CN203786110U - Measurement device of coal seam methane content - Google Patents
Measurement device of coal seam methane content Download PDFInfo
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- CN203786110U CN203786110U CN201420123323.5U CN201420123323U CN203786110U CN 203786110 U CN203786110 U CN 203786110U CN 201420123323 U CN201420123323 U CN 201420123323U CN 203786110 U CN203786110 U CN 203786110U
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- graduated cylinder
- gas
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- measuring
- gas outlet
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- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 title claims abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- 239000000725 suspension Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000003795 desorption Methods 0.000 abstract description 35
- 238000013461 design Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract 7
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a measurement device of coal seam methane content. The measurement device of the coal seam methane content comprises measuring cylinders, a mineral sample tank and a gas exhaust pipe, wherein a main body part of each of the measuring cylinders is divided into two measuring cylinder cavities and two sub measuring cylinders, which are used for bearing water or measured target gases, from the central axis, wherein the two sub measuring cylinders are connected from head to tail side by side; the mineral sample tank is an enclosed container for storing collected mineral samples containing gases; the gas exhaust pipe is used for connecting the mineral sample tank and the measuring cylinders. A dual-measuring-cylinder design scheme is adopted for the device disclosed by the utility model, and when one measuring cylinder cavity or a sub measuring cylinder is in full range, the other measuring cylinder cavity or sub measuring cylinder can be switched within short time without interrupting the gas desorption; then the measuring cylinder cavity or sub measuring cylinder in full range is supplied with water for alternative use, thereby getting rid of the limitation to the measuring cylinder range by the measuring gas content, and thus the accuracy of the measurement gas content is improved.
Description
Technical field
The utility model relates to a kind of measurement mechanism for coal seam gas-bearing capacity.
Background technology
In coal seam, colliery, methane gas content is Design of Mine Ventilation, the requisite parameter of formulation Firedamp precaution measures.At present, coal seam gas-bearing capacity is measured the main desorption method that adopts, and also claims " direct method ".Its measuring method is to utilize coal bed drilling to gather primitive coalbed coal core, with desorption of mash gas speed measuring instrumentation, in down-hole, directly measure its coal seams gas discharging quantity and adsorption law, according to its adsorption law, calculate that coal sample is from starting to gather the loss gas amount measuring to desorb, residual gas amount in experimental determination coal sample, and this three parts gas amount sum of gas amount that down-hole is measured is coal seam gas-bearing capacity.The accuracy that fire damp desorption quantity and adsorption law are measured has determined the accuracy of coal seam gas-bearing capacity measurement result.The methane gas content measurement device that main flow is used at present has two kinds: FHJ-2 type desorption of mash gas velocity determination instrument and FHJ-5 type desorption of mash gas velocity determination instrument.
The problem of 1.FHJ-2 type desorption of mash gas velocity determination instrument structure and existence.As shown in Figure 1, FHJ-2 type desorption of mash gas velocity determination instrument comprises graduated cylinder 1, tank 2, air-breathing ball 4, gas outlet 9, sample ore tank 11 etc.Its principle is draining water gathering of gas law: the in-built full water of graduated cylinder 1 during use, the coal sample obtaining is connected with graduated cylinder 1 by gas outlet 9 after packing ore deposit tank 11 into, in coal sample, the gas of desorb enters graduated cylinder 1 by gas outlet 9, and the water in graduated cylinder 1 is discharged in tank 2, the volume of discharging water, is the gas volume entering in graduated cylinder 1, if after the water in graduated cylinder 1 discharges completely, the air-breathing ball 4 of pinching can make the water in tank 2 get back to rapidly in graduated cylinder 1, proceeds the work of coal sample desorption of mash gas mensuration.In this apparatus structure, be furnished with a tank 2 and air-breathing ball 4, complex structure, volume is large, carries inconvenience.
