CN201258756Y - Telescopic type hole packer for coal mine downhole - Google Patents
Telescopic type hole packer for coal mine downhole Download PDFInfo
- Publication number
- CN201258756Y CN201258756Y CNU2008201229677U CN200820122967U CN201258756Y CN 201258756 Y CN201258756 Y CN 201258756Y CN U2008201229677 U CNU2008201229677 U CN U2008201229677U CN 200820122967 U CN200820122967 U CN 200820122967U CN 201258756 Y CN201258756 Y CN 201258756Y
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- hole
- water
- inner tube
- pipe
- outer layer
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Abstract
The utility model discloses a telescopic hole sealing device for water injection, dust prevention and gas pumping in the underground coal seam of the coal mine, which comprises an end base, an outer sleeve, an inner tube, a large-diameter screw and an auxiliary injection water pipe; the inner tube is connected with the end bases at the two ends through the large-diameter screws; and the inside of the inner tube is in a spiral shape. Because of the structure of the spiral inner tube, when the outer sleeve expands in the radial direction and closely contacts with the coal seam under the effect of the high pressure water; the inner tube shrinks in the axial direction along the outer sleeve; the hole is sealed at first and then the water is injected; and the hole sealing effect is good. The utility model has the advantages of simple structure, convenient carrying and operating, wide range of application and the like. Therefore, the utility model not only can be used for injecting the water and seal the hole, but also can be used for pumping the gas to seal the hole.
Description
Technical field
The utility model belongs to the Coal Production field, relates to a kind of extension type hole packer that is used for coal mine underground coal bed water injection dust control and gas drainage under suction.
Technical background
High speed development along with coal industry and Coal Production mechanization, dust hazard problem in the Coal Production is still severe, and the sick incidence of disease of coal worker's pneumoconiosis is higher, and coal-dust explosion happens occasionally, and coal and gas outstanding be a kind of serious natural calamity under the coal mine, seriously restrict the safety in production in colliery.Coal-bed flooding is to solve one of comparatively advanced measure of dust hazard problem, and carrying out gas drainage under suction in advance is to solve coal and the outstanding effective ways of gas, and coal-bed flooding and gas drainage under suction all need be carried out sealing of hole.The method for sealing that adopts mainly contains cement mortar method of pore sealing, polyurethane sealing of hole method and hole packer method of pore sealing at present.Cement mortar method of pore sealing labour intensity is big, and efficient is low, and the sealing of hole weak effect can not be fetched after water-injection steel pipe is imbedded, and stays hidden danger to coal mining activity; Polyurethane sealing of hole method, sealing of hole intensity is little, and sealing of hole leaks gas easily apart from weak point; Pipe also all adopts steel pipe in the hole packer that common hole packer method of pore sealing adopts, the outer layer sleeve two ends are fixed on the water-injection steel pipe, and outer layer sleeve longitudinal dilatation axial shrinkage makes outer layer sleeve and water-injection steel pipe junction break easily during the pressurising sealing, the damage hole packer does not reach the sealing of hole effect.
Summary of the invention
The purpose of this utility model provide a kind of in pipe can be with the outer layer sleeve axial stretching, can realize water filling, simple in structure behind the first sealing of hole, carry easy to operately, not only adapted to the coal-bed flooding sealing of hole but also adapted to the underground mine use extension type hole packer of gas drainage under suction sealing of hole.
To achieve these goals, the utility model comprises the end seat that has through hole, outer layer sleeve, interior pipe, major diameter screw, the auxiliary water injection pipe that links to each other with through hole on the end seat.Interior pipe is connected with the end seat at two ends by the major diameter screw, forms the pressurising chamber between interior pipe, outer layer sleeve and the two ends end seat, and the pressurising chamber communicates with auxiliary water injection pipe.
Interior pipe in the utility model adopts high pressure resistant rubber tube, and curl arranges to have certain elasticity, and when outer layer sleeve during in the effect lower edge of press water longitudinal dilatation sealing boring, interior pipe can shrink vertically with outer layer sleeve.The press water of outer layer sleeve is to be provided by voltage supply device independently, can realize after the boring sealing of hole immediately, water filling or draw out methane again behind the sealing of hole, and the sealing of hole effect with whether water filling, water injection pressure etc. irrelevant.
Operating principle of the present utility model is as follows: during use hole packer is put into the boring precalculated position, to assist water injection pipe to link to each other with voltage supply water pump independently, press water enters the pressurising chamber by auxiliary water injection pipe, outer layer sleeve just expands rapidly when reaching the pressure of regulation, caliber increases simultaneously and axially shortens, make the hole packer outer layer sleeve closely attached on the hole wall of coal seam by the bigger frictional resistance that elastomeric material produced, realize sealing of hole.For the coal-bed flooding operation, behind the sealing of hole high pressure water injection pipeline is linked to each other with the through hole of sitting up straight, carry out the water filling operation, be that continuous water filling or batch (-type) water filling do not influence the sealing of hole effect; For the gas drainage under suction operation, behind the sealing of hole gas drainage system is linked to each other with the through hole of sitting up straight, carry out the gas drainage under suction operation.After operation was finished, the pipe valve of opening on the auxiliary water injection pipe was emitted the press water in the pressurising chamber, and hole packer restores to the original state under the effect of self restorability, can take out from boring, realizes reusing.
The utility model is owing to adopt the helical form inner tube structure, when outer layer sleeve when expanded radially closely contacts with the coal seam under the water under high pressure effect, interior pipe with outer layer sleeve along the outer layer sleeve axial shrinkage, can realize water filling behind the first sealing of hole, sealing of hole is effective, also have simple in structure, carry characteristics such as easy to operate, wide application, both can be applicable to the water filling sealing of hole, also can be applicable to the sealing of hole that draws out methane.
Description of drawings:
Fig. 1 is a semi-section structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, the utility model comprises the end seat 1 that has through hole, outer layer sleeve 2, interior pipe 3, major diameter screw 4, the auxiliary water injection pipe 5 that links to each other with through hole on the end seat.In pipe 3 be connected with the end seat 1 at two ends by major diameter screw 4, end 1 is used to connect the high pressure water injection system or the system that draws out methane.Outer layer sleeve 4 closely is connected with end seat 1, forms pressurising chamber 6 between interior pipe 3, outer layer sleeve 4 and the two ends end seat 1.Pressurising chamber 6 communicates with auxiliary water injection pipe 5.Interior pipe 3 adopts high pressure resistant rubber tube, and outer layer sleeve 2 adopts rubber.
Claims (3)
1, a kind of underground mine use extension type hole packer is characterized in that it is made up of the end seat (1) that has through hole, outer layer sleeve (2), interior pipe (3), major diameter screw (4), the auxiliary water injection pipe (5) that links to each other with through hole on the end seat (1); Pipe (3) is connected with the end seat (1) at two ends by major diameter screw (4) in described, forms pressurising chamber (6) between interior pipe (3), outer layer sleeve (2) and the two ends end seat, and pressurising chamber (6) communicate with auxiliary water injection pipe (5).
2, underground mine use extension type hole packer according to claim 1.It is characterized in that: pipe (3) curl is arranged in described.
3, underground mine use extension type hole packer according to claim 1.It is characterized in that: pipe (3) is high pressure resistant rubber tube in described, and the material of outer layer sleeve (2) is a rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201229677U CN201258756Y (en) | 2008-10-16 | 2008-10-16 | Telescopic type hole packer for coal mine downhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201229677U CN201258756Y (en) | 2008-10-16 | 2008-10-16 | Telescopic type hole packer for coal mine downhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258756Y true CN201258756Y (en) | 2009-06-17 |
Family
ID=40772988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201229677U Expired - Fee Related CN201258756Y (en) | 2008-10-16 | 2008-10-16 | Telescopic type hole packer for coal mine downhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258756Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing device |
| CN103527242A (en) * | 2013-10-30 | 2014-01-22 | 华北科技学院 | United under pressure gas drainage hole sealing method and applied double-layer expansion rubber pipes thereof |
| CN108592723A (en) * | 2018-05-04 | 2018-09-28 | 中国矿业大学 | A kind of underground blasting water filling integration hole packer |
| CN108775233A (en) * | 2018-05-04 | 2018-11-09 | 中国矿业大学 | A kind of underground deep hole standing shot water filling integration hole sealing device |
| CN108798590A (en) * | 2018-05-04 | 2018-11-13 | 中国矿业大学 | A kind of down-hole coal bed water filling hole sealing device |
-
2008
- 2008-10-16 CN CNU2008201229677U patent/CN201258756Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268973A (en) * | 2010-06-04 | 2011-12-07 | 淮南矿业(集团)有限责任公司 | Hole sealing device |
| CN103527242A (en) * | 2013-10-30 | 2014-01-22 | 华北科技学院 | United under pressure gas drainage hole sealing method and applied double-layer expansion rubber pipes thereof |
| CN103527242B (en) * | 2013-10-30 | 2016-08-03 | 华北科技学院 | A kind of double-deck Dilated rubber hose combining gas drainage plugging method with pressure and application thereof |
| CN108592723A (en) * | 2018-05-04 | 2018-09-28 | 中国矿业大学 | A kind of underground blasting water filling integration hole packer |
| CN108775233A (en) * | 2018-05-04 | 2018-11-09 | 中国矿业大学 | A kind of underground deep hole standing shot water filling integration hole sealing device |
| CN108798590A (en) * | 2018-05-04 | 2018-11-13 | 中国矿业大学 | A kind of down-hole coal bed water filling hole sealing device |
| CN108775233B (en) * | 2018-05-04 | 2020-06-09 | 中国矿业大学 | Deep hole is not hard up blasting water injection integration hole sealing device in pit |
| AU2018421568B2 (en) * | 2018-05-04 | 2021-02-25 | China University Of Mining And Technology | Underground deep hole loosening blasting and water injection intergrated hole sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20111016 |