Self-pressure-regulating plugging device for rush repair construction of gas pipeline

Abstract

The invention relates to the technical field of gas pipeline maintenance, in particular to a self-pressure-regulating plugging device for gas pipeline first-aid repair construction, which comprises two groups of symmetrical pipe sealing modules, each pipe sealing module comprises a fixing unit, a sandwich valve is arranged at the top of each fixing unit, and a plugging control unit is arranged at the top of each sandwich valve. The plugging control unit comprises a lower vertical pipe, the top of the lower vertical pipe is communicated with a second electric ball valve, the top of the second electric ball valve is communicated with an upper vertical pipe, and a pipeline plugging mechanism is arranged in the upper vertical pipe in a lifting mode. Additional sealing operation is not needed, the first-aid repair time is saved, meanwhile, gas leakage is avoided, gas in the upper vertical pipe and the lower vertical pipe is directly discharged into the pipeline in the descending process of the lower blocking disc, therefore, the pressure regulating time is shortened, the risk of gas leakage caused by frequent opening and closing of all valves is avoided, and the working efficiency is improved. Meanwhile, the first-aid repair and pressure regulation time is saved, and the first-aid repair efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gas pipeline maintenance, and in particular relates to a self-pressure regulating gas pipeline emergency repair construction plugging device. Background Art

[0002] During long-term use, the walls of gas pipelines are prone to damage and cracks. In order to avoid safety hazards and economic losses caused by gas leakage, it is necessary to install sealing devices at both ends of the damaged pipe body, and then bridge them to achieve pipeline maintenance or replacement without affecting gas transportation.

[0003] After searching, the patent document with the cited publication number CN118361612A and the publication date July 19, 2024, named a plugging device for gas pipeline maintenance, includes a mounting rod, an electric drive moving wheel, a DD motor and a drive electric box; a DD motor is fixedly connected to the left and right sides of the mounting rod; the rotating part of each DD motor is fixedly connected to a drive electric box, and the drive electric box is used to provide power for the equipment; each drive electric box is fixedly connected to two electric drive moving wheels, and an electric-controlled telescopic part a is arranged between the electric drive moving wheel and the drive electric box; the entire equipment is driven to move in the pipeline by the electric drive moving wheel, and the gas pipeline is plugged by unfolding the plugging cover. Compared with the existing plugging method, it can reduce a lot of manpower and material resources, has a high plugging efficiency, and will not cause damage to the pipeline during plugging. At the same time, the gas pipeline is double-blocked by the plugging cover one and the plugging cover two, which further avoids gas leakage during the construction period after plugging.

[0004] The above embodiment still has the following defects:

[0005] When the pipe opening needs to be sealed after the plugging is completed, external equipment is still required to perform additional sealing work, and during the sealing work, the valves need to be frequently opened and closed, which can easily lead to gas leakage, which not only prolongs the working time and reduces efficiency, but also brings safety hazards. Summary of the invention

[0006] In view of the above problems, the present invention provides a self-regulating gas pipeline emergency repair construction plugging device, comprising two groups of symmetrical pipe sealing modules, the pipe sealing modules comprising a fixing unit, a clamping valve is provided on the top of the fixing unit, and a plugging control unit is provided on the top of the clamping valve.

[0007] The blocking control unit comprises a lower riser, the top of the lower riser is connected to a second electric ball valve, the top of the second electric ball valve is connected to an upper riser, a pipeline blocking mechanism is lifted and lowered in the upper riser, a sealing plate component is connected to one side of the pipeline blocking mechanism, a lower blocking mechanism is movably connected to the bottom of the pipeline blocking mechanism, and the lower blocking mechanism is movably connected to the top opening of the fixed unit;

[0008] During the plugging process, the lower plugging mechanism descends with the pipeline plugging mechanism and the sealing plate components. After completion, the lower plugging mechanism is separated from the pipeline plugging mechanism during the rising process of each component and is sealed at the top opening of the fixed unit, saving plugging time and reducing leakage risks.