2. use at present the problem of FHJ-5 type desorption of mash gas velocity determination instrument structure and existence.As shown in Figure 2, FHJ-5 type desorption of mash gas velocity determination instrument composition is mainly comprised of graduated cylinder 2, gas outlet 5, sample ore tank 7 etc.Compare with FHJ-2 desorption of mash gas velocity determination instrument, the gas in FHJ-5 type desorption of mash gas velocity determination instrument sample ore tank 7 enters in graduated cylinder 2 through gas outlet 5, and the water of discharge is flowed out by freeing port 1.Owing to having simplified tank and air-breathing ball, FHJ-5 type desorption of mash gas velocity determination instrument volume is little, lightweight, be easy to carry, but also existent defect: if coal sample gas bearing capacity is larger, when desorption of mash gas amount surpasses graduated cylinder 2 ranges (as 800ml), need to clamp gas outlet 5 with spring clamp 3 and interrupt the methane gas desorb of colliery sample, need to desorption instrument graduated cylinder, again fill water with the long period, because everyone operating habit is different with process hold-up time, make the rule of coal sample desorb gas be subject to human intervention, measurement result is brought to certain error.
Therefore, be necessary to design new desorption of mash gas velocity determination instrument, substitute the desorption of mash gas velocity determination instrument using at present, improve the accuracy of coal seam gas-bearing capacity measurement result.
Utility model content
In order to overcome the defect of prior art, the utility model provides the desorption of mash gas analyzer of a kind of pair of graduated cylinder design.
The utility model discloses a kind of measurement mechanism for coal seam gas-bearing capacity, comprising: graduated cylinder, sample ore tank, gas outlet.The main part of described graduated cylinder is divided equally from axis to be two graduated cylinder chambeies or to be comprised of two sub-graduated cylinders, is used for carrying water or the object gas of surveying; Two sub-graduated cylinders are from beginning to end side by side.Described sample ore tank is a closed container, for storing the mineral samplers that contains gas of adopting; Described gas outlet, for connecting sample ore tank and graduated cylinder, is that gas enters the passage of graduated cylinder from sample ore tank.
Preferably, described graduated cylinder comprises two bottom plugs, opens described bottom plug and is used to graduated cylinder water filling, closes the water filling port of described bottom plug sealing graduated cylinder; With two air intake openings, be arranged in the outside of the described water filling port end of graduated cylinder main body, on air intake opening, be furnished with draft tube, for connecting from the next gas outlet of sample ore tank; With two freeing port, be arranged in graduated cylinder main body both sides, adjoin with described air intake opening.
Preferably, the sub-graduated cylinder of described graduated cylinder is from beginning to end side by side, and water filling port is separately opened on respectively graduated cylinder two ends, rather than same one end, and the scale of described sub-graduated cylinder indicates opposite direction.
Preferably, described device also comprises connection assist, and described connection assist comprises: suspension ring, piercing needle, spring clamp.Described suspension ring, are arranged in the other end bottom contrary with described water filling port, in order to hang fixedly graduated cylinder.Described piercing needle, for connecting gas outlet and sample ore tank.Described spring clamp, is placed on described gas outlet, is used for blocking gas outlet temporarily.
Preferably, any make of described graduated cylinder in organic glass, plastics, transparent resin material.
The utility model device adopts two graduated cylinder designs, combines the advantage of FHJ-2 type and the velocity determination of FHJ-5 type desorption of mash gas.It is two graduated cylinder chambeies or with two sub-graduated cylinders side by side and composition from beginning to end that the main part of its graduated cylinder is divided equally from axis, therein when graduated cylinder chamber or sub-graduated cylinder full scale (as 400ml), can be switched to another graduated cylinder chamber or sub-graduated cylinder within a short period of time, can not interrupt gas desorption, then give graduated cylinder chamber or the sub-graduated cylinder moisturizing of aforementioned full scale, the two can be used alternatingly, make the volume of eudiometry break away from the restriction to graduated cylinder range, simultaneously at instrument quality, volume increases in little situation, desorption of mash gas rule is measured does not interrupt, improved the accuracy of calculating coal-bed gas desorption quantity.
Accompanying drawing explanation
Shown in Fig. 1 is FHJ-2 type desorption of mash gas velocity determination instrument structural drawing.
Shown in Fig. 2 is FHJ-5 type desorption of mash gas velocity determination instrument structural drawing.
Shown in Fig. 3 is the desorption of mash gas velocity determination instrument structural drawing in a kind of embodiment of the utility model.
Each parts correspondence markings in Fig. 1: air-breathing ball 5 thermometer 6, the 8 spring clamp 7 drainpipe 9 gas outlet 10 piercing needle 11 sample ore tanks of 1 graduated cylinder 2 tank 3 screw clamp 4
Each parts correspondence markings in Fig. 2: 1 freeing port 2 graduated cylinder 3 spring clamp 4 bottom plug 5 gas outlet 6 piercing needle 7 sample ore tank 8 suspension ring
Each parts correspondence markings: 1-1 first suspension ring 1-2 second suspension ring 2-1 first sub-graduated cylinder 3-1 first row of sub-graduated cylinder 2-2 second mouth of a river 3-2 second row mouth of a river 4-1 first air intake opening 4-2 second air intake opening 5-1 first bottom plug 5-2 second bottom plug 6 spring clamp 7 piercing needle 8 sample ore tank 9 gas outlets in Fig. 3
Embodiment
The structural drawing of desorption of mash gas velocity determination instrument in a kind of specific embodiments of the utility model as shown in Figure 3.Described analyzer comprises suspension ring 1, graduated cylinder, freeing port 3, air intake opening 4, bottom plug 5, spring clamp 6, piercing needle 7, gas outlet 9, sample ore tank 8.
The main part of described graduated cylinder is from axis, to divide equally to be two graduated cylinder chambeies or to adopt two sub-graduated cylinders to form side by side, is used for being filled with water or object gas.For simplicity, below the unified first sub-graduated cylinder 2-1 of employing, the second sub-graduated cylinder 2-2 describe.The first sub-graduated cylinder 2-1 is furnished with suspension ring 1-1, freeing port 3-1, air intake opening 4-1, bottom plug 5-1, and the second sub-graduated cylinder 2-2 is furnished with suspension ring 1-2, freeing port 3-2, air intake opening 4-2, bottom plug 5-2.
Graduated cylinder chamber is cylindrical, on the wall of chamber, has scale value.In the present embodiment, the first sub-graduated cylinder 2-1, the second sub-graduated cylinder 2-2 of described graduated cylinder are from beginning to end side by side, one end of the installation bottom plug 5-1 of the first sub-graduated cylinder 2-1 is connected side by side with one end of the suspension ring 1-2 of the second sub-graduated cylinder 2-2, and one end of the installation bottom plug 5-2 of the second sub-graduated cylinder 2-2 is connected side by side with one end of the suspension ring 1-1 of the first sub-graduated cylinder 2-1.Bottom plug 5-1,5-2 are arranged on the water filling port of sub-graduated cylinder, and opening bottom plug is graduated cylinder water filling, closes the water filling port that bottom plug seals sub-graduated cylinder.Because sub-graduated cylinder is from beginning to end side by side, so the water filling port of sub-graduated cylinder is opened on respectively graduated cylinder two ends, rather than same one end.
The sub-graduated cylinder of described graduated cylinder is furnished with respectively suspension ring 1-1,1-2, and suspension ring 1-1,1-2 are arranged in the other end bottom contrary with described water filling port, in order to hang fixedly graduated cylinder.Because the opposite direction of water filling, so the scale on two sub-graduated cylinder chamber walls of described graduated cylinder indicates opposite direction.Maximum scale, for example, be 400ml in the present embodiment, is positioned at the one end at water filling port place, for reading the bulking value of required test gas.
Described graduated cylinder is also provided with two air intake opening 4-1,4-2, is arranged in the outside of the described water filling port end of sub-graduated cylinder, on air intake opening 4-1,4-2, is furnished with draft tube, for connecting from the gas outlet of sample ore tank 8; The shape approximation of the present embodiment draft tube is a reaping hook shape, and as shown in Figure 3, being conducive to gas enters graduated cylinder on the one hand, and anti-sealing flows backwards out from graduated cylinder on the other hand.
Described graduated cylinder also disposes two freeing port 3-1,3-2, is arranged in graduated cylinder both sides, adjoins with described air intake opening 4-1,4-2.Freeing port 3-1 be positioned at air intake opening 4-1 above, freeing port 3-2 be positioned at air intake opening 4-2 below, try one's best near the lower limb in water filling port end outside in the position of air intake opening 4 and freeing port 3, the position of water delivering orifice 3 is the highest can not surpass scale mark, otherwise will affect eudiometry.The size of air intake opening 4 and freeing port 3 can not be too large in addition, utilizes the tension force of water and atmospheric pressure can prevent that the water in graduated cylinder from can not flow backwards out.
