and the multiple third sleeve rods 33 have a tendency to move in the opposite direction, thereby making the multiple brushes 35 fit tightly against the inner wall of the natural gas pipeline.

[0029] Reference Figure 5 and Figure 6In a preferred embodiment, the rotating mechanism includes a connecting plate 22, the connecting plate 22 is fixed to the inner wall of the water tank 1, a protective box 23 is provided on the top of the connecting plate 22, a dual-axis motor 24 is fixed inside the protective box 23, and the side walls at both ends of the protective box 23 are rotatably connected to the third rotating shaft 25, and the two ends of the third rotating shaft 25 respectively penetrate the side walls at both ends of the water tank 1, the two output shafts of the dual-axis motor 24 are respectively fixed to the two third rotating shafts 25, and the side walls of the two third rotating shafts 25 are sleeved with the third gear 4, and the side walls of the first rotating shaft 7 and the second rotating shaft 8 are respectively The first gear 14 and the second gear 15 are sleeved, and the two third gears 4 are respectively engaged with the first gear 14 and the second gear 15, driving the dual-axis motor 24 to drive the two third rotating shafts 25 to rotate, and then drive the two third gears 4 to rotate, and cooperate with the first gear 14 and the second gear 15 to drive the first rotating shaft 7 and the second rotating shaft 8 to rotate at the same time. The rotation of the first rotating shaft 7 and the second rotating shaft 8 drives the first circular seat 3 and the second circular seat 5 to rotate, and then drives multiple rubber scrapers 29 and multiple brushes 35 to rotate, which can clean natural gas pipelines of different diameters.

[0030] Reference Figure 1 and Figure 5 In a preferred embodiment, the water delivery mechanism includes a water pump 19, which is fixed to the inner wall of the water tank 1. The other end of the first rotating shaft 7 is rotatably connected to a rotary joint 21. A hose 20 is fixed to the water outlet of the water pump 19, and one end of the hose 20 is rotatably connected to the rotary joint 21. The water pump 19 is driven to draw the cleaning solvent into the first circular seat 3 through the hose 20 and the first rotating shaft 7, and spray it evenly on the inner wall of the natural gas pipeline through multiple nozzles 36, so as to dissolve impurities and dirt on the inner wall of the natural gas pipeline, remove stubborn deposits and dirt, and improve the pipeline cleaning effect.

[0031] The working principle of this embodiment is as follows: during use, the device is connected to the pull ring 6 through an external traction mechanism to pull the device to move in the natural gas pipeline. When cleaning, a large amount of cleaning solvent is pre-injected into the water tank 1. When the device enters the pipeline, the multiple U-shaped frames 9 rotate, and cooperate with the multiple connecting rods 13 and the first set rods 17 to drive the multiple first sliders 16 to move downward along the inner walls of the multiple first sleeves 12, so that the multiple first springs 18 are all in a compressed state. Under the reaction of the multiple compressed first springs 18, the multiple first sliders 16 and the multiple first sets The rods 17 all have a tendency to move in the opposite direction, thereby making the multiple rollers 10 closely fit with the inner wall of the natural gas pipeline. At the same time, the multiple second rods 28 and the multiple second sliders 27 move downward along the inner wall of the multiple second sleeves 26 respectively, making the multiple second springs 30 all compressed. Under the reaction of the multiple compressed second springs 30, the multiple second sliders 27 and the multiple second rods 28 all have a tendency to move in the opposite direction, thereby making the multiple rubber scrapers 29 closely fit with the inner wall of the natural gas pipeline. The multiple third sliders 32 and the multiple third rods 33 are respectively compressed. The plurality of third sleeves 31 are moved downward along the inner wall of the plurality of third sleeves 31, so that the plurality of third springs 34 are all in a compressed state. Under the reaction of the plurality of compressed third springs 34, the plurality of third sliders 32 and the plurality of third sleeve rods 33 have a tendency to move in the opposite direction, thereby making the plurality of brushes 35 closely fit the inner wall of the natural gas pipeline, and turning on the power switch of the dual-axis motor 24, driving the dual-axis motor 24 to drive the two third rotating shafts 25 to rotate, thereby driving the two third gears 4 to rotate, and cooperating with the first gear 14 and the second gear 15 to drive the first rotating shaft 7 and the second rotating shaft 8 to rotate simultaneously. The first rotating shaft 7 and the second rotating shaft 8 rotate to drive the first circular seat 3 and the second circular seat 5 to rotate, and then drive the multiple rubber scrapers 29 and the multiple brushes 35 to rotate, so as to clean the natural gas pipelines with different diameters. During the cleaning process, the power switch of the water pump 19 is turned on, and the water pump 19 is driven to draw the cleaning solvent into the first circular seat 3 through the hose 20 and the first rotating shaft 7, and spray it evenly on the inner wall of the natural gas pipeline through the multiple nozzles 36, so as to dissolve the impurities and dirt on the inner wall of the natural gas pipeline, remove stubborn sediments and dirt, and improve the pipeline cleaning effect.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A spiral propulsion pig for a natural gas pipeline, comprising a water tank (1), characterized in that: The middle of both ends of the water tank (1) are respectively connected to a first rotating shaft (7) and a second rotating shaft (8) in rotation. The side walls of the first rotating shaft (7) and the second rotating shaft (8) are both sleeved with a circular plate (2). The first rotating shaft (7) is a cavity structure. A first circular seat (3) is fixed at one end of the first rotating shaft (7). The first circular seat (3) is a cavity structure. The first circular seat (3) and the first rotating shaft (7) are connected. A pull ring (6) is connected to one end of the first circular seat (3). A second circular seat (5) is fixed to one end of the second rotating shaft (8). The side walls of both ends of the water tank (1) are equidistantly connected to a plurality of U-shaped frames (9) in a circular rotation. The bottoms of the side walls of both ends of the plurality of U-shaped frames (9) are both connected to rollers (10) in rotation. The surfaces of the two circular plates (2) are provided with a plurality of A first adjustment mechanism is provided for adjusting a plurality of U-shaped frames (9) respectively; a plurality of rubber scrapers (29) are provided on the side wall of the first circular seat (3) at equal intervals in a circular shape; a plurality of second adjustment mechanisms are provided on the side wall of the first circular seat (3) for adjusting the plurality of rubber scrapers (29) respectively; a plurality of brushes (35) are provided on the side wall of the second circular seat (5) at equal intervals in a circular shape; a plurality of third adjustment mechanisms are provided on the side wall of the second circular seat (5) for adjusting the plurality of brushes (35) respectively; a rotating mechanism for rotating a first rotating shaft (7) and a second rotating shaft (8) is provided inside the water tank (1); a plurality of nozzles (36) are provided on the side wall of the first circular seat (3) at equal intervals in a circular shape; and a water supply mechanism for supplying water to the first circular seat (3) is provided inside the water tank (1).

