CN111579583A - Infrared thermal imaging device for testing coal adsorbed gas - Google Patents
Infrared thermal imaging device for testing coal adsorbed gas Download PDFInfo
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- CN111579583A CN111579583A CN202010436787.1A CN202010436787A CN111579583A CN 111579583 A CN111579583 A CN 111579583A CN 202010436787 A CN202010436787 A CN 202010436787A CN 111579583 A CN111579583 A CN 111579583A
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- infrared thermal
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- 239000003245 coal Substances 0.000 title claims abstract description 40
- 238000001931 thermography Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 16
- 241001330002 Bambuseae Species 0.000 claims abstract description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 16
- 239000011425 bamboo Substances 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/405—Concentrating samples by adsorption or absorption
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to an infrared thermal imaging device for testing coal adsorbed gas. The method mainly solves the technical problem that the gas enrichment area in a small-scale space within a meter level is difficult to predict in the existing geophysical gas exploration method. The technical scheme of the invention is as follows: it includes infrared thermal imaging appearance, a withstand voltage section of thick bamboo, passes through infrared glass window piece, base, adjustable holder, digital manometer, vacuum pump, relief pressure valve, control valve, gas bomb and sieve mesh form heat insulating gasket, infrared thermal imaging appearance dress is on one side of base, the another side at the base is adorned to adjustable holder, withstand voltage section of thick bamboo dress is in the centre gripping hole that adjustable holder upper end set up, sieve mesh form heat insulating gasket dress is in a withstand voltage section of thick bamboo, pass through infrared glass window piece dress in the window that withstand voltage section of thick bamboo front end set up, the one end of relief pressure valve is connected with the gas port of withstand voltage section of thick bamboo rear end, and the other end is connected with the gas bomb gas outlet, the one end of control valve is connected with the gas port of withstand voltage section of thick bamboo rear end, and.
Description
Technical Field
The invention relates to an infrared thermal imaging device for testing coal adsorbed gas, and belongs to the technical field of precision testing analytical instruments.
Background
Coal is a natural porous medium, and due to a long and complex coal formation process, the coal rock, coal quality and pore fracture structures of a coal body have remarkable non-uniform characteristics, so that methane and CO in the coal are enabled to be contained2The spatial distribution form of the enrichment area of the isogas has obvious multi-scale nonuniformity. The multi-scale enrichment characteristic of gas in the coal is an important task for promoting the transparentization of the gas in the coal bed, and is used for extracting the gas and CO in the coal bed2The method has important significance in accurate and efficient implementation and effect prediction of displacement enhanced methane extraction and other projects.
The geophysical gas exploration method is an important means for exploring the gas space distribution form in coal at present, but the technical means is focused on a large-scale area, and the fine depicting degree of a small-scale space within a meter level is far from shortage. With the continuous improvement of the requirement of accurate in-situ modified extraction of coal bed gas, the refinement requirement on the prediction of a small-scale space gas enrichment area is more and more urgent, and the quantitative prediction reflecting the essential relationship is an inevitable trend. Through retrieval, the related invention of the special visual testing instrument for the small-scale space enrichment area at present is blank, which brings serious obstruction to the accurate prediction of the gas space enrichment and distribution form in coal.
