CN2206956Y - Coal sample initial release gas energy measuring device - Google Patents
Coal sample initial release gas energy measuring device Download PDFInfo
- Publication number
- CN2206956Y CN2206956Y CN 94242173 CN94242173U CN2206956Y CN 2206956 Y CN2206956 Y CN 2206956Y CN 94242173 CN94242173 CN 94242173 CN 94242173 U CN94242173 U CN 94242173U CN 2206956 Y CN2206956 Y CN 2206956Y
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- coal sample
- gas
- coal
- initial release
- energy
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- 239000003245 coal Substances 0.000 title claims abstract description 56
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract 1
- 238000004088 simulation Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000003708 ampul Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a survey device for measuring initial release gas energy of coal sample, it comprises mechanical part and control circuit two parts. The mechanical part comprises a coal sample tank, a reducing nozzle with a ball valve, three pressure sensors and temperature sensors with different measuring ranges and the like. The control circuit part is connected with a data acquisition circuit board inserted in the microcomputer and a programmable six-path PIO interface board. The measuring range is wide, the dynamic performance is good, the accuracy is high, and the measuring result faithfully reflects the change rule of the gas energy and the gas expansion energy which are emitted from the coal body when the external pressure of the coal body containing the gas is suddenly changed. Through the test of 46 outstanding simulation experiment coal samples, the results show that: the measuring result of the device can be accurately used for predicting the dynamic phenomenon during rock cross-cut coal uncovering.
Description
The utility model relate to a kind of measure the coal containing methane gas body external condition change suddenly initial release gas that the back discharges in by coal body can determinator, the utility model belongs to colliery hazard prediction technical field.
As everyone knows, coal body is a kind of porous medium, in the environment of high pressure gas is arranged, coal body will adsorb a part of methane gas, and the weight of coal body increases, and when ambient pressure environment reduces, adsorption gas in the coal body can desorb again, and the weight on the coal body can reduce again.Outstanding many suddenly special once employings of scholar B.B. of USSR (Union of Soviet Socialist Republics) research gas place airtight absorption ampoule with quartz spring balance and coal sample, after in ampoule, charging into gas and making it adsorption equilibrium, throw open the valve that joins with ampoule, along with the fast desorption of gas, the weight of quartzy scale indication changes.Write down that weight can obtain a time dependent curve of desorption of mash gas amount over time on the quartzy scale.China's Fushun coal is ground institute and Chongqing coal and is ground institute and also carried out similarly testing.In the last few years, the technology of this respect was not made progress.
B.B. many suddenly special absorption ampoules are used to measure milder coal body desorb gas process and are fine, and are used for the mensuration of coal body fast desorption gas process, and then error is bigger.At first, the valve on the absorption ampoule can't be opened fast, and the second, quartz spring balance can't indicate the variation of coal sample weight fast, and therefore, this device can't be measured the data variation in initial several seconds.And show that according to up-to-date outstanding theoretical study results the gas energy of gushing out initial exactly several seconds has crucial effects to outstanding process.The purpose of this utility model be exactly to produce a kind of initial release gas of gushing out in the coal containing methane gas body can measure ambient pressure and change suddenly the time can determinator, can be able to isolate the expansion energy in initial released gas that wherein possesses the acting ability by the initial release gas of measuring, the needs of dynamic phenomenon prediction when adapting to stone door punching coal in the colliery by calculating.
The utility model is made up of two parts.Mechanical part mainly is made up of the convergent spout of coal sample jar and band valve, and its material available metal is made, and sees shown in Figure 1.Loam cake at the coal sample jar is furnished with a high pressure sensor and a temperature sensor, also has two pipelines that communicate with middle pressure sensor and micro-pressure sensor respectively.For pressure sensor in preventing and micro-pressure sensor are destroyed by overload, and be connected to stop valve and solenoid valve on the pipeline that middle pressure sensor and micro-pressure sensor link to each other.Mechanical part is whole to place adjustable isoperibol.
Circuit part is seen shown in Figure 2.PT0 is a high pressure sensor among the figure, and PT1 is middle pressure sensor, and PT2 is a micro-pressure sensor, and TT is a temperature sensor.These sensors respectively with the A/D plate on A0, A1, A2, the A3 passage joins.Owing to link up with the coal sample jar respectively when middle pressure sensor and micro-pressure sensor need drop to proper range in the gas pressure in the coal sample jar, be connected on solenoid valve DCF0 between coal sample jar and middle pressure sensor and the micro-pressure sensor and DCF1 all by relay J 0, J1 and the B mouth that drives amplifying circuit MC1413 and six tunnel PIO interface plates able to programme couple together.In Fig. 2, what be connected with the A mouth of six tunnel PIO interface plates able to programme is the slot type coupling mechanism, and its effect mainly is the log-on data gatherer process simultaneously when opening of the ball valve on the convergent spout.PIO plate and A/D plate all are plugged in the system extension groove of microcomputer.
