Emergency leaking stoppage device for oil and gas pipeline leakage

Abstract

The invention belongs to the technical field of oil and gas pipeline leaking stoppage, and particularly relates to an oil and gas pipeline leakage emergency leaking stoppage device which comprises a temporary fixing mechanism, a lifting type sealing mechanism is fixedly arranged at the top of the temporary fixing mechanism, and a crack opening mechanism, a lifting mechanism and a hydraulic sensor are fixedly arranged on the lifting type sealing mechanism. According to the pipeline plugging device, plugging can be conducted from the interior of a pipeline, the pipeline plugging device can adapt to irregular surfaces, the situation that sealing is not tight due to pipeline deformation or shape mismatching is avoided, resin plugging liquid is filled into the filling groove through the first liquid inlet pipe fitting and the second liquid inlet pipe fitting, and after the resin plugging liquid is solidified, a crack or a corrosion area can be accurately covered; according to the rubber oil and gas pipeline plugging agent, a barrier tightly attached to the inner wall of a pipeline is formed, secondary permanent plugging can be conducted on a leakage point, solidified resin can play a role in plugging, the rubber oil and gas pipeline can be reinforced from the interior, the service life of the rubber oil and gas pipeline is prolonged, secondary leakage caused by secondary deformation of the leakage position can be avoided, and the plugging effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas pipeline leak plugging, and particularly relates to an emergency leak plugging device for oil and gas pipelines. Background Art

[0002] Because metal materials have high strength, are resistant to high pressure, and can withstand relatively high temperatures, most of the existing pipelines used for long-distance oil and gas transportation are made of carbon steel or stainless steel. However, in certain specific situations, such as short-distance transportation in a low-pressure environment, scenarios that require bending and movement, or temporary and auxiliary scenarios that require flexible connection, rubber pipelines are used to transport oil and gas. During long-term use of rubber pipelines, due to factors such as pipeline pressure changes and the external environment, local leaks often occur in the pipelines. On the one hand, it causes waste of resources, and on the other hand, it is also prone to safety accidents such as fires or explosions;

[0003] Existing pressure-bearing leak plugging devices generally install customized fixtures outside the leakage point and seal and block oil and gas pipelines by means of a sealing gasket and bolt pressurization. There are generally the following problems: First, external clamping is limited by the external shape of the oil and gas pipeline, and it is easy to cause shape mismatch due to pipeline deformation, resulting in poor sealing; Second, rubber pipelines are prone to deformation. When using the method of installing customized fixtures outside the leakage point for plugging, it is easy to cause secondary leakage due to pipeline bending and deformation later, and it cannot improve the pressure-bearing capacity of the pipeline and extend its service life.

[0004] To solve the above problems, an emergency leak plugging device for oil and gas pipelines is proposed in this application. Summary of the Invention

[0005] The present invention provides an emergency leak plugging device for oil and gas pipelines, which can effectively solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An emergency leak plugging device for oil and gas pipelines includes a temporary fixing mechanism, on the top of which an elevating sealing mechanism is fixedly provided. A crack opening mechanism, a lifting mechanism and a hydraulic sensor are fixedly provided on the elevating sealing mechanism. An upper plug-in pipe fitting and a first liquid inlet pipe fitting are inserted through the lifting mechanism. The bottom ends of the upper plug-in pipe fitting and the first liquid inlet pipe fitting are plugged with a sheet-shaped plugging mechanism;

[0007] The sheet-shaped plugging mechanism includes an arc-shaped plugging plate with a receiving groove at the top and connecting ears provided at both ends of the arc-shaped plugging plate. A lower plug-in pipe fitting and a second liquid inlet pipe fitting are inserted through the arc-shaped plugging plate. The bottom end of the lower plug-in pipe fitting is fixedly connected with an annular airbag and a liquid suction pipe fitting, and the liquid suction pipe fitting is sleeved outside the annular airbag. Liquid suction holes are opened on the outer side of the bottom end of the liquid suction pipe fitting.

[0008] Preferably, the temporary fixing mechanism includes a lower clamping member and an upper clamping member, and a fixing screw is provided between the lower clamping member and the upper clamping member.

[0009] Preferably, the lifting and sealing mechanism includes a connecting seat fixedly arranged at the top of the upper clamping member. The top end of the connecting seat is fixedly connected with a corrugated connecting kit. A sealing cylinder body is arranged at the top end of the corrugated connecting kit. A connecting plate is fixedly arranged on the outer side of the top end of the sealing cylinder body. A first hydraulic expansion rod is fixedly arranged between the connecting plate and the connecting seat. Oil discharge ports are symmetrically arranged on the outer side of the connecting seat, and valves are arranged on the oil discharge ports.

[0010] An insertion opening is arranged at the top end of the sealing cylinder body, and a rubber sealing ring is fixedly arranged inside the insertion opening.

[0011] Preferably, the crack opening mechanism includes a second hydraulic expansion rod fixedly arranged on the outer side of the lifting and sealing mechanism. A connecting member is fixedly arranged at one end of the second hydraulic expansion rod. A push-pull rod is fixedly connected to one side of the connecting member. An installation plate member is fixedly connected to one end of the push-pull rod. A crack opening plate with a puncture tip is arranged at the bottom of the installation plate member.

[0012] The push-pull rod is slidably inserted through both sides of the sealing cylinder body, and a sealing ring is arranged at the connection between the sealing cylinder body and the push-pull rod.

[0013] Preferably, the lifting mechanism includes an extension platform fixedly arranged on the outer side of the lifting and sealing mechanism. A third hydraulic expansion rod is fixedly arranged on the extension platform, and a lifting plate member is fixedly arranged at the top end of the third hydraulic expansion rod.

[0014] Preferably, the upper pluggable pipe fitting includes a first outer sleeve rod rotatably arranged on the lifting plate member through a bearing. A first inner sleeve rod is fixedly arranged inside the first outer sleeve rod. A self-sealing male joint is fixedly arranged inside the bottom end of the first inner sleeve rod. The top end of the first inner sleeve rod penetrates through the first outer sleeve rod and is connected with a first pipe joint. A liquid outlet channel is formed between the first outer sleeve rod and the first inner sleeve rod. A liquid outlet pipe is fixedly arranged on the outer side of the first outer sleeve rod. A second pipe joint is arranged at one end of the liquid outlet pipe. A positioning insertion hole is opened at the bottom end of the first outer sleeve rod.

[0015] Preferably, the first liquid inlet pipe fitting includes a liquid inlet pipe body fixedly inserted through the lifting plate member. A third pipe joint is fixedly arranged at the top end of the liquid inlet pipe body. A bending shielding portion is arranged on the liquid inlet pipe body.

[0016] Preferably, a plugging portion is arranged at the bottom end of the liquid inlet pipe body, and the outer diameter dimension of the plugging portion is matched with the inner diameter dimension of the second liquid inlet pipe fitting.

[0017] Preferably, the lower plug-in pipe fitting includes a second outer sleeve rod rotatably inserted through an arc-shaped sealing plate by means of a bearing. A second inner sleeve rod is fixedly arranged inside the second outer sleeve rod. A self-sealing female joint is fixedly arranged at the top end of the second inner sleeve rod. The bottom end of the second inner sleeve rod is fixedly connected through to an annular airbag. An annular limiting sealing platform is fixedly arranged inside the cavity of the second outer sleeve rod. A positioning pin is fixedly arranged on the top of the annular limiting sealing platform.

[0018] The size of the positioning pin matches the size of the positioning hole. The inner diameter size of the first inner sleeve rod matches the outer diameter size of the second inner sleeve rod. The outer diameter size of the first outer sleeve rod matches the inner diameter size of the second outer sleeve rod.

[0019] Preferably, the annular airbag includes an airbag body and an annular sheet arranged on the inner wall of the airbag body. Sealing flanges are symmetrically arranged at both ends of the airbag body. A sealing liquid injection groove is formed between the two groups of sealing flanges. An annular groove is arranged inside the sealing liquid injection groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The temporary fixing mechanism can temporarily install and fix the leak-proof device on the outer side of the rubber oil and gas pipeline. After fixing the leak-proof device on the outer side of the rubber oil and gas pipeline, the lifting type sealing mechanism can collect and store the leaked oil and gas. When the oil and gas in the lifting type sealing mechanism reaches a certain amount, the pressure in the lifting type sealing mechanism is equal to the pressure in the rubber oil and gas pipeline. At this time, the oil and gas in the rubber oil and gas pipeline will not continue to leak. It can not only simply block the pipeline to prevent the continuous leakage of oil and gas, but also avoid the subsequent expansion of the crack on the rubber oil and gas pipeline by the crack opening mechanism and the spraying of oil and gas when inserting the sheet-shaped sealing mechanism into the rubber oil and gas pipeline for permanent sealing of the rubber oil and gas pipeline, with high safety.

[0022] 2. After simply blocking the pipeline through the lifting type sealing mechanism, the crack opening mechanism can open the crack on the rubber oil and gas pipeline, which is convenient for inserting the sheet-shaped sealing mechanism into the rubber oil and gas pipeline from the crack for permanent sealing of the pipeline from the inside. After inserting the sheet-shaped sealing mechanism into the rubber oil and gas pipeline, the annular airbag on the sheet-shaped sealing mechanism is rotated by 90 degrees through the upper plug-in pipe fitting, and then the annular airbag on the sheet-shaped sealing mechanism is inflated by rotating the upper plug-in pipe fitting. After the annular airbag is inflated, it expands to perform a primary seal on the leakage point from the inside of the rubber oil and gas pipeline. The sealing can be completed without shutting down the machine, which is suitable for emergency leak repair. Moreover, compared with the traditional clamp leak repair, leak repair from the inside can adapt to irregular surfaces and will not cause poor sealing due to pipeline deformation or shape mismatch, and the leak repair effect is better.

[0023] 3. After the leakage point is initially sealed by the annular airbag on the sheet-shaped sealing mechanism, an annular filling groove will be formed between the annular airbag and the rubber oil and gas pipeline. At this time, connect the liquid outlet pipe on the upper pluggable pipe fitting to the negative pressure suction device. The liquid outlet pipe can suck out the petroleum in the filling groove through the liquid suction pipe fitting. After sucking out the petroleum in the filling groove, connect the first liquid inlet pipe fitting to the liquid outlet pipe on the flushing pipeline. Fill the filling groove with the cleaning liquid containing abrasive particles through the first liquid inlet pipe fitting. The cleaning liquid containing abrasive particles will finally be discharged from the liquid outlet pipe. By circulating the cleaning liquid containing abrasive particles into the filling groove in this way, the inner wall of the filling groove can be flushed and ground. This can not only remove the oil film on the inner wall of the filling groove, but also make the inner wall of the filling groove relatively rough, improve the bonding strength of the resin sealing liquid, and improve the sealing effect.

[0024] 4. After the flushing and grinding of the filling groove is completed, connect the liquid outlet pipe on the upper pluggable pipe fitting to the negative pressure suction device again. Through the liquid outlet pipe and the negative pressure suction device, all the remaining cleaning liquid in the filling groove can be sucked out. Then, fill the filling groove with the resin sealing liquid through the first liquid inlet pipe fitting and the second liquid inlet pipe fitting. After the resin sealing liquid solidifies, it can accurately cover the crack or corrosion area, forming a barrier that fits tightly with the inner wall of the pipeline, and can perform a secondary permanent seal on the leakage point. Moreover, the solidified resin can not only play a role in plugging leaks, but also reinforce the rubber oil and gas pipeline from the inside, extend its service life, and avoid secondary leakage caused by the deformation of the leakage point again. The plugging effect is good.

[0025] 5. The first liquid inlet pipe fitting and the upper pluggable pipe fitting are respectively connected to the second liquid inlet pipe fitting and the lower pluggable pipe fitting in a pluggable manner, which is convenient for disassembling and separating the sheet-shaped sealing mechanism after sealing. After disassembling and separating the sheet-shaped sealing mechanism, discharge the oil and gas in the lifting sealing mechanism through the oil drain port. Then, disassemble the temporary fixing mechanism and remove the emergency leak plugging device from the sealed pipeline, so that the emergency leak plugging device can be reused. After removing the emergency leak plugging device from the sealed pipeline, the sheet-shaped sealing mechanism can be bundled and reinforced from the outside through the connecting ears on the sheet-shaped sealing mechanism with straps, which can further improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is the overall structural schematic diagram of an emergency leak plugging device for an oil and gas pipeline according to the present invention;

[0028] Figure 2 is the longitudinal sectional view of an emergency leak plugging device for an oil and gas pipeline according to the present invention;

[0029] Figure 3 This is a transverse sectional view of an emergency leak plugging device for an oil and gas pipeline according to the present invention;

[0030] Figure 4 According to the present invention Figure 3 A schematic enlarged structure diagram at position A in;

[0031] Figure 5 This is a sectional structure diagram of the lifting sealing mechanism according to the present invention;

[0032] Figure 6 This is a connection structure diagram between the pluggable pipe fitting, the first liquid inlet pipe fitting and the sheet-shaped plugging mechanism according to the present invention;

[0033] Figure 7 According to the present invention Figure 6 A schematic enlarged structure diagram at position B in;

[0034] Figure 8 This is a connection structure diagram between the upper pluggable pipe fitting and the lower pluggable pipe fitting according to the present invention;

[0035] Figure 9 According to the present invention Figure 8 A schematic enlarged structure diagram at position C in.

[0036] In the figure: 1. Temporary fixing mechanism; 101. Lower clamping member; 102. Upper clamping member; 103. Fixing screw;

[0037] 2. Lifting sealing mechanism; 201. Connection seat; 202. Corrugated connection kit; 203. Sealing cylinder; 204. Connection plate; 205. First hydraulic telescopic rod; 206. Oil drain port; 207. Valve; 208. Intersection port; 209. Rubber sealing ring;

[0038] 3. Crack opening mechanism; 301. Second hydraulic telescopic rod; 302. Connecting piece; 303. Push-pull rod; 304. Installation plate member; 305. Crack opening plate;

[0039] 4. Lifting mechanism; 401. Extension platform; 402. Third hydraulic telescopic rod; 403. Lifting plate member;

[0040] 5. Upper pluggable pipe fitting; 501. First outer sleeve rod; 502. First inner sleeve rod; 503. Self-sealing male joint; 504. First pipe joint; 505. Liquid outlet pipe; 506. Second pipe joint; 507. Positioning jack;

[0041] 6. First liquid inlet pipe fitting; 601. Liquid inlet pipe body; 602. Third pipe joint; 603. Bending shielding part;

[0042] 7. Sheet plugging mechanism; 701. Arc plugging plate; 702. Connecting ear; 703. Lower plug-in pipe fitting; 7031. Second outer sleeve rod; 7032. Second inner sleeve rod; 7033. Self-sealing female joint; 7034. Annular limit sealing table; 7035. Positioning pin; 704. Second liquid inlet pipe fitting; 705. Annular airbag; 7051. Airbag body; 7052. Annular sheet; 7053. Plugging flange; 7054. Annular groove; 706. Liquid suction pipe fitting; 707. Liquid suction hole;

