CN103995094A - Experiment device of rotatably disturbing coal body rich in gas - Google Patents
Experiment device of rotatably disturbing coal body rich in gas Download PDFInfo
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- CN103995094A CN103995094A CN201410263097.5A CN201410263097A CN103995094A CN 103995094 A CN103995094 A CN 103995094A CN 201410263097 A CN201410263097 A CN 201410263097A CN 103995094 A CN103995094 A CN 103995094A
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Abstract
The invention relates to a coal sample experiment device, and particularly relates to an experiment device of rotatably disturbing a coal body rich in gas. The experiment device comprises a coal sample tank, wherein the coal sample tank is arranged in a fixed ring, the fixed ring is arranged in a fixed frame, two ends of the fixed frame are respectively connected with a rear transmission shaft and a front transmission shaft, the rear transmission shaft is arranged on a rear support frame through a rear ball bearing, the front transmission shaft is arranged on a front support frame through a front ball bearing, a motor drives the rear transmission shaft through a transmission belt, and the coal sample tank is respectively connected with a gas inlet pipe and a shockproof pressure meter. According to the experiment device, the coal body rich in the gas is disturbed by adopting a rotating manner, the change of the pressure of the gas under the disturbance of an external force is observed, an experiment means is provided for scientific research of the adsorption balance of coal to the gas, and the principle of inducing dynamic disaster by disturbing of an excavation operation is favorably disclosed early. A steel ball is arranged in the tank in advance, the motor rotates to disturb the coal sample rich in the gas and the shockproof pressure meter displays a gas pressure of the coal sample in the tank, thus the experiment device has the advantages of simplicity in operation and large disturbance strength.
Description
Technical field
The present invention relates to coal sample experimental provision, particularly the experimental provision of the full coal seam with gas of a kind of rotation disturbance.
Background technology
Coal is a kind of porous medium with strong adsorption ability; Therefore, it has been generally acknowledged that the gas in coal body exists with free state and two kinds of forms of ADSORPTION STATE, wherein, free state gas accounts for 10-20%, and ADSORPTION STATE gas accounts for 80-90%.Coal-bed gas pressure is that in the hole of coal seam, the acting force producing is clashed in the motion of gas molecule Free Thermal, and namely free state gas is done the macroscopic view embodiment that random motion is clashed into; Therefore, quantity and the movement velocity thereof of free state gas in the coal-bed gas pressure unit of depending primarily on volume of voids.
Under adsorption equilibrium state, and the coal body of temperature constant, free state gas and ADSORPTION STATE gas distribute by a certain percentage, show certain gas pressure numerical value; When this coal body is subject to digging activity or tectonic movement and affects, original adsorption equilibrium will be broken, and free state gas quantity and movement velocity thereof also will change, and this directly causes the rising of coal-bed gas pressure; Coal-bed gas pressure is the key parameter of weighing gas dynamical disaster danger, and gas pressure is larger, and the danger that gas action disaster occurs is higher, this also just digging operation easily induce a kind of major reason of gas dynamical disaster.
Existing about External force interference coal body the experimental provision to gas adsorption balance, perturbation mode is additional electric activator, this apparatus structure is complicated, and experiment link is many.
Summary of the invention
For above-mentioned technical matters, the invention provides a kind of simple in structure, operation easily row can bring the experimental provision of strong disturbance to full coal seam with gas.
The technical scheme solving the problems of the technologies described above is:
An experimental provision for the full coal seam with gas of rotation disturbance, comprises coal sample tank, and coal sample tank is arranged in set collar, and set collar is arranged in fixed frame, and the two ends of fixed frame are connected with respectively inter-axle shaft and front propeller shaft; Inter-axle shaft is arranged on rear support stand by rear ball bearing, and front propeller shaft is arranged on front support stand by front ball bearing; Motor drives inter-axle shaft by driving belt;
Coal sample tank is connected with respectively draft tube and shockproof pressure gage, and valve is installed in draft tube, and shockproof pressure gage is arranged on coal sample tank by tracheae; Coal sample tank inwall is lined with cotton-wool, and iron ball and experiment coal sample are placed in coal sample tank.
Described rear support stand, front support stand and motor are arranged on elastic damping pad.
Compared with prior art, the present invention adopts the rotation mode disturbance coal seam with gas of satisfying, observe the variation of gas pressure under outer force-disturbance, for coal provides a kind of laboratory facilities to the scientific research of gas adsorption balance, be conducive to disclose early the mechanism that digging operation disturbance induction dynamic disaster occurs.The present invention adopts and in tank, to add in advance steel ball, motor rotation disturbance is full of coal sample for gas test and shockproof pressure gage shows coal sample gas pressure in tank, have advantages of simple to operate, strength of turbulence is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail, object is only better to understand content of the present invention.
As shown in Figure 1, the experimental provision of the full coal seam with gas of rotation disturbance, comprises coal sample tank 13, and coal sample tank 13 is arranged in set collar 11, and set collar 11 is arranged in fixed frame 8, and the two ends of fixed frame 8 are connected with respectively inter-axle shaft 4 and front propeller shaft 18; Inter-axle shaft 4 is arranged on rear support stand 6 by rear ball bearing 5, and front propeller shaft 18 is arranged on front support stand 20 by front ball bearing 21; Motor 2 drives inter-axle shaft 4 by driving belt 3;
Coal sample tank 13 is connected with respectively draft tube 9 and shockproof pressure gage 15, and valve 10 is installed in draft tube 9, and shockproof pressure gage 15 is arranged on coal sample tank 13 by tracheae 14; Coal sample tank 13 inwalls are lined with cotton-wool 12, and iron ball and experiment coal sample 16 are placed in coal sample tank 13.
