CN111829399A - Gas expansion blasting flexible fracturing pipe and using method thereof - Google Patents
Gas expansion blasting flexible fracturing pipe and using method thereof Download PDFInfo
- Publication number
- CN111829399A CN111829399A CN202010820439.4A CN202010820439A CN111829399A CN 111829399 A CN111829399 A CN 111829399A CN 202010820439 A CN202010820439 A CN 202010820439A CN 111829399 A CN111829399 A CN 111829399A
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- CN
- China
- Prior art keywords
- flexible
- pipe
- hole
- tube
- filling head
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- 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.)
- Pending
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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
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
- F42B3/045—Hybrid systems with previously pressurised gas using blasting to increase the pressure, e.g. causing the gas to be released from its sealed container
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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
- F42B3/087—Flexible or deformable blasting cartridges, e.g. bags or hoses for slurries
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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
- F42B3/10—Initiators therefor
-
- 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
- F42B3/24—Cartridge closures or seals
-
- 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
- F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
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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 discloses a flexible fracturing pipe for gas expansion blasting and a using method thereof. The flexible fracturing pipe has good flexibility, can be folded and bent in the transportation process, and is convenient to transport; the flexible fracturing pipe is light in weight, convenient to operate on site and capable of improving working efficiency.
Description
Technical Field
The invention relates to the field of fracturing pipes, in particular to a flexible fracturing pipe for gas expansion blasting and a using method of the flexible fracturing pipe for gas expansion blasting.
Background
The carbon dioxide expansion blasting technology is a rock breaking method mainly based on physical explosion, an expansion blasting device of the carbon dioxide expansion blasting technology mainly comprises an internal exciting pipe, an external fracturing pipe and supercritical carbon dioxide (higher than 7.38MPa) filled in the internal exciting pipe and the external fracturing pipe, and the technical principle is as follows: the exciting tube is installed in the main tube body, when the exciting current is conducted, the electric ignition head ignites, the heating powder is ignited and rapidly burns to release a large amount of heat, the temperature and the pressure in the cracking tube body are rapidly raised, and the dense-phase liquid CO is enabled to be in a liquid state2Quickly converting into gaseous supercritical state, and when the pressure in main pipe body breaks through the blocking action of energy-releasing end head rupture disk, supercritical state CO2The liquid-gas phase change is generated instantly, and high-pressure gas is formed and discharged from the energy discharge end to do work to the outside, thereby achieving the purpose of breaking rock mass.
The existing gas cracking tube uses a steel tube shell to ensure safety, so that the transportation and operation of the cracking tube are inconvenient.
Disclosure of Invention
The invention mainly aims to provide a flexible fracturing pipe for gas expansion blasting and a using method of the flexible fracturing pipe for gas expansion blasting, and aims to solve the problems of inconvenience in transportation and operation of the conventional gas fracturing pipe.
In order to achieve the purpose, the invention provides a gas expansion blasting flexible fracturing pipe, which comprises a flexible fracturing pipe;
the flexible fracturing pipe comprises a flexible pipe body, and blasting media are filled in the flexible pipe body.
Preferably, one end of the flexible pipe body is connected with a filling head, and one end of the flexible pipe body, which is far away from the filling head, is connected with a sealing head.
Preferably, the filling head is provided with an inflation through hole communicated with the inner space and the outer space of the flexible pipe body, and an inflation valve communicated with the inner space and the outer space of the flexible pipe body is arranged in the inflation through hole.
And a first sealing ring is arranged at the air inlet of the inflation valve, and a second sealing ring is arranged at the air outlet of the inflation valve.
Preferably, the filling head is connected with an excitation tube, and one end of the excitation tube, which is far away from the filling head, is arranged in the inner chamber of the flexible tube body.
Preferably, be equipped with toper screw thread through-hole on the filling head, toper screw thread through-hole includes minor diameter end, major diameter end, minor diameter end is equipped with arouse the pipe, arouse the pipe and keep away from the one end of filling the head is located the interior cavity of flexible fracturing pipe, be connected with the toper sealing plug through screw-thread fit in the major diameter end.
Preferably, the minimum diameter of the tapered threaded through hole is larger than the diameter of the tube body of the excitation tube, and the minimum diameter of the tapered threaded through hole is smaller than the diameter of the tube head of the excitation tube.
Preferably, the sealing head is provided with an exhaust thread through hole communicated with the inner space and the outer space of the flexible pipe body, a safety valve communicated with the inner space and the outer space of the flexible pipe body is arranged in the exhaust thread through hole, and one end of the exhaust thread through hole, far away from the flexible pipe body, is connected with a hollow screw in a threaded fit mode.
Preferably, the flexible pipe body is a polymer pipe.
