A mobile cleaning device for the inner wall of a petroleum pipeline

Abstract

The present invention relates to the technical field of oil pipeline cleaning, and discloses a mobile cleaning device for the inner wall of an oil pipeline, comprising: a main cylinder, an end cylinder is rotatably mounted on the outer side of the end of the main cylinder, a mobile bracket is fixed on the middle outer wall of the main cylinder, and a guide wheel is rotatably mounted on the end of the mobile bracket; and a cleaning bracket is movably mounted on the outer wall of the end of the end cylinder; and also comprises: a steering cylinder, which is movably mounted on the inner side of the end of the main cylinder and driven by a motor inside the main cylinder, and a guide cylinder is rotatably mounted on the outer side of the steering cylinder through a sealed bearing; a guide chamber and a confluence chamber are respectively arranged on the inner side wall and the outer side wall of the steering cylinder, and the confluence chamber is fixedly connected to the end cylinder. By introducing a high-pressure cleaning mixed solution, the cleaning device can realize a mobile cleaning operation inside the oil pipeline, and drive itself to move along the axis of the oil pipeline during the cleaning operation, so as to achieve the effect of a comprehensive cleaning operation.

Description

Technical Field

[0001] The invention relates to the technical field of oil pipeline cleaning, in particular to a mobile cleaning device for the inner wall of an oil pipeline. Background Art

[0002] Oil pipelines are important tools in oil processing and transportation. Depending on the purpose of their use, the size and model of the pipelines themselves also vary greatly. For example, oil pipelines used in oil extraction need to meet the requirements of pressure resistance, corrosion resistance and impact protection to avoid functional damage due to long-term use of crude oil and the impurities it carries. For pipelines used in oil processing operations, the petroleum substances they transport undergo preliminary or multiple processing, and their functional requirements for use will also be reduced simultaneously.

[0003] Existing oil pipelines all need to meet the basic fluid transportation effect, especially for the transportation of corrosive and adhesive substances such as oil. During the long-term use of oil pipelines, since oil is a mixed substance with complicated ingredients and high adhesiveness, the pipelines are prone to adhesion residues of internal substances during long-term use. When the pipelines are inspected and maintained, the pipelines that can still be used normally need to be cleaned to prevent the continuous increase of adhesive substances on the inner wall of the oil pipelines, causing the internal fluid of the pipeline to pass through the smaller inner diameter, thereby affecting the transportation of oil. At the same time, the accumulation of adhesive substances will also accelerate the overhead destructiveness of the oil pipelines;

[0004] In the cleaning of oil pipelines, a rotating structure is generally used to flush and wash the inner wall of the pipeline with a mixed cleaning solution. At the same time, due to the difference in thickness and length of the pipelines, a matching introduction and movement structure is generally set up to move the position of the pipeline cleaning, flushing and washing components to achieve a good cleaning process of the inner wall of the oil pipeline. However, when applied to the cleaning of the inner wall of a narrow and long oil pipeline, the setting of the narrow and long pipeline will cause the introduction and movement of the structure to be hindered, making it easy for the cleaning component as a whole to cause the omission of adhered materials on the inner wall of the pipeline during the cleaning operation, resulting in an incomplete cleaning operation and limitations in use.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original oil pipeline inner wall cleaning equipment. Summary of the invention

[0006] The object of the present invention is to provide a mobile cleaning device for the inner wall of an oil pipeline, so as to solve the problem that when the existing oil pipeline inner wall cleaning device is used for cleaning the inner wall of a narrow and long oil pipeline, the cleaning components as a whole are easily missed during the cleaning operation, resulting in incomplete cleaning operation and limited use.

[0007] To achieve the above object, the present invention provides the following technical solution: a mobile cleaning device for the inner wall of a petroleum pipeline, comprising:

[0008] The main cylinder body has an end cylinder rotatably mounted on the outer side of the end thereof, a movable bracket is fixed on the outer wall of the middle part of the main cylinder body, and a guide wheel is rotatably mounted on the end of the movable bracket; and a cleaning bracket is movably mounted through the outer wall of the end of the end cylinder, and a cleaning brush is hingedly mounted on the end of the cleaning bracket;

[0009] It also includes: a steering cylinder, which is movably mounted on the inner side of the end of the main cylinder body and driven by a motor inside the main cylinder body. A guide cylinder is rotatably mounted on the outer side of the steering cylinder through a sealed bearing. The guide cylinder is connected to the inside of the steering cylinder. A propulsion rod is movably mounted on the right side of the inside of the steering cylinder. The propulsion rod is used for the angle deflection drive of the cleaning bracket.

[0010] The diversion chamber and the confluence chamber are respectively arranged on the inner wall and the outer wall of the steering cylinder, and the confluence chamber is fixedly connected to the end cylinder, wherein the confluence chamber is communicated with the interior of the diversion cylinder through the diversion chamber, the diversion cylinder is connected to the interior of the diversion pipe on the main cylinder body, and the confluence chamber is connected with a liquid infusion pipe, which is used for liquid supply processing of the guide wheel and the cleaning brush. A water flow driving rotating component of the guide wheel is also arranged on the mobile bracket.

[0011] Preferably, the steering cylinder, the main cylinder body and the end cylinder are coaxially distributed laterally, wherein the rotation connection gaps between the main cylinder body and the end cylinder are sealed, and the middle section of the steering cylinder is located on the inner side of the connection gap between the main cylinder body and the end cylinder.

[0012] Preferably, the guide tube is configured as a whole as a double inner cavity with left and right layers, the left inner cavity of the guide tube is connected to the interior of the steering tube, and the right inner cavity of the guide tube is connected to the interior of the guide cavity, wherein the guide cavity and the interior of the steering cylinder are sealed and isolated from each other, and the left and right inner cavities of the guide tube are respectively connected to the double pipes inside the guide pipe.

[0013] Preferably, the propulsion rod and the steering cylinder form a transversely coaxial relative telescopic structure, and the left end of the propulsion rod forms a fitting relative telescopic structure with the inner wall of the steering cylinder through a sealing ring, and an elastic part is also provided at the connection. The outer wall of the right end of the propulsion rod is arranged in a strip-shaped serrated structure, and its strip-shaped serrated outer wall is engaged with the annular serrated structure at the head end of the cleaning bracket.

[0014] Preferably, the cleaning bracket is interpenetrating with the end tube, and an elastic sealing belt is provided at the interpenetrating portion between the end tube and the cleaning bracket to block the environment inside and outside the end tube.

[0015] Preferably, counterweights are installed on both sides of the cleaning brush at the hinged portion of the front end of the cleaning bracket to stabilize the balance of the cleaning brush, and a liquid outlet pipe communicating with the infusion pipeline is also provided on the cleaning brush.

[0016] Preferably, four movable brackets are arranged at equal angles on the outer wall of the main cylinder, and rolling balls are fixed at the ends of the two movable brackets on the front and rear sides.

[0017] Preferably, an elastic member is arranged inside the movable bracket, and the two movable brackets at the upper and lower positions are connected to the inside of the infusion pipeline, and the output shaft part of the movable bracket is arranged hollow inside;

[0018] The water flow driven rotating component includes a flow guide connector which is coaxially fixed through the end of the output shaft of the hollow part of the movable bracket. The middle part of the flow guide connector and the middle axis of the guide wheel are connected to each other by a sealed bearing and are through-type rotating installation. A liquid discharge nozzle is also arranged on the inner side of the guide wheel.

[0019] Preferably, the connection between the flow-guiding connector and the middle axis of the guide wheel is arranged as an annular structure, and the liquid discharge nozzle is connected with the movable bracket and the inside of the liquid infusion pipeline through the flow-guiding connector.

[0020] Preferably, the infusion pipeline is arranged in a "Y"-shaped structure, and a solenoid valve is also installed at the "Y"-shaped transfer node position of the infusion pipeline. At the same time, an energized slip ring is also provided at the rotating connection between the steering cylinder and the main cylinder body for controlling the solenoid valve.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the mobile cleaning device for the inner wall of the oil pipeline utilizes the introduction of a high-pressure cleaning mixed solution to realize the mobile cleaning operation of the cleaning device inside the oil pipeline, and drives itself to move along the axis of the oil pipeline during the cleaning operation, thereby achieving the effect of a comprehensive cleaning operation and improving the cleaning efficiency. The specific methods are as follows:

[0022] 1. When the motor drives the steering cylinder to rotate continuously, the steering cylinder can use the fixed connection between the confluence cavity and the end cylinder to realize the synchronous rotation of the end cylinder and the cleaning bracket and the cleaning brush thereon, so as to clean the inner wall of the oil pipeline. The guide cylinder movably and rotatably installed on the outer side of the steering cylinder is connected to the operation, and can be connected to the external high-pressure fluid. Under the hydraulic action of the fluid, the propulsion rod is hydraulically pushed. By using the meshing transmission between the propulsion rod and the cleaning bracket, the deployment angle of the cleaning bracket and the positioning and installation position of the cleaning brush can be changed, so as to realize the cleaning of the inner wall of oil pipelines with different inner diameters, and the operation is convenient;

[0023] Furthermore, the guide tube is provided with a double-chamber structure. When the angle orientation of the cleaning bracket is changed by hydraulic pressure, a pressurized cleaning mixed solution can be connected to the outside. When the cleaning bracket and the cleaning brush clean the inner wall of the oil pipeline, the inner wall of the oil pipeline and the cleaning brush are flushed, thereby accelerating the cleaning efficiency of the oil pipeline, and also reducing the impurities remaining on the cleaning brush, thereby improving the stability of continuous cleaning.

[0024] 2. Use high-pressure cleaning solution to clean the inner wall of the oil pipeline. At the same time, the high-pressure solution is transported through the mobile bracket and discharged from the discharge nozzle on the inner wall of the guide wheel under the transmission of the diversion connector, forming a high-pressure biased impact external force, so that the guide wheel forms a stable rotation effect during continuous use. By using the rotation and damping friction external force, the guide wheel drives the overall movement of the equipment, so that the equipment can move automatically when cleaning the inner wall of the pipeline;

[0025] Furthermore, the auxiliary linkage brush acts to decompose and remove sticky substances adhered to the outer wall of the continuously rolling guide wheel, so that the guide wheel maintains its rotational external force and rolling friction at the contact position during continuous rotation, thereby achieving self-moving and efficient cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the front cross-section structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the front structure of the inner side of the end tube of the present invention;

[0030] Figure 5 It is a schematic diagram of the internal side structure of the end tube of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the steering cylinder of the present invention;

[0032] Figure 7 This is a schematic diagram of the installation structure of the propulsion rod of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the mobile support of the present invention;

[0034] Fig. 9 This is a schematic diagram of the guide wheel installation structure of the present invention;

[0035] Fig.10 This is a structural diagram of Embodiment 3 of the present invention;

[0036] Fig.11 Schematic diagram of the switching structure of the infusion pipeline in the third embodiment of the present invention.

[0037] In the figure: 1. main cylinder; 101. diversion pipe; 2. end cylinder; 3. movable bracket; 4. guide wheel; 401. diversion connector; 402. discharge nozzle; 403. linkage brush; 5. cleaning bracket; 6. cleaning brush; 7. steering cylinder; 8. diversion cylinder; 9. propulsion rod; 10. diversion chamber; 11. confluence chamber; 12. infusion pipeline; 13. rolling ball; 14. solenoid valve. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a mobile cleaning device for the inner wall of a petroleum pipeline, comprising:

[0040] A main cylinder body 1, an end cylinder 2 is rotatably mounted on the outer side of the end thereof, a movable bracket 3 is fixed on the outer wall of the middle part of the main cylinder body 1, and a guide wheel 4 is rotatably mounted on the end of the movable bracket 3; and a cleaning bracket 5 is movably mounted through the outer wall of the end of the end cylinder 2, and a cleaning brush 6 is hingedly mounted on the end of the cleaning bracket 5;

[0041] It also includes: a steering cylinder 7, which is movably installed on the inner side of the end of the main cylinder body 1 and driven by the motor inside the main cylinder body 1. A guide cylinder 8 is rotatably installed on the outer side of the steering cylinder 7 through a sealed bearing. The guide cylinder 8 is connected to the inside of the steering cylinder 7. A propulsion rod 9 is also movably installed on the right side of the inside of the steering cylinder 7. The propulsion rod 9 is used for the angular deflection drive of the cleaning bracket 5; the steering cylinder 7, the main cylinder body 1 and the end cylinder 2 are coaxially distributed laterally, wherein the rotating connection gap between the main cylinder body 1 and the end cylinder 2 is sealed, and the middle section of the steering cylinder 7 is located on the inner side of the connection gap between the main cylinder body 1 and the end cylinder 2; the guide cylinder 8 is arranged as a double inner cavity with left and right layers as a whole, and the left inner cavity of the guide cylinder 8 is connected to the inside of the steering cylinder 7. The right inner cavity of the cylinder 8 is connected with the inside of the diversion cavity 10, wherein the diversion cavity 10 and the inside of the steering cylinder 7 are sealed and blocked with each other, and the left and right inner cavities of the diversion cylinder 8 are respectively connected with the double pipes inside the diversion pipe 101; the propulsion rod 9 and the steering cylinder 7 form a transversely coaxial relative telescopic structure, and the left end of the propulsion rod 9 forms a fitting relative telescopic structure with the inner wall of the steering cylinder 7 through a sealing ring, and an elastic member is also provided at the connection, and the outer wall of the right end of the propulsion rod 9 is arranged in a strip-shaped serrated structure, and its strip-shaped serrated outer wall is meshed with the annular serrated structure of the head end of the cleaning bracket 5; the cleaning bracket 5 and the end cylinder 2 are arranged through, and an elastic sealing belt is provided at the penetration of the end cylinder 2 and the cleaning bracket 5 to block the internal and external environment of the end cylinder 2;

[0042] By adopting the above technical scheme, when cleaning the inner wall of the oil pipeline, due to the difference in the inner diameters of different oil pipelines, it is necessary to change the cleaning bracket 5 and the cleaning brush 6 thereon, and introduce the pressurized fluid through the guide pipe 101, and the fluid passes through the inner cavity on the left side of the guide cylinder 8 and the hollow structure on the steering cylinder 7, and is introduced into the interior of the steering cylinder 7. The interior of the steering cylinder 7 forms hydraulic pressure, and the hydraulic pressure drives the propulsion rod 9 to move axially, so that the propulsion rod 9 moves axially and meshes with the annular serrated structure at the head end of the cleaning bracket 5, so that the cleaning bracket 5 rotates, so that the cleaning bracket 5 rotates and the cleaning brush 6 at the end thereof moves synchronously, and can directly fit the inner wall of the oil pipeline, so as to achieve the cleaning effect of the inner wall of the oil pipeline. At the same time, the rotation process of the cleaning bracket 5 can also be synchronously rotated during the process of cleaning the inner wall of the oil pipeline, corresponding to the thickness of impurities adhering to different areas of the inner wall of the oil pipeline, so that the cleaning brush 6 at the end of the cleaning bracket 5 can continue to fit the inner wall of the oil pipeline more forcefully, so as to achieve efficient cleaning of the inner wall of the oil pipeline;

[0043] Another example Figure 3-Figure 6As shown, the diversion chamber 10 and the confluence chamber 11 are respectively arranged on the inner wall and the outer wall of the steering cylinder 7, and the confluence chamber 11 is fixedly connected to the end cylinder 2, wherein the confluence chamber 11 is communicated with the inside of the diversion cylinder 8 through the diversion chamber 10, and the diversion cylinder 8 is connected to the inside of the diversion pipe 101 on the main cylinder body 1, and the confluence chamber 11 is connected with the infusion pipe 12, and the infusion pipe 12 is used for the liquid supply processing of the guide wheel 4 and the cleaning brush 6; counterweights are installed on the left and right sides of the cleaning brush 6 at the hinge of the head end of the cleaning bracket 5 to stabilize the balance state of the cleaning brush 6, and the cleaning brush 6 is also provided with a liquid outlet pipe that is connected with the infusion pipe 12;

[0044] In the above technical scheme, the external pressurized cleaning mixed solution is introduced into the confluence cavity 11 and the infusion pipe 12 through the switching of the inner cavity on the right side of the guide cylinder 8. During this process, the steering cylinder 7 is driven by the motor to perform reciprocating rotation, clockwise rotation and counterclockwise rotation alternately. Its reciprocating rotation and swinging action prevents the infusion pipe 12 from twisting and breaking during continuous rotation, so that the cleaning brush 6 cleans the inner wall of the oil pipeline, and also continuously introduces the cleaning solution discharged from the infusion pipe 12 to quickly decompose and clean the impurities adhering to the inner wall of the oil pipeline; at the same time, the infusion pipe 12 can also discharge the high-pressure solution into the movable bracket 3, and the water flow of the guide wheel 4 also provided on the movable bracket 3 drives the rotating component to drive the guide wheel 4 to move, so as to achieve the cleaning of the inner wall of the oil pipeline and the self-moving treatment of the equipment at the same time.

[0045] Embodiment 2: Based on Embodiment 1, the present invention further provides a water flow driven rotating component of the guide wheel 4, and the specific contents are as follows:

[0046] like Figure 8-Figure 9 As shown, an elastic member is arranged inside the movable bracket 3, and at the same time, the two movable brackets 3 at the upper and lower positions are connected with the inside of the infusion pipeline 12, and the output shaft part of the movable bracket 3 is arranged hollow inside; the water flow driven rotating component includes a flow guiding connector 401 which is coaxially connected and fixed at the end of the output shaft of the hollow part of the movable bracket 3, and the middle part of the flow guiding connector 401 is connected with the middle axis of the guide wheel 4 by a sealed bearing for through-type rotation installation, and a drainage nozzle 402 is also arranged on the inner side of the guide wheel 4; the connection between the flow guiding connector 401 and the middle axis of the guide wheel 4 is arranged as an annular structure, and the drainage nozzle 402 is connected with the movable bracket 3 and the infusion pipeline 12 through the flow guiding connector 401; the infusion pipeline 12 is arranged in a "Y"-shaped structure, and a solenoid valve 14 is also installed at the "Y"-shaped transfer node position of the infusion pipeline 12, and an energized slip ring is also arranged at the rotation connection between the steering cylinder 7 and the main cylinder body 1 for controlling the solenoid valve 14;

[0047] The electromagnetic valve 14 can selectively control the guided flow of the cleaning mixed solution in the infusion pipeline 12. When the cleaning mixed solution in the infusion pipeline 12 is introduced into the movable bracket 3, the cleaning mixed solution is introduced into the guide connector 401 and discharged from the discharge nozzle 402 on the guide wheel 4. The high-pressure solution discharged from the discharge nozzle 402 forms a centrifugal tangential pushing external force, so that the guide wheel 4 is continuously driven to rotate, and the rolling friction is used to achieve the self-movement effect of the guide wheel 4 fitting and squeezing the inner wall of the oil pipeline, driving the cleaning equipment to perform the cleaning operation, thereby improving the cleaning operation efficiency.

[0048] Embodiment 3: Based on Embodiment 1 and Embodiment 2, the present invention is further Fig.10 and Fig.11 As shown, a transfer connection structure of the infusion pipeline 12 is disclosed, so that the end tube 2 can be driven by a motor to continuously rotate in a single direction and prevent the infusion pipeline 12 from twisting and breaking during the process.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile cleaning device for the inner wall of a petroleum pipeline, comprising: A main cylinder (1) has an end cylinder (2) rotatably mounted on the outer side of the end thereof, a movable bracket (3) is fixed on the middle outer wall of the main cylinder (1), and a guide wheel (4) is rotatably mounted on the end of the movable bracket (3); and a cleaning bracket (5) is movably mounted through the outer wall of the end of the end cylinder (2), and a cleaning brush (6) is hingedly mounted on the end of the cleaning bracket (5); It is characterized by further comprising: A steering cylinder (7) is movably mounted on the inner side of the end of the main cylinder (1) and driven by a motor inside the main cylinder (1). A guide cylinder (8) is rotatably mounted on the outer side of the steering cylinder (7) via a sealed bearing. The guide cylinder (8) is connected to the interior of the steering cylinder (7). A propulsion rod (9) is also movably mounted on the right side of the interior of the steering cylinder (7). The propulsion rod (9) is used for driving the angle deflection of the cleaning bracket (5). The flow guide chamber (10) and the flow confluence chamber (11) are respectively arranged on the inner wall and the outer wall of the steering cylinder (7); the flow confluence chamber (11) is fixedly connected to the end cylinder (2); the flow confluence chamber (11) is communicated with the interior of the flow guide cylinder (8) through the flow guide chamber (10); the flow guide cylinder (8) and the interior of the flow guide pipe (101) on the main cylinder body (1) are connected; and the flow confluence chamber (11) is connected to a liquid infusion pipe (12); the liquid infusion pipe (12) is used for liquid supply processing of the guide wheel (4) and the cleaning brush (6); and a water flow driving rotating component of the guide wheel (4) is also arranged on the mobile bracket (3).

2. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 1, characterized in that: The steering cylinder (7), the main cylinder (1) and the end cylinder (2) are coaxially distributed transversely, wherein the rotation connection gap between the main cylinder (1) and the end cylinder (2) is sealed, and the middle section of the steering cylinder (7) is located inside the connection gap between the main cylinder (1) and the end cylinder (2).

3. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 2, characterized in that: The guide tube (8) is configured as a double inner cavity with left and right layers. The left inner cavity of the guide tube (8) is connected to the interior of the steering tube (7), and the right inner cavity of the guide tube (8) is connected to the interior of the guide cavity (10). The guide cavity (10) and the interior of the steering tube (7) are sealed and isolated from each other. The left and right inner cavities of the guide tube (8) are respectively connected to the double pipes inside the guide pipe (101).

4. A mobile cleaning device for the inner wall of a petroleum pipeline according to any one of claims 1 to 3, characterized in that: The propulsion rod (9) and the steering cylinder (7) form a transversely coaxial relative telescopic structure, and the left end of the propulsion rod (9) forms a relatively telescopic structure in contact with the inner wall of the steering cylinder (7) through a sealing ring, and an elastic member is also provided at the connection, and the outer wall of the right end of the propulsion rod (9) is arranged in a strip-shaped sawtooth structure, and the strip-shaped sawtooth outer wall is meshed with the annular sawtooth structure at the head end of the cleaning bracket (5).

5. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 4, characterized in that: The cleaning bracket (5) and the end tube (2) are intersectingly arranged, and an elastic sealing belt is arranged at the intersecting point between the end tube (2) and the cleaning bracket (5) for isolating the environment inside and outside the end tube (2).

6. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 5, characterized in that: Counterweights are installed on both sides of the cleaning brush (6) at the hinged joint at the head end of the cleaning bracket (5) to stabilize the balance state of the cleaning brush (6), and a liquid outlet pipe that is connected to the infusion pipe (12) is also provided on the cleaning brush (6).

7. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 1, characterized in that: Four movable brackets (3) are arranged at equal angles on the outer wall of the main cylinder (1), and rolling balls (13) are fixed at the ends of the two movable brackets (3) on the front and rear sides.

8. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 7, characterized in that: The movable bracket (3) is provided with an elastic member inside, and the two movable brackets (3) at the upper and lower positions are connected to the inside of the infusion pipeline (12), and the output shaft part of the movable bracket (3) is hollow inside; The water flow driven rotating component comprises a flow guiding connector (401) coaxially penetrating and fixed at the end of the output shaft of the hollow part of the movable bracket (3); the middle part of the flow guiding connector (401) and the middle part of the guide wheel (4) are connected to each other by a sealed bearing and are rotatably installed through the middle axis; and a liquid discharge nozzle (402) is also arranged on the inner side of the guide wheel (4).

9. The mobile cleaning device for the inner wall of a petroleum pipeline according to claim 8, characterized in that: The connection between the flow-guiding connector (401) and the middle axis of the guide wheel (4) is arranged as an annular structure, and the liquid discharge nozzle (402) is connected to the inside of the movable bracket (3) and the liquid infusion pipeline (12) through the flow-guiding connector (401).

10. A mobile cleaning device for the inner wall of a petroleum pipeline according to any one of claims 1, 7-9, characterized in that: The infusion pipeline (12) is arranged in a "Y"-shaped structure, and a solenoid valve (14) is also installed at the "Y"-shaped transfer node position of the infusion pipeline (12). At the same time, an energized slip ring is also arranged at the rotation connection between the steering cylinder (7) and the main cylinder body (1) for controlling the solenoid valve (14).

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