CN110289589B - Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof - Google Patents
Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof Download PDFInfo
- Publication number
- CN110289589B CN110289589B CN201910525105.1A CN201910525105A CN110289589B CN 110289589 B CN110289589 B CN 110289589B CN 201910525105 A CN201910525105 A CN 201910525105A CN 110289589 B CN110289589 B CN 110289589B
- Authority
- CN
- China
- Prior art keywords
- pressure
- threading
- wiring
- hole
- gasket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses ultrahigh pressure CO2Cause and split tubulose electric line sealing device, including the high pressure seal end cap, the wiring is pressed and is emitted, the gasket, the threading tip, withstand voltage sleeve pipe and bottom end cap, the lateral surface of high pressure seal end cap and the central hole sealing connection in the threading tip, threading tip upper portion outer lane has been seted up a plurality of wiring and has been pressed and emit the mounting hole, third through wires hole and safe release hole have been seted up to wiring and is pressed and emit the mounting hole lower part, the gasket sets up in the wiring is pressed and is emitted the mounting hole, wiring is pressed and is emitted outside lower part and wiring and is pressed and emit the inboard sealing connection in the mounting hole, the wiring is pressed and is emitted the upper portion of lower extreme extrusion gasket, the lower extreme and the withstand voltage sheathed tube upper end. The invention also discloses ultrahigh pressure CO2A method for using the fracture-inducing pipeline sealing device. The invention provides ultrahigh pressure CO2The sealing device for the electric line of the fracturing pipe and the using method thereof have the advantages of simple structure, low cost, easy operation of the method and no leakage when the sealing gas pressure reaches up to 30 MPa.
Description
Technical Field
The invention relates to ultrahigh pressure CO2A fracturing pipe electric line sealing device and a using method thereof belong to the technical field of high-pressure gas expansion rock breaking devices.
Background
The carbon dioxide phase change expansion cracking rock breaking method is widely applied to the field of non-explosive blasting rock breaking, such as foundation pit excavation, tunnel excavation, mine exploitation, municipal transportation and the like.
High pressure CO of cracking tube2The sealing problem of the electric line directly influences the rock breaking effect of gas blasting, and the traditional CO method2The method for sealing the electric line of the fracturing pipe mainly comprises two methods, one method is to directly thermally shrink the electric wire into plastic, and the sealing effect is poor due to the fact that the sealing gas pressure is about 10MPa through plastic sealing; the other method is a method adopting a thimble to seal high-pressure gas by extrusion deformation of a gasket, and the method can seal gas below 15MPa and is used for ultrahigh-pressure CO close to 30MPa2The gas pressure, then, a significant gas leakage phenomenon occurs. In addition, the structure of the method is complex and the cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provide the ultrahigh pressure CO which has the advantages of simple structure, low cost, easy operation of the method and no leakage, and the pressure of sealing gas can reach 30MPa2A split-pipe electrical line sealing device and method of use.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
ultrahigh pressure CO2The cracking tube electric line sealing device comprises a high-pressure sealing plug, a wiring gland, a gasket, a threading end part, a pressure-resistant sleeve and a bottom plug, the outer side surface of the high-pressure sealing plug is connected with a central hole in the threading end part in a sealing way, the centers of the wiring press cap and the gasket are respectively provided with a first threading hole and a second threading hole, a plurality of wiring press-cap mounting holes are formed in the outer ring of the upper part of the threading end part, a third threading hole and a safety pressure relief hole are formed in the lower part of each wiring press-cap mounting hole, the gasket is arranged in the wiring gland mounting hole, the lower part of the outer side of the wiring gland is hermetically connected with the inner side of the wiring gland mounting hole, the lower end of the wiring gland extrudes the upper part of the gasket, the lower end of the threading end part is connected with the upper end of the pressure-resistant sleeve in a sealing manner, and the lower end of the pressure-resistant sleeve is sealed by the bottom plug.
