Natural gas long-distance pipeline accumulated liquid discharging device

Abstract

The utility model belongs to the technical field of natural gas connecting pipelines, and discloses a natural gas long-distance pipeline accumulated liquid discharging device which comprises a natural gas pipeline, a collecting box and an extruding mechanism, and a liquid discharging opening is formed in the bottom of the natural gas pipeline. The collecting box is communicated with the liquid discharging opening, a liquid discharging channel is arranged at the bottom of the collecting box, and accumulated liquid in the natural gas pipeline enters the collecting box through the liquid discharging opening; the extrusion mechanism comprises a driving assembly and an extrusion plate, the extrusion plate is movably arranged in the collecting box in the vertical direction, and the output end of the driving assembly is in transmission connection with the extrusion plate and used for driving the extrusion plate to reciprocate in the collecting box in the vertical direction, so that pressure is applied to the accumulated liquid in the collecting box, and the accumulated liquid is forced to flow out through the liquid discharging channel; accumulated liquid can be effectively discharged in an extrusion mode, accumulated liquid residues are avoided, when the pressure difference does not reach a discharge critical value, the accumulated liquid can be timely and effectively discharged, corrosion to a pipeline caused by long-term retention of the accumulated liquid is avoided, the leakage risk of the pipeline is reduced, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of natural gas connection pipeline technology, and in particular to a device for draining accumulated liquid in a long-distance natural gas pipeline. Background Technology

[0002] After a period of operation, natural gas pipelines will gradually accumulate liquid in low-lying areas due to the small amount of liquid hydrocarbons and free water carried by the natural gas itself. This liquid can easily corrode the pipeline. For example, in a liquid environment containing hydrogen sulfide, the pipeline will experience sulfide stress corrosion cracking. Furthermore, the presence of liquid occupies pipeline space and affects the efficiency of natural gas transportation.

[0003] Existing liquid drainage systems rely on the pressure difference between natural gas and ambient air to discharge accumulated liquid. However, if the pressure difference doesn't reach the discharge threshold, the liquid cannot be discharged and remains inside the pipeline. This prolonged immersion in corrosive liquid causes the moisture and acidic components to corrode the pipeline's inner walls, shortening its lifespan. Generally, severe corrosion can reduce the pipeline wall thickness by 0.5–1 mm per year, significantly increasing the risk of pipeline leaks.

[0004] Therefore, there is an urgent need to propose a liquid discharge device for long-distance natural gas pipelines to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a liquid discharge device for long-distance natural gas pipelines, which can effectively and promptly discharge the liquid accumulated in the natural gas pipelines, prevent the liquid from stagnating for a long time and causing corrosion to the pipelines, reduce the risk of pipeline leakage, and extend the service life of the pipelines.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A liquid discharge device for long-distance natural gas pipelines includes:

[0008] A natural gas pipeline, wherein a drain outlet is provided at the bottom of the natural gas pipeline;

[0009] A collection box, which is connected to the drain outlet, and the bottom of the collection box is provided with a drain channel;

[0010] The extrusion mechanism includes a drive assembly and an extrusion plate. The extrusion plate is movably disposed in the collection box in a vertical direction. The output end of the drive assembly is connected to the extrusion plate in a transmission manner, and is used to drive the extrusion plate to reciprocate in the vertical direction within the collection box.

[0011] Furthermore, the extrusion plate is slidably connected to the inner wall of the collection box.

[0012] Furthermore, the extrusion plate has multiple through holes.

[0013] Furthermore, the driving assembly includes a driving component, an eccentric wheel, a transmission component, and a follower component. The output end of the driving component is connected to the eccentric wheel to drive the eccentric wheel to rotate. The first end of the transmission component is rotatably connected to the eccentric wheel, and its rotation connection point is offset from the rotation center of the eccentric wheel. One end of the follower component is rotatably connected to the second end of the transmission component, and the other end is fixedly connected to the extrusion plate.

