CN113390298B - CO (carbon monoxide) 2 Series circuit connecting device of fracturing device - Google Patents
CO (carbon monoxide) 2 Series circuit connecting device of fracturing device Download PDFInfo
- Publication number
- CN113390298B CN113390298B CN202110649168.5A CN202110649168A CN113390298B CN 113390298 B CN113390298 B CN 113390298B CN 202110649168 A CN202110649168 A CN 202110649168A CN 113390298 B CN113390298 B CN 113390298B
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- Prior art keywords
- head
- insulating sleeve
- fracturing
- threaded pin
- connector
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/02—Blasting cartridges, i.e. case and explosive adapted to be united into assemblies
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention relates to the field of CO2 fracturing devices, in particular to a series circuit connecting device of a CO2 fracturing device, which comprises a plurality of CO2 fracturing device bodies, a lead, an exploder and a connecting device, wherein the connecting device consists of a connector, a threaded pin, a first insulating sleeve, a second insulating sleeve and a third insulating sleeve; the left end part of the threaded pin is wrapped by the insulating sleeve and integrally arranged at the right end of the connector, the right end part of the threaded pin is connected with a CO2 fracturing device release head, and a second insulating sleeve is arranged between the release head and the connector; the left end of the connector is connected with an inflation head of the other CO2 fracturing device body, and an insulation sleeve III is arranged between the inflation head and the threaded pin in the connector; the invention can realize the flexible connection among a plurality of CO2 fracturing devices and improve the use efficiency of the CO2 fracturing devices in actual drilling.
Description
Technical Field
The invention relates to the field of CO2 fracturing devices, in particular to a series circuit connecting device of a CO2 fracturing device.
Background
The carbon dioxide gas phase fracturing is a novel coal mine gas treatment technology, energy is released through carbon dioxide phase change to fracture coal bodies, the coal gas phase fracturing technology has the advantages of safety, high efficiency, no pollution and the like, and when a required fractured coal bed is far away from a mining surface, a plurality of carbon dioxide fracturing devices are required to be connected in series for enabling the carbon dioxide fracturing effect to reach a farther range.
The key of the multi-group carbon dioxide fracturing series connection is the series connection of circuits, the existing series circuit has multiple methods, usually, a rupture disk is wrapped in an insulating mode, so that a carbon dioxide fracturing pipe body is uncharged, binding posts are welded on two sides of the rupture disk, or a through hole is formed in the rupture disk to facilitate an electric wire to pass through, but the methods all often face a sealing problem, if the sealing problem is solved improperly, the expected fracturing pressure cannot be achieved, and the fracturing effect can be greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a series circuit connecting device of a CO2 fracturing device, which is scientific in principle, convenient to operate, safe and efficient.
A series circuit connecting device of a CO2 fracturing device comprises a plurality of CO2 fracturing device bodies, a connecting device used for connecting the plurality of CO2 fracturing device bodies, a conducting wire and an exploder used for exploding the CO2 fracturing device bodies, wherein the CO2 fracturing device body comprises an inflation head, a liquid storage pipe, a heater, a release head and a shear slice; the T-shaped insulating sleeve wraps the left end part of the threaded pin and is integrally arranged at the right end of the connector, the right end part of the threaded pin is connected with a release head of the CO2 fracturing device body, and the insulating sleeve II is arranged between the release head and the connector; the left end of the connector is connected with an inflation head of the other CO2 fracturing device body, and the third insulating sleeve is arranged between the inflation head and the threaded pin in the connector; the lead is arranged between the inflation head and the threaded pin, and between the release head and the exploder of the first CO2 fracturing device body, and the CO2 fracturing device body comprises the inflation head, a liquid storage pipe, a heater, a release head and a shear slice.
Further, the wire for connecting the inflation head and the threaded pin is a two-terminal wire.
Further, a lead for connecting the first CO2 fracturing device releasing head and the exploder is a multi-core cable.
Further, the insulating sleeve is made of one of rubber, silica gel and polyurethane.
Furthermore, the second insulating sleeve and the third insulating sleeve are annular integrally, the wall thickness is 20-50 mm, and the length is 40-80 mm.
Furthermore, the number of the serial branches of the CO2 fracturing pipe body is 35-50.
The working principle of the series circuit of the invention is as follows:
the circuit is led out from the positive pole of the exploder, and is led to the heater from the inflation head, the internal circuit of the heater is connected with the pipe wall of the liquid storage pipe and then is transmitted to the release head, the release head conducts electricity to the connecting pin and then is transmitted to the inflation head of the other CO2 cracking device through the double-terminal lead until the release head of the last CO2 cracking device, and the multi-core cable is connected with the release head and the negative pole of the exploder, so that the series connection of the circuits is completed.
The invention has the beneficial effects that:
(1) The insulation sleeve can realize the insulation effect, can also reduce the damage to the pipe body when the CO2 cracking device works, and has the buffer effect;
(2) The existence of the second insulating sleeve can realize the flexible connection among a plurality of CO2 fracturing devices, and can adapt to the advance in actual bending drilling, so that the application in deep drilling can be realized.
(3) The invention adopts the tube body for conduction, and does not make articles on the blasting sheet, thereby ensuring the stability of the series connection of a plurality of CO2 cracking device bodies.
Drawings
FIG. 1 is a sectional view of example 1 of the present invention;
FIG. 2 is a cross-sectional view of the connector of the present invention;
wherein: 1-a binding post; 2-a release head; 3-a multi-core cable; 4-a liquid storage pipe; 5-inflating head; 6-a connector; 7-insulating sleeve III; 8-a two-terminal wire; 9-sleeving a first insulating sleeve; 10-a threaded pin; 11-insulating sleeve II; 12-exploder.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-2, the connecting device in this embodiment 1 is composed of a cylindrical connector (6), a threaded pin (10), a T-shaped first insulating sleeve (9), a second insulating sleeve (11), and a third insulating sleeve (7); the left end part of the threaded pin (10) is wrapped by the T-shaped insulating sleeve I (9), the insulating sleeve I9 is selected to be T-shaped according to the size of the left end part of the threaded pin (10), the left end part of the threaded pin (10) is completely wrapped by the T-shaped insulating sleeve I (9) and insulated from the connector (6), then the threaded pin is integrally arranged at the right end of the connector (6), the right end part of the exposed threaded pin (10) is connected with the release head (2) of the CO2 fracturing device body, and an insulating sleeve II (11) is arranged between the release head (2) and the connector (6), so that the connector (6) and the release head (2) can be insulated; the left end of the connector (6) is connected with an inflation head (5) of another CO2 fracturing device body, so that the two CO2 fracturing device bodies can be connected, a third insulating sleeve (7) is arranged between the inflation head (5) and a threaded pin (10) in the connector (6), the thickness of all the insulating sleeves is 30mm, the length of the third insulating sleeve (7) and the second insulating sleeve (11) is 50mm, the inner diameter of the third insulating sleeve is the same as the outer diameter of the threaded pin, all the insulating sleeves are made of rubber materials, insulation can be realized, flexible connection between the CO2 fracturing device bodies can be realized, the flexible connection can adapt to a bent drilling situation, a double-terminal lead (8) is arranged in the third insulating sleeve (7) and used for connecting a circuit between the threaded pin (10) and the inflation head (5), meanwhile, the circuit is connected, a binding post (1) is arranged at the left end of the threaded pin (10), 50 CO2 fracturing device bodies are sequentially connected in series according to the method, finally, the same CO2 fracturing device is released, and the multi-core cable (3) and the multi-core cracking device is connected in series.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. CO (carbon monoxide) 2 The series circuit connection device of the fracturing unit comprises multiple CO 2 Fracturing device body for multiple CO 2 Connecting device for connecting between fracturing device bodies, lead and detonating CO 2 Exploder of the body of the fracturing device, CO 2 The fracturing device body comprisesFill gas head, liquid storage pipe, heater, release head and cut the piece, fill gas head and liquid storage pipe and link to each other, the heater left end portion leans on with filling gas head inside, and the heater right part is established inside the liquid storage pipe, and the liquid storage pipe other end is equipped with cuts the piece to be connected its characterized in that with the release head: the connecting device consists of a cylindrical connector, a threaded pin, a T-shaped insulating sleeve I, an insulating sleeve II and an insulating sleeve III; the T-shaped insulating sleeve wraps the left end part of the threaded pin and is integrally arranged at the right end of the connector, and the right end part of the threaded pin and the CO are integrally arranged 2 The release head of the fracturing device body is connected, and the second insulating sleeve is arranged between the release head and the connector; the left end of the connector and another CO 2 The inflation head of the fracturing device body is connected, and the third insulating sleeve is arranged between the inflation head and the threaded pin in the connector; the lead is arranged on the inflation head, the threaded pin and the head support CO 2 Between the release head of the body of the fracturing device and the blasting machine,
the first T-shaped insulating sleeve, the second insulating sleeve and the third insulating sleeve are made of one of rubber, silica gel and polyurethane,
the circuit is led out from the positive pole of the exploder and is led to the heater from the inflating head, the internal circuit of the heater is connected with the pipe wall of the liquid storage pipe and then is led to the releasing head, the releasing head conducts electricity to the threaded pin and then is led to the other CO branch through the two-terminal lead 2 Gas-filled head of cracking device until the last CO 2 And a release head of the fracturing device, wherein the multi-core cable is connected with the release head and the negative electrode of the exploder, and the circuit is connected in series.
