WO2021026749A1 - Compound lining apparatus for pipeline - Google Patents

Compound lining apparatus for pipeline Download PDF

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Publication number
WO2021026749A1
WO2021026749A1 PCT/CN2019/100319 CN2019100319W WO2021026749A1 WO 2021026749 A1 WO2021026749 A1 WO 2021026749A1 CN 2019100319 W CN2019100319 W CN 2019100319W WO 2021026749 A1 WO2021026749 A1 WO 2021026749A1
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WO
WIPO (PCT)
Prior art keywords
pressure fluid
annular piston
sealing ring
cylindrical body
elastic sealing
Prior art date
Application number
PCT/CN2019/100319
Other languages
French (fr)
Chinese (zh)
Inventor
屈波
Original Assignee
屈波
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Publication date
Application filed by 屈波 filed Critical 屈波
Publication of WO2021026749A1 publication Critical patent/WO2021026749A1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/122—Multiple string packers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure

Definitions

  • the invention belongs to the technical field of oil and gas extraction in oil fields, and specifically relates to a pipeline composite lining device.
  • the main purpose of the present invention is to provide a pipeline composite lining device.
  • the embodiment of the present invention provides a pipeline composite lining device.
  • the pipeline composite lining device is applied in a pipeline and includes a cylindrical cylinder, a steering head, a control connector, an annular sealing component, and a metal lining pipe;
  • the cylindrical body includes a first cylindrical body, a connecting tube, and a second cylindrical body; one end of the first cylindrical body is used for injecting pressure fluid, and the other end is connected to one end of the second cylindrical body through a connecting tube , The other end of the second cylindrical body is connected with the guide head; the first cylindrical body and the second cylindrical body are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
  • the control connector is arranged in the central hole of the cylindrical cylinder, and is used to communicate with the first pressure fluid tank in the first cylinder, the connecting pipe and the second pressure fluid tank in the second cylinder;
  • the pressure fluid injection port provided in cooperation with the first cylinder body injects the pressure fluid in the first pressure fluid chamber to the outside of the first cylinder body;
  • the ring seal assembly includes an upper ring seal assembly and a lower ring seal assembly.
  • the upper ring seal assembly is sleeved on the first cylindrical cylinder and is used to control the pipeline after being driven by the pressure fluid from the first pressure fluid tank.
  • the upper end of the area to be compounded is sealed with the upper end of the metal lining pipe;
  • the lower ring-shaped sealing assembly is sleeved on the second cylindrical cylinder, and is used for the pipeline to be compounded after being driven by the pressure fluid from the second pressure fluid tank Seal the lower end of the area and the lower end of the metal lining pipe;
  • the metal lining tube is sleeved outside the annular sealing assembly and the cylindrical body, and forms a cavity containing pressure fluid between the outer wall of the cylindrical body and the annular sealing assembly.
  • control connector includes a cylindrical connecting cylinder, a guide steel column, and a shear pin.
  • the guide steel column is fixed by the shear pin to the cylindrical connecting cylinder facing the first cylindrical cylinder to inject pressure fluid. One end.
  • the cylindrical connecting cylinder is provided with a first pressure fluid injection port communicating with the first pressure fluid tank and the second pressure fluid tank in the axial direction, and the cylindrical connecting cylinder is radially connected to the first cylinder.
  • the corresponding position in the radial direction of the cylinder is provided with a connected second pressure fluid injection channel;
  • the guide steel column is provided with a third pressure fluid injection channel that can be matched with the second pressure fluid injection channel.
  • the upper annular seal assembly includes a first annular piston, a first elastic sealing ring, a second annular piston, and a second elastic sealing ring.
  • the first annular piston and the second annular piston are respectively arranged in the first cylinder.
  • the two sides of the cylinder are relatively displaced, a first elastic sealing ring is arranged in the displacement direction of the first annular piston, and a second elastic sealing ring is arranged in the displacement direction of the second annular piston.
  • a first annular piston injection chamber is formed between the distal end surface of the end surface of the first annular piston abutting the first elastic sealing ring and one end of the first cylindrical body, and the second annular piston abuts
  • a second annular piston liquid injection cavity is formed between the distal end surface of the end surface of the second elastic sealing ring and the other end of the first cylindrical body.
  • the first annular piston liquid injection cavity is in communication with the fourth pressure fluid injection channel in the radial direction of the first cylindrical body; the second annular piston liquid injection cavity is connected to the fifth radial direction of the first cylindrical body.
  • the pressure fluid injection channel is connected.
  • the lower annular seal assembly includes a third annular piston, a third elastic sealing ring, a fourth annular piston, and a fourth elastic sealing ring, and the third annular piston and the fourth annular piston are respectively arranged in the second cylinder
  • the two sides of the cylinder are relatively displaced, a third elastic sealing ring is arranged in the displacement direction of the third annular piston, and a fourth elastic sealing ring is arranged in the displacement direction of the fourth annular piston.
  • a third annular piston injection chamber is formed between the distal end surface of the end face of the third annular piston abutting the third elastic sealing ring and the second cylindrical body, and the fourth annular piston abuts the fourth
  • a fourth annular piston liquid injection cavity is formed between the distal end surface of the end surface of the elastic sealing ring and the second cylindrical barrel.
  • the third annular piston liquid injection cavity is in communication with the sixth pressure fluid injection channel in the radial direction of the second cylindrical body; the fourth annular piston liquid injection cavity is connected to the seventh radial direction of the second cylindrical body.
  • the pressure fluid injection channel is connected.
  • the second elastic sealing ring and the third elastic sealing ring respectively abut against both ends of the inner wall of the metal liner; the first elastic sealing ring and the fourth elastic sealing ring are compressed in the axial direction and in the radial direction. After expansion, they abut against both ends of the inner wall of the pipe respectively.
  • the present invention is simple in structure, reliable, convenient in construction, low in operating cost, does not require the aid of pyrotechnic devices, does not require expensive parts and auxiliary facilities, and does not require a large hydraulic fracturing vehicle.
  • Figure 1 is a schematic structural diagram of a pipeline composite lining device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a pipeline composite lining device in application according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a pipe composite lining device provided by an embodiment of the present invention after sealing both ends of a metal lining pipe;
  • FIG. 4 is a schematic diagram of the structure of the entire metal lining pipe after being sealed by a pipeline composite lining device according to an embodiment of the present invention.
  • 1-pipe 2-cylindrical barrel, 3-direction head, 4-control connector, 5-ring seal assembly, 6-metal lining pipe, 21-first cylindrical barrel, 22-connecting pipe, 23-Second cylindrical barrel, 24-Upper joint, 211-First pressure fluid tank, 221-Second pressure fluid tank, 212-Fourth pressure fluid injection channel, 213-Fifth pressure fluid injection channel, 231-No.
  • the embodiment of the present invention provides a pipeline composite lining device, the lining composite device is applied in the pipeline 1, as shown in FIG. 1, the pipeline composite lining device is applied in the pipeline 1, and includes a cylindrical cylinder 2, a guide Head 3, control connector 4, ring seal assembly 5, metal lining pipe 6;
  • the cylindrical body 2 includes a first cylindrical body 21, a connecting tube 22, and a second cylindrical body 23 that are connected in sequence; one end of the first cylindrical body 21 is used for injecting pressure fluid, and the second cylindrical body The other end of the body 23 is connected with the guide head 3; the first cylindrical body 21 and the second cylindrical body 23 are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
  • the cylindrical body 2 includes a first cylindrical body 21, a connecting tube 22, and a second cylindrical body 23 that are connected in sequence; one end of the first cylindrical body 21 is used for injecting pressure fluid, and the second cylindrical body The other end of the body 23 is connected with the guide head 3; the first cylindrical body 21 and the second cylindrical body 23 are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
  • the control connector 4 is arranged in the central hole of the first cylindrical barrel 21, and is used to communicate with the first pressure fluid reservoir 211 in the second cylindrical barrel 21 and the connecting pipe 22 and the second cylindrical barrel 23.
  • the second pressure fluid reservoir 221 is also used for injecting the pressure fluid in the first pressure fluid reservoir 211 into the outside of the first cylindrical barrel 21 through the pressure fluid injection port provided in cooperation with the first cylindrical barrel 21;
  • the annular seal assembly 5 includes an upper annular seal assembly 51 and a lower annular seal assembly 52.
  • the upper annular seal assembly 51 is sleeved on the first cylindrical cylinder 21 for receiving pressure from the first pressure fluid chamber 211. After the liquid is driven, the upper end of the pipeline 1 to be compounded area and the upper end of the metal lining pipe 6 are sealed; the lower annular sealing assembly 52 is sleeved on the second cylindrical cylinder 23 for receiving pressure from the second pressure liquid silo 221 After being driven by the pressure fluid, the lower end of the pipeline 1 and the lower end of the metal lining pipe 6 are sealed;
  • the metal lining tube 6 is sleeved outside the annular sealing assembly 5 and the cylindrical body 2, and forms a cavity 61 containing pressure fluid between the outer wall of the cylindrical body 2 and the annular sealing assembly 5.
  • the pressure fluid located in the first pressure fluid tank 211 and the second pressure fluid tank 221 drives the displacement of the annular seal assembly 5 through the pressure fluid injection port, thereby realizing the shaft of the annular seal assembly 5.
