CN210509096U - Composite lining device for pipeline - Google Patents
Composite lining device for pipeline Download PDFInfo
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- CN210509096U CN210509096U CN201921298225.4U CN201921298225U CN210509096U CN 210509096 U CN210509096 U CN 210509096U CN 201921298225 U CN201921298225 U CN 201921298225U CN 210509096 U CN210509096 U CN 210509096U
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Abstract
The utility model discloses a composite lining device for pipelines, which comprises a cylindrical barrel, a guide head, a control connector, an annular sealing component and a metal lining pipe; one end of the cylindrical barrel is used for injecting pressure liquid, and the other end of the cylindrical barrel is connected with the guide head; the control connector is arranged in a central pore passage of the cylindrical barrel; the annular sealing assembly comprises an upper annular sealing assembly and a lower annular sealing assembly, the upper annular sealing assembly is sleeved on the first cylindrical barrel, and the lower annular sealing assembly is sleeved on the second cylindrical barrel; the metal lining pipe is sleeved outside the annular sealing assembly and the cylindrical barrel. The utility model discloses simple structure, reliable, construction convenience, operating cost are low, need not the initiating explosive device supplementary, need not the spare part and the auxiliary facilities that the cost is expensive, need not large-scale water conservancy fracturing truck.
Description
Technical Field
The utility model belongs to the technical field of the oil field oil recovery gas production, concretely relates to compound inside lining device of pipeline.
Background
In the process of development and production of oil and gas fields, various geological factors and manual measures can affect shaft sleeves in different degrees along with the increase of production time, so that the sleeves are broken and leaked, and corroded and perforated, or due to the production reason, when perforated holes of the shaft sleeves corresponding to a certain oil and gas reservoir layer need to be plugged, local areas of the shaft sleeves need to be plugged and repaired.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a composite lining device for pipelines.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the embodiment of the utility model provides a pipeline composite lining device, which is applied in a pipeline and comprises a cylindrical barrel, a guide head, a control connector, an annular sealing component and a metal lining pipe;
the cylindrical barrel comprises a first cylindrical barrel, a connecting pipe and a second cylindrical barrel; one end of the first cylindrical barrel is used for injecting pressure liquid, the other end of the first cylindrical barrel is connected with one end of a second cylindrical barrel through a connecting pipe, and the other end of the second cylindrical barrel is connected with a guide head; a plurality of pressure liquid injection pore channels are respectively arranged in the radial directions of the first cylindrical barrel and the second cylindrical barrel;
the control connector is arranged in a central pore passage of the cylindrical barrel and is used for communicating a first pressure liquid bin in the first cylindrical barrel with the connecting pipe and a second pressure liquid bin in the second cylindrical barrel; the first pressure liquid bin is also used for injecting pressure liquid in the first pressure liquid bin to the outside of the first cylindrical barrel through a pressure liquid injection pore channel matched with the first cylindrical barrel;
the annular sealing assembly comprises an upper annular sealing assembly and a lower annular sealing assembly, the upper annular sealing assembly is sleeved on the first cylindrical barrel and is used for sealing the upper end of a to-be-composited region of the pipeline and the upper end of the metal lining pipe after being driven by pressure liquid from the first pressure liquid bin; the lower annular sealing assembly is sleeved on the second cylindrical barrel and used for sealing the lower end of the to-be-composited region of the pipeline and the lower end of the metal lining pipe after being driven by pressure liquid from the second pressure liquid bin;
the metal lining pipe is sleeved outside the annular sealing assembly and the cylindrical barrel, and a cavity for containing pressure liquid is formed between the metal lining pipe and the outer wall of the cylindrical barrel.
In the above scheme, the control connector includes a cylindrical connection cylinder, a guide steel column, and a shear pin, and the guide steel column is fixed to one end of the cylindrical connection cylinder facing the first cylindrical cylinder, through the shear pin, where the pressure fluid is injected.
In the above scheme, a first pressure liquid injection pore channel for communicating the first pressure liquid bin and the second pressure liquid bin is arranged in the axial direction of the cylindrical connecting cylinder, and a second pressure liquid injection pore channel for communicating is arranged at a position corresponding to the radial direction of the first cylindrical cylinder in the radial direction of the cylindrical connecting cylinder; and a third pressure liquid injection pore passage which can be matched with the second pressure liquid injection pore passage is arranged on the guide steel column.
In the above scheme, go up annular seal assembly and include first annular piston, first elastic sealing circle, second annular piston, second elastic sealing circle, first annular piston and second annular piston set up respectively in the both sides of first cylinder barrel and relative displacement, set up first elastic sealing circle on the displacement direction of first annular piston, set up second elastic sealing circle on the displacement direction of second annular piston.
In the above scheme, a first annular piston liquid injection cavity is formed between the far-end surface of the first annular piston abutting against the first elastic sealing ring and one end of the first cylinder body, and a second annular piston liquid injection cavity is formed between the far-end surface of the second annular piston abutting against the second elastic sealing ring and the other end of the first cylinder body.
In the scheme, the first annular piston injection cavity is communicated with a fourth pressure liquid injection channel on the first cylindrical barrel in the radial direction; and the second annular piston liquid injection cavity is communicated with a fifth pressure liquid injection channel on the first cylindrical barrel in the radial direction.
In the above scheme, 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 third annular piston and the fourth annular piston are respectively arranged on two sides of the second cylindrical barrel and are displaced relatively, the third elastic sealing ring is arranged in the displacement direction of the third annular piston, and the fourth elastic sealing ring is arranged in the displacement direction of the fourth annular piston.
In the above scheme, a third annular piston liquid injection cavity is formed between the distal end face of the third annular piston abutting against the third elastic sealing ring and the second cylindrical barrel, and a fourth annular piston liquid injection cavity is formed between the distal end face of the fourth annular piston abutting against the fourth elastic sealing ring and the second cylindrical barrel.
In the scheme, the third annular piston injection cavity is communicated with a sixth pressure liquid injection channel on the second cylindrical barrel in the radial direction; and the fourth annular piston liquid injection cavity is communicated with a seventh pressure liquid injection channel on the second cylindrical barrel in the radial direction.
In the above scheme, the second elastic sealing ring and the third elastic sealing ring are respectively abutted against two ends of the inner wall of the metal lining pipe; and the first elastic sealing ring and the fourth elastic sealing ring are respectively abutted with two ends of the inner wall of the pipeline after being compressed in the axial direction and expanded in the radial direction.
Compared with the prior art, the utility model discloses simple structure, reliable, construction convenience, operating cost are low, need not the priming sytem and assist, need not spare part and auxiliary facilities that the cost is expensive, need not large-scale water conservancy fracturing truck.
Drawings
Fig. 1 is a schematic structural view of a composite lining device for a pipeline according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a composite lining device for a pipeline according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a composite lining device for pipelines according to an embodiment of the present invention after sealing two ends of a metal lining pipe;
fig. 4 is a schematic structural view of the composite lining device for pipeline after sealing the whole metal lining pipe according to the embodiment of the present invention.
