CN201202491Y - Pressure expanding seal hole gas extractor - Google Patents
Pressure expanding seal hole gas extractor Download PDFInfo
- Publication number
- CN201202491Y CN201202491Y CNU2008200132706U CN200820013270U CN201202491Y CN 201202491 Y CN201202491 Y CN 201202491Y CN U2008200132706 U CNU2008200132706 U CN U2008200132706U CN 200820013270 U CN200820013270 U CN 200820013270U CN 201202491 Y CN201202491 Y CN 201202491Y
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- steel pipe
- hole
- wall
- sebific duct
- ring
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Abstract
Disclosed is a pressure expansion hole sealing gas extractor, which comprises a steel pipe; a gas inlet at one end of the steel pipe is connected with a dust filter cap; the steel pipe is cased in a rubber hose; both ends of the rubber holes are provided with inner thread joints; a cylindrical gap is arranged between the outer wall of the steel pipe and the inner wall of the rubber hose; a connecting thrust ring is positioned and connected on the sidewall of the steel pipe; one side of the connecting thrust ring is provided with outer thread matching the inner threads of the rubber hose joints; the connecting thrust ring is provided with an axial pressurized hole; a movable blocking ring is sleeved on one end of the steel pipe and near the gas inlet; one side of the movable blocking ring is provided with outer thread matching with the inner threads of the rubber joints; and inner threads of the joints at both ends of the rubber hose are respectively screwed on the outer threads of the connecting thrust ring and the movable blocking ring. When in use, through the method of pressuring the cylindrical gap between the outer wall of the steel pipe and the inner wall of the rubber hose through the pressurized hole, the pressure expansion hole sealing gas extractor can be easily arranged in a long hole or pinnate hole-shaped round hole on an end face of the coal bed; after the extraction work is completed, the pressure in the cylindrical gap between the outer wall of the steel pipe and the inner wall of the rubber hose is exhausted, so that the gas extractor can be easily removed from the hole for reuse.
Description
Technical field
The utility model relates to a kind of coal bed gas withdrawal device, particularly a kind of hole sealing device of coal bed gas withdrawal device.
Background technology
The association of original coal seam has coal bed gas, coal bed gas claims coalbed methane (CBM) again, is commonly called as " gas ", it is that original coal seam process biochemistry pyrolysis in the coal-forming process belongs to unconventional natural gas to adsorb or the natural-gas of free state association in coal seam and solid rock.Methane content is more than 95% in the coal bed gas, and its calorific value is a kind of calorific value height, free of contamination clean energy resource and valuable industrial chemicals greater than 8100KCal/m3.Because coal bed gas is present in the original coal seam, very big to the safety of coal mines threat when mining, be the one of the main reasons that causes the colliery down-hole accident.Coal bed gas can be aggravated the greenhouse effect in the whole world along with the exploitation of coal leaks in the atmosphere, influences environment.If before mining; elder generation's extraction goes out the coal bed gas in the original coal seam; coal bed gas is recycled, the gas emission in the Coal Production is greatly reduced, have multi-efficiencies such as the Safety of Coal Mine Production of improvement situation, protection environment and increase new forms of energy.At present, each state is all in the recycling of paying attention to coal bed gas.The average sucrose extraction of China's mine gas only has 23%, and the mine gas sucrose extraction of main producing coal countries such as the U.S., Australia is all more than 50%.
During coal bed gas in the original coal seam of down-hole extraction, to get out slotted hole or pinniform hole along the coal seam at a end face without working seam, the coal bed gas withdrawal device is inserted in aperture in slotted hole or pinniform hole, the coal bed gas withdrawal device has steel pipe, and an end of steel pipe is an air intake, and the other end is the gas outlet, air intake is connected with filter dirt cap, filter dirt cap has short tube, and the sidewall of short tube is evenly equipped with air inlet, and the short tube inwall is coated with screen cloth.During installation, the steel pipe air intake of coal bed gas withdrawal device is inserted in the slotted hole from the aperture in slotted hole or pinniform hole, the steel pipe gas outlet is stayed outside the aperture, in order to implement the extraction operation, be fixed on the place, aperture to the coal bed gas withdrawal device and allow cylindrical shape clearance seal between outer wall of steel pipe and the aperture inwall.In the prior art, be that polyurethane with foam-in-place is filled in the outer wall of steel pipe and the cylindrical shape gap between the inwall of aperture that inserts the aperture, locate the cylindrical shape clearance seal between the outer wall of steel pipe in the insertion aperture of coal bed gas withdrawal device and the aperture inwall and the aperture that steel pipe is fixed on slotted hole or pinniform hole with foamed polyurethane.During use, the gas outlet of steel pipe is linked to each other with gas extraction machine, the coal bed gas in the coal seam is come out by the steel pipe extraction through slotted hole or pinniform hole.This coal bed gas withdrawal device has following deficiency: 1. and pretty troublesome with on-the-spot method installation of filling of foamed polyurethane material and sealing coal bed gas withdrawal device, emit pernicious gas during the polyurethane foaming, influence construction environment, be unfavorable for constructor's health;
2. after coal bed gas extraction work was finished, the coal bed gas withdrawal device that is fixed on the place, aperture with the on-the-spot method of filling of foamed polyurethane material was difficult for reclaiming.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, propose a kind of easy for installation, do not influence the pressure expanded hole-sealing gas extractor that construction environment, coal bed gas extraction work reclaim after finishing easily.