During mensuration, fast with the valve of ball valve turning on 90 ° the position, the gas air-flow in the coal sample jar will be gushed out from the convergent spout rapidly, valve drives the barrier flaps start on the slot type coupling apparatus when opening, the startup computing machine begins image data.The workflow diagram of mensuration process is seen shown in Figure 3.During beginning, computing machine will collect the high pressure sensor signal and compare with the startup value d1 of solenoid valve DCF0 while gathering high pressure sensor signal and temperature signal, when the force value of high pressure sensor drops to d1, send signal by the PIO circuit board, driving amplifying circuit MC1413 connects relay J 0, solenoid valve DCF0 opens, and computing machine begins to gather high pressure, middle pressure and temperature signal.Equally, in gatherer process, computing machine constantly compares the startup value d2 of middle pressure signal and solenoid valve DCF1, in case middle pressure signal drops to below the d2, the PIO circuit board sends signal, drive amplifying circuit MC1413 relay J 1 is connected, solenoid valve DCF1 opens, and computing machine begins to gather high pressure, middle pressure, low pressure and temperature signal.When the low-voltage signal value drops to cutoff d3, whole mensuration end-of-job.
In the utility model, adopted special ball valve on the convergent valve, the ratio A very little (A=0.16) of the latus rectum of ball valve and sphere diameter, thereby, when valve turning in 90 ° the process, it is very short to begin to flow to the used time of whole unlatchings from air-flow, and the valve opening process does not influence the snap-out release of methane gas in the coal sample.In addition, since adopted the different high precision of three measurement ranges (＜0.5%FS), the pressure signal in the pressure transducer coupled computer samples of coal pulled jar of dynamic property good (response time is 0.0002～0.002 second), the pressure limit that records wide (from several handkerchiefs to several MPas), reflected methane gas variation of pressure the dispose procedure in coal sample faithfully, measurement result relatively accurately, reliably.
The accompanying drawing that the utility model is submitted to describes below:
Fig. 1 is an initial release gas energy determinator, and it tests coal sample (2), screen pack (3) by steel coal sample jar (1), pressure measurement and temperature probe (4), steel convergent spout (5), copper ball valve (6), inflation inlet (7), the steel valve is (8), and signal acquisition circuit (9) is formed.
Fig. 2 is the circuit diagram of signal acquisition circuit (9).
Fig. 3 is the data collection task process flow diagram.
In use, respond well, measurement result is stable, reliable, has measured the expansion energy in initial released gas index of 46 coal samples at present.And confirm, no matter outstanding coal sample also is non-outstanding coal sample, when ambient pressure reduces suddenly, the gas initially gushed out in the coal sample can and the gas expansion energy a significant energy peak is all arranged, and unit weight to have initial release gas energy and the expansion energy in initial released gas gushed out in the coal sample of outburst danger all much bigger than no outburst danger coal sample.
Claims (3)
1, a kind of determinator that is used to measure coal sample initial release gas energy, it is characterized in that this device is by coal sample jar (1), the convergent spout (5) of dribbling valve, pressure transducer, temperature sensor, solenoid valve, slot type coupling apparatus and the data acquisition control system that links to each other with robot calculator constitute, after coal sample (2) the adsorption gas balance in the coal sample jar (1), the valve of opening ball valve (6) fast is (8), gas in the coal sample (2) in the coal sample jar (1) will enter atmosphere by screen pack (3) and convergent spout (5) fast, and pressure transducer on the coal sample jar (1) and temperature sensor (4) are just noted the stagnation pressure and the stagnation temperature of the interior gas air-flow of coal sample jar (1) by data acquisition control system.Handle by data processor, can calculate initial release gas energy and expansion energy in initial released gas curve by the unit weight coal sample of gushing out in the coal sample in the coal sample jar.
2, coal sample initial release gas energy determinator according to claim 1, it is characterized in that being equipped with on the coal sample jar (1) three pressure transducers that range is different, temperature sensor and solenoid valve can determine when gas pressure changes in the coal sample jar by initial release gas energy and the expansion energy in initial released gas gushed out in the coal sample.
