CN203772842U - Coal and gas outburst simulation device based on air cylinder - Google Patents
Coal and gas outburst simulation device based on air cylinder Download PDFInfo
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- CN203772842U CN203772842U CN201420196120.9U CN201420196120U CN203772842U CN 203772842 U CN203772842 U CN 203772842U CN 201420196120 U CN201420196120 U CN 201420196120U CN 203772842 U CN203772842 U CN 203772842U
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Abstract
The utility model relates to a coal and gas outburst simulation device based on an air cylinder. The coal and gas outburst simulation device comprises an air cylinder front end cover, a cylinder barrel, an air cylinder rear end cover, a sealing piston, a piston rod, a methane steel cylinder, a methane gas inlet pipe, a gas inlet pipe valve, a gas inlet pipe pressure gauge, an air compressor, formed lump coal, a circular steel sheet with a hole in the center, a coal injection pipe, a coal injection pipe pressure gauge, a coal injection pipe valve, and a cylindrical pipeline with scales. The coal and gas outburst simulation device is characterized in that after the formed lump coal is placed into the cylinder barrel, the air compressor is utilized for pressurizing the sealing piston to load a coal body, gas is fed in the coal body through the methane gas inlet pipe and a cylindrical slot hole channel from the top of the piston rod to the bottom end of the piston; after methane is adsorbed by the coal, readings of the pressure gauges on the gas inlet pipe and the coal injection pipe are compared to judge whether adsorption is balanced or not, and the coal body is injected into the cylindrical pipeline with scales after outburst. The coal and gas outburst simulation device provided by the utility model simulates preparation and occurrence processes of coal and gas outburst by carrying out pressurizing, gas injection, pressure maintenance and gas release on the coal body in the air cylinder, and the throwing distance of the coal body can be observed through the cylindrical pipeline with scales.
Description
Technical field
The utility model relates to a kind of coal and Gas Outburst analogue means based on cylinder.
Background technology
Coal and Gas Outburst disaster are a kind of serious dynamic disasters occurring in the down-hole coal excavation process of colliery, can destroy roadway facility, destroy mine ventilation system during generation, and coal petrography and gas are poured out, and cause massive losses such as producing interruption, casualties.It is reported, coal and Gas Outburst are the results by combined factors effects such as terrestrial stress, gas pressures, by setting up coal and the Gas Outburst analogue means based on cylinder, complete coal body destroyed ejection experiment under terrestrial stress gradient, the impact of gas pressure gradient, this device, than equipment cost was low, simple in the past, is verified again coal and Gas Outburst principle simultaneously preferably.
Summary of the invention
In order to simulate preparation and the generating process of coal and Gas Outburst, the utility model, in coal and Gas Outburst theoretical foundation, provides a kind of coal and Gas Outburst analogue means based on cylinder, and this installation cost is lower, use is simple.
The utility model for simulating coal and the preparation of Gas Outburst and the technical scheme that generating process adopts is: a kind of coal and Gas Outburst analogue means based on cylinder, is comprised of cylinder front end end cover, cylinder barrel, cylinder rear end cap, packed-piston, piston rod, methane steel cylinder, methane draft tube, draft tube valve, suction press table, air compressor, moulding lump coal, center circular steel disc with holes, coal injection pipe, coal injection pipe tensimeter, coal injection pipe valve, band calibration circle cylindrical conduit.Center circular steel disc with holes seals with its surrounding after being fixed on cylinder barrel bottom, coal injection pipe is installed coal injection pipe tensimeter, coal injection pipe valve also penetrates cylinder and the center that is welded on circular steel film perforation with holes inwall from cylinder rear end cap (the expansive cement shutoff of rear end cap air intake opening) centre, insert in band calibration circle cylindrical conduit coal injection pipe other end, moulding lump coal is evenly placed on hole cylinder shape steel disc top and is subject to packed-piston bottom-loaded, cylinder front end end cover air intake opening is installed X-over and is connected air compressor escape pipe, the moulding lump coal of piston rod part and piston bottom end is by the Centromedian cylindrical slotted hole conducting of piston rod, piston rod part utilizes X-over to connect methane draft tube, draft tube is installed into tracheal pressure table successively, draft tube valve, finally be connected with methane steel cylinder.