Wherein, 1-pipeline, 2-cylinder body, 3-guide head, 4-control connector, 5-annular sealing component, 6-metal lining pipe, 21-first cylinder body, 22-connecting pipe, 23-second cylinder body, 24-upper joint, 211-first pressure liquid cabin, 221-second pressure liquid cabin, 212-fourth pressure liquid injection channel, 213-fifth pressure liquid injection channel, 231-sixth pressure liquid injection channel, 232-seventh pressure liquid injection channel, 61-cavity, 41-cylindrical connecting cylinder body, 42-guide steel column, 43-shear pin, 411-first pressure liquid injection pore channel, 412-second pressure liquid injection pore channel, 421-third pressure liquid injection pore channel, 51-upper annular sealing component, 52-lower annular sealing component, 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 liquid injection cavity, 5131-second annular piston liquid injection cavity, 5211-third annular piston liquid injection cavity and 5231-fourth annular piston liquid injection cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a compound inside lining device of pipeline, this inside lining recombiner uses in pipeline 1, as shown in fig. 1, this compound inside lining device of pipeline uses in pipeline 1, including cylinder 2, leading to head 3, control connector 4, annular seal assembly 5, metal inside lining pipe 6;
the cylindrical barrel 2 comprises a first cylindrical barrel 21, a connecting pipe 22 and a second cylindrical barrel 23 which are connected in sequence; one end of the first cylinder 21 is used for injecting pressure liquid, and the other end of the second cylinder 23 is connected with the guide head 3; a plurality of pressure liquid injection pore channels are respectively arranged in the radial directions of the first cylindrical barrel 21 and the second cylindrical barrel 23;
the cylindrical barrel 2 comprises a first cylindrical barrel 21, a connecting pipe 22 and a second cylindrical barrel 23 which are connected in sequence; one end of the first cylinder 21 is used for injecting pressure liquid, and the other end of the second cylinder 23 is connected with the guide head 3; a plurality of pressure liquid injection pore channels are respectively arranged in the radial directions of the first cylindrical barrel 21 and the second cylindrical barrel 23;
the control connector 4 is arranged in a central hole channel of the first cylindrical barrel 21 and is used for communicating a first pressure liquid chamber 211 in the second cylindrical barrel 21 with a connecting pipe 22 and a second pressure liquid chamber 221 in the second cylindrical barrel 23; the pressure liquid injection hole is matched with the first cylinder body 21 to inject the pressure liquid in the first pressure liquid chamber 211 to the outside of the first cylinder body 21;
the annular sealing assembly 5 comprises an upper annular sealing assembly 51 and a lower annular sealing assembly 52, wherein the upper annular sealing assembly 51 is sleeved on the first cylindrical barrel 21 and is used for sealing the upper end of the region to be composited of the pipeline 1 and the upper end of the metal lining pipe 6 after being driven by pressure liquid from the first pressure liquid bin 211; the lower annular sealing assembly 52 is sleeved on the second cylindrical barrel 23 and is used for sealing the lower end of the to-be-composited area of the pipeline 1 and the lower end of the metal lining pipe 6 after being driven by pressure liquid from the second pressure liquid bin 221;
the metal lining pipe 6 is sleeved outside the annular sealing component 5 and the cylindrical barrel 2, and a cavity 61 for containing pressure liquid is formed between the metal lining pipe and the outer wall of the cylindrical barrel 2.
Thus, after pressure fluid is injected through one end of the cylindrical barrel 2, the pressure fluid in the first pressure fluid chamber 211 and the second pressure fluid chamber 221 drives the annular sealing component 5 to displace through a pressure fluid injection pore channel, so as to realize axial compression and radial expansion of the annular sealing component 5, perform high pressure resistant sealing on the upper end and the lower end of the to-be-composited region of the pipeline 1, seal the upper end and the lower end of the to-be-composited region in the pipeline 1, extrude the two ends of the inner wall of the metal lining pipe 6, so as to generate radial plastic deformation on the two ends of the metal lining pipe 6, attach to the inner wall of the pipeline 1, further realize high pressure resistant sealing on the two ends of the metal lining pipe 6, then, the pressure fluid in the first pressure fluid chamber 211 continuously applies pressure to the control connector 4, and after the pressure applied to the control connector 4 exceeds a set pressure value, the pressure fluid injection pore channel for communicating the first pressure fluid chamber 211, the control connector 4 and the cavity 61 is, pressure liquid pours into cavity 61 into, pressure liquid in the cavity 61 evenly exerts pressure to the inner wall of bushing pipe 6 in the metal for bushing pipe 6 in the metal produces radial plastic deformation, and finally the outer wall of bushing pipe 6 in the whole metal is closely attached at the inner wall of pipeline 1, thereupon, stops the pressure liquid injection of 2 one ends of cylinder barrel, release pressure, annular seal subassembly 5 resets, withdraws from the utility model discloses, and bushing pipe 6 still keeps motionless in the metal, realizes the shutoff subsidy.
One end of the first cylinder 21 for injecting pressure fluid is connected with the aboveground equipment through an upper joint 24.
The connecting pipe 22 may be a hose to realize the flexible connection between the first cylindrical body 21 and the second cylindrical body 23, and of course, the length and thickness of the connecting pipe 22 may also be determined as required.
The connecting tube 22 may also be a sleeve or the like, so as to realize a rigid connection between the first cylinder 21 and the second cylinder 23.
The control connector 4 comprises a cylindrical connecting cylinder 41, a guide steel column 42, and a shear pin 43, wherein the guide steel column 42 is fixed on the side of the cylindrical connecting cylinder 41 facing the first cylindrical cylinder 21, which is filled with the pressure fluid, by the shear pin 43.
A first pressure liquid injection pore passage 411 communicated with the first pressure liquid bin 211 and the second pressure liquid bin 221 is arranged in the axial direction of the cylindrical connecting cylinder 41, and a second pressure liquid injection pore passage 412 communicated with the radial direction of the cylindrical connecting cylinder 41 and the radial direction of the first cylindrical cylinder 21 are arranged at corresponding positions in the radial direction; the guide steel column 42 is provided with a third pressure fluid injection hole 421 capable of matching with the second pressure fluid injection hole 412.
The first pressure liquid injection hole 411 and the third pressure liquid injection hole 421 are staggered holes, and the first pressure liquid injection hole 411 is always communicated with the first pressure liquid chamber 211 and the second pressure liquid chamber 221.
The pressure liquid in the first pressure liquid chamber 211 applies pressure to the guide steel column 42, when 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 rightward until the guide steel column cannot move under the limit of the cylindrical connection cylinder 41, the third pressure liquid injection hole 421 and the second pressure liquid injection hole 412 are opened, and the pressure liquid in the first pressure liquid chamber 211 is injected into the cavity 61 through the opened pressure liquid injection hole.
The guiding steel columns 42 are subjected to a pressure exceeding the set pressure value of the shear pins 43 only after the annular seal assembly 5 reaches the limit of axial compression and radial expansion, so that it is ensured that the metal lined pipe 6 is plugged and repaired only after the two ends of the inner wall of the metal lined pipe 6 are sealed.
The upper annular sealing assembly 51 comprises a first annular piston 511, a first elastic sealing ring 512, a second annular piston 513 and a second elastic sealing ring 514, wherein the first annular piston 511 and the second annular piston 513 are respectively arranged at two sides of the first cylindrical barrel 21 and are relatively displaced, the first elastic sealing ring 512 is arranged in the displacement direction of the first annular piston 511, and the second elastic sealing ring 514 is arranged in the displacement direction of the second annular piston 513.
A first annular piston liquid injection cavity 5111 is formed between the distal end surface of the first annular piston 511 abutted against the first elastic sealing ring 512 and one end of the first cylinder body 21, and a second annular piston liquid injection cavity 5131 is formed between the distal end surface of the second annular piston 513 abutted against the second elastic sealing ring 514 and the other end of the first cylinder body 21.
The first annular piston liquid injection cavity 5111 is communicated with the fourth pressure liquid injection channel 212 in the radial direction of the first cylinder body 21; the second annular piston liquid injection chamber 5131 communicates with the fifth pressure liquid injection passage 213 in the radial direction of the first cylinder 21.
The lower annular sealing 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, where the third annular piston 521 and the fourth annular piston 523 are respectively disposed at two sides of the second cylindrical barrel 23 and are displaced relatively, the third elastic sealing ring 522 is disposed in a displacement direction of the third annular piston 521, and the fourth elastic sealing ring 524 is disposed in a displacement direction of the fourth annular piston 523.
A third annular piston priming chamber 5211 is formed between the distal end surface of the third annular piston 521 abutted against the third elastic sealing ring 522 and the second cylindrical barrel 23, and a fourth annular piston priming chamber 5231 is formed between the distal end surface of the fourth annular piston 523 abutted against the fourth elastic sealing ring 524 and the second cylindrical barrel 23.
The third annular piston injection chamber 5211 is communicated with the sixth pressure liquid injection passage 231 in the radial direction of the second cylindrical barrel 23; the fourth annular piston injection chamber 5231 is communicated with the seventh pressure liquid injection passage 232 in the radial direction of the second cylinder 23.
The pressure liquid in the first pressure liquid chamber 211 is injected into the first annular piston injection cavity 5111 through the fourth pressure liquid injection channel 212, and pushes the first annular piston 511 to displace rightward; the pressure fluid in the first pressure fluid reservoir 211 is also injected into the second annular piston injection chamber 5131 through the fifth pressure fluid injection passage 213, and pushes the second annular piston 513 to displace leftward.
Similarly, the pressure fluid in the second pressure fluid reservoir 221 is injected into the third annular piston injection chamber 5211 through the sixth pressure fluid injection passage 231, and pushes the third annular piston 53 to displace rightward; the pressure fluid in the second pressure fluid chamber 221 is also injected into the fourth annular piston injection chamber 5231 through the seventh pressure fluid injection passage 232, and pushes the fourth annular piston 523 to move leftward.
The second elastic sealing ring 514 and the third elastic sealing ring 522 are respectively abutted against two ends of the inner wall of the metal lining pipe 6; the first elastic sealing ring 512 and the fourth elastic sealing ring 524 are respectively abutted against two ends of the inner wall of the pipeline 1 after being compressed in the axial direction and expanded in the radial direction.
The pressure fluid in the first pressure fluid chamber 211 is injected into the first annular piston injection chamber 5111 through the fourth pressure fluid injection hole 212, and drives the first annular piston 511 to displace rightward, and the first annular piston 511 transmits rightward pressure to the first elastic sealing ring 512; the pressure fluid in the first pressure fluid chamber 211 is also injected into the second annular piston injection chamber 5131 through the fifth pressure fluid injection passage 213, so as to push the second annular piston 513 to displace leftward, and the second annular piston 5131 transmits leftward pressure to the second elastic sealing ring 513.
Similarly, the pressure fluid in the second pressure fluid chamber 221 is injected into the third annular piston injection chamber 5211 through the sixth pressure fluid injection hole 231, and drives the third annular piston 521 to displace rightward, the third annular piston 521 transmits a rightward pressure to the third elastic sealing ring 522, the pressure fluid in the second pressure fluid chamber 221 is also injected into the fourth annular piston injection chamber 5231 through the seventh pressure fluid injection passage 232, the fourth annular piston 523 is pushed to displace leftward, and the fourth annular piston 523 transmits a leftward pressure to the fourth elastic sealing ring 524.
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 generate axial compression and radial expansion after being respectively subjected to pressure; the first elastic sealing ring 512 and the fourth elastic sealing ring 523 are pressed to generate axial compression and radial expansion and then are extruded with two ends of the inner wall of the pipeline 1 to realize high-pressure-resistant sealing of the upper part and the lower part of the area to be composited of the pipeline 1, the second elastic sealing ring 514 and the third elastic sealing ring 522 are pressed to generate axial compression and radial expansion and then are extruded with two ends of the inner wall of the metal lining pipe 6, and finally, high-pressure-resistant sealing of the upper end and the lower end of the area to be composited of the pipeline 1 and two ends of the inner wall of the metal lining pipe 6 is realized.
