Oil and gas pipeline self-drainage and ultra-low frequency communication emergency repair device

Abstract

The invention belongs to the technical field of pipeline maintenance and first-aid repair, particularly relates to an oil and gas pipeline self-drainage and ultra-low frequency communication emergency first-aid repair device, and aims to solve the problem that a first-aid repair device may have position deviation in a large pipeline mileage. The device comprises a power assembly, an anchoring assembly, a plugging assembly, a communication assembly and a plurality of connecting pieces which are arranged in an oil and gas pipeline; the power assembly, the anchoring assembly, the plugging assembly and the communication assembly are sequentially connected together through the multiple connecting pieces. The oil-gas pipeline comprises a pipeline main body, a ball serving cylinder and a ball receiving cylinder; by adjusting the pressure of a medium in the oil and gas pipeline, the first-aid repair device walks along the pipeline main body under the pushing of the medium. In the oil and gas pipeline, the emergency repair equipment with oil and gas pipeline self-drainage and ultra-low frequency communication functions is pushed by medium pressure, the walking distance is determined by medium pressure difference, and accurate positioning of the repair equipment in the pipeline and the double-train equipment plugging process are determined by leakage modules on a power assembly and a communication assembly of the repair equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline maintenance and emergency repair, specifically relating to an emergency repair device for oil and gas pipelines with self-venting and ultra-low frequency communication. Background Technology

[0002] Oil and gas energy remains an essential part of strategic energy reserves for many countries, and its transportation is an indispensable process. The transportation of crude oil, refined oil products, and natural gas primarily utilizes pipelines, leading to the rapid development of pipeline transportation, especially for refined oil and natural gas pipelines, which are now widely used and numerous. During operation, these pipelines are subject to various unpredictable factors, resulting in localized damage, the need for branch line modifications, or valve assembly repairs. Currently, pipeline repair commonly employs a method of opening and sealing welded tees, but this method is inefficient and costly. After repair, welded tees, rubber auxiliary seal plugs, and blind flanges remain on the pipeline, potentially leading to leaks and subsequent repairs during long-term pipeline operation. In pipeline maintenance and repair operations, the device of this invention first enters the pipeline from the launching device, runs inside the pipeline to the target position that needs to be blocked, and then performs the blocking operation. After the blocking is completed, pipeline repair is carried out, thereby reducing the cost of pipeline emergency repair operations, achieving pipeline repair without repair traces, and improving the pipeline's safe operation indicators. At the same time, it can also realize regional energy recovery of pipeline media, reduce oil and gas resource losses, and ensure normal oil and gas transportation.

[0003] In the prior art, Chinese Patent Publication No. CN115289316A discloses an intelligent maintenance and repair robot and method for small-diameter, low-flow oil and gas pipelines. The intelligent maintenance and repair robot for small-diameter, low-flow oil and gas pipelines consists of a frame, a speed control mechanism, a braking mechanism, an anchoring mechanism, and a sealing mechanism. The speed control mechanism consists of a motor and a rotor, and speed control is achieved by adjusting the discharge flow rate through the rotor. The braking mechanism consists of a brake rubber cylinder and a compression ring II, and braking is achieved by compressing the brake rubber cylinder to expand and rub against the pipe wall. The anchoring mechanism consists of a rubber conical cylinder and slips, and anchoring is achieved by the slips extending and rubbing against the pipe wall. The sealing mechanism consists of a sealing rubber cylinder and a compression ring I, and a hydraulic rod drives the compression ring I to compress the sealing rubber cylinder, causing it to expand and compress the pipe wall to achieve sealing.

[0004] However, the aforementioned robots have shortcomings in the process of sealing off operations, mainly as follows:

[0005] In actual operation, the robot enters the pipe and is controlled by the motor to advance, and in the repair of the oil and gas pipeline with large flow, the motor needs to be closed when the robot stops, and under the pushing action of the fluid in the pipe, the positioning position of the brake of the robot may deviate, and in the process of gradually increasing the pressure difference of the pipeline medium, the robot may be pushed to slide in the pipeline, thereby causing scratches on the inner wall of the pipeline and new damage to the pipeline. SUMMARY

[0006] In order to solve the above problems in the prior art, that is, the position deviation in the pipeline and the scratches on the inner wall of the pipeline when the flow decreases and the pressure difference increases during the positioning of the robot at the operation point, the application provides an oil and gas pipeline self-drainage and ultra-low frequency communication emergency repair device.

[0007] The oil and gas pipeline self-drainage and ultra-low frequency communication emergency repair device disclosed in the application adopts the following technical scheme:

[0008] An oil and gas pipeline self-drainage and ultra-low frequency communication emergency repair device comprises a power assembly, an anchoring assembly, a plugging assembly, an in-pipe communication assembly and a plurality of connecting pieces arranged in an oil and gas pipeline; the plurality of connecting pieces sequentially connect the power assembly, the anchoring assembly, the plugging assembly and the in-pipe communication assembly together; and the power assembly, the anchoring assembly, the plugging assembly and the in-pipe communication assembly are linearly connected.

[0009] The oil and gas pipeline comprises a pipeline main body and a ball launching cylinder and a ball collecting cylinder connected to the pipeline main body, respectively; the ball launching cylinder is connected with a special pressurizing pipeline or a pressurizing pipeline outside the ball launching cylinder and an upstream medium of the in-service main pipeline to realize pressurization.

[0010] By adjusting the medium pressure in the oil and gas pipeline, the linear connection combination of the power assembly, the anchoring assembly and the in-pipe communication assembly walks along the pipeline main body under the pushing action of the medium.

[0011] By adopting the technical scheme, the pipeline main body is a walking section pipeline of the repair device in the oil and gas pipeline, the repair device is sent into the pipeline main body from the launching barrel and walks in the pipeline main body, the in-pipe communication assembly is a train head unit section, the power assembly is a tail unit section, and the medium flow direction in the pipeline main body is the walking direction of the repair device. The in-pipe communication assembly is pushed by the medium as a main traction section, the power assembly, the anchoring assembly and the plugging assembly are passive train sections, and the power assembly, the anchoring assembly and the plugging assembly can walk along the pipeline main body under the pushing of the medium. The power assembly, the anchoring assembly, the plugging assembly and the in-pipe communication assembly are connected into a train-shaped repair device through the connecting pieces between each two sections. The repair device walks in the pipeline main body section in a flow blocking manner, and realizes flow releasing positioning and anchoring in the pipeline main body section. The repair device walks under the pushing of the medium pressure difference in the oil and gas pipeline; the flow releasing, anchoring, setting and unsetting can be realized after the in-pipe instruction is sent; the repair device can be put into hibernation after the in-pipe instruction is sent; the state and data analysis of the man-machine interface of the out-pipe control station can be realized after the in-pipe state information is uploaded. The emergency repair equipment in the oil and gas pipeline is pushed by the medium pressure and has the functions of self-flow releasing and ultra-low frequency communication of the oil and gas pipeline, the walking distance is determined by the medium pressure difference, the anchoring effect is determined by the anchoring assembly, the plugging effect is determined by the plugging assembly, the instruction sending is determined by the out-pipe control unit, the data uploading is determined by the in-pipe communication assembly, the information interaction between the in-pipe and out-pipe is determined by the ultra-low frequency communication unit, and the precise positioning of the repair equipment in the pipeline and the double-train plugging process are determined by the power assembly and the in-pipe communication assembly of the repair equipment.

[0012] Optionally, the power assembly comprises a power outer cylinder, a power plate flange, a power support pipe, a power flow releasing pipe, a power mounting plate, a power driving cylinder and a power flow releasing plate.

[0013] The power outer cylinder is through at both ends; the power plate flange is provided with two and fixedly connected at both ends of the power outer cylinder; the power support pipe is provided with two, and the two power support pipes are fixedly connected on the power plate flanges; the outer wall of the power support pipe is fixedly connected with a plurality of convex rings; when the power assembly is arranged in the oil and gas pipeline, the outer diameter of the convex ring is supported on the inner wall of the oil and gas pipeline; the power flow releasing pipe is arranged in the power outer cylinder, and both ends are fixedly connected with the power plate flanges; the power plate flange is in communication with the power flow releasing pipe; the power driving cylinder is fixedly connected on the power mounting plate; the power flow releasing plate is fixedly connected on the piston rod of the power driving cylinder; the power flow releasing plate slides along the inner wall of the power support pipe under the driving of the piston rod, and the power flow releasing plate is provided with a power flow hole, and the power flow hole is misaligned with the pipe opening of the power flow releasing pipe.

[0014] By adopting the technical scheme, when the repairing device is running, the gap between the power leakage plate and the power plate flange is adjusted, so that there is a pressure difference on both sides of the power assembly, thereby pushing the power assembly in the oil and gas pipeline, and the power assembly is pushed to move the repairing device in the oil and gas pipeline. When it is necessary to stop the repairing device, the gap between the power leakage plate and the power plate flange is adjusted again, so that the pressure on both sides of the power assembly is balanced, and the medium cannot drive the power assembly to move when passing through the power assembly, thereby achieving the deceleration and parking of the repairing device in the oil and gas pipeline.

[0015] Optionally, the anchoring assembly comprises two anchoring support plates, an anchoring hydraulic cylinder mounted between the two anchoring support plates, an anchoring clamp seat fixedly connected to the cylinder body of the anchoring hydraulic cylinder and movable between the two anchoring support plates, a plurality of anchoring slips sleeved on the anchoring clamp seat, and an anchoring spring sleeved on the plurality of anchoring slips; there is a gap between the edge of the anchoring hydraulic cylinder and the inner wall of the oil and gas pipeline; when the anchoring hydraulic cylinder is started, the plurality of anchoring slips are lifted along the radial direction of the anchoring hydraulic cylinder by the anchoring clamp seat driven by the cylinder body of the anchoring hydraulic cylinder to contact the inner wall of the pipeline body; the two ends of the piston rod of the anchoring hydraulic cylinder are fixedly connected to the two anchoring support plates.

[0016] By adopting the technical scheme, after the repairing device moves to the predetermined position in the oil and gas pipeline, the repairing device is parked in the oil and gas pipeline, at this time, the anchoring hydraulic cylinder is started, so that the cylinder body of the anchoring hydraulic cylinder moves between the two anchoring support plates, when the cylinder body of the anchoring hydraulic cylinder moves towards the anchoring support plate with the clamping block, the anchoring clamp seat is pushed to move to the lower side of the anchoring slip, the anchoring slip is arranged between the anchoring clamp seat and the anchoring support plate, and is connected to the anchoring support plate through the radially arranged clamping block and is axially blocked by the anchoring support plate, when the anchoring clamp seat moves to the lower side of the anchoring slip, the plurality of anchoring slips are pushed, the plurality of anchoring slips move away from the piston rod of the anchoring hydraulic cylinder, the diameter of the ring formed by the plurality of anchoring slips is increased, so that the anchoring slip contacts the inner wall of the oil and gas pipeline, the anchoring slip abuts against the inner wall of the oil and gas pipeline and is supported by the anchoring clamp seat, thereby fixing the position of the anchoring assembly in the oil and gas pipeline. When it is necessary to move the anchoring assembly, the anchoring hydraulic cylinder is started again to control the cylinder body of the anchoring hydraulic cylinder to move away from the anchoring support plate with the clamping block, so that the anchoring clamp seat is separated from the lower side of the anchoring slip, the anchoring slip loses the support of the anchoring clamp seat, under the action of the anchoring spring, the plurality of anchoring slips move close to the piston rod of the anchoring hydraulic cylinder, the diameter of the ring formed by the plurality of anchoring slips is reduced, so that the anchoring slip is separated from the inner wall of the oil and gas pipeline, thereby releasing the anchoring of the anchoring assembly to the oil and gas pipeline.

[0017] Optionally, the anchoring clamp seat is a conical ring, the plurality of anchoring slips are annularly sleeved on the conical surface of the anchoring clamp seat, and the surface of the anchoring slip in contact with the anchoring clamp seat is an arc surface.

[0018] By adopting the technical scheme, the anchor clamping base is easier to lift the multiple anchor slips when moving.

[0019] Optionally, the anchor clamping base is provided with arc-shaped grooves, and the arc-shaped grooves are provided with multiple arc-shaped grooves, each of which corresponds to an anchor slip, and a guide groove is arranged in each arc-shaped groove along the length direction of the anchor clamping base, and a dovetail rail is fixedly connected to the anchor slip and slidably connected with the guide groove, and the dovetail rail is embedded in the guide groove.

[0020] By adopting the technical scheme, the dovetail rail and the guide groove are slidably connected, which can guide the cooperation and movement between the anchor clamping base and the anchor slip, so that the anchor slip can only move radially to approach or move away from the piston rod of the anchor hydraulic cylinder, and can also prevent the anchor clamping base and the anchor slip from being misaligned.

[0021] Optionally, the anchor support plate is fixedly connected with multiple clamping blocks, the clamping blocks correspond one-to-one to the anchor slips, and a clamping groove for accommodating the clamping blocks is arranged on the anchor slip, and the clamping blocks and the clamping grooves are arranged along the radial direction of the anchor hydraulic cylinder.

[0022] By adopting the technical scheme, the clamping blocks and the clamping grooves are matched to prevent the multiple anchor slips from rotating.

[0023] Optionally, the anchor slip is provided with an embedding groove for embedding the anchor spring.

[0024] By adopting the technical scheme, the anchor spring is installed in the embedding groove, which can prevent the anchor spring from moving.

[0025] Optionally, the plugging assembly comprises two plugging support plates, a plugging hydraulic cylinder installed between the two plugging support plates, a movable plate fixedly connected to one side of the cylinder body of the plugging hydraulic cylinder, a fixed plate arranged on the other side of the plugging hydraulic cylinder and fixedly connected with the plugging support plate, and a rubber sealing ring arranged between the fixed plate and the movable plate and sleeved on the cylinder body of the plugging hydraulic cylinder; there is a gap between the edge of the plugging hydraulic cylinder and the inner wall of the oil and gas pipeline; when the plugging hydraulic cylinder is started, the rubber sealing ring is extruded and deformed in the direction of the fixed plate by the cylinder body of the plugging hydraulic cylinder to contact the inner wall of the pipeline body; the piston rod of the plugging hydraulic cylinder is fixedly connected with the two plugging support plates.

[0026] By adopting the technical scheme, when the oil and gas pipeline needs to be plugged, the plugging hydraulic cylinder is started to drive the movable plate to approach the fixed plate, the rubber sealing ring between the fixed plate and the movable plate is extruded when the movable plate approaches the fixed plate, the rubber sealing ring is deformed, the rubber sealing ring is blocked in the axial direction by the fixed plate, the rubber sealing ring can only be deformed in the radial direction, the rubber sealing ring is in contact with the inner wall of the oil and gas pipeline and is supported by the movable plate and the fixed plate, and the rubber sealing ring is continuously close to the inner wall of the oil and gas pipeline to plug the medium in the oil and gas pipeline. When the plugging assembly needs to be unplugged, the plugging hydraulic cylinder is started to drive the movable plate to move away from the fixed plate, the extrusion of the rubber sealing ring between the fixed plate and the movable plate is released when the movable plate moves away from the fixed plate, the rubber sealing ring returns to the original state under the action of the elastic force of the rubber sealing ring, and then the rubber sealing ring is separated from the inner wall of the oil and gas pipeline to release the plugging of the oil and gas pipeline by the plugging assembly.

[0027] Optionally, the in-pipe communication assembly comprises a communication outer cylinder, a communication flange plate, a communication support pipe, a communication drainage pipe, a communication mounting plate, a communication drive cylinder and a communication drainage plate.

[0028] The communication outer cylinder is through at both ends; the communication flange plate is provided with two and is fixedly connected at both ends of the communication outer cylinder; the communication support pipe is provided with two, and the two communication support pipes are fixedly connected on the communication flange plate; the outer wall of the communication support pipe is fixedly connected with a plurality of convex rings; when the in-pipe communication assembly is arranged in the oil and gas pipeline, the outer diameter of the convex ring is supported on the inner wall of the oil and gas pipeline; the communication drainage pipe is arranged in the communication outer cylinder, and both ends are fixedly connected with the communication flange plate; the communication flange plate is in communication with the communication drainage pipe; the communication drive cylinder is fixedly connected on the communication mounting plate; the communication drainage plate is fixedly connected on the piston rod of the communication drive cylinder; the communication drainage plate slides along the inner wall of the communication support pipe under the driving of the piston rod, and the communication drainage plate is provided with a communication overflow hole, and the communication overflow hole is dislocated with the pipe opening of the communication drainage pipe.

[0029] The communication outer cylinder is provided with an in-pipe power supply, an in-pipe low-frequency processor and a transceiving antenna assembly; the in-pipe power supply, the in-pipe low-frequency processor and the transceiving antenna assembly adopt cable communication or Bluetooth communication with the power assembly, the anchoring assembly and the plugging assembly.

[0030] The oil and gas pipeline is provided with an out-of-pipe communication unit outside; the out-of-pipe communication unit and the in-pipe communication assembly are in ultra-low frequency communication information interaction.

[0031] By adopting the technical scheme, when the repairing device is running, the gap between the communication flow leakage plate and the communication plate flange is adjusted, so that a pressure difference exists on both sides of the in-pipe communication assembly, thereby pushing the in-pipe communication assembly in the oil and gas pipeline, and the in-pipe communication assembly is pushed to move the repairing device in the oil and gas pipeline. When it is necessary to stop the repairing device, the gap between the communication flow leakage plate and the communication plate flange is adjusted again, so that the pressure on both sides of the in-pipe communication assembly is balanced, and the in-pipe communication assembly cannot be moved when the medium passes through the in-pipe communication assembly, thereby achieving the parking of the repairing device in the oil and gas pipeline.

[0032] The communication assembly realizes information interaction between the inside and outside of the pipe, controls the vehicle head communication driving cylinder and the vehicle tail power driving cylinder to adjust the pressure on both sides of the repairing device in the oil and gas pipeline, and controls the start and stop of the repairing device in the oil and gas pipeline. After the repairing device is parked, an ultralow frequency signal is sent from the out-of-pipe communication unit to the in-pipe communication assembly, the signal is an anchoring instruction, the in-pipe communication assembly sends the instruction to the anchoring assembly, the anchoring assembly is provided with an anchoring slip ring, the anchoring slip ring contacts the inner wall of the oil and gas pipeline to realize anchoring, so that the displacement of the repairing device is not caused by the medium pushing force of the oil and gas pipeline after the plugging assembly is plugged. After the plugging assembly receives the setting instruction, an ultralow frequency signal is sent from the out-of-pipe communication unit to the in-pipe communication assembly, the signal is a plugging instruction, the in-pipe communication assembly sends the instruction to the plugging assembly, the plugging assembly executes the setting instruction, the plugging assembly is provided with a rubber sealing ring, and the rubber sealing ring contacts the inner wall of the pipe to realize the blocking sealing of the medium in the oil and gas pipeline.

[0033] Optionally, the connecting piece comprises a first connecting head, a second connecting head, and a pin shaft connecting the first connecting head and the second connecting head.

[0034] By adopting the technical scheme, the connecting piece is between the power assembly and the anchoring assembly, the first connecting head is fixedly connected with the power support pipe of the power assembly, and the second connecting head is fixedly connected with the anchoring support plate of the anchoring assembly, so that the connecting piece connects the power assembly and the anchoring assembly together.

[0035] The connecting piece is between the anchoring assembly and the plugging assembly, the first connecting head is fixedly connected with the anchoring support plate of the anchoring assembly, and the second connecting head is fixedly connected with the plugging support plate of the plugging assembly, so that the connecting piece connects the anchoring assembly and the plugging assembly together.

[0036] The connecting piece is between the plugging assembly and the in-pipe communication assembly, the first connecting head is fixedly connected with the plugging support plate of the plugging assembly, and the second connecting head is fixedly connected with the communication support pipe of the in-pipe communication assembly, so that the connecting piece connects the plugging assembly and the in-pipe communication assembly together.

[0037] Under the action of the connector, the power assembly, the anchoring assembly, the plugging assembly and the in-pipe communication assembly are connected in sequence, and the power assembly, the anchoring assembly, the plugging assembly and the in-pipe communication assembly are linearly connected.

[0038] The application has the advantages that the repair device is pushed to move in the oil and gas pipeline under the medium pressure difference force, direct power is avoided to be arranged on the repair device, and the movement, anchoring and plugging of the repair device are convenient to control. BRIEF DESCRIPTION OF DRAWINGS

[0039] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the following drawings:

[0040] Figure 1 It is a schematic view of the repair device in the embodiment moving to different positions in the oil and gas pipeline;

[0041] Figure 2 It is a schematic view of the repair device in the embodiment working in the pipeline body;

[0042] Figure 3 It is a schematic view of the repair device in the embodiment;

[0043] Figure 4 It is a schematic view of the power assembly in the embodiment;

[0044] Figure 5 It is a structural schematic view of the power assembly in the embodiment;

[0045] Figure 6 It is a schematic view of the anchoring assembly in the embodiment;

[0046] Figure 7 It is a structural schematic view of the anchoring assembly in the embodiment;

[0047] Figure 8 It is a schematic view of the plugging assembly in the embodiment;

[0048] Figure 9 It is a structural schematic view of the plugging assembly in the embodiment;

[0049] Figure 10 It is a schematic view of the in-pipe communication assembly in the embodiment;

[0050] Figure 11 It is a structural schematic view of the in-pipe communication assembly in the embodiment.

