Submarine pipeline cleaning device

Abstract

The utility model relates to a submarine pipeline cleaning device which comprises an impurity removal scraper, a guiding and positioning device, a circumferential rotation flushing device, a pipe wall cleaning device and an advancing driving device. The guiding and positioning device is used for fixing the front end of the submarine pipeline cleaning device and guiding the submarine pipeline cleaning device to advance, the circumferential rotating flushing device flushes the pipe wall, and the pipe wall cleaning device conducts final cleaning on the pipe wall. The advancing driving device is arranged at the rear end of the submarine pipeline cleaning device and provides power for driving the submarine pipeline cleaning device to advance. The subsea pipeline wall cleaning device has the effect of improving the subsea pipeline wall cleaning efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of marine equipment, and in particular to a submarine pipeline cleaning device. Background Art

[0002] At present, submarine pipelines are pipelines for transporting oil, gas and chemicals, which are composed of steel pipes, insulation layers, counterweight layers, heating systems and anti-corrosion systems. They are used to connect platforms, single points and onshore oil depots. After the submarine pipelines are put into operation, they are not restricted by water depth and terrain conditions, and can continuously transport oil and gas with high efficiency. The technical conditions for the use of submarine pipelines are the same as those on land. Due to the difficulty in repair, the properties of crude oil should be considered during the design, and the direction, specifications and structure of the pipeline should be reasonably selected according to the weather, sea conditions, terrain, geology and other information around the pipeline to ensure safe use.

[0003] Since submarine pipelines are mainly fixed on the seabed, over time, sludge, microorganisms, seaweed, etc. in the seabed will be adsorbed on the surface of the pipeline, causing corrosion to the pipeline surface, thus affecting the service life of the pipeline, so it is necessary to clean it. The existing device does not clean it thoroughly and the cleaning efficiency is low. Utility Model Content

[0004] In order to improve the cleaning efficiency, the present application provides a submarine pipeline cleaning device

[0005] The present application provides a submarine pipeline cleaning device that adopts the following technical solution:

[0006] A submarine pipeline cleaning device comprises a scraper for removing impurities, a guide and positioning device, a circumferentially rotating flushing device, a pipe wall cleaning device and a travel drive device, wherein the scraper for removing impurities is used for preliminarily removing impurities from the pipe wall to remove large-volume adhesions on the pipe wall, the guide and positioning device is used for fixing the front end of the submarine pipeline cleaning device and guiding the submarine pipeline cleaning device to travel, the circumferentially rotating flushing device flushes the pipe wall, the pipe wall cleaning device performs final cleaning on the pipe wall, and the travel drive device is arranged at the rear end of the submarine pipeline cleaning device and provides power for driving the travel.

[0007] By adopting the above technical solution, the scraper is used to preliminarily remove large volumes of sediment on the pipe wall to ensure the cleanliness of the pipe surface. The guide positioning device fixes the front end of the device and guides its travel direction so that the cleaning device can move correctly along the pipe. The circumferential rotating flushing device rotates to flush the pipe wall to remove dirt and sediment attached to the pipe wall to keep the pipe unobstructed. The pipe wall cleaning device performs the final cleaning of the pipe wall to ensure the smooth surface of the inner wall of the pipe, reduce resistance, and improve the fluid transportation efficiency. The travel drive device is located at the rear end of the cleaning device and provides power to enable the cleaning device to move in the pipe.

[0008] Optionally, the scraper for removing impurities has a certain thickness, is in an arc shape with an opening facing forward, and is in a ring shape that matches the tube wall.

[0009] By adopting the above technical solution, the scraper has a certain thickness to ensure that the scraper has sufficient strength and durability, and can effectively remove the adhesion on the pipe wall without being easily deformed or damaged. The arc-shaped design of the scraper with the opening facing forward helps to effectively scrape the material on the pipe wall and push it to the front of the pipe, ensuring the efficient cleaning operation. The annular design of the scraper enables it to completely match the pipe wall, minimizing the possible scraping or omission during the cleaning process, ensuring the comprehensiveness and thoroughness of the pipeline cleaning.

[0010] Optionally, the guiding and positioning device includes a walking wheel bracket, a walking wheel, a walking wheel support ring and a first connecting plate, the first connecting plate connects the debris removal scraper and the walking wheel bracket, the walking wheel bracket is annular, the number of the walking wheel support rings is several and are arranged on the walking wheel bracket facing the pipe wall, the walking wheels are arranged on the walking wheel support ring and correspond to the number of the walking wheel support rings, and the walking wheels are in contact with the surface of the pipe wall.

[0011] By adopting the above technical solution, the walking wheel bracket is an annular structure that supports the movement of the entire guiding and positioning device. The first walking wheel connects the scraper for removing impurities and the walking wheel bracket, and plays a role of fixing and supporting. The walking wheel support ring is fixed on the walking wheel bracket, facing the pipe wall. The number of these support rings can be determined as needed to provide sufficient support and stability. The walking wheels are located on the walking wheel support ring, and the number corresponds to the support ring. These walking wheels fit against the surface of the pipe wall, and the device moves in the pipeline by rotation. The first connecting plate connects the scraper for removing impurities and the walking wheel bracket, and plays a role of connecting and supporting, ensuring that the guiding and positioning device can be firmly fixed at the front end of the cleaning device.

[0012] Optionally, the circumferentially rotating flushing device includes a fixed disk, a rotating disk, a limiting ring groove, a limiting ring block and a second connecting plate, the second connecting plate connects the walking wheel bracket and the fixed disk, the rotating disk is rotatably connected to the fixed disk, the limiting ring groove is provided on the fixed disk, the limiting ring block is provided on the rotating disk, the limiting ring block is cooperated and embedded in the limiting ring groove, and the rotating disk can rotate circumferentially on the fixed disk.

[0013] By adopting the above technical solution, the fixed disk is used to support and fix other components. The second connecting plate connects the walking wheel bracket and the fixed disk to ensure the stability of the device. The rotating disk is connected to the fixed disk and can rotate circumferentially on the fixed disk. The rotating disk is responsible for carrying and rotating other components of the circumferential rotating flushing device. A limiting ring groove is provided on the fixed disk to limit the rotation range of the rotating disk. The limiting ring block is embedded in the rotating disk and cooperates with the limiting ring groove to ensure that the circumferential rotation of the rotating disk on the fixed disk is limited to avoid exceeding the rotation range. The second connecting plate connects the walking wheel bracket and the fixed disk, plays a role of connection and support, and ensures that the circumferential rotating flushing device is tightly combined with the guide positioning device and can operate stably.

[0014] Optionally, the circumferentially rotating flushing device further includes a plurality of positioning rotating wheels, which are distributed in an array on the fixed disk, and the rotating disk is located between the positioning rotating wheels.

[0015] By adopting the above technical solution, the positioning rotating wheel provides stable support and positioning, ensuring that the rotating disk can remain stable and accurate during rotation.

[0016] Optionally, the circumferentially rotating flushing device also includes a ring gear, a motor assembly and a driving gear. The rotation axis of the rotating disk is perpendicular to its own end face. The ring gear is arranged on the circumferential surface of the rotating disk. The motor assembly is arranged on the fixed disk. The driving gear is arranged on the motor assembly. The driving gear and the ring gear are meshed with each other. The motor assembly can drive the rotating disk to rotate circumferentially on the fixed disk.

[0017] By adopting the above technical solution, the ring gear is located on the circumferential surface of the rotating disk and is used to transmit the driving force. The motor assembly is arranged on the fixed disk to provide the driving force. The motor assembly can drive the driving gear to rotate, thereby rotating the ring gear, and then realizing the circumferential rotation of the rotating disk on the fixed disk. The driving gear is arranged on the motor assembly and meshes with the ring gear. When the motor assembly is started, the driving gear transmits power to the ring gear, so that the rotating disk rotates circumferentially on the fixed disk.

[0018] Optionally, the circumferentially rotating flushing device also includes a nozzle fixing seat and a high-pressure water jet nozzle, the number of the nozzle fixing seats is several and distributed in a circular array on the rotating disk, the high-pressure water jet nozzles are arranged on the nozzle fixing seats and the number corresponds to the number of the nozzle fixing seats, and the high-pressure water jet nozzles face the pipe wall.

[0019] By adopting the above technical solution, the nozzle holder is used to fix the high-pressure water jet nozzle so that it can stably spray water to clean the pipe wall. The high-pressure water jet nozzle is responsible for spraying high-pressure water to wash away dirt and sediment on the pipe wall. The nozzle is facing the pipe wall to ensure that the water flow can effectively clean the pipe surface.

[0020] Optionally, the tube wall cleaning device includes a tube wall cleaning bracket, bristles and a third connecting plate, the third connecting plate connects the fixed plate and the tube wall cleaning bracket, the bristles are arranged on the tube wall cleaning bracket and the bristles touch the tube wall.

[0021] By adopting the above technical solution, the pipe wall cleaning bracket is used to fix and support the bristles. The position of the pipe wall cleaning bracket is connected to the fixed plate by the third connecting plate to ensure the stability of the cleaning device. The bristles are located on the pipe wall cleaning bracket and are used to clean the inner wall of the pipe. The design and material of the bristles can effectively remove dirt and sediment on the inner wall of the pipe. When the bristles touch the pipe wall, the inner wall of the pipe can be thoroughly cleaned to ensure a smooth and clean surface.

[0022] Optionally, the travel drive device includes a travel body, a travel motor, a travel gear, a toothed belt and a connecting rod, the connecting rod connects the travel body and the pipe wall cleaning bracket, the travel gear is arranged in the travel body, the number of the travel gears is two, the toothed belt is meshed with the outer periphery of the travel gear, the travel motor is drivingly connected to one of the travel gears, and the outer surface of the toothed belt is in contact with the pipe wall.

[0023] By adopting the above technical solution, the traveling body is the main structure of the entire traveling device, which is used to support and fix other components. The connecting rod connects the traveling body and the pipe wall cleaning bracket to ensure that the cleaning device can clean along the inner wall of the pipe as the traveling device moves. The traveling motor drives the motor component of the traveling device to provide power. There are two traveling gears located in the traveling body. The traveling gear is connected to the traveling motor, receives the power transmitted by the motor, and transmits the power to the toothed belt. The toothed belt meshes with the outer periphery of the traveling gear and is a key component for transmitting power. The outer surface of the toothed belt contacts the pipe wall. When the toothed belt moves, the pipe wall cleaning bracket moves accordingly to clean the inner wall of the pipe.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The scraper for removing impurities is used to preliminarily remove large volumes of sticky deposits on the pipe wall to ensure that the pipe surface is clean. The guide and positioning device fixes the front end of the device and guides its travel direction so that the cleaning device can move correctly along the pipe. The circumferential rotating flushing device rotates to flush the pipe wall to remove dirt and sediment attached to the pipe wall and keep the pipe unobstructed. The pipe wall cleaning device performs a final cleaning of the pipe wall to ensure that the inner wall surface of the pipe is smooth, reduce resistance, and improve fluid transportation efficiency. The travel drive device is located at the rear end of the cleaning device and provides power to enable the cleaning device to move in the pipe;

[0026] 2. The ring gear is located on the circumference of the rotating disk and is used to transmit the driving force. The motor assembly is located on the fixed disk to provide the driving force. The motor assembly can drive the driving gear to rotate, thereby rotating the ring gear, and then realizing the circumferential rotation of the rotating disk on the fixed disk. The driving gear is located on the motor assembly and meshes with the ring gear. When the motor assembly is started, the driving gear transmits power to the ring gear, causing the rotating disk to rotate circumferentially on the fixed disk;

[0027] 3. The traveling body is the main structure of the entire traveling device, which is used to support and fix other components. The connecting rod connects the traveling body and the pipe wall cleaning bracket to ensure that the cleaning device can clean along the inner wall of the pipe as the traveling device moves. The traveling motor drives the motor component of the traveling device to provide power. There are two traveling gears located in the traveling body. The traveling gear is connected to the traveling motor, receives the power transmitted by the motor, and transmits the power to the toothed belt. The toothed belt meshes with the outer periphery of the traveling gear and is a key component for transmitting power. The outer surface of the toothed belt contacts the pipe wall. When the toothed belt moves, the pipe wall cleaning bracket moves accordingly to clean the inner wall of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a submarine pipeline cleaning device according to an embodiment of the present application;

[0029] Figure 2 is a schematic side cross-sectional structural diagram of a submarine pipeline cleaning device according to an embodiment of the present application;

[0030] Figure 3 It is an exploded view of the submarine pipeline cleaning device according to an embodiment of the present application.

[0031] Explanation of the reference numerals: 1. scraper for removing impurities; 2. first connecting plate; 201. second connecting plate; 202. third connecting plate; 3. guiding and positioning device; 301. travel wheel bracket; 302. travel wheel; 303. travel wheel support ring; 4. circumferential rotating flushing device; 401. fixed disk; 402. rotating disk; 403. limiting ring groove; 404. limiting ring block; 405. positioning rotating wheel; 406. gear ring; 407. motor assembly; 408. driving gear; 5. pipe wall cleaning device; 501. pipe wall cleaning bracket; 502. bristles; 6. travel driving device; 601. travel body; 602. travel motor; 603. travel gear; 604. toothed belt; 605. connecting rod; 7. nozzle fixing seat; 8. high-pressure water jet nozzle. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The embodiment of the present application discloses a submarine pipeline cleaning device.

[0034] Reference Figure 1 The submarine pipeline cleaning device includes a scraper for removing impurities, a guide and positioning device, a circumferential rotating flushing device, a pipe wall cleaning device and a travel drive device. The scraper for removing impurities is used to preliminarily remove large volumes of sediment on the pipe wall, ensure the cleanliness of the pipe surface, and provide preparation for subsequent cleaning. The guide and positioning device fixes the front end of the cleaning device and guides its travel direction to ensure that the cleaning device can move correctly along the pipeline, avoiding the possibility of getting lost or deviating from the track in the submarine pipeline. Circumferential rotating flushing device: By rotating and flushing the pipe wall, dirt and sediment attached to the pipe wall are removed, the pipeline is kept unobstructed, the fluid transportation efficiency of the pipeline is improved, and the normal operation of the submarine pipeline is ensured. Pipe wall cleaning device: Final cleaning of the pipe wall to ensure a smooth inner wall surface of the pipeline, reduce resistance, and further improve the transportation efficiency and reliability of the pipeline. Travel drive device: Located at the rear end of the cleaning device, it provides power to enable the cleaning device to move in the pipeline to achieve coverage and cleaning of the entire pipeline.

[0035] Reference Figure 2 , the scraper has a certain thickness to ensure that the scraper has sufficient strength and durability. This enables the scraper to withstand the pressure and friction during the cleaning process and effectively remove the adhesion on the pipe wall without being easily deformed or damaged. The scraper adopts an arc-shaped design with an opening forward, which helps to effectively scrape the material on the pipe wall and push it to the front of the pipe. This design can ensure the efficient cleaning operation, so that the removed material can be smoothly moved to the front of the pipe without blocking the operation of the cleaning device. The scraper has a ring-shaped design that matches the pipe wall, which can minimize the possible scraping or omissions during the cleaning process. This design ensures that the scraper can fit completely with the pipe wall, thereby effectively removing dirt and sediment on the pipe surface and ensuring the comprehensiveness and thoroughness of the cleaning operation.

[0036] Reference Figure 2 and Figure 3 The guiding and positioning device includes a walking wheel bracket, a walking wheel, a walking wheel support ring and a first connecting plate. The walking wheel bracket is an annular structure, which supports the movement of the entire guiding and positioning device and provides a stable foundation so that the device can move smoothly in the pipeline. The first walking wheel connects the scraper for removing impurities and the walking wheel bracket, and plays a role of fixing and supporting. The walking wheel fits against the surface of the pipe wall and realizes the movement of the device in the pipe by rotating. The walking wheel support ring is fixed on the walking wheel bracket, facing the pipe wall, and is used to provide sufficient support and stability to ensure that the walking wheel can fit closely to the surface of the pipe wall. The first connecting plate connects the scraper for removing impurities and the walking wheel bracket, and plays a role of connecting and supporting, ensuring that the guiding and positioning device can be firmly fixed at the front end of the cleaning device, so that the cleaning device can accurately move along the pipe and clean the pipe wall.

[0037] Reference Figure 2 and Figure 3 The circumferential rotating flushing device includes a fixed disk, a rotating disk, a limiting ring groove, a limiting ring block and a second connecting plate. The fixed disk is used to support and fix other components to ensure the stability and reliability of the device. The second connecting plate connects the walking wheel bracket and the fixed disk, plays a role of connection and support, ensures that the device can run stably, and makes the circumferential rotating flushing device and the guide positioning device closely combined to ensure that the entire device can operate in a coordinated manner. The rotating disk is rotatably connected to the fixed disk and is responsible for carrying and rotating other components of the circumferential rotating flushing device. The rotating disk can rotate circumferentially on the fixed disk to achieve comprehensive flushing of the inner wall of the pipeline. The limiting ring groove is provided on the fixed disk, and the limiting ring block is provided on the rotating disk, which are matched and inlaid together to limit the rotation range of the rotating disk to avoid unnecessary failures or damage caused by exceeding the rotation range.

[0038] Reference Figure 2 and Figure 3 The circumferentially rotating flushing device also includes positioning rotating wheels. There are several positioning rotating wheels, which are distributed in an array on the fixed disk. Their function is to provide stable support and positioning to ensure that the rotating disk can remain stable and accurate during the rotation process. The rotating disk is located between these positioning rotating wheels, and by cooperating with them, the positioning and support of the rotating disk is achieved.

[0039] Reference Figure 2 and Figure 3 The circumferentially rotating flushing device also includes a gear ring, a motor assembly and a driving gear. The gear ring is located on the circumferential surface of the rotating disk and is used to transmit driving force. The motor assembly is disposed on the fixed disk to provide driving force. The driving gear is disposed on the motor assembly and meshes with the gear ring. When the motor assembly is started, the driving gear transmits power to the gear ring, causing the rotating disk to rotate circumferentially on the fixed disk. The motor assembly can start and drive the rotation of the driving gear, thereby transmitting power to the gear ring, causing the rotating disk to rotate circumferentially.

[0040] Reference Figure 2 and Figure 3 The circumferential rotating flushing device also includes a nozzle holder and a high-pressure water jet nozzle. There are several nozzle holders, which are distributed on the rotating disk in a circular array. The function of the nozzle holder is to fix the high-pressure water jet nozzle so that it can stably spray water to clean the pipe wall. The high-pressure water jet nozzle is arranged on the nozzle holder, and the number corresponds to the number of nozzle holders. The high-pressure water jet nozzle is responsible for spraying high-pressure water to flush dirt and sediment on the pipe wall. The nozzle faces the pipe wall to ensure that the water flow can effectively clean the pipe surface.

[0041] Reference Figure 2 and Figure 3The pipe wall cleaning device includes a pipe wall cleaning bracket, bristles and a third connecting plate. The pipe wall cleaning bracket is used to fix and support the bristles. The third connecting plate connects the pipe wall cleaning bracket and the fixed plate to ensure the stability of the cleaning device. The position of the pipe wall cleaning bracket is connected to the fixed plate by the third connecting plate, so that the cleaning device can be firmly fixed in the pipe without shaking or moving. The bristles are arranged on the pipe wall cleaning bracket for cleaning the inner wall of the pipe. The design and material of the bristles can effectively remove dirt and sediment on the inner wall of the pipe. When the bristles touch the pipe wall, the inner wall of the pipe can be thoroughly cleaned to ensure a smooth and clean surface.

[0042] Reference Figure 2 and Figure 3 The travel drive device includes a travel body, a travel motor, a travel gear, a toothed belt and a connecting rod. The travel body is the main structure of the entire travel device, which plays the role of supporting and fixing other components. The travel body is connected to the pipe wall cleaning bracket to ensure that the cleaning device can clean along the inner wall of the pipe as the travel device moves. The connecting rod connects the travel body and the pipe wall cleaning bracket to transmit power from the travel device to the cleaning device. The travel gear is located in the travel body, and there are two of them. The travel gear receives the power transmitted by the motor and transmits it to the toothed belt. The toothed belt meshes with the outer circumference of the travel gear and is a key component for transmitting power. The outer surface of the toothed belt contacts the pipe wall. When the toothed belt moves, the pipe wall cleaning bracket moves accordingly to clean the inner wall of the pipe. The travel motor provides driving force to drive the travel device to move. The travel motor is connected to one of the travel gears and transmits power through the travel gear.

[0043] The implementation principle of a submarine pipeline cleaning device in the embodiment of the present application is:

[0044] First, the cleaning device is lowered to the seabed and installed on the wall of the sea pipe. The travel drive device provides power to enable the cleaning device to travel in the pipeline. The debris removal scraper is responsible for the preliminary cleaning of large-volume sediments on the inner wall of the pipeline. Its arc design and the ring structure that matches the pipe wall ensure an effective scraping effect. The guide positioning device ensures that the cleaning device can travel correctly along the pipeline. The circumferential rotating flushing device starts working. The rotating disk is driven by the motor assembly and rotates circumferentially on the fixed disk. At the same time, the high-pressure water jet nozzle faces the pipe wall and sprays high-pressure water to thoroughly clean the dirt and sediment on the inner wall of the pipe. The pipe wall cleaning device starts working. The bristles fit the inner wall of the pipe and clean the inner wall of the pipe through the rotational motion, further removing dirt and sediment, ensuring that the surface of the pipe is smooth and clean, and completing the entire cleaning process.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A submarine pipeline cleaning device, characterized in that: include: A scraper (1) for removing impurities, a guide and positioning device (3), a circumferentially rotating flushing device (4), a pipe wall cleaning device (5) and a travel drive device (6), wherein the scraper (1) is used to perform preliminary impurity removal on the pipe wall to remove large volume sediment on the pipe wall, the guide and positioning device (3) is used to fix the front end of the submarine pipeline cleaning device and guide the submarine pipeline cleaning device to travel, the circumferentially rotating flushing device (4) flushes the pipe wall, the pipe wall cleaning device (5) performs final cleaning on the pipe wall, and the travel drive device (6) is arranged at the rear end of the submarine pipeline cleaning device and provides power for driving the travel.

2. A submarine pipeline cleaning device according to claim 1, characterized in that: The scraper (1) has a certain thickness, is in the shape of an arc with its opening facing forward, and is in the shape of a ring that matches the tube wall.

3. A submarine pipeline cleaning device according to claim 2, characterized in that: The guiding and positioning device (3) comprises a walking wheel bracket (301), walking wheels (302), a walking wheel support ring (303) and a first connecting plate (2); the first connecting plate (2) connects the impurity removing scraper (1) and the walking wheel bracket (301); the walking wheel bracket (301) is annular; the walking wheel support rings (303) are in a plurality and are arranged on the walking wheel bracket (301) facing the pipe wall; the walking wheels (302) are arranged on the walking wheel support rings (303) and correspond to the number of the walking wheel support rings (303); and the walking wheels (302) are in close contact with the pipe wall surface.

4. A submarine pipeline cleaning device according to claim 3, characterized in that: The circumferentially rotating flushing device comprises a fixed disk (401), a rotating disk (402), a limiting ring groove (403), a limiting ring block (404) and a second connecting plate (201), wherein the second connecting plate (201) is connected to the walking wheel bracket (301) and the fixed disk (401), the rotating disk (402) is rotatably connected to the fixed disk (401), the limiting ring groove (403) is provided on the fixed disk (401), the limiting ring block (404) is provided on the rotating disk (402), the limiting ring block (404) is fitted and embedded in the limiting ring groove (403), and the rotating disk (402) can rotate circumferentially on the fixed disk (401).

5. A submarine pipeline cleaning device according to claim 4, characterized in that: The circumferentially rotating flushing device (4) further comprises positioning rotating wheels (405), wherein the number of the positioning rotating wheels (405) is a plurality and they are distributed in an array on the fixed disk (401), and the rotating disk (402) is located between the positioning rotating wheels (405).

6. A submarine pipeline cleaning device according to claim 5, characterized in that: The circumferentially rotating flushing device (4) further comprises a ring gear (406), a motor assembly (407) and a driving gear (408); the rotation axis of the rotating disk (402) is perpendicular to its own end face; the ring gear (406) is arranged on the circumferential surface of the rotating disk (402); the motor assembly (407) is arranged on the fixed disk (401); the driving gear (408) is arranged on the motor assembly (407); the driving gear (408) and the ring gear (406) are meshed with each other; and the motor assembly (407) can drive the rotating disk (402) to rotate circumferentially on the fixed disk (401).

7. A submarine pipeline cleaning device according to claim 6, characterized in that: The circumferentially rotating flushing device (4) further comprises a nozzle fixing seat (7) and a high-pressure water jet nozzle (8); the nozzle fixing seats (7) are in a plurality and are distributed in a circular array on the rotating disk (402); the high-pressure water jet nozzle (8) is arranged on the nozzle fixing seats (7) and the number of the nozzle fixing seats (7) corresponds to the number of the nozzle fixing seats (7); and the high-pressure water jet nozzle (8) faces the pipe wall.

8. A submarine pipeline cleaning device according to claim 7, characterized in that: The tube wall cleaning device (5) comprises a tube wall cleaning bracket (501), bristles (502) and a third connecting plate (202); the third connecting plate (202) connects the fixed plate (401) and the tube wall cleaning bracket (501); the bristles (502) are arranged on the tube wall cleaning bracket (501) and the bristles touch the tube wall.

9. A submarine pipeline cleaning device according to claim 8, characterized in that: The travel drive device (6) comprises a travel body (601), a travel motor (602), a travel gear (603), a toothed belt (604) and a connecting rod (605); the connecting rod (605) connects the travel body (601) and the pipe wall cleaning bracket (501); the travel gear (603) is arranged in the travel body (601); there are two travel gears (603); the toothed belt (604) meshes with the outer circumference of the travel gear (603); the travel motor (602) is drivingly connected to one of the travel gears (603); and the outer surface of the toothed belt (604) contacts the pipe wall.

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