The upper portion of the outer side face of the high-pressure sealing plug is provided with a first external thread, the upper portion of the inner side of the central hole is provided with a first internal thread, and the first external thread is connected with the first internal thread in a matched mode.
The wiring cap is characterized in that a second external thread is arranged on the lower portion of the outer side face of the wiring cap, a second internal thread is arranged on the inner side of the wiring cap mounting hole, and the second external thread is in fit connection with the second internal thread.
An annular groove is formed in the lower portion of the outer side face of the high-pressure sealing plug, a sealing ring is sleeved in the annular groove, and the sealing ring is in contact with the inner side of the central hole.
The gasket is made of polytetrafluoroethylene.
The number of the third threading holes is 4, and the third threading holes are uniformly distributed along the circumferential direction of the threading end part.
The diameters of the first threading hole, the second threading hole and the third threading hole are 2 mm.
The diameter of the safety pressure relief hole is 3 mm.
The threading end part and the bottom plug are connected in a welding mode.
Ultrahigh pressure CO2Using method of split pipe electric line sealing deviceThe method comprises the following steps:
s01, splicing and welding the fracturing pipe, splicing and welding the threading end with the pressure-resistant casing pipe and the bottom plug to form a unified whole;
s02, threading the bulge gasket, sequentially passing a single-core wire with the diameter of 2mm through a first threading hole of the wiring bulge, a second threading hole of the gasket and a third threading hole of the threading end part, and pressing the gasket into a wiring bulge mounting hole of the threading end part;
s03, fastening and sealing the screw, fastening the wiring cap with a second internal thread on the outer side of the threading end part through a second external thread, extruding the gasket to deform the gasket, and sealing the 2mm single-core electric wire through the deformation of the gasket;
and S04, sealing the high-pressure plug, fastening the high-pressure sealing plug with a first internal thread of the central hole in the threading end through the first external thread, and sealing the high-pressure sealing plug with the inner surface of the central hole in the threading end in a contact manner through a sealing ring.
The invention has the beneficial effects that: the invention provides ultrahigh pressure CO2The cracking pipe electric line sealing device and the use method thereof utilize the drilling screw to combine with the polytetrafluoroethylene gasket and extrude the gasket, so that the gasket is extruded and deformed, and the 2mm single-core electric wire is sealed through the deformation of the gasket, the structure is simple, the cost is low, the method is easy to operate, and the sealing gas pressure can reach 30MPa without leakage.
Drawings
FIG. 1 shows an ultra-high pressure CO of the present invention2A vertical cross-sectional view of the split tubular electrical line sealing apparatus;
fig. 2 is a schematic top view of the threading end of fig. 1.
The reference numbers in the figures are as follows: 1 is a high-pressure sealing plug; 2, pressing the wiring cap; 3 is a threading end part; 4 is a pressure-resistant sleeve; 5 is a bottom plug; 6 is a gasket; 1-1 is a first external thread; 1-2 is an annular groove; 1-3 is a sealing ring; 2-1 is a first threading hole; 2-2 is a second external thread; 3-1 is a second internal thread; 3-2 is a wiring cap mounting hole; 3-3 is a third threading hole; 3-4 is a first internal thread; 3-5 is a central hole; 3-6 are safe pressure relief holes.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
As shown in fig. 1 and 2, an ultra high pressure CO2The device for sealing the electric line of the fracturing pipe comprises a high-pressure sealing plug 1, a wiring gland 2, a gasket 6, a threading end part 3, a pressure-resistant sleeve 4 and a bottom plug 5. The outer side surface of the high-pressure sealing plug 1 is hermetically connected with a central hole 3-5 in the threading end part 3. The upper part of the outer side surface of the high-pressure sealing plug 1 is provided with a first external thread 1-1, the upper part of the inner side of the central hole 3-5 is provided with a first internal thread 3-4, and the first external thread 1-1 is connected with the first internal thread 3-4 in a matching manner. The lower part of the outer side surface of the high-pressure sealing plug 1 is provided with an annular groove 1-2, a sealing ring 1-3 is sleeved in the annular groove 1-2, the sealing ring 1-3 is in contact with the inner side of a central hole 3-5, and the sealing effect between the high-pressure sealing plug 1 and the threading end part 3 is improved by adding the sealing ring 1-3.