[0051] Explanation of reference signs: 1, oil and gas pipeline; 11, pipeline main body; 12, launching cylinder; 13, receiving cylinder; 2, power assembly; 21, power outer cylinder; 22, power plate flange; 23, power support pipe; 24, power discharge pipeline; 25, power mounting plate; 26, power drive cylinder; 27, power discharge plate; 28, power anti-collision head; 3, anchoring assembly; 31, anchoring support plate; 32, anchoring hydraulic cylinder; 33, anchoring clamp seat; 34, anchoring slip; 35, arc-shaped groove; 36, anchoring spring; 37, clamping block; 4, plugging assembly; 41, plugging support plate; 42, plugging hydraulic cylinder; 43, movable plate; 44, fixed plate; 45, rubber sealing ring; 5, in-pipeline communication assembly; 51, communication outer cylinder; 52, communication plate flange; 53, communication support pipe; 54, communication discharge pipeline; 55, communication mounting plate; 56, communication drive cylinder; 57, communication discharge plate; 58, communication anti-collision head; 6, connecting piece; 7, out-of-pipeline communication unit. DETAILED DESCRIPTION

[0052] The application will be further described below in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and are not a limitation on the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0053] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0054] Reference Figures 1-3 The present application provides an oil and gas pipeline self-discharge and ultra-low frequency communication emergency repair device. The oil and gas pipeline self-discharge and ultra-low frequency communication emergency repair device comprises a power assembly 2, an anchoring assembly 3, a plugging assembly 4, an in-pipeline communication assembly 5 and a plurality of connecting pieces 6 arranged in an oil and gas pipeline 1. The plurality of connecting pieces 6 connect the power assembly 2, the anchoring assembly 3, the plugging assembly 4 and the in-pipeline communication assembly 5 in sequence.

[0055] The oil and gas pipeline 1 comprises a pipeline main body 11 and a launching cylinder 12 and a receiving cylinder 13 connected to the front end and the rear end of the pipeline main body 11, respectively. The launching cylinder 12 is connected to the pipeline main body 11 through a flange, and a special pressurizing pipeline is connected on the launching cylinder 12 or a pressurizing pipeline outside the launching cylinder 12 is in communication with the medium upstream of the in-service main pipeline to realize pressurization.

[0056] The main pipeline 11 is the section of the pipeline through which the emergency repair device travels within the oil and gas pipeline 1. The emergency repair device is launched into the main pipeline 11 from the launch tube 12 and travels within it. The internal communication component 5 acts as the head unit, and the power component 2 acts as the tail unit. The flow direction of the medium within the main pipeline 11 is the direction of travel for the emergency repair device. The medium propels the internal communication component 5 as the main traction unit, while the power component 2, anchoring component 3, and sealing component 4 are the passive train sections. Driven by the medium, the power component 2, anchoring component 3, and sealing component 4 can travel along the main pipeline 11. Each section of the power component 2, anchoring component 3, sealing component 4, and internal communication component 5 is connected in pairs via connectors 6 to form a train-like emergency repair device. The emergency repair device travels through the main pipeline 11, obstructing the flow and achieving drainage positioning and anchoring within the main pipeline 11.

[0057] The ball receiving cylinder 13 is connected to the pipeline body 11 via a flange. After the emergency repair device completes the repair, it enters the ball receiving cylinder 13 for further maintenance. During the pressurization and venting processes, a medium is always present in the oil and gas pipeline 1. The medium can be natural gas, refined oil, crude oil, etc.

[0058] Reference Figure 4 , Figure 5 The power assembly 2 includes a power outer cylinder 21, a power plate flange 22, a power support pipe 23, a power venting pipe 24, a power mounting plate 25, a power drive cylinder 26, a power venting plate 27, and a power anti-collision head 28. The power outer cylinder 21 is open at both ends. Two power plate flanges 22 are provided, fixedly connected to both ends of the power outer cylinder 21, sealing both ends. Two power support pipes 23 are provided, each fixedly connected to a power plate flange 22, with the end face of the power support pipe 23 fixedly connected to the plate face of the power plate flange 22. Multiple raised rings are fixedly connected to the outer wall of the power support pipe 23, arranged concentrically with the power support pipe 23. The raised rings are the main support pipes of the power support pipe 23. The convex ring is made of PU material. When the power assembly 2 is arranged in the oil and gas pipeline 1, the outer diameter of the convex ring supports the inner wall of the oil and gas pipeline 1, providing circumferential support for the power assembly 2. Its annular shape also helps to block the medium in the oil and gas pipeline 1. Under the pressure of the medium in the oil and gas pipeline 1, the power support pipe 23 acts as the force-bearing surface of the power assembly 2, generating thrust and thus propelling the power assembly 2 to move within the oil and gas pipeline 1. The power outer cylinder 21, the power plate flange 22, and the power support pipe 23 are arranged concentrically.

[0059] The power drainage pipe 24 is arranged in the power outer cylinder 21, and both ends are fixedly connected with the power plate flange 22. The power plate flange 22 is in communication with the power drainage pipe 24, so that the power drainage pipe 24 can serve as a medium drainage passage. When the power drainage pipe 24 is closed, the medium pushes the power assembly 2 to move in the oil and gas pipeline 1. When the power drainage pipe 24 is opened, the medium is drained, so that the thrust acting on the power assembly 2 gradually decreases until the power assembly 2 cannot be pushed, so that the power assembly 2 stops in the oil and gas pipeline 1. The power mounting plate 25 is fixedly connected with the power plate flange 22. In this embodiment, the power mounting plate 25 is fixedly connected with a power support pipe 23 and indirectly fixedly connected with the power plate flange 22. The power drive cylinder 26 is selected from an oil cylinder, and the power drive cylinder 26 is fixedly connected with the power mounting plate 25. The piston rod of the power drive cylinder 26 is directed to one of the power plate flanges 22.

[0060] The power drainage plate 27 is fixedly connected with the piston rod of the power drive cylinder 26, and the power drainage plate 27 is arranged in the power support pipe 23. The edge of the power drainage plate 27 is in contact with the inner wall of the power support pipe 23. The power drainage plate 27 slides along the inner wall of the power support pipe 23 under the driving of the piston rod. The power drainage plate 27 is provided with a power flow hole. The power flow hole is misaligned with the pipe opening of the power drainage pipe 24. When the power drainage plate 27 is in contact with the power plate flange 22, the power drainage pipe 24 is closed to form a blind hole flow resistance. When the power drainage plate 27 is separated from the power plate flange 22, the power drainage pipe 24 is in communication with the power flow hole, so that the oil and gas pipeline 1 is in communication at both ends, thereby enabling the medium to smoothly pass through the power assembly 2.

[0061] The power anti-collision head 28 is fixedly connected with the other power plate flange 22, and a gap exists between the power anti-collision head 28 and the power support pipe 23. The power anti-collision head 28 and the power drainage plate 27 are arranged in different power support pipes 23. The gap between the power anti-collision head 28 and the power support pipe 23 exposes the pipe opening of the power drainage pipe 24, so that the medium can pass through the power anti-collision head 28 and enter the power drainage pipe 24.

[0062] When the repair device is running, the gap between the power drainage plate 27 and the power plate flange 22 is adjusted, so that there is a pressure difference on both sides of the power assembly 2, thereby pushing the power assembly 2 in the oil and gas pipeline 1 to move the repair device in the oil and gas pipeline 1. When it is necessary to stop the repair device, the gap between the power drainage plate 27 and the power plate flange 22 can be adjusted again, so that the pressure on both sides of the power assembly 2 is balanced, and the medium cannot drive the power assembly 2 to move when passing through the power assembly 2, thereby achieving the parking of the repair device in the oil and gas pipeline 1.

