A temporary plugging device for large-diameter pipeline leaks

Abstract

The present application belongs to the technical field of pipeline plugging, in particular to a temporary plugging device for large-diameter pipeline leakage, comprising a plugging element, a binding belt, an adjusting element and a line tightening element, one end of the binding belt is fixedly installed on one side of the plugging element, the other end of the binding belt is connected with the line tightening element, the adjusting element is arranged on the top of the plugging element, the line tightening element is installed on one side of the adjusting element, and a pressure stabilizing element is further arranged on the plugging element. Through the cooperative action of the binding belt, the line tightening element and the adjusting element, the plugging element can be accurately fixed at the pipeline leakage position, realizing rapid and effective plugging of the leakage position. The plugging element stably held by the binding belt can tightly fit the surface of the pipeline and form double-layer plugging protection at the pipeline leakage position, greatly improving the reliability of the sealing, effectively blocking the medium leakage and ensuring the sealing effect of the pipeline leakage position.

Description

Technical Field

[0001] This invention belongs to the field of pipeline sealing technology, and specifically relates to a temporary sealing device for leaks in large-diameter pipelines. Background Technology

[0002] After a hole appears in the side wall of a pipeline, temporary sealing work is required to prevent the internal material from continuing to leak to the outside, thus buying time for subsequent maintenance work.

[0003] A search revealed that Chinese patent application number 202020913726.5 discloses a rapid sealing device for pipeline leaks. A fixing rod and a base are fixedly installed on the upper surface of the sealing plate. A guide rod is fixedly installed on the upper surface of the base. A first retaining ring is attached to the middle of the side wall of the guide rod. A first retaining groove is formed on the upper surface of the first retaining ring. A rotating tube is fixedly installed on the lower surface of the first retaining ring. The inner wall of the rotating tube is attached to the side wall of the guide rod. A fixing rope is fixedly installed on the outer wall of the rotating tube. A top rod is fixedly installed on the upper surface of the guide rod. A spring is fixedly installed on the lower surface of the top rod. A second retaining ring is fixedly installed on the lower side wall of the spring. A second retaining groove is formed on the lower surface of the second retaining ring. The side wall of the second retaining groove engages with the side wall of the first retaining groove. This design allows for single-person, one-handed fixation of the device after sealing, while the other hand provides temporary fixation. The sealing operation is simple, requiring only a unidirectional rotation of the first retaining ring for fixation, thus simplifying the sealing process.

[0004] Regarding the aforementioned technologies, when fixing the sealing plate to the pipe with a fixing rope, it is necessary to rotate the two first retaining rings separately to tighten the fixing rope so that the sealing plate fits against the side wall of the pipe. This process is relatively slow. At the same time, because there are gaps between the rubber plate on the sealing plate and the side wall of the pipe, the sealing effect is not ideal simply because the sealing plate fits against the side wall of the pipe. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a temporary sealing device for leaks in large-diameter pipelines. This device, through the coordinated cooperation of the binding strap, tightening element, and adjusting element, can accurately fix the sealing element at the pipeline leak location, achieving rapid and effective sealing of the leak. The sealing element, firmly supported by the binding strap, can closely fit the pipeline surface and form a double-layer sealing protection at the pipeline leak location. This not only significantly improves the reliability of the seal but also effectively prevents media leakage, ensuring the sealing effect at the pipeline leak location.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A temporary sealing device for leaks in large-diameter pipelines includes a sealing element and a restraining strap. The sealing element is also provided with an adjusting element and a tightening element. One end of the restraining strap is fixedly installed on one side of the sealing element, and the other end of the restraining strap is connected to the tightening element. The adjusting element is located on the top of the sealing element, and the tightening element is installed on one side of the adjusting element. The sealing element is also provided with a pressure stabilizing element.

[0008] Preferably, the sealing component includes a sealing box, a corrugated pipe, a sealing plate, and a fixing frame. The sealing box is disposed inside the fixing frame, the corrugated pipe is disposed at the bottom of the sealing box, and the sealing plate is disposed at the bottom of the corrugated pipe. A sealing gasket is disposed at the bottom of the sealing plate, which facilitates the bottom of the sealing plate to fit tightly against the outer wall of the pipe. The fixing frame supports the sealing box, the corrugated pipe, and the sealing plate, ensuring that the middle part of the sealing plate is in contact with the outer wall of the pipe. Under the action of the restraint straps, the two ends of the sealing plate can be pulled towards the pipe, thereby ensuring that the sealing plate can fit tightly against the pipe.

[0009] Preferably, a fixing seat and a fixing rod are respectively provided at both ends of the sealing plate. The fixing seats are symmetrically arranged on both sides of the center line of the sealing plate. The two ends of the fixing rod are respectively fixedly installed on the fixing seats on both sides of the center line of the sealing plate. One end of the restraint strap is fixedly installed on the fixing rod at one end of the sealing plate, and the other end of the restraint strap passes through the fixing rod at the other end of the sealing plate and is connected to the tensioning member. The setting of the fixing seat facilitates the installation and use of the fixing rod, and the setting of the fixing rod facilitates the installation of the end of the restraint strap, ensuring the safety and stability of the restraint strap during operation.

[0010] Preferably, the fixing frame includes a support rod, vertical rods disposed at both ends of the support rod, and a top rod. The support rod is fixedly installed on the top of the sealing box, the vertical rods are fixedly installed on the two side walls of the sealing box, and the bottom of the vertical rods is fixedly installed on the sealing plate. The top rod is fixedly installed on the top of the vertical rods. The support rod and the vertical rods are provided to support the sealing box, the corrugated pipe, and the sealing plate, ensuring that the sealing box, the corrugated pipe, and the sealing plate are always in a stable state during operation.

[0011] A through hole is opened in the middle of the sealing plate, and a sealing plate is installed inside the through hole. A sealed space is formed between the sealing box, the bellows, and the sealing plate. The sealing plate is made of elastic material. An air inlet pipe is installed at the top of the sealing box. The through hole facilitates the installation of the sealing plate. Together with the sealing box and the bellows, a sealed space is formed. When the gas pressure in the sealing box is greater than the pressure in the pipeline, the gas pressure in the sealing box can press the sealing plate against the leak in the pipeline, thereby achieving the purpose of temporarily sealing the pipeline.

[0012] Preferably, the pressure stabilizing component includes an air tank symmetrically arranged on both sides of the sealing box, a piston, a pulling rod, a moving plate, a moving rod, a telescopic rod, a second spring, and a stabilizing rod. The air tank is connected to the sealing box. The piston is disposed inside the air tank. The two ends of the pulling rod are respectively connected to the piston and the moving plate. The moving rod is symmetrically arranged at both ends of the moving plate and is slidably connected to the vertical rod. A connecting block is also provided at the end of the moving rod. The stabilizing rod is fixedly installed on the connecting block and is slidably engaged with the vertical rod. The two ends of the telescopic rod are respectively fixedly installed on the connecting block and the vertical rod. The second spring is sleeved on... On the telescopic rod, the pressure stabilizer ensures that the pressure inside the sealing box remains stable when sealing a pipeline leak, guaranteeing the sealing quality of the device. When the pressure inside the sealing box increases, it pushes the piston away from the connection between the gas tank and the sealing box along the direction of the gas tank, thereby expanding the volume of the gas tank and absorbing excess pressure, keeping the pressure inside the sealing box stable. During the piston's movement, it compresses the second spring. When the pressure inside the sealing box decreases, the second spring causes the piston to move in the opposite direction, replenishing the pressure inside the sealing box and ensuring that the pressure inside the sealing box remains stable.

[0013] Preferably, the adjusting component includes a threaded rod, a handle, a lifting assembly, a push-pull rod, and a rotating arm. The two ends of the threaded rod are rotatably mounted on a top rod and a support rod, respectively. The handle is positioned above the top rod and is fixedly connected to the threaded rod. The lifting assembly is slidably mounted on a vertical rod and threadedly connected to the threaded rod. The rotating arms are symmetrically arranged on both sides of the sealing box and are rotatably mounted on the vertical rod. The two ends of the push-pull rod are rotatably mounted on the rotating arm and the lifting assembly, respectively. The tensioning element is located at the end of the rotating arm. The adjusting component is used to adjust the position of the tensioning element, ensuring that it is always below the end of the sealing plate. This ensures that when the restraint strap is tightened, the bottom of the sealing plate is tightly pressed against the outer wall of the pipe, thereby sealing any leaks in the pipe.

[0014] The lifting assembly includes a lifting plate and sliding sleeves disposed at both ends of the lifting plate. The sliding sleeves are slidably mounted on the vertical rods at both ends of the support rod, and the lifting plate is threadedly connected to the threaded rod.

[0015] Preferably, the tensioning component includes a connecting rod, a mounting base, a winding roller, a handle, a rotating shaft, a first bevel gear, and a second bevel gear. A first upright and a second upright are respectively provided at both ends of the connecting rod. The first upright and the second upright are respectively mounted on the rotating arms on both sides of the sealing box. The mounting base is fixedly mounted on the first upright. The rotating shaft is rotatably mounted on the mounting base. The first bevel gear is fixedly mounted at the bottom of the rotating shaft. The handle is fixedly mounted at the top of the rotating shaft. Fixed shafts are fixedly mounted at both ends of the winding roller. The fixed shafts at both ends of the winding roller are rotatably mounted on the rotating arms on both sides of the sealing box. The second bevel gear is mounted on the fixed shaft. The first bevel gear meshes with the second bevel gear.

[0016] A through hole is made in the middle of the winding roller, and fixing grooves are made on both sides of the center line of the winding roller. Screws are installed in the fixing grooves. The other end of the binding strap passes through the through hole and is fixed to the winding roller by the screws. The tensioning device is used to wind up the binding strap, so that the sealing plate is pulled tight to the outer wall of the pipe under the action of the binding strap, ensuring that the bottom of the sealing plate can be in close contact with the pipe, and finally achieving the purpose of sealing the pipe leak.

[0017] Preferably, a backstop is also provided on the second upright. The backstop includes a vertical shaft, a mounting block, a guide rod, a third bevel gear, a fourth bevel gear, a first spring, a lifting frame, and a limiting component. The mounting block is fixedly mounted on the second upright, and the vertical shaft is rotatably mounted on the mounting block. A limiting block is provided at the top of the vertical shaft. The third bevel gear is fixedly mounted at the bottom of the vertical shaft, and the fourth bevel gear is fixedly mounted on a fixed shaft at the other end of the winding roller, with the third and fourth bevel gears meshing. Fixed blocks are provided on both sides of the mounting block, with two fixed blocks arranged one above the other on the same side of the mounting block. The two ends of the guide rod are respectively fixedly mounted... The lifting frame is slidably mounted on the guide rod on a fixed block set at one above the other. A limit plate is provided on the lifting frame, and a limit groove is opened at the bottom of the limit plate. The limit groove cooperates with the limit block. The first spring is sleeved on the guide rod. The limit member is set on the connecting rod and is connected to the limit plate. The anti-reverse member transmits the rotation of the winding roller synchronously to the vertical shaft through the meshing of the vertical shaft, the third bevel gear and the fourth bevel gear. By using the snap-fit ​​cooperation between the limit block and the limit groove at the bottom of the limit plate, the rotation of the vertical shaft can be directly restricted. Furthermore, the rotational freedom of the winding roller is restricted through the meshing transmission relationship of the third bevel gear and the fourth bevel gear.

[0018] Preferably, the lifting frame includes a sliding block, a lifting rod, and a connecting rod. The sliding block is slidably mounted on the guide rod and is slidably engaged with the mounting block. The lifting rod is symmetrically arranged at both ends of the connecting rod and is fixedly connected to the sliding block. The limiting plate is fixedly mounted on the connecting rod. In the anti-reverse state, the lifting frame drives the limiting plate to descend, so that the limiting groove and the limiting block are tightly engaged, achieving reliable limiting of the vertical shaft. In the unlocked state, the lifting frame drives the limiting plate to rise, so that the limiting block is disengaged from the limiting groove, releasing the rotation restriction of the vertical shaft, ensuring convenient operation and rapid response of the anti-reverse component.

[0019] Preferably, the limiting component includes a buckle, a push rod, a sliding plate, and a push block. Guide grooves are formed on both sides of the connecting rod, and a groove is formed at the bottom of the sliding plate. The groove slides with the connecting rod. A guide block is formed on the inner wall of the groove, and the guide block slides with the guide groove. The push block is fixedly installed on the top of the sliding plate. The two ends of the push rod are rotatably installed on the limiting plate and the sliding plate, respectively. The buckles are symmetrically arranged on both sides of the connecting rod and cooperate with the second upright. The sliding plate is limited by the sliding cooperation between the groove and the connecting rod, and the limiting mechanism between the guide block and the guide groove. The mechanism works in conjunction with the connecting rod to achieve smooth sliding along its length, preventing deviation or wobbling during the sliding process. The two ends of the push rod are rotatably connected to the limiting plate and sliding plate respectively, converting the horizontal sliding of the sliding plate into the vertical lifting motion of the limiting plate, thus achieving linkage transmission between the limiting component and the lifting frame. The buckles are symmetrically arranged on both sides of the connecting rod, and in conjunction with the second upright, they can fix the limiting component in a specific position, thereby locking the height of the limiting plate and ensuring the reliability of the anti-reverse component in the anti-reverse state, or maintaining the limit release state in the unlocked state, preventing accidental restoration of the limit function due to misoperation.

[0020] The beneficial effects of this invention are:

[0021] 1) This device, through the coordinated action of the binding strap, tightening device, and adjusting device, can accurately fix the sealing component at the pipeline leak location, achieving rapid and effective sealing of the leak. The sealing component, firmly supported by the binding strap, can fit tightly against the pipeline surface and form a double-layer sealing protection at the pipeline leak. This not only greatly improves the reliability of the seal but also effectively prevents media leakage, ensuring the sealing effect at the pipeline leak.

[0022] 2) The mounting bracket of this device can support the sealing box, corrugated pipe and sealing plate, ensuring that the middle part of the sealing plate is in contact with the outer wall of the pipe, and under the action of the restraint strap, it can pull the two ends of the sealing plate towards the pipe, thereby ensuring that the sealing plate can be tightly attached to the pipe.

[0023] 3) The mounting base of this device facilitates the installation and use of the fixing rod, and the fixing rod facilitates the installation of the end of the restraint strap, ensuring the safety and stability of the restraint strap during operation.

[0024] 4) The support rods and vertical rods of this device are used to support the sealing box, bellows, and sealing plate, ensuring that the sealing box, bellows, and sealing plate remain stable during operation. The through holes facilitate the installation of the sealing plate, which, together with the sealing box and bellows, forms a sealed space. When the gas pressure inside the sealing box is greater than the pressure inside the pipeline, the gas pressure inside the sealing box can press the sealing plate against the leak in the pipeline, thereby achieving the purpose of temporarily sealing the pipeline.

[0025] 5) The pressure stabilizing component of this device ensures that the pressure inside the sealing box remains stable when sealing pipeline leaks, guaranteeing the sealing quality of the device. When the pressure inside the sealing box increases, it pushes the piston to move away from the connection between the gas tank and the sealing box along the direction of the gas tank, thereby expanding the volume of the gas tank and absorbing excess pressure, keeping the pressure inside the sealing box stable. During the piston's movement, the second spring is compressed. When the pressure inside the sealing box decreases, the piston moves in the opposite direction under the action of the second spring, replenishing the pressure inside the sealing box and ensuring that the pressure inside the sealing box remains stable.

[0026] 6) The adjusting component of this device is used to adjust the position of the tensioning component, ensuring that the tensioning component is always below the end of the sealing plate. This ensures that when the binding strap is tightened, the bottom of the sealing plate is tightly attached to the outer wall of the pipe, thereby sealing the pipe leak.

[0027] 7) The tensioning element of this device is used to wind up the binding strap, thereby pulling the sealing plate tight to the outer wall of the pipe under the action of the binding strap, ensuring that the bottom of the sealing plate can be in close contact with the pipe, and ultimately achieving the purpose of sealing the pipe leak.

[0028] 8) The anti-reverse component of this device transmits the rotation of the winding roller synchronously to the vertical shaft through the meshing of the vertical shaft, the third bevel gear and the fourth bevel gear. By using the snap-fit ​​between the limiting block and the limiting groove at the bottom of the limiting plate, the rotation of the vertical shaft can be directly restricted. Furthermore, the rotational freedom of the winding roller is restricted through the meshing transmission relationship of the third bevel gear and the fourth bevel gear.

[0029] 9) When the lifting frame of this device is in the anti-reverse state, it drives the limiting plate to descend, so that the limiting groove and the limiting block are tightly engaged, realizing reliable limiting of the vertical shaft; when in the unlocked state, it drives the limiting plate to rise, so that the limiting block is disengaged from the limiting groove, releasing the rotation restriction of the vertical shaft, ensuring that the anti-reverse device is easy to operate and responds quickly.

[0030] 10) The sliding plate of this device avoids deviation and shaking during sliding through the sliding fit between the groove and the connecting rod, and the limiting fit between the guide block and the guide groove. The two ends of the push rod are rotatably connected to the limiting plate and the sliding plate respectively, which can convert the horizontal sliding of the sliding plate into the up and down lifting motion of the limiting plate, realizing the linkage transmission between the limiting component and the lifting frame. The buckles are symmetrically arranged on both sides of the connecting rod, which can fix the limiting component in a specific position in cooperation with the second upright, thereby locking the height of the limiting plate, ensuring the reliability of the limit of the anti-reverse component in the anti-reverse state, or keeping the limit released in the unlocked state, avoiding accidental restoration of the limit function due to misoperation. Attached Figure Description

[0031] Appendix Figure 1 This is a schematic diagram of the structure of the present invention.

[0032] Appendix Figure 2 This is a schematic diagram of the sealing component in this invention.

[0033] Appendix Figure 3 This is a schematic diagram of the installation structure of the sealing gasket and sealing plate in this invention.

[0034] Appendix Figure 4 This is a schematic diagram of the structure of the fixing frame in this invention.

[0035] Appendix Figure 5 This is a schematic diagram of the installation structure of the adjusting component in this invention.

[0036] Appendix Figure 6 This is a schematic diagram of the installation structure of the lifting component in this invention.

[0037] Appendix Figure 7 This is a schematic diagram of the pressure stabilizing component in this invention.

[0038] Appendix Figure 8 This is a schematic diagram of the piston installation structure in this invention.

[0039] Appendix Figure 9 This is a schematic diagram of the tensioning component in this invention.

[0040] Appendix Figure 10 This is a schematic diagram of the winding roller in this invention.

[0041] Appendix Figure 11 This is a schematic diagram of the installation structure of the stop-reverse component of the present invention.

[0042] Appendix Figure 12 This is a schematic diagram of the installation structure of the vertical shaft and the limiting block in this invention.

[0043] Appendix Figure 13 This is a schematic diagram of the lifting frame in this invention.

[0044] Appendix Figure 14This is a schematic diagram of the limiting component in this invention.

[0045] In the picture:

[0046] 1. Restraint belt;

[0047] 2. Sealing components; 201. Sealing box; 202. Fixing frame; 203. Corrugated pipe; 204. Sealing plate; 205. Fixing base; 206. Fixing rod; 207. Sealing gasket; 208. Through hole; 209. Sealing plate;

[0048] 2010, Support rod; 2011, Top rod; 2012, Vertical rod;

[0049] 3. Air intake pipe;

[0050] 4. Adjusting component; 401. Threaded rod; 402. Handle; 403. Lifting assembly; 404. Push-pull rod; 405. Rotating arm;

[0051] 406. Lifting plate; 407. Sliding sleeve;

[0052] 5. Pressure stabilizer; 501. Gas tank; 502. Telescopic rod; 503. Moving rod; 504. Connecting block; 505. Stabilizer; 506. Second spring; 507. Pulling rod; 508. Moving plate; 509. Piston;

[0053] 6. Anti-reverse component; 601. Fourth bevel gear; 602. Third bevel gear; 603. Mounting block; 604. Guide rod; 605. Fixing block; 606. Limiting component; 607. Lifting frame; 608. First spring; 609. Vertical shaft; 6010. Limiting block;

[0054] 6011, Sliding block; 6012, Lifting rod; 6013, Limiting plate; 6014, Connecting rod; 6015, Limiting groove;

[0055] 6016, guide block; 6017, push rod; 6018, buckle; 6019, push block; 6020, sliding plate; 6021, groove;

[0056] 7. Tightening component; 701. Second upright; 702. Connecting rod; 703. Rotating shaft; 704. Handle; 705. Mounting base; 706. First bevel gear; 707. Second bevel gear; 708. First upright; 709. Winding roller; 7010. Guide groove; 7011. Fixed shaft; 7012. Fixed groove; 7013. Through hole; 7014. Screw. Detailed Implementation

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] Example 1

[0060] like Figure 1 As shown, a temporary sealing device for leaks in large-diameter pipelines includes a sealing component 2 and a restraining strap 1. The sealing component 2 is also provided with an adjusting component 4 and a tightening component 7. One end of the restraining strap 1 is fixedly installed on one side of the sealing component 2, and the other end of the restraining strap 1 is connected to the tightening component 7. The adjusting component 4 is located on the top of the sealing component 2, and the tightening component 7 is installed on one side of the adjusting component 4. A pressure stabilizing component 5 is also provided on the sealing component 2.

[0061] In this embodiment, as Figure 2 As shown, the sealing component 2 includes a sealing box 201, a corrugated pipe 203, a sealing plate 204, and a fixing frame 202. The sealing box 201 is disposed inside the fixing frame 202, the corrugated pipe 203 is disposed at the bottom of the sealing box 201, and the sealing plate 204 is disposed at the bottom of the corrugated pipe 203. The sealing plate 204 can be attached to the pipe under the pull of the restraint strap 1, thereby achieving the effect of sealing the leak in the pipe.

[0062] A sealing gasket 207 is provided at the bottom of the sealing plate 204. The sealing gasket 207 is provided to ensure that the bottom of the sealing plate 204 is tightly attached to the outer wall of the pipe, preventing gas from leaking out from the connection between the sealing plate 204 and the pipe.

[0063] The fixing frame 202 can support the sealing box 201, the corrugated pipe 203 and the sealing plate 204, ensuring that the middle part of the sealing plate 204 is in contact with the outer wall of the pipe, and under the action of the binding strap 1, it can pull the two ends of the sealing plate 204 towards the position closer to the pipe until the sealing plate 204 is tightly attached to the pipe, thereby ensuring the sealing effect of the sealing plate 204 on the pipe leakage.

[0064] In this embodiment, as Figure 2 As shown, a fixing seat 205 and a fixing rod 206 are respectively provided at both ends of the sealing plate 204. The fixing seats 205 are symmetrically arranged on both sides of the center line of the sealing plate 204. The two ends of the fixing rod 206 are respectively fixedly installed on the fixing seats 205 on both sides of the center line of the sealing plate 204. One end of the restraint strap 1 is fixedly installed on the fixing rod 206 at one end of the sealing plate 204. The other end of the restraint strap 1 passes through the fixing rod 206 at the other end of the sealing plate 204 and is connected to the tensioning member 7. The setting of the fixing seat 205 facilitates the installation and use of the fixing rod 206, and the setting of the fixing rod 206 facilitates the installation of the end of the restraint strap 1, ensuring the safety and stability of the restraint strap 1 during operation.

[0065] In this embodiment, as Figure 4 As shown, the fixing frame 202 includes a support rod 2010, vertical rods 2012 disposed at both ends of the support rod 2010, and a top rod 2011. The support rod 2010 is fixedly installed on the top of the sealing box 201, the vertical rods 2012 are fixedly installed on the two side walls of the sealing box 201, and the bottom of the vertical rods 2012 is fixedly installed on the sealing plate 204. The top rod 2011 is fixedly installed on the top of the vertical rods 2012. The support rods 2010 and vertical rods 2012 are used to support the sealing box 201, the corrugated pipe 203, and the sealing plate 204, ensuring that the sealing box 201, the corrugated pipe 203, and the sealing plate 204 remain stable during operation.

[0066] In this embodiment, as Figure 5 As shown, the adjusting component 4 includes a threaded rod 401, a handle 402, a lifting assembly 403, a push-pull rod 404, and a rotating arm 405. The two ends of the threaded rod 401 are rotatably mounted on the top rod 2011 and the support rod 2010, respectively. The handle 402 is positioned above the top rod 2011 and is fixedly connected to the threaded rod 401. The lifting assembly 403 is slidably mounted on the vertical rod 2012 and is threadedly connected to the threaded rod 401. The rotating arms 405 are symmetrically arranged on the sealing box 201. On both sides, the rotating arm 405 is rotatably mounted on the vertical rod 2012. The two ends of the push-pull rod 404 are respectively rotatably mounted on the rotating arm 405 and the lifting assembly 403. The tensioning member 7 is set at the end of the rotating arm 405. The adjusting member 4 is set to adjust the position of the tensioning member 7 to ensure that the tensioning member 7 is always below the end of the sealing plate 204. This ensures that when the binding strap 1 is tightened, the bottom of the sealing plate 204 is tightly attached to the outer wall of the pipe, thereby achieving the purpose of sealing the pipe leak.

[0067] In this embodiment, as Figure 6As shown, the lifting assembly 403 includes a lifting plate 406 and sliding sleeves 407 disposed at both ends of the lifting plate 406. The sliding sleeves 407 are slidably mounted on the vertical rods 2012 at both ends of the support rod 2010. The lifting plate 406 is threadedly connected to the threaded rod 401. One end of the push-pull rod 404 is rotatably mounted on the sliding sleeve 407. The lifting assembly 403 facilitates the movement of the push-pull rod 404, thereby achieving the purpose of adjusting the rotating arm 405.

[0068] In this embodiment, as Figure 9 As shown, the tensioning component 7 includes a connecting rod 702, a mounting base 705, a winding roller 709, a handle 704, a rotating shaft 703, a first bevel gear 706, and a second bevel gear 707. A first upright 708 and a second upright 701 are respectively provided at both ends of the connecting rod 702. The first upright 708 and the second upright 701 are respectively mounted on the rotating arms 405 on both sides of the sealing box 201. The mounting base 705 is fixedly mounted on the first upright 708. The rotating shaft 703 is rotatably mounted on the mounting base 705. The first bevel gear 706 is fixedly mounted on the bottom of the rotating shaft 703. The handle 704 is fixedly mounted on the rotating shaft. At the top of 703, fixed shafts 7011 are fixedly installed at both ends of the winding roller 709. The fixed shafts 7011 at both ends of the winding roller 709 are rotatably installed on the rotating arms 405 on both sides of the sealing box 201. The second bevel gear 707 is installed on the fixed shaft 7011. The first bevel gear 706 meshes with the second bevel gear 707. The rotating handle 704 rotates the rotating shaft 703. The rotation of the rotating shaft 703 drives the first bevel gear 706 to rotate. The rotation of the first bevel gear 706 drives the second bevel gear 707 to rotate. The rotation of the second bevel gear 707 drives the winding roller 709 to rotate. The rotation of the winding roller 709 achieves the purpose of winding up the binding tape 1.

[0069] In this embodiment, as Figure 10 As shown, a through hole 7013 is opened in the middle of the winding roller 709, and a fixing groove 7012 is opened on both sides of the center line of the winding roller 709. A screw 7014 is provided in the fixing groove 7012. The other end of the binding strap 1 passes through the through hole 7013 and is fixed to the winding roller 709 by the screw 7014.

[0070] The tensioning element 7 is used to wind up the binding strap 1, thereby pulling the sealing plate 204 tightly against the outer wall of the pipe under the action of the binding strap 1, ensuring that the bottom of the sealing plate 204 can be in close contact with the pipe, and ultimately achieving the purpose of sealing the pipe leak.

[0071] In this embodiment, as Figure 11 , Figure 12As shown, a backstop 6 is also provided on the second upright 701. The backstop 6 includes a vertical shaft 609, a mounting block 603, a guide rod 604, a third bevel gear 602, a fourth bevel gear 601, a first spring 608, a lifting frame 607, and a limiting member 606. The mounting block 603 is fixedly installed on the second upright 701, and the vertical shaft 609 is rotatably installed on the mounting block 603. The third bevel gear 602 is fixedly installed on the bottom of the vertical shaft 609, and the fourth bevel gear 601 is fixedly installed on the fixed shaft 7011 on the other end of the winding roller 709. The third bevel gear 602 and the fourth bevel gear 601 mesh with each other. Fixed blocks 605 are provided on both sides of the mounting block 603. Two fixed blocks 605 are provided on the same side of the mounting block 603, one above the other. The mounting blocks 603 facilitate the fixing and installation of the guide rod 604.

[0072] The two ends of the guide rod 604 are respectively fixedly installed on the fixed blocks 605 arranged one above the other. The lifting frame 607 is slidably installed on the guide rod 604. The guide rod 604 is set to provide guidance for the lifting frame 607 to lift and lower, ensuring the normal lifting and lowering movement of the lifting frame 607.

[0073] The anti-reverse component 6 transmits the rotation of the winding roller 709 synchronously to the vertical shaft 609 through the meshing of the vertical shaft 609, the third bevel gear 602, and the fourth bevel gear 601. By using the snap-fit ​​engagement between the limiting block 6010 and the bottom limiting groove 6015 of the limiting plate 6013, the rotation of the vertical shaft 609 can be directly restricted. Furthermore, the rotational freedom of the winding roller 709 is restricted through the meshing transmission relationship of the third bevel gear 602 and the fourth bevel gear 601.

[0074] The anti-reverse component 6 can continuously provide a reliable anti-reverse limiting function for the winding roller 709 during operation, effectively preventing the winding roller 709 from reversing due to its own weight, cable tension and other factors, ensuring that the winding roller 709 is always in a stable working state, thereby ensuring the operational safety and work accuracy of the entire equipment, and is especially suitable for lifting and traction scenarios where the stability of the winding roller 709 is required.

[0075] A limiting block 6010 is provided at the top of the vertical shaft 609, and a limiting plate 6013 is provided on the lifting frame 607. A limiting groove 6015 is opened at the bottom of the limiting plate 6013. The limiting groove 6015 cooperates with the limiting block 6010 to limit the vertical shaft 609. Since the third bevel gear 602 is installed on the vertical shaft 609 and meshes with the fourth bevel gear 601, and the fourth bevel gear 601 is fixedly installed on the fixed shaft 7011 at the end of the winding roller 709, limiting the rotation of the vertical shaft 609 can achieve the purpose of limiting the rotation of the winding roller 709.

[0076] The cross-section of the limiting block 6010 includes, but is not limited to, rectangles, squares, and polygons, and the shape of the limiting groove 6015 is the same as that of the limiting block 6010.

[0077] The limiting member 606 is disposed on the connecting rod 702 and is connected to the limiting plate 6013. The limiting member 606 and the limiting plate 6013 are linked and cooperated. The limiting plate 6013 can be driven by external force to slide upward, so that the limiting groove 6015 is separated from the limiting block 6010, thereby releasing the rotation restriction on the vertical shaft 609 and the winding roller 709, and meeting the adjustment requirements of the winding roller 709 for unwinding or rewinding.

[0078] The first spring 608 is sleeved on the guide rod 604. The first spring 608 always applies a downward preload to the lifting frame 607 through its elastic force, ensuring that the limiting groove 6015 and the limiting block 6010 remain reliably engaged in the non-unlocked state, and preventing the winding roller 709 from rotating unexpectedly due to external disturbance or load.

[0079] In this embodiment, as Figure 13 As shown, the lifting frame 607 includes a sliding block 6011, a lifting rod 6012, and a connecting rod 6014. The sliding block 6011 is slidably mounted on the guide rod 604, and the sliding block 6011 is slidably engaged with the mounting block 603. The lifting rod 6012 is symmetrically arranged at both ends of the connecting rod 6014, and the lifting rod 6012 is fixedly connected to the sliding block 6011. In the anti-reverse state, the lifting frame 607 drives the limiting plate 6013 to descend, so that the limiting groove 6015 and the limiting block 6010 are tightly engaged, realizing reliable limiting of the vertical shaft 609. In the unlocked state, the lifting frame 607 drives the limiting plate 6013 to rise, so that the limiting block 6010 disengages from the limiting groove 6015, releasing the rotation restriction on the vertical shaft 609, ensuring that the anti-reverse component 6 is easy to operate and responds quickly.

[0080] The lifting frame 607 achieves smooth lifting and lowering along the direction of the guide rod 604 through the sliding engagement of the sliding block 6011 and the guide rod 604. The sliding engagement of the sliding block 6011 and the mounting block 603 further improves the guiding accuracy of the lifting frame 607's movement and avoids deviation or jamming during the lifting process.

[0081] The limiting plate 6013 is fixedly installed on the connecting rod 6014. The connecting rod 6014 provides a stable mounting carrier for the limiting plate 6013, ensuring the structural stability of the limiting plate 6013 when it is engaged or separated from the limiting block 6010.

[0082] In this embodiment, as Figure 14As shown, the limiting component 606 includes a buckle 6018, a push rod 6017, a sliding plate 6020, and a push block 6019. Guide grooves 7010 are formed on both sides of the connecting rod 702, and a groove 6021 is formed at the bottom of the sliding plate 6020. The groove 6021 is slidably engaged with the connecting rod 702. A guide block 6016 is formed on the inner wall of the groove 6021. The guide block 6016 is slidably engaged with the guide groove 7010. Through the sliding engagement of the groove 6021 with the connecting rod 702 and the limiting engagement of the guide block 6016 with the guide groove 7010, the sliding plate 6020 achieves smooth sliding along the length direction of the connecting rod 702, avoiding deviation or shaking during the sliding process.

[0083] The two ends of the push rod 6017 are rotatably mounted on the limiting plate 6013 and the sliding plate 6020, respectively. The two ends of the push rod 6017 are rotatably connected to the limiting plate 6013 and the sliding plate 6020, respectively. The horizontal sliding of the sliding plate 6020 can be converted into the up-and-down lifting motion of the limiting plate 6013, thereby realizing the linkage transmission between the limiting component 606 and the lifting frame 607.

[0084] The buckles 6018 are symmetrically arranged on both sides of the connecting rod 702, and the buckles 6018 cooperate with the second upright rod 701. The buckles 6018 are symmetrically arranged on both sides of the connecting rod 702, and cooperate with the second upright rod 701 to fix the limiting member 606 in a specific position, thereby locking the height of the limiting plate 6013, ensuring the reliability of the limit of the anti-reverse member 6 in the anti-reverse state, or keeping the limit released in the unlocked state, avoiding accidental restoration of the limit function due to misoperation.

[0085] The push block 6019 is fixedly installed on the top of the sliding plate 6020. The push block 6019 provides a convenient point of application for external force driving, making it easy for the operator to drive the sliding plate 6020 to move by pushing the push block 6019.

[0086] Example 2

[0087] In this embodiment, as Figure 3 As shown, a through hole 208 is opened in the middle of the sealing plate 204, and a sealing plate 209 is installed inside the through hole 208. An air inlet pipe 3 is installed on the top of the sealing box 201. The through hole 208 facilitates the installation of the sealing plate 209. Together with the sealing box 201 and the corrugated pipe 203, a sealed space is formed. When the gas pressure in the sealing box 201 is greater than the pressure in the pipeline, the sealing plate 209 can be pressed against the leak in the pipeline under the action of the gas pressure in the sealing box 201, thereby achieving the purpose of temporarily sealing the pipeline.

[0088] The sealing plate 209 is made of elastic material, including but not limited to rubber.

[0089] During operation, gas is introduced through the air inlet pipe 3, so that the gas pressure in the sealed space formed between the sealing plate 204, the sealing plate 209, the bellows 203 and the sealing box 201 is greater than the pressure at the pipeline leak. Under the pressure of the gas in the sealing box 201, the sealing plate 204 is always blocked at the pipeline leak. Even if the restraint band 1 is slightly loosened, the pipeline can still be resealed under the pressure of the sealing plate 209 and the sealing box 201.

[0090] By combining the sealing box 201 and the restraint strap 1, a first layer of sealing can be achieved at the pipeline leak. The gas with an input pressure greater than the pressure at the pipeline leak point is placed in the sealed space formed between the sealing plate 204, the sealing plate 209, the bellows 203 and the sealing box 201. This ensures that the sealing plate 209 is always in contact with the leak point on the pipeline, achieving a second layer of sealing at the pipeline leak point. Therefore, this device greatly improves the quality and efficiency of temporary pipeline sealing.

[0091] Example 3

[0092] In this embodiment, as Figure 7 , Figure 8 As shown, the pressure stabilizing component 5 includes an air tank 501, a piston 509, a pull rod 507, a moving plate 508, a moving rod 503, a telescopic rod 502, a second spring 506, and a stabilizing rod 505 symmetrically arranged on both sides of the sealing box 201. The air tank 501 is connected to the sealing box 201. The piston 509 is disposed inside the air tank 501. The two ends of the pull rod 507 are respectively connected to the piston 509 and the moving plate 508. The moving rod 503 is symmetrically arranged at both ends of the moving plate 508 and is slidably connected to the vertical rod 2012. A connecting block 504 is also provided at the end of the moving rod 503. The connecting block 504 facilitates the installation of the telescopic rod 502 and the second spring 506.

[0093] The stabilizer bar 505 is fixedly installed on the connecting block 504, and the stabilizer bar 505 is slidably engaged with the vertical bar 2012.

[0094] The two ends of the telescopic rod 502 are respectively fixedly installed on the connecting block 504 and the vertical rod 2012. The telescopic rod 502 facilitates the installation of the second spring 506 and ensures the normal operation of the second spring 506.

[0095] The second spring 506 is sleeved on the telescopic rod 502. The second spring 506 is used to provide power for the movement of the stabilizer rod 505 and the moving rod 503. The movement of the stabilizer rod 505 and the moving rod 503 drives the piston 509 to move, which slowly compresses the gas in the gas storage tank 501 into the sealing box 201, thereby ensuring that the pressure in the sealing box 201 is always stable.

[0096] The pressure stabilizer 5 ensures that the pressure inside the sealing box 201 remains stable when sealing the pipeline leak, thus ensuring the sealing quality of the device at the pipeline leak. When the pressure inside the sealing box 201 increases, it will push the piston 509 to move away from the connection between the gas tank 501 and the sealing box 201 along the direction of the gas tank 501, thereby expanding the volume of the gas tank 501 and absorbing excess pressure, so that the pressure inside the sealing box 201 remains stable. During the movement of the piston 509, the second spring 506 will be compressed.

[0097] When the pressure inside the sealing box 201 decreases, the piston 509 will move in the opposite direction under the action of the second spring 506 to replenish the pressure in the sealing box 201, ensuring that the pressure inside the sealing box 201 remains stable.

[0098] When the input pressure in the sealed space formed between the sealing plate 204, sealing plate 209, bellows 203 and sealing box 201 is greater than the pressure of the gas at the pipeline leak, the pressure stabilizer 5 can always provide pressure to the sealing box 201 until the piston 509 moves to the connection between the gas storage tank 501 and the sealing box 201. The setting of the pressure stabilizer 5 can greatly improve the sealing time of the pipeline leak.

[0099] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A temporary sealing device for leaks in large-diameter pipelines, comprising a sealing element and a restraining strap, characterized in that, The sealing component is also equipped with an adjusting component and a tightening component. One end of the binding strap is fixedly installed on one side of the sealing component, and the other end of the binding strap is connected to the tightening component. The adjusting component is located on the top of the sealing component, and the tightening component is installed on one side of the adjusting component to tighten the binding strap. The sealing component is also equipped with a pressure stabilizing component to ensure that the pressure inside the sealing box remains stable when sealing a pipeline leak. The sealing component includes a sealing box, a corrugated pipe, a sealing plate, and a fixing frame. The sealing box is located inside the fixing frame, the corrugated pipe is located at the bottom of the sealing box, the sealing plate is located at the bottom of the corrugated pipe, and a sealing gasket is provided at the bottom of the sealing plate. A fixing seat and a fixing rod are respectively provided at both ends of the sealing plate. The fixing seats are symmetrically arranged on both sides of the center line of the sealing plate. The two ends of the fixing rod are respectively fixedly installed on the fixing seats on both sides of the center line of the sealing plate. One end of the binding strap is fixedly installed on the fixing rod at one end of the sealing plate, and the other end of the binding strap passes through the fixing rod at the other end of the sealing plate and is connected to the tensioning piece. The fixing frame includes a support rod, vertical rods at both ends of the support rod, and a top rod. The support rod is fixedly installed on the top of the sealing box, the vertical rods are fixedly installed on the two side walls of the sealing box, and the bottom of the vertical rods is fixedly installed on the sealing plate. The top rod is fixedly installed on the top of the vertical rods. A through hole is opened in the middle of the sealing plate, and a sealing plate is installed inside the through hole. A sealed space is formed between the sealing plate, the sealing box, the corrugated pipe and the sealing plate. The sealing plate is made of elastic material, and an air inlet pipe is installed on the top of the sealing box. The adjusting component includes a threaded rod, a handle, a lifting assembly, a push-pull rod, and a rotating arm. The two ends of the threaded rod are rotatably mounted on the top rod and the support rod, respectively. The handle is located above the top rod and is fixedly connected to the threaded rod. The lifting assembly is slidably mounted on the vertical rod and is threadedly connected to the threaded rod. The rotating arms are symmetrically arranged on both sides of the sealing box and are rotatably mounted on the vertical rod. The two ends of the push-pull rod are rotatably mounted on the rotating arm and the lifting assembly, respectively. The tensioning element is located at the end of the rotating arm away from the push-pull rod. The lifting assembly includes a lifting plate and sliding sleeves disposed at both ends of the lifting plate. The sliding sleeves are slidably mounted on the vertical rods at both ends of the support rod, and the lifting plate is threadedly connected to the threaded rod.

2. A temporary sealing device for leaks in large-diameter pipelines according to claim 1, characterized in that, The pressure stabilizing component includes an air tank symmetrically arranged on both sides of the sealing box, a piston, a pull rod, a moving plate, a moving rod, a telescopic rod, a second spring, and a stabilizing rod. The air tank is connected to the sealing box. The piston is located inside the air tank. The two ends of the pull rod are connected to the piston and the moving plate, respectively. The moving rod is symmetrically arranged at both ends of the moving plate and is slidably connected to the vertical rod. A connecting block is also provided at the end of the moving rod. The stabilizing rod is fixedly installed on the connecting block and is slidably engaged with the vertical rod. The two ends of the telescopic rod are fixedly installed on the connecting block and the vertical rod, respectively. The second spring is sleeved on the telescopic rod.

3. A temporary sealing device for leaks in large-diameter pipelines according to claim 1, characterized in that, The tensioning component includes a connecting rod, a mounting base, a winding roller, a handle, a rotating shaft, a first bevel gear, and a second bevel gear. A first upright is provided at one end of the connecting rod, and the first upright is mounted on one of the rotating arms. The mounting base is fixedly mounted on the first upright, and the rotating shaft is rotatably mounted on the mounting base. The first bevel gear is fixedly mounted at the bottom of the rotating shaft, and the handle is fixedly mounted at the top of the rotating shaft. Fixed shafts are fixedly mounted at both ends of the winding roller, and the fixed shafts at both ends of the winding roller are rotatably mounted on the rotating arms on both sides of the sealing box. The second bevel gear is mounted on one of the fixed shafts, and the first bevel gear meshes with the second bevel gear. A through hole is made in the middle of the winding roller, and fixing grooves are made on both sides of the center line of the winding roller. Screws are installed in the fixing grooves. The other end of the binding strap passes through the through hole and is fixed to the winding roller by the screws.

4. A temporary sealing device for leaks in large-diameter pipelines according to claim 3, characterized in that, The tensioning component also includes a second upright rod at the other end of the connecting rod. The second upright rod is mounted on another rotating arm, and a backstop is also provided on the second upright rod. The backstop includes a vertical shaft, a mounting block, a guide rod, a third bevel gear, a fourth bevel gear, a first spring, a lifting frame, and a limiting component. The mounting block is fixedly mounted on the second upright rod, and the vertical shaft is rotatably mounted on the mounting block. A limiting block is provided at the top of the vertical shaft. The third bevel gear is fixedly mounted on the bottom of the vertical shaft, and the fourth bevel gear is fixedly mounted on a fixed shaft at the other end of the winding roller. The third bevel gear and the fourth bevel gear are connected... The gears mesh, and there are fixing blocks on both sides of the mounting block. Two fixing blocks are set one above the other on the same side of the mounting block. The two ends of the guide rod are respectively fixedly installed on the fixing blocks set one above the other. The lifting frame is slidably installed on the guide rod. A limit plate is set on the lifting frame. A limit groove is opened at the bottom of the limit plate. The limit groove cooperates with the limit block to limit the rotation of the vertical shaft. The first spring is sleeved on the guide rod. The limit member is set on the connecting rod and is connected to the limit plate. The limit member can drive the limit plate to slide up or down by external force.

5. A temporary sealing device for leaks in large-diameter pipelines according to claim 4, characterized in that, The lifting frame includes a sliding block, a lifting rod, and a connecting rod. The sliding block is slidably mounted on the guide rod and is slidably engaged with the mounting block. The lifting rod is symmetrically arranged at both ends of the connecting rod and is fixedly connected to the sliding block. The limiting plate is fixedly mounted on the connecting rod.

6. A temporary sealing device for leaks in large-diameter pipelines according to claim 5, characterized in that, The limiting component includes a buckle, a push rod, a sliding plate, and a push block. Guide grooves are formed on both sides of the connecting rod, and a groove is formed at the bottom of the sliding plate. The groove slides with the connecting rod. A guide block is formed on the inner wall of the groove, and the guide block slides with the guide groove. The push block is fixedly installed on the top of the sliding plate. The two ends of the push rod are rotatably installed on the limiting plate and the sliding plate, respectively. The buckles are symmetrically arranged on both sides of the connecting rod and cooperate with the second upright.

Images