[0014] Furthermore, the drive assembly also includes a seal, a sealing hole is provided on the collection box, the follower passes through the sealing hole and is fixedly connected to the extrusion plate, the seal is sleeved on the follower, and the seal is in a sealing fit with the inner wall of the sealing hole; and / or,

[0015] The extrusion mechanism also includes a guide post, which is vertically disposed inside the collection box, and the extrusion plate has a guide hole that slides with the guide post.

[0016] Furthermore, the natural gas long-distance pipeline liquid discharge device also includes a connecting assembly, which includes a connecting pipe and a protective shell. One end of the connecting pipe is sealed and connected to the drain port, and the other end is connected to the collection box. The protective shell is installed outside the connecting pipe, and the upper end of the protective shell is sealed and connected to the outer wall of the natural gas pipeline, and the lower end is sealed and connected to the collection box.

[0017] Furthermore, the natural gas long-distance pipeline liquid discharge device also includes an anti-clogging impeller, which includes a rotating shaft and a baffle. The rotating shaft is rotatably disposed inside the connecting pipe, and the baffle is disposed circumferentially on the rotating shaft. The baffle can drive the anti-clogging impeller to rotate under the impact of the liquid.

[0018] Furthermore, there are at least two anti-clogging impellers, and the shafts of the at least two anti-clogging impellers are parallel and spaced apart in the vertical direction, and the shafts extend in the horizontal direction.

[0019] Furthermore, the natural gas long-distance pipeline liquid discharge device also includes a cleaning component, which includes a cleaning brush. The cleaning brush is movably disposed within the natural gas pipeline along the axial direction of the natural gas pipeline. The cleaning brush includes an annular base and bristles disposed on the outer periphery of the annular base, and the bristles abut against the inner wall of the natural gas pipeline.

[0020] Furthermore, the cleaning assembly also includes a limiting ring and a guide rod. The limiting ring is provided at both ends of the natural gas pipeline, and the guide rod is arranged along the axis of the natural gas pipeline. Both ends of the guide rod are connected to the limiting ring, and the annular base is slidably connected to the guide rod.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a device for draining stagnant liquid from a long-distance natural gas pipeline. The device collects stagnant liquid within the pipeline through a collection box. The collection box contains a squeezing mechanism, which includes a drive assembly and a squeezing plate. The output end of the drive assembly is connected to the squeezing plate, enabling the squeezing plate to reciprocate vertically within the collection box. This pressure forces the liquid out through a drain channel at the bottom of the collection box. The squeezing method ensures more thorough drainage, preventing liquid residue from remaining in the collection box. This overcomes the limitations of existing technologies that rely on the pressure difference between natural gas and the external environment to drain stagnant liquid. Even when the pressure difference does not reach the discharge threshold, the device can effectively and promptly drain the liquid, preventing long-term stagnant liquid from corroding the pipeline, reducing the risk of pipeline leakage, and extending the pipeline's service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the natural gas long-distance pipeline liquid discharge device of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the liquid discharge device for long-distance natural gas pipelines according to this utility model;

[0025] Figure 3 This is a structural schematic diagram of the extrusion mechanism and connecting components of this utility model;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0027] In the picture:

[0028] 1. Natural gas pipeline;

[0029] 2. Collection box;

[0030] 3. Drainage channel;

[0031] 4. Extrusion mechanism; 41. Drive assembly; 411. Drive component; 412. Eccentric wheel; 413. Transmission component; 414. Follower component; 415. Seal component; 416. Support frame; 42. Extrusion plate; 421. Through hole; 43. Guide post;

[0032] 5. Connecting components; 51. Connecting pipe; 52. Protective housing;

[0033] 6. Anti-clogging impeller; 61. Shaft; 62. Baffle;

[0034] 7. Cleaning components; 71. Cleaning brush; 711. Annular base; 712. Brush bristles; 72. Limiting ring; 73. Guide rod;

[0035] 8. Mounting rod; 9. Connecting rod. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figures 1-4As shown, this embodiment provides a natural gas long-distance pipeline liquid discharge device, including a natural gas pipeline 1, a collection box 2, and a squeezing mechanism 4. The natural gas pipeline 1 has a drain port at its bottom; the collection box 2 is connected to the drain port, and the bottom of the collection box 2 is provided with a drain channel 3; the squeezing mechanism 4 includes a drive assembly 41 and a squeezing plate 42. The squeezing plate 42 is movably disposed in the collection box 2 in the vertical direction. The output end of the drive assembly 41 is connected to the squeezing plate 42 for driving the squeezing plate 42 to reciprocate in the vertical direction within the collection box 2.

