A process and device for sealing and assembling pipe plugging clamps
By combining airbag straps with linkage sealing binding components and a crab-shaped moving grinding unit, the safety hazards and sealing problems of traditional pipeline plugging technology in flammable and explosive environments are solved, achieving efficient and safe pipeline plugging operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING JINSHIWAN PIPELINE TECH CO LTD
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-31
AI Technical Summary
Existing pipeline plugging technologies pose high risks in flammable, explosive, or pressurized environments. Traditional mechanical clamps are cumbersome and inefficient to install, making it difficult to guarantee sealing. Furthermore, they lack the ability to pre-treat the outer wall of the pipeline online, posing safety hazards.
A composite clamping method combining airbag straps and linkage sealing binding components is adopted, along with a crab-shaped movement and grinding unit. The sealing clamp device driven by an air pump and motor achieves adaptive pipe surface sealing and efficient grinding. The pneumatic system is controlled by a solenoid valve for automated operation.
It achieves reliable sealing under various pipe diameters and operating conditions, reduces manual labor intensity, and improves the efficiency and safety of sealing operations, making it suitable for emergency repairs of high-risk industrial pipelines.
Smart Images
Figure CN122480665A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of pipeline emergency maintenance and repair technology, specifically a pipeline sealing clamp sealing assembly process and device. Background Technology
[0002] In the operation of pipelines in the petroleum, chemical, gas and municipal sectors, pipeline leaks often occur due to corrosion and aging, third-party damage or process modifications, or pipeline sealing operations that require no interruption of supply. Such leaks not only cause waste of resources and environmental pollution, but may also lead to serious safety accidents.
[0003] Chinese patent CN120760018A discloses an explosion-proof self-clamping pipe leak sealing clamp and sealing method, including an upper clamping block, a lower clamping block, an annular locking assembly, a gear transmission assembly, a hydraulic damping assembly, a pressure and flow monitor, and a drain valve. The upper and lower clamping blocks are hinged at one end and locked at the other end via flanges. The upper clamping block is equipped with a pressure and flow monitor and a drain valve. The annular locking assembly has an annular rack with an annular groove that slides with the T-shaped flanges at both ends of the clamping block. The gear transmission assembly has a gear on the transmission shaft that meshes with the teeth of the annular rack. The hydraulic damping assembly is hinged to the upper and lower clamping blocks. The hydraulic damping assembly reduces the impact of the clamp closing, preventing sparks from causing combustion and explosion. The annular locking assembly provides pre-tightening, reducing the physical burden on operators. The built-in pressure and flow monitor can monitor pressure and drain flow.
[0004] Based on the aforementioned existing technologies, it has been found that traditional pipeline sealing mainly relies on welding blind flanges or installing flange-type mechanical clamps, which has significant drawbacks: welding requires open flame, posing extremely high risks in flammable, explosive, or pressurized environments, and often necessitates pipeline shutdown; traditional mechanical clamps are cumbersome to install, relying heavily on manual hammering to tighten bolts, which is not only inefficient and labor-intensive, but also makes it difficult to ensure uniform preload on each bolt, resulting in uneven pressure distribution between the clamp and the pipeline outer wall. This easily creates weak points in the seal, such as where the pipeline has excessive ellipticity, surface corrosion, or axial grooves, leading to leakage; in addition, existing technologies lack online pretreatment capabilities for the pipeline outer wall, and rust and oxide scale directly affect the fit of the sealing elements; the movement and positioning of heavy clamps are also inconvenient, requiring construction personnel to work at the leak point, which is prone to getting wet and poses safety hazards.
[0005] Therefore, the present invention provides a sealing assembly process and device for pipe plugging clamps. Summary of the Invention
[0006] In order to solve the technical problems existing in the background art, the present invention proposes a pipeline sealing clamp sealing assembly process and device.
[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The pipe plugging clamp sealing assembly device of the present invention includes a base; a top seat is fitted on the top outer wall of the base, and pipe grooves are opened on the opposite outer walls of the base and the top seat; an airbag strap is attached to the inner wall of the pipe groove; an air pump is installed on the top outer wall of the top seat; the air pump's air delivery end is connected to an air delivery main pipe; an electromagnetic three-way valve is installed through the end of the air delivery main pipe; one end of the electromagnetic three-way valve is connected to an air injection branch pipe; the end of the air injection branch pipe is connected to the inside of the airbag strap; a linkage sealing and binding assembly is provided on the inner walls of both ends of the base and the top seat; and an end plugging and sealing assembly is provided on the outer walls of both ends of the base and the top seat.
[0008] Furthermore, the linkage sealing and binding assembly includes an arc frame symmetrically fixed to the inner walls of both ends of the top seat. The arc frame has an arc groove inside, and a piston is provided in the inner wall of both ends of the arc groove. A tension spring is connected between the pistons. A through hole is provided on the outer wall of both ends of the arc frame. An arc clamping post is inserted into the through hole. The arc clamping post passes through the arc groove and is connected to the outer wall of the piston end at one end. Arc clamping grooves are provided on the inner wall of both ends of the base corresponding to the arc clamping post. The airbag strap is placed between the arc frame and the arc clamping post. The end of the air injection branch pipe is connected to the middle of the arc groove.