Described rear support stand 6, front support stand 20 and motor 2 are arranged on elastic damping pad 1.
During use, iron ball and experiment coal sample 16 are positioned in coal sample tank 13, tighten the lid of coal sample tank 13, draft tube 9, valve 10, tracheae 14 and shockproof pressure gage 15 are connected to coal sample tank 13; Open valve 10, by draft tube 9 to the interior injection methane gas of coal sample tank 13; Coal sample tank 13 is arranged in set collar 11, is fixed; Wait for gas adsorption balance, record gas pressure; Start motor 2, drive 13 rotations of coal sample tank; Record different rotating speeds and the gas pressure under the disturbance time, thereby can realize the full coal seam with gas experiment of rotation disturbance.
Claims (2)
1. an experimental provision for the full coal seam with gas of rotation disturbance, comprises coal sample tank, it is characterized in that: coal sample tank is arranged in set collar, and set collar is arranged in fixed frame, and the two ends of fixed frame are connected with respectively inter-axle shaft and front propeller shaft; Inter-axle shaft is arranged on rear support stand by rear ball bearing, and front propeller shaft is arranged on front support stand by front ball bearing; Motor drives inter-axle shaft by driving belt;
Coal sample tank is connected with respectively draft tube and shockproof pressure gage, and valve is installed in draft tube, and shockproof pressure gage is arranged on coal sample tank by tracheae; Coal sample tank inwall is lined with cotton-wool, and iron ball and experiment coal sample are placed in coal sample tank.
2. the experimental provision of the full coal seam with gas of rotation disturbance according to claim 1, is characterized in that: described rear support stand, front support stand and motor are arranged on elastic damping pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263097.5A CN103995094A (en) | 2014-06-14 | 2014-06-14 | Experiment device of rotatably disturbing coal body rich in gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263097.5A CN103995094A (en) | 2014-06-14 | 2014-06-14 | Experiment device of rotatably disturbing coal body rich in gas |
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| Publication Number | Publication Date |
|---|---|
| CN103995094A true CN103995094A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410263097.5A Pending CN103995094A (en) | 2014-06-14 | 2014-06-14 | Experiment device of rotatably disturbing coal body rich in gas |
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| CN (1) | CN103995094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN110568027A (en) * | 2019-09-29 | 2019-12-13 | 中国矿业大学(北京) | Coal rock adsorption and desorption integrated resistivity measurement system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206956Y (en) * | 1994-06-29 | 1995-09-06 | 中国矿业大学 | Coal sample initial release gas energy measuring device |
| CN202105830U (en) * | 2011-06-01 | 2012-01-11 | 常州市方嘉电子仪器有限公司 | Coal cup rotating mechanism |
| CN203011791U (en) * | 2012-12-20 | 2013-06-19 | 河南理工大学 | Gas absorption/desorption testing device |
| CN103316824A (en) * | 2013-06-21 | 2013-09-25 | 李琴 | Rotating rack |
| CN203241406U (en) * | 2013-02-06 | 2013-10-16 | 河南理工大学 | Coal dust methane gas diffusion measuring device |
| CN203422298U (en) * | 2013-04-26 | 2014-02-05 | 中煤科工集团西安研究院 | Residual gas tank |
| CN103780005A (en) * | 2012-10-24 | 2014-05-07 | 上海微电子装备有限公司 | Rotating motor device |
| CN203870100U (en) * | 2014-06-14 | 2014-10-08 | 开滦(集团)有限责任公司技术中心 | Experimental device rotatably disturbing coal containing gas |
-
2014
- 2014-06-14 CN CN201410263097.5A patent/CN103995094A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206956Y (en) * | 1994-06-29 | 1995-09-06 | 中国矿业大学 | Coal sample initial release gas energy measuring device |
| CN202105830U (en) * | 2011-06-01 | 2012-01-11 | 常州市方嘉电子仪器有限公司 | Coal cup rotating mechanism |
| CN103780005A (en) * | 2012-10-24 | 2014-05-07 | 上海微电子装备有限公司 | Rotating motor device |
| CN203011791U (en) * | 2012-12-20 | 2013-06-19 | 河南理工大学 | Gas absorption/desorption testing device |
| CN203241406U (en) * | 2013-02-06 | 2013-10-16 | 河南理工大学 | Coal dust methane gas diffusion measuring device |
| CN203422298U (en) * | 2013-04-26 | 2014-02-05 | 中煤科工集团西安研究院 | Residual gas tank |
| CN103316824A (en) * | 2013-06-21 | 2013-09-25 | 李琴 | Rotating rack |
| CN203870100U (en) * | 2014-06-14 | 2014-10-08 | 开滦(集团)有限责任公司技术中心 | Experimental device rotatably disturbing coal containing gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN104880543B (en) * | 2015-06-16 | 2016-08-31 | 西安科技大学 | Underground coal mine CO source mechanism and disappearance study mechanism are experimentally |
| CN110568027A (en) * | 2019-09-29 | 2019-12-13 | 中国矿业大学(北京) | Coal rock adsorption and desorption integrated resistivity measurement system |
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Application publication date: 20140820 |