  • Compression and radial expansion, high-pressure-resistant sealing is performed on the upper and lower ends of the area to be compounded in the pipeline 1, so that the upper and lower ends of the area to be compounded in the pipeline 1 are sealed, and both ends of the inner wall of the metal lining pipe 6 are squeezed to make The two ends of the metal lining pipe 6 produce radial plastic deformation and are attached to the inner wall of the pipe 1, thereby achieving high pressure sealing at both ends of the metal lining pipe 6.
  • the pressure fluid in the first pressure fluid tank 211 The control connector 4 continues to apply pressure. After the pressure received by the control connector 4 exceeds the set pressure value, the pressure fluid injection channel connecting the first pressure fluid reservoir 211, the control connector 4 and the cavity 61 is opened, and the pressure fluid is injected Into the cavity 61, the pressure fluid in the cavity 61 uniformly applies pressure to the inner wall of the metal lining tube 6, causing the metal lining tube 6 to produce radial plastic deformation, and finally the outer wall of the entire metal lining tube 6 closely adheres Attached to the inner wall of the pipeline 1, and subsequently, the injection of the pressure liquid at one end of the cylindrical cylinder 2 is stopped, the pressure is released, the annular sealing assembly 5 is reset, and the present invention is withdrawn, while the metal lining pipe 6 remains stationary to achieve sealing Block subsidies.
  • One end of the first cylindrical barrel 21 for injecting pressure fluid is connected to the uphole equipment through the upper joint 24.
  • the connecting pipe 22 can be a hose to realize the soft connection between the first cylindrical barrel 21 and the second cylindrical barrel 23.
  • the length and thickness of the connecting pipe 22 can also be determined according to needs.
  • the connecting pipe 22 can also adopt the same components such as a sleeve to realize a rigid connection between the first cylindrical body 21 and the second cylindrical body 23.
  • the control connector 4 includes a cylindrical connecting cylinder 41, a guide steel column 42, and a shear pin 43.
  • the guide steel column 42 is fixed to the cylindrical connecting cylinder 41 by the shear pin 43 and faces the first cylindrical cylinder 21. The side where the pressure fluid is injected.
  • the cylindrical connecting cylinder 41 is provided with a first pressure fluid injection port 411 in the axial direction that communicates the first pressure fluid tank 211 and the second pressure fluid tank 221, and the cylindrical connecting cylinder 41 is radially connected to the first pressure fluid tank 221.
  • a communicating second pressure fluid injection hole 412 is provided at a corresponding position in the radial direction of the cylindrical barrel 21; the guide steel column 42 is provided with a third pressure fluid injection hole 421 that can be matched with the second pressure fluid injection hole 412.
  • the first pressure fluid injection channel 411 and the third pressure fluid injection channel 421 are staggered holes, and the first pressure fluid injection channel 411 is always in communication with the first pressure fluid reservoir 211 and the second pressure fluid reservoir 221.
  • the pressure fluid in the first pressure fluid tank 211 exerts pressure on the guide steel column 42. After the pressure exceeds the set pressure value of the shear pin 43, the shear pin 43 is disconnected. At this time, the guide steel column 43 moves to the right until it cannot move under the limit of the cylindrical connecting cylinder 41, the third pressure fluid injection channel 421 and the second pressure fluid injection channel 412 are opened, and the pressure in the first pressure fluid chamber 211 The liquid is injected into the cavity 61 through the opened pressure liquid injection port.
  • the upper annular seal assembly 51 includes a first annular piston 511, a first elastic sealing ring 512, a second annular piston 513, and a second elastic sealing ring 514.
  • the first annular piston 511 and the second annular piston 513 are respectively arranged at Both sides of the first cylindrical body 21 are relatively displaced, a first elastic sealing ring 512 is arranged in the displacement direction of the first annular piston 511, and a second elastic sealing ring 514 is arranged in the displacement direction of the second annular piston 513 .
  • a first annular piston injection chamber 5111 is formed between the distal end surface of the end surface of the first annular piston 511 abutting the first elastic sealing ring 512 and one end of the first cylindrical cylinder 21, and the second annular piston 513 abuts
  • a second annular piston injection cavity 5131 is formed between the distal end surface of the end surface of the second elastic sealing ring 514 and the other end of the first cylindrical body 21.
  • the first annular piston liquid injection chamber 5111 communicates with the fourth pressure fluid injection channel 212 in the radial direction of the first cylindrical body 21; the second annular piston liquid injection chamber 5131 and the first cylindrical body 21 in the radial direction Five pressure fluid injection channels 213 are connected.
  • the lower annular seal assembly 52 includes a third annular piston 521, a third elastic sealing ring 522, a fourth annular piston 523, and a fourth elastic sealing ring 524.
  • the third annular piston 521 and the fourth annular piston 523 are respectively arranged at Both sides of the second cylindrical body 23 are relatively displaced, a third elastic sealing ring 522 is provided in the displacement direction of the third annular piston 521, and a fourth elastic sealing ring 524 is provided in the displacement direction of the fourth annular piston 523.
  • a third annular piston liquid injection chamber 5211 is formed between the distal end surface of the end surface of the third annular piston 521 abutting the third elastic sealing ring 522 and the second cylindrical body 23, and the fourth annular piston 523 abuts the first
  • a fourth annular piston injection cavity 5231 is formed between the distal end surface of the end surface of the four elastic sealing ring 524 and the second cylindrical body 23.
  • the third annular piston liquid injection chamber 5211 communicates with the sixth pressure liquid injection channel 231 in the radial direction of the second cylindrical body 23; the fourth annular piston liquid injection chamber 5231 and the second cylindrical body 23 in the radial direction Seven pressure fluid injection channels 232 are connected.
  • the pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection channel 212, and pushes the first annular piston 511 to shift to the right; the first pressure fluid reservoir 211
  • the pressure fluid inside is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure fluid injection channel 213, pushing the second annular piston 513 to move leftward.
  • the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection channel 231, pushing the third annular piston 53 to shift to the right; the second pressure The pressure liquid in the liquid tank 221 is also injected into the fourth annular piston liquid injection chamber 5231 through the seventh pressure liquid injection passage 232, and pushes the fourth annular piston 523 to move to the left.
  • the second elastic sealing ring 514 and the third elastic sealing ring 522 abut against both ends of the inner wall of the metal liner pipe 6 respectively; the first elastic sealing ring 512 and the fourth elastic sealing ring 524 are compressed and radially compressed in the axial direction. After expanding, they abut against both ends of the inner wall of the pipe 1 respectively.
  • the pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection port 212, and drives the first annular piston 511 to shift to the right, the first annular piston 511
  • the rightward pressure is transferred to the first elastic sealing ring 512;
  • the pressure liquid in the first pressure liquid chamber 211 is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure liquid injection passage 213, pushing the second annular piston
  • the piston 513 is displaced to the left, and the second annular piston 5131 transmits leftward pressure to the second elastic sealing ring 513.
  • the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection port 231, and the third annular piston 521 is driven to shift to the right, and the third The annular piston 521 transfers rightward pressure to the third elastic sealing ring 522, and the pressure fluid in the second pressure fluid chamber 221 is also injected into the fourth annular piston fluid injection chamber 5231 through the seventh pressure fluid injection channel 232, pushing The fourth annular piston 523 is displaced to the left, and the fourth annular piston 523 transmits leftward pressure to the fourth elastic sealing ring 524.
  • the first elastic sealing ring 512, the second elastic sealing ring 514, the third elastic sealing ring 522, and the fourth elastic sealing ring 523 are respectively compressed and expanded radially after being pressed; the first elastic sealing ring
  • the ring 512 and the fourth elastic sealing ring 523 are subjected to pressure and produce axial compression and radial expansion, and then squeeze with both ends of the inner wall of the pipe 1 to achieve high pressure sealing of the upper and lower parts of the area to be compounded.
  • the second elastic sealing ring 514 and the third elastic sealing ring 522 are subjected to pressure to produce axial compression and radial expansion, they squeeze both ends of the inner wall of the metal lining pipe 6, and finally realize the upper and lower ends of the pipeline 1 to be compounded.
  • the uphole equipment injects pressure fluid into the first pressure fluid tank 211 through the upper joint 24, and the pressure fluid in the first pressure fluid tank 21 is also injected into the second pressure fluid tank through the first pressure fluid injection port 411 of the control connector 4 221. Under the effect of the continuous injection of pressure fluid into the upper joint 24, the pressure fluid in the first pressure fluid tank 211 and the second pressure fluid tank 221 generates a driving pressure F;
  • the pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection channel 212, and pushes the first annular piston 511 to shift to the right; the first pressure fluid reservoir 211
  • the pressure fluid inside is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure fluid injection channel 213, pushing the second annular piston 513 to move leftward.
  • the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection channel 231, pushing the third annular piston 53 to shift to the right; the second pressure The pressure liquid in the liquid tank 221 is also injected into the fourth annular piston liquid injection chamber 5231 through the seventh pressure liquid injection passage 232, and pushes the fourth annular piston 523 to move to the left.
  • the sealing process includes a sealing process of the upper and lower parts of the pipeline 1 to be sealed and leak-filling areas and a process of sealing both ends of the metal lining pipe 6.
  • the annular seal assembly 5 is preferred when the third pressure fluid injection port 421 and the second pressure fluid injection port 412 are not aligned and not opened. Start automatically.