[0041] Liquid accumulated in natural gas pipeline 1 enters collection tank 2 through the drain port. Driven by drive assembly 41, squeeze plate 42 moves vertically back and forth within collection tank 2, applying pressure to the liquid and forcing it to flow out through drain channel 3. This squeezing method ensures more thorough drainage, preventing liquid residue from remaining in collection tank 2. This design overcomes the limitations of existing technologies that rely on the pressure difference between natural gas and the external environment to drain liquid. Even when the pressure difference does not reach the discharge threshold, liquid can be drained promptly and effectively, preventing long-term liquid retention from corroding the pipeline, reducing the risk of pipeline leakage, and extending pipeline service life.

[0042] Among them, the natural gas pipeline 1 is usually made of high-strength, corrosion-resistant steel, such as X70 and X80 series pipeline steel. These steels are rolled using special processes and have excellent toughness, compressive strength and fatigue resistance, which can withstand the complex and varied geological conditions along the pipeline. The collection box 2 is usually made of corrosion-resistant metal plates, such as stainless steel plates, to resist the erosion of acidic, alkaline and other corrosive components in the accumulated liquid and extend its service life. The extruded plate 42 is usually made of oil-resistant and corrosion-resistant rubber or polyurethane materials, and the surface is specially treated, such as vulcanization and coating, to enhance its wear resistance and sealing performance to adapt to the complex composition of the accumulated liquid.

[0043] like Figure 2 and Figure 3 As shown, the squeezing plate 42 is further slidably connected to the inner wall of the collection box 2, which can improve the fit between the squeezing plate 42 and the collection box 2, which is conducive to more thoroughly draining the accumulated liquid in the collection box 2 and significantly improving the liquid discharge efficiency.

[0044] When the squeezing plate 42 and the collection box 2 cooperate well, the movement of the squeezing plate 42 can easily create reverse pressure in the natural gas pipeline 1, causing the accumulated liquid to backflow into the natural gas pipeline 1. In order to solve the above problem, multiple through holes 421 are provided on the squeezing plate 42 to balance the pressure on both sides of the squeezing plate 42, ensuring that the accumulated liquid enters the collection box 2 in one direction and is discharged smoothly.

[0045] like Figure 3As shown, the drive assembly 41 includes a drive member 411, an eccentric wheel 412, a transmission member 413, and a follower member 414. The output end of the drive member 411 is connected to the eccentric wheel 412 to drive the eccentric wheel 412 to rotate. The first end of the transmission member 413 is rotatably connected to the eccentric wheel 412, and its rotation connection point is offset from the rotation center of the eccentric wheel 412. One end of the follower member 414 is rotatably connected to the second end of the transmission member 413, and the other end is fixedly connected to the extrusion plate 42. When the drive member 411 drives the eccentric wheel 412 to rotate, the eccentric wheel 412 drives the follower member 414 to move up and down through the transmission member, thereby driving the extrusion plate 42 to move stably back and forth in the vertical direction.

[0046] This transmission method can efficiently and stably transmit the power of the drive component 411 to the extrusion plate 42, ensuring that the extrusion plate 42 maintains regular and continuous movement during the discharge of accumulated liquid, and avoiding poor discharge of accumulated liquid due to unstable power transmission. At the same time, the eccentric wheel 412 can adjust the rotation radius according to actual needs, flexibly control the movement stroke and speed of the extrusion plate 42, and adapt to the discharge requirements under different working conditions. In addition, the drive component 41 has a simple and compact structure, which reduces the space occupied by the drive component 41 itself in the vertical direction, meets the installation requirements of narrow spaces, and broadens the application scenarios of the liquid discharge device in the long-distance natural gas pipeline system.

[0047] In this embodiment, the drive assembly 41 also includes a support frame 416, which is used to support the drive component 411. The support frame 416 is usually made of high-strength metal material, such as high-quality carbon steel, and is made through precision forging and processing to ensure that it has sufficient rigidity and stability to resist the impact of various forces during operation.

[0048] The drive unit 411 uses an explosion-proof asynchronous motor, which has excellent explosion-proof performance and can effectively prevent electric sparks from being generated in dangerous situations such as natural gas leaks, thus preventing explosions and ensuring the safety of the pipeline. Optionally, the drive unit 411 may include, but is not limited to, a pneumatic motor or a hydraulic motor, which is not limited here.

[0049] Furthermore, the drive assembly 41 also includes a seal 415. A sealing hole is provided on the collection tank 2. The drive component 411, eccentric wheel 412, and transmission component 413 are all installed outside the collection tank 2 to avoid corrosion by the liquid accumulated inside the collection tank 2. The follower 414 passes through the sealing hole and is fixedly connected to the extrusion plate 42. The seal 415 is sleeved on the follower 414. The seal 415 is sealed and fitted with the inner wall of the sealing hole. When the follower 414 moves up and down, the seal 415 slides and seals with the sealing hole, which can effectively prevent natural gas leakage.

[0050] Among them, the seal 415 is made of nitrile rubber or fluororubber, which is not limited here.

[0051] Optionally, the squeezing mechanism 4 also includes a guide post 43, which is vertically disposed in the collection box 2. The squeezing plate 42 is provided with a guide hole that slides with the guide post 43. The sliding fit between the guide post 43 and the guide hole can accurately guide the movement of the squeezing plate 42, ensuring that the squeezing plate 42 remains stable during frequent up and down movements, and preventing unexpected situations such as tilting or jamming, thus ensuring the smooth and continuous operation of the liquid discharge work.

[0052] Furthermore, the collection box 2 is provided with multiple guide posts 43 at intervals. The multiple guide posts 43 can make the extrusion plate 42 be subjected to uniform force during movement, thereby improving the stability of the movement of the extrusion plate 42. Among them, the number of guide posts 43 includes, but is not limited to, two, three or six, and is not limited here.

[0053] like Figure 1 and Figure 3 As shown, in order to ensure a sealed connection between the collection tank 2 and the natural gas pipeline 1, the natural gas long-distance pipeline liquid discharge device also includes a connecting component 5. The connecting component 5 includes a connecting pipe 51 and a protective shell 52. One end of the connecting pipe 51 is sealed and connected to the drain port, and the other end is connected to the collection tank 2, which is used to guide the accumulated liquid into the collection tank 2. The protective shell 52 is covered outside the connecting pipe 51, and the upper end of the protective shell 52 is sealed and connected to the outer wall of the natural gas pipeline 1, and the lower end is sealed and connected to the collection tank 2, thereby providing multiple sealing guarantees for the connection between the natural gas pipeline 1 and the collection tank 2, preventing the leakage of natural gas or liquid due to damage to the connecting pipe 51.

[0054] It should be noted that impurities and solid particles in the pipe can easily clog the connecting pipe 51 when discharged along with the accumulated liquid. Figure 3 and Figure 4 As shown, in order to solve the above problems, the liquid discharge device for long-distance natural gas pipelines also includes an anti-clogging impeller 6. The anti-clogging impeller 6 includes a rotating shaft 61 and a baffle 62. The rotating shaft 61 is rotatably disposed inside the connecting pipe 51, and the baffle 62 is disposed circumferentially on the rotating shaft 61. The baffle 62 can drive the anti-clogging impeller 6 to rotate under the impact of the liquid. This rotation can adjust the fluid state inside the connecting pipe 51 in a timely manner, break the formed blockage structure, thereby effectively preventing the connecting pipe 51 from being blocked and ensuring the smooth operation of the entire fluid transportation system.

[0055] like Figure 4As shown, there are at least two anti-clogging impellers 6, with their shafts 61 arranged parallel to each other vertically and at intervals, and the shafts 61 extending horizontally. Multiple anti-clogging impellers 6 form a three-dimensional turbulence zone, expanding the range of fluid disturbance. The spaced-out anti-clogging impellers 6 can perform graded disturbance of the fluid; after one anti-clogging impeller 6 disrupts the clogging structure, subsequent anti-clogging impellers 6 continue to follow, preventing impurities from accumulating again and forming a more stable and efficient anti-clogging barrier.