Effect of the present utility model is: utilize air compressor draft tube to cylinder seal top land, to inject the gas of certain pressure, sealing rigidity piston base under artesian condition loads on moulding lump coal patrix and intends the impact of terrestrial stress on coal and Gas Outburst, by methane draft tube, to coal body, inject 0.8Mpa (or more than) methane gas and simulate gas pressure state when outstanding, close draft tube valve, coal body adsorption gas after waiting for a period of time, completes the outstanding preparatory stage.Until suction press table identical with coal injection pipe pressure gauge reading and stable after open coal injection pipe valve, abrupt release gas injection pressure, complete coal body destroyed ejection experiment under terrestrial stress gradient, the impact of gas pressure gradient, a large amount of coals and gas spray into band calibration circle cylindrical conduit after coal injection pipe, in band calibration circle cylindrical conduit, the different gas pressures of observable or terrestrial stress are dished out apart from size, the extent of injury that can be more outstanding coal.
The utility model has the following advantages: structure is simple, cost is low, easy to use, by gas injection pressurize repeatedly, simulate coal and Gas Outburst is prepared to test with genesis mechanism, with can more different gas pressures in calibration circle cylindrical conduit or terrestrial stress on the dish out impact of distance of coal body.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing 1 is the utility model one-piece construction schematic diagram.
In figure: 1-cylinder front end end cover, 2-cylinder barrel, 3-cylinder rear end cap, 4-packed-piston, 5-piston rod, 6-methane steel cylinder, 7-methane draft tube, 8-draft tube valve, 9-suction press table, 10-air compressor, 11-moulding lump coal, 12-center circular steel disc with holes, 13-coal injection pipe, 14-coal injection pipe tensimeter, 15-coal injection pipe valve, 16-band calibration circle cylindrical conduit.
Embodiment
Now the utility model is described in further detail by reference to the accompanying drawings.
Coal based on cylinder and a Gas Outburst analogue means, be comprised of cylinder front end end cover (1), cylinder barrel (2), cylinder rear end cap (3), packed-piston (4), piston rod (5), methane steel cylinder (6), methane draft tube (7), draft tube valve (8), suction press table (9), air compressor (10), moulding lump coal (11), center circular steel disc with holes (12), coal injection pipe (13), coal injection pipe tensimeter (14), coal injection pipe valve (15), band calibration circle cylindrical conduit (16).Center circular steel disc with holes (12) seals with its surrounding after being fixed on cylinder barrel (2) bottom, coal injection pipe (13) is installed coal injection pipe tensimeter (14), coal injection pipe valve (15) also penetrates cylinder and the center that is welded on circular steel disc with holes (12) hole inwall from cylinder rear end cap (3) centre (the expansive cement shutoff of rear end cap air intake opening), band calibration circle cylindrical conduit (16) is inserted in coal injection pipe (13) other end, moulding lump coal (11) is evenly placed on hole cylinder shape steel disc (12) top and is subject to packed-piston (4) bottom-loaded, cylinder front end end cover (1) air intake opening is installed X-over and is connected air compressor (10) escape pipe, the moulding lump coal (11) of piston rod (5) top and piston bottom end is by the Centromedian cylindrical slotted hole conducting of piston rod (5), piston rod (5) top utilizes X-over to connect methane draft tube (7), draft tube fits into tracheal pressure table (9) successively, draft tube valve (8), finally be connected with methane steel cylinder (6).
During experiment, ready-made moulding lump coal (11) layering is put into hole cylinder shape steel disc (12) top uniformly, start air compressor (10), air extrusion packed-piston (4) top of certain pressure is simulated to moulding lump coal (11) and apply stress definitely, after piston is stable, open methane steel cylinder (6) valve and draft tube valve (8), to coal body, inject 0.8Mpa (or more than) methane gas and simulate gas pressure state when outstanding, close draft tube valve (8), wait for after the complete adsorbed methane of coal body, open suction press table (9) and coal injection pipe tensimeter (14) switch, when two pressure gauge readings are stable and approach 0.8Mpa (or more than) after open coal injection pipe valve (15), abrupt release gas injection pressure, complete coal body in terrestrial stress gradient, the lower destroyed ejection experiment of gas pressure gradient impact, a large amount of coals and gas spray into band calibration circle cylindrical conduit (16) after coal injection pipe, observe the distance of outstanding coal on right cylinder pipeline, above process simulation coal and Gas Outburst prepare and generating process.
Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model is limited; in the scope of spirit of the present utility model and claim protection, any modification and change that the utility model is made, all fall into the scope that the utility model is protected.
Claims (1)
1. the coal based on cylinder and a Gas Outburst analogue means, comprise cylinder front end end cover (1), cylinder barrel (2), cylinder rear end cap (3), packed-piston (4), piston rod (5), methane steel cylinder (6), methane draft tube (7), draft tube valve (8), suction press table (9), air compressor (10), moulding lump coal (11), center circular steel disc with holes (12), coal injection pipe (13), coal injection pipe tensimeter (14), coal injection pipe valve (15), band calibration circle cylindrical conduit (16), it is characterized in that: center circular steel disc with holes (12) seals with its surrounding after being fixed on cylinder barrel (2) bottom, coal injection pipe (13) is installed coal injection pipe tensimeter (14) and coal injection pipe valve (15) and is penetrated cylinder from cylinder rear end cap (3) centre and is welded on center circular steel disc with holes (12) hole inwall, insert in band calibration circle cylindrical conduit (16) coal injection pipe (13) other end, moulding lump coal (11) is evenly placed on hole cylinder shape steel disc (12) top and is subject to packed-piston (4) bottom-loaded, cylinder front end end cover (1) air intake opening is installed X-over and is connected air compressor (10) escape pipe, the moulding lump coal (11) of piston rod (5) top and piston bottom end is by the Centromedian cylindrical slotted hole conducting of piston rod (5), piston rod (5) top utilizes X-over to connect methane draft tube (7), draft tube is installed into tracheal pressure table (9) successively, draft tube valve (8), is finally connected with methane steel cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196120.9U CN203772842U (en) | 2014-04-16 | 2014-04-16 | Coal and gas outburst simulation device based on air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196120.9U CN203772842U (en) | 2014-04-16 | 2014-04-16 | Coal and gas outburst simulation device based on air cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772842U true CN203772842U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196120.9U Expired - Fee Related CN203772842U (en) | 2014-04-16 | 2014-04-16 | Coal and gas outburst simulation device based on air cylinder |
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| CN (1) | CN203772842U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407111A (en) * | 2014-12-12 | 2015-03-11 | 西安科技大学 | Physical similarity simulation method for gas-injection displacement coal seam gas |
| CN105891440A (en) * | 2016-04-11 | 2016-08-24 | 辽宁工程技术大学 | Coal and gas outburst testing device with supplemental gas source and method |
| CN107515289A (en) * | 2017-10-25 | 2017-12-26 | 辽宁工程技术大学 | A kind of coal and gas prominent simulation test device |
| CN109490482A (en) * | 2018-12-05 | 2019-03-19 | 重庆大学 | Device and method for simulating composite dynamic disaster in coal mine deep mining |
-
2014
- 2014-04-16 CN CN201420196120.9U patent/CN203772842U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407111A (en) * | 2014-12-12 | 2015-03-11 | 西安科技大学 | Physical similarity simulation method for gas-injection displacement coal seam gas |
| CN105891440A (en) * | 2016-04-11 | 2016-08-24 | 辽宁工程技术大学 | Coal and gas outburst testing device with supplemental gas source and method |
| CN105891440B (en) * | 2016-04-11 | 2017-12-01 | 辽宁工程技术大学 | A kind of coal and gas prominent experimental rig and method for having supply source of the gas |
| CN107515289A (en) * | 2017-10-25 | 2017-12-26 | 辽宁工程技术大学 | A kind of coal and gas prominent simulation test device |
| CN109490482A (en) * | 2018-12-05 | 2019-03-19 | 重庆大学 | Device and method for simulating composite dynamic disaster in coal mine deep mining |
| CN109490482B (en) * | 2018-12-05 | 2019-08-06 | 重庆大学 | Device and method for simulating composite dynamic disaster in coal mine deep mining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150416 |
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| EXPY | Termination of patent right or utility model |