Rapid carbon fiber repairing and reinforcing device for oil and gas pipeline

Abstract

The invention discloses a carbon fiber rapid repairing and reinforcing device for an oil and gas pipeline, and relates to repairing equipment for damaged oil and gas pipelines. The device comprises a circumferential reinforcing mechanism (1), an annular seat fixing mechanism (2) and an axial movement mechanism (3), wherein the annular seat fixing mechanism (2) can wrap a to-be-repaired pipeline during use, the circumferential reinforcing mechanism (1) is installed in the middle of the annular seat fixing mechanism (2), and the axial movement mechanism (3) is installed on the side face of the annular seat fixing mechanism (2); the annular seat fixing mechanism (2) is provided with a pair of fixing rings (15) with the same specification, each fixing ring (15) is formed by splicing two semi-circular rings with the same size, the tail end of each semi-circular ring is provided with an extending boss, a threaded through hole (17) is formed in each boss, the two semi-circular rings are fixedly spliced to form the fixing rings (15) through fixing bolts (18), a threaded hole is formed between the two fixing rings (15), and the threaded through holes (17) are connected with the fixing rings (15) through bolts (18). Threads are arranged at the two ends of the connecting rod (13) respectively.

Description

Technical Field

[0001] This invention relates to a rapid carbon fiber repair and reinforcement device for oil and gas pipelines, and is a repair equipment for damaged oil and gas pipelines. Background Technology

[0002] In long-distance oil and gas pipeline projects, metal pipelines are subjected to complex conditions such as low-temperature environments, acid and alkali corrosion, and high-pressure medium transportation during their service life, which can easily lead to structural damage and leakage, such as holes and cracks. Existing repair solutions often involve stopping the transportation of oil and gas before repairing the damage. In addition, the damaged pipeline section is often cut and the intact pipeline is welded together. Such repairs are often time-consuming and consume a lot of materials. Moreover, because the transportation of oil and gas needs to be stopped during the repair, the efficiency of oil and gas transportation is seriously affected. This is especially uneconomical when repairing minor holes and cracks.

[0003] In existing technologies, such as the device for reinforcing and repairing pipeline defects (application number CN202110916871.8), a sliding rail within an upper and lower fixing component drives a moving mechanism and a fixing plate. An electric push rod, in conjunction with a pressure plate and a spring, repairs the pipeline. However, this repair method does not consider the axial repair of larger pipelines, and can only perform fixed circumferential repairs and partial axial repairs. Furthermore, this method requires sophisticated equipment and is difficult to meet the requirements for repairing larger pipelines.

[0004] In view of the shortcomings of existing technologies, it is necessary to design a new solution to meet actual transportation needs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rapid carbon fiber repair and reinforcement device for oil and gas pipelines. This device uses carbon fiber material impregnated with adhesive to form a tight composite layer with the pipeline surface through a circumferential reinforcement mechanism. Then, through circumferential movement on a ring seat fixing mechanism and axial movement through an axial movement mechanism, it maintains the continuity of medium transportation while achieving efficient repair of damaged parts, thereby ensuring the structural integrity and operational safety of the pipeline.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A carbon fiber rapid repair and reinforcement device for oil and gas pipelines includes a circumferential reinforcement mechanism (1), an annular seat fixing mechanism (2), and an axial movement mechanism (3); wherein the annular seat fixing mechanism (2) can wrap the pipeline to be repaired when in use, the circumferential reinforcement mechanism (1) is installed in the middle of the annular seat fixing mechanism (2), and the axial movement mechanism (3) is installed on the side of the annular seat fixing mechanism (2).

[0007] The annular seat fixing mechanism (2) has a pair of equal specification fixing rings (15), the fixing ring (15) is spliced by two equal size semicircular rings, the tail end of the semicircular ring has an outwardly extending boss, a threaded hole (17) is arranged in the boss, the two semicircular rings are fixed and spliced into the fixing ring (15) by a fixing bolt (18), a threaded hole is arranged between the two fixing rings (15), the two ends of the connecting rod (13) are respectively provided with threads, and the connecting rod (13) is connected with the threaded holes on the fixing ring (15) through threads; the circumferential reinforcing mechanism (1) is installed on the connecting rod (13).

[0008] Specifically, three universal wheels (20) are also arranged at equal intervals in the fixing ring (15), in use, the universal wheels (20) are in contact with the surface of the pipeline to be repaired, by arranging three universal wheels (20), a 120° included angle is formed between the universal wheels (20), the stability of the movement of the invention is ensured, the two fixing rings (15) symmetrically install the universal wheels (20), form bidirectional constraint, and effectively inhibit the vibration deviation in the pipeline repair process.

[0009] Further, the fixing ring (15) and the universal wheel (20) are fixedly connected through the telescopic shaft one (19) or the spring shock absorber; all the universal wheels (20) can be adjusted in multi-degree-of-freedom pose along the circumferential direction of the pipeline through the telescopic shaft one (19) or the spring shock absorber, and are closely attached to the surface of the pipeline; the telescopic shaft one (19) or the spring shock absorber is a commercially available product.

[0010] Specifically, the circumferential reinforcing mechanism (1) has two equal size fixing plates (16), the middle part of the fixing plate (16) penetrates the connecting rod (13), and a cloth laying device, a glue injecting device and a glue scraping device are arranged between the two fixing plates (16) from top to bottom.

[0011] The cloth laying device has a guide roller (5), and a carbon fiber cloth (4) used for repairing is wound on the guide roller (5).

[0012] The glue injecting device has a glue injecting pipe (7), a plurality of ball head glue dispensing needles (8) are equally distributed on the glue injecting pipe (7), a glue storage tank (6) is communicated with the glue injecting pipe (7) through a pipeline on one side of the glue injecting pipe (7), the glue storage tank (6) is higher than the glue injecting pipe (7), so that the glue flows into the glue injecting pipe (7) under the action of gravity.

[0013] Further, when the pipeline communicating between the glue injecting pipe (7) and the glue storage tank (6) is a hose, the glue storage tank (6) is fixed outside the fixing plate (16) by a hook or double-sided adhesive tape; when the pipeline communicating between the glue injecting pipe (7) and the glue storage tank (6) is a hard pipe, the glue storage tank (6) is suspended.

[0014] Further, the ball head glue dispensing needles (8) are arranged in two rows, and the two rows of ball head glue dispensing needles (8) have an included angle α, the glue injection pipe (7) is provided with a spraying pump, and the adhesive is quantitatively sprayed through an equidistant array; the spraying pump is connected with the power supply through a controller.

[0015] The spraying pump is a commercially available product, and specifically any one of A10, A15 or A20 of the brand of Master Spray.

[0016] The controller and the power supply are both commercially available products, the controller is a micro switch, a single-chip microcomputer or a programmable controller, and the power supply is a rechargeable battery.

[0017] The glue scraping device has a chain conveyor (9), a motor (10) and a compaction scraper (11); the chain conveyor (9) is installed between two fixed plates (16), the chain conveyor (9) is provided with a motor (10) for driving the chain conveyor (9), and the outer surface of the chain conveyor (9) is provided with a plurality of compaction scrapers (11) of the same size at equal intervals; in use, the motor (10) drives the chain conveyor (9) to rotate in a single direction, thereby driving the compaction scraper (11) to move, and the compaction scraper (11) can compact the carbon fiber cloth (4) with glue sprayed on the surface of the carbon fiber cloth (4) to the surface of the pipeline (14) to be repaired, extrude excess air and tightly adhere together.

[0018] The motor (10) is electrically connected with the power supply through the controller.

[0019] The axial movement mechanism (3) is connected with the fixed ring (15) through a fixed connecting rod (27), and the axial movement mechanism (3) is a driving wheel provided with a hub motor or a track walking device; the track walking device has a suspension mechanism, a driving wheel (28) and a driven wheel (29) are respectively installed at two ends of the suspension mechanism, a walking track (21) is wound on the driving wheel (28) and the driven wheel (29), and an axial driving motor (23) is connected with the driving wheel (28) in a power manner, and the axial driving motor (23) is fixed to the suspension mechanism.

[0020] Further, the tail end of the fixed connecting rod (27) is provided with a second telescopic shaft (26), the second telescopic shaft (26) is movably connected with the axial movement mechanism (3), the second telescopic shaft (26) is stretched downward when the axial movement mechanism (3) is needed to pull the device to move, the axial movement mechanism (3) is attached to the surface of the pipeline, the second telescopic shaft (26) is retracted upward when the device is not needed to move, and the device can also adapt to the pipeline reinforcement requirements of different sizes of defects through the up-down telescoping of the second telescopic shaft (26).

[0021] The walking track (21) is a rubber track or a glued track; compared with a steel track made of pure metal, the walking track has small noise, long service life and will not cause scratching damage to the surface of the pipeline.

[0022] The axial driving motor (23) is electrically connected with the power supply through the controller.

[0023] The axial movement mechanism (3) is three in number, is correspondingly installed with the universal wheel (20), and a 120° included angle is formed between the three axial movement mechanisms (3).

[0024] The use method of the oil and gas pipeline carbon fiber rapid repair and reinforcement device is as follows: the oil and gas pipeline carbon fiber rapid repair and reinforcement device is installed on the pipeline (14) to be repaired, the oil and gas pipeline carbon fiber rapid repair and reinforcement device is pulled to the predetermined position of the pipeline (14) to be repaired through the axial movement mechanism (3), the glue in the adhesive storage tank (6) is continuously coated on the surface of the carbon fiber cloth (4) through the ball head glue dispensing needle (8) on the glue injection pipe (7), under the driving of the motor (10), the compacting scraper (11) on the chain conveyor (9) continuously adheres the carbon fiber cloth (4) coated with glue to the surface of the pipeline (14) to be repaired, and is wound according to the number of turns as required; after the winding is completed, the carbon fiber cloth (4) is cut by a cutter.

[0025] If only one place needs to be repaired, the oil and gas pipeline carbon fiber rapid repair and reinforcement device can be removed from the pipeline (14) to be repaired.

[0026] If the remaining places of the pipeline (14) to be repaired also need to be repaired, the axial movement mechanism (3) is only needed to be lowered through the second telescopic shaft (26), and the axial movement mechanism (3) is walked to the next place to be repaired.

[0027] Compared with the prior art, the oil and gas pipeline carbon fiber rapid repair and reinforcement device has the following beneficial effects: 1、The oil and gas pipeline carbon fiber rapid repair and reinforcement device uses carbon fiber cloth as a repair material to repair and reinforce the pipeline, and through the circumferential reinforcement mechanism, the carbon fiber is coated with glue on both sides when passing through the glue injection pipe in the movement process, that is, the upper row of glue dispensing needles is arranged at an inclination angle of +45°, and the lower row of glue dispensing needles is symmetrically distributed at an inclination angle of -45°. The space orthogonal distribution glue spraying mode forms an overlapping glue film covering layer in the flattening process of the carbon fiber, and ensures that the adhesive realizes dead angle-free infiltration on the surface of the carbon fiber. The phase difference glue coating mode of the two rows of glue dispensing needles effectively eliminates the joint defects that may be generated in the traditional single row glue coating, and the impregnated carbon fiber is uniformly attached to the surface of the repaired pipeline under the action of the compacting scraper of the chain conveyor. Compared with the existing pipeline repair, the circumferential reinforcement mechanism of the carbon fiber can quickly complete the repair of the damaged pipeline, and reduce the environmental damage and economic loss caused by the pipeline damage. And the chain conveyor in the application drives the compacting scraper to continuously move circumferentially under the action of the motor, so that the carbon fiber can be compacted on the pipeline to be repaired for multiple times, and the carbon fiber is more uniformly attached.

[0028] 2、The application integrates three groups of first telescopic shafts and their coupled universal wheels in the circumferential bearing interface of two fixed rings respectively, forms a 120° circumferential equiangular angle symmetrical distribution configuration, realizes the change in the vertical direction by adjusting the telescopic amount, and the universal wheel integrates the multi-degree-of-freedom movement function, the axial sliding and the circumferential rolling, in combination with the vertical displacement change of the first telescopic shaft, can be used for the repair work of different size pipelines, and greatly enhances the applicability of the device.

[0029] 3、The rear part of the track in the axial movement mechanism is connected with a transmission rod by an axial driving motor, drives the transmission gear to rotate, thereby accurately controlling the position of the track along the pipeline in the axial direction, the front part of the track is provided with a double parallel link mechanism, a second telescopic shaft installed at the top end of the double parallel link mechanism can be adjusted in the vertical direction, three sets of such driving-telescopic combined units are uniformly distributed at intervals of 120 degrees, and the device can adapt to the pipeline reinforcement requirements of different size defects through cooperative work.