[0009] Furthermore, the fixing unit includes an upper pipe clamping mechanism and a lower pipe clamping mechanism, the upper pipe clamping mechanism has the same structure as the lower pipe clamping mechanism, and the two are symmetrically arranged in the vertical direction; the upper pipe clamping mechanism includes a first crescent plate, and two groups of extension plates are symmetrically installed at both ends of the first crescent plate, and a fixing screw is installed between the two groups of extension plates on the same side of the upper pipe clamping mechanism and the lower pipe clamping mechanism, and a side limiting mechanism is installed on the fixing screw.

[0010] Furthermore, a top opening is opened at the top center of the upper clamping tube mechanism, and several groups of longitudinal through grooves are distributed in a circular array on the inner wall of the top opening. A sealing interface is installed at the top opening of the top opening, and several groups of clamps with the same number as the longitudinal through grooves are distributed in a circular array at the bottom edge of the sealing interface, and each group of the clamps is connected to a corresponding group of longitudinal through grooves.

[0011] Furthermore, a second pressure relief valve is connected to the side wall of the lower riser, and an intermediary interface is provided on the lower riser, and a first electric ball valve is provided on the intermediary interface.

[0012] Furthermore, a top pipe is provided at the center of the top of the upper riser, an electric push rod is installed on the inner wall of the top of the top pipe, the bottom of the electric push rod extends into the upper riser and is connected to the pipeline blocking mechanism.

[0013] Furthermore, the pipeline blocking mechanism includes a lifting block, a hollow cylinder is provided on the top of the lifting block, a servo motor is provided on the top of the hollow cylinder, a rotating rod is transmission-connected to the output end of the servo motor, the bottom of the rotating rod extends into the lifting block through the hollow cylinder, and a turntable is installed at the bottom, a protrusion is provided on one side wall of the turntable, and a slope is provided on the side wall of the protrusion away from the turntable.

[0014] Furthermore, a bottom slide groove is opened on the inner wall at the bottom of the lifting block, a slider is slidably connected in the bottom slide groove, a return spring is provided on one side of the slider, and a transverse plate is installed on the top of the slider, and the transverse plate is slidably fitted with the inclined surface; a plurality of groups of inclined rod slide grooves are distributed in a circular array on the outer wall on one side of the lifting block close to the sealing plate component.

[0015] Furthermore, the sealing plate component includes a central sealing plate, which is connected to a cross bar, and a number of groups of folding sealing plates with the same number as the diagonal bars are distributed in a circular array around the edges of the central sealing plate, each group of the folding sealing plates is hinged to a corresponding group of diagonal bars, and each group of the folding sealing plates is hinged to the central sealing plate; sealing strips are provided on the side walls around each group of the folding sealing plates.

[0016] Furthermore, the lower blocking mechanism includes a vacuum suction cup, and a lower blocking plate is movably installed at the bottom of the vacuum suction cup. The lower blocking plate is a truncated cone structure, and the top diameter is smaller than the bottom diameter; a number of groups of spring blocks with the same number as the bayonet are distributed in a circular array on the side walls around the lower blocking plate.

[0017] Furthermore, the bottom of the spring block is hinged to the lower blocking plate through a torsion spring, and the top is movably passed through a corresponding set of through holes and then clamped in a corresponding set of bayonet holes.

[0018] The beneficial effects of the present invention are:

[0019] 1. Since the bottom of the spring block is hinged to the lower plugging plate, the spring block will be folded when the lower plugging mechanism descends, so it will not affect the descent. When the lower plugging mechanism moves into the pipeline, the top of each group of spring blocks will instantly pop open under the action of the torsion spring. And during the ascent, it moves along the through hole to the bayonet and snaps in, thereby completing the closure of the top opening. No additional sealing operation is required, which saves repair time and avoids gas leakage. In addition, during the descent of the lower plugging plate, the gas in the upper and lower risers is directly discharged into the pipeline, which also reduces the pressure regulation time, that is, it solves the risk of gas leakage caused by frequent opening and closing of valves, while saving repair and pressure regulation time and improving repair efficiency.

[0020] 2. First, the upper and lower clamping mechanisms are pressed against the pipe from both ends, and then the two sets of side limit mechanisms are pressed against the official road from both sides, so that the pipe has a structure for fixing all around. And the fixing screws used to fix the two sets of extension plates on the same side pass through the vertical plate, and the vertical plate and the two sets of inclined plates form a triangular structure, which forms a stable triangular support structure between the extension plate and the pipe, thereby improving the fixing effect of the overall vertical and horizontal directions of the fixing unit, and also improving the defense effect against external forces.

[0021] 3. By changing the original soft sealing plate to a central sealing plate and several groups of folding sealing plates distributed in a circular array, the problem of easy deformation of the soft sealing plate is avoided, and the service life of the sealing plate components is extended. At the same time, by controlling the opening range of each group of folding sealing plates, the device can be suitable for pipes of any size without replacing the matching parts, thereby improving the compatibility of the device.

[0022] 4. By setting the lower plugging plate to a truncated cone structure, the gas can flow back inside the lower plugging plate, reducing the impact of the gas pressure on the lower plugging plate, thereby ensuring the sealing effect and improving the durability of the lower plugging plate.

[0023] 5. The device is divided into several independent chambers by the clamp valve, the second electric ball valve and the first electric ball valve, and the self-pressure regulation is realized by adjusting the switches thereof. The independent pressure regulation is realized by the first pressure relief valve and the second pressure relief valve without affecting the pressure of other chambers.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a blocking device according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic structural diagram of a tube sealing module according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic diagram of the connection between a clamp valve and a PE opening machine according to an embodiment of the present invention is shown.

[0029] Figure 4 A structural schematic diagram of a fixing unit according to an embodiment of the present invention is shown.

[0030] Figure 5 A bottom view schematically shows a top opening according to an embodiment of the present invention.

[0031] Figure 6 A schematic structural diagram of a side limiting mechanism according to an embodiment of the present invention is shown.

[0032] Figure 7 A schematic structural diagram of a blocking control unit according to an embodiment of the present invention is shown.

[0033] Figure 8 A cross-sectional schematic diagram of an upper riser according to an embodiment of the present invention is shown.

[0034] Fig. 9 A cross-sectional schematic diagram of a pipeline plugging mechanism according to an embodiment of the present invention is shown.

[0035] Fig.10 A schematic top view of a turntable according to an embodiment of the present invention is shown.

[0036] Fig.11 A schematic structural diagram of a sealing plate component according to an embodiment of the present invention is shown.

[0037] Fig.12 A schematic structural diagram of a sealing plate component when opened according to an embodiment of the present invention is shown.

[0038] Fig.13 A structural schematic diagram of a lower blocking mechanism according to an embodiment of the present invention is shown.

[0039] In the figure: 100, fixing unit; 110, first crescent plate; 120, extension plate; 130, top opening; 131, sealing interface; 132, longitudinal through groove; 133, bayonet; 140, fixing screw; 150, side limit mechanism; 151, vertical plate; 152, second crescent plate; 153, inclined plate; 154, through hole; 200, sealing adapter sleeve; 201, first pressure relief valve; 300, clamp valve; 400, blocking control unit; 401, second pressure relief valve; 410, lower riser; 411, interface; 412, first electric ball valve; 420, second electric ball valve; 430, upper riser; 431, top pipe ;432, electric push rod;433, bottom slide;434, slider;435, return spring;436, inclined rod slide;437, push block;440, pipeline blocking mechanism;441, lifting block;442, empty cylinder;443, servo motor;444, rotating rod;445, turntable;4451, bump;4452, inclined plane;446, transverse plate;447, cross bar;448, inclined rod;450, sealing plate component;451, center sealing plate;452, folding sealing plate;460, lower blocking mechanism;461, lower blocking plate;462, spring block;463, vacuum suction cup;500, temporary pipe;600, PE hole opening machine. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the present invention provides a self-regulating gas pipeline emergency repair plugging device, comprising two sets of symmetrically arranged pipe sealing modules, the pipe sealing modules comprising a fixing unit 100. The fixing unit 100 is used to fix with the pipeline.

[0042] A sealing adapter sleeve 200 is movably installed on the top of the fixing unit 100 , and a first pressure relief valve 201 is provided on the sealing adapter sleeve 200 .

[0043] A clamp valve 300 is movably installed on the top of the sealing adapter sleeve 200, and a blocking control unit 400 is movably installed on the top of the clamp valve 300. The cavity of the blocking control unit 400 is connected with the cavities of the fixed unit 100, the sealing adapter sleeve 200, and the clamp valve 300. The blocking control unit 400 is used to block the pipeline.

[0044] A PE hole puncher 600 is also movably mounted on the top of the sealing adapter sleeve 200. The PE hole puncher 600 is used to punch holes in the pipeline, so as to facilitate the output end of the blocking control unit 400 to extend into the pipeline.

[0045] Specifically, the blocking control units 400 of the two groups of the sealing modules are connected to each other via a temporary pipe 500. The temporary pipe 500 is used to facilitate the transportation of gas during pipeline maintenance and ensure the continuity of gas transportation.

[0046] like Figure 4 and Figure 5 As shown, the fixing unit 100 includes an upper pipe clamping mechanism and a lower pipe clamping mechanism, the upper pipe clamping mechanism and the lower pipe clamping mechanism have the same structure, and the two are symmetrically arranged in the vertical direction. The upper pipe clamping mechanism includes a first crescent plate 110, and two groups of extension plates 120 are symmetrically installed at both ends of the first crescent plate 110. A fixing screw 140 is installed between the two groups of extension plates 120 on the same side of the upper pipe clamping mechanism and the lower pipe clamping mechanism, and a side limit mechanism 150 is installed on the fixing screw 140.

[0047] A top opening 130 is opened at the top center of the upper clamping tube mechanism, and a plurality of groups of longitudinal through grooves 132 are distributed in a circular array on the inner wall of the top opening 130. A sealing interface 131 is installed at the top opening of the top opening 130, and a plurality of groups of clamping holes 133 with the same number as the longitudinal through grooves 132 are distributed in a circular array at the bottom edge of the sealing interface 131, and each group of the clamping holes 133 is connected to a corresponding group of longitudinal through grooves 132.

[0048] like Figure 6As shown, the side limit mechanism 150 includes a vertical plate 151, and a through hole 154 is formed on the vertical plate 151 in the vertical direction, and the fixing screw 140 passes through the through hole 154. A second crescent plate 152 is provided on the side of the vertical plate 151 close to the central axis of the first crescent plate 110, and a group of inclined plates 153 are provided at the upper and lower edges of the vertical plate 151, and the other ends of the two groups of inclined plates 153 are inclined and extended toward the center point of the second crescent plate 152 and are installed on the second crescent plate 152. The vertical plate 151 and the two groups of inclined plates 153 form a triangular structure.

[0049] First, the upper pipe clamping mechanism and the lower pipe clamping mechanism are respectively pressed against the pipe from the upper and lower ends, and then the two sets of side limit mechanisms 150 are respectively placed in the gap between the upper pipe clamping mechanism and the lower pipe clamping mechanism from both sides of the pipe, and the second crescent plate 152 is attached to the pipe from the side. Then the fixing screw 140 is passed through the two sets of extension plates 120 and the through hole 154 on the same side, thereby completing the installation of the fixing unit 100.

[0050] First, the upper pipe clamping mechanism and the lower pipe clamping mechanism are pressed against the pipe from the upper and lower ends, and then the two sets of side limit mechanisms 150 are pressed against the official road from both sides, so that the pipe has a structure for fixing all around. And the fixing screws 140 used to fix the two sets of extension plates 120 on the same side pass through the vertical plate 151, and the vertical plate 151 and the two sets of inclined plates 153 form a triangular structure, which forms a stable triangular support structure between the extension plate 120 and the pipe, thereby improving the fixing effect of the fixing unit 100 in the vertical and horizontal directions as a whole, and also improving the defense effect against external forces.

[0051] like Figure 7 and Figure 8 As shown, the blocking control unit 400 includes a lower riser 410, a second pressure relief valve 401 is connected to the side wall of the lower riser 410, and a temporary interface 411 is provided on the lower riser 410, a first electric ball valve 412 is provided on the temporary interface 411, and both ends of the temporary pipe 500 are respectively connected to the temporary interfaces 411 of the two groups of sealing pipe modules.

[0052] The top of the lower riser 410 is connected to a second electric ball valve 420, and the top of the second electric ball valve 420 is connected to an upper riser 430. A top pipe 431 is provided at the center of the top of the upper riser 430. An electric push rod 432 is installed on the inner wall of the top of the top pipe 431. The bottom of the electric push rod 432 extends into the upper riser 430 and is installed with a pipeline plugging mechanism 440. A sealing plate component 450 is provided on one side of the pipeline plugging mechanism 440. A lower plugging mechanism 460 is provided at the bottom of the pipeline plugging mechanism 440, and the lower plugging mechanism 460 is movably connected with the top opening 130.

[0053] like Fig. 9 and Fig.10As shown, the pipeline plugging mechanism 440 includes a lifting block 441, a hollow cylinder 442 is provided on the top of the lifting block 441, a servo motor 443 is provided on the top of the hollow cylinder 442, a rotating rod 444 is connected to the output end of the servo motor 443, the bottom of the rotating rod 444 extends into the lifting block 441 through the hollow cylinder, and a rotating disk 445 is installed at the bottom, a protrusion 4451 is provided on one side wall of the rotating disk 445, and a slope 4452 is provided on the side wall of the protrusion 4451 away from the rotating disk 445. A bottom slide 433 is provided on the inner wall of the bottom of the lifting block 441, a slider 434 is slidably connected in the bottom slide 433, a reset spring 435 is provided on one side of the slider 434, and a transverse plate 446 is installed on the top of the slider 434, and the transverse plate 446 is slidably fitted with the slope 4452. A plurality of groups of inclined rod slides 436 are distributed in a circular array on the outer wall of the lifting block 441 near the sealing plate component 450.

[0054] A cross bar 447 is fixedly installed in the horizontal direction at the center of one side wall of the transverse plate 446 away from the rotating rod 444, and the other end of the cross bar 447 extends to the outside of the lifting block 441 and is installed on the sealing plate component 450. A plurality of groups of inclined rods 448 having the same number as the inclined rod slots 436 are distributed in a circular array around the cross bar 447, and one end of the plurality of groups of inclined rods 448 is hinged to the transverse plate 446 through a torsion spring, and the other end of the plurality of groups of inclined rods 448 extends radially and obliquely around, and extends to the outside of the lifting block 441 through a corresponding group of inclined rod slots 436, and is installed on the sealing plate component 450.

[0055] Specifically, a group of push blocks 437 are provided at the edge of each group of the inclined rod sliding grooves 436 , and each group of the inclined rods 448 is slidably fitted with the corresponding group of push blocks 437 .

[0056] like Fig.11 and 12 As shown, the sealing plate component 450 includes a central sealing plate 451, which is connected to the cross bar 447. A number of groups of folding sealing plates 452 are distributed in a circular array around the edges of the central sealing plate 451, and the number of the same number as the inclined rods 448, and each group of the folding sealing plates 452 is hinged to a corresponding group of inclined rods 448, and each group of the folding sealing plates 452 is hinged to the central sealing plate 451. Sealing strips are provided on the side walls around each group of the folding sealing plates 452.

[0057] like Fig.13As shown, the lower blocking mechanism 460 includes a vacuum suction cup 463, and a lower blocking plate 461 is movably mounted at the bottom of the vacuum suction cup 463. The lower blocking plate 461 is a truncated cone structure, and the top diameter is smaller than the bottom diameter. A number of groups of spring blocks 462 with the same number as the bayonet 133 are distributed in a circular array on the side walls around the lower blocking plate 461. The bottom of the spring block 462 is hinged to the lower blocking plate 461 through a torsion spring, and the top is movably penetrated through a corresponding group of through holes 154 and then clamped in a corresponding group of bayonet 133.

[0058] First, install the PE hole opening machine 600 on the top of the clamp valve 300, then open a through hole on the top of the pipeline through the top opening 130, then close the clamp valve 300, and install the blocking control unit 400 on the clamp valve 300 as a whole. At this time, open the clamp valve 300 again, and drive the pipeline blocking mechanism 440, the sealing plate component 450 and the lower blocking mechanism 460 to descend into the pipeline as a whole through the electric push rod 432. Then start the servo motor 443, and drive the rotating rod 444 and the rotating disk 445 to rotate through the servo motor 443, so that the transverse plate 446 slides and fits with the inclined surface 4452, so that the transverse plate 446 is pushed horizontally toward the sealing plate component 450. While the transverse plate 446 is moving, each set of inclined rods 448 and each set of corresponding push blocks 437 are slidingly fitted, so that the angle between the inclined rods 448 and the transverse rods 447 gradually increases while the inclined rods 448 are moving, so that each set of folding sealing plates 452 is opened at a uniform speed until the edge of each set of folding sealing plates 452 fits the inner wall of the pipeline, thereby achieving the blocking of the pipeline.

[0059] When the operation of the two sets of pipe sealing modules is completed, the gas will be transmitted through the temporary interface 411 and the temporary pipe 500. At this time, the damaged pipeline between the two sets of pipe sealing modules can be directly replaced or repaired.

[0060] After the replacement is completed, the servo motor 443 is started to rotate in the opposite direction, so that the central sealing plate 451 moves horizontally toward the lifting block 441, and each group of folding sealing plates 452 is refolded. Then the electric push rod 432 is started to drive the pipeline blocking mechanism 440, the sealing plate component 450 and the lower blocking mechanism 460 to rise.

[0061] Furthermore, since the bottom of the bullet block 462 is hinged to the lower plugging plate 461, when the lower plugging mechanism 460 descends, the bullet block 462 will be folded, so as not to affect the descent. When the lower plugging mechanism 460 moves into the pipeline, under the action of the torsion spring, the top of each group of bullet blocks 462 instantly pops open. And during the ascending process, it moves along the through hole 154 to the bayonet 133 and snaps in, thereby completing the closure of the top opening 130. No additional sealing operation is required, which saves repair time and avoids gas leakage. Moreover, during the descent of the lower plugging plate 461, the gas in the upper riser 430 and the lower riser 410 is directly discharged into the pipeline, thereby reducing the pressure adjustment time. And by setting the lower plugging plate 461 to a truncated cone structure, the gas can form a reflux in the lower plugging plate 461, reducing the impact of the air pressure on the lower plugging plate 461, thereby ensuring the sealing effect and improving the durability of the lower plugging plate 461.

[0062] By changing the original soft sealing plate into a central sealing plate 451 and several groups of folding sealing plates 452 distributed in a circular array, the problem of easy deformation of the soft sealing plate is avoided and the service life of the sealing plate components is extended. At the same time, by controlling the opening range of each group of folding sealing plates 452, the device can be suitable for pipes of any size without replacing the matching parts, thereby improving the compatibility of the device.

[0063] The above embodiments have the following beneficial effects:

[0064] 1. Since the bottom of the block 462 is hinged to the lower plugging plate 461, the block 462 will be folded when the lower plugging mechanism 460 descends, so as not to affect the descent. When the lower plugging mechanism 460 moves into the pipeline, under the action of the torsion spring, the top of each group of blocks 462 instantly pops open. And during the ascending process, it moves along the through hole 154 to the bayonet 133 and snaps in, thereby completing the closure of the top opening 130. No additional sealing operation is required, which saves repair time and avoids gas leakage. In addition, during the descent of the lower plugging plate 461, the gas in the upper riser 430 and the lower riser 410 is directly discharged into the pipeline, thereby reducing the pressure regulation time, that is, solving the risk of gas leakage caused by frequent opening and closing of each valve, while saving repair and pressure regulation time, and improving repair efficiency.

[0065] 2. First, the upper pipe clamping mechanism and the lower pipe clamping mechanism are pressed against the pipe from the upper and lower ends, and then the two sets of side limit mechanisms 150 are pressed against the official road from both sides, so that the pipe has a structure for fixing all around. And the fixing screws 140 used to fix the two sets of extension plates 120 on the same side pass through the vertical plate 151, and the vertical plate 151 and the two sets of inclined plates 153 form a triangular structure, which forms a stable triangular support structure between the extension plate 120 and the pipe, thereby improving the fixing effect of the fixing unit 100 in the vertical and horizontal directions as a whole, and also improving the defense effect against external forces.

[0066] 3. By changing the original soft sealing plate into a central sealing plate 451 and several groups of folding sealing plates 452 distributed in a ring array, the problem of easy deformation of the soft sealing plate is avoided, and the service life of the sealing plate components is extended. At the same time, by controlling the opening range of each group of folding sealing plates 452, the device can be suitable for pipes of any size without replacing the matching parts, thereby improving the compatibility of the device.

[0067] 4. By setting the lower plugging plate 461 as a truncated cone structure, the gas can form a backflow in the lower plugging plate 461, reducing the impact of the gas pressure on the lower plugging plate 461, thereby ensuring the sealing effect and improving the durability of the lower plugging plate 461.

[0068] 5. The whole device is divided into several independent chambers by the clamp valve 300, the second electric ball valve 420 and the first electric ball valve 412, and the self-pressure regulation is realized by adjusting the switches thereof, and the independent pressure regulation is realized by the first pressure relief valve 201 and the second pressure relief valve 401 without affecting the pressure of other chambers.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-regulating gas pipeline emergency repair plugging device, comprising two sets of symmetrical pipe sealing modules, wherein the pipe sealing modules include a fixing unit (100), characterized in that: A clamping valve (300) is provided on the top of the fixing unit (100), and a blocking control unit (400) is provided on the top of the clamping valve (300); The blocking control unit (400) comprises a lower riser (410), the top of the lower riser (410) is connected to a second electric ball valve (420), the top of the second electric ball valve (420) is connected to an upper riser (430), a pipeline blocking mechanism (440) is arranged in a lifting manner in the upper riser (430), one side of the pipeline blocking mechanism (440) is connected to a sealing plate component (450) in a transmission manner, the bottom of the pipeline blocking mechanism (440) is movably connected to a lower blocking mechanism (460), and the lower blocking mechanism (460) is movably engaged with the top opening of the fixing unit (100); During the plugging process, the lower plugging mechanism (460) descends along with the pipeline plugging mechanism (440) and the sealing plate component (450). After completion, the lower plugging mechanism (460) is separated from the pipeline plugging mechanism (440) and is plugged at the top opening of the fixed unit (100) during the ascending process of each component, thereby saving plugging time and reducing the risk of leakage.

2. A self-regulating gas pipeline emergency repair plugging device according to claim 1, characterized in that: The fixing unit (100) comprises an upper pipe clamping mechanism and a lower pipe clamping mechanism, the upper pipe clamping mechanism and the lower pipe clamping mechanism have the same structure, and the two are symmetrically arranged in a vertical direction; the upper pipe clamping mechanism comprises a first crescent plate (110), two groups of extension plates (120) are symmetrically installed at both ends of the first crescent plate (110), a fixing screw (140) is installed between the two groups of extension plates (120) located on the same side of the upper pipe clamping mechanism and the lower pipe clamping mechanism, and a side limit mechanism (150) is installed on the fixing screw (140).