  • first annular piston 511 moves to the right, pressure is transmitted to the first elastic sealing ring 512, and the fourth annular piston 523 is displaced to the left, transmitting pressure to the fourth elastic sealing ring 523, the first elastic sealing ring 512
  • the axial width of the fourth elastic sealing ring 523 and the fourth elastic sealing ring 523 are reduced.
  • the first elastic sealing ring 512 and the fourth elastic sealing ring 523 expand in the radial direction to respectively squeeze the upper and lower ends of the inner wall of the pipeline 1 to realize the pipeline 1 High pressure-resistant seals at the upper and lower ends of the area to be compounded.
  • the pressure liquid in the first pressure liquid chamber 211 continues to apply pressure to the guide steel column 42, which exceeds the shear pin 43 After the set pressure value of, the shear pin 43 is disconnected. At this time, the guide steel column 43 shifts to the right until it cannot move under the limit of the cylindrical connecting cylinder 41, the third pressure The liquid injection channel 421 is aligned with the second pressure liquid injection channel 412 and opened, and the pressure liquid located in the first pressure liquid chamber 211 is injected into the cavity 61 through the opened pressure liquid injection channel.
  • the pressure fluid in the cavity 61 uniformly applies pressure to the inner wall of the metal lining pipe 6 to cause the metal lining pipe 6 to undergo plastic deformation.
  • the outer wall of the entire metal lining pipe 6 is tightly squeezed against the inner wall of the pipe 1 to achieve sealing. Block subsidies.
  • the entire metal lining pipe 6 has undergone radial plastic deformation and is tightly compounded to the inner wall of the pipeline 1, completing the plugging and subsidy process.
  • the uphole equipment stops injecting pressure fluid into the first pressure fluid tank 211 through the upper joint 25 to release the pressure, and the present invention is in a pressure relief state;
  • the first annular piston 511, the second annular piston 513, the third annular piston 521, and the fourth annular piston return to the initial position, the first elastic sealing ring 512, the second elastic sealing ring 514, and the third elastic sealing ring 522 and the fourth elastic sealing ring 523 gradually reset after losing the pressure of the corresponding annular piston.
  • the first elastic sealing ring 512 and the fourth elastic sealing ring 524 are separated from both ends of the inner wall of the pipe 1 and the second After the second elastic sealing ring 514 and the third elastic sealing ring 522 are separated from the two ends of the inner wall of the metal lining pipe 6, the present invention is in a restored state. At this time, the present invention can be withdrawn.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A compound lining apparatus for a pipeline, comprising a cylindrical body (2), a directing head (3), a control connector (4),an annular sealing assembly (5), and a metal lining tube (6). One end of the cylindrical body (2) is used for injecting a pressurized liquid, and the other end is connected to the directing head (3). The controller (4) is arranged in a central channel of the cylindrical body (2). The annular sealing assembly (5) comprises an upper annular sealing assembly (51) and a lower annular sealing assembly (52), the upper annular sealing assembly (51) being sleeved on a first cylindrical body (21), and the lower annular sealing assembly (52) being sleeved on a second cylindrical body (23). The metal lining (6) is sleeved outside the annular sealing assembly (5) and the cylindrical body (2). The present apparatus features a simple and reliable structure, convenient construction, and low operating costs, does not require assistance of a pyrotechnic device, does not require high-cost components and auxiliary installations, and does not require a large hydraulic fracturing truck.

Description

管道复合内衬装置Pipeline composite lining device 技术领域Technical field
本发明属于油田采油采气技术领域，具体涉及一种管道复合内衬装置。The invention belongs to the technical field of oil and gas extraction in oil fields, and specifically relates to a pipeline composite lining device.
背景技术Background technique
在油气田开发生产过程中，随着生产时间的增加,各种地质因素和人工措施都会对井筒套管产生不同程度的影响，造成套管破漏、腐蚀穿孔，或者由于开采原因，需要封堵某一油气储层对应的井筒套管的射孔孔眼时，需要对井筒套管的局部区域进行封堵修补。In the process of oil and gas field development and production, as the production time increases, various geological factors and artificial measures will have varying degrees of impact on the wellbore casing, causing the casing to leak, corrode and perforate, or due to mining reasons, it is necessary to plug a certain When perforating the wellbore casing corresponding to an oil and gas reservoir, it is necessary to plug and repair the local area of the wellbore casing.
发明内容Summary of the invention
有鉴于此，本发明的主要目的在于提供一种管道复合内衬装置。In view of this, the main purpose of the present invention is to provide a pipeline composite lining device.
为达到上述目的，本发明的技术方案是这样实现的：In order to achieve the above objective, the technical solution of the present invention is achieved as follows:
本发明实施例提供一种管道复合内衬装置，该管道复合内衬装置应用在管道内，包括圆柱筒体、引向头、控制连接器、环形密封组件、金属内衬管；The embodiment of the present invention provides a pipeline composite lining device. The pipeline composite lining device is applied in a pipeline and includes a cylindrical cylinder, a steering head, a control connector, an annular sealing component, and a metal lining pipe;
所述圆柱筒体包括第一圆柱筒体、连接管、第二圆柱筒体；所述第一圆柱筒体的一端用于注入压力液，另一端通过连接管与第二圆柱筒体的一端连接，所述第二圆柱筒体的另一端与引向头连接；所述第一圆柱筒体和第二圆柱筒体的径向上分别设置有若干个压力液注入孔道；The cylindrical body includes a first cylindrical body, a connecting tube, and a second cylindrical body; one end of the first cylindrical body is used for injecting pressure fluid, and the other end is connected to one end of the second cylindrical body through a connecting tube , The other end of the second cylindrical body is connected with the guide head; the first cylindrical body and the second cylindrical body are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
所述控制连接器设置在圆柱筒体的中心孔道内，用于连通第一圆柱筒体内的第一压力液仓、与连接管和第二圆柱筒体内的第二压力液仓；还用于通过与第一圆柱筒体上配合设置的压力液注入孔道将第一压力液仓中的压力液注入到第一圆柱筒体的外部；The control connector is arranged in the central hole of the cylindrical cylinder, and is used to communicate with the first pressure fluid tank in the first cylinder, the connecting pipe and the second pressure fluid tank in the second cylinder; The pressure fluid injection port provided in cooperation with the first cylinder body injects the pressure fluid in the first pressure fluid chamber to the outside of the first cylinder body;
所述环形密封组件包括上环形密封组件、下环形密封组件，所述上环形密封组件套设在第一圆柱筒体上，用于在受到来自第一压力液仓的压力液的驱动后对管道的待复合区域上端和金属内衬管上端密封；所述下环形密封组件套设 在第二圆柱筒体上，用于在受到来自第二压力液仓的压力液的驱动后对管道的待复合区域下端和金属内衬管下端密封；The ring seal assembly includes an upper ring seal assembly and a lower ring seal assembly. The upper ring seal assembly is sleeved on the first cylindrical cylinder and is used to control the pipeline after being driven by the pressure fluid from the first pressure fluid tank. The upper end of the area to be compounded is sealed with the upper end of the metal lining pipe; the lower ring-shaped sealing assembly is sleeved on the second cylindrical cylinder, and is used for the pipeline to be compounded after being driven by the pressure fluid from the second pressure fluid tank Seal the lower end of the area and the lower end of the metal lining pipe;
所述金属内衬管套设在环形密封组件和圆柱筒体之外，并且与圆柱筒体的外壁之间形成容纳压力液的腔体。The metal lining tube is sleeved outside the annular sealing assembly and the cylindrical body, and forms a cavity containing pressure fluid between the outer wall of the cylindrical body and the annular sealing assembly.
上述方案中，所述控制连接器包括圆柱形连接筒体、导向钢柱、剪切销，所述导向钢柱通过剪切销固定在圆柱形连接筒体面向第一圆柱筒体中注入压力液的一端。In the above solution, the control connector includes a cylindrical connecting cylinder, a guide steel column, and a shear pin. The guide steel column is fixed by the shear pin to the cylindrical connecting cylinder facing the first cylindrical cylinder to inject pressure fluid. One end.
上述方案中，所述圆柱形连接筒体的轴向上设置连通第一压力液仓和第二压力液仓的第一压力液注入孔道，所述圆柱形连接筒体的径向上和第一圆柱筒体的径向上对应位置设置有连通的第二压力液注入孔道；所述导向钢柱上设置有能够与第二压力液注入孔道匹配的第三压力液注入孔道。In the above solution, the cylindrical connecting cylinder is provided with a first pressure fluid injection port communicating with the first pressure fluid tank and the second pressure fluid tank in the axial direction, and the cylindrical connecting cylinder is radially connected to the first cylinder. The corresponding position in the radial direction of the cylinder is provided with a connected second pressure fluid injection channel; the guide steel column is provided with a third pressure fluid injection channel that can be matched with the second pressure fluid injection channel.
上述方案中，所述上环形密封组件包括第一环形活塞、第一弹性密封圈、第二环形活塞、第二弹性密封圈，所述第一环形活塞和第二环形活塞分别设置在第一圆柱筒体的两侧并且相对位移，所述第一环形活塞的位移方向上设置第一弹性密封圈，所述第二环形活塞的位移方向上设置第二弹性密封圈。In the above solution, the upper annular seal assembly includes a first annular piston, a first elastic sealing ring, a second annular piston, and a second elastic sealing ring. The first annular piston and the second annular piston are respectively arranged in the first cylinder. The two sides of the cylinder are relatively displaced, a first elastic sealing ring is arranged in the displacement direction of the first annular piston, and a second elastic sealing ring is arranged in the displacement direction of the second annular piston.
