Equipment and method for rapid pressure plugging of natural gas pipelines

Abstract

The present invention discloses a natural gas pipeline rapid pressure plugging device, including a power output assembly, the power output assembly is connected to a cutting assembly, the cutting assembly is connected to a connecting assembly, and the connecting assembly is connected to a plugging assembly. The present invention also discloses a natural gas pipeline rapid pressure plugging method, including the following steps: S1, start the motor and the annular electromagnet, so that the rubber tube is attached to the inner wall of the pipeline, and the motor and the annular electromagnet are turned off. S2, start the electric push rod 1, the motor and the electric push rod 2, so that the saw blade rotates while revolving around the gear ring, so that the saw blade cuts the casing, and the electric push rod 1, the motor and the electric push rod 2 are turned off; S3, after the cutting is completed, start the electric push rod 2, and use the plugging assembly for plugging. The natural gas pipeline rapid pressure plugging device and method disclosed by the present invention solves the problem that the existing plugging technology is prone to gas leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of natural gas exploitation, and in particular relates to a natural gas pipeline rapid pressure plugging device, and also relates to a natural gas pipeline rapid pressure plugging method. Background Art

[0002] Existing natural gas extraction mainly transports natural gas by placing multiple layers of casing in the underground layer. During the natural gas well extraction process, if it is found that the geological conditions do not meet expectations, the extraction is difficult, and the economic benefits are poor, it is necessary to seal the well and re-plan the extraction plan, or the extraction work has been completed. In order to prevent gas leakage and waste of resources in the well, the natural gas well needs to be sealed.

[0003] At present, when plugging a natural gas well, the natural gas pipeline is first plugged, and then the casing is cut and removed to prevent the presence of natural gas in the natural gas well during cutting, and to avoid sparks generated during cutting causing danger. The Chinese invention patent with a publication date of March 24, 2023 and a publication number of CN113464761B: Quick Cutting and Blocking Tooling discloses: A basic structure of an umbrella is formed by using a plugging piece, a telescopic bracket, and a drive shaft. When the plugging piece is in a retracted state, the plugging piece and the telescopic bracket extend into the pipeline, and the drive shaft drives the telescopic bracket to open the plugging piece. The opened plugging piece blocks the pipeline. However, the plugging piece is an elastic part, and it only relies on the end of the telescopic bracket to squeeze the edge of part of the plugging piece to achieve the opening of the plugging piece to block the pipeline. When the air pressure in the pipeline is high, the edge of the plugging piece that is not squeezed by the telescopic bracket is easily pushed open by the air pressure, causing gas leakage. Summary of the invention

[0004] The purpose of the present invention is to provide a natural gas pipeline rapid pressure plugging device, which solves the problem that the existing plugging technology is prone to cause gas leakage.

[0005] Another object of the present invention is to provide a method for rapid pressure plugging of a natural gas pipeline.

[0006] The technical solution adopted by the present invention is a natural gas pipeline rapid pressure plugging device, which includes a power output component, the power output component is connected to a cutting component, the cutting component is connected to a connecting component, and the connecting component is connected to a plugging component.

[0007] The present invention is also characterized in that: The power output assembly includes a U-shaped plate, a motor is fixedly connected to one side of the U-shaped plate, a bevel gear 1 is fixedly connected to the output shaft of the motor, a central shaft bearing of the bevel gear 1 is connected to the U-shaped plate, the bevel gear 1 is meshingly connected to the bevel gear 2, the central shaft bearing of the bevel gear 2 is connected to the cylinder cover, the lower end of the U-shaped plate is fixedly connected to the upper side of the cylinder cover, and a square through groove 1 is provided in the middle of the bevel gear 2; an electric push rod 1 is fixedly connected to the upper end of the inner side of the U-shaped plate, the telescopic rod bearing of the electric push rod 1 is connected to a square rod shaft 1, the square rod shaft 1 is slidably connected to the square through groove 1, the bevel gear 2 drives the square rod shaft 1 to rotate through the square through groove 1, a round rod is fixedly connected to the lower end of the square rod shaft, the round rod passes through the square through groove 2, the lower end of the round rod is fixedly connected to the square rod shaft 2, the square rod shaft 2 is inserted into the blocking assembly, and a lifting ring is fixedly connected to the upper end of the U-shaped plate.

[0008] The cutting assembly includes a cylinder cover, a turntable is connected to a bearing on the inner side of the cylinder cover, two square through grooves are provided in the middle of the turntable, a group of vertical rods are fixedly connected to the lower side of the turntable, a ring-shaped disk is fixedly connected to the lower end of a group of vertical rods, a cylinder is connected to a bearing in the middle of the ring-shaped disk, a group of arc-shaped connecting plates are hinged on the upper part of the cylinder, and the other end of each arc-shaped connecting plate is hinged to a corresponding swing plate, and each swing plate center is connected to a pulley one with a bearing, and the lower end of the central axis of a group of pulleys one is respectively connected to the ring-shaped disk with a bearing, and pulley one is connected to pulley two through a belt, and the central axis bearing of pulley two is connected to the outer end of the swing plate, and a saw blade is fixedly connected to the center of the upper side of pulley two, and a group of gears are connected to the turntable bearing, and the lower end of the central axis of the gear is fixedly connected to the center of the corresponding pulley one, and the gear is meshingly connected with a gear ring, and the gear ring is fixed to the center of the upper end of the inner side of the cylinder cover.

[0009] An electric push rod 2 is hinged on the lower side of the cylinder through a pin shaft, and the shell end of the electric push rod 2 is hinged to the lower side of the annular disk through a pin shaft. A battery is fixedly installed on the lower side of the annular disk, and the battery is electrically connected to the electric push rod 2. The battery has a built-in remote control signal receiving module and a control module.

[0010] The connecting component comprises a square plate, which is fixed to the lower side of the annular disk. An annular electromagnet is fixed to the lower end of the square plate. An iron ring is arranged inside the annular electromagnet, and the blocking component is fixed inside the iron ring.

