Detachable emergency leaking stoppage device for river channel bottom pipe jacking construction

Abstract

The utility model discloses a detachable emergency leaking stoppage device for river channel bottom pipe jacking construction, which is characterized in that a fixed frame body is fixed at a position, corresponding to a hole, of a working well, a sleeve is arranged on the fixed frame body, the sleeve is fixedly mounted on the hole, an annular water stop plate is arranged on the inner wall of the sleeve, an annular emergency leaking stoppage mechanism is further arranged in the sleeve, and the annular water stop plate is fixedly mounted on the hole. The annular emergency leaking stoppage mechanism is installed in an annular gap between the casing pipe and the pipe jacking section and comprises an annular fixing piece and an annular plugging component, the annular fixing piece is fixedly installed on the inner wall of the casing pipe, and the annular plugging component is arranged on the annular fixing piece. The annular plugging component has a non-working contraction state and a working expansion state. According to the detachable emergency leaking stoppage device for river channel bottom pipe jacking construction, when a leakage emergency situation occurs, water is injected into the annular plugging component, the annular plugging component rapidly expands to an expansion state, a pipe jacking section is tightly wrapped, and plugging of a leakage part is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking construction technology, and in particular to a detachable emergency leak sealing device for pipe jacking construction at the bottom of river channels. Background Technology

[0002] In the field of municipal engineering construction, pipe jacking technology, as the core process of trenchless pipeline laying, is widely used in engineering scenarios that cross complex terrains such as rivers, railways, and highways due to its advantages such as minimal disturbance to the surrounding environment and outstanding construction efficiency.

[0003] Pipe jacking construction utilizes the thrust of the main jacking cylinder and intermediate sections between pipes to push the tool pipe or tunneling machine through the soil layer from the working shaft to the receiving shaft for hoisting. Riverbeds are mostly alluvial soil or gravel layers, with loose geological structures and extremely high water content. Combined with the continuous dynamic water pressure from the river, gaps exist between the pipe and the tunnel opening during pipe jacking. These gaps need to be sealed with water-stopping devices to prevent water seepage that could damage equipment and cause safety accidents. Existing water-stopping devices for pipe jacking construction lack emergency leak-stopping structures, making them ineffective at blocking groundwater at the riverbed during construction in case of sudden water or sand inrushes. Utility Model Content

[0004] The purpose of this invention is to provide a detachable emergency leak-sealing device for pipe jacking construction at the bottom of a river channel, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A detachable emergency leak-sealing device for riverbed pipe jacking construction includes a fixed frame, which is fixed at a position corresponding to the working well and the opening. The fixed frame has an installation port corresponding to the opening, and a sleeve is fixedly installed on the installation port. The sleeve is fixedly installed on the opening, and an annular water-stop plate is provided on the inner wall of the sleeve. The inner diameter of the annular water-stop plate matches the outer diameter of the pipe section to be constructed. An annular emergency leak-sealing mechanism is also provided inside the sleeve, installed in the annular gap between the sleeve and the pipe section. The annular emergency leak-sealing mechanism includes an annular fixing member and an annular sealing member. The annular fixing member is fixedly installed on the inner wall of the sleeve, and the annular sealing member is disposed on the annular fixing member. The annular sealing member has a non-working contracted state and a working expanded state. In the expanded state, the annular sealing member is fitted and fixed to the pipe section.

[0007] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction includes an annular fixing side plate, a first annular side plate on one side of the annular fixing side plate, and a second annular side plate on the other side of the annular fixing side plate, wherein the annular fixing side plate is fixedly connected to the inner wall of the sleeve.

[0008] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction has an annular fixed side plate, a first annular side plate, and a second annular side plate connected to form a first annular opening.

[0009] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction includes an annular sealing component and an annular water-filled body, with the annular water-filled body partially fixed inside the first annular opening.

[0010] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction includes an annular sealing component comprising an upper annular connecting surface, an annular sealing side surface, and a lower annular connecting surface connected in sequence. The upper annular connecting surface, the annular sealing side surface, and the lower annular connecting surface form a second annular opening with an opening.

[0011] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction has annular elastic connection parts on both the upper and lower annular connection surfaces, and the annular elastic connection parts are fixedly connected to the first annular side plate and the second annular side plate.