The centers of the wiring press cap 2 and the gasket 6 are respectively provided with a first threading hole 2-1 and a second threading hole 6-1, the outer ring of the upper part of the threading end part 3 is provided with a plurality of wiring press cap mounting holes 3-2, and the lower part of the wiring press cap mounting hole 3-2 is provided with a third threading hole 3-3 and a safety pressure relief hole 3-6. Wherein, the number of the third threading holes 3-3 is 4, and the third threading holes are uniformly distributed along the circumferential direction of the threading end part 3. The number of the safety pressure relief holes 3-6 is 1. The diameters of the first threading hole 2-1, the second threading hole 6-1 and the third threading hole 3-3 are 2mm, and the diameter of the safety pressure relief hole 3-6 is 3 mm. The lower part of the outer side surface of the wiring gland 2 is provided with a second external thread 2-2, the inner side of the wiring gland mounting hole 3-2 is provided with a second internal thread 3-1, and the second external thread 2-2 is in fit connection with the second internal thread 3-1.
The gasket 6 is made of polytetrafluoroethylene and is arranged in the wiring press cap mounting hole 3-2, the lower part of the outer side of the wiring press cap 2 is hermetically connected with the inner side of the wiring press cap mounting hole 3-2, the lower end of the wiring press cap 2 extrudes the upper part of the gasket 6, and the lower end of the threading end part 3 is hermetically connected with the upper end of the pressure-resistant sleeve 4 and is connected with the upper end of the pressure-resistant sleeve in a welding mode. The lower end of the pressure casing 4 is sealed by a bottom plug 5.
One of the inventionUltra high pressure CO2The use method of the fracturing pipe electric line sealing device comprises the following steps:
assembling and welding a fracturing pipe, namely assembling and welding a threading end part 3 with a pressure-resistant sleeve 4 and a bottom plug 5 to form a unified whole;
secondly, threading the cap gasket, namely sequentially passing a single-core electric wire with the diameter of 2mm through a first threading hole 2-1 of the wiring cap 2, a second threading hole 6-1 of the gasket 6 and a third threading hole 3-3 of the threading end part 3, and pressing the gasket 6 into a wiring cap mounting hole 3-2 of the threading end part 3;
step three, fastening and sealing the screw, fastening the wiring gland 2 with a second internal thread 3-1 on the outer side of the threading end part 3 through a second external thread 2-2, extruding the gasket 6 to enable the gasket 6 to be extruded and deformed, and sealing the 2mm single-core electric wire through the deformation of the gasket 6;
and step four, sealing the high-pressure plug, namely fastening the high-pressure sealing plug 1 with a first internal thread 3-4 of a central hole 3-5 in the threading end part 3 through a first external thread 1-1, and contacting and sealing the high-pressure sealing plug with the inner surface of the central hole 3-5 in the threading end part 3 through a sealing ring 1-3. By this installation, a pressure test was performed.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. Ultrahigh pressure CO2Fracture pipe electric line sealing device, its characterized in that: including high-pressure seal end cap (1), wiring pressure cap (2), gasket (6), threading tip (3), withstand voltage sleeve pipe (4) and bottom end cap (5), the lateral surface of high-pressure seal end cap (1) with central hole (3-5) sealing connection in threading tip (3), first through wires hole (2-1) and second through wires hole (6-1) have been seted up respectively to the center that wiring was pressed cap (2) and gasket (6), threading tip (3) upper portion outer lane has been seted up a plurality of wirings and has been pressed cap mounting hole (3-2), third through wires hole (3-3) and safe release hole (3-6) have been seted up to wiring pressure cap mounting hole (3-2) lower part, gasket (6) set up and have been pressed cap third through wires hole (3-3) and safe release hole (3-6), the setting ofThe utility model provides a pressure equipment, including wiring, gasket (6), wiring, pressure cap mounting hole (3-2), wiring, press cap (2) outside lower part with wiring is pressed cap mounting hole (3-2) inboard sealing connection, the lower extreme extrusion that the wiring was pressed cap (2) the upper portion of gasket (6), the lower extreme of threading tip (3) with the upper end sealing connection of pressure-resistant sleeve pipe (4), the lower extreme of pressure-resistant sleeve pipe (4) passes through bottom end cap (5) are sealed, the material of gasket (6) is polytetrafluoroethylene.
2. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: the high-pressure sealing plug is characterized in that a first external thread (1-1) is arranged on the upper portion of the outer side face of the high-pressure sealing plug (1), a first internal thread (3-4) is arranged on the upper portion of the inner side of the central hole (3-5), and the first external thread (1-1) is connected with the first internal thread (3-4) in a matched mode.
3. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: the lower part of the outer side face of the wiring gland (2) is provided with a second external thread (2-2), the inner side of the wiring gland mounting hole (3-2) is provided with a second internal thread (3-1), and the second external thread (2-2) is connected with the second internal thread (3-1) in a matching mode.
4. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: an annular groove (1-2) is formed in the lower portion of the outer side face of the high-pressure sealing plug (1), a sealing ring (1-3) is sleeved in the annular groove (1-2), and the sealing ring (1-3) is in contact with the inner side of the central hole (3-5).
5. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: the number of the third threading holes (3-3) is 4, and the third threading holes are uniformly distributed along the circumferential direction of the threading end part (3).
6. The ultra-high pressure CO of claim 12The sealing device for the electric line of the cracking tube is characterized in thatThe method comprises the following steps: the diameters of the first threading hole (2-1), the second threading hole (6-1) and the third threading hole (3-3) are 2 mm.
7. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: the diameter of the safety pressure relief hole (3-6) is 3 mm.
8. The ultra-high pressure CO of claim 12Fracture pipe electric line sealing device, its characterized in that: the threading end part (3) and the bottom plug (4) are connected in a welding mode.
9. Ultrahigh pressure CO2The use method of the fracturing pipe electric line sealing device is characterized in that: the method comprises the following steps:
s01, splicing and welding the fracturing pipe, splicing and welding the threading end part (3) with the pressure-resistant casing pipe (4) and the bottom plug (5) to form a unified whole;
s02, threading the cap pressing gasket, sequentially passing a single-core wire with the diameter of 2mm through a first threading hole (2-1) of the wiring cap (2), a second threading hole (6-1) of the gasket (6) and a third threading hole (3-3) of the threading end part (3), and pressing the gasket (6) into the wiring cap mounting hole (3-2) of the threading end part (3);
s03, fastening and sealing the screw, fastening the wiring gland (2) with a second internal thread (3-1) on the outer side of the threading end part (3) through a second external thread (2-2), and extruding the gasket (6) to enable the gasket (6) to be extruded and deformed, and sealing the 2mm single-core wire through the deformation of the gasket (6);
and S04, sealing the high-pressure plug, fastening the high-pressure sealing plug (1) with a first internal thread (3-4) of a central hole (3-5) in the threading end part (3) through the first external thread (1-1), and contacting and sealing the high-pressure sealing plug with the inner surface of the central hole (3-5) in the threading end part (3) through a sealing ring (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525105.1A CN110289589B (en) | 2019-06-18 | 2019-06-18 | Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525105.1A CN110289589B (en) | 2019-06-18 | 2019-06-18 | Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110289589A CN110289589A (en) | 2019-09-27 |
| CN110289589B true CN110289589B (en) | 2020-07-17 |
Family
