Natural gas pipeline anti-corrosion device

Abstract

The utility model relates to the technical field of pipeline maintenance, and particularly discloses a natural gas pipeline anti-corrosion device which comprises a front cylinder and a rear cylinder, a plurality of inserting grooves are formed in the outer side of the front cylinder, each inserting groove is provided with a walking wheel mechanism, the walking wheel mechanisms are connected with the inserting grooves in a sliding mode, and a push rod assembly is arranged in the front cylinder. Each walking wheel mechanism is provided with a preservative sprayer, the outer side of the rear barrel is sleeved with a cleaning ring, the cleaning ring is rotationally connected with the rear barrel, a plurality of scraping plates are arranged on the outer edge of the cleaning ring, and a driving assembly used for controlling the cleaning ring to rotate is arranged on the outer side of the rear barrel. The anti-corrosion device adopts a self-propelled design and can spray an anti-corrosion agent to the inner wall of the pipeline while moving, and when the driving assembly controls the cleaning ring to rotate, the cleaning ring can smear the anti-corrosion agent sprayed to the inner wall of the pipeline through the scraping plate in the rotating process, so that the anti-corrosion agent can uniformly cover the inner side wall of the pipeline, and the anti-corrosion effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline maintenance, in particular to a natural gas pipeline anti-corrosion device. Background Art

[0002] Natural gas pipelines are mostly made of metal and are susceptible to corrosion from factors such as soil, moisture, and microorganisms. Over long periods of use, corrosion on the inner walls of these pipelines can produce deposits, impacting natural gas flow and delivery efficiency. Corrosion is also a major cause of natural gas pipeline leaks. Effective corrosion prevention of natural gas pipelines is crucial to ensuring the safe, efficient, and continuous delivery of natural gas to end users.

[0003] Common natural gas pipeline anti-corrosion devices are mostly probe-type structures, that is, a probe equipped with a nozzle is inserted into the natural gas pipeline. The staff pushes the probe and continuously sprays the anti-corrosion agent onto the inner wall of the pipeline through the injection device and the nozzle. The manual pushing method is not efficient, and because the nozzle is mostly located in the lower area inside the pipeline, the anti-corrosion agent cannot be evenly covered on the inner wall of the pipeline during the spraying process, affecting the anti-corrosion effect. Utility Model Content

[0004] In response to the above problems, the present utility model proposes a natural gas pipeline anti-corrosion device to solve the shortcomings of existing natural gas pipeline anti-corrosion devices. During the spraying process, the nozzles are mostly located in the lower area inside the pipeline, so the preservative cannot be evenly covered on the inner wall of the pipeline, affecting the anti-corrosion effect.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a natural gas pipeline anti-corrosion device, comprising a front cylinder and a rear cylinder, the rear cylinder being fixedly connected to the tail end of the front cylinder;

[0006] There are multiple slots on the outside of the front tube, each of which is equipped with a travel wheel mechanism, which is slidably connected to the slot. A push rod assembly is provided inside the front tube for pushing each travel wheel mechanism to open synchronously.

[0007] Each traveling wheel mechanism is equipped with an anti-corrosion sprayer;

[0008] A cleaning ring is sleeved on the outside of the rear cylinder, the cleaning ring is rotatably connected to the rear cylinder, a plurality of scrapers are arranged on the outer edge of the cleaning ring, and a driving assembly for controlling the rotation of the cleaning ring is arranged on the outside of the rear cylinder.

[0009] A further improvement is that at least three running wheel mechanisms are provided on the outside of the front cylinder, and the running wheel mechanisms are evenly arranged around the axis of the front cylinder.

[0010] Further improvements are: the walking wheel mechanism includes a wheel bracket and a guide wheel, the guide wheel is placed on the outside of the front cylinder, one end of the wheel bracket is rotatably connected to the guide wheel, the other end of the wheel bracket is inserted into the slot and slidably connected to the slot, and a first motor is provided on the outside of the wheel bracket for controlling the rotation of the guide wheel.

[0011] Further improvements are: the push rod assembly includes an electric push rod, the mounting end of the electric push rod is fixedly connected to the head end of the front cylinder, the output end of the electric push rod penetrates into the front cylinder and is fixedly connected to the oblique wedge block provided in the front cylinder, the oblique wedge block is placed between each wheel bracket, and the wheel bracket is provided with an inclined surface at the end away from the guide wheel, the inclined surface is slidably matched with the oblique wedge block, and a spring structure is provided on the inner side of the front cylinder for pushing each wheel bracket to maintain contact with the oblique wedge block.

[0012] A further improvement is that the spring structure includes a spring, one end of which is fixedly connected to the inner wall of the front cylinder, and the other end of the spring is provided with a mounting block, which is fixedly connected to one end of the wheel bracket close to the oblique wedge block.

[0013] A further improvement is that the preservative sprayer includes a nozzle, which is fixedly connected to both sides of the wheel bracket, the nozzle input end is connected to the diversion branch pipe arranged in the front cylinder, and the diversion branch pipe is connected to the injection pipe arranged at the tail end of the rear cylinder away from the nozzle.

[0014] Further improvements are: the drive assembly includes a ring gear, a second motor and a motor gear, the mounting end of the second motor is fixedly connected to the outside of the rear cylinder, the output end of the second motor is fixedly connected to the motor gear, the ring gear is sleeved on the outside of the rear cylinder, the ring gear is fixedly connected to the cleaning ring, and the motor gear is meshed with the ring gear.

[0015] The beneficial effects of the utility model are:

[0016] The anti-corrosion device adopts a self-propelled design and can spray anti-corrosion agent onto the inner wall of the pipe while moving. When the driving component controls the rotation of the cleaning ring, the cleaning ring will smear the anti-corrosion agent sprayed on the inner wall of the pipe through the scraper during rotation, so that the anti-corrosion agent can be evenly covered on the inner wall of the pipe, thereby improving the anti-corrosion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 It is a structural diagram of the rear cylinder in the utility model.

[0019] Figure 2It is a structural diagram of the cleaning ring in the utility model.

[0020] Figure 3 It is a structural diagram of the interior of the front cylinder in the present invention.

[0021] Among them: 1. Front cylinder; 2. Electric push rod; 3. Rear cylinder; 4. Wheel bracket; 5. Guide wheel; 6. Nozzle; 7. First motor; 8. Diversion branch pipe; 9. Cleaning ring; 10. Ring gear; 11. Second motor; 12. Motor gear; 13. Scraper; 14. Liquid injection pipe; 15. Slot; 16. Wedge block; 17. Inclined surface; 18. Mounting block; 19. Spring. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] according to Figure 1 、 2 As shown in FIG3 , this embodiment provides a natural gas pipeline anti-corrosion device, comprising a front tube 1 and a rear tube 3 , wherein the rear tube 3 is fixedly connected to the rear end of the front tube 1 ;

[0024] A plurality of slots 15 are provided on the outside of the front tube 1, each of which is provided with a travel wheel mechanism, which is slidably connected to the slot 15, and a push rod assembly is provided inside the front tube 1 for pushing each travel wheel mechanism to open synchronously;

[0025] The front cylinder 1 is placed into a natural gas pipeline requiring corrosion protection. The push assembly pushes the individual travel wheels to open synchronously, allowing them to contact the inner wall of the pipeline and move forward and backward along it. The travel wheels' opening distance is adjustable, accommodating pipelines of varying sizes and offering a wide range of applications.

[0026] Each traveling wheel mechanism is equipped with an anti-corrosion sprayer;

[0027] When the front tube 1 moves forward in the pipeline, the anti-corrosion agent sprayer will continuously spray the anti-corrosion agent on the inner wall of the pipeline.

[0028] A cleaning ring 9 is sleeved on the outside of the rear cylinder 3 and is rotatably connected to the rear cylinder 3 . A plurality of scrapers 13 are provided on the outer edge of the cleaning ring 9 . A driving assembly for controlling the rotation of the cleaning ring 9 is provided on the outside of the rear cylinder 3 .

[0029] The driving assembly controls the cleaning ring 9 to rotate. During the rotation, the cleaning ring 9 smears the anti-corrosion agent sprayed on the inner wall of the pipeline through the scraper 13, so that the anti-corrosion agent can evenly cover the inner wall of the pipeline, thereby improving the anti-corrosion effect.

[0030] It should be further explained that at least three running wheel mechanisms are provided on the outside of the front tube 1, and each running wheel mechanism is evenly arranged around the axis of the front tube 1. The purpose of this design is that when the running wheel mechanism is in the extended state, it can prop up the front tube 1 from the inside of the pipe and position it in the center of the pipe. When the running wheel mechanism moves along the inner wall of the pipe, the front tube 1 will not tilt.

[0031] For the specific structure of the traveling wheel mechanism, please refer to the following description.

[0032] The walking wheel mechanism includes a wheel bracket 4 and a guide wheel 5. The guide wheel 5 is placed on the outside of the front cylinder 1. One end of the wheel bracket 4 is rotatably connected to the guide wheel 5. The other end of the wheel bracket 4 is inserted into the slot 15 and slidably connected to the slot 15. A first motor 7 for controlling the rotation of the guide wheel 5 is provided on the outside of the wheel bracket 4.

[0033] The working principle of the walking wheel mechanism is:

[0034] The mounting end of the first motor 7 is fixed to the wheel bracket 4, and the output end of the first motor 7 is fixed to the guide wheel 5 through the rotating shaft. When the guide wheels 5 around the front cylinder 1 are in close contact with the inner wall of the pipe, the first motor 7 will drive the guide wheel 5 to rotate. During the rotation, the guide wheel 5 pushes the front cylinder 1 forward in the pipe toward the other end of the pipe through the friction between the guide wheel 5 and the inner wall of the pipe.

[0035] For the specific structure of the push rod assembly, please refer to the following description.

[0036] The push rod assembly includes an electric push rod 2, the mounting end of the electric push rod 2 is fixedly connected to the head end of the front cylinder 1, the output end of the electric push rod 2 penetrates into the front cylinder 1 and is fixedly connected to the inclined wedge block 16 provided in the front cylinder 1, the inclined wedge block 16 is placed between each wheel bracket 4, and the wheel bracket 4 is provided with an inclined surface 17 at one end away from the guide wheel 5. The inclined surface 17 is slidably matched with the inclined wedge block 16, and a spring structure is provided on the inner side of the front cylinder 1 for pushing each wheel bracket 4 to continuously contact the inclined wedge block 16.

[0037] The working principle of the push rod assembly is:

[0038] The angled wedge 16 and the wheel brackets 4 form an angled wedge mechanism. The electric push rod 2 pushes the angled wedge 16 between the wheel brackets 4. The angled wedge 16 slides along the inclined surface 17 on the side of the wheel bracket 4. The positive pressure at the contact surface between the wheel bracket 4 and the angled wedge 16 increases, and the angled wedge 16 pushes each wheel bracket 4 to open outward from the front tube 1, causing the travel wheel mechanism to contact the inner wall of the pipe. When the electric push rod 2 pulls the angled wedge 16 in the opposite direction, the positive pressure at the contact surface between the angled wedge 16 and the wheel bracket 4 decreases, and the spring structure pushes the wheel brackets 4 together, and the travel wheel mechanism no longer contacts the inner wall of the pipe.

[0039] It is worth further explaining that the spring structure includes a spring 19, one end of which is fixedly connected to the inner wall of the front cylinder 1. The other end of the spring 19 is provided with a mounting block 18, which is fixedly connected to the end of the wheel bracket 4 near the angled wedge 16. The spring 19 pushes the wheel bracket 4, so that the inclined surface 17 on the wheel bracket 4 remains in close contact with the angled wedge 16.

[0040] About preservative sprayer:

[0041] The preservative sprayer includes nozzles 6, which are fixedly connected to both sides of the wheel bracket 4. The input end of the nozzle 6 is connected to the diversion branch pipe 8 located in the front barrel 1. The end of the diversion branch pipe 8, away from the nozzle 6, is connected to the injection pipe 14 located at the end of the rear barrel 3. An external pump pumps the preservative liquid into the injection pipe 14, which then flows through the diversion branch pipes 8 into each nozzle 6. The guide wheel 5 moves along the inner wall of the pipe, and the nozzle 6 sprays the protective liquid on the inner wall of the pipe.

[0042] For the specific structure of the drive component, please refer to the following description.

[0043] The driving assembly includes a ring gear 10, a second motor 11 and a motor gear 12. The mounting end of the second motor 11 is fixedly connected to the outside of the rear cylinder 3, the output end of the second motor 11 is fixedly connected to the motor gear 12, the ring gear 10 is sleeved on the outside of the rear cylinder 3, the ring gear 10 is fixedly connected to the cleaning ring 9, and the motor gear 12 is engaged with the ring gear 10.

[0044] The working principle of the drive component is:

[0045] The ring gear 10 sleeved on the outside of the rear cylinder 3 is rotatably connected to the rear cylinder 3 and fixedly connected to the cleaning ring 9. When the second motor 11 drives the motor gear 12 to rotate, the motor gear 12 will drive the ring gear 10 to rotate by engaging with the ring gear 10. Since the ring gear 10 is fixed to the cleaning ring 9, when the ring gear 10 rotates, the ring gear 10 will also rotate.

[0046] How this application works:

[0047] The front barrel 1 is placed into the natural gas pipeline requiring corrosion protection. The driving assembly pushes the various running wheel mechanisms to open synchronously, bringing them into contact with the inner wall of the pipeline and enabling them to advance and retract along the inner wall. The opening distance of the running wheel mechanisms is adjustable to accommodate pipelines of varying sizes. As the front barrel 1 advances within the pipeline, the preservative sprayer continuously sprays the inner wall with preservative. The drive assembly controls the rotation of the cleaning ring 9, which, through its scraper 13, spreads the preservative applied to the inner wall of the pipeline, ensuring even coverage and enhancing the corrosion protection effect.

[0048] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A natural gas pipeline anti-corrosion device, comprising a front cylinder (1) and a rear cylinder (3), wherein the rear cylinder (3) is fixedly connected to the tail end of the front cylinder (1), characterized in that: A plurality of slots (15) are provided on the outside of the front tube (1), each of the slots (15) is provided with a walking wheel mechanism, the walking wheel mechanism is slidably connected to the slot (15), and a push rod assembly for pushing each of the walking wheel mechanisms to open synchronously is provided inside the front tube (1); Each of the travel wheel mechanisms is provided with an antiseptic sprayer; A cleaning ring (9) is sleeved on the outside of the rear cylinder (3), and the cleaning ring (9) is rotatably connected to the rear cylinder (3). A plurality of scrapers (13) are provided on the outer edge of the cleaning ring (9), and a driving assembly for controlling the rotation of the cleaning ring (9) is provided on the outside of the rear cylinder (3).

2. A natural gas pipeline anti-corrosion device according to claim 1, characterized in that: At least three running wheel mechanisms are provided on the outside of the front cylinder (1), and the running wheel mechanisms are evenly arranged around the axis of the front cylinder (1).

3. A natural gas pipeline anti-corrosion device according to claim 2, characterized in that: The walking wheel mechanism comprises a wheel bracket (4) and a guide wheel (5), wherein the guide wheel (5) is placed outside the front cylinder (1), one end of the wheel bracket (4) is rotatably connected to the guide wheel (5), and the other end of the wheel bracket (4) is inserted into the slot (15) and slidably connected to the slot (15), and a first motor (7) for controlling the rotation of the guide wheel (5) is provided outside the wheel bracket (4).

4. A natural gas pipeline anti-corrosion device according to claim 3, characterized in that: The push rod assembly includes an electric push rod (2), the mounting end of the electric push rod (2) is fixedly connected to the head end of the front tube (1), the output end of the electric push rod (2) penetrates into the front tube (1) and is fixedly connected to the inclined wedge block (16) provided in the front tube (1), the inclined wedge block (16) is placed between each of the wheel brackets (4), and an inclined surface (17) is provided at one end of the wheel bracket (4) away from the guide wheel (5), and the inclined surface (17) is slidably matched with the inclined wedge block (16), and a spring structure is provided on the inner side of the front tube (1) for pushing each of the wheel brackets (4) to continuously contact the inclined wedge block (16).

5. A natural gas pipeline anti-corrosion device according to claim 4, characterized in that The spring structure comprises a spring (19), one end of the spring (19) is fixedly connected to the inner wall of the front cylinder (1), and the other end of the spring (19) is provided with a mounting block (18), and the mounting block (18) is fixedly connected to one end of the wheel bracket (4) close to the inclined wedge block (16).

6. The natural gas pipeline anti-corrosion device according to claim 3, characterized in that: The preservative sprayer comprises a nozzle (6), the nozzle (6) being fixedly connected to both sides of the wheel bracket (4), the input end of the nozzle (6) being communicated with a diversion branch pipe (8) provided in the front barrel (1), and the end of the diversion branch pipe (8) away from the nozzle (6) being communicated with a liquid injection pipe (14) provided at the tail end of the rear barrel (3).

7. The natural gas pipeline anti-corrosion device according to claim 1, characterized in that: The driving assembly comprises a ring gear (10), a second motor (11) and a motor gear (12); the mounting end of the second motor (11) is fixedly connected to the outside of the rear cylinder (3); the output end of the second motor (11) is fixedly connected to the motor gear (12); the ring gear (10) is sleeved on the outside of the rear cylinder (3); the ring gear (10) is fixedly connected to the cleaning ring (9); and the motor gear (12) is meshed with the ring gear (10).

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