[0030] 4、The application is completed by the cooperation of the circumferential and axial movement during the repair of the pipeline, first, the circumferential reinforcement mechanism moves in the circumferential direction between the left fixed ring and the right fixed ring through the connecting shaft, completes part of the repair work of the pipeline, then the universal wheel of the annular seat fixing mechanism in the axial movement mechanism is driven by the track to move in the axial direction, and then the circumferential movement of the circumferential reinforcement mechanism is repeated to realize the complete repair of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is a front view of the overall structure of the application; Figure 3 It is a left view of the overall structure of the application; Figure 4 It is a top view of the overall structure of the application; Figure 5 It is a schematic diagram of the repair of the circumferential reinforcement mechanism; Figure 6 It is a schematic diagram of the circumferential reinforcement mechanism; Figure 7 It is a schematic diagram of the annular seat fixing mechanism; Figure 8 It is a schematic diagram of the axial movement mechanism; In the figure: 1 circumferential reinforcement mechanism, 2 annular seat fixing mechanism, 3 axial movement mechanism.

[0032] 4 carbon fiber, 5 guide roller, 6 adhesive storage tank, 7 glue injection pipe, 8 ball head glue dispensing needle, 9 chain conveyor, 10 motor, 11 compaction blade, 12 support plate, 13 connecting rod, 14 pipeline to be repaired, 15 fixing ring, 16 fixing plate, 17 adjusting screw hole, 18 hexagonal head bolt, 19 first telescopic shaft, 20 universal wheel, 21 track, 22 transmission gear, 23 axial drive motor, 24 transmission rod, 25 double parallel connecting rod, 26 second telescopic shaft, 27 fixed connecting rod, 28 driving wheel, 29 driven wheel. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described below in conjunction with the accompanying drawings Figures 1-8 The technical solutions of the present application will be described below in conjunction with the accompanying drawings The described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on this example, other examples obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only to describe the application and simplify the description, and do not mean a specific orientation. At the same time, "first", "second" are used only to simplify the description, and cannot be understood as indicating or in terms of relative importance.

[0035] A kind of carbon fiber fast repair reinforcing device of oil and gas pipeline includes circumferential reinforcing mechanism (1), annular seat fixing mechanism (2) and axial motion mechanism (3);Wherein annular seat fixing mechanism (2) can be wrapped in the pipeline to be repaired when in use, circumferential reinforcing mechanism (1) is installed in the middle of annular seat fixing mechanism (2), and axial motion mechanism (3) is installed on the side of annular seat fixing mechanism (2).

[0036] The annular seat fixing mechanism (2) has a pair of equal specifications fixing ring (15), the fixing ring (15) is spliced by two equal size semicircular rings, the tail end of the semicircular ring has an outwardly extending boss, a threaded hole (17) is arranged in the boss, and the two semicircular rings are fixed and spliced into the fixing ring (15) by the fixing bolt (18). Threaded holes are arranged between the two fixing rings (15), the ends of the connecting rod (13) are respectively provided with threads, and the connecting rod (13) is connected to the threaded holes in the fixing ring (15) by threads. Circumferential reinforcing mechanism (1) is installed on connecting rod (13).

[0037] Specifically, three universal wheels (20) are also equidistantly arranged in the fixing ring (15), and the universal wheels (20) are in contact with the surface of the pipeline to be repaired during use; by arranging three universal wheels (20), an included angle of 120° is formed between the universal wheels (20), so that the stability of the movement of the pipeline repair device is ensured; two fixing rings (15) are symmetrically arranged with the universal wheels (20), so that bidirectional constraint is formed, and vibration deviation in the pipeline repair process is effectively inhibited.

[0038] Further, the fixing ring (15) and the universal wheel (20) are fixedly connected through the telescopic shaft one (19) or the spring shock absorber; the telescopic shaft one (19) or the spring shock absorber enables all the universal wheels (20) to be adjusted in multiple degrees of freedom along the circumferential direction of the pipeline, so that the universal wheels (20) are closely attached to the surface of the pipeline; the telescopic shaft one (19) or the spring shock absorber is a commercially available product.

[0039] Specifically, the circumferential reinforcing mechanism (1) has two equal-size fixing plates (16), the middle part of the fixing plate (16) penetrates the connecting rod (13), and a cloth laying device, a glue injecting device and a glue scraping device are arranged from top to bottom between the two fixing plates (16).

[0040] The cloth laying device has a guide roller (5), and a carbon fiber cloth (4) for repairing is wound on the guide roller (5).

[0041] The glue injecting device has a glue injecting pipe (7), a plurality of ball head glue injecting needles (8) are equidistantly arranged on the glue injecting pipe (7), a glue tank (6) is communicated with the glue injecting pipe (7) through a pipeline on one side of the glue injecting pipe (7), and the glue tank (6) is higher than the glue injecting pipe (7), so that the glue flows into the glue injecting pipe (7) under the action of gravity.

[0042] Further, when the pipeline communicating between the glue injecting pipe (7) and the glue tank (6) is a hose, the glue tank (6) is fixed to the outside of the fixing plate (16) through a hook or double-sided adhesive; when the pipeline communicating between the glue injecting pipe (7) and the glue tank (6) is a hard pipe, the glue tank (6) is suspended.

[0043] Further, the ball head glue injecting needles (8) are arranged in two rows, and the two rows of ball head glue injecting needles (8) have an included angle α; a spraying pump is arranged on the glue injecting pipe (7), and the glue tank (6) is connected to the spraying pump through a controller.

[0044] The spraying pump is a commercially available product, and specifically is any one of a Master Spray A10, a Master Spray A15 or a Master Spray A20.

[0045] The controller and the power supply are commercially available products, the controller is a micro switch, a single-chip microcomputer or a programmable controller, and the power supply is a rechargeable battery.

[0046] The glue scraping device has a chain conveyor (9), a motor (10) and a compaction scraper (11); the chain conveyor (9) is installed between two fixed plates (16), the chain conveyor (9) is equipped with the motor (10) for driving the chain conveyor (9), and the chain conveyor (9) is equipped with a plurality of compaction scrapers (11) of the same size at equal intervals on the outer surface; in use, the motor (10) drives the chain conveyor (9) to rotate in a single direction, thereby driving the compaction scraper (11) to move, and the compaction scraper (11) can compact the carbon fiber cloth (4) sprayed with glue on the surface to the surface of the pipeline (14) to be repaired, extrude excess air and tightly adhere together.

[0047] The motor (10) is electrically connected with the power supply through the controller.

[0048] The axial movement mechanism (3) is connected with the fixed ring (15) through the fixed connecting rod (27), and the axial movement mechanism (3) is a driving wheel provided with a hub motor or a track walking device; the track walking device has a suspension mechanism, a driving wheel (28) and a driven wheel (29) are respectively installed at both ends of the suspension mechanism, a walking track (21) is wound on the driving wheel (28) and the driven wheel (29), and an axial driving motor (23) is connected with the driving wheel (28) in power, and the axial driving motor (23) is fixed to the suspension mechanism.

[0049] Further, the tail end of the fixed connecting rod (27) is provided with a second telescopic shaft (26), the second telescopic shaft (26) is movably connected with the axial movement mechanism (3), when the axial movement mechanism (3) is needed to pull the device to move, the second telescopic shaft (26) is stretched downward, the axial movement mechanism (3) is attached to the surface of the pipeline, when the movement is not needed, the second telescopic shaft (26) is retracted upward. And it can also adapt to the reinforcement needs of pipelines of different sizes and defects through the up-down telescoping of the second telescopic shaft (26).

[0050] The walking track (21) is a rubber track or a rubber-coated track; compared with a steel track made of pure metal, the walking track has small noise, long service life and will not cause scratching damage to the surface of the pipeline.

[0051] The axial driving motor (23) is electrically connected with the power supply through the controller.

[0052] The number of the axial movement mechanisms (3) is three, which are correspondingly installed with the universal wheels (20), and the three axial movement mechanisms (3) form an included angle of 120°.

[0053] The use method of the oil and gas pipeline carbon fiber rapid repair reinforcing device is that the oil and gas pipeline carbon fiber rapid repair reinforcing device is installed on the pipeline (14) to be repaired, the oil and gas pipeline carbon fiber rapid repair reinforcing device is pulled to the predetermined position of the pipeline (14) to be repaired through the axial movement mechanism (3), the glue in the adhesive storage tank (6) is continuously coated on the surface of the carbon fiber cloth (4) through the ball head dispensing needle (8) on the glue injection pipe (7), the compacting scraper (11) on the chain conveyor (9) is continuously tightly attached to the surface of the pipeline (14) to be repaired under the driving of the motor (10), and the carbon fiber cloth (4) is wound according to the number of turns as required; after the winding is completed, the carbon fiber cloth (4) is cut by a cutter.

[0054] If only one place needs to be repaired, the oil and gas pipeline carbon fiber rapid repair reinforcing device can be removed from the pipeline (14) to be repaired.

[0055] If the remaining places of the pipeline (14) to be repaired also need to be repaired, the axial movement mechanism (3) is only needed to be lowered through the second telescopic shaft (26), and the axial movement mechanism (3) is walked to the next place to be repaired.

[0056] The application will be further explained and described below in combination with specific examples.

[0057] As shown in Figure 1 The embodiment provides an oil and gas pipeline carbon fiber rapid repair reinforcing device, which comprises a circumferential reinforcing mechanism (1), an annular seat fixing mechanism (2) and an axial movement mechanism (3).

[0058] As shown in Figure 1As shown, the circumferential reinforcement mechanism (1) is used to reinforce the pipe (15) to be repaired. The carbon fiber cloth (4) is laid flat on the guide roller (5), which transports the carbon fiber cloth (4) to the position of the glue-coating tube (7) and the chain conveyor (9) like a conveyor belt. The glue-coating tube (7) adopts a dual-gradient spraying layout. The ball-head glue-dispensing needles (8) arrayed on the upper surface of the tube are inclined at a +45° angle, while the ball-head glue-dispensing needles (8) on the lower surface are mirror-symmetrically distributed at a -45° angle. The spraying axes of the two rows of ball-head glue-dispensing needles (8) form a 90° spatial vector angle. When the glue-applying tube (7) moves in a circular motion with the connecting rod (13), the phase difference spraying of the double-row glue nozzles (8) can eliminate the joint defects of traditional single-row glue application. At the same time, the glue-applying tube (7) is connected to the adhesive storage tank (6) on the left side, and the adhesive is stably delivered from here to the ball-head glue-applying needle (8). The chain conveyor (9) is driven by two motors (10), and the top compaction scraper (11) is responsible for pressing the glued carbon fiber tightly onto the pipe. The skeleton of the entire device is a connecting rod (13), with support plates (12) symmetrically mounted on both sides. The guide roller (5), glue-applying tube (7), and chain conveyor (9) are all fixed on this connecting rod (13). In use, the connecting rod (13) will carry the entire circumferential reinforcement mechanism (1) to rotate along the grooves of the left fixed ring (15) and the right fixed ring (16), and evenly apply the carbon fiber around the pipe like a compass drawing a circle.

[0059] like Figure 1 As shown, the annular seat fixing mechanism (2) is used to fix the position of the pipe to be repaired (14) and the circumferential movement of the circumferential reinforcement mechanism (1) on the fixing ring. The pipe to be repaired (14) has a left fixing ring (15) and a right fixing ring (16) symmetrically distributed along the axial direction. The upper half fixing ring (15a) is installed on the upper part of the left fixing ring (15), and the lower half fixing ring (15b) is installed on the lower part. Both the upper half fixing ring (15a) and the lower half fixing ring (15b) are provided with two symmetrical adjusting threaded holes (17). A hexagonal head bolt (18) is placed inside the adjusting threaded hole (17). By adjusting the hexagonal head bolt (18), the position of the left fixing ring (15) can be adjusted. Three sets of first telescopic shafts (19) and matching casters (20) are fixed to the bottom circumferential edge of the left fixed ring (15). The composite motion unit formed by these three sets of first telescopic shafts (19) and matching casters (20) is evenly distributed along the circumference of the left fixed ring (15). Each unit forms a 120° circumferential symmetrical distribution configuration, ensuring that it can flexibly adapt to different conditions of the pipeline during the repair process. The structure of the right fixed ring (16) is exactly the same as that of the left fixed ring (15). The position is also adjusted by adjusting the threaded hole (17) and the hexagonal head bolt (18). The bottom is also equipped with three sets of first telescopic shafts (19) and matching casters (20), so as to achieve the same flexible movement as the left fixed ring (15), thereby jointly completing the repair and reinforcement work of the pipeline.

[0060] As shown in Figure 1 The axial motion mechanism (3) is used for driving the annular seat fixing mechanism (2) to move axially on the surface of the repaired pipeline (14). The axial motion mechanism (3) is installed parallel to the surface of the pipeline (14) to be repaired, and the core driving part is composed of an axial driving motor (23), a transmission rod (24) and a double-sided transmission gear (22) to form a gear-track coupling transmission system. During operation, the torque generated by the axial driving motor (23) is transmitted to the gear (22) through the transmission rod (24), and then the track (21) is driven to realize accurate axial feeding motion. The double parallel connecting rods (25) of the front end motion mechanism are fixedly connected with the second telescopic shaft (26), and the second telescopic shaft (26) is connected with the left fixed ring (15) through the fixed connecting rod (27). With the axial movement of the track, the fixed connecting rod (27) drives the left fixed ring (15) and the right fixed ring (16) to move axially. The three groups of motion units are symmetrically arranged on the left side of the left fixed ring (15) according to a phase angle of 120°, and the up-down telescopic movement of the telescopic shaft (27) ensures the stable operation of the device and the flexible adaptation to different conditions of the pipeline during the repair process.

[0061] The application has significant technical advantages in repairing damaged parts with carbon fiber reinforced composite materials. The high strength / weight ratio, chemical corrosion resistance, long-term service stability and excellent safety and reliability can effectively realize pipeline integrity repair and service life extension.

[0062] After the pipeline is damaged or perforated, how to implement non-stop repair operation to restore the medium conveying capacity and ensure the operation continuity has become a technical bottleneck to be overcome in the field of oil and gas long-distance pipeline maintenance. The technical scheme realizes the rapid structure reinforcement of the damaged part by combining the carbon fiber composite material and the circumferential reinforcement, the cooperation of the axial motion and the annular seat fixing mechanism, and the online repair process, completes the in-situ repair of the damaged pipe section under the condition of not interrupting the medium conveying, and significantly improves the repair efficiency and structural reliability.

[0063] The application is suitable for repairing and reinforcing devices of different sizes, especially larger sizes, can control the movement of the reinforcing device in the axial and circumferential directions of the pipeline to be repaired, and at the same time ensures the positioning difficulty of the repairing and reinforcing device, and is especially suitable for repairing and reinforcing some slightly damaged pipelines.

Claims

1. A carbon fiber rapid repair and reinforcement device for oil and gas pipelines, characterized by: It comprises a circumferential reinforcing mechanism (1), a ring seat fixing mechanism (2) and an axial movement mechanism (3); wherein the ring seat fixing mechanism (2) can wrap the pipeline to be repaired in use, the circumferential reinforcing mechanism (1) is installed in the middle of the ring seat fixing mechanism (2), and the axial movement mechanism (3) is installed on the side of the ring seat fixing mechanism (2); The ring seat fixing mechanism (2) has a pair of equal specification fixing rings (15), the fixing ring (15) is spliced by two equal size semicircular rings, the tail end of the semicircular ring has an outwardly extending boss, a threaded hole (17) is arranged in the boss, the two semicircular rings are fixed and spliced into the fixing ring (15) by a fixing bolt (18), threaded holes are arranged between the two fixing rings (15), the two ends of the connecting rod (13) are respectively provided with threads, and the connecting rod (13) is connected with the threaded holes in the fixing rings (15) through threads; the circumferential reinforcing mechanism (1) is installed on the connecting rod (13).

2. The carbon fiber rapid repair reinforcing device for oil and gas pipelines according to claim 1, characterized in that: Three universal wheels (20) are also arranged equidistantly in the fixing ring (15), in use, the universal wheels (20) are in contact with the surface of the pipeline to be repaired, and by arranging three universal wheels (20), a 120° included angle is formed between the universal wheels (20).

3. The carbon fiber rapid repair reinforcing device for oil and gas pipelines according to claim 1, characterized in that: The fixing ring (15) and the universal wheel (20) are fixedly connected through the telescopic shaft one (19) or the spring shock absorber; all the universal wheels (20) can be adjusted in multi-degree-of-freedom pose along the circumferential direction of the pipeline through the telescopic shaft one (19) or the spring shock absorber, and are closely attached to the surface of the pipeline.

4. The carbon fiber rapid repair reinforcing device for oil and gas pipelines according to claim 1, characterized in that: The circumferential reinforcing mechanism (1) has two equal size fixing plates (16), the middle part of the fixing plate (16) penetrates the connecting rod (13), and a cloth laying device, a glue injecting device and a glue scraping device are arranged from top to bottom between the two fixing plates (16); The cloth laying device has a guide roller (5), and the carbon fiber cloth (4) used for repair is wound on the guide roller (5).

5. The carbon fiber rapid repair reinforcing device for oil and gas pipelines according to claim 4, characterized in that: The glue injecting device has a glue injecting pipe (7), a plurality of ball head glue injecting needles (8) are equidistantly distributed on the glue injecting pipe (7), a glue storage tank (6) is communicated with the glue injecting pipe (7) through a pipeline on one side of the glue injecting pipe (7), and the glue storage tank (6) is higher than the glue injecting pipe (7) so that the glue flows into the glue injecting pipe (7) under the action of gravity; When the pipeline communicated between the glue injecting pipe (7) and the glue storage tank (6) is a hose, the glue storage tank (6) is fixed to the outside of the fixing plate (16) through a hook or double-sided adhesive; when the pipeline communicated between the glue injecting pipe (7) and the glue storage tank (6) is a hard pipe, the glue storage tank (6) is suspended.