In order to achieve the purpose, the invention also provides a using method of the flexible cracking tube by gas expansion blasting, wherein one end of the flexible tube body is connected with a filling head, one end of the flexible tube body, which is far away from the filling head, is connected with a sealing head, the filling head is provided with an inflation through hole for communicating the inner space and the outer space of the flexible tube body, an inflation valve for communicating the inner space and the outer space of the flexible tube body is arranged in the inflation through hole, and the filling head is connected with an excitation tube;
the use method of the gas expansion blasting flexible fracturing pipe comprises the following steps:
connecting the filling head to one end of the flexible pipe body;
connecting the sealing head to an end of the flexible pipe body remote from the filling head;
installing an inflation valve in the inflation through hole to communicate the inner space and the outer space;
loading the excitation tube from the filling head into the flexible tube body;
inflating through the inflation valve;
and connecting the excitation pipes and placing the gas expansion blasting flexible fracturing pipe into the blast hole for blasting.
In the technical scheme of the invention, the flexible fracturing pipe has good flexibility, can be folded and bent in the transportation process and is convenient to transport; the flexible fracturing pipe is light in weight, convenient to operate on site and capable of improving working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
5 | |
| 101 | Flexible pipe body | 6 | |
| 2 | Filling |
7 | |
| 201 | Inflatable through hole | 8 | |
| 202 | Tapered threaded through |
801 | |
| 2021 | |
802 | |
| 2022 | End of |
9 | Conical sealing plug |
| 3 | |
10 | |
| 301 | Exhaust threaded through |
11 | |
| 4 | Clamp hoop |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a gas expansion blasting flexible fracturing pipe.
Referring to fig. 1, the gas expansion blasting flexible fracturing pipe comprises a flexible fracturing pipe 1, wherein the flexible fracturing pipe 1 comprises a flexible pipe body 101, and the flexible pipe body 101 is filled with blasting media.
The flexible fracturing pipe 1 has good flexibility, can be folded and bent in the transportation process, and is convenient to transport; the flexible fracturing pipe 1 is light in weight, convenient to operate on site and capable of improving working efficiency.
Specifically, the one end of flexible pipe body 101 is connected with fills dress head 2, flexible pipe body 101 is kept away from fill dress head 2's one end is connected with sealed head 3, fill and be equipped with the switch-on the head 2 the inflation through-hole 201 of the interior outer space of flexible pipe body 101, be equipped with the switch-on in the inflation through-hole 201 the inflation valve 5 of the interior outer space of flexible pipe body 101, be connected with on the first 2 of filling and arouse the pipe 8, arouse the pipe 8 and keep away from fill dress head 2's one end is located the inside cavity of flexible pipe body 101.
Preferably, at least one of the filling head 2 and the sealing head 3 is fixedly connected to the flexible pipe body 101 by means of a collar 4.
The filling head 2 or the sealing head 3 can be tightly connected to the flexible pipe body 101 by means of the collar 4.
Preferably, the flexible pipe body 101 is a polymer pipe.
In the technical scheme of the invention, the flexible pipe body 101 is made of a high polymer material, so that metal residues are less after the flexible cracking pipe 1 is exploded, and the adverse effect of waste metal residues on the environment is reduced; compared with the traditional gas cracking pipe with the same volume, the hole wall of the flexible pipe body 101 made of the high polymer material is thinner, so that more liquid carbon dioxide can be filled in the pipe body, and the blasting effect is enhanced; the flexible cracking tube 1 has low production cost, and the cost of the tube body with the same model and specification is about one fourth of that of the traditional gas cracking tube; the flexible cracking pipe 1 has high strength, can bear pressure over 20Mpa and is far higher than pressure of 8-12Mpa of liquid carbon dioxide, and prevents the liquid carbon dioxide from leaking due to the breakage of the pipe body.
Preferably, a tapered threaded through hole 202 is formed in the filling head 2, the tapered threaded through hole 202 comprises a small-diameter end 2021 and a large-diameter end 2022, the small-diameter end 2021 is provided with the excitation tube 8, one end of the excitation tube 8, which is far away from the filling head 2, is arranged in the inner cavity of the flexible tube body 101, a tapered sealing plug 9 is connected in the large-diameter end 2022 in a threaded fit manner, the minimum diameter of the tapered threaded through hole 202 is greater than the diameter of the tube body 801 of the excitation tube 8, and the minimum diameter of the tapered threaded through hole 202 is smaller than the diameter of the tube head 802 of the excitation tube 8.
After the exciting tube 8 is placed in the flexible tube body 101, the conical sealing plug 9 is used for blocking the conical threaded through hole 202, fixing the exciting tube 8 and preventing the exciting tube 8 from being ejected out when the pressure in the tube body rises; the small diameter end 2021 of the tapered threaded through bore 202 is used to capture the tip 802 of the excitation tube 8.
Preferably, the inflation valve 5 is a one-way valve.
Preferably, a first sealing ring 6 is arranged at the air inlet of the inflation valve 5, and a second sealing ring 7 is arranged at the air outlet of the inflation valve 5.
The inflation valve 5 adopts a one-way valve to prevent the filled gas from reversely leaking, so that the inflation efficiency is improved; when the pressure in the pipe is increased, the sealing ring is pressed upwards, so that the sealing performance is enhanced.
In another embodiment, the sealing head 3 is provided with an exhaust threaded through hole 301 communicating with the inner space and the outer space of the flexible pipe body 101, a safety valve 10 communicating with the inner space and the outer space of the flexible pipe body 101 is arranged in the exhaust threaded through hole 301, and one end of the exhaust threaded through hole 301, which is far away from the pipe body of the flexible pipe body 101, is connected with a hollow screw 11 through thread fit.
Specifically, the inner diameter of the vent threaded through hole 301 is larger than the inner hole diameter of the hollow screw 11.
Preferably, the inner diameter of the exhaust threaded through hole 301 is 2 mm.
Preferably, the screw inner hole of the hollow screw 11 is 1 mm.
The safety pressure of the safety valve 10 is preset to be 15-30 Mpa, when partial liquid carbon dioxide in the flexible pipe body 101 is subjected to phase change due to other external reasons, the pressure in the pipe rises, when the pressure is larger than the preset safety value of the safety valve 10, the safety valve 10 is conducted, the gas in the pipe is discharged from a screw inner hole of the hollow screw 11 to reduce the pressure in the pipe, and the safety of the gas in the process of expanding, blasting and flexibly cracking the pipe is ensured; and after the pressure in the pipe is reduced to be lower than the preset safety value of the safety valve 10, the passage of the safety valve 10 is closed, and sealing is realized again.
In another embodiment, the flexible fracturing tubes 1 form a connecting tube through other related devices, liquid carbon dioxide can be injected into the flexible tube body 101, the assembled connecting tube is placed in a blast hole according to specific requirements, a gap between the connecting tube and the blast hole is filled, the excitation tubes 8 in the flexible fracturing tubes 1 are connected in series through a lead, and are connected with a power supply and an external controller through the lead, and the excitation tubes 8 are triggered by the external controller to complete blasting.
The invention also provides a using method of the gas expansion blasting flexible fracturing pipe, wherein one end of the flexible pipe body 101 is connected with a filling head 2, one end of the flexible pipe body 101, which is far away from the filling head 2, is connected with a sealing head 3, the filling head 2 is provided with an inflation through hole 201 for communicating the inner space and the outer space of the flexible pipe body 101, an inflation valve 5 for communicating the inner space and the outer space of the flexible pipe body 101 is arranged in the inflation through hole 201, and the filling head 2 is connected with an excitation pipe 8;
the use method of the gas expansion blasting flexible fracturing pipe comprises the following steps:
step S1 of connecting the filling head 2 to one end of the flexible pipe body 101;
step S2, connecting the sealing head 3 to one end of the flexible pipe body 101 away from the filling head 2;
step S3, installing the inflation valve 5 in the inflation through hole 201 to communicate the internal and external spaces;
step S4, loading the excitation tube 8 from the filling head 2 into the flexible tube body 101;
step S5, inflating through the inflation valve 5;
and step S6, connecting the exciting pipe 8 and placing the gas expansion blasting flexible fracturing pipe into the blast hole for blasting.
After the flexible pipe body 101 is packaged, liquid carbon dioxide is filled into the flexible pipe body 101 through the inflation through hole 201 and the inflation valve 5, then the gas expansion blasting flexible fracturing pipe is placed in a blast hole, the excitation pipe 8 is connected and controls excitation of the excitation pipe, the liquid carbon dioxide in the flexible pipe body 101 is subjected to phase change, the pressure in the pipe is rapidly increased, when the pressure in the pipe is larger than the bearable pressure of the flexible pipe body 101, the flexible pipe body 101 is burst, and gas overflows to do work outwards, so that the purpose of crushing a rock mass is achieved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The flexible fracturing pipe for gas expansion blasting is characterized by comprising a flexible fracturing pipe (1);
the flexible fracturing pipe (1) comprises a flexible pipe body (101), and blasting media are filled in the flexible pipe body (101).
2. The gas expansion blasting flexible fracturing pipe as claimed in claim 1, wherein one end of the flexible pipe body (101) is connected with a filling head (2), and one end of the flexible pipe body (101) far away from the filling head (2) is connected with a sealing head (3).
3. The gas expansion blasting flexible fracturing pipe as claimed in claim 2, wherein the filling head (2) is provided with an inflation through hole (201) communicating the inner space and the outer space of the flexible pipe body (101), and an inflation valve (5) communicating the inner space and the outer space of the flexible pipe body (101) is arranged in the inflation through hole (201).
4. The gas expansion blasting flexible fracturing pipe as claimed in claim 3, wherein the gas inlet of the inflation valve (5) is provided with a first sealing ring (6), and the gas outlet of the inflation valve (5) is provided with a second sealing ring (7).
5. The gas expansion blasting flexible fracturing pipe as claimed in claim 2, wherein the filling head (2) is connected with an excitation pipe (8), and one end of the excitation pipe (8) far away from the filling head (2) is arranged in the inner cavity of the flexible pipe body (101).
6. The gas expansion blasting flexible fracturing pipe as recited in claim 5, wherein the filling head (2) is provided with a conical threaded through hole (202), the conical threaded through hole (202) comprises a small diameter end (2021) and a large diameter end (2022), the small diameter end (2021) is provided with the exciting pipe (8), one end of the exciting pipe (8) far away from the filling head (2) is arranged in the inner cavity of the flexible fracturing pipe (1), and the large diameter end (2022) is internally connected with a conical sealing plug (9) through thread fit.
7. The gas expanded blast flexibilized fracturing tube of claim 6, wherein said tapered threaded through hole (202) has a minimum diameter greater than the diameter of the body (801) of said activation tube (8), and wherein said tapered threaded through hole (202) has a minimum diameter less than the diameter of the head (802) of said activation tube (8).
8. The gas expansion blasting flexible fracturing pipe as claimed in claim 2, wherein the sealing head (3) is provided with a gas discharge threaded through hole (301) communicating the inner space and the outer space of the flexible pipe body (101), a safety valve (10) communicating the inner space and the outer space of the flexible pipe body (101) is arranged in the gas discharge threaded through hole (301), and one end of the gas discharge threaded through hole (301) far away from the flexible pipe body (101) is connected with a hollow screw (11) through thread fit.
9. The gas expanded explosive flexible fracturing tube of any one of claims 1 to 8, wherein the flexible tube body (101) is a polymeric tubing.
10. The use method of the flexible cracking tube for gas expansion blasting is characterized by being applied to the flexible cracking tube for gas expansion blasting according to any one of claims 1 to 9, wherein one end of the flexible tube body (101) is connected with a filling head (2), one end of the flexible tube body (101), which is far away from the filling head (2), is connected with a sealing head (3), an inflation through hole (201) which is communicated with the inner space and the outer space of the flexible tube body (101) is formed in the filling head (2), an inflation valve (5) which is communicated with the inner space and the outer space of the flexible tube body (101) is arranged in the inflation through hole (201), and an excitation tube (8) is connected to the filling head (2);
the use method of the gas expansion blasting flexible fracturing pipe comprises the following steps:
-connecting the filling head (2) to one end of the flexible pipe body (101);
-connecting the sealing head (3) to an end of the flexible pipe body (101) remote from the filling head (2);
installing an inflation valve (5) in the inflation through hole (201) to communicate the inner space and the outer space;
-loading the excitation tube (8) from the filling head (2) into the flexible pipe body (101);
the inflation is carried out through the inflation valve (5);
and connecting the exciting pipe (8) and putting the gas expansion blasting flexible fracturing pipe into the blast hole for blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820439.4A CN111829399A (en) | 2020-08-14 | 2020-08-14 | Gas expansion blasting flexible fracturing pipe and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820439.4A CN111829399A (en) | 2020-08-14 | 2020-08-14 | Gas expansion blasting flexible fracturing pipe and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111829399A true CN111829399A (en) | 2020-10-27 |
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ID=72919093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010820439.4A Pending CN111829399A (en) | 2020-08-14 | 2020-08-14 | Gas expansion blasting flexible fracturing pipe and using method thereof |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091545A (en) * | 2021-04-09 | 2021-07-09 | 中南大学 | Gas-thermal expansion pipe rock breaking device and rock breaking method thereof |
| WO2023108525A1 (en) * | 2021-12-16 | 2023-06-22 | 方莹 | In-hole filling flexible fracturing apparatus and method for using same |
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| CN111183329A (en) * | 2017-10-03 | 2020-05-19 | 法布里泽股份公司 | Folding blasting container with partially compressible and antistatic accessories |
| CN212409502U (en) * | 2020-08-14 | 2021-01-26 | 葛洲坝易普力(湖南)科技有限公司 | Flexible fracturing pipe for gas expansion blasting |
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| JPH07167598A (en) * | 1993-12-11 | 1995-07-04 | Okumura Corp | Blasting method |
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| US20160282091A1 (en) * | 2013-11-05 | 2016-09-29 | Fowlds 3 Limited | Cartridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091545A (en) * | 2021-04-09 | 2021-07-09 | 中南大学 | Gas-thermal expansion pipe rock breaking device and rock breaking method thereof |
| WO2023108525A1 (en) * | 2021-12-16 | 2023-06-22 | 方莹 | In-hole filling flexible fracturing apparatus and method for using same |
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