CN105699248A - Improved gas emission speed measurement method and system - Google Patents
Improved gas emission speed measurement method and system Download PDFInfo
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- CN105699248A CN105699248A CN201610156316.9A CN201610156316A CN105699248A CN 105699248 A CN105699248 A CN 105699248A CN 201610156316 A CN201610156316 A CN 201610156316A CN 105699248 A CN105699248 A CN 105699248A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
- G01N7/18—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by allowing the material to react
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Abstract
The invention discloses an improved gas emission speed measurement method and system. A coal sample volatile component is used as the input parameter of a gas emission measurement instrument, and the experiment degassing time and the inflation time of the gas emission measurement instrument are determined according to the range of the input coal sample volatile component parameter; by means of the method, the degassing time and the adsorption time of the gas emission measurement instrument for an experiment coal sample can be changed according to different metamorphism degrees of coal; it is avoided that when gas emission initial speed measurement is conducted on the coal sample, because the degassing time and the adsorption time are not sufficient and gas adsorption of coal can not reach the saturated state, the measured gas emission initial speed is lower than the actual value; the experiment time can be saved for coal low in metamorphism degree, the precision of the gas emission initial speed measured through an experiment is ensured, and more precise prediction is made for coal and gas outburst.
Description
Technical field
Coal mine gas detection technique field of the present invention, the Methane Diffusion speed detecting method specifically improved and system。
Background technology
According to safety in production standard AQ1080 2009 " gas diffusion initial speed index (△ P) assay method of coal ", degassed and the adsorption time of experiment coal sample is 90min, but the gas adsorption equilibration time of different ranks of coal sample is different, the volatile matter of the more high then coal of the degree of metamorphism of coal sample is more low, the specific surface area of coal is more big, and coal sample is more big to the adsorbance of gas。The time of equilibrium adsorption of coal sample is more long, coal sample to the absorption of gas closer to saturation。In experimentation, if coal sample is inadequate to the time of equilibrium adsorption of gas, then coal sample does not reach saturation, and the gas diffusion initial speed value recorded just may be lower than actual value。
Data are analyzed by experiment, and when coal sample does not reach saturation, inflationtime is more long, and the gas diffusion initial speed of coal is more big。If but the degassed and inflation setting time of the experiment coal sample of increase gas diffusion initial speed analyzer, unnecessary experimental period is extended for the coal sample that degree of metamorphism is low。
Summary of the invention
It is an object of the invention to: provide Methane Diffusion speed detecting method and the system of a kind of improvement, it can be different according to the degree of metamorphism of coal, and change Methane Diffusion analyzer degassing time and adsorption time to testing coal sample, avoid when coal sample being carried out gas diffusion initial speed and measuring due to degassed and adsorption time is not enough, gas adsorption is not reached saturation by coal, cause the gas diffusion initial speed measured lower than actual value, the coal sample that degree of metamorphism is low can also be saved experimental period。
The present invention is achieved in that the Methane Diffusion speed detecting method of a kind of improvement, using the coal sample volatile matter input parameter as Methane Diffusion analyzer, and in the control system of Methane Diffusion analyzer, coal sample volatile matter is grouped according to its numerical range, set up coal sample volatile matter module, and module is set according to the degassed inflationtime that the foundation of coal sample volatile matter module is corresponding；After determining coal sample volatile matter, the concrete numerical value of coal sample volatile matter is inputted to Methane Diffusion analyzer, verify in the numerical range which coal sample volatile matter module this numerical value falls into, call degassed inflationtime corresponding to coal sample volatile matter module and module is set, and the degassing time tested with the state modulator of this module and inflationtime。
The degassing time that the degassed inflationtime of described same volatilization score value is arranged in module is identical with inflationtime。
The numerical range of setting up of described coal sample volatile matter module is 1) < 6%, 2) 6%-10%, 3) > 10%, < 15%, 4) >=15%；It is 1 that corresponding degassed inflationtime arranges module) 210min, 2) 180min, 3) 150min, 4) 90min。
Methane Diffusion speed measuring system, including main control module, main control module is connected with subscriber interface module, clock module, sensor signal input module, Data Processing in Experiment module, control signal output module respectively, and subscriber interface module and clock module all arrange module with degassed inflationtime and be connected。
Data Processing in Experiment module is connected to report print module。
Owing to have employed technique scheme, compared with prior art, the present invention is using the coal sample volatile matter input parameter as Methane Diffusion analyzer, the experiment degassing time of the Methane Diffusion analyzer that the coal sample volatile matter parameter area according to input is determined and inflationtime, such method can be different according to the degree of metamorphism of coal, and change Methane Diffusion analyzer degassing time and adsorption time to testing coal sample, avoid when coal sample being carried out gas diffusion initial speed and measuring due to degassed and adsorption time is not enough, gas adsorption is not reached saturation by coal, cause the gas diffusion initial speed measured lower than actual value, the coal sample that degree of metamorphism is low can also be saved experimental period, ensure the gas diffusion initial speed precision that experiment records, predict more accurately thus coal and gas prominent danger is made。Present invention also offers a set of corresponding system module, its system structure is simple, and with low cost, result of use is good。
Accompanying drawing explanation
Accompanying drawing 1 is the system frame structure schematic diagram of the present invention；
Accompanying drawing 2 is the use flow chart of the present invention。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as any limitation of the invention
Embodiments of the invention: the Methane Diffusion speed detecting method of a kind of improvement, coal sample volatile matter is grouped by the control system of Methane Diffusion analyzer according to its numerical range, set up coal sample volatile matter module, and module is set according to the degassed inflationtime that the foundation of coal sample volatile matter module is corresponding；Open Methane Diffusion speed determinator and control system, selection to be tested diffusion velocity or diffuse speed, the coal sample volatile matter of input experiment coal sample, the concrete numerical value of coal sample volatile matter is inputted to Methane Diffusion analyzer, verify in the numerical range which coal sample volatile matter module this numerical value falls into, call degassed inflationtime corresponding to coal sample volatile matter module and module is set, and the degassing time tested with the state modulator of this module and inflationtime；The degassing time that the degassed inflationtime of same volatilization score value is arranged in module is identical with inflationtime；The numerical range of setting up of coal sample volatile matter module is 1) < 6%, 2) 6%-10%, 3) > 10%, < 15%, 4) >=15%；It is 1 that corresponding degassed inflationtime arranges module) 210min, 2) 180min, 3) 150min, 4) 90min。
Methane Diffusion speed measuring system, its frame structure is as shown in Figure 1, including main control module 1, main control module 1 is connected with subscriber interface module 2, clock module 3, sensor signal input module 4, Data Processing in Experiment module 5, control signal output module 6 respectively, and subscriber interface module 2 and clock module 3 all arrange module 7 with degassed inflationtime and be connected；Data Processing in Experiment module 5 is connected to report print module 8。
In use, main control module 1 runs, and sends to subscriber interface module 2 and opens user interface instruction, and user is after user interface is configured, input coal sample volatilization score value also selects to start experiment, and subscriber interface module 1 arranges module 7 to degassed inflationtime and sends coal sample volatile matter data。Degassed inflationtime arranges module 7 and selects degassed inflationtime according to the volatile matter data received, then clock module 3 will be sent to the time, clock module 3 sends, to main control module 1, the instruction starting experiment and starts timing, and main control module 1 sends instruction to control signal output module 6 and carries out experimental implementation。
In experimentation, sensor signal input module 5 receives sensor signal and converts data to and be sent to main control module 1, and main control module 1 sends instructions to subscriber interface module 2 and is plotted on subscriber interface module 2 by experiment information；The each Step Time of experimentation is controlled by clock control module 3。
Hereinafter experiment flow being illustrated, after fresh coal sample reduction, screen out the coal sample (bituminous coal granularity is 0.25-0.5mm, and anthracite is 2-3mm) of certain particle size, weigh up coal sample, every part of 3.5g, moist coal sample is wanted naturally to dry, and removes the free moisture of coal。Screw off the fastening bolt of the coal sample bottle bottom of instrument, by coal sample load, in order to prevent degassed and inflation time coal dust fly into instrument internal, at one layer of absorbent cotton of coal sample upper cover；Load onto after coal sample bottle first with hand steered just, then screw fastening bolt。
Opening Methane Diffusion speed measuring system, selection to be tested diffusion velocity or diffuse speed, and the volatilization score value of input experiment coal sample, all processes is instrument and automatically carries out thereafter, it is not necessary to manual operation。
With reference to Fig. 2, for the experiment flow figure of the present invention, comprise the following steps:
Step 201, user needs to arrange coal sample volatile matter Vdaf in software, and sends the instruction starting experiment；
Step 202, inflation degassing time arranges module and judges that whether coal sample volatile matter Vdaf is less than 6%, is, forwards step 205 to and arranges that to inflate degassing time be 210min, otherwise forwards step 203 to；
Step 203, inflation degassing time arranges module and judges that whether coal sample volatile matter Vdaf is less than 10%, is, forwards step 206 to and arranges that to inflate degassing time be 180min, otherwise forwards step 204 to；
Step 204, inflation degassing time arranges module and judges that whether coal sample volatile matter Vdaf is less than 15%, is, forwarding step 207 to, to arrange inflation degassing time be 150min, otherwise forwards step 208 to and arranges that to inflate degassing time be 90min；
It is all degassed that step 209 carries out coal sample；
Step 210 all coal samples are inflated under 0.1Mpa pressure；
Fixed space (containing instrument pipeline) is carried out degassed by step 211
Current coal sample is discharged 1min to fixed space by step 212, and records flow；
Current coal sample data are calculated analyzing and storage by step 213；
Step 214 judges whether whole coal sample completes, and is, closes valve, storage experimental result, terminates experiment, otherwise forwards step 215 to and measures next coal sample, and step 215 forwards step 211 to and carries out next coal sample mensuration。
Claims (5)
1. the Methane Diffusion speed detecting method improved, it is characterized in that: using the coal sample volatile matter input parameter as Methane Diffusion analyzer, and in the control system of Methane Diffusion analyzer, coal sample volatile matter is grouped according to its numerical range, set up coal sample volatile matter module, and module is set according to the degassed inflationtime that the foundation of coal sample volatile matter module is corresponding；After determining coal sample volatile matter, the concrete numerical value of coal sample volatile matter is inputted to Methane Diffusion analyzer, verify in the numerical range which coal sample volatile matter module this numerical value falls into, call degassed inflationtime corresponding to coal sample volatile matter module and module is set, and the degassing time tested with the state modulator of this module and inflationtime。
2. the Methane Diffusion speed detecting method of improvement according to claim 1, it is characterised in that: the degassing time that the degassed inflationtime of described same volatilization score value is arranged in module is identical with inflationtime。
3. the Methane Diffusion speed detecting method of improvement according to claim 2, it is characterized in that: the numerical range of setting up of described coal sample volatile matter module is 1) < 6%, 2) 6%-10%, 3) > 10%, < 15%, 4) >=15%；It is 1 that corresponding degassed inflationtime arranges module) 210min, 2) 180min, 3) 150min, 4) 90min。
4. the Methane Diffusion speed measuring system adopting the method for claim 1, it is characterized in that: include main control module (1), main control module (1) is connected with subscriber interface module (2), clock module (3), sensor signal input module (4), Data Processing in Experiment module (5), control signal output module (6) respectively, and subscriber interface module (2) and clock module (3) all arrange module (7) and be connected with degassed inflationtime。
5. Methane Diffusion speed measuring system according to claim 1, it is characterised in that: in Data Processing in Experiment module (5), it is connected to report print module (8)。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107180A (en) * | 2017-12-28 | 2018-06-01 | 贵州大学 | A kind of height constant temperature gas diffusion initial speed and diffusion initial velocity sensing equipment |
Citations (3)
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| SU1666761A1 (en) * | 1989-03-10 | 1991-07-30 | Карагандинское отделение Восточного научно-исследовательского института по безопасности работ в горной промышленности | Method for outburst danger assessment |
| RU1795117C (en) * | 1990-05-07 | 1993-02-15 | Всесоюзный Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности | Method for monitoring and prevention of coal and gas outburst in driving workings through coal seams |
| CN204008632U (en) * | 2014-07-28 | 2014-12-10 | 华北科技学院 | A kind of coal seam gas-bearing capacity desorb matching register system |
-
2016
- 2016-03-20 CN CN201610156316.9A patent/CN105699248A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1666761A1 (en) * | 1989-03-10 | 1991-07-30 | Карагандинское отделение Восточного научно-исследовательского института по безопасности работ в горной промышленности | Method for outburst danger assessment |
| RU1795117C (en) * | 1990-05-07 | 1993-02-15 | Всесоюзный Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности | Method for monitoring and prevention of coal and gas outburst in driving workings through coal seams |
| CN204008632U (en) * | 2014-07-28 | 2014-12-10 | 华北科技学院 | A kind of coal seam gas-bearing capacity desorb matching register system |
Non-Patent Citations (1)
| Title |
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| 谭蓉晖 等: "吸附平衡时间对瓦斯放散初速度的影响", 《煤炭科学技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107180A (en) * | 2017-12-28 | 2018-06-01 | 贵州大学 | A kind of height constant temperature gas diffusion initial speed and diffusion initial velocity sensing equipment |
| CN108107180B (en) * | 2017-12-28 | 2024-05-07 | 贵州大学 | High low constant temperature gas diffusion initial velocity and diffusion initial velocity measuring equipment |
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