[0012] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction has an installation cavity formed between the first and second annular openings for installing the annular water-filled body. The fixed frame is provided with a water inlet, which is connected to the annular water-filled body through a water inlet pipe.

[0013] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction includes an annular water-filled body with multiple radial water-filled structures arranged sequentially along the circumference of the annular body.

[0014] The aforementioned detachable emergency leak-sealing device for riverbed pipe jacking construction also includes an elastic connector, which is disposed between the annular sealing side and the annular fixed side plate. There are multiple elastic connectors, and the annular body is provided with mounting holes for installing the elastic connectors.

[0015] In the above technical solution, the detachable emergency leak-stopping device for riverbed pipe jacking construction provided by this utility model has a fixed frame fixed at the position corresponding to the working well and the opening. A sleeve is fixedly installed on the installation port of the fixed frame. The inner wall of the sleeve is provided with an annular water-stopping plate that matches the outer diameter of the pipe section to be constructed. An annular emergency leak-stopping mechanism is also provided inside the sleeve. The annular emergency sealing mechanism is installed in the annular gap between the sleeve and the pipe section. The annular emergency leak-stopping mechanism includes an annular fixing component and an annular sealing component. In this way, when the pipe section passes through the sleeve, under normal construction conditions, the annular water-stopping plate initially plays a water-stopping role, tightly fitting the outer wall of the pipe section and blocking part of the water flow. In the event of a leakage emergency, water is quickly injected into the annular sealing component through the water injection port. The annular sealing component quickly expands to the expanded state, tightly wrapping the pipe section, and achieving efficient sealing of the leakage part. In the face of emergencies such as sudden water and sand inrush, it effectively prevents groundwater and silt from the bottom of the river from flowing into the working well during construction, ensuring the safety of construction personnel and the normal operation of construction equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the installation of a detachable emergency leak-sealing device for riverbed pipe jacking construction provided in this embodiment of the utility model;

[0018] Figure 2 A front view of the detachable emergency leak-sealing device for riverbed pipe jacking construction provided in this embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the annular emergency leak-sealing mechanism provided in this embodiment of the utility model;

[0020] Figure 4 A schematic diagram illustrating the installation of the elastic connector provided in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the elastic connector provided in an embodiment of the present utility model;

[0022] Figure 6 A cross-sectional view of the annular mounting telescopic body provided in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fixed frame; 11. Working well; 12. Opening; 13. Installation port; 2. Sleeve; 21. Annular waterstop plate; 3. Annular emergency leak-stopping mechanism; 31. Annular fixing component; 311. Annular fixed side plate; 312. First annular side plate; 313. Second annular side plate; 314. First annular opening; 32. Annular sealing component; 33. Annular water-filling body; 331. Annular body; 332. Radial water-filling structure; 34. Annular sealing component; 41. Upper annular connecting surface; 342. Annular sealing side; 343. Lower annular connecting surface; 344. Second annular opening; 345. Annular elastic connecting part; 35. Water inlet; 36. Elastic connector; 361. Movable rod; 362. Fixed rod; 363. Axial movement channel; 364. Annular end limiting plate; 365. Circular moving block; 366. Spring component; 37. Annular installation telescopic body; 371. Installation cavity; 4. Jacking pipe section. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-6 As shown, this utility model provides a detachable emergency leak-sealing device for riverbed pipe jacking construction, including a fixed frame 1, which is fixed at the position corresponding to the opening 12 of the working well 11. The fixed frame 1 is provided with an installation port 13 corresponding to the opening 12. A sleeve 2 is fixedly installed on the installation port 13 and fixedly installed on the opening 12. An annular water-stop plate 21 is provided on the inner wall of the sleeve 2. The inner diameter of the annular water-stop plate 21 matches the outer diameter of the pipe section 4 to be constructed. An annular emergency leak-sealing machine is also provided inside the sleeve 2. Structure 3, the annular emergency leak-sealing mechanism 3 is installed in the annular gap between the casing 2 and the jacking pipe section 4. The annular emergency leak-sealing mechanism 3 includes an annular fixing member 31 and an annular sealing member 32. The annular fixing member 31 is fixedly installed on the inner wall of the casing 2, and the annular sealing member 32 is set on the annular fixing member 31. The annular sealing member 32 has an annular water filling cavity inside. The annular sealing member 32 has a non-working contracted state and a working expanded state. In the expanded state, the annular sealing member 32 is fitted and fixed to the jacking pipe section 4.

[0027] Specifically, the fixing frame 1 is rectangular or square, made of steel. It can be fixed to the steel sheet piles of the working well 11, or it can be fixed to the working well 11 at the corresponding position of the opening 12 using bolts pre-embedded in the wall of the working well 11. After use, the fixing frame 1 can be disassembled for reuse. The fixing frame 1 has an installation opening 13, which corresponds to and is the same size as the opening 12. The sleeve 2 is made of seamless steel pipe, with a wall thickness capable of withstanding the complex water and soil pressure at the bottom of the river. The sleeve 2 is connected to the installation opening 13 by welding using argon arc welding to ensure the sealing and strength of the connection. Part of the sleeve 2 is located inside the opening 12, and the other end of the sleeve 2 can also be fixed to the inner wall of the opening 12 using relevant structures. The annular waterstop 21 is fixedly installed on the inner wall of the sleeve 2. The annular waterstop 21 can be made of rubber material and may also be equipped with a sealing gasket. The inner diameter of the annular waterstop 21 is designed according to the outer diameter specifications of common jacking pipe sections 4, and has good elasticity and sealing performance. The dimensions of the annular waterstop 21 correspond to the dimensions of the jacking pipe section 4. During normal jacking construction, the annular waterstop 21 and the jacking pipe section 4 work together to achieve the water-stopping effect.

[0028] In this embodiment, after the casing 2 is fixedly installed, an annular emergency leak-sealing mechanism 3 is installed within the annular gap between the casing 2 and the jacking pipe section 4. The annular emergency leak-sealing mechanism 3 is used to perform a sealing operation under special circumstances to prevent water from entering the working well 11 from the opening 12. The annular emergency leak-sealing mechanism 3 includes an annular fixing member 31 and an annular sealing member 32. The annular fixing member 31 is fixedly installed on the inner wall of the casing 2. After the annular fixing member 31 is fixedly installed on the inner wall of the casing 2, there is still an annular gap between the annular fixing member 31 and the outer wall of the jacking pipe section 4. The annular sealing member 32 is located in this annular gap. The leak-sealing mechanism 3 is fixedly installed on the annular fastener 31. The annular sealing member 32 has an annular water-filling chamber inside, which is connected to an external pumping mechanism to perform water injection or pumping operations. This allows the annular sealing member 32 to have a non-working contracted state and an operating expanded state. When the annular sealing member 32 is in the non-working contracted state, it does not contact the outer wall of the jacking pipe section 4, and water is stopped by the annular water-stop plate 21 cooperating with the jacking pipe section 4. When the annular sealing member 32 is filled with water and is in the expanded state, it fits and is fixed to the jacking pipe section 4, thus achieving the sealing effect. After use, the fixing frame 1 can be disassembled, allowing the fixing frame 1, sleeve 2, and annular emergency leak-sealing mechanism 3 to be reused.

[0029] This utility model provides a detachable emergency leak-sealing device for riverbed pipe jacking construction. A fixed frame 1 is fixed at a position corresponding to the working well 11 and the opening 12. A sleeve 2 is fixedly installed on the mounting opening 13 of the fixed frame 1. An annular water-stop plate 21 matching the outer diameter of the pipe section 4 to be constructed is installed on the inner wall of the sleeve 2. An annular emergency leak-sealing mechanism 3 is also installed inside the sleeve 2, within the annular gap between the sleeve 2 and the pipe section 4. The annular emergency leak-sealing mechanism 3 includes an annular fixing member 31 and an annular sealing member 32. Thus, when the pipe section... When section 4 passes through casing 2, under normal construction conditions, the annular waterstop 21 initially plays a water-stopping role, tightly fitting the outer wall of the pipe section and blocking part of the water flow. In the event of an emergency of leakage, water is quickly injected into the annular sealing component 32 through the water injection port 35. The annular sealing component 32 quickly expands to the expanded state, tightly wrapping the jacking pipe section 4, achieving efficient sealing of the leakage part. In the face of emergencies such as sudden water and sand inrush, it effectively prevents groundwater and silt from the bottom of the river from flowing into the working well 11 during construction, ensuring the safety of construction personnel and the normal operation of construction equipment.

[0030] In this embodiment, preferably, the annular fixing member 31 includes an annular fixing side plate 311, a first annular side plate 312 disposed on one side of the annular fixing side plate 311, and a second annular side plate 313 disposed on the other side of the annular fixing side plate 311. The annular fixing side plate 311 is fixedly connected to the inner wall of the sleeve 2. The annular fixing side plate 311, the first annular side plate 312, and the second annular side plate 313 are connected to form a first annular opening 314 with an opening. The annular sealing member 32 is partially located in the first annular opening 314. The annular fixing side plate 311 and the inner wall of the sleeve 2 can be fixedly connected by multiple bolts. The first annular side plate 312 and the second annular side plate 313 are respectively fixedly connected to both sides of the annular fixing side plate 311. The first annular opening 314 formed by the annular fixing side plate 311, the first annular side plate 312, and the second annular side plate 313 faces the jacking direction of the jacking pipe section 4. The inner diameter of the opening of the first annular opening 314 is larger than the outer diameter of the jacking pipe section 4. Triangular reinforcing ribs are provided at the connection points between the first annular side plate 312 and the annular fixed side plate 311, and between the second annular side plate 313 and the annular fixed side plate 311.

[0031] In this embodiment, preferably, the annular sealing member 32 includes an annular sealing member 34 and an annular water-filling body 33. The annular sealing member 34 includes an upper annular connecting surface 341, an annular sealing side surface 342, and a lower annular connecting surface 343 connected in sequence. The upper annular connecting surface 341, the annular sealing side surface 342, and the lower annular connecting surface 343 form a second annular opening 344 with an opening. Thus, the cross-sectional shape of the annular sealing member 34 is similar to a C-shape. Both the upper annular connecting surface 341 and the lower annular connecting surface 343 are provided with annular elastic connecting portions 345. The material of the annular elastic connecting portions 345 is neoprene rubber, and the cross-section of the annular elastic connecting portions 345 is corrugated, thereby increasing the radial expansion and contraction performance of the annular elastic portion. The annular elastic connecting portions 345 are fixedly connected to the first annular side plate 312 or the second annular side plate 313.

[0032] In this embodiment, preferably, the annular sealing member 32 and the annular fixing member 31 are connected to form an internally hollow annular mounting telescopic body 37. An installation cavity 371 for installing the annular water-filled body 33 is formed between the first annular opening 314 and the second annular opening 344. The installation cavity 371 is the internal chamber of the annular mounting telescopic body 37. The annular water-filled body 33 is installed in the installation cavity 371. A water inlet 35 is provided on the fixing frame 1. The water inlet 35 is connected to the annular water-filled body 33 through a water inlet pipe. The annular water-filled body 33 includes an annular body 331. Multiple radial water-filling structures 332 are sequentially arranged on the annular body 331.

[0033] When the annular water-filled body 33 is in a non-working state, the annular installation expansion body 37 formed by the connection of the annular sealing member 32 and the annular fixing member 31 is in a contracted state. At this time, the annular installation expansion body 37 maintains a gap with the jacking pipe section 4, which does not affect the normal jacking of the jacking pipe section 4. When leakage is detected between the sleeve 2 and the jacking pipe section 4, high-pressure water is injected into the annular water-filled body 33 through the water injection port 35. The annular water-filled body 33 expands under the action of water pressure, and the annular installation expansion body 37 expands towards the jacking pipe section 4 under the action of the annular water-filled body 33 (during this process, the annular water-filled body 33 presses against the annular sealing member 34, thereby causing the annular elastic connection part 345 to stretch radially), until the annular sealing side 342 of the annular sealing member 34 gradually fits against the outer wall of the pipe section. At the same time, the annular water-filled body 33 is also tightly squeezed with the annular fixing side plate 311, the first annular side plate 312 and the second annular side plate 313 to prevent the annular sealing member 32 from moving outward.

[0034] In this embodiment, preferably, it also includes an elastic connector 36, which is disposed between the annular sealing side 342 and the annular fixed side plate 311. The elastic connector 36 is arranged radially along the annular mounting telescopic body 37. There are multiple elastic connectors 36, which are arranged sequentially at intervals along the circumference of the annular mounting telescopic body 37. The annular body 331 is provided with mounting holes for installing the elastic connectors 36. The elastic connector 36 includes a movable rod 361 and a fixed rod 362, both made of steel. One end of the fixed rod 362 is fixedly installed on the inner wall of the annular fixed side plate 311, and one end of the movable rod 361 is fixedly installed on the inner wall of the annular sealing side plate 342. The fixed rod 3622 is provided with an axial movement channel 363 along the axial direction. The axial movement channel 363 forms an opening at the end of the fixed rod 362 away from the annular fixed side plate 311. An annular end limiting plate 364 is provided on the opening. The movable rod 361 is movably connected in the axial movement channel 363. A circular moving block 365 is provided at the end of the movable rod 361 away from the annular sealing side plate 342. The circular moving block 365 is slidably connected in the axial movement channel 363. A spring 366 is provided between the circular moving block 365 and the annular end limiting plate 364.

[0035] When the annular water-filled body 33 is in a non-working state, the spring member 366 is at its initial length. When high-pressure water is injected into the annular water-filled body 33 through the water inlet 35, the annular water-filled body 33 expands under water pressure. The annular water-filled body 33 presses against the annular sealing member 34, thereby causing the annular elastic connecting part 345 to stretch radially. During this process, the circular moving block 365 moves towards the annular end limiting plate 364, thereby pressing against the spring member 366, causing the spring member 366 to be in a compressed state until the annular sealing side 342 of the annular sealing member 34 gradually fits against the outer wall of the pipe section. Thus, when the water in the annular water-filled body 33 is pumped out, the annular sealing member 34 can return to its initial non-working state under the action of the annular elastic connecting part 345 and the spring member 366. At the same time, by setting multiple elastic connecting parts 36, radial support force can be provided for the annular sealing member 32, which can prevent the annular sealing member 32 from moving outward towards the opening 12.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A detachable emergency leak-sealing device for pipe jacking construction at the bottom of a river channel, characterized in that, The system includes a fixed frame, which is fixed at a position corresponding to the opening of the working well. The fixed frame has an installation port corresponding to the opening, and a sleeve is fixedly installed on the installation port. The sleeve is fixedly installed on the opening, and an annular water-stop plate is provided on the inner wall of the sleeve. The inner diameter of the annular water-stop plate matches the outer diameter of the jacking pipe section to be constructed. An annular emergency leak-stopping mechanism is also provided inside the sleeve, installed in the annular gap between the sleeve and the jacking pipe section. The annular emergency leak-stopping mechanism includes an annular fixing element and an annular sealing component. The annular fixing element is fixedly installed on the inner wall of the sleeve, and the annular sealing component is disposed on the annular fixing element. The annular sealing component has a non-working contracted state and a working expanded state. In the expanded state, the annular sealing component is fitted and fixed to the jacking pipe section.

2. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 1, characterized in that, The annular fastener includes an annular fixing side plate arranged in sequence, a first annular side plate arranged on one side of the annular fixing side plate, and a second annular side plate arranged on the other side of the annular fixing side plate. The annular fixing side plate is fixedly connected to the inner wall of the sleeve.

3. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 2, characterized in that, The annular fixed side plate, the first annular side plate, and the second annular side plate are connected to form a first annular open cavity with an opening.

4. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 3, characterized in that, The annular sealing component includes an annular sealing element and an annular water-filling body, with the annular water-filling body partially fixed inside the first annular opening.

5. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 4, characterized in that, The annular sealing element includes an upper annular connecting surface, an annular sealing side surface, and a lower annular connecting surface connected in sequence. The upper annular connecting surface, the annular sealing side surface, and the lower annular connecting surface form a second annular opening with an opening.

6. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 5, characterized in that, Both the upper and lower annular connecting surfaces are provided with annular elastic connecting portions, which are fixedly connected to the first annular side plate and the second annular side plate.

7. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 6, characterized in that, An installation cavity is formed between the first annular opening and the second annular opening for installing the annular water-filled body. A water inlet is provided on the fixed frame, and the water inlet is connected to the annular water-filled body through a water inlet pipe.

8. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 7, characterized in that, The annular water-filled body includes an annular body, on which multiple radial water-filled structures are sequentially arranged along the circumference.

9. The detachable emergency leak-sealing device for riverbed pipe jacking construction according to claim 8, characterized in that, It also includes elastic connectors disposed between the annular sealing side and the annular fixing side plate. There are multiple elastic connectors, and the annular body is provided with mounting holes for installing the elastic connectors.

Images