[0056] Among them, the baffle 62 is usually made of a thin metal sheet with good elasticity and corrosion resistance, such as stainless steel sheet, and its shape is designed as a fan to better adapt to the flow characteristics of the fluid.

[0057] like Figure 2 As shown, in some optional embodiments, the natural gas long-distance pipeline liquid discharge device further includes a cleaning component 7. The cleaning component 7 includes a cleaning brush 71, which is movably disposed within the natural gas pipeline 1 along the axial direction of the natural gas pipeline 1. The cleaning brush 71 includes an annular base 711 and bristles 712 disposed on the outer periphery of the annular base 711. The bristles 712 abut against the inner wall of the natural gas pipeline 1. When there is gas or liquid flowing within the natural gas pipeline 1, the cleaning brush 71 is pushed to slide along the axis of the natural gas pipeline 1. During this process, the bristles 712 can effectively remove the dirt adhering to the pipe wall of the natural gas pipeline 1. The dirt brushed off by the bristles 712 enters the connecting pipe 51 below through the drain port at the bottom of the natural gas pipeline 1 and is discharged together with the liquid.

[0058] Furthermore, the cleaning component 7 also includes a limiting ring 72 and a guide rod 73. The limiting ring 72 is provided at both ends of the natural gas pipeline 1, and the guide rod 73 is arranged along the axis of the natural gas pipeline 1. Both ends of the guide rod 73 are connected to the limiting ring 72. The annular base 711 is slidably connected to the guide rod 73, thereby providing guidance for the movement of the cleaning brush 71 in the natural gas pipeline 1, so that the cleaning brush 71 can make a straight and smooth reciprocating motion along the pipeline axis, thereby making more uniform and comprehensive contact with the inner wall of the pipeline, avoiding cleaning blind spots caused by deviation or shaking, and improving cleaning efficiency and cleaning effect.

[0059] In this embodiment, the cleaning component 7 includes a plurality of guide rods 73 evenly spaced along the circumference of the limiting ring 72. The sliding connection between the guide rods 73 and the annular base 711 provides multiple force points for the annular base 711, effectively dispersing the lateral force generated by the cleaning brush 71 during movement. This greatly improves the stability of the annular base 711 when moving within the pipe, ensuring stable operation even when facing complex fluid environments or changes in cleaning resistance within the pipe, and preventing shaking or deviation. The number of guide rods 73 includes, but is not limited to, two, three, or six, and is not limited here.

[0060] The limiting ring 72 is made of high-strength and corrosion-resistant metal, such as stainless steel or carbon steel with special anti-corrosion treatment, to ensure that it can withstand the erosion of various chemicals and physical impacts for a long time in the complex natural gas transportation environment without deformation or damage. The guide rod 73 is generally made of round solid metal rod, and the material is matched with the limiting ring 72 to ensure the consistency of overall strength. The annular base 711 is made of wear-resistant and lightweight engineering plastic or metal. The bristles 712 are made of high-strength, corrosion-resistant and flexible nylon material. The nylon bristles 712 are soft and can effectively avoid scratching the inner wall of the pipeline. At the same time, they have excellent wear resistance and can withstand repeated friction for a long time.

[0061] like Figure 1 As shown, the liquid discharge device for long-distance natural gas pipelines also includes mounting rods 8 and connecting rods 9. At least two mounting rods 8 are spaced apart around the circumference of the natural gas pipeline 1. The mounting rods 8 are fixedly connected to the flanges at both ends of the natural gas pipeline. The collection box 2 is installed on the mounting rods 8 through multiple connecting rods 9, thereby providing a reliable bearing platform for the collection box 2 and enhancing the stability of the device.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for draining accumulated liquid from a long-distance natural gas pipeline, characterized in that, include: Natural gas pipeline (1), wherein a drain port is provided at the bottom of the natural gas pipeline (1); A collection box (2) is connected to the drain port, and a drain channel (3) is provided at the bottom of the collection box (2); The extrusion mechanism (4) includes a drive assembly (41) and an extrusion plate (42). The extrusion plate (42) is movably disposed in the collection box (2) in the vertical direction. The output end of the drive assembly (41) is connected to the extrusion plate (42) for driving the extrusion plate (42) to reciprocate in the vertical direction in the collection box (2).

