CN213510566U - Coal mine gas extraction deep hole presplitting blasting permeability-increasing structure - Google Patents
Coal mine gas extraction deep hole presplitting blasting permeability-increasing structure Download PDFInfo
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- CN213510566U CN213510566U CN202022717619.8U CN202022717619U CN213510566U CN 213510566 U CN213510566 U CN 213510566U CN 202022717619 U CN202022717619 U CN 202022717619U CN 213510566 U CN213510566 U CN 213510566U
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- pipe
- main pipe
- inflation valve
- coal mine
- deep hole
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Abstract
The utility model discloses a coal mine gas extraction deep hole presplitting blasting permeability-increasing structure, which comprises an inflation valve and a main pipe, wherein the main pipe is arranged below the inflation valve, a detonation component is communicated between the inflation valve and the main pipe, and a constant pressure energy release pipe is arranged below the main pipe; the joint of the main pipe and the constant pressure energy release pipe is provided with a sealing ring, the bottom end of the constant pressure energy release pipe is provided with a stop component, and the top end of the inflation valve is provided with an inflation connector. Has the advantages that: the utility model discloses a set up liquid carbon dioxide as the blasting medium, utilize liquid carbon dioxide heating rapid gasification principle to realize the blasting action of level pressure let-down pipe to produce the high-pressure wave, crack in order to explode the coal seam, improve the coal seam permeability, the security is higher simultaneously, vibrations and striking all can't detonate, it is higher to deposit the transportation security, inflation valve and detonating subassembly repeatedly usable practice thrift the cost, and the practicality is strong.
Description
Technical Field
The utility model relates to a coal mining field, concretely relates to coal mine gas takes out and adopts deep hole presplitting blasting anti-reflection structure.
Background
The coal mine gas extraction not only reduces the gas emission quantity of the coal mine and prevents gas explosion, but also is an important measure, and the extracted gas is an important resource and can be used as an associated resource of coal for development and utilization.
The applicant finds that at least the following technical problems exist in the prior art: the deep hole presplitting blasting anti-reflection structure that uses at present mainly buries the explosive to the drilling position and explodes, can cause the pollution to gas after anti-reflection blasting construction is accomplished, and explosive transportation and storage process are dangerous higher simultaneously, and the regional use of filling with gas has higher potential safety hazard in the colliery in the pit, and equipment structure is disposable, and is with high costs, and the practicality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a colliery gas takes out and adopts deep hole presplitting blasting anti-reflection structure in order to solve above-mentioned problem, set up liquid carbon dioxide as the blasting medium, utilize the liquid carbon dioxide heating rapid gasification principle to realize the blasting action of level pressure let-off pipe, thereby produce the high-pressure wave, in order to explode the cracking to the coal seam, improve the coal seam permeability, the security is higher simultaneously, vibrations and striking all can't detonate, it is higher to deposit the transportation security, inflation valve and detonating subassembly repeatedly usable, the cost is saved, therefore, the clothes hanger is strong in practicability, describe in detail below.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a coal mine gas drainage deep hole presplitting blasting permeability-increasing structure, including inflation valve and main pipe, the main pipe is arranged below the inflation valve, and the inflation valve is communicated with the main pipe between have the detonation subassembly, the main pipe below is provided with the level pressure let-off pipe;
the joint of the main pipe and the constant pressure energy release pipe is provided with a sealing ring, the bottom end of the constant pressure energy release pipe is provided with a stop component, the top end of the inflation valve is provided with an inflation connector, and the top end of the inflation connector is provided with an air duct communicated with the inflation valve.
By adopting the coal mine gas extraction deep hole pre-splitting blasting permeability-increasing structure, when blasting permeability increase is required to be carried out on a set coal seam depth in the use process, the whole device is arranged in a corresponding hole channel to move to the set coal seam depth, meanwhile, a set amount of liquid carbon dioxide is injected into a main pipe along the gas guide pipe and the inflation valve to ensure that the liquid carbon dioxide in the main pipe is at 7.2MPa, then the inflation valve is closed, when initiation is required, the electric heating wire is electrified through the initiation lead to heat the heat conduction pipe through the heat-generating electric heating wire, when the liquid carbon dioxide in the main pipe is heated to be higher than 31 ℃, the liquid carbon dioxide in the main pipe is rapidly gasified, the internal pressure of the main pipe is increased, the constant-pressure energy release pipe is broken, and carbon dioxide gas is ejected into the coal seam with the set depth at a high speed to expand the carbon dioxide in the coal seam, thereby further enlarging the coal seam crack, increasing the permeability of the coal seam and completing the blasting process.
Preferably, the detonation assembly comprises a vertically arranged heat conduction pipe, the heat conduction pipe is made of a copper pipe, and the upper end and the lower end of the heat conduction pipe are respectively communicated with the inflation valve and the main pipe.
Preferably, the outer circumference of the heat conduction tube is spirally wound with an electric heating wire, and the outer circumference of the heat conduction tube outside the electric heating wire is provided with a protective cover.
Preferably, two groups of detonating wires are symmetrically arranged on two sides of the outer portion of the protective cover, the detonating wires are electrically connected with the heating wire, and the top ends of the detonating wires are wound on the outer circumferential side of the gas guide tube.
Preferably, the locking assembly comprises a cylindrical mounting cylinder with an open bottom end, an auxiliary hole is formed in the center of the top end of the mounting cylinder, the mounting cylinder is communicated with the constant-pressure energy release pipe through the auxiliary hole, an adjusting block is arranged inside the mounting cylinder and made of rubber, and the adjusting block and the inner wall of the mounting cylinder are in sliding sealing.
Preferably, the regulating block below the bilateral symmetry is provided with two sets of the locking plate that leans out in the installation section of thick bamboo, installation bobbin base portion both sides correspond the locking plate is provided with the guide way, both sides all vertically are provided with the support in the installation section of thick bamboo the locking plate pivoted pivot, and two sets of the locking plate top outside all is provided with the magnetic path, this magnetic path with the connection is inhaled to installation section of thick bamboo inside wall magnetism.
Has the advantages that: the utility model discloses a set up liquid carbon dioxide as the blasting medium, utilize liquid carbon dioxide heating rapid gasification principle to realize the blasting action of level pressure let-down pipe to produce the high-pressure wave, crack in order to explode the coal seam, improve the coal seam permeability, the security is higher simultaneously, vibrations and striking all can't detonate, it is higher to deposit the transportation security, inflation valve and detonating subassembly repeatedly usable practice thrift the cost, and the practicality is strong.
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 these drawings without creative efforts.
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is an internal structural view of the present invention;
fig. 3 is an internal structure view of the stopper plate in the expanded state.
The reference numerals are explained below:
1. an inflation valve; 101. an inflation joint; 102. an air duct; 2. a main pipe; 3. a detonation assembly; 301. a heat conducting pipe; 302. an electric heating wire; 303. detonating the lead; 4. a seal ring; 5. a constant pressure energy release pipe; 6. a stop assembly; 601. mounting the cylinder; 601a, an auxiliary hole; 601b, a guide groove; 602. an adjusting block; 603. a stopper plate; 603a, a rotating shaft; 604. a magnetic block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the utility model provides a coal mine gas drainage deep hole presplitting blasting permeability-increasing structure, including inflation valve 1 and main pipe 2, main pipe 2 sets up below inflation valve 1, and the intercommunication has detonating subassembly 3 between inflation valve 1 and the main pipe 2, main pipe 2 below is provided with level pressure let-off pipe 5, after detonating subassembly 3 and main pipe 2, the liquid carbon dioxide gasification of level pressure let-off pipe 5 and the main pipe 2 intussuseption, should level pressure let-off pipe 5 explode after pressure surpasses level pressure let-off pipe 5 set value, thereby blast permeability-increasing to the coal seam through gasified carbon dioxide;
the joint of the main pipe 2 and the constant pressure energy release pipe 5 is provided with a sealing ring 4, the bottom end of the constant pressure energy release pipe 5 is provided with a stop component 6, the stop component 6 is used for improving the support stability of the depth and depth coal seam position of the whole equipment in a blasting pore channel, the top end of the inflation valve 1 is provided with an inflation connector 101, and the top end of the inflation connector 101 is provided with an air duct 102 communicated with the inflation valve 1.
As an alternative embodiment, the initiation assembly 3 includes a vertically disposed heat pipe 301, the heat pipe 301 is made of a copper pipe, the upper and lower ends of the heat pipe 301 are respectively communicated with the charging valve 1 and the main pipe 2, an electric heating wire 302 is spirally wound on the outer circumferential side of the heat pipe 301, a protective cover is disposed on the outer circumferential side of the heat pipe 301 outside the electric heating wire 302, two sets of initiation wires 303 are symmetrically disposed on two sides of the protective cover, the initiation wires 303 are electrically connected with the electric heating wire 302, and the top ends of the initiation wires 303 are wound on the outer circumferential side of the;
the stopping component 6 comprises a cylindrical mounting cylinder 601 with an opening at the bottom end, an auxiliary hole 601a is arranged at the center of the top end of the mounting cylinder 601, the mounting cylinder 601 is communicated with the constant pressure energy releasing pipe 5 through the auxiliary hole 601a, an adjusting block 602 is arranged inside the mounting cylinder 601, the adjusting block 602 is made of rubber, the adjusting block 602 is in sliding seal with the inner wall of the mounting cylinder 601, two groups of stopping plates 603 inclining outwards are symmetrically arranged at two sides in the mounting cylinder 601 below the adjusting block 602, guide grooves 601b are arranged at two sides of the bottom of the mounting cylinder 601 corresponding to the stopping plates 603, rotating shafts 603a for supporting the stopping plates 603 to rotate are longitudinally arranged at two sides in the mounting cylinder 601, magnetic blocks 604 are arranged at the outer sides of the tops of the two groups of stopping plates 603, the magnetic blocks 604 are in magnetic connection with the inner side wall of the mounting cylinder 601, after the device is integrally arranged in a required blasting coal seam, liquid carbon dioxide is, the pressure in the constant pressure energy releasing pipe 5 rises along with the main pipe 2, the adjusting block 602 in the mounting cylinder 601 is pressed down by the pressure in the constant pressure energy releasing pipe 5, so that the adjusting block 602 moves downwards to push the two groups of stop plates 603 to be unfolded towards two sides around the rotating shaft 603a, the bottom ends of the two groups of stop plates 603 rotate outwards and are clamped into the corresponding coal layers, and the positioning and reinforcing process of the whole structure of the equipment is realized.
By adopting the structure, when the blasting permeability-increasing device is used and the set coal seam depth needs to be blasted and increased, the whole device is arranged in the corresponding pore channel to move to the set coal seam depth, meanwhile, the set amount of liquid carbon dioxide is injected into the main pipe 2 along the air duct 102 and the inflation valve 1 to ensure that the liquid carbon dioxide in the main pipe 2 is at 7.2MPa, then the inflation valve 1 is closed, when the detonation is needed, the electric heating wire 302 is electrified through the detonation conducting wire 303 to heat the heat conducting pipe 301 through the electric heating wire 302, when the liquid carbon dioxide in the main pipe 2 is heated to be over 31 ℃, the liquid carbon dioxide in the main pipe 2 is rapidly gasified, meanwhile, the pressure in the main pipe 2 is increased, the constant-pressure energy-releasing pipe 5 is broken, the carbon dioxide is ejected into the coal seam with the set depth at a high speed to expand the carbon dioxide in the coal seam, increasing the permeability of the coal bed to finish the blasting process;
through setting up liquid carbon dioxide as the blasting medium, utilize liquid carbon dioxide heating rapid gasification principle to realize the blasting action of level pressure let-down pipe 5 to produce the high-pressure wave, in order to carry out the blasting cracking to the coal seam, improve the coal seam permeability, the security is higher simultaneously, vibrations and striking all can't be detonated, it is higher to deposit the transportation security, inflation valve 1 and 3 repeatedly usable of detonating subassembly, practice thrift the cost, the practicality is strong.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a coal mine gas drainage deep hole presplitting blasting anti-reflection structure which characterized in that: the explosion-proof device comprises an inflation valve (1) and a main pipe (2), wherein the main pipe (2) is arranged below the inflation valve (1), an explosion component (3) is communicated between the inflation valve (1) and the main pipe (2), and a constant-pressure energy release pipe (5) is arranged below the main pipe (2);
be responsible for (2) with constant pressure energy release pipe (5) department of meeting is provided with sealing washer (4), just constant pressure energy release pipe (5) bottom is provided with locking subassembly (6), inflation valve (1) top is provided with inflatable joint (101), inflatable joint (101) top is provided with the intercommunication air duct (102) of inflation valve (1).
2. The coal mine gas extraction deep hole presplitting blasting permeability increasing structure is characterized in that: the detonation component (3) comprises a vertically arranged heat conduction pipe (301), the heat conduction pipe (301) is made of a copper pipe, and the upper end and the lower end of the heat conduction pipe (301) are respectively communicated with the charging valve (1) and the main pipe (2).
3. The coal mine gas extraction deep hole presplitting blasting permeability increasing structure of claim 2, which is characterized in that: the heating wire (302) is spirally wound on the outer circumference side of the heat conduction pipe (301), and a protective cover is arranged on the outer circumference side of the heat conduction pipe (301) outside the heating wire (302).
4. The coal mine gas extraction deep hole presplitting blasting permeability increasing structure of claim 3, which is characterized in that: two groups of detonating leads (303) are symmetrically arranged on two sides of the outer portion of the protective cover, the detonating leads (303) are electrically connected with the electric heating wire (302), and the top ends of the detonating leads (303) are wound on the outer circumferential side of the air duct (102).
5. The coal mine gas extraction deep hole presplitting blasting permeability increasing structure is characterized in that: the stop assembly (6) comprises a cylindrical mounting cylinder (601) with an opening at the bottom end, an auxiliary hole (601a) is formed in the center of the top end of the mounting cylinder (601), the mounting cylinder (601) is communicated with the constant-pressure energy release pipe (5) through the auxiliary hole (601a), an adjusting block (602) is arranged inside the mounting cylinder (601), the adjusting block (602) is made of rubber, and the adjusting block (602) and the inner wall of the mounting cylinder (601) are in sliding sealing.
6. The coal mine gas extraction deep hole presplitting blasting permeability increasing structure of claim 5, which is characterized in that: the utility model discloses a magnetic bearing installation barrel, including adjusting block (602) below adjusting block (602) bilateral symmetry in installation barrel (601) is provided with two sets of check plate (603) that lean out, installation barrel (601) bottom both sides correspond check plate (603) are provided with guide way (601b), both sides all vertically are provided with the support in installation barrel (601) check plate (603) pivoted pivot (603a), and two sets of check plate (603) top outside all is provided with magnetic path (604), this magnetic path (604) with the connection is inhaled to installation barrel (601) inside wall magnetism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022717619.8U CN213510566U (en) | 2020-11-23 | 2020-11-23 | Coal mine gas extraction deep hole presplitting blasting permeability-increasing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022717619.8U CN213510566U (en) | 2020-11-23 | 2020-11-23 | Coal mine gas extraction deep hole presplitting blasting permeability-increasing structure |
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| Publication Number | Publication Date |
|---|---|
| CN213510566U true CN213510566U (en) | 2021-06-22 |
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|---|---|---|---|
| CN202022717619.8U Expired - Fee Related CN213510566U (en) | 2020-11-23 | 2020-11-23 | Coal mine gas extraction deep hole presplitting blasting permeability-increasing structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790080A (en) * | 2021-10-11 | 2021-12-14 | 辽宁工程技术大学 | Low-permeability and difficult-desorption coal seam blasting and gas injection combined enhanced gas extraction device and method |
| CN116255124A (en) * | 2023-03-03 | 2023-06-13 | 平顶山天安煤业股份有限公司 | CO (carbon monoxide) 2 Automatic dislocation fracturing coal seam permeability-increasing device and gas enhanced extraction method |
-
2020
- 2020-11-23 CN CN202022717619.8U patent/CN213510566U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790080A (en) * | 2021-10-11 | 2021-12-14 | 辽宁工程技术大学 | Low-permeability and difficult-desorption coal seam blasting and gas injection combined enhanced gas extraction device and method |
| CN113790080B (en) * | 2021-10-11 | 2023-12-05 | 辽宁工程技术大学 | Low-permeability and difficult-desorption coal seam blasting and gas injection combined enhanced gas extraction device and method |
| CN116255124A (en) * | 2023-03-03 | 2023-06-13 | 平顶山天安煤业股份有限公司 | CO (carbon monoxide) 2 Automatic dislocation fracturing coal seam permeability-increasing device and gas enhanced extraction method |
| CN116255124B (en) * | 2023-03-03 | 2024-03-12 | 平顶山天安煤业股份有限公司 | CO (carbon monoxide) 2 Automatic dislocation fracturing coal seam permeability-increasing device and gas enhanced extraction method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210622 Termination date: 20211123 |