Anti-corrosion device for pipeline on-line film forming of oil refining and chemical engineering device

Abstract

The invention discloses an anti-corrosion device for online film formation of a pipeline of an oil refining and chemical engineering device, which comprises a material pool, a clamping mechanism, a drying device and an inner cavity coating scraping device, and a support frame is mounted at the top of the material pool; the clamping mechanism comprises a first clamping assembly and a second clamping assembly which are oppositely arranged and used for clamping the two ends of a pipeline correspondingly. The first clamping assembly is provided with a rotating assembly used for driving a pipeline to rotate. The drying device is fixedly installed in the middle of the top end of the supporting frame and corresponds to the pipeline. The inner cavity coating scraping device is fixedly installed at the end, close to the second clamping assembly, of the supporting frame and located on the side, away from the pipeline, of the second clamping assembly, and the maximum outer diameter of the inner cavity coating scraping device is smaller than the inner diameter of the pipeline. By means of the immersion dyeing and coating mode, the inner surface and the outer surface of the pipeline can be dip-dyed with anti-corrosion paint, the anti-corrosion paint treatment is faster and more uniform, omission is avoided, and pipeline corrosion prevention is safer and more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline anti-corrosion, in particular to an anti-corrosion device for online film formation of pipelines of oil refining and chemical plants. Background Art

[0002] The anti-corrosion technology of pipelines in oil refining and chemical plants is one of the problems that the oil industry urgently needs to solve. The main anti-corrosion method at present is to coat the equipment and the inner wall of the oil pipeline with anti-corrosion materials to form an anti-corrosion coating.

[0003] Existing corrosion protection methods for oil pipelines typically use an in-line film-forming device to inject a film-forming liquid into the pipeline. The pipe is then heated, allowing the liquid to form a coke film that adheres to the inner wall of the pipeline, ultimately forming an anti-corrosion layer. However, existing anti-corrosion devices cannot effectively diffuse the film-forming liquid around the inner wall of the pipeline, seriously affecting the quality of the protective coating and its anti-corrosion effectiveness.

[0004] Therefore, an anti-corrosion device for online film formation of pipelines of oil refining and chemical plants is proposed to solve the above technical problems. Summary of the Invention

[0005] The object of the present invention is to provide an anti-corrosion device for online film formation of pipelines of oil refining and chemical plants, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned object, the present invention provides an anti-corrosion device for online film formation of pipelines in oil refining and chemical plants, comprising:

[0007] A material pool, wherein the material pool contains anti-corrosion paint and a support frame is installed on the top of the material pool;

[0008] A clamping mechanism, comprising a first clamping assembly and a second clamping assembly mounted on the support frame, the first clamping assembly and the second clamping assembly being arranged opposite to each other and respectively used to clamp the two ends of the pipe; wherein the first clamping assembly is provided with a rotating assembly for driving the pipe to rotate;

[0009] A drying device, the drying device is fixedly mounted on the middle portion of the top end of the support frame, and the drying device is arranged corresponding to the pipeline;

[0010] An inner cavity paint scraping device is fixedly mounted on one end of the support frame close to the second clamping assembly and is located on the side of the second clamping assembly away from the pipe. The maximum outer diameter of the inner cavity paint scraping device is smaller than the inner diameter of the pipe, and the distance between the inner cavity paint scraping device and the inner wall of the pipe is 1 mm to 5 mm.

[0011] Preferably, the first clamping assembly includes a first telescopic cylinder fixedly mounted on the support frame, the bottom end of the first telescopic cylinder is fixedly connected to a first mounting frame, and the rotating assembly is fixedly mounted on the first mounting frame; a fixed disk 1 is fixedly connected to the output shaft of the rotating assembly, a plurality of second telescopic cylinders are fixedly connected to the side of the fixed disk 1 away from the rotating assembly at equal intervals along the circumferential direction, the end of the second telescopic cylinder is fixedly connected to a fixed disk 2, and a clamping claw is fixedly mounted on the side of the fixed disk 2 away from the second telescopic cylinder.

[0012] Preferably, the rotating component is a servo motor.

[0013] Preferably, the second clamping assembly includes a third telescopic cylinder fixedly mounted on the support frame, the bottom end of the third telescopic cylinder is fixedly connected to the second mounting frame, the second mounting frame is fixedly connected to a fixed disk three, a side of the fixed disk three away from the second mounting frame is fixedly connected to a plurality of fourth telescopic cylinders at equal intervals along the circumferential direction, the end of the fourth telescopic cylinder is fixedly connected to a turntable, and a clamping claw is fixedly mounted on the side of the turntable away from the fourth telescopic cylinder; the second mounting frame, the fixed disk three and the turntable are all provided with coaxially arranged holes, and the inner cavity paint scraping device is arranged corresponding to the holes.

[0014] Preferably, the inner cavity paint scraping device includes a positioning plate fixedly mounted on the support frame, a fifth telescopic cylinder is fixedly mounted on the positioning plate, a scraping head is fixedly connected to the piston end of the fifth telescopic cylinder, the diameter of the scraping head is smaller than the diameter of the hole, and the distance between the outer wall of the scraping head and the inner wall of the pipe is 1mm to 5mm.

[0015] Preferably, a material storage trough is provided in the middle of the scraper head, and a groove communicating with the material storage trough is provided at one end of the scraper head away from the fifth telescopic cylinder.

[0016] Preferably, the clamp includes a plurality of connecting rods arranged at equal intervals along the circumferential direction, a threaded hole is provided on one end of the connecting rod close to the pipe, the threaded hole is arranged along the radial direction of the pipe, a screw is threadedly connected to the threaded hole, and the screw is rotatably connected to a clamping block near one end of the pipe.

[0017] Preferably, the drying device includes a mounting plate fixedly connected to the middle of the top end of the support frame, and two heating plates are fixedly connected to the bottom end of the mounting plate. The two heating plates are symmetrically arranged, and the pipeline is arranged between the two heating plates.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects:

[0019] The present invention provides an online film-forming anti-corrosion device for pipelines of oil refining and chemical plants. The pipeline to be treated with anti-corrosion treatment is clamped and fixed by a clamping mechanism, and the clamping mechanism is used to place the pipeline into a material pool so that the pipeline is in full contact with the anti-corrosion coating in the material pool. The clamping mechanism is then used to remove the pipeline from the material pool, and the pipeline is rotated by a rotating assembly. During the rotation of the pipeline, excess coating attached to the outer wall is thrown off, and the coating attached to the inner wall forms a coating with a relatively uniform thickness under the action of centrifugal force. The coating is then scraped off by an inner cavity coating scraping device, so that the coating thickness on the inner wall of the pipeline is controlled within the required thickness range, so that the coating can meet the quality requirements after being dried by a drying device. The present invention can dip the inner and outer surfaces of the pipeline into the anti-corrosion coating by immersion coating. The anti-corrosion coating is processed more quickly and evenly to avoid omissions, making the pipeline anti-corrosion safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an anti-corrosion device for online film formation on pipelines of oil refining and chemical plants according to the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0023] Figure 3 for Figure 1 A partial enlarged view of B in the middle;

[0024] In the figure: 1. Material pool; 2. Support frame; 3. First telescopic cylinder; 4. First mounting frame; 5. Fixed plate 1; 6. Second telescopic cylinder; 7. Fixed plate 2; 8. Servo motor; 9. Third telescopic cylinder; 10. Second mounting frame; 11. Fixed plate 3; 12. Fourth telescopic cylinder; 13. Turntable; 14. Positioning plate; 15. Fifth telescopic cylinder; 16. Scraper head; 17. Material storage trough; 18. Groove; 19. Connecting rod; 20. Screw; 21. Clamp; 22. Mounting plate; 23. Heating plate. DETAILED DESCRIPTION

[0025] It should be noted that, unless there is a conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other. The embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] like Figures 1 to 3 As shown, the present invention provides an anti-corrosion device for online film formation of pipelines in oil refining and chemical plants, comprising:

[0027] A material pool 1 is filled with anti-corrosion paint, and a support frame 2 is installed on the top of the material pool 1;

[0028] The clamping mechanism includes a first clamping assembly and a second clamping assembly mounted on the support frame 2. The first clamping assembly and the second clamping assembly are arranged opposite to each other and are respectively used to clamp the two ends of the pipe; wherein the first clamping assembly is provided with a rotating assembly for driving the pipe to rotate;

[0029] The drying device is fixedly mounted on the middle of the top of the support frame 2, and the drying device is arranged corresponding to the pipeline;

[0030] The inner cavity paint scraping device is fixedly mounted on one end of the support frame 2 close to the second clamping assembly and is located on the side of the second clamping assembly away from the pipe. The maximum outer diameter of the inner cavity paint scraping device is smaller than the inner diameter of the pipe, and the distance between the inner cavity paint scraping device and the inner wall of the pipe is 1mm to 5mm.

[0031] When the present invention is used, the pipe that needs to be treated with anti-corrosion is clamped and fixed by a clamping mechanism, and the clamping mechanism is used to place the pipe into the material pool 1 so that the pipe is in full contact with the anti-corrosion coating in the material pool 1. The clamping mechanism is then used to take the pipe out of the material pool 1, and the rotating assembly is used to rotate the pipe. During the rotation of the pipe, the excess coating attached to the outer wall is thrown off, and the coating attached to the inner wall forms a coating with a relatively uniform thickness under the action of centrifugal force. The coating is then scraped off using an inner cavity coating scraping device, so that the coating thickness on the inner wall of the pipe is controlled within the required thickness range, so that the coating can meet the quality requirements after being dried by a drying device. The present invention can dip the inner and outer surfaces of the pipe into the anti-corrosion coating by immersion coating, and the anti-corrosion coating is processed more quickly and evenly to avoid omissions, making the pipeline anti-corrosion safer and more reliable.

[0032] To further optimize the solution, in order to facilitate the lifting and rotating of the pipeline, the first clamping assembly includes a first telescopic cylinder 3 fixedly mounted on the support frame 2, the bottom end of the first telescopic cylinder 3 is fixedly connected to the first mounting frame 4, and the rotating assembly is fixedly mounted on the first mounting frame 4; a fixed disk 1 5 is fixedly connected to the output shaft of the rotating assembly, and a plurality of second telescopic cylinders 6 are fixedly connected to the side of the fixed disk 1 5 away from the rotating assembly at equal intervals along the circumferential direction, the end of the second telescopic cylinder 6 is fixedly connected to a fixed disk 2 7, and a clamping claw is fixedly mounted on the side of the fixed disk 2 7 away from the second telescopic cylinder 6.

[0033] According to a further optimized solution, the rotating component is a servo motor 8.

[0034] A further optimized solution is provided, in which the second clamping assembly includes a third telescopic cylinder 9 fixedly mounted on the support frame 2, the bottom end of the third telescopic cylinder 9 is fixedly connected to the second mounting frame 10, the second mounting frame 10 is fixedly connected to a fixed disk three 11, a side of the fixed disk three 11 away from the second mounting frame 10 is fixedly connected to a plurality of fourth telescopic cylinders 12 at equal intervals along the circumferential direction, the end of the fourth telescopic cylinder 12 is fixedly connected to a turntable 13, and a clamping claw is fixedly mounted on the side of the turntable 13 away from the fourth telescopic cylinder 12; in order not to affect the normal use of the inner cavity paint scraping device, coaxially arranged holes are provided on the second mounting frame 10, the fixed disk three 11 and the turntable 13, and the inner cavity paint scraping device is arranged corresponding to the holes.

[0035] To further optimize the solution, in order to facilitate the removal of excess anti-corrosion paint in the pipeline and to control the thickness of the coating, the inner cavity paint scraping device includes a positioning plate 14 fixedly mounted on the support frame 2, and a fifth telescopic cylinder 15 is fixedly mounted on the positioning plate 14. The piston end of the fifth telescopic cylinder 15 is fixedly connected to a scraping head 16. The diameter of the scraping head 16 is smaller than the diameter of the hole, and the distance between the outer wall of the scraping head 16 and the inner wall of the pipeline is 1mm to 5mm.

[0036] To further optimize the solution, in order to avoid uneven coating thickness on the inner wall of the pipe, a material storage trough 17 is provided in the middle of the scraper head 16 , and a groove 18 connected to the material storage trough 17 is provided at the end of the scraper head 16 away from the fifth telescopic cylinder 15 .

[0037] A further optimized solution is to facilitate clamping and fixing of the pipeline. The clamp includes a plurality of connecting rods 19 arranged at equal intervals along the circumferential direction. The connecting rod 19 is provided with a threaded hole at one end close to the pipeline. The threaded hole is arranged along the radial direction of the pipeline. A screw 20 is threadedly connected to the threaded hole. The screw 20 is rotatably connected to a clamping block 21 near one end of the pipeline.

[0038] A further optimized solution is that the drying device includes a mounting plate 22 fixedly connected to the middle of the top of the support frame 2, and two heating plates 23 are fixedly connected to the bottom end of the mounting plate 22. The two heating plates 23 are symmetrically arranged, and the pipeline is arranged between the two heating plates 23.

[0039] The present invention provides an anti-corrosion device for online film formation on pipelines of oil refining and chemical plants. The working principle is as follows:

[0040] During use, the pipeline that needs to be treated with anti-corrosion is first positioned using the inner cavity paint scraping device, so that the pipeline is between the clamping blocks 21 of the clamping mechanism, and then the clamping blocks 21 are used to fix the pipeline between the two clamping components by adjusting the screw 20. The scraping head 16 of the inner cavity paint scraping device is then withdrawn from the pipeline, and the first telescopic cylinder 3 and the third telescopic cylinder 9 are used to synchronously operate to place the pipeline into the material pool 1, so that the pipeline is in full contact with the anti-corrosion paint in the material pool 1. The first telescopic cylinder 3 and the third telescopic cylinder 9 are then used to take the pipeline out of the material pool 1, and the servo motor 8 is used to drive the pipeline to rotate. During the rotation of the pipeline, the excess paint attached to the outer wall is thrown off, and the paint attached to the inner wall forms a coating with relatively uniform thickness under the action of centrifugal force. The scraping head 16 of the inner cavity paint scraping device is then used to scrape off the excess paint, so that the coating thickness on the inner wall of the pipeline is controlled within the required thickness range, so that the coating can meet the quality requirements after being dried into a film using a drying device.

[0041] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An anti-corrosion device for online film forming of pipelines in oil refining and chemical plants, characterized in that: include: A material pool (1), wherein the material pool (1) contains anti-corrosion coating, and a support frame (2) is installed on the top of the material pool (1); A clamping mechanism, comprising a first clamping assembly and a second clamping assembly mounted on the support frame (2), the first clamping assembly and the second clamping assembly being arranged opposite to each other and respectively used to clamp the two ends of the pipe; wherein the first clamping assembly is provided with a rotating assembly for driving the pipe to rotate; A drying device, the drying device being fixedly mounted on the middle portion of the top end of the support frame (2), and the drying device being arranged corresponding to the pipeline; An inner cavity paint scraping device is fixedly mounted on one end of the support frame (2) close to the second clamping assembly and located on a side of the second clamping assembly away from the pipe. The maximum outer diameter of the inner cavity paint scraping device is smaller than the inner diameter of the pipe, and the distance between the inner cavity paint scraping device and the inner wall of the pipe is 1 mm to 5 mm.

2. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 1 is characterized in that: The first clamping assembly comprises a first telescopic cylinder (3) fixedly mounted on the support frame (2), the bottom end of the first telescopic cylinder (3) is fixedly connected to a first mounting frame (4), and the rotating assembly is fixedly mounted on the first mounting frame (4); a fixed disk 1 (5) is fixedly connected to the output shaft of the rotating assembly, a plurality of second telescopic cylinders (6) are fixedly connected to the side of the fixed disk 1 (5) away from the rotating assembly at equal intervals along the circumferential direction, the end of the second telescopic cylinder (6) is fixedly connected to a fixed disk 2 (7), and a clamping claw is fixedly mounted on the side of the fixed disk 2 (7) away from the second telescopic cylinder (6).

3. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 2, characterized in that: The rotating assembly is a servo motor (8).

4. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 1, characterized in that: The second clamping assembly includes a third telescopic cylinder (9) fixedly mounted on the support frame (2), the bottom end of the third telescopic cylinder (9) is fixedly connected to a second mounting frame (10), a fixed disk three (11) is fixedly connected to the second mounting frame (10), a side of the fixed disk three (11) away from the second mounting frame (10) is fixedly connected to a plurality of fourth telescopic cylinders (12) at equal intervals along the circumferential direction, the end of the fourth telescopic cylinder (12) is fixedly connected to a turntable (13), and a clamping claw is fixedly mounted on the side of the turntable (13) away from the fourth telescopic cylinder (12); the second mounting frame (10), the fixed disk three (11) and the turntable (13) are all provided with coaxially arranged holes, and the inner cavity paint scraping device is arranged corresponding to the holes.

5. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 4 is characterized in that: The inner cavity paint scraping device comprises a positioning plate (14) fixedly mounted on the support frame (2), a fifth telescopic cylinder (15) fixedly mounted on the positioning plate (14), a scraping head (16) fixedly connected to the piston end of the fifth telescopic cylinder (15), the diameter of the scraping head (16) being smaller than the diameter of the hole, and the distance between the outer wall of the scraping head (16) and the inner wall of the pipe being 1 mm to 5 mm.

6. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 5, characterized in that: A material storage groove (17) is provided in the middle of the scraper head (16), and a groove (18) communicating with the material storage groove (17) is provided at one end of the scraper head (16) away from the fifth telescopic cylinder (15).

7. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 2 or 4, characterized in that: The clamping jaw comprises a plurality of connecting rods (19) arranged at equal intervals along the circumferential direction, wherein a threaded hole is provided on one end of the connecting rod (19) close to the pipe, and the threaded hole is arranged along the radial direction of the pipe, and a screw rod (20) is threadedly connected to the threaded hole, and the screw rod (20) is rotatably connected to a clamping block (21) close to one end of the pipe.

8. The anti-corrosion device for online film forming of pipelines in oil refining and chemical plants according to claim 1, characterized in that: The drying device comprises a mounting plate (22) fixedly connected to the middle of the top end of the support frame (2), two heating plates (23) are fixedly connected to the bottom end of the mounting plate (22), the two heating plates (23) are symmetrically arranged, and the pipeline is arranged between the two heating plates (23).

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