3. A self-regulating gas pipeline emergency repair plugging device according to claim 2, characterized in that: A top opening (130) is provided at the center of the top of the upper clamping tube mechanism, and a plurality of groups of longitudinal through grooves (132) are distributed in an annular array on the inner wall of the top opening (130). A sealing interface (131) is installed at the top opening of the top opening (130), and a plurality of groups of clamping openings (133) having the same number as the longitudinal through grooves (132) are distributed in an annular array at the bottom edge of the sealing interface (131), and each group of the clamping openings (133) is connected to a corresponding group of longitudinal through grooves (132).

4. A self-regulating gas pipeline emergency repair plugging device according to claim 1, characterized in that: The side wall of the lower riser (410) is connected to a second pressure relief valve (401), and the lower riser (410) is provided with an interface (411), and the interface (411) is provided with a first electric ball valve (412).

5. A self-regulating gas pipeline emergency repair plugging device according to claim 4, characterized in that: A top pipe (431) is provided at the top center of the upper riser (430), an electric push rod (432) is installed on the top inner wall of the top pipe (431), and the bottom of the electric push rod (432) extends into the upper riser (430) and is connected to the pipeline blocking mechanism (440).

6. A self-regulating gas pipeline emergency repair plugging device according to claim 5, characterized in that: The pipeline plugging mechanism (440) comprises a lifting block (441), a hollow cylinder (442) is provided on the top of the lifting block (441), a servo motor (443) is provided on the top of the hollow cylinder (442), a rotating rod (444) is drivingly connected to the output end of the servo motor (443), the bottom of the rotating rod (444) extends into the lifting block (441) through the hollow cylinder, and a rotating disk (445) is installed at the bottom, a protrusion (4451) is provided on one side wall of the rotating disk (445), and a slope (4452) is provided on the side wall of the protrusion (4451) away from the rotating disk (445).

7. A self-regulating gas pipeline emergency repair plugging device according to claim 6, characterized in that: A bottom slide groove (433) is provided on the inner wall at the bottom of the lifting block (441), and a slider (434) is slidably connected in the bottom slide groove (433). A return spring (435) is provided on one side of the slider (434), and a transverse plate (446) is installed on the top of the slider (434), and the transverse plate (446) is slidably fitted with the inclined surface (4452); a plurality of groups of inclined rod slide grooves (436) are distributed in a circular array on the outer wall of one side of the lifting block (441) close to the sealing plate component (450).

8. The self-regulating gas pipeline emergency repair plugging device according to claim 7 is characterized in that: The sealing plate component (450) includes a central sealing plate (451), which is connected to the cross bar (447). A number of groups of folding sealing plates (452) having the same number as the inclined bars (448) are distributed in a circular array around the edges of the central sealing plate (451). Each group of folding sealing plates (452) is hinged to a corresponding group of inclined bars (448), and each group of folding sealing plates (452) is hinged to the central sealing plate (451); sealing strips are provided on the side walls around each group of folding sealing plates (452).

9. The self-regulating gas pipeline emergency repair plugging device according to claim 2 is characterized in that: The lower blocking mechanism (460) comprises a vacuum suction cup (463), a lower blocking plate (461) being movably mounted at the bottom of the vacuum suction cup (463), the lower blocking plate (461) being a truncated cone structure, and the top diameter being smaller than the bottom diameter; a plurality of groups of spring blocks (462) having the same number as the bayonet (133) are distributed in a circular array on the side walls surrounding the lower blocking plate (461).

10. A self-regulating gas pipeline emergency repair plugging device according to claim 9, characterized in that: The bottom of the spring block (462) is hinged to the lower blocking plate (461) via a torsion spring, and the top is movably passed through a corresponding set of through holes (154) and then clamped in a corresponding set of clamping ports (133).

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