CN205246645U - Experimental test system of unusual desorption of gas in coal sample destructive process - Google Patents
Experimental test system of unusual desorption of gas in coal sample destructive process Download PDFInfo
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- CN205246645U CN205246645U CN201521060540.5U CN201521060540U CN205246645U CN 205246645 U CN205246645 U CN 205246645U CN 201521060540 U CN201521060540 U CN 201521060540U CN 205246645 U CN205246645 U CN 205246645U
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Abstract
Experimental test system of unusual desorption of gas in coal sample destructive process is including transmission, reducing mechanism, air pressure device, gas desorption measuring device and electrically controlled device, transmission includes speed regulator and driving motor, the reducing mechanism includes the coal sample jar impeller inside with being located the coal sample jar, air pressure device includes barometer, tee bend valve and stop valve, gas desorption measuring device includes the gaseous mass flow meter of a plurality of different ranges, electrically controlled device and gas desorption measuring device are connected. The utility model discloses a become the coal granule of different granularities with coal sample reduction, simulation coal and gas outburst in -process is to the pulverization process of coal body to measure gas desorption volume and the desorption speed of coal sample under different granularities, the unusual desorption rule of gas of experimental study coal and gas outburst in -process provides theoretical foundation for the improvement of coal mine gas calamity.
Description
Technical field
The utility model belongs to desorption of mash gas simulation test device technical field, relates in particular to the test system of the abnormal desorb of gas in a kind of coal sample destructive process.
Background technology
Coal and Gas Outburst be by crustal stress, gas pressure, Coal Pore Structure comprehensive function, the mine gas dynamic phenomenon of serious threat Safety of Coal Mine Production. In coal and Gas Outburst, coal body crack propagation, be stripped from fragmentation and throw to digging space. The research of the inherent mechanism to Gas Outburst development is control coal and Gas Outburst based theoretical. The desorption of mash gas rule of coal can reflect coal and gas outburst risk, and the factor that affects the desorption of mash gas characteristic of coal mainly contains coal body adsorption gas performance, coal body adsorption gas pressure, and coal body destroys type and granularity, coal body moisture and temperature etc.
Few about the experimental rig of the abnormal desorption properties of gas in research coal body destructive process at present, domestic published patent documentation CN201210288691.0 discloses the device and method of the remaining gas parameter of Fast Measurement getting working face under a kind of coal mine; Published patent documentation CN201420315408.3 discloses the experimental rig of the full coal seam with gas of a kind of rotation disturbance, this covering device adopts the full coal seam with gas of rotation mode disturbance, observe gas pressure under outer force-disturbance and change, but can not be used for studying the impact on coal gas desorb under different grain size condition.
Utility model content
The utility model is in order to solve weak point of the prior art, provide a kind of test operation easy, coal sample can be ground into different grain size, measure the test system of the abnormal desorb of gas in the coal sample destructive process of the desorption of mash gas amount of coal sample under different grain size and desorption rate.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the test system of the abnormal desorb of gas in coal sample destructive process, comprises transmission device, reducing mechanism, pneumatic shuttle, desorption of mash gas measurement mechanism and electric control gear; Transmission device comprises speed regulator and drive motors, and speed regulator is connected with drive motors, and drive motors main shaft is provided with driving pulley; Reducing mechanism comprises coal sample tank and is positioned at the impeller of coal sample tank inside, coal sample pot bottom is provided with holder, in holder, be inserted with rotating shaft, rotating shaft top is positioned at coal sample tank inside, rotating shaft bottom is positioned at coal sample tank outside, and rotating shaft top is connected by key with impeller, and rotating shaft bottom is arranged with driven pulley, driven pulley is connected by key with rotating shaft, between driving pulley and driven pulley, is connected by belt transmission; Pneumatic shuttle comprises air gauge, three-way valve and stop valve, and three ports of three-way valve are connected with air gauge, coal sample tank and stop valve by wireway respectively; Desorption of mash gas measurement mechanism comprises some mass-flow gas meters that are connected in parallel, and the range of each mass-flow gas meter is different, and desorption of mash gas measurement mechanism is communicated with stop valve by wireway; Electric control gear is connected with desorption of mash gas measurement mechanism.
Desorption of mash gas measurement mechanism comprises 5 mass-flow gas meters, and the range of mass-flow gas meter is respectively: 0-100ml/min, 0-200ml/min, 0-500ml/min, 0-1000ml/min, 0-5000ml/min.
Electric control gear adopts computer or single-chip microcomputer or PLC or integrated circuit.
Junction between rotating shaft and holder is provided with sealing ring.
The utlity model has following advantage:
1, the utility model comprises transmission device, reducing mechanism, pneumatic shuttle, desorption of mash gas measurement mechanism and electric control gear, it is simple in structure, can measure desorption of mash gas amount and desorption rate under different grain size, block coal sample is broken into varigrained coal particle by reducing mechanism, the efflorescence process of coal in simulation coal and Gas Outburst, coal sample tank is closed structure, in coal sample tank, between impeller lower end and holder, be provided with sealing ring, guarantee the sealing of coal sample tank, speed regulator in transmission device can change the rotating speed of drive motors, make drive motors respectively in the slow-speed of revolution, under medium speed and high rotating speed, coal sample is pulverized for different grain size, efflorescence process to coal body in simulation coal and Gas Outburst, measure desorption of mash gas amount and desorption of mash gas speed by desorption of mash gas measurement mechanism, pneumatic shuttle can be monitored the gas pressure showing in coal sample tank, thereby in Study on Coal and Gas Outburst, coal body is pulverized as the abnormal adsorption law of the gas under different-grain diameter condition.
2, desorption of mash gas measurement mechanism of the present utility model comprises the mass-flow gas meter that adopts 5 different ranges, small-range is for monitoring the situation that desorption of mash gas amount is little, wide range is for monitoring the situation that desorption of mash gas amount is large, it is convenient to measure, and cooperation electric control gear, can show in real time desorption of mash gas flow and desorption of mash gas speed, according to the variation of gas flow, testing crew can select suitable range to monitor, can realize automatic collection and the preservation of data, data acquisition is accurately quick, avoid manually reading existing error, improve the accuracy rate of test, save data processing time, be convenient to scientific research personnel and analyze better experimental result.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the test system of the abnormal desorb of gas in coal sample destructive process of the present utility model, comprises transmission device, reducing mechanism, pneumatic shuttle, desorption of mash gas measurement mechanism and electric control gear 14; Transmission device comprises speed regulator 1 and drive motors 2, and speed regulator 1 is connected with drive motors 2, and drive motors 2 main shafts are provided with driving pulley 3; Reducing mechanism comprises coal sample tank 4 and is positioned at the impeller 5 of coal sample tank 4 inside, coal sample tank 4 bottoms are provided with holder 6, in holder 6, be inserted with rotating shaft 7, rotating shaft 7 tops are positioned at coal sample tank 4 inside, rotating shaft 7 bottoms are positioned at coal sample tank 4 outsides, and rotating shaft 7 tops are connected by key with impeller 5, and rotating shaft 7 bottoms are arranged with driven pulley 8, driven pulley 8 is connected by key with rotating shaft 7, between driving pulley 3 and driven pulley 8, is in transmission connection by belt 9; Pneumatic shuttle comprises air gauge 10, three-way valve 11 and stop valve 12, and three ports of three-way valve 11 are connected with air gauge 10, coal sample tank 4 and stop valve 12 by wireway 15 respectively; The mass-flow gas meter 13 that desorption of mash gas measurement mechanism 16 comprises some (preferably 5) is connected in parallel, the range of each mass-flow gas meter 13 is different, and desorption of mash gas measurement mechanism 16 is communicated with stop valve 12 by wireway 15; Electric control gear 14 is connected with desorption of mash gas measurement mechanism 16.
Desorption of mash gas measurement mechanism 16 comprises 5 mass-flow gas meters 13, the range of mass-flow gas meter 13 is respectively: 0-100ml/min(ml/min), 0-200ml/min, 0-500ml/min, 0-1000ml/min, 0-5000ml/min, the desorption of mash gas amount that testing crew can monitor by electric control gear 14, selects the mass-flow gas meter 13 of suitable range to monitor.
Electric control gear 14 adopts computer or single-chip microcomputer or PLC or integrated circuit, and computer, single-chip microcomputer, PLC and integrated circuit are prior art, and concrete structure and operation principle are no longer described.
Junction between rotating shaft 7 and holder 6 is provided with sealing ring, guarantees the sealing of coal sample tank 4, and sealing ring is prior art, not shown in the figures.
The test method of the test system of the abnormal desorb of gas in coal sample destructive process, comprises the following steps successively:
(1) before test, prepare
On down-hole mining working face, drill through the fresh coal sample of some bulks, after rapidly got block coal sample tightly being encapsulated, deliver to ground experiment chamber;
(2) assembling experimental rig and air-tightness detect
Taking quantitative block coal sample puts on the impeller 5 of coal sample tank 4, driven pulley 8 and driving pulley 3 are in transmission connection by belt 9, by coal sample tank 4, Pressure gauge, stop valve 12 is communicated with three ports of three-way valve 11 by wireway 15 respectively, stop valve 12 is communicated with desorption of mash gas measurement mechanism 16 by wireway 15, electric control gear 14 is connected with desorption of mash gas measurement mechanism 16, detect the air-tightness of experimental rig, guarantee coal sample tank 4, three-way valve 11, stop valve 12, between desorption of mash gas measurement mechanism 16 and connection said apparatus, the air-tightness of wireway 15 is good, air tight, then close stop valve 12, open three-way valve 11, observe the variation of air gauge 10, and carry out respective record,
(3) desorption of mash gas test
Open stop valve 12, start desorption experiment, start electric control gear 14 simultaneously, Real-Time Monitoring also records desorption of mash gas data, in the time that the reading of air gauge 10 is zero, start drive motors 2, regulate speed regulator 1, make the rotating speed of drive motors 2 between 500-1000r/min(rev/min) between (as 800r/min), driving pulley 3 drives driven pulley 8 to rotate by belt 9 transmissions, thereby impeller 5 is rotated, block coal sample in coal sample tank 4 is ground into the coal cinder that granularity is less, first testing crew control electric control gear 14 chooses the mass-flow gas meter 13 of 0-5000ml/min range, after electric control gear 14 monitors desorption of mash gas amount, according to the desorption of mash gas amount monitoring, control electric control gear 14 and select the mass-flow gas meter 13 of suitable range, in desorption of mash gas process of the test, electric control gear 14 is recorded desorption of mash gas amount and desorption of mash gas speed, until no longer include desorption of mash gas in coal sample out, gas is discharged in air by wireway 15 after mass-flow gas meter 13,
(4) change coal sample
Coal sample after interior coal sample tank 4 pulverizing is cleaned out, repeated above-mentioned (2)-(3) step, in (3) step, regulate speed regulator 1, make the rotating speed of drive motors 2 (as 1500r/min) between 1000-2000r/min; After (3) EOS, again the coal sample after interior coal sample tank 4 pulverizing is cleaned out, repeat above-mentioned (2)-(3) step, in (3) step, regulate speed regulator 1, make the rotating speed of drive motors 2 (as 2500r/min) between 1000-2000r/min;
(5) off-test disposal data
Derive desorption of mash gas test data, the contrast drive motors 2 desorption of mash gas amount in 500-1000r/min, 1000-2000r/min and the 2000-3000r/min range of speeds and desorption of mash gas speed respectively, the gas abnormal adsorption law of analysis and research coal sample in shattering process.
The main experimental function that the experimental rig that the utility model provides can be realized has:
(1) the on-the-spot desorption of mash gas rule test of coal body drilling cuttings;
(2) the abnormal adsorption law test of gas in coal body shattering process;
(3) the abnormal rule test of the gas pressure in coal body shattering process.
The test method of the test system of the abnormal desorb of gas in coal sample destructive process of the present utility model, adopt reducing mechanism to pulverize coal sample, and by the speed regulator in adjusting transmission device, make drive motors respectively in the slow-speed of revolution, under medium speed and high rotating speed, coal sample is pulverized for different grain size, efflorescence process to coal body in simulation coal and Gas Outburst, thereby obtain desorption of mash gas amount and desorption of mash gas speed under various different rotating speeds (comprising zero rotating speed) condition, in Study on Coal and Gas Outburst, coal body is by under efflorescence condition, (rotating speed is higher, coal sample is less by the particle diameter after pulverizing) the abnormal adsorption law of gas, thereby instruct corresponding colliery engineering practice, take to prevent more targetedly and safeguard procedures, significant for Safety of Coal Mine Production.
Claims (3)
1. the test system of the abnormal desorb of gas in coal sample destructive process, is characterized in that: comprise transmission device, reducing mechanism, pneumatic shuttle, desorption of mash gas measurement mechanism and electric control gear; Transmission device comprises speed regulator and drive motors, and speed regulator is connected with drive motors, and drive motors main shaft is provided with driving pulley; Reducing mechanism comprises coal sample tank and is positioned at the impeller of coal sample tank inside, coal sample pot bottom is provided with holder, in holder, be inserted with rotating shaft, rotating shaft top is positioned at coal sample tank inside, rotating shaft bottom is positioned at coal sample tank outside, and rotating shaft top is connected by key with impeller, and rotating shaft bottom is arranged with driven pulley, driven pulley is connected by key with rotating shaft, between driving pulley and driven pulley, is connected by belt transmission; Pneumatic shuttle comprises air gauge, three-way valve and stop valve, and three ports of three-way valve are connected with air gauge, coal sample tank and stop valve by wireway respectively; Desorption of mash gas measurement mechanism comprises some mass-flow gas meters that are connected in parallel, and the range of each mass-flow gas meter is different, and desorption of mash gas measurement mechanism is communicated with stop valve by wireway; Electric control gear is connected with desorption of mash gas measurement mechanism.
2. the test system of the abnormal desorb of gas in coal sample destructive process according to claim 1, it is characterized in that: desorption of mash gas measurement mechanism comprises 5 mass-flow gas meters, and the range of mass-flow gas meter is respectively: 0-100ml/min, 0-200ml/min, 0-500ml/min, 0-1000ml/min, 0-5000ml/min.
3. the test system of the abnormal desorb of gas in coal sample destructive process according to claim 1 and 2, is characterized in that: electric control gear adopts computer or single-chip microcomputer or PLC or integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521060540.5U CN205246645U (en) | 2015-12-18 | 2015-12-18 | Experimental test system of unusual desorption of gas in coal sample destructive process |
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| CN201521060540.5U CN205246645U (en) | 2015-12-18 | 2015-12-18 | Experimental test system of unusual desorption of gas in coal sample destructive process |
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| CN201521060540.5U Withdrawn - After Issue CN205246645U (en) | 2015-12-18 | 2015-12-18 | Experimental test system of unusual desorption of gas in coal sample destructive process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424905A (en) * | 2015-12-18 | 2016-03-23 | 河南理工大学 | Gas abnormity desorption characteristic test device and method in coal body destruction process |
| CN109374866A (en) * | 2018-12-12 | 2019-02-22 | 西安科技大学 | A kind of automatic gas bearing capacity measurement device |
| CN110726641A (en) * | 2019-11-06 | 2020-01-24 | 河南理工大学 | Coal sample gas desorption amount measuring device and measuring method |
| CN111612258A (en) * | 2020-05-26 | 2020-09-01 | 中煤科工集团重庆研究院有限公司 | Method for judging and identifying gas abnormality by using gas desorption quantity characteristics |
-
2015
- 2015-12-18 CN CN201521060540.5U patent/CN205246645U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424905A (en) * | 2015-12-18 | 2016-03-23 | 河南理工大学 | Gas abnormity desorption characteristic test device and method in coal body destruction process |
| CN105424905B (en) * | 2015-12-18 | 2017-05-03 | 河南理工大学 | Gas abnormity desorption characteristic test device and method in coal body destruction process |
| CN109374866A (en) * | 2018-12-12 | 2019-02-22 | 西安科技大学 | A kind of automatic gas bearing capacity measurement device |
| CN110726641A (en) * | 2019-11-06 | 2020-01-24 | 河南理工大学 | Coal sample gas desorption amount measuring device and measuring method |
| CN111612258A (en) * | 2020-05-26 | 2020-09-01 | 中煤科工集团重庆研究院有限公司 | Method for judging and identifying gas abnormality by using gas desorption quantity characteristics |
| CN111612258B (en) * | 2020-05-26 | 2023-04-07 | 中煤科工集团重庆研究院有限公司 | Method for judging and identifying gas abnormality by using gas desorption quantity characteristics |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20170503 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20170503 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |