Large pipeline inner wall anti-corrosion device for pipeline engineering

Abstract

The utility model discloses a large pipeline inner wall anti-corrosion device for pipeline engineering, which comprises a machine body, a storage box is arranged in the machine body, a conveying pipe is fixedly mounted on one side of the storage box, a sealing pipe is movably sleeved outside the conveying pipe, and one end of the sealing pipe extends to the outside of the machine body and is fixedly connected with a plurality of nozzles. By means of the structure, the first motor drives the transmission plate to rotate and is matched with sliding of the limiting shaft in the limiting groove, the first supporting rod drives the first rolling wheel to do stable circular motion along the inner wall of the pipeline, meanwhile, the first supporting rod can drive the second supporting rod to ascend and descend, the position of the second rolling wheel is adjusted, and it is ensured that the device can be tightly attached to the inner walls of pipelines with different pipe diameters; no-dead-corner spraying is achieved, and the problem that local missed coating is prone to occurring in traditional operation is solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline internal wall corrosion protection technology, and in particular to a large pipeline internal wall corrosion protection device for pipeline engineering. Background Technology

[0002] The media transported by pipelines, such as various industrial wastewater, chemical raw materials, oil and gas, are mostly corrosive. Oxygen, moisture in the air, and electrolytes in the soil can also corrode the inner wall of the pipeline. When exposed to this environment for a long time, the inner wall of the pipeline will be gradually eroded, resulting in pits, holes, or even cracks, which reduces the strength and service life of the pipeline. Corrosion protection treatment can effectively isolate the corrosive media from contact with the inner wall of the pipeline and protect the pipeline.

[0003] In the prior art, such as the anti-corrosion device for the inner wall of a large pipeline in pipeline engineering proposed in patent 202211119669.3, when the first drive moves to the farthest point of its stroke, the controller controls the first drive to retract. During the retraction process, the first drive slowly retracts, and at this time the controller controls the first pump to shut down, so there is no need to spray the anti-corrosion agent again. By setting a rotating disk, the anti-corrosion agent inside can be thrown onto the inner wall of the large pipeline when the rotating disk rotates, so that it is evenly sprayed onto the inner wall of the large pipeline. However, when performing anti-corrosion work manually or with fixed equipment, it is difficult to ensure the uniformity of the coating sprayed or applied to the entire inner wall of the pipeline, which can easily lead to problems such as inconsistent thickness and local missed coating, thereby reducing the protective performance of the anti-corrosion coating and affecting the service life of the pipeline. Therefore, in order to solve this problem, we propose an anti-corrosion device for the inner wall of a large pipeline in pipeline engineering. Utility Model Content

[0004] The purpose of this utility model is to provide a large-scale pipe inner wall anti-corrosion device for pipeline engineering, which ensures that the device can fit tightly against the inner wall of pipes of different diameters, achieves spraying without dead angles, solves the problem of local missed coating in traditional operations, accurately matches different spraying thicknesses and the curvature of the inner wall of the pipe, and after the scraper is adjusted to the ideal position, the bolts are tightened to fix it firmly in the limiting sleeve.

[0005] To achieve the above objectives, a large-scale pipeline internal wall anti-corrosion device for pipeline engineering is provided, comprising a body, an internal storage box, a conveying pipe fixedly installed on one side of the storage box, a sealing pipe movably fitted outside the conveying pipe, one end of the sealing pipe extending to the outside of the body and fixedly connected to multiple nozzles, a transmission plate movably fitted inside the rear end of the body, four guide plates fixedly installed inside the rear end of the body, a first support rod movably fitted inside each guide plate, a first roller movably fitted at one end of each first support rod extending to the outside of the body, four circular holes opened inside the body, a second support rod movably fitted inside each of the circular holes, a second roller movably fitted at one end of each second support rod, a fixing plate fixedly installed on one side of each second support rod, two support plates fixedly installed at one end of the sealing pipe, a limit sleeve fixedly installed on one side of each support plate, a scraper movably fitted inside the limit sleeve, and a bolt movably fitted inside the limit sleeve.

[0006] According to the aforementioned large-scale pipeline internal wall anti-corrosion device for pipeline engineering, a first motor is fixedly installed at the rear end of the machine body, and the output shaft of the first motor is fixedly connected to the transmission plate.

[0007] According to the aforementioned large-scale pipeline internal wall anti-corrosion device for pipeline engineering, a limiting shaft is fixedly installed at one end of the first support rod, a limiting groove is opened inside the transmission plate, and the limiting shaft is movably fitted into the limiting groove opened inside the transmission plate.

[0008] According to the aforementioned anti-corrosion device for the inner wall of a large pipeline in pipeline engineering, a second motor is fixedly installed at one end of the first support rod, and the output shaft of the second motor is fixedly connected to the first roller.

[0009] According to the aforementioned anti-corrosion device for the inner wall of a large pipeline for pipeline engineering, a first gear is fixedly installed on the outside of the sealing pipe, a third motor is fixedly installed at one end of the storage box, and a second gear is fixedly installed on the outside of the output shaft of the third motor, the second gear meshing with the first gear.

[0010] According to the aforementioned large-scale pipeline internal wall anti-corrosion device for pipeline engineering, one end of the fixing plate is fixedly connected to the first support rod, and the first support rod can drive the second support rod to rise and fall using the fixing plate.

[0011] According to the aforementioned large-scale pipeline internal wall anti-corrosion device for pipeline engineering, one end of the storage tank is fixedly installed with a liquid inlet pipe, and one end of the liquid inlet pipe extends to the outside of the machine body.

[0012] According to the aforementioned large-scale pipeline internal wall anti-corrosion device for pipeline engineering, the support plate is symmetrically distributed along the radial direction of the sealing pipe.

[0013] Beneficial effects:

[0014] 1. The first motor drives the transmission plate to rotate, and the limiting shaft slides in the limiting groove. The first support rod drives the first roller to make a stable circumferential motion along the inner wall of the pipe. At the same time, the first support rod can drive the second support rod to rise and fall, and adjust the position of the second roller to ensure that the device can closely fit the inner wall of pipes of different diameters, realize the spraying without dead angles, and solve the problem of local missed coating that is easy to occur in traditional operations.

[0015] 2. After the equipment enters the inner wall of the pipeline to start spraying anti-corrosion coating, the operator can flexibly adjust the position of the scraper in the limiting sleeve according to the actual spraying situation of the inner wall of the pipeline. By rotating the bolt, the constraint on the scraper can be loosened, and the scraper can slide up and down in the limiting sleeve to accurately match different spraying thicknesses and the curvature of the inner wall of the pipeline. After the scraper is adjusted to the ideal position, tighten the bolt to fix it firmly in the limiting sleeve.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a perspective view of a large-scale pipeline internal wall anti-corrosion device for pipeline engineering proposed in this utility model.

[0019] Figure 2 This is a cross-sectional view of a large-scale pipeline internal wall anti-corrosion device for pipeline engineering proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the transmission plate of a large-scale pipeline internal wall anti-corrosion device for pipeline engineering proposed in this utility model.

[0021] Figure 4 The present utility model proposes Figure 2 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Body; 2. Storage tank; 3. Delivery pipe; 4. Sealing pipe; 5. Nozzle; 6. Transmission plate; 7. Guide plate; 8. First support rod; 9. First roller; 10. Second support rod; 11. Second roller; 12. Fixing plate; 13. Support plate; 14. Limiting sleeve; 15. Scraper; 16. Bolt; 17. First motor; 18. Limiting shaft; 19. Second motor; 20. First gear; 21. Third motor; 22. Second gear; 23. Liquid inlet pipe. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses a large-scale pipeline internal wall anti-corrosion device for pipeline engineering, comprising a body 1 for anti-corrosion of the pipeline internal wall. The body 1 has a storage tank 2 for storing anti-corrosion coating. A delivery pipe 3 is fixedly installed on one side of the storage tank 2, which delivers the anti-corrosion coating into a sealing pipe 4. The sealing pipe 4 is movably fitted outside the delivery pipe 3, which delivers the anti-corrosion coating into a nozzle 5. One end of the sealing pipe 4 extends to the outside of the body 1 and is fixedly connected to multiple nozzles. A nozzle 5 is used to spray paint onto the inner wall of the pipe. A transmission plate 6 is movably mounted at the rear end of the machine body 1, which drives the first support rod 8. Four guide plates 7 are fixedly installed at the rear end of the machine body 1, facilitating the movement of the first support rod 8 and also limiting its movement. The first support rod 8 is movably mounted inside each guide plate 7, supporting the movement of the first roller 9. One end of the first support rod 8 extends to the external movably mounted part of the machine body 1. The machine body 1 has a first roller 9, which drives the machine body 1 to move. The machine body 1 has four circular holes inside, and a second support rod 10 is movably fitted inside each of these holes. The second support rod 10 supports the movement of the second roller 11. One end of the second support rod 10 is movably fitted with the second roller 11, which is pressed against the inner wall of the pipe to facilitate the movement of the machine body 1. A fixing plate 12 is fixedly installed on one side of the second support rod 10, which secures the first support rod 8 and the second support rod 10. The connection is made so that two support plates 13 are fixedly installed at one end of the sealing pipe 4. The support plates 13 are used to support the scraper 15 for operation. A limiting sleeve 14 is fixedly installed on one side of the support plate 13. The limiting sleeve 14 is used to adjust the position of the scraper 15. The scraper 15 is movably fitted inside the limiting sleeve 14. The scraper 15 can make the spray thickness inside the pipe more uniform. The bolt 16 is movably fitted inside the limiting sleeve 14. The bolt 16 can be used to adjust the position of the scraper 15 to accurately match different spray thicknesses and the curvature of the inner wall of the pipe.

[0026] Specifically: A first motor 17 is fixedly installed at the rear end of the body 1. The output shaft of the first motor 17 is fixedly connected to the transmission plate 6. The first motor 17 can drive the transmission plate 6 to move.

[0027] Specifically: a limiting shaft 18 is fixedly installed at one end of the first support rod 8, and a limiting groove is opened inside the transmission plate 6. The limiting shaft 18 is movably fitted into the limiting groove opened inside the transmission plate 6. By using the limiting shaft 18 fitted inside the transmission plate 6, the first support rod 8 can be driven to move through the transmission plate 6.

[0028] Specifically: A second motor 19 is fixedly installed at one end of the first support rod 8. The output shaft of the second motor 19 is fixedly connected to the first roller 9. The second motor 19 can drive the first roller 9 to move.

[0029] Specifically: A first gear 20 is fixedly installed on the outside of the sealing tube 4, and a third motor 21 is fixedly installed on one end of the storage box 2. The third motor 21 can drive the second gear 22 to rotate. The output shaft of the third motor 21 is fixedly installed with the second gear 22. The second gear 22 meshes with the first gear 20, and the second gear 22 can drive the first gear 20 to move.

[0030] Specifically: One end of the fixing plate 12 is fixedly connected to the first support rod 8. The first support rod 8 can drive the second support rod 10 to rise and fall using the fixing plate 12. The second support rod 10 can be more closely attached to the pipe by the fixing plate 12 driving the second support rod 10.

[0031] Specifically: One end of the storage tank 2 is fixedly installed with an inlet pipe 23, one end of which extends to the outside of the body 1. The anti-corrosion coating can be injected into the storage tank 2 using the inlet pipe 23.

[0032] Specifically: The support plate 13 is symmetrically distributed along the radial direction of the sealing pipe 4. The symmetrical distribution of the support plate 13 allows for better adjustment of the scraper 15.

[0033] Working principle: First, the anti-corrosion coating is injected into the storage tank 2 through the liquid inlet pipe 23. After the device is started, the third motor 21 drives the second gear 22 to rotate. Since the second gear 22 meshes with the first gear 20, it drives the sealing pipe 4 to rotate, causing multiple nozzles 5 fixed at one end of the sealing pipe 4 to rotate accordingly, so that the anti-corrosion coating delivered from the storage tank 2 through the delivery pipe 3 is evenly sprayed onto the inner wall of the pipe.

[0034] Regarding the movement of the device, the first motor 17 drives the transmission plate 6 to rotate. At this time, the limiting shaft 18 at one end of the first support rod 8 slides in the limiting groove opened inside the transmission plate 6, so that the first support rod 8 drives the first roller 9 to closely adhere to the inner wall of the pipe. Then, the second motor 19 drives the first roller 9 to move, providing power for the movement of the device in the pipe. At the same time, the first support rod 8 can drive the second support rod 10 to rise and fall through the fixing plate 12, thereby adjusting the position of the second roller 11, so that the device can closely adhere to the inner wall of pipes with different diameters, effectively avoiding spraying dead angles caused by differences in pipe diameter, and solving the problem of local missed coating that is easy to occur in traditional operations.

[0035] During the spraying process, the operator can flexibly adjust the position of the scraper 15 within the limiting sleeve 14 according to the actual spraying conditions of the inner wall of the pipe. In specific operation, the bolt 16 is rotated to loosen the restraint on the scraper 15, and the scraper 15 can slide up and down within the limiting sleeve 14 to accurately match different spraying thicknesses and the curvature of the inner wall of the pipe. After the scraper 15 is adjusted to the ideal position, the bolt 16 is tightened again to firmly fix the scraper 15 within the limiting sleeve 14 to ensure that the spraying effect is uniform and meets the requirements.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering, comprising a body (1), characterized in that: The machine body (1) is equipped with a storage box (2) inside. A conveying pipe (3) is fixedly installed on one side of the storage box (2). A sealing pipe (4) is movably fitted on the outside of the conveying pipe (3). One end of the sealing pipe (4) extends to the outside of the machine body (1) and is fixedly connected to multiple nozzles (5). A transmission plate (6) is movably fitted on the rear end of the machine body (1). Four guide plates (7) are fixedly installed on the rear end of the machine body (1). A first support rod (8) is movably fitted inside each guide plate (7). One end of the first support rod (8) extends to the outside of the machine body (1) and is movably fitted with a first roller. The machine body (1) has four round holes inside. A second support rod (10) is movably fitted inside each of the round holes of the machine body (1). A second roller (11) is movably fitted at one end of the second support rod (10). A fixing plate (12) is fixedly installed on one side of the second support rod (10). Two support plates (13) are fixedly installed at one end of the sealing tube (4). A limiting sleeve (14) is fixedly installed on one side of the support plate (13). A scraper (15) is movably fitted inside the limiting sleeve (14). A bolt (16) is movably fitted inside the limiting sleeve (14).

2. The large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, The rear end of the body (1) is fixedly installed with a first motor (17), and the output shaft of the first motor (17) is fixedly connected to the transmission plate (6).

3. The large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, One end of the first support rod (8) is fixedly installed with a limiting shaft (18), and a limiting groove is opened inside the transmission plate (6). The limiting shaft (18) is movably fitted into the limiting groove opened inside the transmission plate (6).

4. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, A second motor (19) is fixedly installed at one end of the first support rod (8), and the output shaft of the second motor (19) is fixedly connected to the first roller (9).

5. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, A first gear (20) is fixedly installed on the outside of the sealing tube (4), a third motor (21) is fixedly installed on one end of the storage box (2), and a second gear (22) is fixedly installed on the outside of the output shaft of the third motor (21). The second gear (22) meshes with the first gear (20).

6. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, One end of the fixing plate (12) is fixedly connected to the first support rod (8), and the first support rod (8) can drive the second support rod (10) to rise and fall using the fixing plate (12).

7. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, One end of the storage tank (2) is fixedly installed with a liquid inlet pipe (23), and one end of the liquid inlet pipe (23) extends to the outside of the body (1).

8. A large-scale pipeline internal wall anti-corrosion device for pipeline engineering according to claim 1, characterized in that, The support plate (13) is symmetrically distributed along the radial direction of the sealing tube (4).

Images