[0011] The sealing component comprises a disc one, an iron ring is fixedly connected to the upper center of the disc one, a screw rod is connected to the bearing in the middle of the disc one, a square tube is fixedly connected to the upper end of the screw rod, a polygonal block is threadedly connected to the screw rod, and a polygonal column is connected to the bearing at the lower end of the screw rod. A group of connecting columns is fixedly connected to the upper part of the polygonal column, and the upper end of a group of connecting columns is fixedly connected to the lower side of the disc. The polygonal block is arranged on the inner side of a group of connecting columns, and the upper and lower ends of each side surface of the polygonal column are respectively hinged with a connecting plate one, and the two connecting plates one on the same side are arranged parallel to each other, and the ends of the two connecting plates one on the same side are respectively hinged with an arc support plate, each arc support plate has a groove at one end, and each arc support plate is fixedly connected to a convex plate at the other end, and a connecting plate two is respectively hinged in the middle of a group of connecting plates one at the upper part, and the upper end of each connecting plate two is hinged to the corresponding side of the polygonal block, and a disc two is fixedly connected to the lower end of the polygonal column, and a rubber tube is fixedly connected to the edge of the disc two, and the upper edge of the rubber tube is fixedly connected to the edge of the disc one, and a group of arc support plates are arranged inside the rubber tube.

[0012] Another technical solution adopted by the present invention is a method for rapid pressure plugging of a natural gas pipeline, comprising the following steps: S1, start the motor and the annular electromagnet, make the rubber tube fit on the inner wall of the pipe, and turn off the motor and the annular electromagnet; S2, start the electric push rod 1, the motor and the electric push rod 2, so that the saw blade revolves around the gear ring and rotates on its own, so that the saw blade cuts the casing, and turn off the electric push rod 1, the motor and the electric push rod 2; S3. After the cutting is completed, start the electric push rod 2 and use the blocking component to block.

[0013] Another technical solution of the present invention is also characterized in that: The specific process of S1 is: use the existing winch's wire rope end to connect the lifting ring, put the equipment and control line into the natural gas well, use the winch to lower the equipment to the required depth, and then start the motor and the annular electromagnet. The motor drives the bevel gear 1 to rotate, and the bevel gear 1 drives the lead screw to rotate through the bevel gear 2, the square rod shaft 1, the round rod, the square rod shaft 2 and the square tube. The lead screw drives the polygonal block to move downward, and the polygonal block drives the corresponding connecting plate 1 to swing parallel to each other through a group of connecting plates 2, so that a group of arc support plates, grooves and convex plates swing downward and outward, and the convex plates gradually move out of the corresponding grooves. A group of arc support plates and convex plates push the rubber tube to increase the diameter of the rubber tube and fit the inner wall of the pipeline, and then turn off the motor and the annular electromagnet.

[0014] The specific process of S2 is as follows: start the electric push rod 1, the telescopic rod of the electric push rod 1 retracts and drives the square rod shaft 1, the round rod and the square rod shaft 2 to move upward, so that the square rod shaft 2 is separated from the square cylinder, and the square rod shaft 2 is inserted into the square through slot 2; then start the motor to drive the bevel gear 1 to rotate, the bevel gear 1 drives the square rod shaft 2 to rotate through the bevel gear 2, the square rod shaft 1 and the round rod, the square rod shaft 2 drives the turntable to rotate through the square through slot 2, the turntable drives the gear, the vertical rod, the annular disk and the saw blade to rotate, and finally the saw blade rotates while revolving around the gear ring; at the same time, start the telescopic rod of the electric push rod 2 to slowly extend and drive the cylinder to rotate, the cylinder drives the corresponding pulley 1, the belt, the pulley 2 and the saw blade to swing through the arc connecting plate and the swing plate, so that the diameter of the orbital motion trajectory of the rotating saw blade gradually increases, and when the saw blade contacts the casing, the saw blade cuts the casing, and closes the electric push rod 1, the motor and the electric push rod 2.

[0015] The specific process of S3 is as follows: after the casing cutting is completed, the telescopic rod of the second electric push rod is controlled to retract, so that a group of saw blades gather on the upper side of the annular disk, and then the equipment is lifted upward by the winch, the annular electromagnet and the iron ring are disengaged, the sealing assembly is left at the sealing position, the power output assembly and the cutting assembly are lifted out, and then the existing hydraulic pipe pulling machine is used to pull out the disconnected casing.

[0016] The beneficial effects of the present invention are: The invention provides a natural gas pipeline rapid pressure plugging device and method, wherein the arc-shaped support plate and the convex plate form a ring and support the rubber tube, the outer side of the rubber tube is closely attached to the inner wall of the pipeline, and the rubber tube and the disc block the pipeline. In the vertical direction, the inner wall of the rubber cylinder is squeezed by the arc-shaped support plate or the convex plate, so that there is no gap between the outer side of the rubber cylinder and the inner wall of the pipeline in the vertical direction, and the sealing effect is good, which can effectively prevent the gas in the well from leaking upward, avoid waste of resources, and avoid explosion during later cutting; the motor is started to realize that the square rod shaft 2 drives the turntable to rotate through the square through slot 2, and the turntable drives the gear, vertical rod, annular disk and saw blade to rotate, and finally the saw blade rotates while revolving around the gear ring; at the same time, the telescopic rod of the electric push rod 2 is remotely started to slowly extend to drive the cylinder to rotate, and the cylinder drives the arc-shaped connecting plate to swing slowly, and the arc-shaped connecting plate drives the swing plate to swing slowly, and the swing plate drives the corresponding pulley 1, belt, pulley 2 and saw blade to swing, so that the diameter of the orbital motion trajectory of the rotating saw blade gradually increases, and when the saw blade contacts the casing, the saw blade cuts the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a natural gas pipeline rapid pressure plugging device of the present invention; Figure 2 This is a schematic diagram of the connection structure of some parts of the cylinder cover after cutting. Figure 1 ; Figure 3This is a schematic diagram of the connection structure of some parts of the cylinder cover after cutting. Figure 2 ; Figure 4 It is a partial enlarged view of A of the present invention; Figure 5 This is a schematic diagram of the connection structure of some parts of the cylinder cover after cutting. Figure 3 ; Figure 6 is a schematic structural diagram of the plugging assembly of the present invention; Figure 7 It is a schematic diagram of the connection structure of some parts of the rubber tube after being cut.