3, coal sample initial release gas according to claim 1 can determinator, it is characterized in that data acquisition control system is made up of hardware and software, hardware system by data acquisition board, six tunnel PIO interface plates able to programme, drive amplifying circuit and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242173 CN2206956Y (en) | 1994-06-29 | 1994-06-29 | Coal sample initial release gas energy measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242173 CN2206956Y (en) | 1994-06-29 | 1994-06-29 | Coal sample initial release gas energy measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2206956Y true CN2206956Y (en) | 1995-09-06 |
Family
ID=33848813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94242173 Expired - Fee Related CN2206956Y (en) | 1994-06-29 | 1994-06-29 | Coal sample initial release gas energy measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2206956Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245706B (en) * | 2007-07-03 | 2010-08-11 | 中国矿业大学(北京) | Three-dimensional simulated experiment bench for coal and mash gas co-extraction |
| CN102128765A (en) * | 2010-12-09 | 2011-07-20 | 中国矿业大学 | Method for directly and rapidly measuring coal seam gas content in underground coal mine |
| CN101482027B (en) * | 2009-02-06 | 2011-07-27 | 煤炭科学研究总院重庆研究院 | Fast pressure-releasing coal sample room of coal and gas burst test |
| CN101551377B (en) * | 2009-05-08 | 2012-08-29 | 煤炭科学研究总院重庆研究院 | Rapid determination method of coal seam gas content |
| CN102879290A (en) * | 2012-09-25 | 2013-01-16 | 成都理工大学 | Coal rock desorption testing method |
| CN103161499A (en) * | 2013-01-21 | 2013-06-19 | 中国矿业大学 | Division method for underground coal bed outburst and dangerous zones |
| CN103206996A (en) * | 2013-04-18 | 2013-07-17 | 河南理工大学 | Pore wall gas flow measuring device and pore wall gas flow measuring method |
| CN103995094A (en) * | 2014-06-14 | 2014-08-20 | 开滦(集团)有限责任公司技术中心 | Experiment device of rotatably disturbing coal body rich in gas |
| CN104359610A (en) * | 2014-11-03 | 2015-02-18 | 南车资阳机车有限公司 | PCB (printed circuit board) micro-pressure sensor isolation box |
| CN105352846A (en) * | 2015-12-03 | 2016-02-24 | 中国矿业大学 | Testing device and method for tectonic coal desorption gas energy distribution curve |
| CN109781583A (en) * | 2019-02-21 | 2019-05-21 | 长江大学 | A kind of detection device and method of viscous crude starting pressure |
-
1994
- 1994-06-29 CN CN 94242173 patent/CN2206956Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245706B (en) * | 2007-07-03 | 2010-08-11 | 中国矿业大学(北京) | Three-dimensional simulated experiment bench for coal and mash gas co-extraction |
| CN101482027B (en) * | 2009-02-06 | 2011-07-27 | 煤炭科学研究总院重庆研究院 | Fast pressure-releasing coal sample room of coal and gas burst test |
| CN101551377B (en) * | 2009-05-08 | 2012-08-29 | 煤炭科学研究总院重庆研究院 | Rapid determination method of coal seam gas content |
| CN102128765A (en) * | 2010-12-09 | 2011-07-20 | 中国矿业大学 | Method for directly and rapidly measuring coal seam gas content in underground coal mine |
| CN102879290B (en) * | 2012-09-25 | 2014-10-29 | 成都理工大学 | Coal rock desorption testing method |
| CN102879290A (en) * | 2012-09-25 | 2013-01-16 | 成都理工大学 | Coal rock desorption testing method |
| CN103161499A (en) * | 2013-01-21 | 2013-06-19 | 中国矿业大学 | Division method for underground coal bed outburst and dangerous zones |
| CN103206996A (en) * | 2013-04-18 | 2013-07-17 | 河南理工大学 | Pore wall gas flow measuring device and pore wall gas flow measuring method |
| CN103206996B (en) * | 2013-04-18 | 2015-04-01 | 河南理工大学 | Pore wall gas flow measuring device and pore wall gas flow measuring method |
| CN103995094A (en) * | 2014-06-14 | 2014-08-20 | 开滦(集团)有限责任公司技术中心 | Experiment device of rotatably disturbing coal body rich in gas |
| CN104359610A (en) * | 2014-11-03 | 2015-02-18 | 南车资阳机车有限公司 | PCB (printed circuit board) micro-pressure sensor isolation box |
| CN105352846A (en) * | 2015-12-03 | 2016-02-24 | 中国矿业大学 | Testing device and method for tectonic coal desorption gas energy distribution curve |
| CN109781583A (en) * | 2019-02-21 | 2019-05-21 | 长江大学 | A kind of detection device and method of viscous crude starting pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |