A pipe trenchless repair expandable sealing liner structure

Abstract

The utility model belongs to pipeline repair technical field especially, it is a kind of expandable sealing inner lining structure for pipeline trenchless repair, including the main pipe in the inside of overhaul pipe, the outer wall of main pipe is connected with the inflation port of setting and fixedly connected, and the outer wall of main pipe is located the outside of inflation port and is provided with air bag, the periphery of air bag outer wall is provided with inner lining repair paste, the utility model air bag can be according to the diameter of overhaul pipe and expand, drive inner lining repair paste closely and adhere to the inner wall of overhaul pipe, can greatly improve sealing effect, avoid later leakage, motor can drive T type frame rotation, so that binocular camera can 360 degree shooting main pipe inside condition, accurate positioning repair mouth position, do not need artificial to enter pipeline and explore, in addition, external water source is transported to spray head by water inlet hose, communication pipe and water outlet hose, and spray head rotates with T type frame and carries out circumferential flushing, it is helpful to clean up the impurity of repair mouth and periphery inner wall thoroughly, guarantee inner lining repair paste to stick firmly.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair technology, and in particular to an expandable diameter sealing liner structure for trenchless pipeline repair. Background Technology

[0002] Trenchless pipeline repair technology is a technique for inspecting, repairing, and replacing underground pipelines without damaging the ground, road surface, or other external environment. It is widely used in municipal, gas, and power sectors, significantly reducing the impact of traditional open-cut repair on traffic and residents' lives, and decreasing construction costs and time. Among its core processes, lining repair is one such technique. By laying repair materials inside the pipeline, it achieves functions such as sealing pipeline leaks and reinforcing the structure.

[0003] However, existing trenchless pipeline lining repair technologies have some shortcomings: On the one hand, traditional lining structures lack the ability to expand and adjust, making it difficult to adapt to inspection pipes of different diameters. During repair, the lining may not fit tightly against the inner wall of the pipe, resulting in poor sealing and potential leakage later. On the other hand, the lack of efficient pipe internal inspection and cleaning devices during the repair process makes it impossible to accurately locate the repair opening, and impurities and dirt on the inner wall of the pipe can affect the adhesion stability of the lining repair patch. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an expandable diameter sealing liner structure for trenchless pipeline repair, which overcomes the deficiencies of existing technologies and effectively solves the problems of traditional liner structures being unable to adapt to inspection pipes of different diameters, as well as the difficulty in accurate positioning and incomplete cleaning of the pipeline inner wall during the repair process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An expandable sealing liner structure for trenchless pipeline repair includes a main pipe located inside the inspection pipe, an air inlet connected and fixedly connected to the outer wall of the main pipe, and an air bladder located outside the air inlet on the outer wall of the main pipe, with a liner repair patch arranged around the periphery of the outer wall of the air bladder. The outer wall of one end of the main pipe is fixedly connected to a motor base via a flange, and a motor is fixedly connected to the inner wall of the motor base via screws. The output shaft of the motor is fixedly connected to a T-shaped frame via a coupling, and a binocular camera and a nozzle are respectively installed at both ends of the top outer wall of the T-shaped frame. A water outlet hose is fixedly connected to the bottom outer wall of the nozzle, and a connecting pipe is fixedly connected to the outer wall of one end of the water outlet hose. A water inlet hose for connecting to an external water source is fixedly connected to the outer wall of one end of the connecting pipe.

[0006] Preferably, the connecting pipe is disposed through the inner walls of both ends of the main pipe.

[0007] Preferably, the outer wall of the main pipe away from the motor base is screwed with adjacent extension pipes, and the outer wall of one end of the extension pipe is screwed with an air inlet hose for connecting to an external air source.

[0008] Preferably, guide rings are installed at both ends of the outer wall of the main pipe, and mounting sleeves are embedded around the outer wall of the guide rings. A telescopic column is slidably connected to the inner wall of the mounting sleeve, and a pulley is installed on the outer wall of one end of the telescopic column. A spring is fixedly connected between the mounting sleeve and the telescopic column.

[0009] Preferably, the pulley slides on the inner wall of the inspection tube, and the guide ring is located at both ends of the airbag.

[0010] Preferably, a repair port is provided on the outer wall of the inspection tube, and an inner lining repair sticker is pasted on the inner wall of the repair port.

[0011] Preferably, a well chamber is provided on the outer wall of one end of the inspection pipe, and both the water inlet hose and the air inlet hose are located inside the well chamber.

[0012] The beneficial effects of this utility model are as follows: 1. The trenchless pipeline repair structure designed here is an expandable diameter sealing liner. When an external air source inflates the airbag through the air inlet hose, extension pipe and air inlet, the airbag can expand according to the diameter of the repair pipe, which drives the liner to fit tightly against the inner wall of the repair pipe. It can accurately cover the repair opening, which can greatly improve the sealing effect and avoid later leakage. At the same time, the telescopic column on the guide ring cooperates with the spring, and the pulley can adapt to the inner diameter of the repair pipe, ensuring that the device slides stably in pipes of different diameters, further ensuring the stability of the repair process. 2. This design features an expandable diameter sealing liner structure for trenchless pipeline repair. The motor drives the T-shaped frame to rotate, allowing the binocular camera to capture 360° images of the inside of the main pipe, accurately locating the repair opening without requiring manual entry into the pipeline for inspection. In addition, external water is delivered to the nozzles via inlet hoses, connecting pipes, and outlet hoses. The nozzles rotate with the T-shaped frame to perform circumferential rinsing, which helps to thoroughly clean impurities from the repair opening and surrounding inner walls, ensuring that the liner repair patch adheres firmly. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an expandable diameter sealing liner structure for trenchless pipeline repair proposed in this utility model. Figure 2 This is a schematic diagram of the internal structure of a repair pipe with an expandable diameter sealing liner structure for trenchless pipeline repair proposed in this utility model. Figure 3 for Figure 2 Enlarged schematic diagram of part A of the structure; Figure 4 To give Figure 2A schematic diagram of the internal structure of the airbag; Figure 5 for Figure 4 Enlarged schematic diagram of part B structure; Figure 6 This is a schematic diagram of the structure of an expandable diameter sealing liner structure for trenchless pipeline repair proposed in this utility model, after the liner repair patch is pasted onto the repair opening and the airbag is removed. Figure 7 This is a schematic diagram of the guide ring connection structure of an expandable diameter sealing liner structure for trenchless pipeline repair proposed in this utility model.

[0014] In the diagram: 1. Inspection pipe; 2. Main pipe; 3. Inflation port; 4. Airbag; 5. Liner repair patch; 6. Motor mount; 7. Motor; 8. T-frame; 9. Binocular camera; 10. Nozzle; 11. Water outlet hose; 12. Connecting pipe; 13. Water inlet hose; 14. Extension pipe; 15. Air inlet hose; 16. Guide ring; 17. Mounting sleeve; 18. Telescopic column; 19. Pulley; 20. Spring; 21. Repair port; 22. Well chamber. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-7 Example 1: A trenchless pipeline repair structure with expandable diameter sealing liner includes a main pipe 2 located inside the inspection pipe 1. An air inlet 3 is connected and fixedly connected to the outer wall of the main pipe 2. An air bladder 4 is provided on the outer wall of the main pipe 2 outside the air inlet 3. A liner repair patch 5 is provided around the outer wall of the air bladder 4. An adjacent extension pipe 14 is screwed to the outer wall of the end of the main pipe 2 away from the motor base 6. An air inlet hose 15 for connecting to an external air source is screwed to the outer wall of one end of the extension pipe 14.

[0017] In this embodiment, the air inlet hose 15 serves as a connection component between the external air source and the device, stably delivering compressed air and other air sources to the extension pipe 14. The extension pipe 14 is connected to the main pipe 2 via a screw connection. The operator can increase or decrease the number of extension pipes 14 according to the actual length of the inspection pipe 1, flexibly adjusting the length of the entire device to ensure that the airbag 4 and the inner lining repair patch 5 can reach any position inside the pipe that needs repair. The inflation port 3 connects the main pipe 2 and the airbag 4. After the air source enters the main pipe 2 through the extension pipe 14, it enters the interior of the airbag 4 through the inflation port 3, causing the airbag 4 to inflate. The inflated airbag 4 can tightly fit the inner wall of the inspection pipe 1, and at the same time, it drives the inner lining repair patch 5 (using model: IPEK inner lining repair sheet, specially used for the repair of sewage pipes, the material is flexible polyester fiber + resin composite, which can be pasted on damp surfaces) on the outer wall to be simultaneously applied, achieving a sealed repair of the repair port 21. Moreover, the airbag 4 is made of elastic rubber material, and the maximum expansion diameter can reach 1.2-1.5 times the diameter of the inspection pipe.

[0018] In embodiment 2, a motor base 6 is fixedly connected to the outer wall of one end of the main pipe 2 via a flange, and a motor 7 is fixedly connected to the inner wall of the motor base 6 via screws. The output shaft of the motor 7 is fixedly connected to a T-shaped frame 8 via a coupling, and a binocular camera 9 and a nozzle 10 are respectively installed at both ends of the top outer wall of the T-shaped frame 8. A water outlet hose 11 is fixedly connected to the bottom outer wall of the nozzle 10, and a connecting pipe 12 is fixedly connected to the outer wall of one end of the water outlet hose 11. A water inlet hose 13 for connecting to an external water source is fixedly connected to the outer wall of one end of the connecting pipe 12, and the connecting pipe 12 is installed through the inner walls of both ends of the main pipe 2.

[0019] In this embodiment, the motor base 6 is connected to the main pipe 2 via a flange. This flange connection ensures the motor base 6 is securely installed, preventing shaking during motor 7 operation. The motor 7 is fixed to the inner wall of the motor base 6 with screws, facilitating disassembly and maintenance. The output shaft of the motor 7 is connected to the T-shaped frame 8 via a coupling. The coupling compensates for installation errors between the motor 7 output shaft and the T-shaped frame 8, ensuring stable rotation of the T-shaped frame 8. The binocular camera 9 (model: Intel RealSense) is also included. The D435 / D455, a depth vision camera launched by Intel (which has been publicly disclosed and widely used in pipeline inspection), is installed at one end of the T-frame 8 and can rotate with the T-frame 8 to capture images of the inside of the inspection pipe 1. The images are transmitted in real time through an external display device to help operators accurately locate the repair port 21. The binocular camera 9 has image recognition function for automatic identification of the repair port 21. The nozzle 10 is installed at the other end of the T-frame 8. The water inlet hose 13 is connected to an external high-pressure water source. The nozzle 10 is a fan-shaped nozzle with a water pressure of not less than 0.5MPa. The water source enters the connecting pipe 12 through the water inlet hose 13. The connecting pipe 12 runs through both ends of the main pipe 2 to ensure a stable water supply to the water outlet hose 11, and then sprays out from the nozzle 10. The rotating nozzle 10 can thoroughly rinse the inner wall of the inspection pipe 1 to remove impurities.

[0020] Guide rings 16 are installed at both ends of the outer wall of the main pipe 2, and mounting sleeves 17 are embedded around the outer wall of the guide rings 16. Telescopic columns 18 are slidably connected to the inner wall of the mounting sleeves 17, and pulleys 19 are installed on the outer wall of one end of the telescopic columns 18. A spring 20 is fixedly connected between the mounting sleeves 17 and the telescopic columns 18. The pulleys 19 slide on the inner wall of the inspection pipe 1, and the guide rings 16 are located at both ends of the airbag 4.

[0021] With the above scheme, the guide ring 16 is installed at both ends of the main pipe 2 and located on both sides of the airbag 4. It can guide the movement of the main pipe 2 in the inspection pipe 1 and prevent the main pipe 2 from shifting, causing the airbag 4 and the repair port 21 to misalign. The mounting sleeve 17 is embedded in the outer wall of the guide ring 16 to provide a sliding channel for the telescopic column 18. The telescopic column 18 can freely extend and retract within the mounting sleeve 17. The spring 20 connects the mounting sleeve 17 and the telescopic column 18. When the diameter of the inspection pipe 1 changes, the spring 20 can push the telescopic column 18 to extend or retract through its own elasticity, so that the pulley 19 is always tightly attached to the inner wall of the inspection pipe 1. The pulley 19 contacts the inner wall of the inspection pipe 1, changing the sliding friction between the main pipe 2 and the inner wall of the pipe into rolling friction, reducing the moving resistance of the device, and making it easier for the operator to push the main pipe 2 to move in the inspection pipe 1 and adjust the repair position.

[0022] The outer wall of the inspection pipe 1 is provided with a repair port 21, and the inner lining repair patch 5 is pasted on the inner wall of the repair port 21. One end of the outer wall of the inspection pipe 1 is provided with a well chamber 22, and the water inlet hose 13 and the air inlet hose 15 are both located inside the well chamber 22.

[0023] Through the above scheme, the repair port 21 is the damaged or leaking part of the inspection pipe 1 that needs to be repaired. Under the compression of the airbag 4, the inner lining repair patch 5 can be tightly pasted to the inner wall of the repair port 21, and the sealing performance of the inner lining repair patch 5 is used to seal the damaged area, thereby realizing the pipe repair. The well chamber 22 serves as the ground operation space for the inspection pipe 1. The water inlet hose 13 and the air inlet hose 15 are set in the well chamber 22, which makes it convenient for operators to connect to the external water and air sources. It also makes it convenient for operators to observe the working status of the device in the well chamber 22 and adjust parameters such as water pressure and air pressure in a timely manner to ensure the smooth progress of the repair process.

[0024] Working principle: First, outside the well chamber 22, the inner lining repair patch 5 is fixed to the outer periphery of the airbag 4 by the binding sleeve. Then, the operator prepares to work inside the well chamber 22. According to the length of the inspection pipe 1, a suitable number of extension pipes 14 are screwed to the end of the main pipe 2 away from the motor seat 6. Then, the air inlet hose 15 is connected to the end of the extension pipe 14, and the water inlet hose 13 is connected to the end of the connecting pipe 12. At the same time, the binocular camera 9 is connected to the external display device, and the motor 7 is connected to the external power supply.

[0025] Next, push the main pipe 2 to allow the entire device to enter the inspection pipe 1. At this time, the pulleys 19 on the guide rings 16 at both ends of the main pipe 2 are in contact with the inner wall of the inspection pipe 1. The spring 20 adaptively adjusts the extension length of the telescopic column 18 according to the diameter of the inspection pipe 1 to maintain coaxiality and ensure that the pulleys 19 are always in contact with the inner wall to reduce movement resistance. The operator pushes the device step by step through the well chamber 22, and at the same time starts the motor 7. The motor 7 drives the T-shaped frame 8 to rotate. The binocular camera 9 rotates with the T-shaped frame 8 to capture the internal image of the inspection pipe 1. The image is transmitted to the external display device in real time. The operator can accurately locate the repair port 21 through the image. When the airbag 4 and the inner lining repair patch 5 move to the repair port 21, the pushing device is stopped.

[0026] Then, the external water source is activated. The water source enters the connecting pipe 12 through the inlet hose 13, and then is delivered to the nozzle 10 through the outlet hose 11. The rotating nozzle 10 sprays high-pressure water to rinse the repair port 21 and the surrounding inner wall of impurities. After cleaning, the water source is turned off. Then, the external air source is activated. The air source enters the main pipe 2 through the air inlet hose 15 and the extension pipe 14, and then enters the air bag 4 through the inflation port 3. The air bag 4 gradually inflates, causing the inner lining repair patch 5 on the outer wall to fit tightly against the inner wall of the inspection pipe 1, especially at the repair port 21. The air bag 4 is kept inflated for a period of time to ensure that the inner lining repair patch 5 is firmly attached. This time can be determined by the construction personnel according to the material instructions or the ambient temperature.

[0027] Finally, after the inner lining repair patch 5 is firmly attached, the external air source is turned off, the gas inside the airbag 4 is released, causing the airbag 4 to contract. Then, the operator pulls the main pipe 2 inside the well chamber 22 to remove the entire device from the inspection pipe 1, completing the trenchless pipeline repair operation. The entire process does not require excavation of the ground. Through the device's expandable diameter, precise positioning, and cleaning functions, the pipeline repair is completed efficiently.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A trenchless pipeline repair structure with an expandable diameter sealing liner, comprising a main pipe (2) located inside a maintenance pipe (1), characterized in that, An air inlet (3) is connected and fixedly connected to the outer wall of the main tube (2), and an air bag (4) is provided on the outer wall of the main tube (2) outside the air inlet (3). An inner lining repair patch (5) is provided around the outer wall of the air bag (4). The outer wall of one end of the main pipe (2) is fixedly connected to a motor base (6) by a flange, and a motor (7) is fixedly connected to the inner wall of the motor base (6) by screws. The output shaft of the motor (7) is fixedly connected to a T-shaped frame (8) by a coupling. A binocular camera (9) and a nozzle (10) are respectively installed at both ends of the top outer wall of the T-shaped frame (8). A water outlet hose (11) is fixedly connected to the bottom outer wall of the nozzle (10), and a connecting pipe (12) is fixedly connected to the outer wall of one end of the water outlet hose (11). A water inlet hose (13) for connecting to an external water source is fixedly connected to the outer wall of one end of the connecting pipe (12).

2. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 1, characterized in that, The connecting pipe (12) is installed through the inner walls of both ends of the main pipe (2).

3. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 1, characterized in that, The outer wall of the main pipe (2) away from the motor base (6) is screwed with adjacent extension pipes (14), and the outer wall of one end of the extension pipe (14) is screwed with an air inlet hose (15) for connecting to an external air source.

4. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 1, characterized in that, Guide rings (16) are installed at both ends of the outer wall of the main tube (2), and mounting sleeves (17) are embedded around the outer wall of the guide rings (16). A telescopic column (18) is slidably connected to the inner wall of the mounting sleeve (17), and a pulley (19) is installed on the outer wall of one end of the telescopic column (18). A spring (20) is fixedly connected between the mounting sleeve (17) and the telescopic column (18).

5. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 4, characterized in that, The pulley (19) slides on the inner wall of the inspection tube (1), and the guide ring (16) is located at both ends of the airbag (4).

6. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 1, characterized in that, The outer wall of the inspection tube (1) is provided with a repair port (21), and the inner lining repair sticker (5) is pasted on the inner wall of the repair port (21).

7. The expandable diameter sealing liner structure for trenchless pipeline repair according to claim 3, characterized in that, The outer wall of one end of the inspection pipe (1) is provided with a well chamber (22), and the water inlet hose (13) and the air inlet hose (15) are both located inside the well chamber (22).

Images