[0018] In the figure, 1. power output assembly, 11. U-shaped plate, 12. electric push rod 1, 13. motor, 14. bevel gear 1, 15. bevel gear 2, 16. square rod shaft 1, 17. round rod, 18. square rod shaft 2, 19. square through slot 1; 2. cutting assembly, 21. cylinder cover, 22. gear ring, 23. gear, 24. turntable, 25. square through slot 2, 26. cylinder, 27. arc connecting plate, 28. swing plate, 29. annular disk, 210. belt, 211. pulley 2. 212. Saw blade, 213. Pulley 1, 214. Battery, 215. Vertical rod, 216. Electric push rod 2; 3. Sealing assembly, 31. Square tube, 32. Disc 1, 33. Screw rod, 34. Polygonal block, 35. Connecting plate 2, 36. Connecting plate 1, 37. Arc support plate, 38. Groove, 39. Convex plate, 310. Connecting column, 311. Disc 2, 312. Rubber tube; 4. Connecting assembly, 41. Square plate, 42. Ring electromagnet, 43. Lifting ring. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The natural gas pipeline rapid pressure plugging device provided by the present invention is as follows: Figure 1 As shown, it includes a power output assembly 1, the power output assembly 1 is connected to a cutting assembly 2, the cutting assembly 2 is connected to a connecting assembly 4, and the connecting assembly 4 is connected to a blocking assembly 3. Figure 2 As shown, the power output assembly 1 includes a U-shaped plate 11, a motor 13 is fixedly connected to one side of the U-shaped plate 11, an output shaft of the motor 13 is fixedly connected to a bevel gear 14, a central shaft bearing of the bevel gear 14 is connected to the U-shaped plate 11, the bevel gear 14 is meshedly connected to a bevel gear 2 15, a central shaft bearing of the bevel gear 2 15 is connected to a cylinder cover 21, and the lower end of the U-shaped plate 11 is fixedly connected to the upper side of the cylinder cover 21, as shown in FIG. Figure 3As shown, a square through slot 19 is provided in the middle of the bevel gear 15; an electric push rod 12 is fixedly connected to the upper inner end of the U-shaped plate 11, and the telescopic rod bearing of the electric push rod 12 is connected to a square rod shaft 16, and the square rod shaft 16 is slidably connected to the square through slot 19. The bevel gear 15 drives the square rod shaft 16 to rotate through the square through slot 19, and a round rod 17 is fixedly connected to the lower end of the square rod shaft 16, and the round rod 17 passes through the square through slot 25. The lower end of the round rod 17 is fixedly connected to the square rod shaft 218, and the square rod shaft 218 is inserted into the blocking component 3, and the upper end of the U-shaped plate 11 is fixedly connected to the lifting ring 5; the cutting component 2 includes a cylinder cover 21, and the inner bearing of the cylinder cover 21 is connected to a turntable 24, and the middle of the turntable 24 is provided with a square through slot 25, as shown in FIG. Figure 4 As shown, a group of vertical rods 215 are fixedly connected to the lower side of the rotating disk 24, and an annular disk 29 is fixedly connected to the lower end of the group of vertical rods 215. The middle part of the annular disk 29 is connected to the cylinder 26 by a bearing, and a group of arc connecting plates 27 are hinged on the upper part of the cylinder 26. The other end of each arc connecting plate 27 is respectively hinged to a corresponding swing plate 28. The center of each swing plate 28 is connected to a pulley 1 213 by a bearing. The lower end of the central axis of a group of pulleys 1 213 is respectively connected to the annular disk 29 by a bearing, and the pulley 1 213 is correspondingly connected to the pulley 2 211 through the belt 210. The central axis bearing of the second pulley 211 is connected to the outer end of the swing plate 28, the saw blade 212 is fixedly connected to the center of the upper side of the second pulley 211, and a group of gears 23 are connected to the bearing of the turntable 24. The lower end of the central axis of the gear 23 is fixedly connected to the center of the corresponding pulley 1 213. The gear 23 is meshedly connected with the ring gear 22, and the ring gear 22 is fixedly connected to the center of the upper end of the inner side of the cylinder cover 21; the lower side of the cylinder 26 is hinged with the second electric push rod 216 through the pin shaft, and the shell end of the second electric push rod 216 is hinged to the lower side of the annular disk 29 through the pin shaft, as shown in FIG. Figure 5 As shown, a battery 214 is fixedly installed on the lower side of the annular disk 29, and the battery 214 is electrically connected to the electric push rod 216. The battery 214 has a remote control signal receiving module and a control module built in. The connecting component 4 includes a square plate 41, which is fixedly connected to the lower side of the annular disk 29. The lower end of the square plate 41 is fixedly connected to an annular electromagnet 42, and an iron ring 43 is arranged inside the annular electromagnet 42. The blocking component 3 is fixedly connected to the iron ring 43. Figure 6 As shown, the plugging assembly 3 includes a disc 32, an iron ring 43 is fixedly connected to the center of the upper side of the disc 32, a screw rod 33 is connected to the bearing in the middle of the disc 32, a square tube 31 is fixedly connected to the upper end of the screw rod 33, and a polygonal block 34 is threadedly connected to the screw rod 33, as shown in FIG. Figure 7As shown, the lower end bearing of the screw rod 33 is connected to a polygonal column 313, and a group of connecting columns 310 are fixedly connected to the upper part of the polygonal column 313. The upper end of the group of connecting columns 310 is fixedly connected to the lower side of the disc 1 32. The polygonal block 34 is arranged on the inner side of the group of connecting columns 310. The upper and lower ends of each side of the polygonal column 313 are respectively hinged with a connecting plate 1 36. The two connecting plates 1 36 on the same side are arranged parallel to each other. The ends of the two connecting plates 1 36 on the same side are respectively hinged with arc support plates 37. Each arc support plate 37 is provided on the inner side of the polygonal column 313. A groove 38 is provided at one end of the support plate 37, and a convex plate 39 is fixedly connected to the other end of each arc-shaped support plate 37. A connecting plate 2 35 is hingedly connected in the middle of a group of connecting plates 1 36 at the upper part, and the upper end of each connecting plate 2 35 is hingedly connected to the corresponding side of the polygonal block 34. A disc 2 311 is fixedly connected to the lower end of the polygonal column 313, and a rubber tube 312 is fixedly connected to the edge of the disc 2 311. The upper edge of the rubber tube 312 is fixedly connected to the edge of the disc 1 32, and a group of arc-shaped support plates 37 are arranged inside the rubber tube 312.

[0021] The natural gas pipeline rapid pressure plugging device provided by the present invention has the following working principle: First, use the existing winch wire rope end to connect the lifting ring 5, put the device and the control line into the natural gas well, and use the winch to lower the device to the required depth, then start the motor 13 to drive the bevel gear 14 to rotate, the bevel gear 14 drives the bevel gear 2 15 to rotate, the bevel gear 2 15 drives the square rod shaft 1 16, the round rod 17 and the square rod shaft 2 18 to rotate synchronously, the square rod shaft 2 18 drives the square cylinder 31 to rotate, the square cylinder 31 drives the screw rod 33 to rotate, the screw rod 33 drives the polygonal block 34 to move downward, the polygonal block 34 drives a group of connecting plates 2 35 to swing, the connecting plate 2 35 drives the corresponding connecting plate 1 36 to swing, so that the two connecting plates 1 36 on the same side swing parallel to each other, so that a group of arc support plates 37, grooves 38 and convex plates 39 swing downward and outward, the convex plates 39 gradually move out of the corresponding grooves 38, a group of arc support plates 37 and convex plates 39 push the rubber tube 312, so that the diameter of the rubber tube 312 becomes larger and fits the inner wall of the pipeline, and the motor 13 is turned off. like Figure 3As shown, the arc support plate 37 and the convex plate 39 form a circular ring and open the rubber tube 312. The outer side of the rubber tube 312 is close to the inner wall of the pipe, and the rubber tube 312 and the disc 2 311 block the pipe. In the vertical direction, the inner wall of the rubber tube 312 is squeezed by the arc support plate 37 or the convex plate 39, so that there is no gap between the outer side of the rubber tube 312 and the inner wall of the pipe in the vertical direction. The sealing effect is good, which can well prevent the gas in the well from leaking upward, avoid waste of resources, and avoid explosion during later cutting; then close the annular electromagnet 42, which can rotate along the iron ring 43, which can increase the stability of the cutting assembly 2 when it rotates, start the electric push rod 12, and the telescopic rod of the electric push rod 12 retracts to drive the square rod shaft 16, the round rod 17 and the square rod shaft 2 18 to The square rod shaft 18 is moved upward, so that the square rod shaft 18 is separated from the square tube 31, and the square rod shaft 18 is inserted into the square through groove 25; then the motor 13 is started to drive the bevel gear 14 to rotate, and the bevel gear 14 drives the square rod shaft 16, the round rod 17 and the square rod shaft 18 to rotate synchronously through the bevel gear 15, and the square rod shaft 18 drives the turntable 24 to rotate through the square through groove 25, and the turntable 24 drives the gear 23, the vertical rod 215, the annular disk 29 and the saw blade 212 to rotate. When the gear 23 rotates around the gear ring 22, the gear 23 meshes with the gear ring 22 to rotate, so that the gear 23 rotates around the gear ring 22, so that the gear 23 rotates around the gear ring 22. When the ring 22 revolves, it rotates at the same time. The rotation of the gear 2 drives the pulley 1 213 to rotate. The pulley 1 213 drives the saw blade 212 to rotate through the belt 210 and the pulley 211, so that the saw blade 212 revolves around the ring gear 22 and rotates at the same time. At the same time, the telescopic rod of the electric push rod 216 is remotely started to slowly extend to drive the cylinder 26 to rotate. The cylinder 26 drives the arc connecting plate 27 to swing slowly. The arc connecting plate 27 drives the swing plate 28 to swing slowly. The swing plate 28 drives the corresponding pulley 1 213, the belt 210, the pulley 211 and the saw blade 212 to swing, so that the rotating saw blade 21 2, the diameter of the orbital motion trajectory gradually increases. When the saw blade 212 contacts the casing, the saw blade 212 cuts the casing. After the casing cutting is completed, the telescopic rod of the remote control start electric push rod 216 is retracted, so that the saw blade 212 swings toward the cylinder 26, so that a group of saw blades 212 gather on the upper side of the annular disk 29, and then the equipment is lifted upward by the winch, the annular electromagnet 42 and the iron ring 43 are disengaged, the blocking component 3 is left at the blocking position, the power output component 1 and the cutting component 2 are lifted out, and then the disconnected casing is pulled out using the existing hydraulic pipe pulling machine.

[0022] Example 1 The natural gas pipeline rapid pressure plugging device proposed in this embodiment is as follows: Figure 1 As shown, it includes a power output assembly 1, the power output assembly 1 is connected to a cutting assembly 2, the cutting assembly 2 is connected to a connecting assembly 4, and the connecting assembly 4 is connected to a blocking assembly 3.

[0023] Example 2 The natural gas pipeline rapid pressure plugging device proposed in this embodiment is as follows: Figure 1 As shown, it includes a power output assembly 1, the power output assembly 1 is connected to a cutting assembly 2, the cutting assembly 2 is connected to a connecting assembly 4, and the connecting assembly 4 is connected to a blocking assembly 3. Figure 2 As shown, the power output assembly 1 includes a U-shaped plate 11, a motor 13 is fixedly connected to one side of the U-shaped plate 11, an output shaft of the motor 13 is fixedly connected to a bevel gear 14, a central shaft bearing of the bevel gear 14 is connected to the U-shaped plate 11, the bevel gear 14 is meshedly connected to a bevel gear 2 15, a central shaft bearing of the bevel gear 2 15 is connected to a cylinder cover 21, and the lower end of the U-shaped plate 11 is fixedly connected to the upper side of the cylinder cover 21, as shown in FIG. Figure 3 As shown, a square through groove 19 is provided in the middle of the bevel gear 15; an electric push rod 12 is fixedly connected to the upper inner end of the U-shaped plate 11, and the telescopic rod bearing of the electric push rod 12 is connected to a square rod shaft 16, and the square rod shaft 16 is slidably connected to the square through groove 19. The bevel gear 15 drives the square rod shaft 16 to rotate through the square through groove 19, and the lower end of the square rod shaft 16 is fixedly connected to a round rod 17, and the round rod 17 passes through the square through groove 25, and the lower end of the round rod 17 is fixedly connected to a square rod shaft 2 18, and the square rod shaft 2 18 is inserted into the blocking component 3, and the upper end of the U-shaped plate 11 is fixedly connected to a lifting ring 5.

[0024] Example 3 The natural gas pipeline rapid pressure plugging device proposed in this embodiment is as follows: Figure 1 As shown, it includes a power output assembly 1, the power output assembly 1 is connected to a cutting assembly 2, the cutting assembly 2 is connected to a connecting assembly 4, and the connecting assembly 4 is connected to a blocking assembly 3. Figure 2 As shown, the power output assembly 1 includes a U-shaped plate 11, a motor 13 is fixedly connected to one side of the U-shaped plate 11, an output shaft of the motor 13 is fixedly connected to a bevel gear 14, a central shaft bearing of the bevel gear 14 is connected to the U-shaped plate 11, the bevel gear 14 is meshedly connected to a bevel gear 2 15, a central shaft bearing of the bevel gear 2 15 is connected to a cylinder cover 21, and the lower end of the U-shaped plate 11 is fixedly connected to the upper side of the cylinder cover 21, as shown in FIG. Figure 3 As shown, a square through slot 19 is provided in the middle of the bevel gear 15; an electric push rod 12 is fixedly connected to the upper inner end of the U-shaped plate 11, and the telescopic rod bearing of the electric push rod 12 is connected to a square rod shaft 16, and the square rod shaft 16 is slidably connected to the square through slot 19. The bevel gear 15 drives the square rod shaft 16 to rotate through the square through slot 19, and a round rod 17 is fixedly connected to the lower end of the square rod shaft 16, and the round rod 17 passes through the square through slot 25. The lower end of the round rod 17 is fixedly connected to the square rod shaft 218, and the square rod shaft 218 is inserted into the blocking component 3, and the upper end of the U-shaped plate 11 is fixedly connected to the lifting ring 5; the cutting component 2 includes a cylinder cover 21, and the inner bearing of the cylinder cover 21 is connected to a turntable 24, and the middle of the turntable 24 is provided with a square through slot 25, as shown in FIG. Figure 4As shown, a group of vertical rods 215 are fixedly connected to the lower side of the rotating disk 24, and an annular disk 29 is fixedly connected to the lower end of the group of vertical rods 215. The middle part of the annular disk 29 is connected to the cylinder 26 by a bearing, and a group of arc connecting plates 27 are hinged on the upper part of the cylinder 26. The other end of each arc connecting plate 27 is respectively hinged to a corresponding swing plate 28. The center of each swing plate 28 is connected to a pulley 1 213 by a bearing. The lower end of the central axis of a group of pulleys 1 213 is respectively connected to the annular disk 29 by a bearing, and the pulley 1 213 is correspondingly connected to the pulley 2 211 through the belt 210. The central axis bearing of the second pulley 211 is connected to the outer end of the swing plate 28, the saw blade 212 is fixedly connected to the center of the upper side of the second pulley 211, and a group of gears 23 are connected to the bearing of the turntable 24. The lower end of the central axis of the gear 23 is fixedly connected to the center of the corresponding pulley 1 213. The gear 23 is meshedly connected with the ring gear 22, and the ring gear 22 is fixedly connected to the center of the upper end of the inner side of the cylinder cover 21; the lower side of the cylinder 26 is hinged with the second electric push rod 216 through the pin shaft, and the shell end of the second electric push rod 216 is hinged to the lower side of the annular disk 29 through the pin shaft, as shown in FIG. Figure 5 As shown, a battery 214 is fixedly installed on the lower side of the annular disk 29, and the battery 214 is electrically connected to the electric push rod 216. The battery 214 has a remote control signal receiving module and a control module built in.

