A gas bag plugging device for an ultra-deep rain sewage well

Abstract

The utility model discloses a kind of air bag plugging devices for super deep rain sewage well, to solve the problem of super deep well air bag plugging construction safety hazard and positioning difficulty. Device includes the hanger assembly of well mouth, hoisting pipeline, push assembly, air bag and inflation pipe, hoisting pipeline is formed by probe rod splicing, built-in lower and locking unit;Push assembly contains horizontal push structure, bottom has laser range finder and camera, and remote communication with external control unit. Air bag is three-layer composite structure, with pressure sensor inside. The device realizes remote operation, reduces safety hazard;Through laser ranging and visual identification, air bag is accurately positioned;Adapt to super deep well environment, guarantee plugging stability;Flexible and efficient operation, high degree of intelligence, suitable for super deep rain sewage well plugging.

Description

Technical Field

[0001] This utility model relates to the technical field of airbag sealing devices, and in particular to an airbag sealing device for ultra-deep rainwater and sewage wells. Background Technology

[0002] In urban underground pipe networks, the safe operation and maintenance of stormwater and sewage pipes is a crucial aspect of ensuring urban flood control, environmental protection, and public safety. During pipe repair, renovation, or emergency repair operations, airbag sealing technology has become a key method for temporarily blocking water flow due to its advantages such as flexibility and reusability.

[0003] Traditional airbag sealing technology is primarily designed for stormwater and sewage wells of conventional depth (typically less than 10 meters), achieving sealing through the friction between the inflated airbag and the pipe wall, as well as its own pressure resistance. However, with the deepening development of urban underground space, the depth of stormwater and sewage wells is constantly increasing (some ultra-deep wells can reach depths of over 20 meters). The resulting water head pressure, complex geological conditions, and confined working environments pose significant challenges to existing airbag sealing technologies. Currently, conventional airbags have significant drawbacks in ultra-deep well scenarios:

[0004] Firstly, the high operational risks and low emergency response efficiency in ultra-deep well operations further limit the application of traditional technologies. Secondly, increased well depth makes airbag positioning difficult, and traditional mechanical pushing devices struggle to accurately control the airbag's descent position. Therefore, there is an urgent need for a specialized airbag sealing device for ultra-deep stormwater and sewage wells to overcome key technological bottlenecks such as high water pressure adaptability, intelligent pressure control, and remote precision operation, thereby meeting the pressing needs of safe operation and maintenance of modern urban underground pipe networks. Summary of the Invention

[0005] The technical problem to be solved by this utility model is that there are safety hazards and positioning difficulties in the construction of airbag plugging in ultra-deep wells.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an airbag sealing device for ultra-deep rainwater and sewage wells, including a hanger assembly arranged at the wellhead, a hoisting pipe connected to the hanger assembly, a pushing assembly connected to the bottom of the hoisting pipe, an airbag installed in a cavity on one side of the pushing assembly, and an inflation pipe connected to the airbag. The hoisting pipe is continuously spliced ​​together by several probes. The hoisting assembly is provided with a lowering unit and a locking unit. The pushing assembly is provided with a pushing structure for horizontally pushing the airbag. A laser rangefinder and a camera that are remotely connected to an external control unit are provided at the bottom of the pushing assembly.

[0007] Preferably, the pushing component includes a receiving frame with a cavity on one side, the airbag is located inside the receiving frame, the airbag is in a folded state, and the axis of the airbag is horizontal and faces the outside of the cavity of the receiving frame.

[0008] Preferably, a cylinder is fixedly installed on the side wall of the receiving frame away from the cavity. The output end of the cylinder is connected to an adsorption plate, and the adsorption plate is connected to a negative pressure tube, which adsorbs one end of the airbag through negative pressure.

[0009] Preferably, the probe includes a hollow tube with a necked section at the top. The outer diameter of the movable end of the necked section is equal to the inner diameter of the bottom end of the tube. The necked section and the bottom end of the tube are respectively provided with pin holes.

[0010] Preferably, an annular limiting plate is provided on the outer wall of the necked section, and when the bottom end of the previous probe rod contacts the limiting plate, the pin hole at the bottom end of the previous probe rod communicates with the pin hole of the next probe rod necked section.

[0011] Preferably, the lifting frame assembly includes a frame body, the lowering unit includes a lowering channel for the probe rod located at the top center of the frame body and winches located on both sides of the lowering channel, the movable end of the pull rope on the winch is connected to a hook, the two sides of the limiting plate are provided with lifting holes for the hooks to pass through, and the locking unit is located directly below the lowering channel.

[0012] Preferably, diagonal braces are provided on the frame on both sides of the lowering channel, and pulleys are installed at the top of the diagonal braces for the pull rope to pass through.

[0013] Preferably, the locking unit includes a mounting bracket fixed to both sides inside the frame, a hydraulic cylinder horizontally mounted on the mounting bracket, and a clamping block fixed to the movable end of the hydraulic cylinder. The movable end of the clamping block is arc-shaped, and the hydraulic cylinder is positioned towards the lowering channel.

[0014] Preferably, the fixed end of the clamping block is provided with an auxiliary rod along the movement direction of the hydraulic cylinder, and the auxiliary rod is slidably connected to the mounting frame.

[0015] Preferably, the airbag is provided with a butyl rubber layer, an aramid fiber layer and a polyurethane layer from the inside to the outside. A pressure sensor is composited in the aramid fiber layer. The pressure sensor is equidistant from the axis of the airbag and the number of pressure sensors is not less than eight.

[0016] This invention provides an airbag sealing device for ultra-deep rainwater and sewage wells, which has the following beneficial effects.

[0017] 1. The device enables remote delivery and operation of the airbags through a lifting frame assembly, hoisting pipeline, and pushing assembly, eliminating the need for personnel to enter the ultra-deep well and fundamentally avoiding the high risks faced by personnel in ultra-deep well operations. Simultaneously, the collaboration between the remote control unit, laser rangefinder, and camera allows operators to monitor the situation downhole from the wellhead, reducing unsafe factors during emergency response and significantly improving construction safety.

[0018] 2. The laser rangefinder at the bottom of the pushing component can accurately measure the distance between the airbag and the target position, and the camera can transmit downhole images in real time. The external control unit combines the data from both to remotely correct the airbag's descent trajectory. When it reaches the top of the target pipe opening, the attitude adjustment mechanism can ensure that the deviation between the airbag axis and the pipe centerline is within a small range. Combined with the horizontal pushing of the pushing structure, it can achieve precise positioning of the airbag in ultra-deep wells, overcoming the positioning difficulties of traditional mechanical pushing devices.

[0019] 3. The hoisting pipeline is composed of several probe rods spliced ​​together, and its length can be flexibly adjusted according to the well depth to adapt to ultra-deep well operations at different depths. The lowering and locking units of the hoisting assembly can stably control the lowering and fixing of the probe rods, while the cylinders and suction plates of the pushing assembly facilitate the operation of the airbags. The overall structural design makes the assembly, disassembly, and adjustment of the device more convenient, improving construction efficiency and emergency response speed. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] Figure 2 This is a structural schematic diagram of the hanger assembly in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the push component in an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the airbag in an embodiment of this utility model.

[0025] In the diagram: 1. Hanger assembly; 11. Frame; 12. Mounting bracket; 13. Clamping block; 14. Hydraulic cylinder; 15. Winch; 16. Pulley; 17. Hook; 2. Probe; 21. Limiting plate; 3. Pushing assembly; 31. Receiving frame; 32. Cylinder; 33. Adsorption plate; 4. Airbag; 41. Pressure sensor; 5. Inflation pipe; 6. Laser rangefinder; 7. Camera. Detailed Implementation

[0026] like Figure 1-4As shown, this utility model provides an airbag sealing device for ultra-deep rainwater and sewage wells, including a hanger assembly 1 arranged at the wellhead, a hoisting pipe connected to the hanger assembly 1, a pushing assembly 3 connected to the bottom of the hoisting pipe, an airbag 4 installed in a cavity on one side of the pushing assembly 3, and an inflation pipe 5 connected to the airbag 4. The hoisting pipe is continuously spliced ​​together by several probes 2. The hoisting assembly 1 is provided with a lowering unit and a locking unit. The pushing assembly 3 is provided with a pushing structure for horizontally pushing the airbag 4. The bottom of the pushing assembly 3 is provided with a laser rangefinder 6 and a camera 7 that are remotely connected to an external control unit.

[0027] The imported hoisting assembly 1 surrounds the opening of the sewage well. By continuously connecting and hoisting pipes to the hoisting assembly 1, the pushing assembly 3 is lowered, and the airbag 4 is lowered.

[0028] During construction, the airbag 4 is first folded axially and placed horizontally on the pushing assembly 3. The lowering unit then lowers the hoisting pipe, causing the pushing assembly 3 to move towards the well. During the lowering process, the laser rangefinder 6 and camera 7 are used to monitor the situation inside the well. A dual tilt sensor can also be installed on the hoisting pipe to ensure the airbag is horizontal. When the pushing assembly 3 is less than 1 meter from the pipe opening, the workers adjust the hoisting pipe on the hanger assembly 1 to adjust the angle of the pushing assembly 3 so that the airbag 4 inside the pushing assembly 3 is aligned with the center of the pipe opening. The pushing assembly 3 is then lowered until the airbag 4 and the pipe are on the same axis. The pushing assembly 3 is then controlled to push the airbag 4 into the pipe at a uniform speed, and the airbag 4 is inflated in stages through the inflation pipe 5. In the initial inflation stage (0-0.15MPa), the airbag 4 is inflated within 5 seconds for initial positioning. In the secondary pressure stabilization stage (0.15MPa-0.3MPa), the pressure of the airbag 4 is controlled to rise steadily, with a pressure rise rate ≤0.02MPa / s, to achieve sealing contact between the airbag 4 and the inner wall of the pipeline. Finally, in the tertiary compensation stage, the air pressure of the airbag 4 is dynamically adjusted based on feedback from the pressure sensor to maintain the sealing of the pipeline.

[0029] like Figure 1 and Figure 3 As shown. The pushing component 3 includes a receiving frame 31 with a cavity on one side. The airbag 4 is located inside the receiving frame 31, and the airbag 4 is in a folded state with its axis horizontal and facing outward from the cavity of the receiving frame 31. By keeping the airbag 4 in a folded state, it is easier to place the airbag 4 inside the receiving frame 31 and push the airbag 4 easily into the pipe. The airbag 4 is kept horizontal, so that after inflating, it fits tightly against the pipe.

[0030] like Figure 3As shown. A cylinder 32 is fixedly installed on the side wall of the receiving frame 31 away from the cavity. The output end of the cylinder 32 is connected to an adsorption plate 33, which is connected to a negative pressure tube. The adsorption plate 33 adsorbs one end of the airbag 4 through negative pressure. The negative pressure generated by the negative pressure tube makes the adsorption plate 33 stably connected to the end of the airbag 4. After the cylinder 32 pushes the airbag 4 into the pipeline, the adsorption plate 33 and the airbag 4 can be separated by inflating the negative pressure tube, the pushing component 3 can be retracted, and the sealing construction of the next pipeline can be carried out.

[0031] like Figure 1 and Figure 2 As shown. The probe 2 includes a hollow tube with a necked section at the top. The outer diameter of the movable end of the necked section is equal to the inner diameter of the bottom end of the tube. Pin holes are provided at the necked section and the bottom end of the tube, respectively. By setting the necked section, the probe 2 can be continuously inserted, and the probe 2 is stably connected after insertion through the cooperation of the pin and the pin hole.

[0032] like Figure 2 As shown. An annular limiting plate 21 is provided on the outer wall of the necked section. When the bottom end of the upper probe 2 contacts the limiting plate 21, the pin hole at the bottom end of the upper probe 2 communicates with the pin hole of the necked section of the lower probe 2. When splicing the probe 2 on the hanger assembly 1, the upper probe 2 is inserted into the top of the lower probe 2, so that the necked section at the top of the lower probe 2 enters the upper probe 2 and contacts the limiting plate 21, indicating that it is properly inserted and can be locked with a locking pin.

[0033] like Figure 1 and Figure 2 As shown. The hanging frame assembly 1 includes a frame body 11. The lowering unit includes a lowering channel for the probe 2 located at the top center of the frame body 1 and winches 15 located on both sides of the lowering channel. The movable end of the pull rope on the winch 15 is connected to a hook 17. The two sides of the limiting plate 21 are provided with lifting holes for the hook 17 to pass through. The locking unit is located directly below the lowering channel. When lowering the probe 2, the hook 17 is connected to the limiting plate 21 at the top of the probe 2, and the two winches 15 are controlled to unwind synchronously. During the unwinding process, the probe 2 moves steadily downward. When the probe 2 moves to the locking unit, the locking unit clamps the probe 2. The limiting plate 21 at the top of the probe 2 provides support for the probe 2. The hook 17 is manually removed, the upper probe 2 is inserted into the lower probe 2, and locked with a pin. The next section can then be lowered.

[0034] like Figure 2As shown, diagonal braces are installed on the frame 11 on both sides of the lowering channel, and pulleys 16 are installed at the top of the diagonal braces for the pull rope to pass through. By setting the pulleys 16, the position of the pull rope is ensured to be stable, and the pulleys 16 can reduce the wear of the pull rope.

[0035] like Figure 2 As shown. The locking unit includes mounting brackets 12 fixed to both sides inside the frame 11, a hydraulic cylinder 14 horizontally mounted on the mounting brackets 12, and a clamping block 13 fixed to the movable end of the hydraulic cylinder 14. The movable end of the clamping block 13 is arc-shaped, and the hydraulic cylinder 14 is positioned towards the lowering channel. During the lowering of the probe 2, the two hydraulic cylinders 14 are controlled to drive the corresponding clamping blocks 13 to move relative to each other, clamping the probe 2 so that the limiting plate 21 is located at the top of the clamping block 13. The clamping block 13 supports the limiting plate 21, thus supporting the entire hoisting pipe.

[0036] like Figure 2 As shown, to enhance the stability of the clamping block 13, an auxiliary rod is provided at the fixed end of the clamping block 13 along the movement direction of the hydraulic cylinder 14. The auxiliary rod is slidably connected to the mounting bracket 12. By providing the auxiliary rod to guide the clamping block 13, the clamping block 13 can be stably supported, thereby providing stable support for the probe rod 2.

[0037] like Figure 4 As shown. The airbag 4 consists of a butyl rubber layer, an aramid fiber layer, and a polyurethane layer from the inside out. A pressure sensor 41 is embedded within the aramid fiber layer. The pressure sensors 41 are equidistant from the axis of the airbag 4, and there are at least eight pressure sensors 41. The pressure sensors, combined with the airbag 4's three-stage inflation strategy (initial positioning-pressure stabilization-compensation), achieve ±2% sealing pressure stability, adapting to complex conditions such as sudden rises / falls in water level. The three-layer composite structure of the airbag 4 increases its pressure-bearing capacity to 0.5 MPa, a 150% improvement over traditional airbags; its dynamic impact resistance is improved by 2.3 times, effectively avoiding the risks of creep and tearing under high water pressure.

Claims

1. An airbag sealing device for ultra-deep stormwater and sewage wells, characterized in that: It includes a hanger assembly (1) arranged at the wellhead, a hoisting pipe connected to the hanger assembly (1), a push assembly (3) connected to the bottom of the hoisting pipe, an airbag (4) installed in a cavity on one side of the push assembly (3), and an inflation pipe (5) connected to the airbag (4). The hoisting pipe is continuously spliced ​​together by several probes (2). The hanger assembly (1) is equipped with a lowering unit and a locking unit. The push assembly (3) is equipped with a push structure for horizontally pushing the airbag (4). The bottom of the push assembly (3) is equipped with a laser rangefinder (6) and a camera (7) that are remotely connected to an external control unit.

2. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 1, characterized in that: The push component (3) includes a receiving frame (31) with a cavity on one side, the airbag (4) is located inside the receiving frame (31), the airbag (4) is in a folded state, and the axis of the airbag (4) is horizontal and faces the outside of the cavity of the receiving frame (31).

3. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 2, characterized in that: A cylinder (32) is fixedly installed on the side wall of the receiving frame (31) away from the cavity. The output end of the cylinder (32) is connected to an adsorption plate (33). The adsorption plate (33) is connected to a negative pressure tube and adsorbs one end of the airbag (4) through negative pressure.

4. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 1, characterized in that: The probe (2) includes a hollow tube body, with a necked section at the top of the tube body. The outer diameter of the movable end of the necked section is equal to the inner diameter of the bottom end of the tube body, and pin holes are provided at the necked section and the bottom end of the tube body respectively.

5. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 4, characterized in that: An annular limiting plate (21) is provided on the outer wall of the necked section, and when the bottom end of the previous probe (2) contacts the limiting plate (21), the pin hole at the bottom end of the previous probe (2) is connected to the pin hole of the necked section of the next probe (2).

6. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 5, characterized in that: The hanging frame assembly (1) includes a frame (11), and the lowering unit includes a lowering channel for the probe (2) located at the top center of the frame (11) and winches (15) located on both sides of the lowering channel. The movable end of the pull rope on the winch (15) is connected to a hook (17). The two sides of the limiting plate (21) are provided with lifting holes for the hook (17) to pass through. The locking unit is located directly below the lowering channel.

7. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 6, characterized in that: Both sides of the lowering channel are provided with diagonal bars on the frame (11), and the top of the diagonal bars is equipped with pulleys (16) for the pull rope to pass through.

8. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 6, characterized in that: The locking unit includes a mounting bracket (12) fixed on both sides inside the frame (11), a hydraulic cylinder (14) horizontally mounted on the mounting bracket (12), and a clamping block (13) fixed on the movable end of the hydraulic cylinder (14). The movable end of the clamping block (13) is arc-shaped, and the hydraulic cylinder (14) is positioned towards the lowering channel.

9. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 8, characterized in that: The fixed end of the clamping block (13) is provided with an auxiliary rod along the movement direction of the hydraulic cylinder (14), and the auxiliary rod is slidably connected to the mounting frame (12).

10. The airbag sealing device for ultra-deep stormwater and sewage wells as described in claim 1, characterized in that: The airbag (4) is provided with a butyl rubber layer, an aramid fiber layer and a polyurethane layer from the inside to the outside. A pressure sensor (41) is composited in the aramid fiber layer. The pressure sensor (41) is equidistant from the axis of the airbag (4), and the number of pressure sensors (41) is not less than eight.

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