2. CO according to claim 1 2 Send series circuit connecting device of split ware, its characterized in that: the wire used for connecting the inflation head and the threaded pin is a two-terminal wire.
3. CO according to claim 1 2 Send series circuit connecting device who splits ware, its characterized in that: for connecting first CO 2 The conductor of the crack initiator release head and the exploder is a multi-core cable.
4. CO according to claim 1 2 Send series circuit connecting device of split ware, its characterized in that: the second insulating sleeve and the third insulating sleeve are annular integrally, the wall thickness is 20-50 mm, and the length is 40-80 mm.
5. CO according to claim 1 2 Send series circuit connecting device of split ware, its characterized in that: said CO 2 The number of the series branches of the fracturing device body is 35-50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649168.5A CN113390298B (en) | 2021-06-10 | 2021-06-10 | CO (carbon monoxide) 2 Series circuit connecting device of fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649168.5A CN113390298B (en) | 2021-06-10 | 2021-06-10 | CO (carbon monoxide) 2 Series circuit connecting device of fracturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113390298A CN113390298A (en) | 2021-09-14 |
| CN113390298B true CN113390298B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110649168.5A Active CN113390298B (en) | 2021-06-10 | 2021-06-10 | CO (carbon monoxide) 2 Series circuit connecting device of fracturing device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205189849U (en) * | 2015-09-02 | 2016-04-27 | 煤科集团沈阳研究院有限公司 | Carbon dioxide phase transition coal seam is sent and is split ware |
| CN206158745U (en) * | 2016-10-13 | 2017-05-10 | 山东名世矿业机械有限公司 | Carbon dioxide sends and splits ware |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69905164T2 (en) * | 1998-07-01 | 2003-10-02 | Shell Int Research | METHOD AND TOOL FOR COLUMNING IN AN UNDERGROUND FORMATION |
| SE536821C2 (en) * | 2011-12-23 | 2014-09-23 | Power Tools Spräckutrustning I Herrljunga Ab | A stone cracking unit, an apertured stone crack cartridge and an unapproved stone crack cartridge, and an ignition capsule included in the assembly |
| US9290419B2 (en) * | 2012-11-29 | 2016-03-22 | Autoliv Asp, Inc. | Duplex actuation system for inflatable restraints |
| CN105680261B (en) * | 2016-01-07 | 2018-01-23 | 北京中煤矿山工程有限公司 | A kind of carbon dioxide fracturing device connector |
| CN205503126U (en) * | 2016-02-23 | 2016-08-24 | 北京巧力科技有限责任公司 | Send and split ware with piece is cuted to bipolar electrode level pressure |
| US10816311B2 (en) * | 2018-11-07 | 2020-10-27 | DynaEnergetics Europe GmbH | Electronic time delay fuse |
| CN111486753A (en) * | 2019-01-26 | 2020-08-04 | 方莹 | Tandem type fracturing device |
| CN111595205A (en) * | 2020-06-24 | 2020-08-28 | 河北云山化工集团有限公司 | Carbon dioxide cracking device and series connection method |
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2021
- 2021-06-10 CN CN202110649168.5A patent/CN113390298B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205189849U (en) * | 2015-09-02 | 2016-04-27 | 煤科集团沈阳研究院有限公司 | Carbon dioxide phase transition coal seam is sent and is split ware |
| CN206158745U (en) * | 2016-10-13 | 2017-05-10 | 山东名世矿业机械有限公司 | Carbon dioxide sends and splits ware |
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| CN113390298A (en) | 2021-09-14 |
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