[0025] Example 4 The natural gas pipeline rapid pressure plugging device proposed in this embodiment is as follows: Figure 1 As shown, it includes a power output assembly 1, the power output assembly 1 is connected to a cutting assembly 2, the cutting assembly 2 is connected to a connecting assembly 4, and the connecting assembly 4 is connected to a blocking assembly 3. Figure 2 As shown, the power output assembly 1 includes a U-shaped plate 11, a motor 13 is fixedly connected to one side of the U-shaped plate 11, an output shaft of the motor 13 is fixedly connected to a bevel gear 14, a central shaft bearing of the bevel gear 14 is connected to the U-shaped plate 11, the bevel gear 14 is meshedly connected to a bevel gear 2 15, a central shaft bearing of the bevel gear 2 15 is connected to a cylinder cover 21, and the lower end of the U-shaped plate 11 is fixedly connected to the upper side of the cylinder cover 21, as shown in FIG. Figure 3 As shown, a square through slot 19 is provided in the middle of the bevel gear 15; an electric push rod 12 is fixedly connected to the upper inner end of the U-shaped plate 11, and the telescopic rod bearing of the electric push rod 12 is connected to a square rod shaft 16, and the square rod shaft 16 is slidably connected to the square through slot 19. The bevel gear 15 drives the square rod shaft 16 to rotate through the square through slot 19, and a round rod 17 is fixedly connected to the lower end of the square rod shaft 16, and the round rod 17 passes through the square through slot 25. The lower end of the round rod 17 is fixedly connected to the square rod shaft 218, and the square rod shaft 218 is inserted into the blocking component 3, and the upper end of the U-shaped plate 11 is fixedly connected to the lifting ring 5; the cutting component 2 includes a cylinder cover 21, and the inner bearing of the cylinder cover 21 is connected to a turntable 24, and the middle of the turntable 24 is provided with a square through slot 25, as shown in FIG. Figure 4As shown, a group of vertical rods 215 are fixedly connected to the lower side of the rotating disk 24, and an annular disk 29 is fixedly connected to the lower end of the group of vertical rods 215. The middle part of the annular disk 29 is connected to the cylinder 26 by a bearing, and a group of arc connecting plates 27 are hinged on the upper part of the cylinder 26. The other end of each arc connecting plate 27 is respectively hinged to a corresponding swing plate 28. The center of each swing plate 28 is connected to a pulley 1 213 by a bearing. The lower end of the central axis of a group of pulleys 1 213 is respectively connected to the annular disk 29 by a bearing, and the pulley 1 213 is correspondingly connected to the pulley 2 211 through the belt 210. The central axis bearing of the second pulley 211 is connected to the outer end of the swing plate 28, the saw blade 212 is fixedly connected to the center of the upper side of the second pulley 211, and a group of gears 23 are connected to the bearing of the turntable 24. The lower end of the central axis of the gear 23 is fixedly connected to the center of the corresponding pulley 1 213. The gear 23 is meshedly connected with the ring gear 22, and the ring gear 22 is fixedly connected to the center of the upper end of the inner side of the cylinder cover 21; the lower side of the cylinder 26 is hinged with the second electric push rod 216 through the pin shaft, and the shell end of the second electric push rod 216 is hinged to the lower side of the annular disk 29 through the pin shaft, as shown in FIG. Figure 5 As shown, a battery 214 is fixedly installed on the lower side of the annular disk 29, and the battery 214 is electrically connected to the electric push rod 216. The battery 214 has a remote control signal receiving module and a control module built in. The connecting component 4 includes a square plate 41, which is fixedly connected to the lower side of the annular disk 29. The lower end of the square plate 41 is fixedly connected to an annular electromagnet 42, and an iron ring 43 is arranged inside the annular electromagnet 42. The blocking component 3 is fixedly connected to the iron ring 43. Figure 6 As shown, the plugging assembly 3 includes a disc 32, an iron ring 43 is fixedly connected to the center of the upper side of the disc 32, a screw rod 33 is connected to the bearing in the middle of the disc 32, a square tube 31 is fixedly connected to the upper end of the screw rod 33, and a polygonal block 34 is threadedly connected to the screw rod 33, as shown in FIG. Figure 7 As shown, the lower end bearing of the screw rod 33 is connected to a polygonal column 313, and a group of connecting columns 310 are fixedly connected to the upper part of the polygonal column 313. The upper end of the group of connecting columns 310 is fixedly connected to the lower side of the disc 1 32. The polygonal block 34 is arranged on the inner side of the group of connecting columns 310. The upper and lower ends of each side of the polygonal column 313 are respectively hinged with a connecting plate 1 36. The two connecting plates 1 36 on the same side are arranged parallel to each other. The ends of the two connecting plates 1 36 on the same side are respectively hinged with arc support plates 37. Each arc support plate 37 is provided on the inner side of the polygonal column 313. A groove 38 is provided at one end of the support plate 37, and a convex plate 39 is fixedly connected to the other end of each arc-shaped support plate 37. A connecting plate 2 35 is hingedly connected in the middle of a group of connecting plates 1 36 at the upper part, and the upper end of each connecting plate 2 35 is hingedly connected to the corresponding side of the polygonal block 34. A disc 2 311 is fixedly connected to the lower end of the polygonal column 313, and a rubber tube 312 is fixedly connected to the edge of the disc 2 311. The upper edge of the rubber tube 312 is fixedly connected to the edge of the disc 1 32, and a group of arc-shaped support plates 37 are arranged inside the rubber tube 312.

[0026] Example 5 The method for rapid pressure plugging of a natural gas pipeline proposed in this embodiment includes the following steps: S1, start the motor and the annular electromagnet, make the rubber tube fit on the inner wall of the pipe, and turn off the motor and the annular electromagnet; S2, start the electric push rod 1, the motor and the electric push rod 2, so that the saw blade revolves around the gear ring and rotates on its own, so that the saw blade cuts the casing, and turn off the electric push rod 1, the motor and the electric push rod 2; S3. After the cutting is completed, start the electric push rod 2 and use the blocking component to block.

[0027] Example 6 The method for rapid pressure plugging of a natural gas pipeline proposed in this embodiment includes the following steps: S1, start the motor and the annular electromagnet, make the rubber tube fit on the inner wall of the pipe, and turn off the motor and the annular electromagnet; The specific process is as follows: use the existing hoisting machine's wire rope end to connect the lifting ring, put the device and the control line into the natural gas well, use the hoisting machine to lower the device to the required depth, then start the motor and the annular electromagnet, the motor drives the bevel gear 1 to rotate, the bevel gear 1 drives the lead screw to rotate through the bevel gear 2, the square rod shaft 1, the round rod, the square rod shaft 2 and the square tube, the lead screw drives the polygonal block to move downward, the polygonal block drives the corresponding connecting plate 1 to swing parallel to each other through a set of connecting plates 2, so that a set of arc support plates, grooves and convex plates swing downward and outward, the convex plates gradually move out of the corresponding grooves, a set of arc support plates and convex plates push the rubber tube, so that the diameter of the rubber tube becomes larger and fits the inner wall of the pipeline, and the motor and the annular electromagnet are turned off; S2, start the electric push rod 1, the motor and the electric push rod 2, so that the saw blade revolves around the gear ring and rotates on its own, so that the saw blade cuts the casing, and turn off the electric push rod 1, the motor and the electric push rod 2; The specific process is: start the electric push rod 1, the telescopic rod of the electric push rod 1 retracts to drive the square rod shaft 1, the round rod and the square rod shaft 2 to move upward, so that the square rod shaft 2 is separated from the square cylinder, and the square rod shaft 2 is inserted into the square through slot 2; then start the motor to drive the bevel gear 1 to rotate, the bevel gear 1 drives the square rod shaft 2 to rotate through the bevel gear 2, the square rod shaft 1 and the round rod, the square rod shaft 2 drives the turntable to rotate through the square through slot 2, the turntable drives the gear, the vertical rod, the annular disk and the saw blade to rotate, and finally realizes that the saw blade rotates while revolving around the gear ring; at the same time, start the telescopic rod of the electric push rod 2 to slowly extend to drive the cylinder to rotate, and the cylinder drives the corresponding pulley 1, the belt, the pulley 2 and the saw blade to swing through the arc connecting plate and the swing plate, so that the diameter of the orbital motion trajectory of the rotating saw blade gradually increases, and when the saw blade contacts the casing, the saw blade cuts the casing, and the electric push rod 1, the motor and the electric push rod 2 are closed; S3. After the cutting is completed, the electric push rod 2 is started and the blocking component is used for blocking; The specific process is: after the casing cutting is completed, the telescopic rod of the second electric push rod is controlled to retract, so that a group of saw blades gather on the upper side of the annular disk, and then the equipment is lifted upward by the winch, the annular electromagnet and the iron ring are disengaged, the sealing assembly is left at the sealing position, the power output assembly and the cutting assembly are lifted out, and then the existing hydraulic pipe pulling machine is used to pull out the disconnected casing.

Claims

1. Rapid pressure plugging equipment for natural gas pipelines, characterized by: It comprises a power output assembly (1), wherein the power output assembly (1) is connected to a cutting assembly (2), wherein the cutting assembly (2) is connected to a connecting assembly (4), and wherein the connecting assembly (4) is connected to a blocking assembly (3).

2. The natural gas pipeline rapid pressure plugging equipment according to claim 1 is characterized in that: The power output assembly (1) comprises a U-shaped plate (11), one side of the U-shaped plate (11) is fixedly connected to a motor (13), the output shaft of the motor (13) is fixedly connected to a bevel gear 1 (14), the central shaft bearing of the bevel gear 1 (14) is connected to the U-shaped plate (11), the bevel gear 1 (14) is meshingly connected to a bevel gear 2 (15), the central shaft bearing of the bevel gear 2 (15) is connected to a cylinder cover (21), the lower end of the U-shaped plate (11) is fixedly connected to the upper side of the cylinder cover (21), and the middle part of the bevel gear 2 (15) is provided with a square through groove 1 (19); the upper end of the inner side of the U-shaped plate (11) is fixedly connected to the motor (13), the output shaft of the motor (13) is fixedly connected to a bevel gear 1 (14), the central shaft bearing of the bevel gear 1 (14) is connected to the U-shaped plate (1 ... central shaft bearing of the bevel gear 2 (15) is connected to the cylinder cover (21), the lower end of the U-shaped plate (11) is fixedly connected to the upper side of the cylinder cover (21), and the central part of the bevel gear 2 (15) is provided with a square through groove 1 (19); the upper end of the inner side of the U-shaped A movable push rod (12), the telescopic rod bearing of the electric push rod (12) is connected to a square rod shaft (16), the square rod shaft (16) is slidably connected to the square through slot (19), the bevel gear (15) drives the square rod shaft (16) to rotate through the square through slot (19), the lower end of the square rod shaft (16) is fixedly connected to a round rod (17), the round rod (17) passes through the square through slot (25), the lower end of the round rod (17) is fixedly connected to a square rod shaft (18), the square rod shaft (18) is inserted into the blocking component (3), and the upper end of the U-shaped plate (11) is fixedly connected to a lifting ring (5).

3. The natural gas pipeline rapid pressure plugging equipment according to claim 2 is characterized in that: The cutting assembly (2) comprises a cylinder cover (21), the inner side of the cylinder cover (21) is connected to a rotating disk (24) by a bearing, the middle of the rotating disk (24) is provided with two square through grooves (25), the lower side of the rotating disk (24) is fixedly connected to a group of vertical rods (215), the lower end of a group of the vertical rods (215) is fixedly connected to an annular disk (29), the middle part of the annular disk (29) is connected to a cylinder (26) by a bearing, the upper part of the cylinder (26) is hinged to a group of arc-shaped connecting plates (27), the other end of each of the arc-shaped connecting plates (27) is hinged to a corresponding swing plate (28), the center of each of the swing plates (28) is connected to a pulley (213) by a bearing, and a group of the pulleys (213) are connected to the rotating disk (24) by a bearing. The lower end of the central axis of the rotating disk (213) is respectively connected to the annular disk (29) by bearings, the pulley one (213) is correspondingly connected to the pulley two (211) through the belt (210), the central axis bearing of the pulley two (211) is connected to the outer end of the swing plate (28), the center of the upper side of the pulley two (211) is fixedly connected to a saw blade (212), the rotating disk (24) is connected to a group of gears (23) by bearings, the lower end of the central axis of the gear (23) is fixedly connected to the center of the corresponding pulley one (213), the gear (23) is meshingly connected to a gear ring (22), and the gear ring (22) is fixedly connected to the center of the inner upper end of the cylinder cover (21).

