Natural gas pipeline auxiliary device and method

Abstract

The invention relates to the technical field of natural gas pipeline welding, in particular to a natural gas pipeline auxiliary device and method. The two sets of fixing frames are each of an annular structure, and the two sets of fixing frames are arranged at the port of the natural gas pipeline in a sleeving mode. The two groups of fixing frames are connected through a plurality of reinforcing rods; a reinforcing mechanism is arranged between the two fixing frames, abuts against the portion, between the two fixing frames, of the outer wall of the natural gas pipeline and is used for adjusting the position of a port of the natural gas pipeline to be aligned. Guide grooves are formed in the two sets of fixing frames respectively, moving assemblies are connected into the guide grooves in a sliding mode, the driving end of each moving assembly is connected with a power assembly, and the power assemblies are fixed to the two sets of fixing frames respectively; the heating equipment is arranged between the two sets of fixing frames, the two ends of the heating equipment are connected with the moving assemblies correspondingly, and the moving assemblies are annularly and movably arranged along the port part of the natural gas pipeline, so that the technical problems of precise alignment and auxiliary heating of the port part of the natural gas pipeline are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of natural gas pipeline welding technology, specifically to an auxiliary device and method for natural gas pipelines. Background Technology

[0002] Natural gas pipelines are pipelines that transport natural gas (including associated gas from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users. Also known as gas transmission pipelines, they are the primary method for transporting large quantities of natural gas over land. Natural gas pipelines account for approximately half of the world's total pipeline length.

[0003] Currently, welding of small-diameter natural gas pipelines typically involves manual adjustment of their position. This is difficult due to their weight, especially for large-diameter pipelines. The weight of large-diameter pipelines makes precise port connection challenging, requiring external fixators. However, after connection, spot welding is needed to secure the large-diameter pipeline ports. The lateral reinforcing bars of current connectors interfere with this spot welding process. Therefore, this paper proposes an auxiliary device for natural gas pipelines to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary device and method for natural gas pipelines to solve the technical problems of how to accurately align the port of a natural gas pipeline and provide auxiliary heating in the prior art.

[0005] This invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a natural gas pipeline auxiliary device, comprising two sets of fixing brackets;

[0007] Both sets of fixing brackets are ring-shaped and are fitted onto the ends of the natural gas pipeline; the two sets of fixing brackets are connected by several reinforcing rods.

[0008] A reinforcement mechanism is provided between the two sets of fixing frames. The reinforcement mechanism abuts against the outer wall of the natural gas pipeline between the two sets of fixing frames and is used to adjust the position of the natural gas pipeline port for alignment.

[0009] Guide grooves are provided on the two sets of fixed frames, and moving components are slidably connected in the guide grooves. The driving end of each moving component is connected to a power component, and the power components are fixed on the two sets of fixed frames respectively.

[0010] A heating device is provided between the two sets of fixed frames. The two ends of the heating device are respectively connected to a moving component, and the moving component moves in a ring along the port of the natural gas pipeline.

[0011] Preferably, the fixed frame has a structure of two semicircles, one end of each semicircle is rotatably connected to a rotating shaft, and the other ends of the two semicircles are connected by a connecting plate relative to the rotating shaft.

[0012] Furthermore, a fixing pin is provided on the outer side of the connecting plate, and the fixing pin passes through the connecting plate and is threaded to the fixing frame.

[0013] Preferably, the reinforcement mechanism includes a reinforcement plate assembly and an extrusion plate;

[0014] The two ends of the reinforcing plate assembly are respectively fixed on two sets of fixing brackets. The reinforcing plate assembly has screw holes, and the extrusion plate is threaded into the screw holes. The end of the extrusion plate abuts against the outer wall of the natural gas pipeline.

[0015] Furthermore, the reinforcement plate assembly includes reinforcement blocks and reinforcement plates;

[0016] Both ends of the reinforcing plate are fixed to two sets of fixing frames by reinforcing blocks, and fixing screws are provided on the reinforcing blocks; the surface of the reinforcing plate is arc-shaped to fit against the outer wall of the natural gas pipeline; the screw holes are provided on the reinforcing plate, and the extrusion plate passes through the screw holes and abuts against the outer wall of the natural gas pipeline.

[0017] Preferably, the guide grooves are distributed in an arc shape on both sides of each fixed frame, and the moving components are slidably connected in the guide grooves on both sides of the fixed frame.

[0018] Furthermore, the moving components include a moving plate assembly and a clamping frame;

[0019] The movable plate assembly slides within the guide groove, and the driving end of the movable plate assembly is connected to the power assembly, which drives the movable plate assembly to move along the guide groove.

[0020] The clamping frame is located at the port of the movable plate assembly, and the two ends of the heating device are connected by clamping frames of two sets of fixed frames respectively.

[0021] Furthermore, the movable plate assembly includes an arc-shaped plate, a sliding plate, and a movable plate;

[0022] The outer side of the arc-shaped plate is slidably connected to the fixed frame in the guide groove through a sliding plate and a moving plate, respectively.

[0023] The outer side of the movable plate is evenly distributed with second teeth, which mesh with the power component;

[0024] The clamping frame is located at the port of the arc-shaped plate.

[0025] Furthermore, the power components are fixed to both sides of each fixed frame, and the power components include a fixed frame, a motor and a turntable;

[0026] The outer side of the fixed frame is fixedly connected to the fixed bracket. The motor is set inside the fixed frame. The turntable is sleeved on the free end of the motor. The outer side of the motor is respectively equipped with first teeth, which are used to mesh with the second teeth on the outer side of the moving plate.

[0027] Secondly, the present invention also provides a natural gas pipeline auxiliary method, based on the aforementioned natural gas pipeline auxiliary device, comprising the following processes:

[0028] Two sets of fixing brackets are installed at the port of the natural gas pipeline. The reinforcement mechanism is then placed tightly against the outer wall of the natural gas pipeline between the two sets of fixing brackets. The end of the natural gas pipeline is then aligned by pushing the reinforcement mechanism.

[0029] The two ends of the heating device are connected to the moving components of two sets of fixed frames respectively. The power component drives the heating device to move in a circle along the port of the natural gas pipeline through the moving components to preheat the port of the natural gas pipeline.

[0030] Compared with the prior art, the present invention has the following beneficial technical effects:

[0031] This invention provides an auxiliary device for natural gas pipelines. Two sets of fixed brackets are fitted onto the port of the natural gas pipeline to effectively secure it. A reinforcing mechanism is provided between the two sets of fixed brackets, abutting against the outer wall of the natural gas pipeline between the two sets of fixed brackets. This reinforcing mechanism allows for effective adjustment and alignment of the natural gas pipeline port. Guide grooves are provided on each of the two sets of fixed brackets, and movable components are slidably connected within these grooves. The driving end of each movable component is connected to a power component, which is fixed to both sets of fixed brackets. A heating device is positioned between the two sets of fixed brackets, with both ends of the heating device connected to the movable components. The movable components move circumferentially along the natural gas pipeline port, effectively heating the pipeline and facilitating subsequent spot welding.

[0032] Furthermore, the fixing frame is in the form of two semicircles, one end of which is rotatably connected to a pivot. The other ends of the two semicircles relative to the pivot are connected by a connecting plate. The pivot enables the two semicircles to open and close, making it easy to fit the fixing frame onto the natural gas pipeline. The connecting rod then secures the two semicircular fixing frames.

[0033] Furthermore, a fixing pin is provided on the outer side of the connecting plate. The fixing pin passes through the connecting plate and is threaded to the fixing bracket, which improves the stability of the fixing bracket on the natural gas pipeline.

[0034] Furthermore, the reinforcement mechanism includes a reinforcement plate assembly and an extrusion plate; the two ends of the reinforcement plate assembly are respectively fixed on two sets of fixing frames, and the reinforcement plate assembly is provided with screw holes. The extrusion plate is threaded into the screw holes, and the end of the extrusion plate abuts against the outer wall of the natural gas pipeline. The extrusion plate can effectively align and adjust the pipeline end, achieving precise alignment of the pipeline.

[0035] Furthermore, the reinforcement plate assembly includes reinforcement blocks and reinforcement plates; both ends of the reinforcement plate are fixed to two sets of fixing frames by reinforcement blocks, and fixing screws are provided on the reinforcement blocks; the surface of the reinforcement plate is arc-shaped to fit against the outer wall of the natural gas pipeline; screw holes are provided on the reinforcement plate, and the extrusion plate passes through the screw holes and abuts against the outer wall of the natural gas pipeline. Both ends of the reinforcement plate are fixedly connected to the fixing frames by reinforcement blocks, which improves the stability of the connection between the fixing frames. The extrusion plate passes through the reinforcement plate and abuts against the outer wall of the natural gas pipeline, which can effectively adjust the position of the natural gas pipeline port.

[0036] Furthermore, the guide grooves are distributed in an arc shape on both sides of each fixed frame, and moving components are slidably connected in the guide grooves on both sides of the fixed frame, ensuring the uniformity of heating of the entire circumferential natural gas pipeline.

[0037] Furthermore, the moving component includes a moving plate assembly and a clamping frame; the moving plate assembly slides within the guide groove, and the driving end of the moving plate assembly is connected to the power assembly, which drives the moving plate assembly to move along the guide groove; the clamping frame is located at the port of the moving plate assembly, and the two ends of the heating equipment are connected by clamping frames of two sets of fixed frames respectively. The clamping frame effectively ensures the stability of the heating equipment being clamped between the fixed frames, thus ensuring the circumferential heating treatment of the natural gas pipeline.

[0038] Furthermore, the power unit effectively transmits power to the moving component, ensuring that the heating equipment heats the natural gas pipeline circumferentially through the moving component.

[0039] This invention also provides an auxiliary method for natural gas pipelines. The reinforcing blocks, reinforcing plates, and extrusion plates reinforce the fixing frames on both the front and rear sides. After the natural gas pipeline ports are connected, when heating or spot welding is required at the ports, the extrusion plates can be removed and the reinforcing plates slid to expand the space, facilitating spot welding reinforcement of the natural gas pipeline. This device serves a good auxiliary purpose in use. Before spot welding, the natural gas end needs to be heated. By inserting the heating device into the clamping frame and activating the power assembly, the second tooth, moving plate, and arc-shaped plate can be moved. The four moving components can quickly heat the end without obstruction from the reinforcing rods, greatly improving the end-processing speed and ensuring uniform heating of the natural gas end, thus guaranteeing processing quality. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the auxiliary device structure for a natural gas pipeline in an embodiment of the present invention;

[0041] Figure 2 This is a partial side view of the structure of the natural gas pipeline auxiliary device in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the reinforcement mechanism structure in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the reinforcing plate structure in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the reinforcing block structure in an embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the power component structure in an embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the mobile component structure in an embodiment of the present invention;

[0047] In the diagram: 1-Fixed frame; 2-Reinforcing rod; 3-Guide groove; 4-Reinforcing mechanism; 5-Power component; 6-Moving component; 7-Connecting plate; 8-Fixing pin; 9-Rotating shaft; 401-Reinforcing block; 402-Fixing screw; 403-Reinforcing plate; 404-Extrusion plate; 405-Screw hole; 501-Fixed frame; 502-Motor; 503-Turntable; 504-First tooth; 601-Arc plate; 602-Sliding plate; 603-Moving plate; 604-Second tooth; 605-Clamping frame. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] The present invention will now be described in further detail with reference to the accompanying drawings:

[0050] The purpose of this invention is to provide an auxiliary device and method for natural gas pipelines to solve the technical problems of how to accurately align the port of a natural gas pipeline and provide auxiliary heating in the prior art.

[0051] Example 1

[0052] See Figure 1 and Figure 2 In one embodiment of the present invention, a natural gas pipeline auxiliary device is provided, including two sets of fixing frames 1;

[0053] Both sets of fixing brackets 1 are ring-shaped structures, and both sets of fixing brackets 1 are fitted onto the port of the natural gas pipeline; the two sets of fixing brackets 1 are connected by several reinforcing rods 2;

[0054] A reinforcing mechanism 4 is provided between the two sets of fixing frames 1. The reinforcing mechanism 4 abuts against the outer wall of the natural gas pipeline between the two sets of fixing frames 1 and is used to adjust the position of the natural gas pipeline port for alignment.

[0055] Guide grooves 3 are respectively opened on the two sets of fixed frames 1. A moving component 6 is slidably connected in the guide groove 3. The driving end of each moving component 6 is connected to a power component 5. The power component 5 is fixed on the two sets of fixed frames 1 respectively.

[0056] A heating device is provided between the two sets of fixed frames 1. The two ends of the heating device are respectively connected to the moving component 6, and the moving component 6 is arranged to move in a ring along the port of the natural gas pipeline.

[0057] In this embodiment, the reinforcing rod 2 is used to connect the front and rear fixed frames 1, and the fixed connection method ensures the stability of the device.

[0058] Specifically, the structure of the fixing frame 1 is in the form of two semi-circular structures, one end of each of the two semi-circular structures is rotatably connected to a rotating shaft 9, and the other ends of the two semi-circular structures relative to the rotating shaft 9 are connected by a connecting plate 7.

[0059] The connecting plate 7 has a fixing pin 8 on its outer side, which is threaded through the connecting plate 7 and connected to the fixing frame 1.

[0060] Specifically, according to Figure 3 As shown, the reinforcement mechanism 4 includes a reinforcement plate assembly and an extrusion plate 404;

[0061] The two ends of the reinforcing plate assembly are respectively fixed on two sets of fixing brackets 1. The reinforcing plate assembly is provided with screw holes 405. The extrusion plate 404 is threaded into the screw holes 405, and the end of the extrusion plate 404 abuts against the outer wall of the natural gas pipeline.

[0062] Among them, according to Figure 5 As shown, the reinforcing plate assembly includes a reinforcing block 401 and a reinforcing plate 403;

[0063] Both ends of the reinforcing plate 403 are fixed to two sets of fixing brackets 1 by reinforcing blocks 401, and fixing screws 402 are provided on the reinforcing blocks 401; the plate surface of the reinforcing plate 403 is arc-shaped for fitting against the outer wall of the natural gas pipeline; the screw holes 405 are provided on the reinforcing plate 403, such as... Figure 4 As shown, the extrusion plate 404 passes through the reinforcing plate 403 via the screw hole 405 and abuts against the outer wall of the natural gas pipeline.

[0064] In this embodiment, the two sides of the reinforcing plate 403 are slidably connected to the grooves opened on the inner wall of the fixing frame 1.

[0065] When spot welding is performed, if the local reinforcement mechanism 4 is located outside the spot welding trajectory and affects the subsequent spot welding work, the spot welding work can be facilitated by removing the fixing screw 402, loosening the extrusion plate 404, and then moving the reinforcement plate 403, which helps to ensure the quality of spot welding.

[0066] Specifically, the guide grooves 3 are distributed in an arc shape on both sides of each fixed frame 1, and the moving components 6 are slidably connected in the guide grooves 3 on both sides of the fixed frame 1.

[0067] Among them, according to Figure 7 As shown, the moving component 6 includes a moving plate assembly and a clamping frame 605;

[0068] The movable plate assembly slides within the guide groove 3, and the driving end of the movable plate assembly is connected to the power assembly 5, and the power assembly 5 drives the movable plate assembly to move along the guide groove 3.

[0069] The clamping frame 605 is located at the port of the moving plate assembly, and the two ends of the heating device are respectively connected by the clamping frames 605 of the two sets of fixing frames 1.

[0070] The movable plate assembly includes an arc plate 601, a sliding plate 602, and a movable plate 603.

[0071] The outer side of the arc plate 601 is slidably connected to the fixed frame 1 in the guide groove 3 via the sliding plate 602 and the moving plate 603 respectively.

[0072] The outer side of the movable plate 603 is evenly distributed with second teeth 604, which mesh with the power component 5.

[0073] The clamping frame 605 is located at the port of the arc-shaped plate 601.

[0074] In this embodiment, there are four moving components 6, and the moving components 6 on the front and rear sides are arranged symmetrically. The moving trajectories of the moving components 6 on the front and rear sides are the same or opposite. Therefore, the arrangement of four sets of moving components 6 can greatly improve the heating efficiency of the heating equipment for the end of the natural gas pipeline and effectively ensure uniform heating.

[0075] In this embodiment, when heating the end of the natural gas pipeline, the heater is inserted into the clamping frame 605, and the flame tip of the heater is aligned with the docking part of the natural gas pipeline. Then, the power assembly 5 is activated to drive the second tooth 604 to move, thereby causing the moving plate 603 and the arc plate 601 to slide inside the guide groove 3 inside the fixed frame 1. At this time, the docking part of the natural gas pipeline can be preheated evenly. The sliding plate 602 ensures the stable sliding of the arc plate 601. In use, the four sets of clamping frames 605 move in opposite directions on the front and rear sides, which can ensure stable and comprehensive heating of the docking part of the natural gas pipeline and greatly improve the efficiency of the heating work.

[0076] Specifically, according to Figure 6 As shown, the power assembly 5 is fixed on both sides of each fixed frame 1. The power assembly 5 includes a fixed frame 501, a motor 502 and a turntable 503.

[0077] The outer side of the fixed frame 501 is fixedly connected to the fixed bracket 1. The motor 502 is disposed inside the fixed frame 501. The turntable 503 is sleeved on the free end of the motor 502. The outer side of the motor 502 is provided with first teeth 504. The first teeth 504 are used to mesh with the second teeth 604 on the outer side of the moving plate 603.

[0078] In this embodiment, when heating the end of the natural gas pipeline, the heating device is inserted into the moving component 6, and then the motor 502 is started to drive the turntable 503 to rotate, which in turn causes the turntable 503 to drive the first tooth 504 to move, thereby driving the moving component 6 to move up and down, so as to facilitate rapid heating of the end of the natural gas pipeline.

[0079] In summary, this embodiment provides an auxiliary device for natural gas pipelines. Two sets of fixing brackets are fitted onto the port of the natural gas pipeline to effectively secure it. A reinforcing mechanism is provided between the two sets of fixing brackets, abutting against the outer wall of the natural gas pipeline between the two sets of fixing brackets. This reinforcing mechanism allows for effective adjustment and alignment of the natural gas pipeline port. Guide grooves are provided on each of the two sets of fixing brackets, and movable components are slidably connected within these grooves. The drive end of each movable component is connected to a power component, which is fixed to both sets of fixing brackets. A heating device is positioned between the two sets of fixing brackets, with both ends of the heating device connected to the movable components. The movable components move circumferentially along the port of the natural gas pipeline, effectively heating the pipeline and facilitating subsequent spot welding.

[0080] Example 2

[0081] This embodiment 2 provides a natural gas pipeline auxiliary method, based on the natural gas pipeline auxiliary device described above, including the following process.

[0082] In use, the fixing bracket 1 is installed at the port of the natural gas pipeline, and the fixing pin 8 is screwed to the connecting plate 7 through the connecting plate 7 to fix the fixing bracket 1. At the same time, the end of the natural gas pipeline can be fixed by activating the reinforcement mechanism 4, so as to achieve the purpose of fixing the end of the natural gas pipeline with precision alignment. After alignment, the end of the natural gas pipeline needs to be heated. The heating device is inserted into the moving component 6, and the moving component 6 can be moved by activating the power component 5. The moving components 6 on the front and rear sides move in opposite directions, which can greatly improve the heating efficiency and ensure the heating quality by moving the heating device evenly. Then, when performing subsequent spot welding work, the spot welding position can be calculated in advance. Then, the reinforcement mechanism 4 at the corresponding position is removed and slid, and then the spot welding gun can be used to fix the appropriate position by hand, which is convenient for operation.

[0083] In this embodiment, after the natural gas pipeline is connected, the position of the connecting plate at the spot welding location can be adjusted according to the actual situation, and the reinforcement mechanism in other parts can still achieve the purpose of fixing, thus expanding the applicability of this device.

[0084] Before spot welding, the natural gas end needs to be heated. The traditional method involves manually heating the end with a handheld heating device, but the reinforcing rods hinder this movement. This device, however, inserts the heating device into the clamping frame and activates the power unit to move the second tooth, the moving plate, and the arc plate. At this point, the four moving components can quickly heat the end without the obstruction of the reinforcing rods. This not only greatly improves the end processing speed but also ensures uniform heating of the natural gas end, guaranteeing processing quality.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A natural gas pipeline auxiliary device, characterized in that, Includes two sets of fixing brackets (1); Both sets of fixing brackets (1) are ring-shaped and are fitted onto the port of the natural gas pipeline; the two sets of fixing brackets (1) are connected by several reinforcing rods (2); A reinforcing mechanism (4) is provided between the two sets of fixing frames (1). The reinforcing mechanism (4) abuts against the outer wall of the natural gas pipeline between the two sets of fixing frames (1) and is used to adjust the position of the natural gas pipeline port for alignment. Guide grooves (3) are opened on the two sets of fixed frames (1), and a moving component (6) is slidably connected in the guide groove (3). The driving end of each moving component (6) is connected to a power component (5), and the power component (5) is fixed on the two sets of fixed frames (1). A heating device is provided between the two sets of fixed frames (1). The two ends of the heating device are respectively connected to the moving component (6), and the moving component (6) is moved in a ring along the port of the natural gas pipeline.