Disclosure of Invention
The invention aims to solve the technical problem that a gas enrichment area in a small-scale space within a meter level is difficult to predict in the existing geophysical gas exploration method, and provides an infrared thermal imaging device for testing coal adsorbed gas.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a test coal adsorbed gas's infrared thermal imaging device, its includes infrared thermal imager, a withstand voltage section of thick bamboo, passes through infrared glass window piece, base, adjustable holder, digital manometer, vacuum pump, relief pressure valve, control valve, gas bomb and sieve mesh form heat insulating gasket, infrared thermal imager adorns on one side of base, adjustable holder dress is on the other side of base, withstand voltage section of thick bamboo dress is in the centre gripping hole that adjustable holder upper end set up, sieve mesh form heat insulating gasket dress is in withstand voltage section of thick bamboo, pass through infrared glass window piece dress in the window that withstand voltage section of thick bamboo front end set up, pass through the sealed gas tightness in the test process of guarantee withstand voltage section of thick bamboo by the polymer rubber circle between infrared glass window piece and the withstand voltage section of thick bamboo, the one end of relief pressure valve is passed through the pipeline and is connected with the gas port that withstand voltage section of thick bamboo rear end set up, and the other end, one end of the control valve is connected with an air port arranged at the rear end of the pressure-resistant cylinder through a pipeline, the other end of the control valve is connected with the vacuum pump through a pipeline, and the digital pressure gauge is arranged on the pipeline connecting the pressure reducing valve and the air port of the pressure-resistant cylinder.
Further, the inner diameter of the pressure-resistant cylinder is 22 mm; the inner wall of the pressure-resistant cylinder is provided with a heat-insulating coating; the pressure-resistant cylinder is required to ensure good air tightness under the pressure of less than 5 MPa.
Further, the infrared transmittance of the infrared-transmitting glazing sheet is not less than 90%.
Further, the thermal conductivity coefficient of the sieve-hole-shaped heat insulation gasket is not more than 0.3W/(m.K), and the total area of the plug holes is not less than 30% of the sectional area of the gasket.
Furthermore, the material of the heat insulation coating is high silica fiber, and the heat conductivity coefficient of the heat insulation coating is not more than 0.3W/(m.K).
The invention has the beneficial effects that:
the invention adopts the infrared thermal imaging technical means, and can carry out the measurement of methane and CO in the slice coal sample2The spatial distribution form of the equal gas enrichment area is visually tested, which is beneficial to realizing the accurate evaluation of the gas enrichment characteristic in the coal in a meter scale. The method solves the technical problem that the gas enrichment area in the small-scale space within the meter level is difficult to predict in the existing geophysical gas exploration method. Compared with the background technology, the device has the advantages of simple structure, easy operation and high test precision.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram showing the enrichment and distribution pattern of gas space in coal obtained by the test of the present invention.
In the figure: 1-infrared thermal imaging instrument; 2-a pressure-resistant cylinder; 3-infrared transmitting glazing; 4-a base; 5-an adjustable holder; 6-digital pressure gauge; 7-a vacuum pump; 8-a pressure reducing valve; 9-a control valve; 10-gas storage cylinder; 11-mesh-shaped heat insulation gaskets; 12-coal sample; 13-gas space enrichment and spreading form in the anthracite coal bed of No. 15 coal bed of Yangquan temple house; 14-Jincheng Zhazhuang No. 3 coal seam anthracite coal gas space enrichment and spreading shape; the gas space in the 15-Xishan coal Tunlan No. 8 coal layer coke coal is enriched and spread.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the infrared thermal imaging apparatus for testing coal-adsorbed gas in this embodiment includes an infrared thermal imaging instrument 1, a pressure-resistant cylinder 2, an infrared-transparent glass window 3, a base 4, an adjustable clamper 5, a digital pressure gauge 6, a vacuum pump 7, a pressure-reducing valve 8, a control valve 9, a gas cylinder 10, and a mesh-shaped heat-insulating gasket 11, wherein the infrared thermal imaging instrument 1 is installed on one side of the base 4, the adjustable clamper 5 is installed on the other side of the base 4, the pressure-resistant cylinder 2 is installed in a clamping hole formed at the upper end of the adjustable clamper 5, the mesh-shaped heat-insulating gasket 11 is installed in the pressure-resistant cylinder 2, the infrared-transparent glass window 3 is installed in a window formed at the front end of the pressure-resistant cylinder 2, a polymer rubber ring is sealed between the infrared-transparent glass window 3 and the pressure-resistant cylinder 2 to ensure the gas tightness of the pressure-resistant cylinder 2 during testing, one end of the pressure-reducing valve 8 is connected to a gas port formed at the, the other end is connected with the gas outlet of the gas storage bottle 10 through a pipeline, one end of the control valve is connected with a gas port arranged at the rear end 2 of the pressure-resistant cylinder through a pipeline, the other end of the control valve is connected with a vacuum pump 7 through a pipeline, and the digital pressure gauge 6 is arranged on the pipeline connected with the gas port of the pressure-resistant cylinder 2 through a pressure reducing valve 8.
The inner diameter of the pressure-resistant cylinder 2 is 22 mm; the inner wall of the pressure-resistant cylinder 2 is provided with a heat-insulating coating; the pressure-resistant cylinder 2 is required to ensure good air tightness under the pressure of less than 5 MPa.
The infrared transmittance of the infrared-transmitting glass pane 3 is not less than 90%.
The heat conductivity coefficient of the sieve-hole-shaped heat insulation gasket 11 is not more than 0.3W/(m.K), and the total area of the plug holes is not less than 30% of the sectional area of the gasket.
The material of the heat insulation coating is high silica fiber, and the heat conductivity coefficient of the heat insulation coating is not more than 0.3W/(m.K).
The test process of the invention is as follows:
firstly, a coal sample 12 is arranged at the front end of an inner cavity of a pressure-resistant cylinder 2 and is positioned between an infrared-transmitting glass window sheet 3 and a sieve mesh-shaped heat-insulating gasket 11, and an adjustable clamp 5 is adjusted to ensure that the pressure-resistant cylinder 2 and an infrared thermal imager 1 are positioned in the same plane; then starting a vacuum pump 7 and a control valve 9 to carry out vacuum treatment on the coal sample 12 in the pressure-resistant cylinder 2, and carrying out infrared thermal imaging shooting on the coal sample in a vacuum state; and then closing the control valve 9, opening the pressure reducing valve 8, injecting methane gas at the pressure of 1.2MPa, and simultaneously shooting the coal surface temperature field in real time at intervals of 2s by using the infrared thermal imager 1. And finally, sequentially subtracting the infrared thermal imaging reconstruction matrix in the process of gas adsorption of the coal sample from the infrared thermal imaging reconstruction matrix in the coal sample vacuum state to obtain a spatial distribution morphological diagram of a methane enrichment area in the coal, as shown in fig. 2.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art should understand that they can make local changes or modifications within the scope of the present invention without departing from the technical features of the present invention.
Claims (5)
1. The utility model provides a test coal adsorbed gas's infrared thermal imaging device which characterized in that: comprises an infrared thermal imager (1), a pressure-resistant cylinder (2), an infrared-transmitting glass window sheet (3), a base (4), an adjustable clamp holder (5), a digital pressure gauge (6), a vacuum pump (7), a pressure reducing valve (8), a control valve (9), an air storage bottle (10) and a sieve mesh-shaped heat-insulating gasket (11), wherein the infrared thermal imager (1) is arranged on one side of the base (4), the adjustable clamp holder (5) is arranged on the other side of the base (4), the pressure-resistant cylinder (2) is arranged in a clamping hole arranged at the upper end of the adjustable clamp holder (5), the sieve mesh-shaped heat-insulating gasket (11) is arranged in the pressure-resistant cylinder (2), the infrared-transmitting glass window sheet (3) is arranged in a window arranged at the front end of the pressure-resistant cylinder (2), the space between the infrared-transmitting glass window sheet (3) and the pressure-resistant cylinder (2) is sealed by a high polymer rubber ring to ensure the air tightness of the pressure-resistant cylinder (2, the one end of relief pressure valve (8) is passed through the pipeline and is connected with the gas port that withstand voltage section of thick bamboo (2) rear end set up, and the other end passes through the pipeline and is connected with the gas bomb gas outlet, and the one end of control valve (9) is passed through the pipeline and is connected with the gas port that withstand voltage section of thick bamboo (2) rear end set up, and the other end passes through the pipeline and is connected with vacuum pump (7), digital pressure table (6) dress is on the pipeline that relief pressure valve (8) and withstand voltage section of thick bamboo (2) gas port are.
2. The infrared thermal imaging device for testing the adsorbed gas of coal as claimed in claim 1, wherein: the inner diameter of the pressure-resistant cylinder (2) is 22 mm; the inner wall of the pressure-resistant cylinder (2) is provided with a heat-insulating coating; the pressure-resistant cylinder (2) is required to ensure good air tightness under the pressure of less than 5 MPa.
3. The infrared thermal imaging device for testing the adsorbed gas of coal as claimed in claim 1, wherein: the infrared transmittance of the infrared-transmitting glass window piece (3) is not lower than 90%.
4. The infrared thermal imaging device for testing the adsorbed gas of coal as claimed in claim 1, wherein: the heat conductivity coefficient of the sieve-hole-shaped heat insulation gasket (11) is not more than 0.3W/(m.K), and the total area of the plug holes is not less than 30% of the sectional area of the gasket.
5. The infrared thermal imaging device for testing the adsorbed gas of coal as claimed in claim 2, wherein: the material of the heat insulation coating is high silica fiber, and the heat conductivity coefficient of the heat insulation coating is not more than 0.3W/(m.K).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436787.1A CN111579583A (en) | 2020-05-21 | 2020-05-21 | Infrared thermal imaging device for testing coal adsorbed gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436787.1A CN111579583A (en) | 2020-05-21 | 2020-05-21 | Infrared thermal imaging device for testing coal adsorbed gas |
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| Publication Number | Publication Date |
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| CN111579583A true CN111579583A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010436787.1A Pending CN111579583A (en) | 2020-05-21 | 2020-05-21 | Infrared thermal imaging device for testing coal adsorbed gas |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001337060A (en) * | 2000-05-30 | 2001-12-07 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for testing burning of pulverized coal |
| CN205384199U (en) * | 2016-03-09 | 2016-07-13 | 万军凤 | Desorption experimental apparatus is adsorbed to coal bed gas |
| CN205593876U (en) * | 2016-05-09 | 2016-09-21 | 华北科技学院 | Coal column gas adsorbs many parameter testing of desorption system |
| CN107782622A (en) * | 2017-10-24 | 2018-03-09 | 中国矿业大学 | Stress gas coupling coal body damages infra-red radiation test device and method |
| CN208366936U (en) * | 2018-01-30 | 2019-01-11 | 河南理工大学 | Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas |
| CN109540733A (en) * | 2019-01-10 | 2019-03-29 | 中国矿业大学(北京) | Changes of heat flux experimental apparatus for testing and method during a kind of coal adsorption-desorption gas |
-
2020
- 2020-05-21 CN CN202010436787.1A patent/CN111579583A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001337060A (en) * | 2000-05-30 | 2001-12-07 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for testing burning of pulverized coal |
| CN205384199U (en) * | 2016-03-09 | 2016-07-13 | 万军凤 | Desorption experimental apparatus is adsorbed to coal bed gas |
| CN205593876U (en) * | 2016-05-09 | 2016-09-21 | 华北科技学院 | Coal column gas adsorbs many parameter testing of desorption system |
| CN107782622A (en) * | 2017-10-24 | 2018-03-09 | 中国矿业大学 | Stress gas coupling coal body damages infra-red radiation test device and method |
| CN208366936U (en) * | 2018-01-30 | 2019-01-11 | 河南理工大学 | Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas |
| CN109540733A (en) * | 2019-01-10 | 2019-03-29 | 中国矿业大学(北京) | Changes of heat flux experimental apparatus for testing and method during a kind of coal adsorption-desorption gas |
Non-Patent Citations (1)
| Title |
|---|
| 张超等: "基于插值计算和红外观测的煤样吸附/解吸实验研究", 《煤矿安全》 * |
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Application publication date: 20200825 |