2. The spiral propulsion pig for natural gas pipeline according to claim 1, characterized in that: The first adjustment mechanism comprises a U-shaped plate (11), wherein the U-shaped plate (11) is fixed to the top of the circular plate (2), the inner side wall of the circular plate (2) is rotatably connected to a first sleeve (12), the first sleeve (12) is slidably connected to a first slider (16), a first sleeve rod (17) is fixed to the top of the first slider (16), and one end of the first sleeve rod (17) passes through the top of the first sleeve (12), a connecting rod (13) is fixed to the inner side wall of the U-shaped frame (9), and one end of the first sleeve rod (17) is rotatably connected to the connecting rod (13), a first spring (18) is provided at the inner bottom of the first sleeve (12), and the two ends of the first spring (18) are respectively fixed to the first sleeve (12) and the first slider (16).

3. The spiral propulsion pig for a natural gas pipeline according to claim 1, characterized in that: The second adjustment mechanism includes a second sleeve (26), the second sleeve (26) is fixed on the outer wall of the first circular seat (3), the inner wall of the second sleeve (26) is slidably connected to the second slider (27), a second sleeve rod (28) is fixed on the top of the second slider (27), and one end of the second sleeve rod (28) passes through the top of the second sleeve (26), and one end of the second sleeve rod (28) is fixed to the rubber scraper (29), a second spring (30) is provided at the bottom of the second sleeve (26), and the two ends of the second spring (30) are respectively fixed to the second sleeve (26) and the second slider (27).

4. The spiral propulsion pig for a natural gas pipeline according to claim 1, characterized in that: The third adjustment mechanism comprises a third sleeve (31), the third sleeve (31) is fixed on the outer wall of the second circular seat (5), the inner wall of the third sleeve (31) is slidably connected to a third slider (32), a third sleeve rod (33) is fixed to the top of the third slider (32), and one end of the third sleeve rod (33) passes through the top of the third sleeve (31), and one end of the third sleeve rod (33) is fixed to the brush (35), a third spring (34) is provided at the inner bottom of the third sleeve (31), and two ends of the third spring (34) are respectively fixed to the third sleeve (31) and the third slider (32).

5. The spiral propulsion pig for natural gas pipeline according to claim 1, characterized in that: The rotating mechanism comprises a connecting plate (22), the connecting plate (22) being fixed on the inner wall of the water tank (1), a protective box (23) being provided on the top of the connecting plate (22), a double-shaft motor (24) being fixed inside the protective box (23), the side walls at both ends of the protective box (23) being rotatably connected to a third rotating shaft (25), and the two ends of the third rotating shaft (25) respectively pass through the side walls at both ends of the water tank (1), the two output shafts of the double-shaft motor (24) being fixed to the two third rotating shafts (25), the side walls of the two third rotating shafts (25) being sleeved with a third gear (4), the side walls of the first rotating shaft (7) and the second rotating shaft (8) being sleeved with a first gear (14) and a second gear (15), and the two third gears (4) being meshed with the first gear (14) and the second gear (15), respectively.

6. The spiral propulsion pig for a natural gas pipeline according to claim 1, characterized in that: The water supply mechanism comprises a water pump (19), the water pump (19) being fixed on the inner wall of the water tank (1), the other end of the first rotating shaft (7) being rotatably connected to a rotary joint (21), a hose (20) being fixed to the water outlet of the water pump (19), and one end of the hose (20) being rotatably connected to the rotary joint (21).

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