2. The natural gas pipeline auxiliary device according to claim 1, characterized in that, The fixed frame (1) has a structure of two semicircles, one end of each semicircle is rotatably connected to a rotating shaft (9), and the other end of the two semicircles is connected by a connecting plate (7) relative to the rotating shaft (9).

3. A natural gas pipeline auxiliary device according to claim 2, characterized in that, The outer side of the connecting plate (7) is provided with a fixing pin (8), which passes through the connecting plate (7) and is threaded to the fixing frame (1).

4. A natural gas pipeline auxiliary device according to claim 1, characterized in that, The reinforcement mechanism (4) includes a reinforcement plate assembly and an extrusion plate (404); The two ends of the reinforcing plate assembly are respectively fixed on two sets of fixing brackets (1). The reinforcing plate assembly is provided with screw holes (405). The extrusion plate (404) is threaded into the screw holes (405), and the end of the extrusion plate (4) abuts against the outer wall of the natural gas pipeline.

5. A natural gas pipeline auxiliary device according to claim 4, characterized in that, The reinforcing plate assembly includes a reinforcing block (401) and a reinforcing plate (403); The two ends of the reinforcing plate (403) are respectively fixed to two sets of fixing frames (1) by reinforcing blocks (401), and fixing screws (402) are provided on the reinforcing blocks (401); the plate surface of the reinforcing plate (403) is arc-shaped, which is used to fit against the outer wall of the natural gas pipeline; the screw hole (405) is provided on the reinforcing plate (403), and the extrusion plate (404) passes through the screw hole (405) through the reinforcing plate (403) and abuts against the outer wall of the natural gas pipeline.

6. A natural gas pipeline auxiliary device according to claim 1, characterized in that, The guide grooves (3) are distributed in an arc shape on both sides of each fixed frame (1), and the moving components (6) are slidably connected in the guide grooves (3) on both sides of the fixed frame (1).

7. A natural gas pipeline auxiliary device according to claim 6, characterized in that, The moving component (6) includes a moving plate assembly and a clamping frame (605); The movable plate assembly slides in the guide groove (3), and the driving end of the movable plate assembly is connected to the power assembly (5), and the power assembly (5) drives the movable plate assembly to move along the guide groove (3); The clamping frame (605) is located at the port of the moving plate assembly, and the two ends of the heating device are connected by the clamping frames (605) of two sets of fixing frames (1).

8. A natural gas pipeline auxiliary device according to claim 7, characterized in that, The movable plate assembly includes an arc-shaped plate (601), a sliding plate (602), and a movable plate (603); The outer side of the arc plate (601) is slidably connected to the fixed frame (1) in the guide groove (3) through the sliding plate (602) and the moving plate (603); The outer side of the movable plate (603) is evenly distributed with second teeth (604), which mesh with the power component (5); The clamping frame (605) is located at the port of the arc plate (601).

9. A natural gas pipeline auxiliary device according to claim 7, characterized in that, The power assembly (5) is fixed on both sides of each fixed frame (1), and the power assembly (5) includes a fixed frame (501), a motor (502) and a turntable (503); The outer side of the fixed frame (501) is fixedly connected to the fixed bracket (1). The motor (502) is located inside the fixed frame (501). The turntable (503) is sleeved on the free end of the motor (502). The outer side of the motor (502) is respectively equipped with first teeth (504). The first teeth (504) are used to mesh with the second teeth (604) on the outer side of the moving plate (603).

10. A method for assisting natural gas pipelines, characterized in that, A natural gas pipeline auxiliary device according to any one of claims 1-9 includes the following process: Two sets of fixing brackets (1) are installed at the port of the natural gas pipeline. The reinforcement mechanism (4) is placed tightly against the outer wall of the natural gas pipeline between the two sets of fixing brackets (1). The end of the natural gas pipeline is aligned by pushing the reinforcement mechanism (4). The two ends of the heating device are connected to the moving components (6) of the two sets of fixed frames (1) respectively, and the power component (5) drives the heating device to move in a circle along the port of the natural gas pipeline through the moving component (6) to preheat the port of the natural gas pipeline.

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