[0063] Reference Figure 6 ,Figure 7 The anchoring assembly 3 comprises two anchoring support plates 31, between which an anchoring hydraulic cylinder 32 is installed, and the two anchoring support plates 31 are fixedly connected with the two ends of the piston rod of the anchoring hydraulic cylinder 32. Since the piston rod of the anchoring hydraulic cylinder 32 is fixedly connected with the two anchoring support plates 31, the distance between the two anchoring support plates 31 is constant, and when the anchoring hydraulic cylinder 32 is started, the piston rod of the anchoring hydraulic cylinder 32 pushes the cylinder body of the anchoring hydraulic cylinder 32 to move between the two anchoring support plates 31. When the anchoring assembly 3 is arranged in the oil and gas pipeline 1, the edges of the anchoring support plates 31 are in contact with the inner wall of the oil and gas pipeline 1 to support the anchoring assembly 3. Moreover, channels for the medium to pass through are formed on the anchoring support plates 31, for example, holes are formed on the anchoring support plates 31 or grooves are formed at the edges of the anchoring support plates 31. The anchoring hydraulic cylinder 32 is installed between the two anchoring support plates 31, and there is a gap between the edges of the anchoring hydraulic cylinder 32 and the inner wall of the oil and gas pipeline 1 for the medium to pass through. The anchoring hydraulic cylinder 32 is fixedly connected with an anchoring collet 33 on the cylinder body of the anchoring hydraulic cylinder 32, the anchoring collet 33 is a conical ring, one side of the ring surface is a plane, and the other side is a conical surface, and the plane side of the anchoring collet 33 is fixedly connected with the cylinder body of the anchoring hydraulic cylinder 32. The anchoring collet 33, the anchoring hydraulic cylinder 32 and the anchoring support plates 31 are concentrically arranged. A plurality of anchoring slips 34 are installed between the two anchoring support plates 31, the plurality of anchoring slips 34 are annularly arranged on the conical surface of the anchoring collet 33, and the anchoring slips 34 are arranged between the anchoring collet 33 and one of the anchoring support plates 31. The surface of the anchoring slip 34 in contact with the anchoring collet 33 is an arc surface, so that the surface of the anchoring slip 34 in contact with the anchoring collet 33 is fitted. Arc-shaped grooves 35 are formed on the anchoring collet 33, the arc-shaped grooves 35 are provided in plurality, each arc-shaped groove 35 corresponds to one anchoring slip 34, a guide groove arranged along the length direction of the anchoring collet 33 is formed in the arc-shaped groove 35, and a dovetail rail fixedly connected with the guide groove is arranged on the anchoring slip 34, and the dovetail rail is embedded in the guide groove.

[0064] Anchoring springs 36 are sleeved on the plurality of anchoring slips 34, the anchoring springs 36 are annular, and the plurality of anchoring slips 34 are sleeved together. In this embodiment, two anchoring springs 36 are sleeved on the plurality of anchoring slips 34, and embedding grooves for the anchoring springs 36 to be embedded are formed on the anchoring slips 34. In addition, a plurality of clamping blocks 37 are fixedly connected with one of the anchoring support plates 31, the clamping blocks 37 correspond to the anchoring slips 34 one by one, and clamping grooves for accommodating the clamping blocks 37 are formed on the anchoring slips 34, and the clamping blocks 37 and the clamping grooves are arranged along the radial direction of the anchoring hydraulic cylinder 32.

[0065] After the repair device moves to the predetermined position in the oil and gas pipeline 1, the repair device stops in the oil and gas pipeline 1, at this time, the anchoring hydraulic cylinder 32 is started, so that the cylinder body of the anchoring hydraulic cylinder 32 moves between the two anchoring support plates 31, when the cylinder body of the anchoring hydraulic cylinder 32 moves towards the anchoring support plate 31 with the clamping block 37, the anchoring clamping seat 33 is pushed, driving the anchoring clamping seat 33 to move to the lower side of the anchoring slips 34, the anchoring slips 34 are arranged between the anchoring clamping seat 33 and the anchoring support plate 31, and are connected with the anchoring support plate 31 through the radially arranged clamping block 37, and are axially blocked by the anchoring support plate 31, when the anchoring clamping seat 33 moves to the lower side of the anchoring slips 34, the plurality of anchoring slips 34 are pushed, the plurality of anchoring slips 34 are away from the piston rod of the anchoring hydraulic cylinder 32, the diameter of the ring formed by the plurality of anchoring slips 34 is increased, so that the anchoring slips 34 are in contact with the inner wall of the oil and gas pipeline 1, the anchoring slips 34 are tightly contacted with the inner wall of the oil and gas pipeline 1 and are supported by the anchoring clamping seat 33, so as to fix the position of the anchoring assembly 3 in the oil and gas pipeline 1. When it is needed to move the anchoring assembly 3, the anchoring hydraulic cylinder 32 is started again, the cylinder body of the anchoring hydraulic cylinder 32 is controlled to move away from the anchoring support plate 31 with the clamping block 37, driving the anchoring clamping seat 33 to move out from the lower side of the anchoring slips 34, the anchoring slips 34 lose the support of the anchoring clamping seat 33, under the action of the anchoring spring 36, the plurality of anchoring slips 34 are close to the piston rod of the anchoring hydraulic cylinder 32, the diameter of the ring formed by the plurality of anchoring slips 34 is reduced, so that the anchoring slips 34 are separated from the inner wall of the oil and gas pipeline 1, so as to release the anchoring of the anchoring assembly 3 and the oil and gas pipeline 1. In the process that the plurality of anchoring slips 34 are in contact with the inner wall of the oil and gas pipeline 1, the gap between the adjacent anchoring slips 34 is increased to allow the medium to pass through, so as to avoid blocking the medium.

[0066] Wherein, the dovetail rail is in sliding cooperation with the guide groove, the clamping cooperation between the clamping block 37 and the clamping groove can guide the cooperation and movement between the anchoring clamping seat 33 and the anchoring slip 34, so that the anchoring slip 34 can only move radially close to or away from the piston rod of the anchoring hydraulic cylinder 32, and can also prevent the anchoring clamping seat 33 and the anchoring slip 34 from being dislocated. The anchoring spring 36 is sleeved on the plurality of anchoring slips 34, and can also prevent the anchoring slip 34 from being separated from the anchoring clamping seat 33 in addition to the resetting action of the anchoring slip 34.

[0067] Reference Figure 8 , Figure 9The blocking assembly 4 comprises two blocking support plates 41, a blocking hydraulic cylinder 42 is installed between the two blocking support plates 41, and the two blocking support plates 41 are fixedly connected with both ends of the piston rod of the blocking hydraulic cylinder 42. Since the piston rod of the blocking hydraulic cylinder 42 is fixedly connected with the two blocking support plates 41, the distance between the two blocking support plates 41 is constant. When the blocking hydraulic cylinder 42 is started, the piston rod of the blocking hydraulic cylinder 42 pushes the cylinder body of the blocking hydraulic cylinder 42 to move between the two blocking support plates 41. When the blocking assembly 4 is arranged in the oil and gas pipeline 1, the edges of the blocking support plates 41 are in contact with the inner wall of the oil and gas pipeline 1 to support the blocking assembly 4. Moreover, channels for the medium to pass through are formed on the blocking support plates 41, for example, holes are formed on the blocking support plates 41 or grooves are formed at the edges of the blocking support plates 41. The blocking hydraulic cylinder 42 is installed between the two blocking support plates 41, and there is a gap between the edges of the blocking hydraulic cylinder 42 and the inner wall of the oil and gas pipeline 1 to allow the medium to pass through. An activity plate 43 is fixedly connected with one side of the cylinder body of the blocking hydraulic cylinder 42. When the blocking hydraulic cylinder 42 is started, the cylinder body of the blocking hydraulic cylinder 42 drives the activity plate 43 to move between the two blocking support plates 41. The activity plate 43 is sleeved on the piston rod of the blocking hydraulic cylinder 42. A fixed plate 44 is arranged on the side of the blocking hydraulic cylinder 42 away from the activity plate 43, the fixed plate 44 is fixedly connected with the blocking support plates 41, and a rubber sealing ring 45 is arranged between the fixed plate 44 and the activity plate 43, and the rubber sealing ring 45 is sleeved on the cylinder body of the blocking hydraulic cylinder 42. The fixed plate 44 is also sleeved on the piston rod of the blocking hydraulic cylinder 42.

[0068] When it is necessary to block the oil and gas pipeline 1, the blocking hydraulic cylinder 42 is started to drive the activity plate 43 to approach the fixed plate 44. When the activity plate 43 approaches the fixed plate 44, the rubber sealing ring 45 between the fixed plate 44 and the activity plate 43 is extruded to deform, and the rubber sealing ring 45 is blocked in the axial direction by the fixed plate 44, so that the rubber sealing ring 45 can only deform in the radial direction. Therefore, the rubber sealing ring 45 is in contact with the inner wall of the oil and gas pipeline 1 and is supported by the activity plate 43 and the fixed plate 44 to continuously adhere to the inner wall of the oil and gas pipeline 1 to block the medium in the oil and gas pipeline 1. When it is necessary to remove the blocking of the oil and gas pipeline 1 by the blocking assembly 4, the blocking hydraulic cylinder 42 is started to drive the activity plate 43 to move away from the fixed plate 44. When the activity plate 43 moves away from the fixed plate 44, the extrusion of the rubber sealing ring 45 between the fixed plate 44 and the activity plate 43 is removed, and the rubber sealing ring 45 returns to the original state under the elastic force of itself, so that the rubber sealing ring 45 is separated from the inner wall of the oil and gas pipeline 1 to remove the blocking of the oil and gas pipeline 1 by the blocking assembly 4.

[0069] Referring to Figure 10 , Figure 11The in-pipe communication assembly 5 comprises a communication outer cylinder 51, a communication plate flange 52, a communication support pipe 53, a communication drainage pipe 54, a communication mounting plate 55, a communication drive cylinder 56, a communication drainage plate 57, and a communication anti-collision head 58. The communication outer cylinder 51 is through at both ends. An in-pipe power supply, an in-pipe low-frequency processor, and a transceiving antenna assembly are installed in the communication outer cylinder 51. The in-pipe low-frequency processor has the functions of processing signals received by the transceiving antenna assembly and transmitting signals through the transceiving antenna assembly. The in-pipe low-frequency processor is a processor for filtering, interpreting, and forming instruction codes of signals outside the pipe. The in-pipe low-frequency processor is a processor for transmitting sensor information processed in the pipe. The in-pipe low-frequency processor has the functions of receiving and transmitting ultra-low-frequency signals in the pipe. The in-pipe power supply is a power supply guarantee system of the in-pipe communication assembly 5. The in-pipe power supply has power consumption management functions, hibernation, wake-up, dual power supply guarantee combination modes, and fault warning modes. The in-pipe power supply, the in-pipe low-frequency processor, and the transceiving antenna assembly use cable communication or Bluetooth communication with the power drive cylinder 26 of the power assembly 2, the anchoring hydraulic cylinder 32 of the anchoring assembly 3, and the plugging hydraulic cylinder 42 of the plugging assembly 4. An out-pipe communication unit 7 is installed outside the oil and gas pipeline 1. The out-pipe communication unit 7 is arranged at a set distance, such as 50 kilometers away from the oil and gas pipeline 1. An out-pipe communication unit 7 is arranged every 5 kilometers along the way. When the in-pipe communication assembly 5 passes through the out-pipe communication unit 7 along the way, the out-pipe communication unit 7 can receive the signals transmitted by the in-pipe communication assembly 5. Because the out-pipe communication unit 7 is arranged outside the pipe, the out-pipe communication units 7 communicate with each other through point-to-point networking to transmit information to the central control station. Before the repair device is launched in the launching cylinder 12, the in-pipe communication assembly 5 in the launching cylinder 12 and the out-pipe communication unit 7 exchange ultra-low-frequency communication information. The real-time state information of the repair device is determined on the man-machine interaction interface of the out-pipe control station. After the medium in the launching cylinder 12 is pressurized, it is determined whether the repair device effectively leaves the launching cylinder 12 through the out-pipe communication unit 7. The out-pipe communication unit 7 is arranged at a position that matches the corresponding repair device in the oil and gas pipeline 1 in the process of walking, positioning, anchoring, plugging, and returning to the receiving cylinder 13 and acts on the information interaction inside and outside the pipe. The communication plate flange 52 is provided with two communication plate flanges 52 fixedly connected at both ends of the communication outer cylinder 51 to close both ends of the communication outer cylinder 51. The communication support pipe 53 is provided with two communication support pipes 53 fixedly connected to the communication plate flanges 52, respectively. The end surface of the communication support pipe 53 is fixedly connected to the plate surface of the communication plate flange 52. The outer wall of the communication support pipe 53 is fixedly connected with a plurality of convex rings concentrically arranged with the communication support pipe 53. The convex ring is the main support pipe of the communication support pipe 53. The convex ring is made of PU material. When the in-pipe communication assembly 5 is arranged in the oil and gas pipeline 1, the outer diameter of the convex ring is supported on the inner wall of the oil and gas pipeline 1, which plays a circumferential supporting role for the in-pipe communication assembly 5 in the oil and gas pipeline 1 and is arranged in a ring shape to block the medium in the oil and gas pipeline 1.The communication support pipe 53 generates thrust under the action of the medium pressure in the oil and gas pipeline 1 as the force surface of the in-pipe communication assembly 5, and further pushes the in-pipe communication assembly 5 to walk in the oil and gas pipeline 1. The communication outer cylinder 51, the communication plate flange 52 and the communication support pipe 53 are concentrically arranged. The communication bleed pipe 54 is arranged in the communication outer cylinder 51 and fixedly connected with the communication plate flange 52 at both ends. The communication plate flange 52 is in communication with the communication bleed pipe 54, so that the communication bleed pipe 54 can serve as a medium bleed channel. When the communication bleed pipe 54 is closed, the medium pushes the in-pipe communication assembly 5 to walk in the oil and gas pipeline 1. When the communication bleed pipe 54 is opened, the medium bleeds, so that the thrust acting on the in-pipe communication assembly 5 gradually decreases until the in-pipe communication assembly 5 cannot be pushed, so that the in-pipe communication assembly 5 stops in the oil and gas pipeline 1. The communication mounting plate 55 is fixedly connected to the communication plate flange 52. In this embodiment, the communication mounting plate 55 is fixedly connected to one communication support pipe 53 and indirectly fixedly connected to the communication plate flange 52. The communication drive cylinder 56 is selected from an oil cylinder, and the communication drive cylinder 56 is fixedly connected to the communication mounting plate 55. The piston rod of the communication drive cylinder 56 is directed to one communication plate flange 52.

[0070] The communication bleed plate 57 is fixedly connected to the piston rod of the communication drive cylinder 56 and arranged in the communication support pipe 53. The edge of the communication bleed plate 57 is in contact with the inner wall of the communication support pipe 53. The communication bleed plate 57 slides along the inner wall of the communication support pipe 53 under the driving of the piston rod. The communication bleed plate 57 is also provided with a communication overflow hole. The communication overflow hole is offset from the pipe opening of the communication bleed pipe 54. When the communication bleed plate 57 is in contact with the communication plate flange 52, the communication bleed pipe 54 is closed to form a blind hole flow blocking effect. When the communication bleed plate 57 is separated from the communication plate flange 52, the communication bleed pipe 54 is in communication with the communication overflow hole, so that the oil and gas pipeline 1 is in communication at both ends, thereby enabling the medium to smoothly pass through the in-pipe communication assembly 5. The communication anti-collision head 58 is fixedly connected to the other communication plate flange 52 and has a gap with the communication support pipe 53. The communication anti-collision head 58 and the communication bleed plate 57 are arranged in different communication support pipes 53. The gap between the communication anti-collision head 58 and the communication support pipe 53 exposes the pipe opening of the communication bleed pipe 54, so that the medium can enter the communication bleed pipe 54 through the communication anti-collision head 58.

[0071] When the repair device is running, the gap between the communication flow plate 57 and the communication plate flange 52 is adjusted, so that there is a pressure difference of the medium on both sides of the in-pipe communication assembly 5, thereby pushing the in-pipe communication assembly 5 in the oil and gas pipeline 1, and realizing the movement of the repair device in the oil and gas pipeline 1. When it is necessary to stop the repair device, the gap between the communication flow plate 57 and the communication plate flange 52 can be adjusted again, so that the pressure of the medium on both sides of the in-pipe communication assembly 5 is balanced, and the medium cannot move the in-pipe communication assembly 5 when passing through the in-pipe communication assembly 5, thereby realizing the parking of the repair device in the oil and gas pipeline 1.

[0072] The in-pipe communication assembly 5 controls the communication driving cylinder 56 and the power driving cylinder 26 to adjust the pressure on both sides of the repair device in the oil and gas pipeline 1, and controls the start and stop of the repair device in the oil and gas pipeline 1. After the repair device is parked, the in-pipe communication assembly 5 sends an ultra-low frequency signal to the in-pipe communication assembly 5 through the out-of-pipe communication unit 7, which is an anchoring instruction. The in-pipe communication assembly 5 issues the instruction to the anchoring assembly 3, which has an anchoring slip 34 in contact with the inner wall of the oil and gas pipeline 1 to realize anchoring, thereby resisting the displacement of the repair device under the medium thrust of the oil and gas pipeline 1 after the plugging assembly 4 is plugged. When the plugging assembly 4 receives the setting instruction, the in-pipe communication assembly 5 sends an ultra-low frequency signal to the in-pipe communication assembly 5 through the out-of-pipe communication unit 7, which is a plugging instruction. The in-pipe communication assembly 5 issues the instruction to the plugging assembly 4, and the plugging assembly 4 executes the setting instruction. The plugging assembly 4 has a rubber sealing ring 45 in contact with the inner wall of the oil and gas pipeline 1 to realize the blocking seal of the medium in the oil and gas pipeline 1.

[0073] The connecting piece 6 includes a first connecting head, a second connecting head, and a pin shaft connecting the first connecting head and the second connecting head together. The connecting piece is between the power assembly 2 and the anchoring assembly 3, the first connecting head is fixedly connected with the power support pipe 23 of the power assembly 2, and the second connecting head is fixedly connected with the anchoring support plate 31 of the anchoring assembly 3, so that the connecting piece 6 connects the power assembly 2 and the anchoring assembly 3 together. The connecting piece 6 is between the anchoring assembly 3 and the plugging assembly 4, the first connecting head is fixedly connected with the anchoring support plate 31 of the anchoring assembly 3, and the second connecting head is fixedly connected with the plugging support plate 41 of the plugging assembly 4, so that the connecting piece 6 connects the anchoring assembly 3 and the plugging assembly 4 together. The connecting piece 6 is between the plugging assembly 4 and the in-pipe communication assembly 5, the first connecting head is fixedly connected with the plugging support plate 41 of the plugging assembly 4, and the second connecting head is fixedly connected with the communication support pipe 53 of the in-pipe communication assembly 5, so that the connecting piece 6 connects the plugging assembly 4 and the in-pipe communication assembly 5 together. Under the action of the connecting head, the power assembly 2, the anchoring assembly 3, the plugging assembly 4 and the in-pipe communication assembly 5 are connected in sequence, and the power assembly 2, the anchoring assembly 3, the plugging assembly 4 and the in-pipe communication assembly 5 are linearly connected. The power anti-collision head 28 and the communication anti-collision head 58 are arranged at both ends of the repair device.

[0074] The oil and gas pipeline self-drainage and ultra-low frequency communication emergency repair device disclosed by the embodiments of the application walks under the medium pressure difference force pushing in the oil and gas pipeline 1; the drain, anchoring and plugging can be realized after the external command is issued; the setting, unsetting can be realized after the external command is issued; the electric control hibernation can be realized after the external command is issued; the state and data analysis of the man-machine interface of the external control station can be realized after the internal state information is uploaded.

[0075] The two repair devices are respectively sent out in the sending cylinder 12, the first repair device is positioned and anchored after being sent out first, and waits for the second repair device to be sent out subsequently to the anchoring position or the first repair device is sent out first and forms an effective interval with the second repair device, and then walks simultaneously; the first repair device is sent out by the sending cylinder 12, positioned and anchored after being sent out, and waits for the second repair device to be sent out in the pipeline main body 11 section to the sending cylinder 12 to walk to the anchoring position.

[0076] The second walking mode can also be provided with a pressurizing device on the receiving cylinder 13, and one repair device is respectively arranged in the receiving cylinder 13 and the sending cylinder 12, and the two repair devices walk towards each other.

[0077] In addition, the first repair device can be adjusted to walk at a certain speed after walking for a distance, and the second repair device can be adjusted to walk at a higher speed, so that the two repair devices walk towards each other while walking.

[0078] The term "comprising" or any other similar word is intended to cover non-exclusive inclusion, so that the process, method, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to the process, method, article or equipment / device.

[0079] So far, the technical solutions of the application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the application, and the technical solutions after the changes or replacements will fall within the protection scope of the application.

Claims

1. An emergency repair device for oil and gas pipelines with self-venting and ultra-low frequency communication, characterized in that: It includes a power assembly (2), an anchoring assembly (3), a sealing assembly (4), an in-pipe communication assembly (5), and multiple connectors (6) arranged in the oil and gas pipeline (1); the multiple connectors (6) connect the power assembly (2), the anchoring assembly (3), the sealing assembly (4), and the in-pipe communication assembly (5) in sequence; and the power assembly (2), the anchoring assembly (3), the sealing assembly (4), and the in-pipe communication assembly (5) are connected in a linear manner; The oil and gas pipeline (1) includes a pipeline body (11) and a launching tube (12) and a receiving tube (13) respectively connected to the pipeline body (11); the launching tube (12) is connected to a dedicated pressurization pipeline or a pressurization pipeline outside the launching tube (12) is connected to the upstream medium of the in-service main pipeline to achieve pressurization; By adjusting the medium pressure inside the oil and gas pipeline (1), the linear connection assembly of the power component (2), anchoring component (3), sealing component (4), and in-pipe communication component (5) moves along the main body of the pipeline under the push of the medium.

2. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 1, characterized in that: The power assembly (2) includes a power outer cylinder (21), a power plate flange (22), a power support pipe (23), a power discharge pipe (24), a power mounting plate (25), a power drive cylinder (26), and a power discharge plate (27); The power outer cylinder (21) is open at both ends; two power plate flanges (22) are provided and fixedly connected to both ends of the power outer cylinder (21); two power support pipes (23) are provided, and the two power support pipes (23) are respectively fixedly connected to the power plate flanges (22); multiple convex rings are fixedly connected to the outer wall of the power support pipes (23); when the power assembly (2) is arranged in the oil and gas pipeline (1), the outer diameter of the convex rings is supported by the inner wall of the oil and gas pipeline (1); the power discharge pipe (24) is arranged in the power outer cylinder (21) In 21), both ends are fixedly connected to the power plate flange (22), the power plate flange (22) is connected to the power discharge pipe (24), the power drive cylinder (26) is fixedly connected to the power mounting plate (25); the power discharge plate (27) is fixedly connected to the piston rod of the power drive cylinder (26), the power discharge plate (27) slides along the inner wall of the power support pipe (23) under the drive of the piston rod, and the power discharge plate (27) is provided with a power flow hole, the power flow hole is misaligned with the pipe opening of the power discharge pipe (24).

3. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 1, characterized in that: The anchoring assembly (3) includes two anchoring support plates (31), an anchoring hydraulic cylinder (32) installed between the two anchoring support plates (31), an anchoring seat (33) fixedly connected to the cylinder body of the anchoring hydraulic cylinder (32) and moving between the two anchoring support plates (31), multiple anchoring slips (34) sleeved on the anchoring seat (33), and anchoring springs (36) sleeved on the multiple anchoring slips (34); there is a gap between the edge of the anchoring hydraulic cylinder (32) and the inner wall of the oil and gas pipeline (1); when the anchoring hydraulic cylinder (32) is started, the cylinder body of the anchoring hydraulic cylinder (32) drives the anchoring seat (33) to push the multiple anchoring slips (34) along the radial direction of the anchoring hydraulic cylinder (32) to contact the inner wall of the pipeline body (11); the piston rod of the anchoring hydraulic cylinder (32) is fixedly connected to the two anchoring support plates (31) at both ends.

4. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 3, characterized in that: The anchoring seat (33) is a conical ring, and multiple anchoring pads (34) are arranged in a ring on the conical surface of the anchoring seat (33). The surface of the anchoring pads (34) in contact with the anchoring seat (33) is an arc-shaped surface.

5. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 4, characterized in that: The anchoring bracket (33) is provided with an arc-shaped groove (35), and there are multiple arc-shaped grooves (35). Each arc-shaped groove (35) corresponds to an anchoring bracket (34). A guide groove is provided in the arc-shaped groove (35) along the length direction of the anchoring bracket (33). A dovetail rail is fixedly connected to the anchoring bracket (34) and slides into the guide groove. The dovetail rail is embedded in the guide groove.

6. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 3, characterized in that: Multiple locking blocks (37) are fixedly connected to the anchoring support plate (31). The locking blocks (37) correspond one-to-one with the anchoring slips (34). The anchoring slips (34) are provided with slots for accommodating the locking blocks (37). The locking blocks (37) and the slots are arranged radially along the anchoring hydraulic cylinder (32).

7. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 3, characterized in that: The anchoring clip (34) has a groove for the anchoring spring (36) to be inserted.

8. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 1, characterized in that: The sealing assembly (4) includes two sealing support plates (41), a sealing hydraulic cylinder (42) installed between the two sealing support plates (41), a movable plate (43) fixedly connected to one side of the cylinder body of the sealing hydraulic cylinder (42), a fixed plate (44) arranged on the other side of the sealing hydraulic cylinder (42) and fixedly connected to the sealing support plate (41), and a rubber sealing ring (45) arranged between the fixed plate (44) and the movable plate (43) and sleeved on the cylinder body of the sealing hydraulic cylinder (42); there is a gap between the edge of the sealing hydraulic cylinder (42) and the inner wall of the oil and gas pipeline (1); when the sealing hydraulic cylinder (42) is started, the movable plate (43) is driven by the cylinder body of the sealing hydraulic cylinder (42) to squeeze and deform the rubber sealing ring (45) towards the fixed plate (44) and make it contact the inner wall of the pipeline body (11); the piston rod of the sealing hydraulic cylinder (42) is fixedly connected to the two sealing support plates (41) at both ends.

9. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 1, characterized in that: The in-pipe communication assembly (5) includes a communication outer cylinder (51), a communication plate flange (52), a communication support pipe (53), a communication drain pipe (54), a communication mounting plate (55), a communication drive cylinder (56), and a communication drain plate (57); The communication outer cylinder (51) is open at both ends; two communication plate flanges (52) are provided and fixedly connected to both ends of the communication outer cylinder (51); two communication support pipes (53) are provided, and the two communication support pipes (53) are respectively fixedly connected to the communication plate flanges (52); multiple convex rings are fixedly connected to the outer wall of the communication support pipes (53); when the communication component (5) inside the pipe is arranged in the oil and gas pipeline (1), the outer diameter of the convex rings is supported by the inner wall of the oil and gas pipeline (1); the communication drain pipe (54) is arranged in the communication outer cylinder. In (51), both ends are fixedly connected to the communication plate flange (52), the communication plate flange (52) is connected to the communication drain pipe (54), the communication drive cylinder (56) is fixedly connected to the communication mounting plate (55); the communication drain plate (57) is fixedly connected to the piston rod of the communication drive cylinder (56), the communication drain plate (57) slides along the inner wall of the communication support pipe (53) under the drive of the piston rod, and the communication drain plate (57) is provided with a communication flow hole, the communication flow hole is misaligned with the pipe opening of the communication drain pipe (54); The communication outer tube (51) is equipped with an internal power supply, an internal low-frequency processor and a transceiver antenna assembly; the internal power supply, internal low-frequency processor and transceiver antenna assembly, power assembly (2), anchoring assembly (3) and sealing assembly (4) adopt wired communication or Bluetooth communication. An external communication unit (7) is installed on the outside of the oil and gas pipeline (1); the external communication unit (7) and the internal communication component (5) exchange ultra-low frequency communication information.

10. The emergency repair device for oil and gas pipeline self-venting and ultra-low frequency communication according to claim 1, characterized in that: The connector (6) includes a first connector, a second connector, and a pin that connects the first connector and the second connector together.

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