ID=68003811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525105.1A Active CN110289589B (en) | 2019-06-18 | 2019-06-18 | Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110289589B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205654343U (en) * | 2016-04-08 | 2016-10-19 | 永州市鑫东森机械装备有限公司 | Disposable carbon dioxide sends and splits ware |
| CN206989830U (en) * | 2017-05-17 | 2018-02-09 | 湖南烈岩科技有限公司 | Disposable carbon dioxide fracturing equipment with pressure relief |
| CN207039155U (en) * | 2017-08-03 | 2018-02-23 | 宁国市盛邦密封件技术有限公司 | A kind of cable protection pipe plugging device |
| CN208401470U (en) * | 2018-05-23 | 2019-01-18 | 北京宏博亚泰电气设备有限公司 | A kind of cable outlet pore structure |
| CN109309369A (en) * | 2017-07-27 | 2019-02-05 | 中国石油天然气股份有限公司 | Plug for sealing instrument probe signal line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1565776A1 (en) * | 2002-11-30 | 2005-08-24 | Tyco Electronics UK Limited | Sealing device |
-
2019
- 2019-06-18 CN CN201910525105.1A patent/CN110289589B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205654343U (en) * | 2016-04-08 | 2016-10-19 | 永州市鑫东森机械装备有限公司 | Disposable carbon dioxide sends and splits ware |
| CN206989830U (en) * | 2017-05-17 | 2018-02-09 | 湖南烈岩科技有限公司 | Disposable carbon dioxide fracturing equipment with pressure relief |
| CN109309369A (en) * | 2017-07-27 | 2019-02-05 | 中国石油天然气股份有限公司 | Plug for sealing instrument probe signal line |
| CN207039155U (en) * | 2017-08-03 | 2018-02-23 | 宁国市盛邦密封件技术有限公司 | A kind of cable protection pipe plugging device |
| CN208401470U (en) * | 2018-05-23 | 2019-01-18 | 北京宏博亚泰电气设备有限公司 | A kind of cable outlet pore structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110289589A (en) | 2019-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207017968U (en) | Oil well head annular space sealing device | |
| CN107143298A (en) | Oil well head annular space sealing device | |
| CN101673899B (en) | High pressure resistance sealed connector and adaptor thereof | |
| US10689917B2 (en) | Simplified packer penetrator and method of installation | |
| CN110289589B (en) | Ultrahigh pressure CO2Fracturing pipe electric line sealing device and using method thereof | |
| CN212509888U (en) | Taper sleeve locking type pipe fitting | |
| CN201246554Y (en) | Corrugated tube joint | |
| CN104074474A (en) | Sleeve applicable to diameter expansion deformation and processing method | |
| CN201250613Y (en) | High pressure rapid connector | |
| CN104806826A (en) | Clamp ring two-side-locked thin-walled metal pipe intertubular connecting component | |
| CN212508129U (en) | Air-tight screw-connected pipe joint | |
| CN205231353U (en) | Waterproof tensile fastening of cable and fastening structure | |
| CN212054591U (en) | Underground flexible continuous composite pipe connecting joint with cable preset on inner wall | |
| CN210053184U (en) | Explosion-proof cable lead-in device | |
| CN204171961U (en) | A kind of disassembling fixture of downhole instrument sealing obturating plug | |
| CN205743806U (en) | A kind of dual-purpose blowout preventer | |
| CN221074183U (en) | Double-seal coiled tubing hanger | |
| CN201466660U (en) | Split type cable connection structure for oil gas exploitation intellect drill string adapter | |
| CN112886498A (en) | Cable pipe orifice plugging device | |
| CN207795076U (en) | A kind of coiled tubing plug-in connector | |
| CN212210472U (en) | High-voltage-resistant cable crossing device and oil well | |
| CN201460760U (en) | High-temperature high-pressure sealing adapter for oil gas exploitation drill stem | |
| CN216520162U (en) | Electrical sealing joint applied to LNG low-temperature storage tank pump | |
| CN205422668U (en) | Water injection string pressure telescopic compensator | |
| CN111101885A (en) | Underground flexible continuous composite pipe connecting joint with cable preset on inner wall and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |