A detection device for pipe repair

Abstract

The application discloses a detection device for pipeline repair, and belongs to the technical field of pipeline repair, which comprises a crawler, a lining mechanism, a cloth clamping mechanism arranged at the end of the crawler and close to the lining mechanism, wherein the lining mechanism is placed at the end of the lining mechanism and can be fixed on the inner wall of the steel pipe as a whole through steam curing, and the cloth clamping mechanism comprises two rubber columns fixed at the end of the crawler, and a pressing plate is slidably arranged at the end of the rubber column. The lining mechanism can be pulled in through the cloth clamping mechanism, so that integrated operation of pipeline detection and lining pulling-in can be realized, the cloth clamping mechanism and the crawler can pull in hundreds of meters of lining at one time, the steam curing process can quickly complete lining fixation, the overall operation cycle is short, and the repair of hundreds of meters of road sections can be completed in less than one week, so that the construction period is greatly shortened compared with traditional excavation repair, and the influence on the normal operation of the heating network is reduced.

Description

Technical Field

[0001] This application relates to the field of pipeline repair technology, and more specifically, to a detection device for pipeline repair. Background Technology

[0002] Pipelines, serving as the "blood vessels" of urban infrastructure and industrial production, are widely used in water supply, drainage, gas, petroleum, and chemical industries, undertaking the core function of fluid transportation. With increasing usage time or external environmental influences, pipelines are prone to damage and aging, leading to the development of pipeline repair technologies.

[0003] The pipeline repair and inspection device mainly includes a crawler, a control terminal, transmission cables, and auxiliary cleaning devices. The crawler carries a camera and lighting equipment and moves along the pipeline. The real-time images captured by the camera are transmitted to the control terminal via cables.

[0004] However, traditional heating pipeline repairs often involve excavation, which requires cutting the pipeline along its entire length and closing off streets. This not only requires complex excavation approval procedures and a long planning period, but also seriously disrupts surrounding traffic and residents' daily lives.

[0005] In view of this, we propose a detection device for pipeline repair. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this application proposes a detection device for pipeline repair.

[0007] This application provides a detection device for pipeline repair, comprising: crawler, The inner lining mechanism, placed at the end of the inner lining mechanism, can be fixed to the inner wall of the steel pipe by steam curing; A fabric clamping mechanism is provided at the end of the crawler, and the fabric clamping mechanism is located near the inner lining mechanism; The fabric clamping mechanism includes two rubber columns fixed to the end of the crawler. A pressing plate is slidably provided at the end of the rubber columns. The pressing plate is driven by an external force to move away from or towards one side of the two rubber columns, and is used to clamp and fix the inner lining mechanism placed between the rubber columns and the pressing plate, and to pull the inner lining mechanism as a whole into the steel pipe for subsequent curing treatment.

[0008] As an optional solution to the technical solution of this application, the inner lining mechanism includes an outer membrane disposed at the end of the crawler. The inner wall of the outer membrane is sequentially fixed with resin, multiple layers of carbon fiber and an inner membrane. The outer membrane can be tied at one end, and steam can be used to inflate the outer membrane to fit against the inner wall of the steel pipe. It can then be cured and fixed to the inner wall of the steel pipe for pipe repair.

[0009] As an optional solution to the technical solution of this application, the fabric clamping mechanism further includes a frame fixed on both sides of the crawler, an electric push rod installed on the inner wall of the frame, and a connecting member fixedly connected to the output shafts of the two electric push rods, wherein the connecting member is fixedly connected to the pressing plate.

[0010] As an optional solution to the technical solution of this application, the crawler end is provided with a cleaning mechanism, which is located on the side away from the cloth clamping mechanism. The cleaning mechanism includes two sliding plates provided at the end of the crawler, and scrapers are fixedly connected to the bottom of the two sliding plates for scraping outwards the impurities on the bottom wall of the steel pipe. An inclined plate is fixedly connected to the outer wall of the scraper.

[0011] As an optional solution to the technical solution of this application, the cleaning mechanism further includes two mounting brackets fixed to the end of the crawler. The end of the mounting bracket is provided with a sliding groove. The sliding plate is slidably disposed on the inner wall of the sliding groove. A counterweight is fixed to the outer wall of the sliding plate for pressing the scraper to fit stably against the steel pipe.

[0012] As an optional solution to the technical solution in this application, the pressing plate has an arc structure, which is used to fit the outer wall of the rubber column and increase the stability of the clamping liner mechanism. A friction plate is installed on the side of the pressing plate near the rubber column.

[0013] As an optional solution to the technical solution of this application, the crawler is rotatably connected to multiple moving wheels at its bottom, and a detector is installed at the end of the crawler. The detector is located near the cleaning mechanism, and a camera is installed on the inner wall of the detector.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) This application uses a fabric clamping mechanism, which can realize the integrated operation of pipeline inspection and lining pulling in by pulling in the lining mechanism. The fabric clamping mechanism, together with the crawler, can pull in hundreds of meters of lining at one time. The steam curing process can quickly complete the lining fixation. The overall operation cycle is short, and the repair of hundreds of meters of road section can be completed in less than a week. Compared with traditional excavation repair, the construction period is greatly shortened and the impact on the normal operation of the heating network is reduced.

[0015] (2) This application removes impurities from the pipe through a cleaning mechanism to avoid obstructing the camera field of view of the detector and ensure accurate detection results. At the same time, the cleaned flat pipe wall provides a foundation for the bonding and curing of the lining mechanism, preventing impurities from causing movement and wear between the lining and the pipe wall, as well as some impurities affecting the curing. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a testing device for pipeline repair disclosed in a preferred embodiment of this application; Figure 2 This is a schematic diagram of the crawler structure of a pipeline repair inspection device disclosed in a preferred embodiment of this application; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a diagram showing the effect after the lining mechanism of the inspection device for pipeline repair disclosed in a preferred embodiment of this application is fixed. Figure 5 This is a schematic diagram of the cleaning machine structure of a testing device for pipeline repair disclosed in a preferred embodiment of this application; The following are the labels in the diagram: 1. Crawler; 11. Moving wheel; 12. Detector; 13. Camera; 2. Lining mechanism; 21. Outer membrane; 22. Resin; 23. Multi-layer carbon fiber; 24. Inner membrane; 3. Fabric clamping mechanism; 31. Rubber column; 32. Pressing plate; 33. Frame; 34. Electric push rod; 35. Connector; 4. Cleaning mechanism; 41. Mounting frame; 42. Slide groove; 43. Slide plate; 44. Counterweight; 45. Scraper; 46. Inclined plate; 100. Steel pipe. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings.

[0018] Reference Figures 1-5 This application discloses a detection device for pipeline repair, comprising a crawler 1, an inner lining mechanism 2, and a fabric clamping mechanism 3. The crawler 1 is positioned at the end of the inner lining mechanism 2 and can be steam-cured to fix it to the inner wall of a steel pipe 100. The fabric clamping mechanism 3 is positioned near the inner lining mechanism 2. The fabric clamping mechanism 3 includes two rubber posts 31 fixed to the end of the crawler 1. A pressing plate 32 is slidably disposed at the end of each rubber post 31. The pressing plate 32 is driven by external force to move away from or towards one side of the two rubber posts 31, for clamping and fixing the device placed between the rubber posts 31 and the pressing plate 32. The inner lining mechanism 2 and the fabric clamping mechanism 3 also include a frame 33 fixed on both sides of the crawler 1. An electric push rod 34 is installed on the inner wall of the frame 33. The output shafts of the two electric push rods 34 are fixedly connected to a connector 35. The connector 35 is fixedly connected to the pressing plate 32. Multiple moving wheels 11 are rotatably connected to the bottom of the crawler 1. A detector 12 is installed at the end of the crawler 1. The detector 12 is located near the cleaning mechanism 4. A camera 13 is installed on the inner wall of the detector 12. The inner lining mechanism 2 includes an outer membrane 21 located at the end of the crawler 1. A resin 22, a multi-layer carbon fiber 23, and an inner membrane 24 are sequentially fixed to the inner wall of the outer membrane 21. Before the device enters the steel pipe 100, the working pit is excavated using external equipment. Then, the crawler 1 is placed inside the steel pipe 100, and the inside of the steel pipe 100 is cleaned. The two frames 33 of the fabric clamping mechanism 3 are fixed to both sides of the crawler 1. After receiving a command, the electric push rod 34 on the inner wall of the frame 33 drives the connecting piece 35 connected to the output shaft to move. The connecting piece 35 drives the pressing plate 32, which is fixed to it, to move closer to the rubber column 31, allowing it to tightly adhere to the outer wall of the rubber column 31. Subsequently, the crawler 1 moves forward along the inner wall of the steel pipe 100 via the moving wheels 11, simultaneously pulling the inner lining mechanism 2 into the steel pipe 100. After the inner lining mechanism 2 is fully pulled in, the worker tightens one end of the outer membrane 21 of the inner lining mechanism 2 and applies pressurized steam between the inner membrane 24 and the outer membrane 21. The steam causes the outer membrane 21 to expand and bulge, tightly adhering to the inner wall of the steel pipe 100, while simultaneously heating the resin 22. The resin 22 is cured and the multi-layer carbon fiber 23 is firmly bonded to the inner wall of the steel pipe 100. After curing, the carbon fiber lining is sealed to the original pipe through a special joint and a leakage test is conducted. After the test is passed, the sealing joint is welded. Finally, the detector 12 is activated again and the state of the cured lining pipe wall is observed through the camera 13 to confirm that the pipe wall is tightly attached to the original steel pipe 100, without delamination or detachment. This step can realize the integrated operation of pipe inspection and lining pull-in. The cloth clamping mechanism 3, together with the crawler 1, can pull in hundreds of meters of lining at one time. The steam curing process can quickly complete the lining fixation. The overall operation cycle is short, and the repair of hundreds of meters of road section can be completed in less than a week. Compared with traditional excavation repair, the construction period is greatly shortened and the impact on the normal operation of the heating network is reduced. After the multi-layer carbon fiber 23 and high-temperature resistant resin 22 of the lining mechanism 2 are cured, they can withstand a high temperature of 130℃ and a pressure of more than 1.6MPa, which can improve the stability of the pipeline in use.

[0019] Reference Figures 1-5A cleaning mechanism 4 is provided at the end of the crawler 1. The cleaning mechanism 4 is located on the side away from the cloth clamping mechanism 3. The cleaning mechanism 4 includes two sliding plates 43 at the end of the crawler 1. Scrapers 45 are fixed to the bottom of the two sliding plates 43 to scrape the impurities on the bottom wall of the steel pipe 100 outward. An inclined plate 46 is fixed to the outer wall of the scraper 45. The cleaning mechanism 4 also includes two mounting brackets 41 fixed to the end of the crawler 1. The mounting brackets 41 have grooves 42 at their ends. The sliding plates 43 are slidably arranged on the inner wall of the grooves 42. A counterweight 44 is fixed to the outer wall of the sliding plates 43. The cleaning mechanism 4 on the side away from the cloth clamping mechanism 3 starts working first. The two mounting brackets 41 of the cleaning mechanism 4 are fixed to the end of the crawler 1. The sliding plates 43 slide in the grooves 42 of the mounting brackets 41. The counterweight 44 at the bottom of the sliding plates 43 presses down on the sliding plates 43 by gravity, so that the scrapers 45 at the bottom of the sliding plates 43 are tightly attached to the bottom wall of the steel pipe 100. As the crawler 1 moves, the scraper 45 scrapes away foreign objects, welding residues, deposits and other impurities from the bottom wall of the steel pipe 100. The inclined plate 46 on the outer wall of the scraper 45 can guide the impurities to accumulate on both sides of the pipe. At the same time, the replacement or maintenance can be completed by separating the sliding plate 43 from the chute 42. In this step, the cleaning mechanism 4 first removes impurities from the pipe to prevent impurities from obstructing the field of view of the camera 13 of the detector 12 and to ensure accurate detection results. At the same time, the cleaned flat pipe wall provides a basis for the bonding and curing of the inner lining mechanism 2, preventing impurities from causing movement and wear between the inner lining and the pipe wall, as well as some impurities affecting the curing. Separating the sliding plate 43 from the chute 42 makes it easier to replace or disassemble the scraper 45 as a whole in the future.

[0020] Reference Figures 1-5 The pressing plate 32 has an arc structure and is used to fit against the outer wall of the rubber column 31 and increase the stability of the clamping liner mechanism 2. A friction plate is installed on the side of the pressing plate 32 near the rubber column 31. The connecting piece 35 drives the pressing plate 32, which is fixed to it, to move closer to the rubber column 31. Since the pressing plate 32 has an arc structure, it can fit tightly against the outer wall of the rubber column 31, and the friction plate on the side of the pressing plate 32 near the rubber column 31 can increase the friction. This step, together with the arc-shaped pressing plate 32 and the friction plate on its outer wall, can improve the stability of fixing the liner mechanism 2.

[0021] In summary, when using the pipeline repair testing device disclosed in this application embodiment, before the device enters the steel pipe 100, the working pit is first excavated by external equipment. Then, the crawler 1 is placed inside the steel pipe 100, and the inside of the steel pipe 100 is cleaned first. The two frames 33 of the cloth clamping mechanism 3 are fixed on both sides of the crawler 1. After receiving the command, the electric push rod 34 on the inner wall of the frame 33 drives the connecting piece 35 connected to the output shaft to move. The connecting piece 35 drives the pressing plate 32 fixed to it to move towards the rubber column 31, so that it can tightly fit the outer wall of the rubber column 31. Then, the crawler 1 moves forward along the inner wall of the steel pipe 100 through the moving wheel 11, and simultaneously pulls the inner lining mechanism 2 into the steel pipe 100. After the inner lining mechanism 2 is fully pulled in, the worker ties one end of the outer membrane 21 of the inner lining mechanism 2 tightly and applies pressure between the inner membrane 24 and the outer membrane 21. Pressurized steam causes the outer membrane 21 to expand and bulge, tightly adhering to the inner wall of the steel pipe 100. Simultaneously, the resin 22 is heated, causing it to cure and firmly bond the multi-layer carbon fiber 23 to the inner wall of the steel pipe 100. After curing, the carbon fiber lining is sealed to the original pipe through a special joint, and a leakage test is conducted. After the test is passed, the sealing joint is welded. Finally, the detector 12 is activated again, and the state of the cured lining pipe wall is observed through the camera 13 to confirm that the pipe wall is tightly attached to the original steel pipe 100, without delamination or detachment. The cleaning mechanism 4 on the side away from the cloth clamping mechanism 3 starts operation first. The two mounting brackets 41 of the cleaning mechanism 4 are fixed to the end of the crawler 1. The slide plate 43 slides in the groove 42 of the mounting bracket 41. The counterweight block 44 at the bottom of the slide plate 43 presses the slide plate 43 by gravity, so that the scraper 45 at the bottom of the slide plate 43 is tightly attached to the bottom wall of the steel pipe 100. As the crawler 1 moves, the scraper 45 scrapes away foreign objects, welding residues, deposits and other impurities from the bottom wall of the steel pipe 100. The inclined plate 46 on the outer wall of the scraper 45 can guide the impurities to accumulate on both sides of the pipe. At the same time, the replacement or maintenance can be completed by separating the sliding plate 43 from the chute 42. The connector 35 drives the pressing plate 32 fixed to it to move towards the rubber column 31. Since the pressing plate 32 has a circular arc structure, it can fit tightly against the outer wall of the rubber column 31, and the friction plate on the side of the pressing plate 32 near the rubber column 31 can increase the friction.

Claims

1. A detection device for pipeline repair, characterized in that, Include: Crawler (1) The inner lining mechanism (2) is placed at the end of the inner lining mechanism (2) and can be fixed to the inner wall of the steel pipe (100) by steam curing. The fabric clamping mechanism (3) is located at the end of the crawler (1), and the fabric clamping mechanism (3) is located near the inner lining mechanism (2); The fabric clamping mechanism (3) includes two rubber columns (31) fixed at the end of the crawler (1). A pressing plate (32) is slidably provided at the end of the rubber column (31). The pressing plate (32) is driven by external force to move away from or closer to one side of the two rubber columns (31) to clamp and fix the inner lining mechanism (2) placed between the rubber column (31) and the pressing plate (32).

2. The detection device for pipeline repair according to claim 1, characterized in that: The inner lining mechanism (2) includes an outer membrane (21) disposed at the end of the crawler (1), and the inner wall of the outer membrane (21) is sequentially fixed with resin (22), multilayer carbon fiber (23) and inner membrane (24).

3. The detection device for pipeline repair according to claim 1, characterized in that: The fabric clamping mechanism (3) also includes a frame (33) fixed on both sides of the crawler (1). An electric push rod (34) is installed on the inner wall of the frame (33). The output shafts of the two electric push rods (34) are fixedly connected to a connector (35). The connector (35) is fixedly connected to the pressing plate (32).

4. The detection device for pipeline repair according to claim 1, characterized in that: The crawler (1) is provided with a cleaning mechanism (4) at its end. The cleaning mechanism (4) is located on the side away from the cloth clamping mechanism (3). The cleaning mechanism (4) includes two sliding plates (43) at the end of the crawler (1). The bottom of the two sliding plates (43) is fixedly connected to a scraper (45) for scraping outwards the impurities on the bottom wall of the steel pipe (100). The outer wall of the scraper (45) is fixedly connected to an inclined plate (46).

5. The detection device for pipeline repair according to claim 4, characterized in that: The cleaning mechanism (4) also includes two mounting brackets (41) fixed to the end of the crawler (1). The mounting brackets (41) have a groove (42) at their ends. The sliding plate (43) is slidably disposed on the inner wall of the groove (42). A counterweight (44) is fixedly connected to the outer wall of the sliding plate (43).

6. The detection device for pipeline repair according to claim 1, characterized in that: The pressing plate (32) has an arc structure and is used to fit the outer wall of the rubber column (31) and increase the stability of the clamping liner mechanism (2). A friction plate is installed on the side of the pressing plate (32) near the rubber column (31).

7. The detection device for pipeline repair according to claim 1, characterized in that: The crawler (1) has multiple moving wheels (11) rotatably connected to its bottom. A detector (12) is installed at the end of the crawler (1). The detector (12) is located near the cleaning mechanism (4). A camera (13) is installed on the inner wall of the detector (12).

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