CN102607990A - Whole-range automatic testing method and device for gas desorbing speed of coal sample - Google Patents
Whole-range automatic testing method and device for gas desorbing speed of coal sample Download PDFInfo
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- CN102607990A CN102607990A CN2012100670305A CN201210067030A CN102607990A CN 102607990 A CN102607990 A CN 102607990A CN 2012100670305 A CN2012100670305 A CN 2012100670305A CN 201210067030 A CN201210067030 A CN 201210067030A CN 102607990 A CN102607990 A CN 102607990A
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Abstract
The invention relates to a whole-range automatic testing method and a whole-range automatic testing device for gas desorbing speed of a coal sample, which is reasonable in structure, simple and convenient for method, and accurate in measurement, and has visible data and imaging visualization. The device consists of a coal sample tank, a desorbing measuring pipe, a liquid collector and an intelligent module. The device is characterized in that the coal sample tank is connected with an air inlet pipe of the desorbing measuring pipe through a gas-guide tube; gas desorbed from the coal sample enters the desorbing measuring tube, so that liquid in the desorbing measuring tube is correspondingly discharged; the discharged liquid is collected by using the liquid collector; the mass variation in the liquid collector is monitored through an electronic scale in a whole-range manner, and the mass variation and time data are transmitted to the intelligent module and automatically recorded; and the mass variation is automatically converted to the volume variation according to a principle that m is equal to rho*v, namely the volume of the gas desorbed from the coal sample, so that the desorbing speed and the desorbing amount of the gas of the coal sample can be automatically obtained.
Description
Technical field
Method and apparatus of the present invention relates to coal-mine gas desorb field, be specifically related to simply, automatically, desorption of mash gas process whole-process automatic test accurately and record.
Background technology
Gas is the accompaniment in the coal-forming process; Just have gas occurs as long as cut coal; Gas is one of key factor of harm mine safety production, also is one of disaster the most serious in the colliery, is caused by gas more than 70% in the China's coal-mine industrial accident according to statistics.Therefore, no matter be mine main, New Built Mine or reorganization and expansion mine, all must grasp the gas bearing capacity and the regularity of distribution in the coal seam.Gas bearing capacity is the important foundation parameter of administering gas, also is the important foundation foundation of Forecast of Gas Emission, gas outbursts Prediction, clearly understands and is familiar with so must have coal seam gas-bearing capacity.
Coal seam gas-bearing capacity generally adopts the desorption of mash gas method to measure at present, and this method is taken back the laboratory desorb after the desorb of down-hole.Be to utilize coal sample jar samples of coal pulled, the gas that desorbs guided to the buret that liquid is housed, directly record coal sample desorption of mash gas amount according to gas volume reading in the buret through gas outlet; And every interval certain hour record buret reading; Continuous-reading 2h or longer time, measuring process need has the professional to measure and reading, and number reading method is the scale that reads on the corresponding buret of corresponding time; And make relative recording, in order to analyzing desorption of mash gas rule or inverse coal sample gas remaining quantity etc.This method is not only loaded down with trivial details, needs personnel many during experiment, and the limit sees that the time limit reads the scale on the buret; Not only cause temporal error; Also because of artificial former thereby cause reading error with scale, all have error if read at every turn, then the coal sample desorption of mash gas speed of mensuration and desorption quantity are with inaccurate; Be unfavorable for coal sampling desorption of mash gas rule, lose the reliable basis parameter instructing on-the-spot gas control; 2 hour or more, all by experimenter accomplished, then can waste plenty of time and energy at least by read and the recording process of data for while coal sample desorption of mash gas process.
Summary of the invention
The objective of the invention is to overcome the weak point in the existing technology, provide a kind of rational in infrastructure simple, method is easy, measures accurately, and data visualization becomes the figure visualize, coal sample desorption of mash gas speed whole-process automatic method of testing and device that result of use is good.
Technical scheme of the present invention:
A kind of coal sample desorption of mash gas speed whole-process automatic method of testing of the present invention and device, this device is made up of coal sample jar, desorb buret, liquid header and intelligent object.It is characterized in that: the coal sample jar is connected through the draft tube of wireway with the desorb buret; The gas that coal sample is separated sucking-off gets into the desorb buret, correspondingly discharges the liquid in the desorb buret, utilizes liquid header to collect the liquid of discharging; Through the mass change in the omnidistance monitoring liquid gatherer of electronic balance; And give intelligent object with the mass change data delivery, the quality in the automatic recording liquid gatherer of intelligent object is situation over time, automatically mass change is converted into volume change; Volume then is coal sample desorption of mash gas amount situation over time over time, thereby obtains coal sample desorption of mash gas speed and desorption quantity.
Described desorb buret bottom is a firm banking, and firm banking one end is a draft tube, and the other end is a discharging tube, and the center section of firm banking is a liquid inlet channel.When carrying out desorption experiment, earlier liquid is got in the buret through inlet, after installing closed cover is tightened, again the desorb buret is just put.
Described liquid header is that corresponding liquid of discharging was collected after the gas that coal sample is separated sucking-off was got into the desorb buret; It is characterized in that inwall is latticed ripple struction; The centre is provided with drainage plate, and liquid is drained into the bottom of gatherer, and what be connected with the liquid header below is electronic balance.Electronic balance sends the mass change of liquid header to intelligent object in interval time.
Described intelligent object is the mass change of automatic track record liquid header interval time; And according to m=ρ υ principle; The qualitative data of record is converted into volume data automatically; And, provide coal sample desorption of mash gas speed and desorption quantity with the visual curve map of the automatic generation of the corresponding relation of time and volume.
Coal sample desorption of mash gas speed whole-process automatic method of testing of the present invention:
A, liquid is installed in the desorb buret, put the normal solution pipette afterwards, connect each pipeline through fluid passage, valve-off, the debugging balance starts intelligent object.
B, be put into the coal sample jar, and be fixed on the holder, connect the air guide syringe needle in the coal sample for preparing; Open valve; The gas that coal sample is separated sucking-off gets in the desorption chamber of desorb buret through wireway, correspondingly discharges the liquid in the desorb buret, utilizes liquid header to collect the liquid of discharging.
C, electronic balance send the mass change of the liquid that liquid header is collected to intelligent object, and intelligent object is converted into volume change according to m=ρ υ principle with mass change automatically, i.e. the gas volume of coal sample desorb.
D, as required; Intelligent object can be set to write down different interval times a secondary data; According to the volume and the time relationship of coal sample desorption of mash gas, can whole-process automatic test and monitor the basic condition of desorption of mash gas, and obtain coal sample desorption of mash gas speed and desorption quantity automatically.
The invention has the beneficial effects as follows:
From the above mentioned; Apparatus of the present invention are to adopt whole-process automatic test and monitoring to carry out the desorption of mash gas of coal sample, collect the liquid of discharging in the coal sample desorb gas volume homographic solution pipette, the variation of all-the-way tracking liquid quality through liquid header; Again according to m=ρ υ principle; The liquid quality that changes is converted into the volume of this liquid, and the liquid volume that is transformed is the gas volume of coal sample desorb in the corresponding time, these transform and automatically record all carries out through intelligent object.Whole coal sample desorption process has been realized automatic test and monitoring; Do not need the experimenter to be sitting in preceding reading of instrument and record for a long time; Practiced thrift great amount of time and energy, also avoided the people to cause on the time and the error on the reading simultaneously for the reading that contrasts desorb buret scale interval time.
Thereby apparatus of the present invention overcome the weak point in the existing coal sample desorption of mash gas method, take test of coal sample desorption of mash gas whole-process automatic and monitoring method.This method is easy, and technology is reliable, and measuring accuracy is high, and method is prone to grasp, and data visualization becomes the figure visualize, and do not need the long tracking data collection of tester and whole-process automatic test and record; This apparatus structure is simple, processing ease, and working efficiency is high, and cost is low, and convenient test has extensive applicability and application value.
Description of drawings
Fig. 1 is the general structure synoptic diagram of apparatus of the present invention.Holder 1, standing screw 2, coal sample jar 3, coal sample cover 4, air guide syringe needle 5, air guide proofed sleeve 6, operation valve 7, connecting pipe 8, draft tube 9, firm banking 10, channel valve 11, passage 12, liquid 13, scale 14, desorption chamber 15, desorb buret 16, discharging tube 17, connecting pipe 18, mozzle 19, operation valve 20, flow-guiding mouth 21, fair water fin 22, liquid header 23, intelligent object 24, electronic balance 25, data line 26 are wherein arranged.
Embodiment
Referring to Fig. 1.Adopt coal sample desorption of mash gas automatic test approach of the present invention and device, practical implementation is divided under laboratory implementation and the coal mine to be implemented.
Embodiment 1: laboratory coal sample desorption of mash gas embodiment
(1) the liquid desorb buret 16 of packing into, put the normal solution pipette afterwards, connect air guide proofed sleeve 6, connect mozzle 19, closed control valve 7 and 20 connects data line 26, has debugged electronic balance 25, starts intelligent object 24.
(2) self-control coal sample, coal sample size are confirmed according to the research purpose, with the coal sample that the makes coal sample jar 3 of packing into, tighten coal sample cover 4 immediately, are fixed on coal sample jar 3 on the holder 1, with the pressure pad on air guide syringe needle 5 insertion coal sample cover tops.
(3) open operation valve 7 and 20 simultaneously, test of intelligent object 24 whole-process automatic and monitoring coal sample desorption of mash gas process.Automatic record, automatic mapping, data visualization becomes the figure visualize.
Embodiment 2: drill under the coal mine and get coal core desorption of mash gas embodiment:
(1) under coal mine, drills and get the place of looking for a relatively flat around the coal core position, put down device, the liquid desorb buret 16 of packing into; Put the normal solution pipette afterwards, connect air guide proofed sleeve 6, connect mozzle 19; Closed control valve 7 and 20; Connect data line 26, debugged electronic balance 25, start intelligent object 24.
(2) according to predetermined position, coal seam, drill and get the coal core, insert the coal sample jar, tighten the coal sample cover immediately, the air guide syringe needle is inserted the pressure pad on coal sample cover top, write down the coal sample exposure duration T1 before the coal sample desorb is measured simultaneously.
(3) open operation valve 7 and 20 simultaneously, test of intelligent object 24 whole-process automatic and monitoring coal sample desorption of mash gas process.
(4) the coal sample exposure duration T1 before the desorb of input coal sample is measured in the intelligent object 24 according to self registering data, can calculate desorption of mash gas speed and down-hole desorption quantity.
Claims (5)
1. coal sample desorption of mash gas speed whole-process automatic method of testing and device, it is made up of coal sample jar (2), desorb buret (16), liquid header (23) and intelligent object (24).
2. method and apparatus according to claim 1; The bottom of described desorb buret (16) is firm banking (10); Firm banking (10) one ends are draft tube (9), and the other end is discharging tube (17), and the center section of firm banking (10) is liquid inlet channel (12).
3. method and apparatus according to claim 1; Described liquid header (23) is the gas that coal sample is separated sucking-off to be got into the corresponding liquid of discharging in desorb buret (16) back collect; It is characterized in that described liquid header (23) inwall is latticed ripple struction; The centre is provided with drainage plate (22), and liquid is drained into the bottom of gatherer, and what be connected with the liquid header below is electronic balance (25).
4. method and apparatus according to claim 1; Described intelligent object (24) is the mass change of automatic track record liquid header interval time (23); And according to m=ρ υ principle; The qualitative data of record is converted into volume data automatically, and the corresponding relation of time and volume is generated visual curve map automatically, provide coal sample desorption of mash gas speed and desorption quantity.
5. method and apparatus according to claim 1; It is characterized in that: coal sample jar (3) is connected with the draft tube (9) of desorb buret (16) through wireway (6); The liquid that desorb buret (16) is discharged is discharged into liquid header (23) lining through discharging tube (17); Liquid header (23) passes through the mass change of (23) in the omnidistance monitoring liquid gatherer of electronic balance (25), and gives intelligent object (24) with the mass change data delivery, and the quality of automatic recording liquid gatherer (23) lining of intelligent object (24) is situation over time; Automatically mass change is converted into volume change, volume then is coal sample desorption of mash gas amount situation over time over time.
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| CN201210067030.5A CN102607990B (en) | 2012-03-05 | 2012-03-05 | A kind of whole-process automatic test device of coal sample desorption of mash gas speed |
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| CN102607990B CN102607990B (en) | 2016-06-01 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841192A (en) * | 2012-09-25 | 2012-12-26 | 成都理工大学 | Desorption analysis experimental facility of coal rock |
| CN103728349A (en) * | 2014-01-16 | 2014-04-16 | 河南理工大学 | Entire automatic testing method and device for gas desorption speed of resistance-type coal sample |
| CN103776713A (en) * | 2014-01-09 | 2014-05-07 | 中国石油天然气股份有限公司 | Gas desorption rate testing device for dense rock |
| WO2015103758A1 (en) * | 2014-01-09 | 2015-07-16 | 中国石油天然气股份有限公司 | Apparatus for testing dense rock gas desorption rate |
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105588929A (en) * | 2016-03-20 | 2016-05-18 | 贵州大学 | Water bath constant-temperature methane diffusion determination system |
| CN105606480A (en) * | 2015-09-22 | 2016-05-25 | 中煤科工集团重庆研究院有限公司 | Automatic change direct survey device of coal seam desorption gas content |
| CN105973337A (en) * | 2016-06-06 | 2016-09-28 | 中国石油天然气股份有限公司 | Experimental device and experimental method for metering and drying sampling of gas product |
| CN107727531A (en) * | 2017-11-02 | 2018-02-23 | 河南理工大学 | Coal seam gas-bearing capacity laboratory desorption quantity calibrates reading plotter and its application method automatically |
| CN108896436A (en) * | 2018-07-18 | 2018-11-27 | 中煤科工集团重庆研究院有限公司 | Methane normal pressure adsorption capacity measurement system of coal |
| CN109085087A (en) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | Full-automatic device and method for quickly measuring gas desorption index and drilling cuttings amount of drilling cuttings |
| CN109883878A (en) * | 2019-03-05 | 2019-06-14 | 重庆大学 | A kind of water bath with thermostatic control fire damp desorption measurement device and its measuring method |
| CN110508218A (en) * | 2019-08-16 | 2019-11-29 | 中国地质科学院水文地质环境地质研究所 | The measurement method of Zero-valent Iron hydrodynamic seepage pressure hydrogen producing amount and precipitation capacity |
| CN112414893A (en) * | 2020-10-21 | 2021-02-26 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
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| US5741959A (en) * | 1996-08-09 | 1998-04-21 | The United States Of America As Represented By The United States Department Of Energy | Portable tester for determining gas content within a core sample |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841192B (en) * | 2012-09-25 | 2014-10-29 | 成都理工大学 | Desorption analysis experimental facility of coal rock |
| CN102841192A (en) * | 2012-09-25 | 2012-12-26 | 成都理工大学 | Desorption analysis experimental facility of coal rock |
| CN105637340A (en) * | 2014-01-09 | 2016-06-01 | 中国石油天然气股份有限公司 | Gas analysis rate testing device for dense rock |
| CN103776713A (en) * | 2014-01-09 | 2014-05-07 | 中国石油天然气股份有限公司 | Gas desorption rate testing device for dense rock |
| WO2015103758A1 (en) * | 2014-01-09 | 2015-07-16 | 中国石油天然气股份有限公司 | Apparatus for testing dense rock gas desorption rate |
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| CN103728349A (en) * | 2014-01-16 | 2014-04-16 | 河南理工大学 | Entire automatic testing method and device for gas desorption speed of resistance-type coal sample |
| CN105203176A (en) * | 2014-06-11 | 2015-12-30 | 孟尧 | Novel fluid-discharge method gas amount metering device |
| CN105606480A (en) * | 2015-09-22 | 2016-05-25 | 中煤科工集团重庆研究院有限公司 | Automatic change direct survey device of coal seam desorption gas content |
| CN105606480B (en) * | 2015-09-22 | 2018-10-02 | 中煤科工集团重庆研究院有限公司 | Automatic change direct survey device of coal seam desorption gas content |
| CN105588929A (en) * | 2016-03-20 | 2016-05-18 | 贵州大学 | Water bath constant-temperature methane diffusion determination system |
| CN105973337A (en) * | 2016-06-06 | 2016-09-28 | 中国石油天然气股份有限公司 | Experimental device and experimental method for metering and drying sampling of gas product |
| CN105973337B (en) * | 2016-06-06 | 2018-11-16 | 中国石油天然气股份有限公司 | Experimental device and experimental method for metering and drying sampling of gas product |
| CN107727531A (en) * | 2017-11-02 | 2018-02-23 | 河南理工大学 | Coal seam gas-bearing capacity laboratory desorption quantity calibrates reading plotter and its application method automatically |
| CN108896436A (en) * | 2018-07-18 | 2018-11-27 | 中煤科工集团重庆研究院有限公司 | Methane normal pressure adsorption capacity measurement system of coal |
| CN109085087A (en) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | Full-automatic device and method for quickly measuring gas desorption index and drilling cuttings amount of drilling cuttings |
| CN109085087B (en) * | 2018-08-17 | 2021-03-23 | 中煤科工集团重庆研究院有限公司 | Full-automatic device and method for quickly measuring gas desorption index and drilling cuttings amount of drilling cuttings |
| CN109883878A (en) * | 2019-03-05 | 2019-06-14 | 重庆大学 | A kind of water bath with thermostatic control fire damp desorption measurement device and its measuring method |
| CN110508218A (en) * | 2019-08-16 | 2019-11-29 | 中国地质科学院水文地质环境地质研究所 | The measurement method of Zero-valent Iron hydrodynamic seepage pressure hydrogen producing amount and precipitation capacity |
| CN112414893A (en) * | 2020-10-21 | 2021-02-26 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
| CN112414893B (en) * | 2020-10-21 | 2023-10-24 | 河南理工大学 | Portable gas desorption instrument for underground coal mine and testing method thereof |
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