2. The natural gas long-distance pipeline liquid discharge device according to claim 1, characterized in that, The extrusion plate (42) is slidably connected to the inner wall of the collection box (2).

3. The natural gas long-distance pipeline liquid discharge device according to claim 2, characterized in that, The extrusion plate (42) has multiple through holes (421).

4. The natural gas long-distance pipeline liquid discharge device according to claim 1, characterized in that, The drive assembly (41) includes a drive member (411), an eccentric wheel (412), a transmission member (413), and a follower member (414). The output end of the drive member (411) is connected to the eccentric wheel (412) to drive the eccentric wheel (412) to rotate. The first end of the transmission member (413) is rotatably connected to the eccentric wheel (412), and its rotation connection point is offset from the rotation center of the eccentric wheel (412). One end of the follower member (414) is rotatably connected to the second end of the transmission member (413), and the other end is fixedly connected to the extrusion plate (42).

5. The natural gas long-distance pipeline liquid discharge device according to claim 4, characterized in that, The drive assembly (41) further includes a seal (415). A sealing hole is provided on the collection box (2). The follower (414) passes through the sealing hole and is fixedly connected to the extrusion plate (42). The seal (415) is fitted onto the follower (414), and the seal (415) seals against the inner wall of the sealing hole; and / or, The extrusion mechanism (4) further includes a guide post (43), which is arranged vertically inside the collection box (2). The extrusion plate (42) has a guide hole that slides with the guide post (43).

6. The natural gas long-distance pipeline liquid discharge device according to claim 1, characterized in that, The natural gas long-distance pipeline liquid discharge device also includes a connecting component (5), which includes a connecting pipe (51) and a protective shell (52). One end of the connecting pipe (51) is sealed and connected to the drain port, and the other end is connected to the collection box (2). The protective shell (52) is covered outside the connecting pipe (51), and the upper end of the protective shell (52) is sealed and connected to the outer wall of the natural gas pipeline (1), and the lower end is sealed and connected to the collection box (2).

7. The natural gas long-distance pipeline liquid discharge device according to claim 6, characterized in that, The natural gas long-distance pipeline liquid discharge device also includes an anti-clogging impeller (6), which includes a rotating shaft (61) and a baffle (62). The rotating shaft (61) is rotatably disposed inside the connecting pipe (51), and the baffle (62) is disposed circumferentially on the rotating shaft (61). The baffle (62) can drive the anti-clogging impeller (6) to rotate under the impact of the liquid.

8. The natural gas long-distance pipeline liquid discharge device according to claim 7, characterized in that, There are at least two anti-clogging impellers (6), and the shafts (61) of the at least two anti-clogging impellers (6) are parallel and spaced apart in the vertical direction, and the shafts (61) extend in the horizontal direction.

9. The natural gas long-distance pipeline liquid discharge device according to any one of claims 1 to 8, characterized in that, The natural gas pipeline liquid discharge device further includes a cleaning component (7), which includes a cleaning brush (71). The cleaning brush (71) is movably disposed within the natural gas pipeline (1) along the axial direction of the natural gas pipeline (1). The cleaning brush (71) includes an annular base (711) and bristles (712) disposed on the outer periphery of the annular base (711). The bristles (712) abut against the inner wall of the natural gas pipeline (1).

10. The natural gas long-distance pipeline liquid discharge device according to claim 9, characterized in that, The cleaning component (7) further includes a limiting ring (72) and a guide rod (73). The limiting ring (72) is provided at both ends of the natural gas pipeline (1). The guide rod (73) is arranged along the axis of the natural gas pipeline (1), and both ends of the guide rod (73) are connected to the limiting ring (72). The annular base (711) is slidably connected to the guide rod (73).

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