[0009] Furthermore, the end-sealing assembly includes a lower clamp and an upper clamp symmetrically arranged on the outer walls of both ends of the base and the top seat. The lower clamp and the upper clamp are fitted together opposite each other. Guide holes are provided through the four corner outer walls of the lower clamp and the upper clamp. Guide posts are inserted into the guide holes. The ends of the guide posts are fixedly connected to the four corner outer walls of both ends of the base and the top seat respectively. An ear block is fixed on one side of the top outer wall of the upper clamp, and a screw hole is provided through the outer wall of the end of the ear block. A screw is screwed into the screw hole. A forward and reverse motor is fixed on the outer walls of both ends of the top of the top seat. One end of the screw is connected to the drive shaft end of the forward and reverse motor. Semi-conical sealing rings are symmetrically connected on the opposite outer walls of the base and the top seat on both sides. Semi-conical sealing holes are provided on the outer walls of both ends of the base and the top seat corresponding to the semi-conical sealing rings. Crab-shaped moving and grinding units are provided on the outer walls of the lower clamp and the upper clamp and the base and the top seat.
[0010] Furthermore, the crab-shaped moving and polishing unit includes a first cylinder symmetrically embedded and fixed on the outer walls of both ends of the base and the top seat. One end of the telescopic rod of the first cylinder is fixed with a first arc-shaped clamping arm. A second cylinder is embedded and fixed on the middle outer wall of the lower and upper clamping seats on one side. One end of the telescopic rod of the second cylinder is fixed with a second arc-shaped clamping arm, and a frosted layer is provided on the opposite outer wall of the second arc-shaped clamping arm. A first air manifold is connected between the air inlets of the first cylinder and a second air manifold is connected between the air inlets of the second cylinder. One end of the electromagnetic three-way valve is connected to a three-way connector. One end of the three-way connector is connected to a first air inlet pipe. The ends of the first air inlet pipe and the first air manifold are connected, and a first solenoid valve is installed through the end of the first air inlet pipe. One end of the three-way connector is connected to a second air inlet pipe. The ends of the second air inlet pipe and the second air manifold are connected, and a second solenoid valve is installed through the end of the second air inlet pipe.
[0011] Furthermore, hinges are provided at the connection points between the lower clamp seat and the upper clamp seat and one side of the base and the top seat, and locking buckles are correspondingly provided on the outer walls of the lower clamp seat and the upper clamp seat and the base and the top seat on the other side.
[0012] Furthermore, both the first and second air inlet pipes are telescopic flexible hoses.
[0013] Furthermore, an air filter element is installed through the air intake end of the air pump, and a sealing gasket is fitted to the cover connection between the base and the top seat.
[0014] Furthermore, each end of the guide post is fixed with a limit block, and the end of the screw is screwed with a locking nut.
[0015] A pipe plugging clamp sealing assembly process is disclosed. The process adopts the aforementioned pipe plugging clamp sealing assembly device and includes the following steps: Step 1, preparation and positioning; Step 2, crab-shaped movement and sealing surface grinding; Step 3, airbag strap inflation and linkage clamping; Step 4, end plugging clamp seat closure; Step 5, resetting and disassembly. In step one above, the pipe to which the sealing clamp needs to be installed is cleaned and positioned. The base and top seat are opened by hinges, and the lower clamp and upper clamp are also opened. The base is placed under the pipe so that the pipe groove clamps the pipe. The position is adjusted to ensure that the pipe is in the center. The top seat and upper clamp are closed and temporarily fixed to the outer wall of the pipe by locking the buckle. The sealing clamp is temporarily fixed to one side of the pipe leak point for subsequent operations. In step two above, according to the instruction, the solenoid three-way valve is controlled to switch the gas path, and the air pump is controlled to work, supplying air to the three-way connector through the main gas supply pipe and the solenoid three-way valve; first, the first solenoid valve is opened and the second solenoid valve is closed, and the gas enters the first cylinders on both sides of the top seat through the first air inlet pipe and the first air manifold pipe. The telescopic rods of the first cylinders extend synchronously, driving the first arc clamping arms to move relative to each other to clamp the pipe inside the top seat; the forward and reverse motor is controlled to rotate forward, driving the screw to rotate. Since the screw meshes with the screw hole on the lug, the meshing transmission drives the lower clamp and the upper clamp to move laterally along the guide post, that is, the lower clamp and the upper clamp move laterally along the pipe; then the first solenoid valve is closed and the second solenoid valve is opened, and the gas enters the second cylinder through the second air inlet pipe and the second air manifold pipe. The telescopic rod of the second cylinder extends, driving the second arc clamp... The relative movement of the arms clamps the pipe inside the clamp seat; then the forward and reverse motors are controlled to reverse, and under the meshing transmission of the screw and screw hole, the base and top seat are driven to move closer to the clamp seat, that is, the base and top seat move laterally along the pipe. The above operation is repeated according to the instructions, that is, the crab-shaped feed movement of the sealing clamp on the pipe is controlled; and the first solenoid valve and the second solenoid valve are opened, and gas enters the first cylinder and the second cylinder simultaneously. The first arc clamping arm and the second arc clamping arm both clamp the pipe. Then the forward and reverse motors are controlled to reverse back and forth, and under the meshing transmission of the screw and screw hole, the clamp seat moves laterally back and forth along the pipe. The abrasive layer on the second arc clamping arm polishes the outer wall of the pipe, and polishes and cleans the oxide layer, rust or unevenness in the predetermined sealing area of the outer wall of the pipe, creating conditions for a perfect seal in the future. In step three above, the sealing clamp is controlled to move on the pipeline according to the crab-shaped feeding movement method in step two. The base and top seat move to the pipeline grinding and cleaning position and cover the predetermined sealing area. When the top seat is closed on the base, the airbag strap on the inner wall of the pipe groove initially covers the outer wall of the pipeline. The arc-shaped clamp in the linkage sealing and binding assembly is aligned with the arc-shaped clamp groove on the base. The electromagnetic three-way valve is controlled to switch the air path and start the air pump. Air is supplied to the air injection branch pipe through the air supply main pipe and the electromagnetic three-way valve. The gas first enters the interior of the airbag strap through the air injection branch pipe, causing it to expand and initially tighten the pipeline. At the same time, some gas enters the middle of the arc groove of the linkage sealing and binding assembly through the air injection branch pipe. The gas pressure pushes the two pistons in the arc groove to move towards both ends against the tension of the tension spring. The piston drives the arc-shaped clamp connected to it to move towards the center of the pipeline along the trajectory of the arc-shaped clamp groove, thereby further clamping the expanded airbag strap and pipeline from both sides to form a stable composite clamp. In step four above, the forward and reverse motor is controlled to rotate, driving the screw to rotate. Under the meshing transmission of the screw and screw hole, the clamps on both sides move closer to the base and top seat along the guide post. During this process, the semi-conical sealing rings set opposite to the clamps on both sides are inserted into the semi-conical sealing holes on both sides of the base and top seat. The semi-conical sealing rings are pressed between the outer wall of the pipe and the semi-conical sealing holes, forming a seal at the end of the sealing clamp. Finally, the locking nut at the end of the screw is manually tightened to complete the final assembly and sealing of the entire sealing clamp. In step five above, when it is necessary to disassemble the clamp, the operation is carried out in reverse order: loosen the locking nut, control the forward and reverse motor to reverse to release the seal of the half-cone sealing ring; release the pressure in each cylinder and airbag strap through the solenoid valve; release the locking between the base and the top seat, and the clamp can be removed from the pipeline.
[0016] The beneficial effects of this invention are as follows: 1. Innovative "crab-shaped" movement and online grinding function: Through the crab-shaped movement and grinding unit, the device can move autonomously on the pipeline. The first cylinder drives the first arc-shaped clamping arm to clamp the main clamping part, and the second cylinder drives the second arc-shaped clamping arm with a frosted layer to clamp the clamping seat part. The screw driven by the forward and reverse motor makes the two parts move alternately relative to each other, realizing the lateral movement similar to a crab. This process can directly move the device to any leak point in the pipeline, so that construction personnel do not need to work at the leak point, solving the problem that traditional workers are prone to getting wet and inconvenient to work at the leak point, which poses safety hazards. At the same time, the alternating clamping and reciprocating lateral movement can efficiently grind and clean the rust and oxide layer on the outer wall of the pipeline with the frosted surface of the second arc-shaped clamping arm, creating an ideal interface for sealing and ensuring the sealing performance of the pipeline sealing clamp in the later stage. 2. Adaptive Composite Clamping Seal: This system combines an airbag strap with a linkage sealing assembly. The inflated airbag strap adapts to the irregular surface of the pipeline, providing uniform initial sealing pressure. Simultaneously, the gas filling the linkage assembly pushes the piston, overcoming the tension spring and causing the arc-shaped clamping column to converge towards the center along an arc trajectory, applying a strong mechanical clamping force to the airbag strap and the pipeline. This combined effect of "air-inflated soft sealing" and "mechanical hard clamping" ensures reliable clamping and sealing under various pipe diameters and operating conditions. 3. Adjustable high-pressure end seal: The end sealing assembly adopts a lower clamp seat and an upper clamp seat that can move relative to each other; by driving the screw with a forward and reverse motor, the distance between the clamp seat and the main clamp body can be precisely controlled, so that the semi-conical sealing ring installed on the clamp seat is precisely inserted into the semi-conical sealing hole of the main clamp. The conical surface fits and generates radial expansion under axial compression to form a high-pressure resistant end seal, effectively blocking the path of pipeline medium leakage from both ends of the clamp; 4. High Integration and Automated Operation: The air pump and motor serve as the power source, controlled by an electromagnetic three-way valve and multiple solenoid valves, providing pneumatic power for the airbag straps, linkage binding components, and crab-shaped moving cylinders, resulting in a high degree of system integration. The entire assembly process, including movement, positioning, grinding, clamping, and end sealing locking, can be completed automatically or semi-automatically according to preset programs, greatly improving the efficiency and safety of sealing operations and reducing the intensity of manual labor and skill requirements. The provided process steps are perfectly matched with the device structure design, and each operation is guaranteed by corresponding mechanical and pneumatic actuators, forming a complete, efficient, and reliable pipeline pressurized sealing solution, which is particularly suitable for high-risk, high-requirement emergency repairs and modifications of industrial pipelines. Attached Figure Description
[0017] The invention will now be further described with reference to the accompanying drawings.
[0018] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a partial cross-section of the present invention. Figure 1 ; Figure 3 This is a partial cross-section of the present invention. Figure 2 ; Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 yes Figure 2 Enlarged view of a section at point B in the middle; Figure 6 yes Figure 1 Enlarged view of part C in the middle Figure 7 yes Figure 1 Enlarged view of a section at point D; Figure 8 yes Figure 3 Enlarged view of a section at point E in the middle; In the diagram: 1. Base; 2. Top seat; 3. Tube groove; 4. Airbag strap; 5. Air pump; 6. Main air supply pipe; 7. Solenoid three-way valve; 8. Inflation branch pipe; 9. Linkage sealing and binding assembly; 901. Arc frame; 902. Arc groove; 903. Piston; 904. Tension spring; 905. Through hole; 906. Arc clamping post; 907. Arc clamping groove; 10. End sealing and plugging assembly; 101. Lower clamp seat; 102. Upper clamp seat; 103. Guide hole; 104. Guide post; 105. Ear block; 106. Screw hole; 107. Screw; 108. Positive and negative 109. Rotary motor; 1010. Semi-conical sealing ring; 11. Semi-conical sealing hole; 12. Crab-shaped moving and grinding unit; 13. First cylinder; 14. First arc-shaped clamping arm; 15. Second cylinder; 16. Second arc-shaped clamping arm; 17. Frosted layer; 18. First air manifold; 19. Second air manifold; 100. T-connector; 1110. First air inlet pipe; 1111. Second air inlet pipe; 12. Second solenoid valve; 13. Locking buckle; 14. Air filter element; 15. Limiting block. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0020] like Figures 1 to 8 As shown in the embodiment of the present invention, a pipe plugging clamp sealing assembly device includes a base 1 and a top seat 2. The base 1 and the top seat 2 are assembled by bolts or quick-locking covers, and their mating surfaces are provided with sealing gaskets. The inner walls of the two opposite each other are provided with pipe grooves 3, which form a complete circular hole after assembly, for accommodating the pipe to be plugged. An annular airbag strap 4 is attached and fixed to the inner wall of the pipe groove 3. An air pump 5 is installed on one side of the top of the top seat 2. Its air intake is equipped with an air filter element 14. The air outlet of the air pump 5 is connected to the air supply main pipe 6. An electromagnetic three-way valve 7 is installed at the end of the air supply main pipe 6. One outlet of the electromagnetic three-way valve 7 is connected to an air injection branch pipe 8. The end of the air injection branch pipe 8 is connected to the inside of the airbag strap 4.
[0021] Specifically, a linkage sealing and binding assembly 9 is provided on the inner walls of both ends of the base 1 and the top seat 2; this assembly includes two arc frames 901 symmetrically fixed on the inner wall of the top seat 2, each arc frame 901 having an arc groove 902 inside, with a piston 903 at each end of the groove, and a tension spring 904 connecting the two pistons 903. Through holes 905 are provided on the end walls of the arc frames 901, and slidable arc clamping posts 906 are inserted into the through holes 905. The inner end of the arc clamping post 906 is connected to the outer side of the piston 903. An arc clamping groove 907 is provided at a corresponding position on the inner wall of the base 1 to guide the movement trajectory of the arc clamping post 906, thus securing the airbag. The band 4 is located between the arc frame 901 and the arc clamping column 906. One branch of the air injection branch pipe 8 connects to the middle of the arc groove 902. The airbag strap 4 and the linkage sealing strap assembly 9 are combined. After inflation, the airbag strap 4 can adapt to the irregular surface of the pipeline and provide uniform initial sealing pressure. At the same time, the gas injected into the linkage assembly pushes the piston 903, which overcomes the tension of the tension spring 904 and drives the arc clamping column 906 to retract towards the center along the arc trajectory, applying a strong mechanical clamping force to the airbag strap 4 and the pipeline. This combined effect of air expansion soft sealing and mechanical hard clamping ensures reliable clamping and sealing under various pipe diameters and working conditions.
[0022] Specifically, end-sealing sealing assemblies 10 are provided on the outer walls of both ends of the base 1 and the top seat 2. These assemblies include a lower clamp seat 101 and an upper clamp seat 102 connected to both sides of the main body. The lower clamp seat 101 and the upper clamp seat 102 can be flipped and closed with the main body via hinges 12 and locking buckles 13. Guide holes 103 are provided at the four corners of the lower clamp seat 101 and the upper clamp seat 102, with guide posts 104 passing through them. The two ends of the guide posts 104 are fixed to the outer walls of the four corners of the base 1 and the top seat 2, respectively, and the ends of the guide posts 104 are provided with limiting blocks 15. An ear block 105 is fixed to the top of the upper clamp seat 102, and a screw hole 106 is opened on the ear block 105. A screw rod 107 is screwed into the screw hole 106, with one end of the screw rod 107... The output shaft of the reversible motor 108 fixed on the top seat 2 is connected to the base 1. The outer walls of both ends of the base 1 and the top seat 2 are fixed with semi-conical sealing rings 109 and semi-conical sealing holes 1010 are opened at the corresponding positions for cooperation with the semi-conical sealing rings 109 on the clamp seat. The end sealing assembly 10 adopts a lower clamp seat 101 and an upper clamp seat 102 that can move relative to each other. By driving the screw 107 through the reversible motor 108, the distance between the clamp seat and the main clamp body can be precisely controlled, so that the semi-conical sealing rings 109 installed on the clamp seat can be precisely inserted into the semi-conical sealing holes 1010 of the main clamp. The conical surface cooperates to generate radial expansion under axial compression, forming a high-pressure resistant end seal, effectively blocking the path of leakage of pipeline medium from both ends of the clamp. Specifically, the crab-shaped moving and polishing unit 11 includes: a first cylinder 111 symmetrically embedded on the outer walls of both ends of the base 1 and the top seat 2, with a first arc-shaped clamping arm 112 fixed to the end of its telescopic rod; and a second cylinder 113 embedded on the outer wall of the middle part of the lower clamp seat 101 and the upper clamp seat 102 on one side, with a second arc-shaped clamping arm 114 fixed to the end of its telescopic rod, and a frosted layer 115 adhering to the inner side of the second arc-shaped clamping arm 114; the air inlets of all the first cylinders 111 are connected through a first air manifold 116, and the air inlets of all the second cylinders 113 are connected through a second air manifold 117. Both the first air manifold 116 and the second air manifold 117 are telescopic flexible hoses. The other outlet of the electromagnetic three-way valve 7 is branched into a first air inlet pipe 119 and a second air inlet pipe 1111 through a three-way connector 118. The first air inlet pipe 119 is connected to the first air manifold 116, and a first solenoid valve 1110 is installed on the pipeline; the second air inlet pipe 111... 1. Connected to the second gas pipe 117, the pipe is equipped with a second solenoid valve 1112; through the crab-shaped movement and grinding unit 11, the device can move autonomously on the pipe. The first cylinder 111 drives the first arc clamping arm 112 to clamp the main clamping part, and the second cylinder 113 drives the second arc clamping arm 114 with a frosted layer 115 to clamp the clamping seat part. The screw 107 is driven by the forward and reverse motor 108 to make the two parts move alternately relative to each other, realizing a crab-like lateral movement. This process can directly move the device to any leak point in the pipe, so that construction personnel do not need to work at the leak point, solving the problem that traditional workers are prone to getting wet and inconvenient to work at the leak point, which poses a safety hazard. At the same time, the alternating clamping and reciprocating lateral movement can efficiently grind and clean the rust and oxide layer on the outer wall of the pipe with the frosted layer 115 of the second arc clamping arm 114, creating an ideal interface for sealing and ensuring the sealing performance of the pipe sealing clamp in the later stage.
[0023] A pipeline plugging clamp sealing assembly process, using the aforementioned pipeline plugging clamp sealing assembly device, takes the sealing of a leak point in the middle of a pressurized pipeline as an example: The process includes the following steps: Step 1, preparation and positioning; Step 2, crab-shaped movement and grinding of the sealing surface; Step 3, inflation of the airbag strap and linkage clamping; Step 4, closure of the end plugging clamp seat; Step 5, resetting and disassembly. In step one, the pipe to which the sealing clamp needs to be installed is cleaned and positioned. The base 1 and the top seat 2 are opened by hinge 12, and the lower clamp seat 101 and the upper clamp seat 102 are also opened. The base 1 is placed under the pipe so that the pipe groove 3 clamps the pipe. The position is adjusted to ensure that the pipe is in the center. The top seat 2 and the upper clamp seat 102 are closed and temporarily fixed to the outer wall of the pipe by locking the buckle 13. The sealing clamp is temporarily fixed to one side of the pipe leak point for subsequent operations. In step two, according to the instructions, the solenoid three-way valve 7 is controlled to switch the air path and the air pump 5 is controlled to work, supplying air to the three-way connector 118 through the air supply main pipe 6 and the solenoid three-way valve 7; first, the first solenoid valve 1110 is opened and the second solenoid valve 1112 is closed. The gas enters the first cylinder 111 on both sides of the top seat 2 through the first air inlet pipe 119 and the first air manifold 116. The telescopic rod of the first cylinder 111 extends synchronously, driving the first arc clamping arm 112 to move relative to each other to clamp the pipe inside the top seat 2; The forward and reverse motor 108 rotates forward, driving the screw 107 to rotate. Since the screw 107 engages with the screw hole 106 on the lug 105, this engagement drives the lower clamp 101 and upper clamp 102 to move laterally along the guide post 104, i.e., the lower clamp 101 and upper clamp 102 move laterally along the pipeline. Then, the first solenoid valve 1110 is closed and the second solenoid valve 1112 is opened. Gas enters the second cylinder 113 through the second air inlet pipe 1111 and the second air manifold 117. The second cylinder 113... The telescopic rod extends, driving the second arc-shaped clamping arm 114 to move relative to the pipe inside the clamp seat; then the forward and reverse motor 108 is controlled to reverse, and under the meshing transmission of the screw 107 and the screw hole 106, the base 1 and the top seat 2 are driven to move closer to the clamp seat, that is, the base 1 and the top seat 2 move laterally along the pipe. The above operation is repeated according to the command, that is, the crab-shaped feeding movement of the sealing clamp on the pipe is controlled; and the first solenoid valve 1110 and the second solenoid valve 1112 are opened, and the gas enters the first solenoid valve 1112 simultaneously. Inside cylinder 111 and cylinder 113, the first arc clamping arm 112 and the second arc clamping arm 114 clamp the pipe. Then, the forward and reverse motor 108 is controlled to reciprocate forward and reverse. Under the meshing transmission of screw 107 and screw hole 106, the clamp seat is driven to reciprocate laterally along the pipe. The abrasive layer 115 on the second arc clamping arm 114 polishes the outer wall of the pipe, and polishes and cleans the oxide layer, rust or unevenness in the predetermined sealing area of the outer wall of the pipe, creating conditions for a perfect seal in the future. In step three, the sealing clamp is moved along the pipeline according to the crab-shaped feeding movement method described in step two. Base 1 and top seat 2 move to the pipeline grinding and cleaning position and cover the predetermined sealing area. When top seat 2 is placed on base 1, the airbag strap 4 on the inner wall of the pipe groove 3 initially covers the outer wall of the pipeline. The arc-shaped clamp 906 in the linkage sealing and binding assembly 9 aligns with the arc-shaped clamp groove 907 on base 1. The electromagnetic three-way valve 7 is controlled to switch the air path, and the air pump 5 is started. Air is supplied to the air injection branch pipe 8 through the main air supply pipe 6 and the electromagnetic three-way valve 7. First, the gas enters the airbag strap 4 through the injection branch pipe 8, causing it to expand and initially tighten the pipe. At the same time, some gas enters the middle of the arc groove 902 of the linkage sealing and binding assembly 9 through the injection branch pipe 8. The gas pressure pushes the two pistons 903 in the arc groove 902 to move towards both ends against the tension of the tension spring 904. The pistons 903 drive the arc clamping column 906 connected to them to move towards the center of the pipe along the trajectory of the arc clamping groove 907, thereby further clamping the expanded airbag strap 4 and the pipe from both sides, forming a stable composite clamping. In step four, the forward and reverse motor 108 is controlled to rotate, driving the screw 107 to rotate. Under the meshing transmission of the screw hole 106 of the screw 107, the clamps on both sides move closer to the base 1 and the top seat 2 along the guide post 104. During this process, the semi-conical sealing rings 109 arranged opposite to the clamps on both sides are inserted into the semi-conical sealing holes 1010 on both sides of the base 1 and the top seat 2. The semi-conical sealing rings 109 are pressed between the outer wall of the pipe and the semi-conical sealing holes 1010, forming a seal at the end of the sealing clamp. Finally, the locking nut at the end of the screw 107 is manually tightened to complete the final assembly and sealing of the entire sealing clamp. In step five, when it is necessary to disassemble the clamp, operate in the reverse order: loosen the locking nut, control the forward and reverse motor 108 to reverse to release the seal of the semi-cone sealing ring 109; release the pressure in each cylinder and airbag strap 4 through the solenoid valve; release the locking between the base 1 and the top seat 2, and the clamp can be removed from the pipeline.
[0024] This new pipeline plugging clamp sealing assembly process transforms the complex pipeline pressurized plugging operation into a programmable mechanized process, significantly improving the accuracy, efficiency, and safety of the operation, and has broad prospects for industrial application.
[0025] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0026] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "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. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pipe plugging clamp sealing assembly device, comprising a base (1); a top seat (2) is fitted onto the top outer wall of the base (1), and pipe grooves (3) are formed on the opposite outer walls of the base (1) and the top seat (2); characterized in that: An airbag strap (4) is attached to the inner wall of the groove (3). An air pump (5) is installed on the outer wall of the top side of the top seat (2). The air pump (5) is connected to the air supply pipe (6) at the air supply end. An electromagnetic three-way valve (7) is installed through the end of the air supply pipe (6). One end of the electromagnetic three-way valve (7) is connected to the air injection branch pipe (8). The end of the air injection branch pipe (8) is connected to the inside of the airbag strap (4). A linkage sealing and binding assembly (9) is provided on the inner walls of both ends of the base (1) and the top seat (2). An end sealing and sealing assembly (10) is provided on the outer walls of both ends of the base (1) and the top seat (2).
2. The pipe plugging clamp sealing assembly device according to claim 1, characterized in that: The linkage sealing and binding assembly (9) includes an arc frame (901) symmetrically fixed to the inner walls of both ends of the top seat (2). An arc groove (902) is provided inside the arc frame (901). A piston (903) is provided in the inner wall of both ends of the arc groove (902). A tension spring (904) is connected between the pistons (903). A through hole (905) is provided on the outer wall of both ends of the arc frame (901). 5) is equipped with arc-shaped clamping columns (906) inside, and the arc-shaped clamping columns (906) pass through the arc-shaped groove (902) and one end is connected to the outer wall of the piston (903). The inner walls of both ends of the base (1) are provided with arc-shaped clamping grooves (907) corresponding to the arc-shaped clamping columns (906). The airbag strap (4) is placed between the arc-shaped frame (901) and the arc-shaped clamping columns (906). The end of the air injection branch pipe (8) is connected to the middle of the arc-shaped groove (902).
3. The pipe plugging clamp sealing assembly device according to claim 1, characterized in that: The end-sealing assembly (10) includes a lower clamp seat (101) and an upper clamp seat (102) symmetrically arranged on the outer walls of both ends of the base (1) and the top seat (2). The lower clamp seat (101) and the upper clamp seat (102) are fitted together. Guide holes (103) are provided through the four corner outer walls of the lower clamp seat (101) and the upper clamp seat (102). Guide posts (104) are inserted into the guide holes (103). The ends of the guide posts (104) are fixedly connected to the four corner outer walls of both ends of the base (1) and the top seat (2). An ear block (105) is fixed on the outer wall of the top side of the upper clamp seat (102), and the outer wall of the end of the ear block (105) is through. A screw hole (106) is provided, and a screw rod (107) is screwed into the screw hole (106). A reversible motor (108) is fixed on the outer wall of the top two ends of the top seat (2). One end of the screw rod (107) is connected to the drive shaft end of the reversible motor (108). Semi-conical sealing rings (109) are symmetrically connected on the opposite outer walls of the base (1) and the top seat (2) on both sides. Semi-conical sealing holes (1010) are opened on the outer walls of the base (1) and the top seat (2) corresponding to the semi-conical sealing rings (109). Crab-shaped moving and grinding units (11) are provided on the lower clamp seat (101) and the upper clamp seat (102) and the outer walls of the base (1) and the top seat (2).
4. The pipe plugging clamp sealing assembly device according to claim 3, characterized in that: The crab-shaped moving and polishing unit (11) includes a first cylinder (111) symmetrically embedded and fixed on the outer walls of both ends of the base (1) and the top seat (2). One end of the telescopic rod of the first cylinder (111) is fixed with a first arc-shaped clamping arm (112). A second cylinder (113) is embedded and fixed on the middle outer wall of the lower clamp seat (101) and the upper clamp seat (102) on one side. One end of the telescopic rod of the second cylinder (113) is fixed with a second arc-shaped clamping arm (114), and a frosted layer (115) is provided on the opposite outer wall of the second arc-shaped clamping arm (114). A first air manifold (116) is connected between the air inlets of the first cylinder (111). A second air manifold (117) is connected between the air inlets of the two cylinders (113). One end of the electromagnetic three-way valve (7) is connected to a three-way connector (118). One end of the three-way connector (118) is connected to a first air inlet pipe (119). The ends of the first air inlet pipe (119) and the first air manifold (116) are connected. A first solenoid valve (1110) is installed through the end of the first air inlet pipe (119). One end of the three-way connector (118) is connected to a second air inlet pipe (1111). The ends of the second air inlet pipe (1111) and the second air manifold (117) are connected. A second solenoid valve (1112) is installed through the end of the second air inlet pipe (1111).
5. The pipe plugging clamp sealing assembly device according to claim 3, characterized in that: The lower clamp (101) and upper clamp (102) are each provided with a hinge (12) at one side of the connection between the lower clamp (1) and upper clamp (102) and the base (1) and the top seat (2). The lower clamp (101) and upper clamp (102) are respectively provided with locking buckles (13) on the other side of the outer wall of the base (1) and the top seat (2).
6. The pipe plugging clamp sealing assembly device according to claim 4, characterized in that: Both the first air manifold (116) and the second air manifold (117) are telescopic hoses.
7. The pipe plugging clamp sealing assembly device according to claim 1, characterized in that: An air filter (14) is installed through the air intake end of the air pump (5), and a sealing gasket is fitted to the cover connection of the base (1) and the top seat (2).
8. The pipe plugging clamp sealing assembly device according to claim 3, characterized in that: Each of the guide posts (104) has a limit block (15) fixed at its end, and the end of the screw (107) is screwed with a locking nut.
9. A sealing assembly process for a pipeline plugging clamp device, wherein the process employs the pipeline plugging clamp sealing assembly device as described in any one of claims 1-8, characterized in that: The process includes the following steps: Step 1, preparation and positioning; Step 2, crab-shaped movement and sealing surface grinding; Step 3, airbag strap inflation and linkage clamping; Step 4, end sealing clamp closure; Step 5, resetting and disassembly. In step one above, the pipe that needs to be fitted with the sealing clamp is cleaned and positioned. The base (1) and top seat (2) are opened by hinge (12), and the lower clamp seat (101) and upper clamp seat (102) are also opened. The base (1) is placed under the pipe, so that the pipe groove (3) clamps the pipe. The position is adjusted to ensure that the pipe is in the center. The top seat (2) and upper clamp seat (102) are closed and temporarily fixed to the outer wall of the pipe by locking the buckle (13). The sealing clamp is temporarily fixed on one side of the pipe leakage point for subsequent operation. In step two above, according to the instruction, the electromagnetic three-way valve (7) is controlled to switch the air path, and the air pump (5) is controlled to work, supplying air to the three-way connector (118) through the main air supply pipe (6) and the electromagnetic three-way valve (7); first, the first electromagnetic valve (1110) is opened and the second electromagnetic valve (1112) is closed, and the gas enters the first cylinder (111) on both sides of the top seat (2) through the first air inlet pipe (119) and the first air manifold (116). The telescopic rods of the first cylinder (111) extend synchronously, driving the first arc clamping arm (112) to move relative to the top seat (2). The pipe is clamped; the forward and reverse motor (108) is controlled to rotate forward, driving the screw (107) to rotate. Since the screw (107) meshes with the screw hole (106) on the lug (105), the meshing transmission drives the lower clamp (101) and the upper clamp (102) to move laterally along the guide post (104), that is, the lower clamp (101) and the upper clamp (102) move laterally along the pipe; then the first solenoid valve (1110) is closed and the second solenoid valve (1112) is opened, and the gas enters the second cylinder (1111) through the second air inlet pipe (1111) and the second air manifold (117). 13) The telescopic rod of the second cylinder (113) extends, driving the second arc clamping arm (114) to move relative to clamp the pipe inside the clamp seat; then control the forward and reverse motor (108) to reverse, and under the meshing transmission of the screw (107) and the screw hole (106), drive the base (1) and the top seat (2) to approach the clamp seat, that is, the base (1) and the top seat (2) move laterally along the pipe, and repeat the above operation according to the instruction, that is, control the crab-shaped feed movement of the sealing clamp on the pipe; and control the opening of the first solenoid valve (1110) and the opening of the second solenoid valve (1112). Gas enters the first cylinder (111) and the second cylinder (113) simultaneously. The first arc clamping arm (112) and the second arc clamping arm (114) clamp the pipe. Then, the forward and reverse motor (108) is controlled to move back and forth. Under the meshing transmission of the screw (107) and the screw hole (106), the clamp seat moves back and forth along the pipe. The abrasive layer (115) on the second arc clamping arm (114) polishes the outer wall of the pipe and cleans the oxide layer, rust or unevenness of the predetermined sealing area of the outer wall of the pipe, creating conditions for a perfect seal in the future. In step three above, the sealing clamp is controlled to move on the pipeline according to the crab-shaped feeding movement method in step two. The base (1) and the top seat (2) move to the pipeline grinding and cleaning position and cover the predetermined sealing area. When the top seat (2) is closed on the base (1), the airbag strap (4) on the inner wall of the pipe groove (3) initially covers the outer wall of the pipeline. The arc clamp (906) in the linkage sealing and binding assembly (9) is aligned with the arc clamp groove (907) on the base (1). The electromagnetic three-way valve (7) is controlled to switch the air path and start the air pump (5). The air is supplied to the gas injection branch pipe (8) through the main gas supply pipe (6) and the electromagnetic three-way valve (7). Gas is supplied, and the gas first enters the interior of the airbag strap (4) through the gas injection branch pipe (8), causing it to expand and initially tighten the pipe; at the same time, some gas enters the middle of the arc groove (902) of the linkage sealing and binding assembly (9) through the gas injection branch pipe (8). The gas pressure pushes the two pistons (903) in the arc groove (902) to overcome the tension of the tension spring (904) and move to both ends. The pistons (903) drive the arc clamping column (906) connected to them to move towards the center of the pipe along the trajectory of the arc clamping groove (907), thereby further clamping the expanded airbag strap (4) and the pipe from both sides to form a stable composite clamping; In step four above, the forward and reverse motor (108) is controlled to rotate, driving the screw (107) to rotate. Under the meshing transmission of the screw hole (106) of the screw (107), the clamps on both sides move closer to the base (1) and the top seat (2) along the guide post (104). During this process, the semi-conical sealing ring (109) set opposite to the clamps on both sides is inserted into the semi-conical sealing hole (1010) on both sides of the base (1) and the top seat (2). The semi-conical sealing ring (109) is pressed between the outer wall of the pipe and the semi-conical sealing hole (1010) to form a seal at the end of the sealing clamp. Finally, the locking nut at the end of the screw (107) is manually tightened to complete the final assembly and sealing of the entire sealing clamp. In step five above, when it is necessary to disassemble the clamp, the operation is carried out in the reverse order: loosen the locking nut, control the forward and reverse motor (108) to reverse to release the seal of the semi-cone sealing ring (109); release the pressure in each cylinder and airbag strap through the solenoid valve; release the locking between the base (1) and the top seat (2), and the clamp can be removed from the pipeline.