The embodiment of the utility model provides a working process as follows:
(1) generation of driving pressure:
the well equipment injects pressure fluid into the first pressure fluid chamber 211 through the upper joint 24, the pressure fluid in the first pressure fluid chamber 21 is also injected into the second pressure fluid chamber 221 through the first pressure fluid injection hole 411 of the control connector 4, and under the action of the continuous injection of the pressure fluid into the upper joint 24, the pressure fluid in the first pressure fluid chamber 211 and the second pressure fluid chamber 221 generates a driving pressure F;
the pressure liquid in the first pressure liquid chamber 211 is injected into the first annular piston injection cavity 5111 through the fourth pressure liquid injection channel 212, and pushes the first annular piston 511 to displace rightward; the pressure fluid in the first pressure fluid reservoir 211 is also injected into the second annular piston injection chamber 5131 through the fifth pressure fluid injection passage 213, and pushes the second annular piston 513 to displace leftward.
Similarly, the pressure fluid in the second pressure fluid reservoir 221 is injected into the third annular piston injection chamber 5211 through the sixth pressure fluid injection passage 231, and pushes the third annular piston 53 to displace rightward; the pressure fluid in the second pressure fluid chamber 221 is also injected into the fourth annular piston injection chamber 5231 through the seventh pressure fluid injection passage 232, and pushes the fourth annular piston 523 to move leftward.
(2) Starting a sealing process:
the sealing process includes the upper and lower sealing processes of the region to be sealed and leak-repaired of the pipeline 1 and the two ends of the metal lining pipe 6.
As shown in fig. 2, after the driving pressure is generated, the annular sealing assembly 5 is preferably automatically started under the condition that the third pressure fluid injection hole 421 and the second pressure fluid injection hole 412 are not aligned and not opened.
Along with the right displacement of first annular piston 511, transmit pressure to first elastic sealing ring 512, fourth annular piston 523 displaces left, transmits pressure to fourth elastic sealing ring 523, the axial width of first elastic sealing ring 512 and fourth elastic sealing ring 523 diminishes, first elastic sealing ring 512 and fourth elastic sealing ring 523 radially expand, extrude both ends about the inner wall of pipeline 1 respectively, realize pipeline 1 treat the regional high pressure resistant seal at both ends about the complex region.
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, pressure is transmitted to the third elastic sealing ring 522; under the continuous effect of driving pressure F, the axial width of second elastic sealing ring 514 and third elastic sealing ring 522 diminishes, second elastic sealing ring 514 and third elastic sealing ring 522 are to radial expansion, extrude the inner wall both ends of bushing pipe 6 in the metal respectively for the inner wall both ends of bushing pipe 6 in the metal produce radial plastic deformation, extrude the inner wall of pipeline 1, realize the high pressure resistant sealed of the inner wall of bushing pipe 6 both ends in the metal.
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 reaches the deformation amount required by the design, the sealing pressure-resistant level required by the design is also ensured.
(3) Plugging and patching process of the metal lining pipe 6:
as shown in fig. 4, after the high pressure resistant sealing of the inner walls of the two ends of the metal lining tube 6 is completed, the pressure fluid in the first pressure fluid chamber 211 continues to apply pressure to the guide steel column 42, and 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 rightward until the guide steel column cannot move under the limit of the cylindrical connection cylinder 41, the third pressure fluid injection hole 421 is aligned with the second pressure fluid injection hole 412 and is opened, and the pressure fluid in the first pressure fluid chamber 211 is injected into the cavity 61 through the opened pressure fluid injection hole.
The pressure liquid in the cavity 61 uniformly applies pressure to the inner wall of the metal lining pipe 6, so that the metal lining pipe 6 generates plastic deformation, the outer wall of the whole metal lining pipe 6 is tightly extruded on the inner wall of the pipeline 1, and plugging and patching are realized.
At this time, the whole metal lining pipe 6 is subjected to radial plastic deformation and is tightly compounded to the inner wall of the pipeline 1, and the plugging and patching process is completed.
(5) The utility model discloses a withdraw the process:
after the metal lining pipe 6 completes plugging and patching, the aboveground equipment stops injecting pressure liquid into the first pressure liquid bin 211 through the upper connector 25 to release pressure, and the pressure relief device is in a pressure relief state;
first annular piston 511, second annular piston 513, third annular piston 521 and fourth annular piston return to initial position, first elasticity sealing washer 512, second elasticity sealing washer 514, third elasticity sealing washer 522 and fourth elasticity sealing washer 523 are after losing the pressure of the annular piston that corresponds, progressively reset, like this, first elasticity sealing washer 512 and fourth elasticity sealing washer 524 break away from the inner wall both ends of pipeline 1 and after second elasticity sealing washer 514 and third elasticity sealing washer 522 break away from the inner wall both ends of bushing pipe 6 in the metal, the utility model discloses be in the recovering state, at this moment, can with the utility model discloses withdraw.
During the entire withdrawal process, the metal-lined pipe 6 remains tightly laminated to the inner wall of the pipeline 1 even if the present invention is withdrawn, because the metal-lined pipe 6 has already been expanded by plastic deformation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A composite lining device for a pipeline is applied in the pipeline and is characterized by comprising a cylindrical barrel, a guide head, a control connector, an annular sealing assembly and a metal lining pipe;
the cylindrical barrel comprises a first cylindrical barrel, a connecting pipe and a second cylindrical barrel; one end of the first cylindrical barrel is used for injecting pressure liquid, the other end of the first cylindrical barrel is connected with one end of a second cylindrical barrel through a connecting pipe, and the other end of the second cylindrical barrel is connected with a guide head; a plurality of pressure liquid injection pore channels are respectively arranged in the radial directions of the first cylindrical barrel and the second cylindrical barrel;
the control connector is arranged in a central pore passage of the cylindrical barrel and is used for communicating a first pressure liquid bin in the first cylindrical barrel with the connecting pipe and a second pressure liquid bin in the second cylindrical barrel; the first pressure liquid bin is also used for injecting pressure liquid in the first pressure liquid bin to the outside of the first cylindrical barrel through a pressure liquid injection pore channel matched with the first cylindrical barrel;
the annular sealing assembly comprises an upper annular sealing assembly and a lower annular sealing assembly, the upper annular sealing assembly is sleeved on the first cylindrical barrel and is used for sealing the upper end of a to-be-composited region of the pipeline and the upper end of the metal lining pipe after being driven by pressure liquid from the first pressure liquid bin; the lower annular sealing assembly is sleeved on the second cylindrical barrel and used for sealing the lower end of the to-be-composited region of the pipeline and the lower end of the metal lining pipe after being driven by pressure liquid from the second pressure liquid bin;
the metal lining pipe is sleeved outside the annular sealing assembly and the cylindrical barrel, and a cavity for containing pressure liquid is formed between the metal lining pipe and the outer wall of the cylindrical barrel.
2. The composite lining device for pipe according to claim 1, wherein said control connector comprises a cylindrical connecting cylinder, a guiding steel column, and a shear pin, said guiding steel column is fixed to the end of the cylindrical connecting cylinder facing the first cylindrical cylinder, which is filled with the pressure fluid, by the shear pin.
3. The composite lining device for the pipeline according to claim 2, wherein a first pressure liquid injection hole communicated with the first pressure liquid chamber and a second pressure liquid chamber is formed in the axial direction of the cylindrical connecting cylinder body, and a second pressure liquid injection hole communicated with the first pressure liquid chamber and the second pressure liquid chamber is formed in a position corresponding to the first cylinder body in the radial direction of the cylindrical connecting cylinder body; and a third pressure liquid injection pore passage which can be matched with the second pressure liquid injection pore passage is arranged on the guide steel column.
4. The composite lining device for pipes of any one of claims 1 to 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 two sides of the first cylindrical barrel and are relatively displaced, the first elastic sealing ring is arranged in the displacement direction of the first annular piston, and the second elastic sealing ring is arranged in the displacement direction of the second annular piston.
5. The composite lining device for pipes of claim 4, wherein the first annular piston abuts against the distal end surface of the first elastic sealing ring and forms a first annular piston priming chamber with one end of the first cylindrical barrel, and the second annular piston abuts against the distal end surface of the second elastic sealing ring and forms a second annular piston priming chamber with the other end of the first cylindrical barrel.
6. The composite lining device for pipe as claimed in claim 5, wherein the first annular piston liquid injection cavity is communicated with a fourth pressure liquid injection channel in the radial direction of the first cylinder; and the second annular piston liquid injection cavity is communicated with a fifth pressure liquid injection channel on the first cylindrical barrel in the radial direction.
7. The composite lining device for pipelines 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 third annular piston and the fourth annular piston are respectively arranged at two sides of the second cylindrical barrel and are displaced relatively, the third elastic sealing ring is arranged in the displacement direction of the third annular piston, and the fourth elastic sealing ring is arranged in the displacement direction of the fourth annular piston.
8. The composite lining device for pipes of claim 7, wherein said third annular piston abuts against the distal end surface of the third elastic sealing ring to form a third annular piston priming chamber with the second cylindrical barrel, and said fourth annular piston abuts against the distal end surface of the fourth elastic sealing ring to form a fourth annular piston priming chamber with the second cylindrical barrel.
9. The composite lining device for pipe according to claim 8, wherein said third annular piston injection chamber is in communication with a sixth pressurized fluid injection passage in the radial direction of the second cylindrical barrel; and the fourth annular piston liquid injection cavity is communicated with a seventh pressure liquid injection channel on the second cylindrical barrel in the radial direction.
10. The composite lining device for pipelines according to claim 9, wherein the second elastic sealing ring and the third elastic sealing ring are respectively abutted against two ends of the inner wall of the metal lining pipe; and the first elastic sealing ring and the fourth elastic sealing ring are respectively abutted with two ends of the inner wall of the pipeline after being compressed in the axial direction and expanded in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298225.4U CN210509096U (en) | 2019-08-12 | 2019-08-12 | Composite lining device for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298225.4U CN210509096U (en) | 2019-08-12 | 2019-08-12 | Composite lining device for pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN210509096U true CN210509096U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921298225.4U Active CN210509096U (en) | 2019-08-12 | 2019-08-12 | Composite lining device for pipeline |
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| CN (1) | CN210509096U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485960A (en) * | 2019-08-12 | 2019-11-22 | 屈波 | Pipeline compound lining device |
| CN112973890A (en) * | 2021-04-02 | 2021-06-18 | 晋中铭昕科技有限公司 | Pipeline cracking device |
| CN113236172A (en) * | 2021-06-09 | 2021-08-10 | 中国石油大学(华东) | Down-hole screen pipe hydraulic forming patching tool and method |
-
2019
- 2019-08-12 CN CN201921298225.4U patent/CN210509096U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485960A (en) * | 2019-08-12 | 2019-11-22 | 屈波 | Pipeline compound lining device |
| CN112973890A (en) * | 2021-04-02 | 2021-06-18 | 晋中铭昕科技有限公司 | Pipeline cracking device |
| CN113236172A (en) * | 2021-06-09 | 2021-08-10 | 中国石油大学(华东) | Down-hole screen pipe hydraulic forming patching tool and method |
| CN113236172B (en) * | 2021-06-09 | 2022-05-17 | 中国石油大学(华东) | Down-hole screen pipe hydraulic forming patching tool and method |
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