Sample ore tank 8 is closed containers, for storing the mineral samplers that contains gas of adopting.
Described gas outlet 9, for connecting sample ore tank 8 and graduated cylinder, is that gas enters the passage of graduated cylinder from sample ore tank 8.
Described desorption of mash gas velocity determination instrument also comprises that some connection assists are as spring clamp 6 and piercing needle 7; Described spring clamp 6, is placed on described gas outlet, is used for blocking gas outlet temporarily.Described piercing needle 7, for connecting gas outlet and sample ore tank 8.
The utility model adopts two graduated cylinder designs, combine the advantage of FHJ-2 type and the velocity determination of FHJ-5 type desorption of mash gas, when desorption of mash gas amount reaches graduated cylinder full scale (400ml), can switch the graduated cylinder being connected with sample ore tank within a short period of time, can not interrupt coal sample desorb gas, reduce the time of human intervention, improved the accuracy of calculating coal sample gas loss amount and calculating coal seam gas-bearing capacity.
While using this gas content measurement mechanism, open bottom plug 5-1 and 5-2, be respectively sub-graduated cylinder 2-1 and 2-2 and fill water, close the water filling port of described bottom plug 5 sealing graduated cylinders.The draft tube that the sample ore of digging (as colliery) packs on the air intake opening 4-1 of the rear elder generation of sample ore tank 8 and the first sub-graduated cylinder 2-1 is connected, methane gas enters the first sub-graduated cylinder 2-1, water in the first graduated cylinder 2-1 is discharged from freeing port 3-1, reads the content of mensurated gas composition by the scale on the first sub-graduated cylinder 2-1.If gas content is very large, after the first sub-graduated cylinder 2-1 full scale, measurement mechanism can overturn rapidly, make the first sub-graduated cylinder 2-1 water filling port upward, the second sub-graduated cylinder 2-2 water filling port down, and the gas outlet of sample ore tank 89 is connected with the draft tube of air intake opening 4-2, the methane gas in sample ore tank enters in the second sub-graduated cylinder 2-2, proceeds draining measure from freeing port 3-2.Now, can supplement the water in the first sub-graduated cylinder 2-1.The second sub-graduated cylinder 2-2 reaches after full scale, and the analyzer that again overturns is rapidly connected the gas outlet of sample ore tank 89 with the draft tube of air intake opening 4-1, now, can supplement the water in the second sub-graduated cylinder 2-2.Such the first sub-graduated cylinder 2-1 and the second sub-graduated cylinder 2-2 are used alternatingly, until eudiometry finally completes.
The utility model has the advantage of, the desorption of mash gas velocity determination instrument of described embodiment can be realized continuous coverage methane gas content, has solved the problem that must interrupt gas desorption rule when measurement gas content surpasses testing tool graduated cylinder full scale.Compare with FHJ-5 type desorption of mash gas velocity determination instrument, this desorption of mash gas velocity determination instrument is transformed the graduated cylinder of FHJ-5 type desorption of mash gas velocity determination instrument, and single graduated cylinder is equally divided into two sub-graduated cylinder 2-1 and 2-2, increases an air intake opening and a freeing port.Significantly do not increasing on the basis of instrument quality and volume, combining the advantage of FHJ-2 type and FHJ-5 type, realizing the uninterrupted mensuration of methane gas desorb, reducing the loss amount of gas in mensuration process, methane gas content accuracy is improved greatly.
Any make of graduated cylinder of the present utility model in organic glass, plastics, transparent resin material, is difficult for broken.
Claims (5)
1. for a measurement mechanism for coal seam gas-bearing capacity, it is characterized in that: comprising: graduated cylinder, sample ore tank, gas outlet;
The main part of described graduated cylinder is divided equally from axis to be two graduated cylinder chambeies or to be comprised of two sub-graduated cylinders, is used for carrying water or the object gas of surveying; Two sub-graduated cylinders are from beginning to end side by side;
Described sample ore tank is a closed container, for storing the mineral samplers that contains gas of adopting;
Described gas outlet, for connecting sample ore tank and graduated cylinder, is that gas enters the passage of graduated cylinder from sample ore tank.