上述方案中，所述第一环形活塞抵接第一弹性密封圈的端面的远端面和第一圆柱筒体的一端之间形成第一环形活塞注液腔，所述第二环形活塞抵接第二弹性密封圈的端面的远端面和第一圆柱筒体的另一端之间形成第二环形活塞注液腔。In the above solution, a first annular piston injection chamber is formed between the distal end surface of the end surface of the first annular piston abutting the first elastic sealing ring and one end of the first cylindrical body, and the second annular piston abuts A second annular piston liquid injection cavity is formed between the distal end surface of the end surface of the second elastic sealing ring and the other end of the first cylindrical body.
上述方案中，所述第一环形活塞注液腔与第一圆柱筒体径向上的第四压力液注入通道连通；所述第二环形活塞注液腔与第一圆柱筒体径向上的第五压力液注入通道连通。In the above solution, the first annular piston liquid injection cavity is in communication with the fourth pressure fluid injection channel in the radial direction of the first cylindrical body; the second annular piston liquid injection cavity is connected to the fifth radial direction of the first cylindrical body. The pressure fluid injection channel is connected.
上述方案中，所述下环形密封组件包括第三环形活塞、第三弹性密封圈、第四环形活塞、第四弹性密封圈，所述第三环形活塞和第四环形活塞分别设置在第二圆柱筒体的两侧并且相对位移，所述第三环形活塞的位移方向上设置第三弹性密封圈，所述第四环形活塞的位移方向上设置第四弹性密封圈。In the above solution, the lower annular seal assembly includes a third annular piston, a third elastic sealing ring, a fourth annular piston, and a fourth elastic sealing ring, and the third annular piston and the fourth annular piston are respectively arranged in the second cylinder The two sides of the cylinder are relatively displaced, a third elastic sealing ring is arranged in the displacement direction of the third annular piston, and a fourth elastic sealing ring is arranged in the displacement direction of the fourth annular piston.
上述方案中，所述第三环形活塞抵接第三弹性密封圈的端面的远端面和第二圆柱筒体之间形成第三环形活塞注液腔，所述第四环形活塞抵接第四弹性密封圈的端面的远端面和第二圆柱筒体之间形成第四环形活塞注液腔。In the above solution, a third annular piston injection chamber is formed between the distal end surface of the end face of the third annular piston abutting the third elastic sealing ring and the second cylindrical body, and the fourth annular piston abuts the fourth A fourth annular piston liquid injection cavity is formed between the distal end surface of the end surface of the elastic sealing ring and the second cylindrical barrel.
上述方案中，所述第三环形活塞注液腔与第二圆柱筒体径向上的第六压力液注入通道连通；所述第四环形活塞注液腔与第二圆柱筒体径向上的第七压力液注入通道连通。In the above solution, the third annular piston liquid injection cavity is in communication with the sixth pressure fluid injection channel in the radial direction of the second cylindrical body; the fourth annular piston liquid injection cavity is connected to the seventh radial direction of the second cylindrical body. The pressure fluid injection channel is connected.
上述方案中，所述第二弹性密封圈、第三弹性密封圈分别与金属内衬管的内壁两端抵接；所述第一弹性密封圈、第四弹性密封圈在轴向压缩和径向膨胀后，分别与管道的内壁两端抵接。In the above solution, the second elastic sealing ring and the third elastic sealing ring respectively abut against both ends of the inner wall of the metal liner; the first elastic sealing ring and the fourth elastic sealing ring are compressed in the axial direction and in the radial direction. After expansion, they abut against both ends of the inner wall of the pipe respectively.
与现有技术相比，本发明结构简单、可靠、施工方便、作业成本低，无需火工品辅助，无需造价昂贵的零部件和辅助设施，无需大型水利压裂车。Compared with the prior art, the present invention is simple in structure, reliable, convenient in construction, low in operating cost, does not require the aid of pyrotechnic devices, does not require expensive parts and auxiliary facilities, and does not require a large hydraulic fracturing vehicle.
附图说明Description of the drawings
图1为本发明实施例提供一种管道复合内衬装置的结构示意图；Figure 1 is a schematic structural diagram of a pipeline composite lining device according to an embodiment of the present invention;
图2为本发明实施例提供一种管道复合内衬装置在应用中的结构示意图；2 is a schematic structural diagram of a pipeline composite lining device in application according to an embodiment of the present invention;
图3为本发明实施例提供一种管道复合内衬装置对金属内衬管两端密封后的结构示意图；FIG. 3 is a schematic structural diagram of a pipe composite lining device provided by an embodiment of the present invention after sealing both ends of a metal lining pipe;
图4为本发明实施例提供一种管道复合内衬装置对整个金属内衬管密封后的结构示意图。FIG. 4 is a schematic diagram of the structure of the entire metal lining pipe after being sealed by a pipeline composite lining device according to an embodiment of the present invention.
其中，1-管道、2-圆柱筒体、3-引向头、4-控制连接器、5-环形密封组件、6-金属内衬管、21-第一圆柱筒体、22-连接管、23-第二圆柱筒体、24-上接头、211-第一压力液仓、221-第二压力液仓、212-第四压力液注入通道、213-第五压力液注入通道、231-第六压力液注入通道、232-第七压力液注入通道、61-腔体、41-圆柱形连接筒体、42-导向钢柱、43-剪切销、411-第一压力液注入孔道、412-第二压力液注入孔道、421-第三压力液注入孔道、51-上环形密封组件、52-下环形密封组件、511-第一环形活塞、512-第一弹性密封圈、513-第二环形 活塞、514-第二弹性密封圈、521-第三环形活塞、522-第三弹性密封圈、523-第四环形活塞、524-第四弹性密封圈、5111-第一环形活塞注液腔、5131-第二环形活塞注液腔、5211-第三环形活塞注液腔、5231-第四环形活塞注液腔。Among them, 1-pipe, 2-cylindrical barrel, 3-direction head, 4-control connector, 5-ring seal assembly, 6-metal lining pipe, 21-first cylindrical barrel, 22-connecting pipe, 23-Second cylindrical barrel, 24-Upper joint, 211-First pressure fluid tank, 221-Second pressure fluid tank, 212-Fourth pressure fluid injection channel, 213-Fifth pressure fluid injection channel, 231-No. Six pressure fluid injection channels, 232-seventh pressure fluid injection channels, 61-cavity, 41-cylindrical connecting cylinder, 42-guide steel column, 43-shear pin, 411-first pressure fluid injection channel, 412 -Second pressure fluid injection port, 421-third pressure fluid injection port, 51-upper annular seal assembly, 52-lower annular seal assembly, 511-first annular piston, 512-first elastic sealing ring, 513-second Annular piston, 514-second elastic sealing ring, 521-third annular piston, 522-third elastic sealing ring, 523-fourth annular piston, 524-fourth elastic sealing ring, 5111-first annular piston injection cavity , 5131-second annular piston injection chamber, 5211-third annular piston injection chamber, 5231-fourth annular piston injection chamber.
具体实施方式detailed description
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
本发明实施例提供一种管道复合内衬装置，该内衬复合器应用在管道1内，如图1所示，该管道复合内衬装置应用在管道1内，包括圆柱筒体2、引向头3、控制连接器4、环形密封组件5、金属内衬管6；The embodiment of the present invention provides a pipeline composite lining device, the lining composite device is applied in the pipeline 1, as shown in FIG. 1, the pipeline composite lining device is applied in the pipeline 1, and includes a cylindrical cylinder 2, a guide Head 3, control connector 4, ring seal assembly 5, metal lining pipe 6;
所述圆柱筒体2包括依次连接的第一圆柱筒体21、连接管22、第二圆柱筒体23；所述第一圆柱筒体21的一端用于注入压力液，所述第二圆柱筒体23的另一端与引向头3连接；所述第一圆柱筒体21和第二圆柱筒体23的径向上分别设置有若干个压力液注入孔道；The cylindrical body 2 includes a first cylindrical body 21, a connecting tube 22, and a second cylindrical body 23 that are connected in sequence; one end of the first cylindrical body 21 is used for injecting pressure fluid, and the second cylindrical body The other end of the body 23 is connected with the guide head 3; the first cylindrical body 21 and the second cylindrical body 23 are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
所述圆柱筒体2包括依次连接的第一圆柱筒体21、连接管22、第二圆柱筒体23；所述第一圆柱筒体21的一端用于注入压力液，所述第二圆柱筒体23的另一端与引向头3连接；所述第一圆柱筒体21和第二圆柱筒体23的径向上分别设置有若干个压力液注入孔道；The cylindrical body 2 includes a first cylindrical body 21, a connecting tube 22, and a second cylindrical body 23 that are connected in sequence; one end of the first cylindrical body 21 is used for injecting pressure fluid, and the second cylindrical body The other end of the body 23 is connected with the guide head 3; the first cylindrical body 21 and the second cylindrical body 23 are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
所述控制连接器4设置在第一圆柱筒体21的中心孔道内，用于连通第二圆柱筒体21内的第一压力液仓211、与连接管22和第二圆柱筒体23内的第二压力液仓221；还用于通过与第一圆柱筒体21上配合设置的压力液注入孔道将第一压力液仓211中的压力液注入到第一圆柱筒体21的外部；The control connector 4 is arranged in the central hole of the first cylindrical barrel 21, and is used to communicate with the first pressure fluid reservoir 211 in the second cylindrical barrel 21 and the connecting pipe 22 and the second cylindrical barrel 23. The second pressure fluid reservoir 221; is also used for injecting the pressure fluid in the first pressure fluid reservoir 211 into the outside of the first cylindrical barrel 21 through the pressure fluid injection port provided in cooperation with the first cylindrical barrel 21;
所述环形密封组件5包括上环形密封组件51、下环形密封组件52，所述上环形密封组件51套设在第一圆柱筒体21上，用于在受到来自第一压力液仓211的压力液的驱动后对管道1的待复合区域上端和金属内衬管6上端密封；所述 下环形密封组件52套设在第二圆柱筒体23上，用于在受到来自第二压力液仓221的压力液的驱动后对管道1的待复合区域下端和金属内衬管6下端密封；The annular seal assembly 5 includes an upper annular seal assembly 51 and a lower annular seal assembly 52. The upper annular seal assembly 51 is sleeved on the first cylindrical cylinder 21 for receiving pressure from the first pressure fluid chamber 211. After the liquid is driven, the upper end of the pipeline 1 to be compounded area and the upper end of the metal lining pipe 6 are sealed; the lower annular sealing assembly 52 is sleeved on the second cylindrical cylinder 23 for receiving pressure from the second pressure liquid silo 221 After being driven by the pressure fluid, the lower end of the pipeline 1 and the lower end of the metal lining pipe 6 are sealed;
所述金属内衬管6套设在环形密封组件5和圆柱筒体2之外，并且与圆柱筒体2的外壁之间形成容纳压力液的腔体61。The metal lining tube 6 is sleeved outside the annular sealing assembly 5 and the cylindrical body 2, and forms a cavity 61 containing pressure fluid between the outer wall of the cylindrical body 2 and the annular sealing assembly 5.
这样，压力液通过圆柱筒体2的一端注入后，位于第一压力液仓211和第二压力液仓221的压力液通过压力液注入孔道驱动环形密封组件5位移，实现环形密封组件5的轴向压缩和径向膨胀，对管道1的待复合区域上下端进行耐高压密封，使得管道1中待复合区域的上下两端被密封，对金属内衬管6的内壁两端进行挤压，使得金属内衬管6的两端产生径向塑性变形，贴附在管道1的内壁，进而实现金属内衬管6两端的耐高压密封，之后，所述第一压力液仓211内的压力液对控制连接器4继续施加压力，所述控制连接器4受到的压力超过设定压力值后，连通第一压力液仓211、控制连接器4和腔体61的压力液注入孔道打开，压力液注入到腔体61内，所述腔体61内的压力液对金属内衬管6的内壁均匀施加压力，使得金属内衬管6产生径向塑性变形，最终整个金属内衬管6的外壁紧密贴附在管道1的内壁，随之，停止圆柱筒体2一端的压力液注入，释放压力，所述环形密封组件5复位，撤出本发明，而金属内衬管6仍旧保持不动，实现封堵补贴。In this way, after the pressure fluid is injected through one end of the cylindrical cylinder 2, the pressure fluid located in the first pressure fluid tank 211 and the second pressure fluid tank 221 drives the displacement of the annular seal assembly 5 through the pressure fluid injection port, thereby realizing the shaft of the annular seal assembly 5. Compression and radial expansion, high-pressure-resistant sealing is performed on the upper and lower ends of the area to be compounded in the pipeline 1, so that the upper and lower ends of the area to be compounded in the pipeline 1 are sealed, and both ends of the inner wall of the metal lining pipe 6 are squeezed to make The two ends of the metal lining pipe 6 produce radial plastic deformation and are attached to the inner wall of the pipe 1, thereby achieving high pressure sealing at both ends of the metal lining pipe 6. After that, the pressure fluid in the first pressure fluid tank 211 The control connector 4 continues to apply pressure. After the pressure received by the control connector 4 exceeds the set pressure value, the pressure fluid injection channel connecting the first pressure fluid reservoir 211, the control connector 4 and the cavity 61 is opened, and the pressure fluid is injected Into the cavity 61, the pressure fluid in the cavity 61 uniformly applies pressure to the inner wall of the metal lining tube 6, causing the metal lining tube 6 to produce radial plastic deformation, and finally the outer wall of the entire metal lining tube 6 closely adheres Attached to the inner wall of the pipeline 1, and subsequently, the injection of the pressure liquid at one end of the cylindrical cylinder 2 is stopped, the pressure is released, the annular sealing assembly 5 is reset, and the present invention is withdrawn, while the metal lining pipe 6 remains stationary to achieve sealing Block subsidies.
所述第一圆柱筒体21用于注入压力液的一端通过上接头24与井上设备连接。One end of the first cylindrical barrel 21 for injecting pressure fluid is connected to the uphole equipment through the upper joint 24.
所述连接管22可以采用软管，实现第一圆柱筒体21和第二圆柱筒体23的软连接，当然，也可以根据需要确定连接管22的长度和粗细。The connecting pipe 22 can be a hose to realize the soft connection between the first cylindrical barrel 21 and the second cylindrical barrel 23. Of course, the length and thickness of the connecting pipe 22 can also be determined according to needs.
所述连接管22也可以采用套筒等等同部件，实现第一圆柱筒体21和第二圆柱筒体23的刚性连接。The connecting pipe 22 can also adopt the same components such as a sleeve to realize a rigid connection between the first cylindrical body 21 and the second cylindrical body 23.
所述控制连接器4包括圆柱形连接筒体41、导向钢柱42、剪切销43，所述导向钢柱42通过剪切销43固定在圆柱形连接筒体41面向第一圆柱筒体21中注入压力液的一侧。The control connector 4 includes a cylindrical connecting cylinder 41, a guide steel column 42, and a shear pin 43. The guide steel column 42 is fixed to the cylindrical connecting cylinder 41 by the shear pin 43 and faces the first cylindrical cylinder 21. The side where the pressure fluid is injected.
所述圆柱形连接筒体41的轴向上设置连通第一压力液仓211和第二压力液仓221的第一压力液注入孔道411，所述圆柱形连接筒体41的径向上和第一圆柱筒体21的径向上对应位置设置有连通的第二压力液注入孔道412；所述导向钢柱42上设置有能够与第二压力液注入孔道412匹配的第三压力液注入孔道421。The cylindrical connecting cylinder 41 is provided with a first pressure fluid injection port 411 in the axial direction that communicates the first pressure fluid tank 211 and the second pressure fluid tank 221, and the cylindrical connecting cylinder 41 is radially connected to the first pressure fluid tank 221. A communicating second pressure fluid injection hole 412 is provided at a corresponding position in the radial direction of the cylindrical barrel 21; the guide steel column 42 is provided with a third pressure fluid injection hole 421 that can be matched with the second pressure fluid injection hole 412.
所述第一压力液注入孔道411与第三压力液注入孔道421为错位孔，所述第一压力液注入孔道411始终与第一压力液仓211和第二压力液仓221保持连通。The first pressure fluid injection channel 411 and the third pressure fluid injection channel 421 are staggered holes, and the first pressure fluid injection channel 411 is always in communication with the first pressure fluid reservoir 211 and the second pressure fluid reservoir 221.
所述第一压力液仓211内压力液对导向钢柱42施加压力，该压力超过剪切销43的设定压力值后，所述剪切销43断开，这时，所述导向钢柱43向右位移，直至在圆柱形连接筒体41的限位下无法移动时，所述第三压力液注入孔道421与第二压力液注入孔道412打开，位于第一压力液仓211中的压力液通过打开的压力液注入孔道注入到腔体61内。The pressure fluid in the first pressure fluid tank 211 exerts pressure on the guide steel column 42. After the pressure exceeds the set pressure value of the shear pin 43, the shear pin 43 is disconnected. At this time, the guide steel column 43 moves to the right until it cannot move under the limit of the cylindrical connecting cylinder 41, the third pressure fluid injection channel 421 and the second pressure fluid injection channel 412 are opened, and the pressure in the first pressure fluid chamber 211 The liquid is injected into the cavity 61 through the opened pressure liquid injection port.
只有在环形密封组件5的轴向压缩和径向膨胀达到极限后，所述导向钢柱42受到的压力才可能超过剪切销43的设定压力值，所以这就保证只有在金属内衬管6的内壁两端密封之后，才会对金属内衬管6进行封堵补贴。Only after the axial compression and radial expansion of the annular seal assembly 5 reach the limit, the pressure on the guide steel column 42 may exceed the set pressure value of the shear pin 43, so this ensures that only in the metal lined pipe After the two ends of the inner wall of 6 are sealed, the metal lining pipe 6 will be blocked and subsidized.
所述上环形密封组件51包括第一环形活塞511、第一弹性密封圈512、第二环形活塞513、第二弹性密封圈514，所述第一环形活塞511和第二环形活塞513分别设置在第一圆柱筒体21的两侧并且相对位移，所述第一环形活塞511的位移方向上设置第一弹性密封圈512，所述第二环形活塞513的位移方向上设置第二弹性密封圈514。The upper annular seal assembly 51 includes a first annular piston 511, a first elastic sealing ring 512, a second annular piston 513, and a second elastic sealing ring 514. The first annular piston 511 and the second annular piston 513 are respectively arranged at Both sides of the first cylindrical body 21 are relatively displaced, a first elastic sealing ring 512 is arranged in the displacement direction of the first annular piston 511, and a second elastic sealing ring 514 is arranged in the displacement direction of the second annular piston 513 .
所述第一环形活塞511抵接第一弹性密封圈512的端面的远端面和第一圆柱筒体21的一端之间形成第一环形活塞注液腔5111，所述第二环形活塞513抵接第二弹性密封圈514的端面的远端面和第一圆柱筒体21的另一端之间形成第二环形活塞注液腔5131。A first annular piston injection chamber 5111 is formed between the distal end surface of the end surface of the first annular piston 511 abutting the first elastic sealing ring 512 and one end of the first cylindrical cylinder 21, and the second annular piston 513 abuts A second annular piston injection cavity 5131 is formed between the distal end surface of the end surface of the second elastic sealing ring 514 and the other end of the first cylindrical body 21.
所述第一环形活塞注液腔5111与第一圆柱筒体21径向上的第四压力液注 入通道212连通；所述第二环形活塞注液腔5131与第一圆柱筒体21径向上的第五压力液注入通道213连通。The first annular piston liquid injection chamber 5111 communicates with the fourth pressure fluid injection channel 212 in the radial direction of the first cylindrical body 21; the second annular piston liquid injection chamber 5131 and the first cylindrical body 21 in the radial direction Five pressure fluid injection channels 213 are connected.
所述下环形密封组件52包括第三环形活塞521、第三弹性密封圈522、第四环形活塞523、第四弹性密封圈524，所述第三环形活塞521和第四环形活塞523分别设置在第二圆柱筒体23的两侧并且相对位移，所述第三环形活塞521的位移方向上设置第三弹性密封圈522，所述第四环形活塞523的位移方向上设置第四弹性密封圈524。The lower annular seal assembly 52 includes a third annular piston 521, a third elastic sealing ring 522, a fourth annular piston 523, and a fourth elastic sealing ring 524. The third annular piston 521 and the fourth annular piston 523 are respectively arranged at Both sides of the second cylindrical body 23 are relatively displaced, a third elastic sealing ring 522 is provided in the displacement direction of the third annular piston 521, and a fourth elastic sealing ring 524 is provided in the displacement direction of the fourth annular piston 523. .
所述第三环形活塞521抵接第三弹性密封圈522的端面的远端面和第二圆柱筒体23之间形成第三环形活塞注液腔5211，所述第四环形活塞523抵接第四弹性密封圈524的端面的远端面和第二圆柱筒体23之间形成第四环形活塞注液腔5231。A third annular piston liquid injection chamber 5211 is formed between the distal end surface of the end surface of the third annular piston 521 abutting the third elastic sealing ring 522 and the second cylindrical body 23, and the fourth annular piston 523 abuts the first A fourth annular piston injection cavity 5231 is formed between the distal end surface of the end surface of the four elastic sealing ring 524 and the second cylindrical body 23.
所述第三环形活塞注液腔5211与第二圆柱筒体23径向上的第六压力液注入通道231连通；所述第四环形活塞注液腔5231与第二圆柱筒体23径向上的第七压力液注入通道232连通。The third annular piston liquid injection chamber 5211 communicates with the sixth pressure liquid injection channel 231 in the radial direction of the second cylindrical body 23; the fourth annular piston liquid injection chamber 5231 and the second cylindrical body 23 in the radial direction Seven pressure fluid injection channels 232 are connected.
所述第一压力液仓211内的压力液通过第四压力液注入通道212注入到第一环形活塞注液腔5111中，推动第一环形活塞511向右位移；所述第一压力液仓211内的压力液还通过第五压力液注入通道213注入到第二环形活塞注液腔5131中，推动第二环形活塞513向左位移。The pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection channel 212, and pushes the first annular piston 511 to shift to the right; the first pressure fluid reservoir 211 The pressure fluid inside is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure fluid injection channel 213, pushing the second annular piston 513 to move leftward.
同样地，所述第二压力液仓221内的压力液通过第六压力液注入通道231注入到第三环形活塞注液腔5211中，推动第三环形活塞53向右位移；所述第二压力液仓221内的压力液还通过第七压力液注入通道232注入到第四环形活塞注液腔5231中，推动第四环形活塞523向左位移。Similarly, the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection channel 231, pushing the third annular piston 53 to shift to the right; the second pressure The pressure liquid in the liquid tank 221 is also injected into the fourth annular piston liquid injection chamber 5231 through the seventh pressure liquid injection passage 232, and pushes the fourth annular piston 523 to move to the left.
所述第二弹性密封圈514、第三弹性密封圈522分别与金属内衬管6的内壁两端抵接；所述第一弹性密封圈512、第四弹性密封圈524在轴向压缩和径向膨胀后，分别与管道1的内壁两端抵接。The second elastic sealing ring 514 and the third elastic sealing ring 522 abut against both ends of the inner wall of the metal liner pipe 6 respectively; the first elastic sealing ring 512 and the fourth elastic sealing ring 524 are compressed and radially compressed in the axial direction. After expanding, they abut against both ends of the inner wall of the pipe 1 respectively.
所述第一压力液仓211中的压力液通过第四压力液注入孔道212注入到第 一环形活塞注液腔5111中，并且驱动第一环形活塞511向右位移，所述第一环形活塞511对第一弹性密封圈512传递向右的压力；所述第一压力液仓211内的压力液还通过第五压力液注入通道213注入到第二环形活塞注液腔5131中，推动第二环形活塞513向左位移，所述第二环形活塞5131对第二弹性密封圈513传递向左的压力。The pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection port 212, and drives the first annular piston 511 to shift to the right, the first annular piston 511 The rightward pressure is transferred to the first elastic sealing ring 512; the pressure liquid in the first pressure liquid chamber 211 is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure liquid injection passage 213, pushing the second annular piston The piston 513 is displaced to the left, and the second annular piston 5131 transmits leftward pressure to the second elastic sealing ring 513.
同样地，所述第二压力液仓221中的压力液通过第六压力液注入孔道231注入到第三环形活塞注液腔5211中，并且驱动第三环形活塞521向右位移，所述第三环形活塞521对第三弹性密封圈522传递向右的压力，所述第二压力液仓221内的压力液还通过第七压力液注入通道232注入到第四环形活塞注液腔5231中，推动第四环形活塞523向左位移，所述第四环形活塞523对第四弹性密封圈524传递向左的压力。Similarly, the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection port 231, and the third annular piston 521 is driven to shift to the right, and the third The annular piston 521 transfers rightward pressure to the third elastic sealing ring 522, and the pressure fluid in the second pressure fluid chamber 221 is also injected into the fourth annular piston fluid injection chamber 5231 through the seventh pressure fluid injection channel 232, pushing The fourth annular piston 523 is displaced to the left, and the fourth annular piston 523 transmits leftward pressure to the fourth elastic sealing ring 524.
这样，所述第一弹性密封圈512、第二弹性密封圈514、第三弹性密封圈522、第四弹性密封圈523分别受到压力后产生轴向压缩和径向膨胀；所述第一弹性密封圈512和第四弹性密封圈523受到压力，产生轴向压缩和径向膨胀后，与管道1的内壁两端挤压，实现管道1的待复合区域的上下部的耐高压密封，所述第二弹性密封圈514、第三弹性密封圈522受到压力，产生轴向压缩和径向膨胀后，对金属内衬管6的内壁两端挤压，最终，实现管道1的待复合区域上下两端和金属内衬管6内壁两端的耐高压密封。In this way, the first elastic sealing ring 512, the second elastic sealing ring 514, the third elastic sealing ring 522, and the fourth elastic sealing ring 523 are respectively compressed and expanded radially after being pressed; the first elastic sealing ring The ring 512 and the fourth elastic sealing ring 523 are subjected to pressure and produce axial compression and radial expansion, and then squeeze with both ends of the inner wall of the pipe 1 to achieve high pressure sealing of the upper and lower parts of the area to be compounded. After the second elastic sealing ring 514 and the third elastic sealing ring 522 are subjected to pressure to produce axial compression and radial expansion, they squeeze both ends of the inner wall of the metal lining pipe 6, and finally realize the upper and lower ends of the pipeline 1 to be compounded. And the high pressure seal at both ends of the inner wall of the metal lining pipe 6.
本发明实施例的工作过程如下：The working process of the embodiment of the present invention is as follows:
(1)驱动压力的产生：(1) Generation of driving pressure:
井上设备通过上接头24向第一压力液仓211注入压力液，所述第一压力液仓21内的压力液通过控制连接器4的第一压力液注入孔道411也注入到第二压力液仓221，在所述上接头24持续注入压力液的作用下，所述第一压力液仓211和第二压力液仓221内的压力液，产生驱动压力F；The uphole equipment injects pressure fluid into the first pressure fluid tank 211 through the upper joint 24, and the pressure fluid in the first pressure fluid tank 21 is also injected into the second pressure fluid tank through the first pressure fluid injection port 411 of the control connector 4 221. Under the effect of the continuous injection of pressure fluid into the upper joint 24, the pressure fluid in the first pressure fluid tank 211 and the second pressure fluid tank 221 generates a driving pressure F;
所述第一压力液仓211内的压力液通过第四压力液注入通道212注入到第一环形活塞注液腔5111中，推动第一环形活塞511向右位移；所述第一压力液 仓211内的压力液还通过第五压力液注入通道213注入到第二环形活塞注液腔5131中，推动第二环形活塞513向左位移。The pressure fluid in the first pressure fluid reservoir 211 is injected into the first annular piston fluid injection chamber 5111 through the fourth pressure fluid injection channel 212, and pushes the first annular piston 511 to shift to the right; the first pressure fluid reservoir 211 The pressure fluid inside is also injected into the second annular piston liquid injection chamber 5131 through the fifth pressure fluid injection channel 213, pushing the second annular piston 513 to move leftward.
同样地，所述第二压力液仓221内的压力液通过第六压力液注入通道231注入到第三环形活塞注液腔5211中，推动第三环形活塞53向右位移；所述第二压力液仓221内的压力液还通过第七压力液注入通道232注入到第四环形活塞注液腔5231中，推动第四环形活塞523向左位移。Similarly, the pressure fluid in the second pressure fluid tank 221 is injected into the third annular piston fluid injection chamber 5211 through the sixth pressure fluid injection channel 231, pushing the third annular piston 53 to shift to the right; the second pressure The pressure liquid in the liquid tank 221 is also injected into the fourth annular piston liquid injection chamber 5231 through the seventh pressure liquid injection passage 232, and pushes the fourth annular piston 523 to move to the left.
(2)启动密封过程：(2) Start the sealing process:
该密封过程包括管道1的待封堵补漏区域的上下部密封过程和金属内衬管6的两端密封过程。The sealing process includes a sealing process of the upper and lower parts of the pipeline 1 to be sealed and leak-filling areas and a process of sealing both ends of the metal lining pipe 6.
如图2所示，本发明的驱动压力产生后，在所述第三压力液注入孔道421和第二压力液注入孔道412没有对准并且未打开的工况下，所述环形密封组件5优先自动启动。As shown in FIG. 2, after the driving pressure of the present invention is generated, the annular seal assembly 5 is preferred when the third pressure fluid injection port 421 and the second pressure fluid injection port 412 are not aligned and not opened. Start automatically.
随着第一环形活塞511向右位移，将压力传递给第一弹性密封圈512，第四环形活塞523向左位移，将压力传递给第四弹性密封圈523，所述第一弹性密封圈512和第四弹性密封圈523的轴向宽度变小，所述第一弹性密封圈512和第四弹性密封圈523向径向膨胀，分别对管道1的内壁上下两端进行挤压，实现管道1的待复合区域上下两端的耐高压密封。As the first annular piston 511 moves to the right, pressure is transmitted to the first elastic sealing ring 512, and the fourth annular piston 523 is displaced to the left, transmitting pressure to the fourth elastic sealing ring 523, the first elastic sealing ring 512 The axial width of the fourth elastic sealing ring 523 and the fourth elastic sealing ring 523 are reduced. The first elastic sealing ring 512 and the fourth elastic sealing ring 523 expand in the radial direction to respectively squeeze the upper and lower ends of the inner wall of the pipeline 1 to realize the pipeline 1 High pressure-resistant seals at the upper and lower ends of the area to be compounded.
如图3所示，随着所述第二环形活塞512向左位移，将压力传递给第二弹性密封圈514，所述第三环形活塞521向右位移，将压力传递给第三弹性密封圈522；在驱动压力F的持续作用下，所述第二弹性密封圈514和第三弹性密封圈522的轴向宽度变小，所述第二弹性密封圈514和第三弹性密封圈522向径向膨胀，分别对金属内衬管6的内壁两端进行挤压，使得金属内衬管6的内壁两端产生径向塑性变形，挤压到管道1的内壁，实现对金属内衬管6两端内壁的耐高压密封。As shown in FIG. 3, as the second annular piston 512 is displaced to the left, pressure is transmitted to the second elastic sealing ring 514, and the third annular piston 521 is displaced to the right to transmit the pressure to the third elastic sealing ring 522; under the continuous action of the driving pressure F, the axial width of the second elastic sealing ring 514 and the third elastic sealing ring 522 becomes smaller, the second elastic sealing ring 514 and the third elastic sealing ring 522 radially The two ends of the inner wall of the metal lining pipe 6 are respectively squeezed to make radial plastic deformation at both ends of the inner wall of the metal lining pipe 6 and squeezed to the inner wall of the pipe 1 to realize the two High pressure-resistant seal on the inner wall of the end.
当所述第一弹性密封圈512、第二弹性密封圈514、第三弹性密封圈522和第四弹性密封圈523的轴向压缩变形达到设计要求的变形量时，也即保证了 设计要求的密封耐压水平。When the axial compression deformation of the first elastic sealing ring 512, the second elastic sealing ring 514, the third elastic sealing ring 522, and the fourth elastic sealing ring 523 reach the deformation amount required by the design, the design requirement is guaranteed Sealing pressure level.
(3)金属内衬管6的封堵补贴过程：(3) The plugging subsidy process of the metal lining pipe 6:
如图4所示，所述金属内衬管6两端内壁的耐高压密封完成后，所述第一压力液仓211内压力液对导向钢柱42继续施加压力，该压力超过剪切销43的设定压力值后，所述剪切销43断开，这时，所述导向钢柱43向右位移，直至在圆柱形连接筒体41的限位下无法移动时，所述第三压力液注入孔道421与第二压力液注入孔道412对准并且打开，位于第一压力液仓211中压力液通过打开的压力液注入通道注入到腔体61内。As shown in FIG. 4, after the high-pressure-resistant sealing of the inner walls at both ends of the metal lining pipe 6 is completed, the pressure liquid in the first pressure liquid chamber 211 continues to apply pressure to the guide steel column 42, which exceeds the shear pin 43 After the set pressure value of, the shear pin 43 is disconnected. At this time, the guide steel column 43 shifts to the right until it cannot move under the limit of the cylindrical connecting cylinder 41, the third pressure The liquid injection channel 421 is aligned with the second pressure liquid injection channel 412 and opened, and the pressure liquid located in the first pressure liquid chamber 211 is injected into the cavity 61 through the opened pressure liquid injection channel.
所述腔体61内的压力液对金属内衬管6的内壁均匀施加压力，使金属内衬管6产生塑性变形，整个金属内衬管6的外壁紧密挤压在管道1的内壁，实现封堵补贴。The pressure fluid in the cavity 61 uniformly applies pressure to the inner wall of the metal lining pipe 6 to cause the metal lining pipe 6 to undergo plastic deformation. The outer wall of the entire metal lining pipe 6 is tightly squeezed against the inner wall of the pipe 1 to achieve sealing. Block subsidies.
此时，整个金属内衬管6都已经产生了径向塑性变形，紧密复合到管道1的内壁，完成了封堵补贴过程。At this time, the entire metal lining pipe 6 has undergone radial plastic deformation and is tightly compounded to the inner wall of the pipeline 1, completing the plugging and subsidy process.
(5)本发明的撤回过程：(5) The withdrawal process of the present invention:
在所述金属内衬管6完成封堵补贴之后，井上设备停止通过上接头25向第一压力液仓211注入压力液，释放压力，本发明就处于泄压状态；After the metal liner 6 completes the plugging and subsidy, the uphole equipment stops injecting pressure fluid into the first pressure fluid tank 211 through the upper joint 25 to release the pressure, and the present invention is in a pressure relief state;
所述第一环形活塞511、第二环形活塞513、第三环形活塞521和第四环形活塞向初始位置退回，所述第一弹性密封圈512、第二弹性密封圈514、第三弹性密封圈522和第四弹性密封圈523在失去对应的环形活塞的压力后，逐步复位，这样，所述第一弹性密封圈512和第四弹性密封圈524脱离管道1的内壁两端、以及所述第二弹性密封圈514和第三弹性密封圈522脱离金属内衬管6的内壁两端之后，本发明处于复原状态，这时，可以将本发明撤回。The first annular piston 511, the second annular piston 513, the third annular piston 521, and the fourth annular piston return to the initial position, the first elastic sealing ring 512, the second elastic sealing ring 514, and the third elastic sealing ring 522 and the fourth elastic sealing ring 523 gradually reset after losing the pressure of the corresponding annular piston. In this way, the first elastic sealing ring 512 and the fourth elastic sealing ring 524 are separated from both ends of the inner wall of the pipe 1 and the second After the second elastic sealing ring 514 and the third elastic sealing ring 522 are separated from the two ends of the inner wall of the metal lining pipe 6, the present invention is in a restored state. At this time, the present invention can be withdrawn.
在整个撤回的过程中，因为所述金属内衬管6已经发生了塑性变形膨胀，所以即使撤回本发明，所述金属内衬管6依然保持紧密复合在管道1的内壁。During the entire withdrawal process, because the metal lining pipe 6 has undergone plastic deformation and expansion, even if the present invention is withdrawn, the metal lining pipe 6 remains tightly compounded on the inner wall of the pipeline 1.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above are only the preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention.

Claims (10)

  1. 一种管道复合内衬装置，该管道复合内衬装置应用在管道内，其特征在于，包括圆柱筒体、引向头、控制连接器、环形密封组件、金属内衬管；A pipeline composite lining device, which is applied in a pipeline, and is characterized in that it comprises a cylindrical cylinder, a steering head, a control connector, an annular sealing component, and a metal lining pipe;
    所述圆柱筒体包括第一圆柱筒体、连接管、第二圆柱筒体；所述第一圆柱筒体的一端用于注入压力液，另一端通过连接管与第二圆柱筒体的一端连接，所述第二圆柱筒体的另一端与引向头连接；所述第一圆柱筒体和第二圆柱筒体的径向上分别设置有若干个压力液注入孔道；The cylindrical body includes a first cylindrical body, a connecting tube, and a second cylindrical body; one end of the first cylindrical body is used for injecting pressure fluid, and the other end is connected to one end of the second cylindrical body through a connecting tube , The other end of the second cylindrical body is connected with the guide head; the first cylindrical body and the second cylindrical body are respectively provided with a plurality of pressure fluid injection holes in the radial direction;
    所述控制连接器设置在圆柱筒体的中心孔道内，用于连通第一圆柱筒体内的第一压力液仓、与连接管和第二圆柱筒体内的第二压力液仓；还用于通过与第一圆柱筒体上配合设置的压力液注入孔道将第一压力液仓中的压力液注入到第一圆柱筒体的外部；The control connector is arranged in the central hole of the cylindrical cylinder, and is used to communicate with the first pressure fluid tank in the first cylinder, the connecting pipe and the second pressure fluid tank in the second cylinder; The pressure fluid injection port provided in cooperation with the first cylinder body injects the pressure fluid in the first pressure fluid chamber to the outside of the first cylinder body;
    所述环形密封组件包括上环形密封组件、下环形密封组件，所述上环形密封组件套设在第一圆柱筒体上，用于在受到来自第一压力液仓的压力液的驱动后对管道的待复合区域上端和金属内衬管上端密封；所述下环形密封组件套设在第二圆柱筒体上，用于在受到来自第二压力液仓的压力液的驱动后对管道的待复合区域下端和金属内衬管下端密封；The ring seal assembly includes an upper ring seal assembly and a lower ring seal assembly. The upper ring seal assembly is sleeved on the first cylindrical cylinder and is used to control the pipeline after being driven by the pressure fluid from the first pressure fluid tank. The upper end of the area to be compounded is sealed with the upper end of the metal lining pipe; the lower ring-shaped sealing assembly is sleeved on the second cylindrical cylinder, and is used for the pipeline to be compounded after being driven by the pressure fluid from the second pressure fluid tank Seal the lower end of the area and the lower end of the metal lining pipe;
    所述金属内衬管套设在环形密封组件和圆柱筒体之外，并且与圆柱筒体的外壁之间形成容纳压力液的腔体。The metal lining tube is sleeved outside the annular sealing assembly and the cylindrical body, and forms a cavity containing pressure fluid between the outer wall of the cylindrical body and the annular sealing assembly.
  2. 根据权利要求1所述的管道复合内衬装置，其特征在于，所述控制连接器包括圆柱形连接筒体、导向钢柱、剪切销，所述导向钢柱通过剪切销固定在圆柱形连接筒体面向第一圆柱筒体中注入压力液的一端。The pipeline composite lining device according to claim 1, wherein the control connector comprises a cylindrical connecting cylinder, a guide steel column, and a shear pin, and the guide steel column is fixed to the cylindrical shape by the shear pin. The connecting cylinder faces the end of the first cylindrical cylinder where the pressure liquid is injected.
  3. 根据权利要求2所述的管道复合内衬装置，其特征在于，所述圆柱形连接筒体的轴向上设置连通第一压力液仓和第二压力液仓的第一压力液注入孔道，所述圆柱形连接筒体的径向上和第一圆柱筒体的径向上对应位置设置有连通的第二压力液注入孔道；所述导向钢柱上设置有能够与第二压力液注入孔道匹配的第三压力液注入孔道。The pipeline composite lining device according to claim 2, wherein the cylindrical connecting cylinder is provided with a first pressure fluid injection port communicating with the first pressure fluid tank and the second pressure fluid tank in the axial direction, so The cylindrical connecting cylinder is provided with a communicating second pressure fluid injection port in the radial direction and the corresponding position in the radial direction of the first cylinder; the guide steel column is provided with a second pressure fluid injection port that can be matched with the second pressure fluid injection port. Three pressure fluid is injected into the hole.
  4. 根据权利要求1-3任意一项所述的管道复合内衬装置，其特征在于，所述上环形密封组件包括第一环形活塞、第一弹性密封圈、第二环形活塞、第二弹性密封圈，所述第一环形活塞和第二环形活塞分别设置在第一圆柱筒体的两侧并且相对位移，所述第一环形活塞的位移方向上设置第一弹性密封圈，所述第二环形活塞的位移方向上设置第二弹性密封圈。The pipeline composite lining device according to any one of claims 1-3, wherein the upper annular sealing assembly comprises a first annular piston, a first elastic sealing ring, a second annular piston, and a second elastic sealing ring , The first annular piston and the second annular piston are respectively arranged on both sides of the first cylindrical cylinder and are relatively displaced, a first elastic sealing ring is arranged in the displacement direction of the first annular piston, and the second annular piston A second elastic sealing ring is arranged in the direction of displacement.
  5. 根据权利要求4所述的管道复合内衬装置，其特征在于，所述第一环形活塞抵接第一弹性密封圈的端面的远端面和第一圆柱筒体的一端之间形成第一环形活塞注液腔，所述第二环形活塞抵接第二弹性密封圈的端面的远端面和第一圆柱筒体的另一端之间形成第二环形活塞注液腔。The pipeline composite lining device according to claim 4, wherein a first ring shape is formed between the distal end surface of the end surface of the first annular piston abutting the first elastic sealing ring and one end of the first cylindrical body. Piston liquid injection cavity, a second circular piston liquid injection cavity is formed between the distal end surface of the end surface of the second annular piston abutting the second elastic sealing ring and the other end of the first cylindrical body.
  6. 根据权利要求5所述的管道复合内衬装置，其特征在于，所述第一环形活塞注液腔与第一圆柱筒体径向上的第四压力液注入通道连通；所述第二环形活塞注液腔与第一圆柱筒体径向上的第五压力液注入通道连通。The pipeline composite lining device according to claim 5, wherein the first annular piston injection cavity is in communication with a fourth pressure fluid injection passage in the radial direction of the first cylindrical body; the second annular piston injection The liquid cavity is communicated with the fifth pressure liquid injection channel in the radial direction of the first cylindrical barrel.
  7. 根据权利要求6所述的管道复合内衬装置，其特征在于，所述下环形密封组件包括第三环形活塞、第三弹性密封圈、第四环形活塞、第四弹性密封圈，所述第三环形活塞和第四环形活塞分别设置在第二圆柱筒体的两侧并且相对位移，所述第三环形活塞的位移方向上设置第三弹性密封圈，所述第四环形活塞的位移方向上设置第四弹性密封圈。The pipeline composite lining device according to claim 6, wherein the lower annular sealing assembly comprises a third annular piston, a third elastic sealing ring, a fourth annular piston, and a fourth elastic sealing ring. The annular piston and the fourth annular piston are respectively arranged on both sides of the second cylindrical body and are relatively displaced. A third elastic sealing ring is arranged in the displacement direction of the third annular piston, and a third elastic sealing ring is arranged in the displacement direction of the fourth annular piston. The fourth elastic sealing ring.
  8. 根据权利要求7所述的管道复合内衬装置，其特征在于，所述第三环形活塞抵接第三弹性密封圈的端面的远端面和第二圆柱筒体之间形成第三环形活塞注液腔，所述第四环形活塞抵接第四弹性密封圈的端面的远端面和第二圆柱筒体之间形成第四环形活塞注液腔。The pipeline composite lining device according to claim 7, wherein a third annular piston injection is formed between the distal end surface of the end face of the third annular piston abutting the third elastic sealing ring and the second cylindrical body. In the liquid cavity, a fourth annular piston liquid injection cavity is formed between the distal end surface of the end surface of the fourth annular piston abutting the fourth elastic sealing ring and the second cylindrical body.
  9. 根据权利要求8所述的管道复合内衬装置,其特征在于，所述第三环形活塞注液腔与第二圆柱筒体径向上的第六压力液注入通道连通；所述第四环形活塞注液腔与第二圆柱筒体径向上的第七压力液注入通道连通。The pipeline composite lining device according to claim 8, wherein the third annular piston injection cavity is in communication with a sixth pressure fluid injection channel in the radial direction of the second cylindrical body; the fourth annular piston injection The liquid cavity is communicated with the seventh pressure liquid injection channel in the radial direction of the second cylindrical barrel.
  10. 根据权利要求9所述的管道复合内衬装置，其特征在于，所述第二弹性密封圈、第三弹性密封圈分别与金属内衬管的内壁两端抵接；所述第一弹性 密封圈、第四弹性密封圈在轴向压缩和径向膨胀后，分别与管道的内壁两端抵接。The pipeline composite lining device according to claim 9, wherein the second elastic sealing ring and the third elastic sealing ring respectively abut against both ends of the inner wall of the metal lining pipe; the first elastic sealing ring , The fourth elastic sealing ring abuts against both ends of the inner wall of the pipeline after axial compression and radial expansion.
PCT/CN2019/100319 2019-08-12 2019-08-13 Compound lining apparatus for pipeline WO2021026749A1 (en)

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