The utility model is realized with the following method.
Pressure expanded hole-sealing gas extractor has steel pipe, one end of steel pipe is an air intake, the other end is the gas outlet, air intake is connected with filter dirt cap, filter dirt cap has short tube, the sidewall of short tube is evenly equipped with air inlet, the short tube inwall is coated with screen cloth, be with two ends on the steel pipe sebific duct with female adapter is arranged, between the outer wall of steel pipe and the inwall of sebific duct the cylindrical shape gap is arranged, steel pipe near gas outlet one end sidewall on the location be connected with the connection baffle ring, connect baffle ring the external screw thread that matches with the internal thread of sebific duct one end joint is arranged towards air intake one side, connect on the baffle ring axial pressure hole is arranged, the aperture of pressurization hole one side towards the gas outlet is connected with forcing pipe, the cylindrical shape gap of pressurization hole between the inwall of the outer wall of the aperture of air intake one side and steel pipe and sebific duct communicates, steel pipe is near being with movable stifled ring on air intake one end, one side has the external screw thread that matches with the internal thread of sebific duct other end joint to movable stifled ring towards the gas outlet, the internal thread of sebific duct two end joints is spun on respectively on the external screw thread that connects baffle ring and movable stifled ring, and connecting between baffle ring and movable stifled ring and the rubber hose coupling has joint ring respectively.
During use, on the forcing pipe of the utility model connection baffle ring, connect pneumatic supply or hydraulic power source, the utility model is inserted in without getting out in the circular orifices in slotted hole or pinniform hole along the coal seam on the end face of working seam, the internal diameter of circular orifices is a bit larger tham sebific duct external diameter of the present utility model, cylindrical shape gap between outer wall of steel pipe of the present utility model and sebific duct inwall charges into air pressure or hydraulic pressure with pneumatic supply or hydraulic power source, the rubber-like sebific duct is because of stressed expansion, sebific duct outer wall after the expansion is close to the inwall of circular orifices, makes the utility model be fixed on aperture place and allows tubular clearance seal between outer wall of steel pipe and the aperture inwall.When bleeding, the gas outlet of steel pipe is linked to each other with gas extraction machine, the coal bed gas in the coal seam is come out by the steel pipe extraction through slotted hole or pinniform hole.After coal bed gas extraction work is finished, discharge the pneumatic-hydraulic in the cylindrical shape gap between outer wall of steel pipe of the present utility model and the sebific duct inwall, sebific duct restores to the original state.
Be with two ends on the utility model steel pipe the sebific duct with female adapter is arranged, sebific duct links to each other with steel pipe with movable stifled ring with the connection baffle ring of outer wall of steel pipe, between the outer wall of steel pipe and the inwall of sebific duct the cylindrical shape gap is arranged, connect the axial pressure hole that communicates, cylindrical shape gap between the inwall that has on the baffle ring with the outer wall of steel pipe and sebific duct.The utility model in use, get out in the circular orifices in slotted hole or pinniform hole along the coal seam on being installed in without an end face of working seam easily with the method that the pressurising of cylindrical shape gap is arranged between the inwall of the outer wall of steel pipe and sebific duct, after coal bed gas extraction work is finished, there be can taking out from the aperture easily of cylindrical shape gap internal pressure to reclaim between the inwall with outer wall of discharging steel pipe and sebific duct.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 cuts open the fractionation schematic diagram according to the master office of looking of a kind of pressure expanded hole-sealing gas extractor of invention scheme proposition of the present utility model;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is that schematic diagram cuts open in the master office of looking that is connected with the pressure expanded hole-sealing gas extractor of dirt catcher;
Fig. 4 is that the B of dirt catcher cuts open schematic diagram to office among Fig. 3.
The specific embodiment
Fig. 1, among Fig. 2, pressure expanded hole-sealing gas extractor has steel pipe 1, one end of steel pipe is an air intake 2, the other end is gas outlet 3, air intake is connected with filter dirt cap 4, filter dirt cap has short tube 5, the sidewall of short tube is evenly equipped with air inlet 6, the short tube inwall is coated with screen cloth 7, being with two ends on the steel pipe has and has female adapter 8,9 sebific duct 10, it is 5～20 millimeters cylindrical shape gap 11 that wall thickness is arranged between the outer wall of steel pipe and the inwall of sebific duct, steel pipe near gas outlet one end sidewall on the location be connected with and connect baffle ring 12, connect baffle ring the external screw thread 13 that matches with the internal thread of sebific duct one end joint 8 is arranged towards air intake one side, connect on the baffle ring axial pressure hole 15 is arranged, the aperture of pressurization hole one side towards the gas outlet is connected with forcing pipe 16, the cylindrical shape gap of pressurization hole between the inwall of the outer wall of the aperture of air intake one side and steel pipe and sebific duct communicates, steel pipe is near being with movable stifled ring 17 on air intake one end, one side has the external screw thread 18 that matches with the internal thread of sebific duct other end joint 9 to movable stifled ring towards the gas outlet, the internal thread of sebific duct two end joints is spun on respectively on the external screw thread that connects baffle ring and movable stifled ring, and connecting between baffle ring and movable stifled ring and the rubber hose coupling has joint ring 14 respectively, 19.