2. measurement mechanism according to claim 1, is characterized in that:
Described graduated cylinder comprises two bottom plugs, opens described bottom plug and is used to graduated cylinder water filling, closes the water filling port of described bottom plug sealing graduated cylinder; With
Two air intake openings, are arranged in the outside of the described water filling port end of graduated cylinder main body, are furnished with draft tube on air intake opening, for connecting the gas outlet that comes from sample ore tank; With
Two freeing port, are arranged in graduated cylinder main body both sides, adjoin with described air intake opening.
3. measurement mechanism according to claim 1, is characterized in that:
The sub-graduated cylinder of described graduated cylinder is from beginning to end side by side, and water filling port is separately opened on respectively graduated cylinder two ends, rather than same one end, and the scale of described sub-graduated cylinder indicates opposite direction.
4. measurement mechanism according to claim 2, is characterized in that:
Described device also comprises connection assist, and described connection assist comprises: suspension ring, piercing needle, spring clamp;
Described suspension ring, are arranged in the other end bottom contrary with described water filling port, in order to hang fixedly graduated cylinder;
Described piercing needle, for connecting gas outlet and sample ore tank;
Described spring clamp, is placed on described gas outlet, is used for blocking gas outlet temporarily.
5. measurement mechanism according to claim 1, is characterized in that:
Any make of described graduated cylinder in organic glass, plastics, transparent resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123323.5U CN203786110U (en) | 2014-03-18 | 2014-03-18 | Measurement device of coal seam methane content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123323.5U CN203786110U (en) | 2014-03-18 | 2014-03-18 | Measurement device of coal seam methane content |
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| Publication Number | Publication Date |
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| CN203786110U true CN203786110U (en) | 2014-08-20 |
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| CN201420123323.5U Expired - Lifetime CN203786110U (en) | 2014-03-18 | 2014-03-18 | Measurement device of coal seam methane content |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807028A (en) * | 2016-04-01 | 2016-07-27 | 太原理工大学 | Test device for desorbing gas by heating coal body through high temperature steam |
| CN107727528A (en) * | 2017-09-30 | 2018-02-23 | 河南理工大学 | The desorption of mash gas speed detecting method and device of a kind of no accumulated error |
| CN108318375A (en) * | 2018-04-08 | 2018-07-24 | 河南理工大学 | Circulating desorption of mash gas device and its assay method |
| CN108913540A (en) * | 2018-05-15 | 2018-11-30 | 西安建筑科技大学 | A kind of test micro anaerobic fermentation gas collecting apparatus and method |
| CN109187267A (en) * | 2018-09-29 | 2019-01-11 | 安徽理工大学 | A kind of water logging coal dust adsorption and desorption experimental provision and experimental method |
| 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 |
| CN110542623A (en) * | 2019-09-24 | 2019-12-06 | 中国矿业大学 | Automatic measuring device and method for gas content of coal seam in coal mine |
-
2014
- 2014-03-18 CN CN201420123323.5U patent/CN203786110U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807028A (en) * | 2016-04-01 | 2016-07-27 | 太原理工大学 | Test device for desorbing gas by heating coal body through high temperature steam |
| CN107727528A (en) * | 2017-09-30 | 2018-02-23 | 河南理工大学 | The desorption of mash gas speed detecting method and device of a kind of no accumulated error |
| CN108318375A (en) * | 2018-04-08 | 2018-07-24 | 河南理工大学 | Circulating desorption of mash gas device and its assay method |
| CN108318375B (en) * | 2018-04-08 | 2023-09-19 | 河南理工大学 | Circulating gas desorption device and measuring method thereof |
| CN108913540A (en) * | 2018-05-15 | 2018-11-30 | 西安建筑科技大学 | A kind of test micro anaerobic fermentation gas collecting apparatus and method |
| CN109187267A (en) * | 2018-09-29 | 2019-01-11 | 安徽理工大学 | A kind of water logging coal dust adsorption and desorption experimental provision and experimental method |
| CN109187267B (en) * | 2018-09-29 | 2024-02-13 | 安徽理工大学 | Experimental device and experimental method for water immersion pulverized coal adsorption and desorption |
| 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 |
| CN110542623A (en) * | 2019-09-24 | 2019-12-06 | 中国矿业大学 | Automatic measuring device and method for gas content of coal seam in coal mine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |