Energy-saving anti-corrosion processing device for petroleum pipeline

Abstract

The invention relates to the technical field of petroleum pipeline machining, and discloses an energy-saving petroleum pipeline anti-corrosion machining device which comprises a base, a clamping device is arranged above the base and used for clamping and fixing a petroleum pipeline, and the bottom of the base sleeves and is slidably connected to the bottom of a supporting frame; a linear displacement mechanism is arranged between the supporting frame and the base, the bottom of the supporting frame is driven by the linear displacement mechanism to horizontally move along the bottom of the base, a cross beam is fixedly connected to the top of the supporting frame, and the central axis of the cross beam coincides with the central axis of the clamped and fixed petroleum pipeline. The end, facing the petroleum pipeline, of the cross beam is fixedly connected with a heating base, and the end face of the heating base is rotationally connected with a spraying device. Through the arrangement of the air channel and the spraying device, the spraying device is driven to rotate through cooperation of drying airflow power and paint spraying power, on one hand, uniform spraying of the spraying device is achieved, on the other hand, effective utilization of energy is achieved, and energy loss is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum pipeline processing, in particular to an energy-saving petroleum pipeline anti-corrosion processing device. Background Art

[0002] In the field of oil transportation, oil pipelines are the key transportation carriers, and their safe and stable operation is of vital importance. Since oil often contains various corrosive substances, and pipelines are in a complex environment for a long time, such as soil, water, air and other media, the pipelines are very prone to corrosion. Pipeline corrosion will not only reduce the service life of the pipeline and increase maintenance costs, but in severe cases it may also cause leakage accidents, causing environmental pollution and huge economic losses.

[0003] Traditional oil pipeline anti-corrosion processing equipment has many drawbacks in practical applications. In the spraying process, most spraying devices rely on a single electric drive, which consumes a lot of energy and makes it difficult to ensure uniform spraying of the paint on the inner wall of the pipeline. It is easy to have uneven coating thickness, which affects the anti-corrosion effect. In the polishing process of pre-treatment of the pipeline, the existing polishing device is often unable to effectively remove rust, oxides and impurities on the inner wall of the pipeline, resulting in insufficient adhesion between the subsequent coating and the substrate, and then problems such as bubbling, hollowing, peeling and even shedding of the coating. In addition, traditional devices also have defects in the coordinated operation of various processes. Each process is relatively independent, and energy and resources are not fully utilized, resulting in low overall processing efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an energy-saving oil pipeline anti-corrosion processing device, which solves many drawbacks of traditional oil pipeline anti-corrosion processing devices in practical applications.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving oil pipeline anti-corrosion processing device, including a base, a clamping device is arranged above the base, which is used to clamp and fix the oil pipeline, the bottom of the base is sleeved and slidably connected to the bottom of the support frame, and a linear displacement mechanism is arranged between the support frame and the base, and the bottom of the support frame is driven to move horizontally along the bottom of the base by the linear displacement mechanism, the top of the support frame is fixedly connected to a crossbeam, the central axis of the crossbeam coincides with the central axis of the clamped and fixed oil pipeline, the crossbeam is fixedly connected to one end of the oil pipeline facing the oil pipeline, the end face of the heating seat is rotatably connected to a spraying device, one side of the spraying device is rotatably connected to a grinding device, an airway is arranged in the heating seat, which is used to fill airflow to drive the spraying device to rotate, and output hot airflow to dry the inner pipe wall after spraying, and a paint pipe is also arranged in the center of the airway, the paint pipe runs through the spraying device, the paint is input into the spraying device at high pressure through the paint pipe, and drives the spraying device to rotate.

[0006] Preferably, the clamping device includes a V-shaped groove and a limiting flange, the V-shaped groove is opened on the surface of the base for placing and supporting the pipe body of the oil pipeline, the limiting flange is fixedly connected to one side of the base, and the limiting flange is fixedly connected to the fixed flange of the oil pipeline by bolts.

[0007] Preferably, the linear displacement mechanism includes a screw rod, both ends of which are rotatably connected to the inner walls on both sides of the base, the threaded end of the screw rod is sleeved and threadedly connected with a slider, the upper part of the slider is embedded and slidably connected to the inside of the base, and the bottom wall of the slider is fixedly connected to the bottom upper wall of the support frame, the end of the screw rod close to the limit flange is fixedly connected to an output end of the motor, and an outer wall of the motor is fixedly connected to the outer wall of the base.

[0008] Preferably, the air duct includes air duct one, air duct two and air duct three. The air duct one is horizontally opened in the center of the heating seat, one end is connected to the high-pressure air pipe, and the other end is connected to the air duct two. The air duct two is a disc-shaped structure, which is opened on the side of the heating seat close to the spraying device. The air duct three is a circular ring structure, which is opened on the inner side of the outer circumference of the heating seat and is connected to the air duct two. An air blocking baffle and a heater are arranged in the air duct three.

[0009] Preferably, the spraying device includes a rotor, one end of which is fixedly connected to a centrifugal impeller 1, and this end of the rotor is embedded in a heating seat and rotatably connected to each other, and the other end is fixedly connected to a spray barrel, the centrifugal impeller 1 is located at the center of airway 2, the paint tube sequentially passes through the center of centrifugal impeller 1 and the center of the rotor, and is connected to the inside of the spray barrel, the outer wall of the paint tube is rotatably connected to the centrifugal impeller 1, the rotor, and the spray barrel respectively, the outer circular wall of the rotor is evenly distributed with a plurality of scrapers, the outer circumferential diameter of the outer edge of the plurality of scrapers is equal to the outer diameter of the heating seat, and the difference between the outer diameter of the heating seat and the inner diameter of the oil pipeline is the coating thickness, when the airflow enters the airway, the airflow impacts the centrifugal impeller 1, drives the centrifugal impeller 1 to rotate, and at the same time the airflow enters the airway 3 from the airway 2, and is discharged after deceleration and heating.

[0010] Preferably, a paint flow channel connected to the discharge port of the paint tube is opened in the spray barrel, and a second centrifugal impeller is fixedly connected to the center of the paint flow channel, and the second centrifugal impeller is directly opposite to the discharge port of the paint tube. A plurality of nozzles are evenly distributed on the outer circular wall of the spray barrel, and the nozzles are connected to the paint flow channel. When the paint is output from the paint tube, the paint impacts the second centrifugal impeller, driving the second centrifugal impeller to rotate, and the paint is finally sprayed out from the nozzle.

[0011] Preferably, the grinding device includes a base, one side of the base is rotatably connected to the outer wall of the spray barrel, and the other side is rotatably connected to a grinding head, a second motor is embedded in and fixedly connected to the base, and the output end of the second motor is fixedly connected to the center of the grinding head.

[0012] Preferably, an elastic ring is fixedly connected to the outer circular wall of the base, and the space where the grinding head is located is isolated from the space where the spray barrel is located by the elastic ring, and when the elastic ring is along the inner pipe wall of the oil pipeline.

[0013] Preferably, a blowing air duct is provided on one side of the base close to the grinding head, and a centrifugal impeller three is arranged in the blowing air duct. The centrifugal impeller three is centrally mounted and fixedly connected to the outer wall of the output end of the motor two. When the motor two drives the centrifugal impeller three to rotate, the air flow is blown from the motor two to the grinding head through the centrifugal impeller three.

[0014] The present invention provides an energy-saving petroleum pipeline anti-corrosion processing device. It has the following beneficial effects: The present invention uses the power of the drying airflow to match the power of the spraying paint through the arrangement of the air duct and the spraying device to drive the rotation of the spraying device, which not only realizes the uniform spraying of the spraying device, but also realizes the effective utilization of energy and reduces energy loss. At the same time, the airflow loses kinetic energy after driving the spraying device to rotate, and is further blocked by the air blocking baffle, so that the airflow velocity is greatly reduced. The low-speed airflow is heated by the heater and slowly blows toward the inner wall of the oil pipeline after spraying, which accelerates the molding process of the anti-corrosion paint and avoids the influence of the impact force of the airflow on the adhesion state of the paint. The rotation of the runner drives the scraper to rotate, so that the dripping paint is lifted and utilized again, which not only realizes the operation of the scraper to evenly spread the paint on the inner wall of the sprayed pipeline, but also avoids the problem of paint waste.

[0015] Through the cooperation of the air blowing duct in the base and the centrifugal impeller three, on the one hand, the impurities after grinding are blown away, and on the other hand, the heat dissipation effect of the motor two and the grinding head is improved, thereby ensuring the stable operation of the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an energy-saving petroleum pipeline anti-corrosion processing device of the present invention; Figure 2 It is a structural schematic diagram of the linear displacement mechanism in the present invention; Figure 3 It is a front view of the spraying device in the present invention; Figure 4 is a three-dimensional diagram of the spraying device of the present invention; Figure 5 A three-dimensional diagram of the heating seat of the present invention; Figure 6 It is a structural schematic diagram of the spraying device in the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0017] Among them, 1. base; 2. support frame; 3. crossbeam; 4. heating seat; 5. spray device; 501. rotor; 502. centrifugal impeller 1; 503. spray barrel; 5031. paint flow channel; 504. scraper; 505. centrifugal impeller 2; 506. nozzle; 6. polishing device; 601. base; 6011. air blowing duct; 602. polishing head; 603. motor 2; 604. elastic ring; 605. centrifugal impeller 3; 7. air duct; 701. air duct 1; 702. air duct 2; 703. air duct 3; 704. air blocking baffle; 705. heater; 8. paint tube; 9. V-groove; 10. limit flange; 11. screw rod; 12. slider; 13. motor 1; 14. high-pressure air pipe. DETAILED DESCRIPTION

[0018] 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.

[0019] Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides an energy-saving petroleum pipeline anti-corrosion processing device, including: Figure 1 As shown, the energy-saving oil pipeline anti-corrosion processing device of this embodiment includes a base 1, a clamping device is arranged above the base 1, which is used to clamp and fix the oil pipeline, the bottom of the base 1 is sleeved and slidably connected to the bottom of the support frame 2, and a linear displacement mechanism is arranged between the support frame 2 and the base 1, and the bottom of the support frame 2 is driven to move horizontally along the bottom of the base 1 by the linear displacement mechanism, and a crossbeam 3 is fixedly connected to the top of the support frame 2, and the central axis of the crossbeam 3 coincides with the central axis of the clamped and fixed oil pipeline, and a heating seat 4 is fixedly connected to one end of the crossbeam 3 facing the oil pipeline, and a spraying device 5 is rotatably connected to the end face of the heating seat 4, and a grinding device 6 is rotatably connected to one side of the spraying device 5, and an airway 7 is arranged in the heating seat 4, which is used to fill airflow to drive the spraying device 5 to rotate, and output hot airflow to dry the inner pipe wall after spraying, and a paint pipe 8 is also arranged in the center of the airway 7, and the paint pipe 8 runs through the spraying device 5, and the paint is input into the spraying device 5 at high pressure through the paint pipe 8, and drives the spraying device 5 to rotate.

[0020] By setting up the air duct 7 and the spraying device 5, the power of the drying airflow is matched with the power of the spraying paint to drive the rotation of the spraying device 5. On the one hand, a uniform spraying effect of the spraying device 5 is achieved, and on the other hand, effective use of energy is achieved, reducing energy loss.

[0021] The clamping device includes a V-shaped groove 9 and a limiting flange 10. The V-shaped groove 9 is opened on the surface of the base 1 for placing and supporting the pipe body of the oil pipeline. The limiting flange 10 is fixedly connected to one side of the base 1. The limiting flange 10 is fixedly connected to the fixed flange of the oil pipeline by bolts.

[0022] When processing, the oil pipeline is placed in the V-shaped groove 9, and the oil pipeline is automatically centered under the action of the V-shaped groove 9, and then the oil pipeline is moved to connect the fixed flange with the limit flange 10, so that the oil pipeline is clamped and fixed. The fixed flange and the limit flange 10 can be fixed by traditional bolts or by using quick connectors.

[0023] The linear displacement mechanism includes a screw rod 11, both ends of which are rotatably connected to the inner walls on both sides of the base 1, and a slider 12 is sleeved and threadedly connected at the threaded end of the screw rod 11. The upper part of the slider 12 is embedded and slidably connected to the inside of the base 1, and the bottom wall of the slider 12 is fixedly connected to the bottom upper wall of the support frame 2. One end of the screw rod 11 close to the limit flange 10 is fixedly connected to the output end of the motor 13, and the outer wall of the motor 13 is fixedly connected to the outer wall of the base 1.

[0024] During the processing, the motor 13 drives the screw 11 to rotate, and then the slider 12 drives the support frame 2 to slide along the bottom of the base 1, thereby achieving the purpose of moving the spraying device, the grinding device, etc. along the oil pipeline. Auxiliary parts such as rollers can be installed at the bottom of the support frame 2 to improve the smoothness of the movement of the support frame 2.

[0025] The air channel 7 includes air channel 1 701, air channel 2 702 and air channel 3 703. Air channel 1 701 is horizontally opened in the center of the heating seat 4, one end is connected to the high-pressure air pipe 14, and the other end is connected to air channel 2 702. Air channel 2 702 is a disc-shaped structure, which is opened on the side of the heating seat 4 close to the spray device 5. Air channel 3 703 is a circular ring structure, which is opened on the inner side of the outer circumference of the heating seat 4 and is connected to air channel 2 702. Air channel 3 703 is provided with an air blocking baffle 704 and a heater 705. The spraying device 5 includes a rotating wheel 501, one end of which is fixedly connected to a centrifugal impeller 502, and the rotating wheel 501 is embedded in the heating seat 4 and rotatably connected to each other, and the other end is fixedly connected to a spray barrel 503, the centrifugal impeller 502 is located at the center of the airway 2 702, and the paint tube 8 passes through the center of the centrifugal impeller 502 and the center of the rotating wheel 501 in sequence, and is connected to the inside of the spray barrel 503, and the outer wall of the paint tube 8 is respectively connected to the centrifugal impeller 502 and the rotating wheel 501. The wheel 501 and the spray barrel 503 are rotatably connected, and a plurality of scrapers 504 are evenly distributed on the outer circumferential wall of the rotating wheel 501. The outer circumferential diameter of the outer edge of the plurality of scrapers 504 is equal to the outer diameter of the heating seat 4, and the difference between the outer diameter of the heating seat 4 and the inner diameter of the oil pipeline is the coating thickness. When the airflow enters the airway 7, the airflow impacts the centrifugal impeller 1 502, driving the centrifugal impeller 1 502 to rotate. At the same time, the airflow enters the airway 2 702 into the airway 3 703, and is discharged after being decelerated and heated.

[0026] The air channel 7 is connected to the high-pressure gas output device through the high-pressure air pipe 14. When the high-speed airflow enters the air channel 1 701 from the high-pressure air pipe 14, it impacts the centrifugal impeller 1 502, drives the centrifugal impeller 1 502 to rotate, and then drives the spray device 5 to rotate. At this time, the high-speed airflow loses part of its kinetic energy, the flow rate decreases, and moves with the centrifugal blades, enters the air channel 3 703 from the air channel 2 702, and loses part of its kinetic energy again after being blocked by the air blocking baffle 704, the flow rate is further reduced, and is heated by the heater 705 during the flow process. The hot airflow then flows out of the air channel 3 703 and rushes to the side wall on the other side of the heating seat 4. After the collision, the kinetic energy is reduced again, and it contacts the coating on the inner wall of the oil pipeline to dry it. That is, the molding process of the anti-corrosion coating is accelerated, and the influence of the airflow impact force on the coating adhesion state is avoided.

[0027] A paint flow channel 5031 connected to the discharge port of the paint tube 8 is provided in the spray barrel 503. A centrifugal impeller 505 is fixedly connected to the center of the paint flow channel 5031, and the centrifugal impeller 505 is directly opposite to the discharge port of the paint tube 8. A plurality of nozzles 506 are evenly distributed on the outer circular wall of the spray barrel 503. The nozzles 506 are connected to the paint flow channel 5031. When the paint is output from the paint tube 8, the paint impacts the centrifugal impeller 505, driving the centrifugal impeller 505 to rotate, and the paint is finally sprayed out from the nozzle 506.

[0028] The paint is output by the spraying equipment and enters the paint flow channel 5031 in the spray barrel 503 through the paint pipe 8. The paint flowing at high speed and high pressure impacts the centrifugal impeller 2 505, driving the centrifugal impeller 2 505 to rotate, and then drives the spraying device 5 to rotate. Finally, the paint is sprayed out from the nozzle 506 along the blades of the centrifugal impeller 2 505 at a certain pressure. The nozzle 506 rotates along with the spray barrel 503, so that the spraying uniformity is improved.

[0029] It should be noted that the rotation of the spray device 5 is achieved under the combined effect of airflow impact and paint impact. Through the mutual cooperation of the two, the power to drive the spray device 5 to rotate is achieved.

[0030] At the same time, the rotation of the wheel 501 drives the scraper 504 to rotate, so that the paint dripping due to gravity is lifted up and utilized again, which not only enables the scraper 504 to evenly spread the paint on the inner wall of the pipe after spraying, but also avoids the problem of paint waste.

[0031] The grinding device 6 includes a base 601, one side of the base 601 is rotatably connected to the outer wall of the spray barrel 503, and the other side is rotatably connected to the grinding head 602. The base 601 is embedded with and fixedly connected to the motor 2 603, and the output end of the motor 2 603 is fixedly connected to the center of the grinding head 602. The base 601 is provided with a blowing air duct 6011 on one side close to the grinding head 602, and a centrifugal impeller 3 605 is arranged in the blowing air duct 6011. The center of the centrifugal impeller 3 605 is sleeved and fixedly connected to the outer wall of the output end of the motor 2 603. When the motor 2 603 drives the centrifugal impeller 3 605 to rotate, the air flow is blown from the motor 2 603 to the grinding head 602 through the centrifugal impeller 3 605.

[0032] The grinding head 602 is driven to rotate by the motor 2 603 to grind the inner wall of the oil pipeline to eliminate rust, oxides, impurities, etc. on the inner wall of the pipeline, ensure good adhesion between the coating and the substrate and the quality of the coating, thereby improving the bonding strength between the coating and the substrate, reducing problems such as bubbling, hollowing, peeling, and shedding of the coating, and extending the service life of the coating.

[0033] At the same time, when the motor 2 603 drives the grinding head 602 to rotate, the centrifugal impeller 3 605 is driven to rotate synchronously. The high-speed rotating centrifugal impeller 3 605 generates suction to absorb the air passing through the motor 2 603, and outputs the air flow from the blowing duct 6011 to purge the grinding head 602. On the one hand, it realizes the purge of impurities after grinding, and on the other hand, it improves the heat dissipation effect of the motor 2 603 and the grinding head 602, thereby ensuring the stable operation of the grinding device 6.

[0034] The outer wall of the base 601 is fixedly connected with an elastic ring 604, through which the space where the grinding head 602 is located is isolated from the space where the spray barrel 503 is located, and when the elastic ring 604 is along the inner wall of the oil pipeline.

[0035] The function of the elastic ring 604 is to isolate the space where the grinding head 602 is located from the space where the spray barrel 503 is located, and further scrape impurities from the inner wall of the oil pipeline after grinding, thereby avoiding the influence of impurities generated by grinding on subsequent spraying.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving petroleum pipeline anti-corrosion processing device, comprising a base (1), characterized in that: A clamping device is arranged above the base (1) for clamping and fixing the oil pipeline. The bottom of the base (1) is sleeved and slidably connected to the bottom of the support frame (2), and a linear displacement mechanism is arranged between the support frame (2) and the base (1). The linear displacement mechanism drives the bottom of the support frame (2) to move horizontally along the bottom of the base (1). A crossbeam (3) is fixedly connected to the top of the support frame (2). The central axis of the crossbeam (3) coincides with the central axis of the oil pipeline to be clamped and fixed. The crossbeam (3) is fixedly connected to one end of the oil pipeline. A heating seat (4), the end surface of the heating seat (4) is rotatably connected to a spraying device (5), one side of the spraying device (5) is rotatably connected to a grinding device (6), an air channel (7) is provided in the heating seat (4), which is used to fill air flow to drive the spraying device (5) to rotate, and output hot air flow to dry the inner tube wall after spraying, and a paint pipe (8) is also provided in the center of the air channel (7), the paint pipe (8) penetrates into the spraying device (5), and the paint is input into the spraying device (5) at high pressure through the paint pipe (8), and drives the spraying device (5) to rotate.

2. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 1 is characterized in that: The clamping device comprises a V-shaped groove (9) and a limiting flange (10); the V-shaped groove (9) is formed on the surface of the base (1) and is used to place and support the pipe body of the oil pipeline; the limiting flange (10) is fixedly connected to one side of the base (1); the limiting flange (10) is fixedly connected to the fixed flange of the oil pipeline by bolts.

3. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 2 is characterized in that: The linear displacement mechanism comprises a screw rod (11), the two ends of the screw rod (11) are respectively rotatably connected to the inner walls on both sides of the base (1), the threaded end of the screw rod (11) is sleeved and threadedly connected with a slider (12), the upper part of the slider (12) is embedded in and slidably connected to the inside of the base (1), and the bottom wall of the slider (12) is fixedly connected to the bottom upper wall of the support frame (2), the end of the screw rod (11) close to the limit flange (10) is fixedly connected to the output end of the motor one (13), and the outer wall of the motor one (13) is fixedly connected to the outer wall of the base (1).

4. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 1 is characterized in that: The air channel (7) comprises air channel one (701), air channel two (702) and air channel three (703). The air channel one (701) is horizontally opened at the center of the heating seat (4), one end of which is connected to the high-pressure air pipe (14), and the other end of which is connected to the air channel two (702). The air channel two (702) is a disc-shaped structure, which is opened on the side of the heating seat (4) close to the spraying device (5). The air channel three (703) is a circular ring structure, which is opened on the inner side of the outer circumference of the heating seat (4) and is connected to the air channel two (702). The air channel three (703) is provided with an air blocking baffle (704) and a heater (705).

5. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 4 is characterized in that: The spraying device (5) comprises a rotor (501), one end of the rotor (501) is fixedly connected to a centrifugal impeller (502), and the end of the rotor (501) is embedded in a heating seat (4) and rotatably connected to each other, and the other end is fixedly connected to a spray barrel (503), the centrifugal impeller (502) is located at the center of the airway (702), the paint tube (8) passes through the center of the centrifugal impeller (502) and the center of the rotor (501) in sequence, and is connected to the inside of the spray barrel (503), and the outer wall of the paint tube (8) is respectively connected to the centrifugal impeller (502) and the inner wall of the paint tube (8). 502), a rotating wheel (501), and a spray barrel (503) are rotatably connected. A plurality of scrapers (504) are evenly distributed on the outer circumferential wall of the rotating wheel (501). The outer circumferential diameter of the outer edge of the plurality of scrapers (504) is equal to the outer diameter of the heating seat (4). The difference between the outer diameter of the heating seat (4) and the inner diameter of the oil pipeline is the coating thickness. When the airflow enters the airway (7), the airflow impacts the centrifugal impeller one (502), driving the centrifugal impeller one (502) to rotate. At the same time, the airflow enters the airway two (702) into the airway three (703), and is discharged after being decelerated and heated.

6. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 5 is characterized in that: The spray barrel (503) is provided with a paint flow channel (5031) connected to the discharge port of the paint tube (8); a second centrifugal impeller (505) is fixedly connected to the center of the paint flow channel (5031), and the second centrifugal impeller (505) is directly opposite to the discharge port of the paint tube (8); a plurality of nozzles (506) are evenly distributed on the outer circular wall of the spray barrel (503); the nozzles (506) are connected to the paint flow channel (5031); when the paint tube (8) outputs the paint, the paint impacts the second centrifugal impeller (505), driving the second centrifugal impeller (505) to rotate, and the paint is finally sprayed out from the nozzles (506).

7. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 1 is characterized in that: The grinding device (6) comprises a base (601), one side of the base (601) is rotatably connected to the outer wall of the spray barrel (503), and the other side is rotatably connected to a grinding head (602), a second motor (603) is embedded in and fixedly connected to the base (601), and the output end of the second motor (603) is fixedly connected to the center of the grinding head (602).

8. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 7 is characterized in that: The outer circular wall of the base (601) is fixedly connected with an elastic ring (604), and the space where the grinding head (602) is located is isolated from the space where the spray barrel (503) is located by the elastic ring (604), and when the elastic ring (604) is along the inner wall of the oil pipeline.

9. The energy-saving petroleum pipeline anti-corrosion processing device according to claim 7 is characterized in that: A blowing air duct (6011) is provided on one side of the base (601) close to the grinding head (602), and a centrifugal impeller (605) is provided in the blowing air duct (6011). The center of the centrifugal impeller (605) is sleeved and fixedly connected to the outer wall of the output end of the motor (603). When the motor (603) drives the centrifugal impeller (605) to rotate, air flows from the motor (603) through the centrifugal impeller (605) and blows toward the grinding head (602).

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