CN212272117U - Butt joint device for underground safety valve control pipelines - Google Patents
Butt joint device for underground safety valve control pipelines Download PDFInfo
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- CN212272117U CN212272117U CN202021123549.7U CN202021123549U CN212272117U CN 212272117 U CN212272117 U CN 212272117U CN 202021123549 U CN202021123549 U CN 202021123549U CN 212272117 U CN212272117 U CN 212272117U
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Abstract
The utility model discloses a butt joint device of an underground safety valve control pipeline, which comprises a main body, a seal sleeve, a snap ring, a seal ring, a limit sleeve, a first limit shear pin and a second limit shear pin, wherein the seal sleeve is arranged at the lower part of the main body; the sealing sleeve is fixed on the main body by the first limiting shear pin; the outer wall of the main body above the sealing sleeve is provided with a clamping ring groove and a sealing ring groove, the sealing ring groove is arranged between the clamping ring groove and the sealing sleeve, and a clamping ring and a sealing ring are arranged in the clamping ring groove and the sealing ring groove; the limiting sleeve is sleeved at the lower end of the main body, and the limiting sleeve is fixed on the main body by the second limiting shear pin; the inside of subsurface safety valve sets up the butt joint hole that communicates with the hydraulic pressure chamber, and interfacing apparatus is from the below seal installation in butt joint hole to the hole, and the snap ring groove is located the top in butt joint hole, and the stop collar is located the below in butt joint hole, and the external diameter of stop collar is greater than the internal diameter in butt joint hole, and sealing ring and seal cover all laminate with the pore wall in butt joint hole. The operation of blowout prevention pipe string lifting is conveniently carried out, and the pipe lifting speed is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the oil field oil recovery gas production instrument technique and specifically relates to a interfacing apparatus of safety valve control pipeline in pit.
Background
The underground safety valve is installed in an oil gas well, and can timely close an underground production channel when a production facility is in a state of out of control due to fire alarm, pipeline breakage and irresistible natural disasters (such as earthquake, ice condition, strong typhoon and the like), so as to prevent environmental pollution and other safety accidents caused by oil gas leakage. A control pipeline of the downhole safety valve is communicated with a hydraulic cavity of the downhole safety valve through a butt joint device, hydraulic oil is added into the hydraulic cavity from the ground, as shown in figure 1, high-pressure liquid enters a hydraulic cavity e through a control pipeline a, a piston b is pushed to move downwards, a spring c is compressed, and the piston b jacks a valve plate d, so that the downhole safety valve is opened; the underground safety valve keeps an open state when the ground control pressure is kept; the ground control pressure is released, and the valve plate d resets under the action of a torsion spring at the rotating shaft of the valve plate d, so that the underground safety valve is closed.
As shown in fig. 1, currently, a control pipeline a of an underground safety valve is connected to the outside of an oil pipe and connected to the outer wall of the underground safety valve, during a high-pressure well workover process, the control pipeline is clamped on the outer wall of the oil pipe by a pipeline clamp, and during a high-pressure oil, gas and water well workover process, the installation position of the control pipeline a brings huge workload and construction risk to the lifting of a pipe column for blowout prevention operation.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a interfacing apparatus of safety valve control pipeline in pit realizes the butt joint of control pipeline and relief valve in the pit through this interfacing apparatus, can solve well and prevent spouting this technological problem of operation string of rising.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a butt joint device for a control pipeline of an underground safety valve comprises a main body, a sealing sleeve, a clamping ring, a sealing ring, a limiting sleeve, a first limiting shear pin and a second limiting shear pin, wherein the sealing sleeve is mounted at the lower part of the main body; the sealing sleeve is provided with a first radial positioning hole, and the first limiting shear pin penetrates through the first positioning hole to fix the sealing sleeve to the main body; the outer wall of the main body above the sealing sleeve is provided with a clamping ring groove and a sealing ring groove, the sealing ring groove is arranged between the clamping ring groove and the sealing sleeve, and a clamping ring and a sealing ring are arranged in the clamping ring groove and the sealing ring groove; the limiting sleeve is sleeved at the lower end of the main body and provided with a second radial positioning hole, and the second limiting shear pin penetrates through the second positioning hole to fix the limiting sleeve on the main body;
the inside of subsurface safety valve sets up the butt joint hole that communicates with the hydraulic pressure chamber, interfacing apparatus follows the below sealing installation in butt joint hole in the butt joint hole, the snap ring groove is located the top in butt joint hole, the stop collar is located the below in butt joint hole, the external diameter of stop collar is greater than the internal diameter in butt joint hole, the sealing ring with the seal cover all with the pore wall laminating in butt joint hole.
Further, the butt joint hole comprises a first hole section positioned at the upper part and a second hole section positioned at the lower part, the inner diameter of the first hole section is smaller than that of the second hole section, and the second hole section is communicated with a channel communicated with the hydraulic cavity; the sealing ring is matched with the first hole section, and the sealing sleeve is matched with the second hole section; and a sliding sleeve is further installed in the second hole section, the outer wall of the sliding sleeve is attached to the inner wall of the second hole section, and a shear pin for limiting the sliding sleeve is further installed in the second hole section, so that the sliding sleeve seals the channel.
Furthermore, the upper side and the lower side of the inner wall of the second hole section, which are communicated with the channel, are provided with first sealing grooves, the first sealing grooves are positioned at the matching position of the second hole section and the sliding sleeve, and first sealing rings are installed in the first sealing grooves.
Further, an axial channel and a radial channel communicated with the axial channel are arranged in the main body, the axial channel is communicated with the upper end face of the main body, and the radial channel is communicated with the main body in a radial direction; the inner wall of the lower part of the sealing sleeve is attached to the outer wall of the main body, a gap exists between the upper part of the sealing sleeve and the outer wall of the main body, and the upper part of the sealing sleeve is also provided with a radial flow guide hole; when the butt joint device is installed in the butt joint hole in a sealing mode, the radial channel is located on the upper portion of the sealing sleeve, and the flow guide hole corresponds to the channel.
Furthermore, the upper end of the axial channel is provided with a screw thread connected with a control pipeline joint.
Further, the inner wall and the outer wall of the lower portion of the sealing sleeve are both provided with a second sealing groove, and a second sealing ring is installed in the second sealing groove.
Further, the shearing force of the first limiting shear pin is smaller than that of the second limiting shear pin.
The utility model discloses a butt joint device of well downhole safety valve control pipeline seals the butt joint hole communicated with the hydraulic cavity through the butt joint device, when the downhole safety valve needs to be opened, a channel communicated with the hydraulic cavity can be adopted to supply hydraulic oil to the hydraulic cavity, and the downhole safety valve can be opened; when a safety accident occurs, the butt joint device and the butt joint hole are required to be separated, the control pipeline is pulled from the upper part, and after the second limiting shear pin is broken, the main body is separated from the butt joint hole, so that the pressure of the hydraulic cavity is relieved, and the underground safety valve is automatically closed. The butt joint device is arranged in the underground safety valve, correspondingly, the control pipeline connected with the butt joint device is arranged in the pipe column, a clamp used for fixing the control pipeline does not need to be arranged on the outer wall of the pipe column, when the well is overhauled, the butt joint device is unloaded from the safety valve through the control pipeline, the operation of preventing the blowout of the pipe column can be conveniently carried out, the pipe lifting speed of the blowout prevention operation can be greatly improved, and potential safety hazards are avoided.
Drawings
FIG. 1 is a schematic diagram of a hydraulic control line connected to a downhole safety valve in the prior art;
fig. 2 is a schematic view illustrating the installation of the docking device of the control pipeline of the downhole safety valve in the embodiment 1 of the present invention in docking with the downhole safety valve;
fig. 3 is a schematic structural diagram of a docking device of a downhole safety valve control pipeline provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a local sealing state between the docking device and the downhole safety valve in embodiment 1 of the present invention;
FIG. 5 is a schematic flow diagram of hydraulic oil in the state of FIG. 4;
fig. 6 is a schematic view of the docking device after being detached from the downhole safety valve in embodiment 1 of the present invention;
fig. 7 is a schematic view illustrating the installation of the docking device of the control pipeline of the downhole safety valve in the embodiment 2 of the present invention in docking with the downhole safety valve;
fig. 8 is a schematic structural diagram of a docking device of a downhole safety valve control pipeline provided in embodiment 2 of the present invention;
fig. 9 is a schematic structural view of a local sealing state between the docking device and the downhole safety valve in embodiment 2 of the present invention;
fig. 10 is a schematic view of the docking device after being detached from the downhole safety valve in embodiment 2 of the present invention;
in the figure:
1. a docking device; 11. a body; 111. an axial channel; 112. a radial channel; 12. a snap ring; 13. a seal ring; 14. sealing sleeves; 141. a flow guide hole; 142. a second seal ring; 15. a first limiting shear pin; 16. a limiting sleeve; 17. a second limiting shear pin; 18. threading; 2. a downhole safety valve; 21. a butt joint hole; 211. a first bore section; 212. a second bore section; 22. a sliding sleeve; 23. shearing the nails; 24. a channel; 25. a first seal ring; 3. a hydraulic chamber; 4. a control line connection.
Detailed Description
To clearly illustrate the design concept of the present invention, the following description is made with reference to the examples.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are described below clearly and completely with reference to the drawings in the examples of the present invention, and it is obvious that the described examples are only a part of examples of the present invention, but not all examples. Based on the middle examples of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish similar items and are not to be construed as requiring a particular order or sequence, and it is to be understood that such uses are interchangeable under appropriate circumstances.
The utility model provides a butting device for an underground safety valve control pipeline, which comprises a main body, a seal sleeve, a snap ring, a seal ring, a limit sleeve, a first limit shear pin and a second limit shear pin, wherein the seal sleeve is arranged at the lower part of the main body; the sealing sleeve is provided with a first radial positioning hole, and a first limiting shear pin penetrates through the first positioning hole to fix the sealing sleeve to the main body; the outer wall of the main body above the sealing sleeve is provided with a clamping ring groove and a sealing ring groove, the sealing ring groove is arranged between the clamping ring groove and the sealing sleeve, and a clamping ring and a sealing ring are arranged in the clamping ring groove and the sealing ring groove; the limiting sleeve is sleeved at the lower end of the main body and provided with a second radial positioning hole, and the second limiting shear pin penetrates through the second positioning hole to fix the limiting sleeve on the main body;
the inside of subsurface safety valve sets up the butt joint hole that communicates with the hydraulic pressure chamber, and interfacing apparatus is from the below seal installation in butt joint hole to the hole, and the snap ring groove is located the top in butt joint hole, and the stop collar is located the below in butt joint hole, and the external diameter of stop collar is greater than the internal diameter in butt joint hole, and sealing ring and seal cover all laminate with the pore wall in butt joint hole.
The utility model discloses a butt joint device of well downhole safety valve control pipeline seals the butt joint hole communicated with the hydraulic cavity through the butt joint device, when the downhole safety valve needs to be opened, a channel communicated with the hydraulic cavity can be adopted to supply hydraulic oil to the hydraulic cavity, and the downhole safety valve can be opened; when a safety accident occurs, the butt joint device and the butt joint hole are required to be separated, the control pipeline is pulled from the upper part, and after the second limiting shear pin is broken, the main body is separated from the butt joint hole, so that the pressure of the hydraulic cavity is relieved, and the underground safety valve is automatically closed. The butt joint device is arranged in the underground safety valve, correspondingly, the control pipeline connected with the butt joint device is arranged in the pipe column, a clamp used for fixing the control pipeline does not need to be arranged on the outer wall of the pipe column, when the well is overhauled, the butt joint device is unloaded from the safety valve through the control pipeline, the operation of preventing the blowout of the pipe column can be conveniently carried out, the pipe lifting speed of the blowout prevention operation can be greatly improved, and potential safety hazards are avoided.
In order to clarify the technical solution of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
As shown in fig. 2 to 6, a first embodiment of a docking device for a control pipeline of a downhole safety valve according to the present invention is provided, the docking device 1 includes a main body 11, a sealing sleeve 14, a snap ring 12, a sealing ring 13, a stop collar 16, a first stop shear pin 15 and a second stop shear pin 17, the sealing sleeve 14 is mounted to the lower portion of the main body 11; the sealing sleeve is provided with a first radial positioning hole, and a first limiting shear pin 15 penetrates through the first positioning hole to fix the sealing sleeve 14 to the main body 11; the outer wall of the main body 11 above the sealing sleeve 14 is provided with a clamping ring groove and a sealing ring groove, the sealing ring groove is arranged between the clamping ring groove and the sealing sleeve 14, and a clamping ring 12 and a sealing ring 13 are arranged in the clamping ring groove and the sealing ring groove; the limiting sleeve 16 is sleeved at the lower end of the main body 11, the limiting sleeve 16 is provided with a second radial positioning hole, and the second limiting shear pin 17 penetrates through the second positioning hole to fix the limiting sleeve 16 on the main body 11;
the inside setting of relief valve 2 in pit and the butt joint hole 21 of hydraulic pressure chamber 3 intercommunication, interfacing apparatus 1 is from the below sealing installation of butt joint hole 21 to the butt joint hole in, the snap ring groove is located the top of butt joint hole 21, stop collar 16 is located the below of butt joint hole 21, the external diameter of stop collar 16 is greater than the internal diameter of butt joint hole 21, sealing ring 13 and seal cover 14 all with the pore wall laminating of butt joint hole 21. Specifically, the docking hole 21 includes a first hole section 211 at an upper portion and a second hole section 212 at a lower portion, the first hole section 211 having an inner diameter smaller than that of the second hole section 212, the second hole section 212 communicating with the passage 24 communicating with the hydraulic pressure chamber 3; the sealing ring 13 is fitted with the first bore section 211, and the sealing sleeve 14 is fitted with the second bore section 212; the second hole section 212 is also internally provided with a sliding sleeve 22, the outer wall of the sliding sleeve 22 is attached to the inner wall of the second hole section 212, and the second hole section 212 is also internally provided with a shear pin 23 for limiting the sliding sleeve 22, so that the sliding sleeve 22 closes the channel 24. The upper side and the lower side of the inner wall of the second hole section 212 communicated with the channel 24 are respectively provided with a first sealing groove, the first sealing grooves are positioned at the matching positions of the second hole section 212 and the sliding sleeve 22, and the first sealing rings 25 are installed in the first sealing grooves, so that when the butt joint device 1 is not in butt joint with the underground safety valve 2, the sealing of the channel 24 by the slide way 22 can be ensured.
In particular, an axial passage 111 and a radial passage 112 are provided in the body 11, the axial passage 111 penetrating the upper end face of the body 11, and the radial passage 112 penetrating the body 11 radially; the inner wall of the lower part of the sealing sleeve 14 is attached to the outer wall of the main body 11, a gap exists between the upper part of the sealing sleeve 14 and the outer wall of the main body 11, and the upper part of the sealing sleeve 14 is also provided with a radial diversion hole 141; when the docking device 1 is sealingly mounted in the docking hole 21, the radial passage 112 is located at the upper part of the sealing sleeve 14, and the guiding hole 141 corresponds to the passage 24. The upper end of the axial channel 111 is provided with a thread 18 for connection to the control line connection 4. At this time, hydraulic oil may be input into the hydraulic chamber through the control line, where the arrow direction in fig. 5 is the direction of the arrow to open the downhole safety valve 2, and the hydraulic oil flows in the radial channel 112 through the axial channel 111, then sequentially enters the diversion hole 141 and the channel 24 corresponding to the diversion hole 141 through the main body 11 and the seal sleeve 14, and then enters the hydraulic chamber, so as to open the downhole safety valve 2. When an accident occurs and the underground safety valve 2 needs to be closed, liquid is stopped to be supplied to the hydraulic cavity 3 under ground control, then the control pipeline is pulled upwards, the second limiting shear pin 17 is broken, the main body 11 is pulled out from the butt joint hole 21, as shown in fig. 6, pressure relief of the hydraulic cavity 3 is achieved, and the underground safety valve is automatically closed. This safety valve control pipeline interfacing apparatus in pit can realize three kinds of functions: firstly, realizing the sealing butt joint with the interior of the underground safety valve 2; when the butt joint device 1 is hermetically installed in the butt joint hole 21, the butt joint device can be communicated with the hydraulic cavity 3, and hydraulic oil is input through a control pipeline to realize the opening of the underground safety valve 2; and thirdly, the main body 11 is pulled out from the butt joint hole 21, the pressure relief treatment is carried out on the hydraulic cavity 3, and the closing of the underground safety valve 2 is realized.
In this embodiment, the inner and outer walls of the lower portion of the sealing sleeve 14 are each provided with a second sealing groove into which a second sealing ring 142 is fitted. Ensuring the sealing of the sealing sleeve 14 with the body 11 and with the second bore section 212.
In this embodiment, the shearing force of the first limiting shear pin 15 is smaller than that of the second limiting shear pin 17, so that the second limiting shear pin 17 is prevented from being broken when the butting device 1 and the downhole safety valve 2 are in sealed butting.
As shown in fig. 2, 4 and 6, the docking process of the docking device 1 and the downhole safety valve 2 in the present embodiment is reflected:
the process of the downhole safety valve entering the well: as shown in fig. 2, after being connected with the docking device 1 through the control line joint 4, the control line is suspended in the downhole safety valve 2 to penetrate through the docking hole 21, the downhole safety valve 2 is sealed by the sliding sleeve 22, and at this time, the snap ring 12 and the sealing ring 12 are respectively sleeved in a snap ring groove and a sealing ring groove arranged on the main body 11;
the butt joint of the butt joint device 1 and the underground safety valve 2 and the opening process of the underground safety valve 2 are as follows: after the tubing string is put down, a fishing tool is used for fishing the control pipeline by utilizing steel wire operation or other operation and lifting a certain tensile force, so that the butt joint device 1 connected with the lower end of the control pipeline is butted with the butt joint hole 21 of the underground safety valve 2, as shown in figure 4, in the butt joint process, the sliding sleeve 22 moves upwards, the butt joint device 1 seals the channel 24, then the main body 11 is lifted upwards through the control pipeline, the fixing of the butt joint device 1 is realized through the first limiting shear pin 15, at the moment, the clamping ring 12 is separated from the clamping ring groove, is connected with a wellhead underground control pipeline control system and is installed with a wellhead for production, hydraulic oil is input into the hydraulic cavity 3 through the control pipeline through the axial channel 111 and the radial channel 112, and the underground safety;
closing the underground safety valve and lifting the pipe column: tear the well head open, increase power and lift the control line, make the spacing shear pin 17 of second of fixing on interfacing apparatus 1 broken, stop collar 16 drops from main part 11, main part 11 is deviate from butt joint hole 21, hydraulic oil flows out to 2 insides of downhole safety valve from passageway 24, accomplish the pressure release in hydraulic pressure chamber 3, downhole safety valve 2 closes by oneself, thus, owing to do not have the influence of fixed control pipeline checkpost, it is very convenient and rapid with supporting tool to prevent spouting the operation and play downhole tubular column, the construction degree of difficulty and the safe risk have been reduced greatly, and the work efficiency is improved.
Example 2
As shown in fig. 7-10, this embodiment is an improvement of the docking device 1 based on embodiment 1, and accordingly, the structure of the downhole safety valve 2 is also improved adaptively, and the improvement is that a channel for inputting hydraulic oil to the hydraulic chamber 3 is arranged on the end surface of the downhole safety valve 2, and a plug of the channel for inputting hydraulic oil is arranged on the end surface, and at this time, the docking device only provides the functions of sealing docking and releasing the hydraulic chamber.
As shown in fig. 7, 9 and 10, the docking process of the docking device 1 and the downhole safety valve 2 in the present embodiment is reflected:
the process of the downhole safety valve entering the well: as shown in fig. 7, after the control pipeline is connected with the docking device 1 through the control pipeline joint 4, the control pipeline is suspended in the downhole safety valve 2 to penetrate through the docking hole 21, the downhole safety valve 2 is sealed by the sliding sleeve 22, and at this time, the snap ring 12 and the sealing ring 12 are respectively sleeved in the snap ring groove and the sealing ring groove arranged on the main body 11;
the butt joint of the butt joint device 1 and the underground safety valve 2 and the opening process of the underground safety valve 2 are as follows: after the tubing string is put down, a fishing tool is used for fishing the control pipeline by utilizing steel wire operation or other operation and lifting a certain tensile force, so that the butt joint device 1 connected with the lower end of the control pipeline is butted with the butt joint hole 21 of the underground safety valve 2, as shown in figure 9, in the butt joint process, the sliding sleeve 22 moves upwards, the butt joint device 1 seals the channel 24, then the main body 11 is lifted upwards through the control pipeline, the butt joint device 1 is fixed through the first limiting shear pin 15, at the moment, the clamping ring 12 is separated from the clamping ring groove, is connected with a wellhead underground control pipeline control system and is installed with a wellhead for production, a plug on a hydraulic oil conveying channel in the underground safety valve 2 is opened, hydraulic oil is input into the hydraulic cavity 3, the underground safety valve 2 is opened, and after the underground safety valve 2 is opened, the channel for conveying the hydraulic;
closing the underground safety valve and lifting the pipe column: tear the well head open, increase power and lift the control line, make the spacing shear pin 17 of second of fixing on interfacing apparatus 1 broken, stop collar 16 drops from main part 11, main part 11 is deviate from butt joint hole 21, hydraulic oil flows out to 2 insides of downhole safety valve from passageway 24, accomplish the pressure release in hydraulic pressure chamber 3, downhole safety valve self-closing, thus, owing to the influence that does not have fixed control line checkpost, it is very convenient and rapid with supporting tool to prevent spouting the operation play downhole tubular column, the construction degree of difficulty and the safety risk have been reduced greatly, and the work efficiency is improved.
In the process, the butt joint device 1 can be sealed with the underground safety valve 2, the underground safety valve is guaranteed to be opened, the hydraulic cavity 3 can be decompressed, and the underground safety valve 2 is closed.
In the above embodiment, the terms "up" and "down" refer to the relative directions of the docking device 1 and the downhole safety valve 2 in use.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.
Claims (7)
1. The butt joint device for the control pipeline of the underground safety valve is characterized by comprising a main body, a sealing sleeve, a clamping ring, a sealing ring, a limiting sleeve, a first limiting shear pin and a second limiting shear pin, wherein the sealing sleeve is mounted at the lower part of the main body; the sealing sleeve is provided with a first radial positioning hole, and the first limiting shear pin penetrates through the first positioning hole to fix the sealing sleeve to the main body; the outer wall of the main body above the sealing sleeve is provided with a clamping ring groove and a sealing ring groove, the sealing ring groove is arranged between the clamping ring groove and the sealing sleeve, and a clamping ring and a sealing ring are arranged in the clamping ring groove and the sealing ring groove; the limiting sleeve is sleeved at the lower end of the main body and provided with a second radial positioning hole, and the second limiting shear pin penetrates through the second positioning hole to fix the limiting sleeve on the main body;
the inside of subsurface safety valve sets up the butt joint hole that communicates with the hydraulic pressure chamber, interfacing apparatus follows the below sealing installation in butt joint hole in the butt joint hole, the snap ring groove is located the top in butt joint hole, the stop collar is located the below in butt joint hole, the external diameter of stop collar is greater than the internal diameter in butt joint hole, the sealing ring with the seal cover all with the pore wall laminating in butt joint hole.
2. The docking device as claimed in claim 1, wherein the docking hole comprises a first hole section at an upper portion and a second hole section at a lower portion, the first hole section having an inner diameter smaller than that of the second hole section, the second hole section communicating with a passage communicating with the hydraulic pressure chamber; the sealing ring is matched with the first hole section, and the sealing sleeve is matched with the second hole section; and a sliding sleeve is further installed in the second hole section, the outer wall of the sliding sleeve is attached to the inner wall of the second hole section, and a shear pin for limiting the sliding sleeve is further installed in the second hole section, so that the sliding sleeve seals the channel.
3. The docking device as claimed in claim 2, wherein a first sealing groove is disposed on both upper and lower sides of an inner wall of the second bore section communicating with the channel, the first sealing groove is located at a fitting position of the second bore section and the sliding sleeve, and a first sealing ring is installed in the first sealing groove.
4. A docking device according to claim 2 wherein an axial passage is provided in said body through an upper end face of said body and a radial passage is provided in said body through which said body passes radially; the inner wall of the lower part of the sealing sleeve is attached to the outer wall of the main body, a gap exists between the upper part of the sealing sleeve and the outer wall of the main body, and the upper part of the sealing sleeve is also provided with a radial flow guide hole; when the butt joint device is installed in the butt joint hole in a sealing mode, the radial channel is located on the upper portion of the sealing sleeve, and the flow guide hole corresponds to the channel.
5. A docking device according to claim 4 wherein the upper end of the axial passage is provided with a screw thread for connection to a control line connector.
6. The docking device as claimed in claim 4, wherein the inner wall and the outer wall of the lower part of the sealing sleeve are provided with a second sealing groove, and a second sealing ring is installed in the second sealing groove.
7. The docking device as claimed in claim 1, wherein the shear force of the first retaining shear pin is less than the shear force of the second retaining shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123549.7U CN212272117U (en) | 2020-06-17 | 2020-06-17 | Butt joint device for underground safety valve control pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123549.7U CN212272117U (en) | 2020-06-17 | 2020-06-17 | Butt joint device for underground safety valve control pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212272117U true CN212272117U (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021123549.7U Active CN212272117U (en) | 2020-06-17 | 2020-06-17 | Butt joint device for underground safety valve control pipelines |
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| Country | Link |
|---|---|
| CN (1) | CN212272117U (en) |
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2020
- 2020-06-17 CN CN202021123549.7U patent/CN212272117U/en active Active
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