6. The carbon fiber rapid repair reinforcing device for oil and gas pipelines according to claim 5, characterized in that: The ball head glue dispensing needle (8) is arranged in two rows, and the two rows of ball head glue dispensing needles (8) have an included angle α, the glue injection pipe (7) is provided with a spraying pump, and the adhesive is quantitatively sprayed through an equidistant array; the spraying pump is connected with the power supply through the controller.

7. The carbon fiber quick repair and reinforcement device for oil and gas pipelines according to claim 1, characterized in that: The glue scraping device has a chain conveyor (9), a motor (10) and a compaction scraper (11); the chain conveyor (9) is installed between the two fixed plates (16), and the chain conveyor (9) is equipped with the motor (10) for driving the chain conveyor (9); the outer surface of the chain conveyor (9) is equidistantly provided with a plurality of compaction scrapers (11) of the same size; in use, the motor (10) drives the chain conveyor (9) to rotate in a single direction, thereby driving the compaction scraper (11) to move; the compaction scraper (11) can compact the carbon fiber cloth (4) with glue sprayed on the surface to the surface of the pipeline (14) to be repaired, extrude excess air and tightly adhere together. The motor (10) is electrically connected with the power supply through the controller.

8. The carbon fiber quick repair and reinforcement device for oil and gas pipelines according to claim 1, characterized in that: The axial movement mechanism (3) is connected with the fixed ring (15) through the fixed connecting rod (27), and the axial movement mechanism (3) is a driving wheel provided with a hub motor or a track walking device; the track walking device has a suspension mechanism, and a driving wheel (28) and a driven wheel (29) are respectively installed at both ends of the suspension mechanism; the driving wheel (28) and the driven wheel (29) are wound with a walking track (21), and the driving wheel (28) is connected with an axial driving motor (23) in power; the axial driving motor (23) is fixed to the suspension mechanism.

9. The carbon fiber quick repair and reinforcement device for oil and gas pipelines according to claim 1, characterized in that: The tail end of the fixed connecting rod (27) is provided with a second telescopic shaft (26), which is movably connected with the axial movement mechanism (3); when the axial movement mechanism (3) is needed to pull the device to move, the second telescopic shaft (26) is stretched downward, and the axial movement mechanism (3) is attached to the surface of the pipeline; when movement is not needed, the second telescopic shaft (26) is retracted upward; and the second telescopic shaft (26) can also be used to ensure that the device can adapt to the reinforcement requirements of pipelines with different sizes of defects; The walking track (21) is a rubber track or a glued track; compared with a steel track made of pure metal, the walking track (21) has small noise and long service life, and will not cause scratching damage to the surface of the pipeline; The axial driving motor (23) is electrically connected with the power supply through the controller. The number of the axial movement mechanisms (3) is three, which are correspondingly installed with the universal wheels (20), and the three axial movement mechanisms (3) form an included angle of 120°.

10. A method for using the carbon fiber quick repair and reinforcement device for oil and gas pipelines according to claim 1, according to any one of claims 1-9, characterized in that: The carbon fiber fast repair reinforcing device of the gas pipeline is installed on the pipeline (14) to be repaired, the carbon fiber fast repair reinforcing device of the oil and gas pipeline is pulled to the predetermined position of the pipeline (14) to be repaired through the axial movement mechanism (3), the glue in the adhesive storage tank (6) is continuously coated on the surface of the carbon fiber cloth (4) through the ball head dispensing needle (8) on the glue injection pipe (7), the compacting scraper (11) on the chain conveyor (9) continuously adheres the carbon fiber cloth (4) coated with glue to the surface of the pipeline (14) to be repaired under the driving of the motor (10), and the number of windings is determined according to the requirement; after the winding is completed, the carbon fiber cloth (4) is cut by the cutter, and the cutting is completed. If only one place needs to be repaired, the carbon fiber fast repair reinforcing device of the oil and gas pipeline can be removed from the pipeline (14) to be repaired. If the remaining places of the pipeline (14) to be repaired also need to be repaired, the axial movement mechanism (3) is only needed to be lowered through the second telescopic shaft (26), and the axial movement mechanism (3) is walked to the next place for repair.

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