4. The natural gas pipeline rapid pressure plugging equipment according to claim 3 is characterized in that: The lower side of the cylinder (26) is hinged with an electric push rod 2 (216) via a pin shaft, the shell end of the electric push rod 2 (216) is hinged to the lower side of the annular disk (29) via a pin shaft, a storage battery (214) is fixedly mounted on the lower side of the annular disk (29), the storage battery (214) is electrically connected to the electric push rod 2 (216), and the storage battery (214) has a built-in remote control signal receiving module and a control module.

5. The natural gas pipeline rapid pressure plugging equipment according to claim 4 is characterized in that: The connecting assembly (4) comprises a square plate (41), the square plate (41) being fixedly connected to the lower side of the annular disk (29), an annular electromagnet (42) being fixedly connected to the lower end of the square plate (41), an iron ring (43) being arranged inside the annular electromagnet (42), and the blocking assembly (3) being fixedly connected inside the iron ring (43).

6. The natural gas pipeline rapid pressure plugging equipment according to claim 5 is characterized in that: The blocking assembly (3) comprises a disc (32), the iron ring (43) being fixedly connected to the center of the upper side of the disc (32), a screw rod (33) being connected to a bearing in the middle of the disc (32), a square tube (31) being fixedly connected to the upper end of the screw rod (33), a polygonal block (34) being threadedly connected to the screw rod (33), a polygonal column (313) being connected to a bearing at the lower end of the screw rod (33), a group of connecting columns (310) being fixedly connected to the upper part of the polygonal column (313), the upper end of the group of connecting columns (310) being fixedly connected to the lower side of the disc (32), the polygonal block (34) being arranged on the inner side of the group of connecting columns (310), the upper and lower ends of each side surface of the polygonal column (313) being respectively hingedly connected to a connecting plate (36), and the two connecting plates on the same side are connected to the connecting plates (36) by a hinge. The connecting plates (36) are arranged parallel to each other. The ends of the two connecting plates (36) on the same side are respectively hinged with arc-shaped support plates (37). One end of each arc-shaped support plate (37) is provided with a groove (38). The other end of each arc-shaped support plate (37) is fixedly connected with a convex plate (39). A group of connecting plates (36) at the upper part are respectively hinged with connecting plates (35) at the middle part. The upper end of each connecting plate (35) is hinged to a corresponding side of the polygonal block (34). The lower end of the polygonal column (313) is fixedly connected with a disk (311). The edge of the disk (311) is fixedly connected with a rubber tube (312). The upper edge of the rubber tube (312) is fixedly connected to the edge of the disk (32). A group of arc-shaped support plates (37) is arranged inside the rubber tube (312).

7. A method for rapid pressure plugging of a natural gas pipeline, characterized in that: Using the natural gas pipeline rapid pressure plugging device as claimed in claim 6 comprises the following steps: S1, start the motor and the annular electromagnet, make the rubber tube fit on the inner wall of the pipe, and turn off the motor and the annular electromagnet; S2, start the electric push rod 1, the motor and the electric push rod 2, so that the saw blade revolves around the gear ring and rotates on its own, so that the saw blade cuts the casing, and turn off the electric push rod 1, the motor and the electric push rod 2; S3. After the cutting is completed, start the electric push rod 2 and use the blocking component to block.

8. The method for rapid pressure plugging of a natural gas pipeline according to claim 7, characterized in that: The specific process of S1 is: use the existing winch's wire rope end to connect the lifting ring, put the device and the control line into the natural gas well, use the winch to lower the device to the required depth, and then start the motor and the annular electromagnet, the motor drives the bevel gear 1 to rotate, the bevel gear 1 drives the lead screw to rotate through the bevel gear 2, the square rod shaft 1, the round rod, the square rod shaft 2 and the square tube, the lead screw drives the polygonal block to move downward, the polygonal block drives the corresponding connecting plate 1 to swing parallel to each other through a group of connecting plates 2, so that a group of arc support plates, grooves and convex plates swing downward and outward, the convex plates gradually move out of the corresponding grooves, a group of arc support plates and convex plates push the rubber tube, so that the diameter of the rubber tube becomes larger and fits the inner wall of the pipeline, and the motor and the annular electromagnet are turned off.

9. The method for rapid pressure plugging of a natural gas pipeline according to claim 7, characterized in that: The specific process of S2 is as follows: start the electric push rod 1, and the telescopic rod of the electric push rod 1 retracts to drive the square rod shaft 1, the round rod and the square rod shaft 2 to move upward, so that the square rod shaft 2 is separated from the square cylinder, and the square rod shaft 2 is inserted into the square through slot 2; then start the motor to drive the bevel gear 1 to rotate, the bevel gear 1 drives the square rod shaft 2 to rotate through the bevel gear 2, the square rod shaft 1 and the round rod, the square rod shaft 2 drives the turntable to rotate through the square through slot 2, the turntable drives the gear, the vertical rod, the annular disk and the saw blade to rotate, and finally the saw blade rotates while revolving around the gear ring; at the same time, start the telescopic rod of the electric push rod 2 to slowly extend to drive the cylinder to rotate, and the cylinder drives the corresponding pulley 1, belt, pulley 2 and saw blade to swing through the arc connecting plate and the swing plate, so that the diameter of the orbital motion trajectory of the rotating saw blade gradually increases, and when the saw blade contacts the casing, the saw blade cuts the casing, and the electric push rod 1, the motor and the electric push rod 2 are turned off.

10. The method for rapid plugging of a natural gas pipeline under pressure according to claim 7, characterized in that: The specific process of S3 is as follows: after the casing cutting is completed, the telescopic rod of the second electric push rod is controlled to retract, so that a group of saw blades gather on the upper side of the annular disk, and then the equipment is lifted upward by the winch, the annular electromagnet and the iron ring are disengaged, the blocking assembly is left at the blocking position, the power output assembly and the cutting assembly are lifted out, and then the existing hydraulic pipe pulling machine is used to pull out the disconnected casing.

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