[0043] 8. Hydraulic sensor. Specific embodiments

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment, as Figures 1-9 shown, an emergency leak plugging device for oil and gas pipelines includes a temporary fixing mechanism 1. A lifting and sealing mechanism 2 is fixedly arranged on the top of the temporary fixing mechanism 1. A crack opening mechanism 3, a lifting mechanism 4 and a hydraulic sensor 8 are fixedly arranged on the lifting and sealing mechanism 2. An upper plug-in pipe fitting 5 and a first liquid inlet pipe fitting 6 are inserted through the lifting mechanism 4. A sheet plugging mechanism 7 is inserted at the bottom ends of the upper plug-in pipe fitting 5 and the first liquid inlet pipe fitting 6. After the plugging device is temporarily installed and fixed on the outer side of the rubber oil and gas pipeline through the temporary fixing mechanism 1, the leaked oil and gas can be collected and stored through the lifting and sealing mechanism 7. When the oil and gas in the lifting and sealing mechanism 7 reaches a certain amount, the pressure in the lifting and sealing mechanism 7 is balanced with the pressure in the rubber oil and gas pipeline. At this time, the oil and gas in the rubber oil and gas pipeline will not leak continuously. After simply plugging the pipeline through the lifting and sealing mechanism 2, control the lifting and sealing mechanism 2 to fold and contract to insert the crack opening plate 305 on the crack opening mechanism 3 into the crack, and then control the two groups of crack opening plates 305 to move away from each other through the second hydraulic telescopic rod 301 to open the crack on the rubber oil and gas pipeline. After opening the crack, control the sheet plugging mechanism 7 to move downward through the lifting mechanism, insert the sheet plugging mechanism 7 into the rubber oil and gas pipeline from the crack. After inserting the sheet plugging mechanism 7 into the rubber oil and gas pipeline, rotate the upper plug-in pipe fitting 5 to rotate the annular airbag 705 on the sheet plugging mechanism 7 by 90 degrees, and then inflate the annular airbag 705 on the sheet plugging mechanism 7 through the upper plug-in pipe fitting 5. After the annular airbag 705 is inflated, it expands to perform a primary plugging on the leakage point from the inside of the rubber oil and gas pipeline, and the plugging can be completed without stopping the machine;

[0046] The sheet-like plugging mechanism 7 includes an arc-shaped plugging plate 701 with a storage groove at the top and connecting ears 702 arranged at both ends of the arc-shaped plugging plate 701. A lower plug-in type pipe fitting 703 and a second liquid inlet pipe fitting 704 are inserted through the arc-shaped plugging plate 701. A ring-shaped airbag 705 and a liquid suction pipe fitting 706 are fixedly connected to the bottom end of the lower plug-in type pipe fitting 703, and the liquid suction pipe fitting 706 is sleeved outside the ring-shaped airbag 705. Liquid suction holes 707 are formed on the outer side of the bottom end of the liquid suction pipe fitting 706. By setting the ring-shaped airbag 705 as sheet-like, it is convenient to insert it into the oil and gas pipeline from the crack. After the leakage point is initially plugged by the ring-shaped airbag 705 on the sheet-like plugging mechanism 7, a ring-shaped filling groove will be formed between the ring-shaped airbag 705 and the rubber oil and gas pipeline. At this time, connect the liquid outlet pipe 505 on the upper plug-in type pipe fitting 5 to the negative pressure suction device. The liquid outlet pipe 505 can suck out the petroleum in the filling groove through the liquid suction pipe fitting 706. After sucking out the petroleum in the filling groove, connect the first liquid inlet pipe fitting 6 and the liquid outlet pipe 505 to the flushing pipeline, and fill the filling groove with a cleaning liquid containing abrasive particles through the first liquid inlet pipe fitting 6. The cleaning liquid containing abrasive particles will finally be discharged from the liquid outlet pipe 505 through the liquid suction pipe fitting 706. By circulating the cleaning liquid containing abrasive particles into the filling groove in this way, the inner wall of the filling groove can be flushed and ground. It can not only remove the oil film on the inner wall of the filling groove, but also make the inner wall of the filling groove relatively rough, which can improve the bonding strength of the resin plugging liquid. After flushing and grinding the filling groove, connect the liquid outlet pipe 505 on the upper plug-in type pipe fitting 5 to the negative pressure suction device again. Through the liquid outlet pipe 505 and the negative pressure suction device, all the remaining cleaning liquid in the filling groove can be sucked out. Then, fill the filling groove with resin plugging liquid through the first liquid inlet pipe fitting 6 and the second liquid inlet pipe fitting 704. After the resin plugging liquid solidifies, it can accurately cover the crack or corrosion area, forming a barrier that closely fits the inner wall of the pipeline, and can perform a secondary permanent plugging on the leakage point. The first liquid inlet pipe fitting 6 and the upper plug-in type pipe fitting 5 are respectively connected to the second liquid inlet pipe fitting 704 and the lower plug-in type pipe fitting 703 in a pluggable manner, which is convenient for disassembling and separating the sheet-like plugging mechanism 7 after plugging. After disassembling and separating the sheet-like plugging mechanism 7, discharge the oil and gas in the lifting sealing mechanism 2 through the oil drain port 206, then disassemble the temporary fixing mechanism 1 and remove the emergency plugging device from the plugged pipeline. Then, the sheet-like plugging mechanism 7 can be bundled and reinforced from the outside through the connecting ears 702 on the sheet-like plugging mechanism 7 with straps, which can further improve the plugging effect.

[0047] As a further embodiment of the above invention: The temporary fixing mechanism 1 includes a lower clamping member 101 and an upper clamping member 102. A fixing screw 103 is arranged between the lower clamping member 101 and the upper clamping member 102. During use, clamp the lower clamping member 101 and the upper clamping member 102 outside the pipeline, and then fix them through the fixing screw 103 to complete the installation.

[0048] As a further embodiment of the above invention: The lifting and sealing mechanism 2 includes a connecting seat 201 fixedly arranged at the top of the upper clamping member 102. The top end of the connecting seat 201 is fixedly connected with a corrugated connecting kit 202. The top end of the corrugated connecting kit 202 is provided with a sealing cylinder body 203. The outer side of the top end of the sealing cylinder body 203 is fixedly provided with a connecting plate 204. A first hydraulic telescopic rod 205 is fixedly arranged between the connecting plate 204 and the connecting seat 201. Oil discharge ports 206 are symmetrically arranged on the outer side of the connecting seat 201. Valves 207 are arranged on the oil discharge ports 206. By setting the corrugated connecting kit 202, the sealing cylinder body 203 can be lifted and lowered under the drive of the first hydraulic telescopic rod 205 while ensuring sealing. When the sealing cylinder body 203 is lifted and lowered, it can drive the crack opening mechanism 3 to lift and lower, facilitating the insertion of the crack opening plate 305 into the pipeline crack for the opening operation.

[0049] The top end of the sealing cylinder body 203 is provided with an insertion opening 208. A rubber sealing ring 209 is fixedly arranged inside the insertion opening 208. By setting the rubber sealing ring 209, the sealing performance between the upper plug-in pipe fitting 5, the first liquid inlet pipe fitting 6 and the insertion opening 208 can be improved, and oil and gas leakage from the insertion opening 208 can be avoided when the upper plug-in pipe fitting 5 and the first liquid inlet pipe fitting 6 are lifted and lowered.

[0050] As a further embodiment of the above invention: The crack opening mechanism 3 includes a second hydraulic telescopic rod 301 fixedly arranged on the outer side of the lifting and sealing mechanism 2. One end of the second hydraulic telescopic rod 301 is fixedly provided with a connecting member 302. One side of the connecting member 302 is fixedly connected with a push-pull rod 303. One end of the push-pull rod 303 is fixedly connected with a mounting plate member 304. The bottom of the mounting plate member 304 is provided with a crack opening plate 305 with a piercing tip. Control the lifting and sealing mechanism 2 to fold and contract to insert the crack opening plate 305 on the crack opening mechanism 3 into the crack, and then control the two groups of crack opening plates 305 to move away from each other through the second hydraulic telescopic rod 301 to open the crack on the rubber oil and gas pipeline. After the crack is opened, control the sheet-shaped plugging mechanism 7 to move down through the lifting mechanism, and the sheet-shaped plugging mechanism 7 can be inserted into the rubber oil and gas pipeline from the crack.

[0051] The push-pull rod 303 is slidably inserted through both sides of the sealing cylinder body 203, and a sealing ring is arranged at the connection between the sealing cylinder body 203 and the push-pull rod 303. The sealing ring can improve the sealing performance between the push-pull rod 303 and the sealing cylinder body 203.

[0052] As a further embodiment of the above invention: The lifting mechanism 4 includes an extension platform 401 fixedly arranged outside the lifting and sealing mechanism 2. A third hydraulic telescopic rod 402 is fixedly arranged on the extension platform 401. The top end of the third hydraulic telescopic rod 402 is fixedly provided with a lifting plate member 403. When the lifting plate member 403 is driven to lift by the third hydraulic telescopic rod 402 on the lifting mechanism 4, the lifting plate member 403 can drive the upper plug-in pipe fitting 5 and the first liquid inlet pipe fitting 6 to lift, facilitating the insertion of the sheet-shaped plugging mechanism 7 into the pipeline from the pipeline crack.

[0053] As a further embodiment of the above invention: The upper plug-in pipe fitting 5 includes a first outer sleeve rod 501 rotatably arranged on the lifting plate member 403 through a bearing. A first inner sleeve rod 502 is fixedly arranged inside the first outer sleeve rod 501. A self-sealing male joint 503 is fixedly arranged inside the bottom end of the first inner sleeve rod 502. The top end of the first inner sleeve rod 502 penetrates through the first outer sleeve rod 501 and is connected with a first pipeline joint 504. A liquid outlet channel is formed between the first outer sleeve rod 501 and the first inner sleeve rod 502. And a liquid outlet pipe 505 is fixedly arranged on the outer side of the first outer sleeve rod 501. One end of the liquid outlet pipe 505 is provided with a second pipeline joint 506. A positioning jack 507 is opened at the bottom end of the first outer sleeve rod 501. After the upper plug-in pipe fitting 5 and the lower plug-in pipe fitting 703 are spliced and assembled, the self-sealing male joint 503 and the self-sealing female joint 7033 on the lower plug-in pipe fitting 703 are also connected synchronously. At this time, the first inner sleeve rod 502 and the second inner sleeve rod 7032 are connected through. Through the first inner sleeve rod 502 and the second inner sleeve rod 7032, air can be inflated into the annular airbag 705. On the contrary, after the sheet-shaped plugging mechanism 7 is disassembled and disconnected, the self-sealing female joint 7033 automatically plugs, which can prevent the gas in the annular airbag 705 from leaking. After the first outer sleeve rod 501 and the second outer sleeve rod 7031 are spliced, the liquid outlet channel formed between the first outer sleeve rod 501 and the first inner sleeve rod 502 is connected through with the liquid outlet channel formed between the second outer sleeve rod 7031 and the second inner sleeve rod 7032. The liquid outlet pipe 505 can suck out the residual liquid in the filling groove formed between the annular airbag 705 and the rubber oil and gas pipeline through the connected channel.

[0054] As a further embodiment of the above invention: The first liquid inlet pipe fitting 6 includes a liquid inlet pipe body 601 fixedly inserted through the lifting plate member 403. A third pipeline joint 602 is fixedly arranged at the top end of the liquid inlet pipe body 601. A bent shielding part 603 is arranged on the liquid inlet pipe body 601. By arranging the bent shielding part 603, the bent shielding part 603 can limit and block the liquid outlet pipe 505, so that the upper plug-in pipe fitting 5 can only drive the annular airbag 705 to rotate 90 degrees, so that the rotated annular airbag 705 is just coaxially aligned with the oil and gas pipeline, facilitating subsequent plugging operations.

[0055] As a further embodiment of the above invention: The bottom end of the liquid inlet pipe body 601 is provided with a plug-in part, and the outer diameter dimension of the plug-in part matches the inner diameter dimension of the second liquid inlet pipe fitting 704, which is convenient for splicing and assembling between the first liquid inlet pipe fitting 6 and the second liquid inlet pipe fitting 704.

[0056] As a further embodiment of the above invention: The lower plug-in pipe fitting 703 includes a second outer sleeve rod 7031 rotatably inserted through the arc-shaped sealing plate 701 via a bearing. A second inner sleeve rod 7032 is fixedly arranged inside the second outer sleeve rod 7031. A self-sealing female joint 7033 is fixedly arranged at the top end of the second inner sleeve rod 7032. The bottom end of the second inner sleeve rod 7032 is fixedly connected through and to an annular airbag 705. An annular limit sealing platform 7034 is fixedly arranged inside the cavity of the second outer sleeve rod 7031. A positioning pin 7035 is fixedly arranged at the top of the annular limit sealing platform 7034. An elastic protrusion is arranged outside the positioning pin 7035 and can cooperate with the positioning socket 507 to play a role in plugging and fixing. By providing the annular limit sealing platform 7034, the annular limit sealing platform 7034 can not only block the upper plug-in pipe fitting 5, but also, after blocking the plug-in pipe fitting 5, the bottom end of the first outer sleeve rod 501 on the plug-in pipe fitting 5 contacts the annular limit sealing platform 7034, which can play a certain sealing role. Specifically, a sealing gasket can be installed between the first outer sleeve rod 501 and the annular limit sealing platform 7034 during implementation;

[0057] The size of the positioning pin 7035 matches the size of the positioning socket 507. The inner diameter dimension of the first inner sleeve rod 502 matches the outer diameter dimension of the second inner sleeve rod 7032. The outer diameter dimension of the first outer sleeve rod 501 matches the inner diameter dimension of the second outer sleeve rod 7031.

[0058] As a further embodiment of the above invention: The annular airbag 705 includes an airbag body 7051 and an annular sheet 7052 arranged on the inner wall of the airbag body 7051. Sealing flanges 7053 are symmetrically arranged at both ends of the airbag body 7051. A sealing liquid injection groove is formed between the two groups of sealing flanges 7053. An annular groove 7054 is arranged inside the sealing liquid injection groove. The sealing liquid injection groove and the oil and gas pipeline can form a filling groove in combination. By providing the annular groove 7054, the surface of the solidified resin has annular reinforcing ribs, which can further improve the reinforcement effect. By providing the annular sheet 7052, the annular sheet 7052 has a certain structural strength and can support the airbag body 7051, which is convenient for inserting the annular airbag 705 into the pipeline crack.

[0059] During specific implementation: After temporarily installing and fixing the leak plugging device on the outer side of the rubber oil and gas pipeline through the temporary fixing mechanism 1, the lifting and sealing mechanism 7 can collect and store the leaked oil and gas. When the amount of oil and gas in the lifting and sealing mechanism 7 reaches a certain level, the pressure inside the lifting and sealing mechanism 7 is balanced with the pressure inside the rubber oil and gas pipeline. At this time, the oil and gas inside the rubber oil and gas pipeline will no longer leak. After simply plugging the pipeline through the lifting and sealing mechanism 2, control the lifting and sealing mechanism 2 to fold and contract to insert the crack opening plate 305 on the crack opening mechanism 3 into the crack. Then, control the two groups of crack opening plates 305 to move away from each other through the second hydraulic telescopic rod 301 to open the crack on the rubber oil and gas pipeline. After opening the crack, control the sheet-shaped plugging mechanism 7 to move down through the lifting mechanism, insert the sheet-shaped plugging mechanism 7 into the rubber oil and gas pipeline from the crack. After inserting the sheet-shaped plugging mechanism 7 into the rubber oil and gas pipeline, rotate the upper plug-and-play pipe fitting 5 to rotate the annular airbag 705 on the sheet-shaped plugging mechanism 7 by 90 degrees, and then inflate the annular airbag 705 on the sheet-shaped plugging mechanism 7 through the upper plug-and-play pipe fitting 5. After the annular airbag 705 is inflated and expanded, it can perform a primary plugging on the leakage point from the inside of the rubber oil and gas pipeline, and the plugging can be completed without shutting down the machine;

[0060] After the annular airbag 705 on the sheet-shaped plugging mechanism 7 has completed the primary plugging of the leakage point, an annular filling groove will be formed between the annular airbag 705 and the rubber oil and gas pipeline. At this time, connect the liquid outlet pipe 505 on the upper plug-and-play pipe fitting 5 to the negative pressure suction device. The liquid outlet pipe 505 can suck out the petroleum in the filling groove through the liquid suction pipe fitting 706. After sucking out the petroleum in the filling groove, connect the first liquid inlet pipe fitting 6 to the liquid outlet pipe 505 to the flushing pipeline, and fill the filling groove with the cleaning liquid with abrasive particles through the first liquid inlet pipe fitting 6. The cleaning liquid with abrasive particles will finally be discharged from the liquid outlet pipe 505 through the liquid suction pipe fitting 706. By circulating the cleaning liquid with abrasive particles into the filling groove in this way, the inner wall of the filling groove can be flushed and ground. It can not only remove the oil film on the inner wall of the filling groove, but also make the inner wall of the filling groove relatively rough, which can improve the bonding strength of the resin plugging liquid. After flushing and grinding the filling groove, connect the liquid outlet pipe 505 on the upper plug-and-play pipe fitting 5 to the negative pressure suction device again. Through the liquid outlet pipe 505 and the negative pressure suction device, all the remaining cleaning liquid in the filling groove can be sucked out. Then, fill the filling groove with the resin plugging liquid through the first liquid inlet pipe fitting 6 and the second liquid inlet pipe fitting 704. After the resin plugging liquid solidifies, it can accurately cover the crack or corrosion area, forming a barrier that fits tightly with the inner wall of the pipeline, and can perform a secondary permanent plugging on the leakage point;

[0061] After the secondary permanent plugging of the leakage point is completed, the sheet plugging mechanism 7 is disassembled and separated. Then, the oil and gas in the lifting sealing mechanism 2 are discharged through the oil drain port 206. Then, the temporary fixing mechanism 1 is disassembled and the emergency leak plugging device is removed from the plugged pipeline. Then, the sheet plugging mechanism 7 is bundled and reinforced from the outside by using the connecting ear 702 on the sheet plugging mechanism 7 with a strap, which can further improve the plugging effect.

[0062] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An emergency leakage plugging device for oil and gas pipelines, comprising a temporary fixing mechanism (1), characterized in that: At the top of the temporary fixing mechanism (1), a lifting and sealing mechanism (2) is fixedly arranged. On the lifting and sealing mechanism (2), a crack opening mechanism (3), a lifting mechanism (4) and a hydraulic sensor (8) are fixedly arranged. The upper plug-in pipe fitting (5) and the first liquid inlet pipe fitting (6) are inserted through the lifting mechanism (4). The bottom ends of the upper plug-in pipe fitting (5) and the first liquid inlet pipe fitting (6) are inserted with a sheet-shaped plugging mechanism (7). The sheet-shaped plugging mechanism (7) includes an arc-shaped plugging plate (701) with a storage groove at the top and connecting ears (702) arranged at both ends of the arc-shaped plugging plate (701). A lower plug-in pipe fitting (703) and a second liquid inlet pipe fitting (704) are inserted through the arc-shaped plugging plate (701). The bottom end of the lower plug-in pipe fitting (703) is fixedly connected with an annular airbag (705) and a liquid suction pipe fitting (706). The liquid suction pipe fitting (706) is sleeved outside the annular airbag (705). Liquid suction holes (707) are formed on the outer side of the bottom end of the liquid suction pipe fitting (706).

2. The emergency leak plugging device for oil and gas pipelines according to claim 1, wherein: The temporary fixing mechanism (1) includes a lower clamping member (101) and an upper clamping member (102). A fixing screw (103) is arranged between the lower clamping member (101) and the upper clamping member (102).

3. The emergency leak plugging device for oil and gas pipelines according to claim 2, characterized in that: The lifting and sealing mechanism (2) includes a connecting seat (201) fixedly arranged at the top of the upper clamping member (102). The top end of the connecting seat (201) is fixedly connected with a corrugated connecting kit (202). A sealing cylinder body (203) is arranged at the top end of the corrugated connecting kit (202). A connecting plate (204) is fixedly arranged on the outer side of the top end of the sealing cylinder body (203). A first hydraulic expansion rod (205) is fixedly arranged between the connecting plate (204) and the connecting seat (201). Oil discharge ports (206) are symmetrically arranged on the outer side of the connecting seat (201). Valves (207) are arranged on the oil discharge ports (206). An insertion opening (208) is arranged at the top end of the sealing cylinder body (203). A rubber sealing ring (209) is fixedly arranged inside the insertion opening (208).

4. An emergency leak plugging device for oil and gas pipelines according to claim 3, characterized in that: The crack opening mechanism (3) includes a second hydraulic expansion rod (301) fixedly arranged on the outer side of the lifting and sealing mechanism (2). One end of the second hydraulic expansion rod (301) is fixedly provided with a connecting member (302). A push-pull rod (303) is fixedly connected to one side of the connecting member (302). One end of the push-pull rod (303) is fixedly connected with a mounting plate member (304). A crack opening plate (305) with a puncture tip is arranged at the bottom of the mounting plate member (304). The push-pull rod (303) is slidably inserted through both sides of the sealing cylinder body (203). A sealing ring is arranged at the connection between the sealing cylinder body (203) and the push-pull rod (303).

5. The emergency leak plugging device for oil and gas pipelines according to claim 1, characterized in that: The lifting mechanism (4) includes an extension platform (401) fixedly arranged on the outer side of the lifting and sealing mechanism (2). A third hydraulic expansion rod (402) is fixedly arranged on the extension platform (401). The top end of the third hydraulic expansion rod (402) is fixedly provided with a lifting plate member (403).

6. The emergency leak plugging device for oil and gas pipelines according to claim 5, characterized in that: The upper plug-in pipe fitting (5) includes a first outer sleeve rod (501) rotatably arranged on the lifting plate member (403) through a bearing. A first inner sleeve rod (502) is fixedly arranged inside the first outer sleeve rod (501). A self-sealing male joint (503) is fixedly arranged inside the bottom end of the first inner sleeve rod (502). The top end of the first inner sleeve rod (502) penetrates through the first outer sleeve rod (501) and is connected with a first pipe joint (504). A liquid outlet channel is formed between the first outer sleeve rod (501) and the first inner sleeve rod (502). A liquid outlet pipe (505) is fixedly arranged on the outer side of the first outer sleeve rod (501). A second pipe joint (506) is arranged at one end of the liquid outlet pipe (505). A positioning jack (507) is formed at the bottom end of the first outer sleeve rod (501).

7. An emergency leakage plugging device for oil and gas pipelines according to claim 6, characterized in that: The first liquid inlet pipe fitting (6) includes a liquid inlet pipe body (601) fixedly inserted through the lifting plate member (403). A third pipe joint (602) is fixedly arranged at the top end of the liquid inlet pipe body (601). A bent shielding portion (603) is arranged on the liquid inlet pipe body (601).

8. An emergency leak plugging device for oil and gas pipelines according to claim 7, characterized in that: A plug-in portion is arranged at the bottom end of the liquid inlet pipe body (601), and the outer diameter dimension of the plug-in portion matches the inner diameter dimension of the second liquid inlet pipe fitting (704).

9. An emergency leak plugging device for oil and gas pipelines according to claim 6, characterized in that: The lower plug-in pipe fitting (703) includes a second outer sleeve rod (7031) rotatably inserted through the arc-shaped sealing plate (701) through a bearing. A second inner sleeve rod (7032) is fixedly arranged inside the second outer sleeve rod (7031). A self-sealing female joint (7033) is fixedly arranged at the top end of the second inner sleeve rod (7032). The bottom end of the second inner sleeve rod (7032) is fixedly connected with an annular airbag (705) in a through manner. An annular limiting and sealing table (7034) is fixedly arranged in the inner cavity of the second outer sleeve rod (7031). A positioning pin (7035) is fixedly arranged at the top of the annular limiting and sealing table (7034). The size of the positioning pin (7035) matches the size of the positioning jack (507). The inner diameter dimension of the first inner sleeve rod (502) matches the outer diameter dimension of the second inner sleeve rod (7032). The outer diameter dimension of the first outer sleeve rod (501) matches the inner diameter dimension of the second outer sleeve rod (7031).

10. An emergency leak plugging device for oil and gas pipelines according to claim 9, characterized in that: The annular airbag (705) includes an airbag body (7051) and an annular sheet (7052) arranged on the inner wall of the airbag body (7051). Sealing flanges (7053) are symmetrically arranged at both ends of the airbag body (7051). A sealing liquid injection groove is formed between the two groups of sealing flanges (7053). An annular groove (7054) is arranged inside the sealing liquid injection groove.

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