With gas extraction machine during by the coal bed gas in the utility model extraction coal seam, because be use the negative pressure extraction, can be also sucking-off in the coal seam of the dust in the coal seam, the dust of sucking-off can enter gas and extract chance and damage gas extraction machine.Air intake of the present utility model is connected with filter dirt cap and can not prevents from effectively dust in the sucking-off coal seam in order to prevent effectively that dust from entering gas and extracting machine, can be connected with dirt catcher in the gas outlet.
Among Fig. 3, Fig. 4, the gas outlet 3 of pressure expanded hole-sealing gas extractor is connected with dirt catcher 21, dirt catcher has cylindrical shell 22, there is tangential inlet 23 the housing side, there is outlet 24 upper end of housing, and there is dust-exhausting port 25 lower end of housing, and the cylindrical baffle 26 that links to each other with the upper surface is arranged in the housing, the axis of cylindrical baffle and the axis of cylindrical shell have filter medium 27 in the cylindrical baffle on same straight line.
Claims (3)
1. pressure expanded hole-sealing gas extractor, steel pipe is arranged, one end of steel pipe is an air intake, the other end is the gas outlet, air intake is connected with filter dirt cap, filter dirt cap has short tube, the sidewall of short tube is evenly equipped with air inlet, the short tube inwall is coated with screen cloth, it is characterized in that: being with two ends on the steel pipe has the sebific duct with female adapter, between the outer wall of steel pipe and the inwall of sebific duct the cylindrical shape gap is arranged, steel pipe near gas outlet one end sidewall on the location be connected with the connection baffle ring, connect baffle ring the external screw thread that matches with the internal thread of sebific duct one end joint is arranged towards air intake one side, connect on the baffle ring axial pressure hole is arranged, the aperture of pressurization hole one side towards the gas outlet is connected with forcing pipe, the cylindrical shape gap of pressurization hole between the inwall of the outer wall of the aperture of air intake one side and steel pipe and sebific duct communicates, steel pipe is near being with movable stifled ring on air intake one end, one side has the external screw thread that matches with the internal thread of sebific duct other end joint to movable stifled ring towards the gas outlet, the internal thread of sebific duct two end joints is spun on respectively on the external screw thread that connects baffle ring and movable stifled ring, and connecting between baffle ring and movable stifled ring and the rubber hose coupling has joint ring respectively.
2. by the described pressure expanded hole-sealing gas extractor of claim 1, it is characterized in that: described gas outlet is connected with dirt catcher, dirt catcher has cylindrical shell, there is tangential inlet the housing side, there is outlet the upper end of housing, and there is dust-exhausting port the lower end of housing, and the cylindrical baffle that links to each other with the upper surface is arranged in the housing, the axis of cylindrical baffle and the axis of cylindrical shell have filter medium in the cylindrical baffle on same straight line.
3. by claim 1 or 2 described pressure expanded hole-sealing gas extractors, it is characterized in that: the wall thickness of cylinder that the cylindrical shape gap is arranged between the outer wall of described steel pipe and the inwall of sebific duct is 5～20 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200132706U CN201202491Y (en) | 2008-06-03 | 2008-06-03 | Pressure expanding seal hole gas extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200132706U CN201202491Y (en) | 2008-06-03 | 2008-06-03 | Pressure expanding seal hole gas extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202491Y true CN201202491Y (en) | 2009-03-04 |
Family
ID=40424805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200132706U Expired - Fee Related CN201202491Y (en) | 2008-06-03 | 2008-06-03 | Pressure expanding seal hole gas extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202491Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881149A (en) * | 2010-06-17 | 2010-11-10 | 山西潞安环保能源开发股份有限公司 | Heat injection drilling and sealing method of heating coalbed |
| CN105298433A (en) * | 2015-09-21 | 2016-02-03 | 河南理工大学 | Hydraulic pressing, flushing and pumping integrated hole sealing device and method |
-
2008
- 2008-06-03 CN CNU2008200132706U patent/CN201202491Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881149A (en) * | 2010-06-17 | 2010-11-10 | 山西潞安环保能源开发股份有限公司 | Heat injection drilling and sealing method of heating coalbed |
| CN105298433A (en) * | 2015-09-21 | 2016-02-03 | 河南理工大学 | Hydraulic pressing, flushing and pumping integrated hole sealing device and method |
| CN105298433B (en) * | 2015-09-21 | 2017-10-10 | 河南理工大学 | A kind of waterpower pressure, rush, take out integrated hole sealing device and method |
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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: 20090304 Termination date: 20100603 |