CN214584344U - Gas detection device under collecting space area gas drainage condition - Google Patents
Gas detection device under collecting space area gas drainage condition Download PDFInfo
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- CN214584344U CN214584344U CN202120365101.4U CN202120365101U CN214584344U CN 214584344 U CN214584344 U CN 214584344U CN 202120365101 U CN202120365101 U CN 202120365101U CN 214584344 U CN214584344 U CN 214584344U
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Abstract
The utility model discloses a gaseous detection device under collecting space area gas drainage condition, including gaseous detection host computer, aspiration pump, beam pipe and test tube, gaseous detection host computer is installed subaerial, and the aspiration pump is located gaseous detection host computer one side and through the mouth and the measuring port of taking out in advance of the gaseous detection host computer of hose fixed connection, beam pipe end and the beam pipe connector fixed connection of gaseous detection host computer, beam pipe head end connection test tube end, empty mining area check point is arranged in to the test tube head end. The utility model discloses the realization carries out dynamic monitoring analysis to the gas composition under the collecting space area gas drainage condition, masters the change of the pattern of collecting space area spontaneous combustion "three areas", reduces working strength, improves work efficiency, has broken through the difficult problem that upper corner and collecting space area gas were administered, collecting space area fire prevention and extinguishment difficulty to make upper corner, collecting space area gas and collecting surface carbon monoxide obtain effective control, improve mine construction factor of safety.
Description
Technical Field
The utility model belongs to the technical field of mine safety, especially, relate to a gaseous detection device under collecting space area gas drainage condition.
Background
The coal seams mined by the mine are II-type spontaneous combustion coal seams, carbon monoxide exists in different degrees in the stoping process of the coal face, the carbon monoxide is used as one of the marked gases for judging the natural ignition of the goaf, the carbon monoxide of the goaf is monitored and controlled to be imperative, the generation of the carbon monoxide of the goaf brings unnecessary troubles to the safe production of the goaf, the temperature and the gas composition change rule of the goaf are detected under the drainage condition of the goaf, three spontaneous combustion zones (namely a heat dissipation zone, an oxidation temperature rise zone and a suffocation zone) of the goaf are effectively determined, the fire prevention and extinguishing range can be effectively reduced, and effective fire prevention and extinguishing measures are convenient to take.
At present, the rule of gas composition change of a goaf under a gas drainage condition is detected by using an artificial underground actual measurement mode, but the factors of high labor intensity, low working efficiency and the like of the artificial actual measurement limit the efficiency, timeliness and safety of fire prevention and extinguishing detection, and the detection route is long, the speed of the artificial actual measurement is low, and the detection requirement of real-time data cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas detection device under collecting space area gas drainage condition to solve prior art and utilize the law that the artifical collecting space area gas composition that detects under the gas drainage condition changes, there is intensity of labour big, work efficiency is low, can not acquire the problem that real-time information is restricting the efficiency, the promptness and the security of preventing putting out a fire and detecting.
The utility model discloses a technical scheme be, a gaseous detection device under collecting space area gas drainage condition, detection device includes gaseous detection host computer, aspiration pump, beam tube and detecting tube, gaseous detection host computer is installed subaerial, and the aspiration pump is located gaseous detection host computer one side and through the mouth and the measuring port of taking out in advance of the gaseous detection host computer of hose fixed connection, beam tube end and the beam tube connector fixed connection of gaseous detection host computer, beam tube head end connection detecting tube end, the detecting tube head end is arranged in empty mining area check point.
Further, the detection tube includes steel pipe, sampling head, high-pressure tube and valve, a plurality of through-holes are seted up to interval predetermined distance on the steel pipe, and the sampling head is fixed to be set up inside the steel pipe and to be located the steel pipe end, and the sampling head passes through connector and high-pressure tube head fixed connection, and the high-pressure tube end is through the connector connection beam pipe, the valve setting is between high-pressure tube and beam pipe.
Furthermore, the sampling head is a hollow pipe with a preset length, the length of the sampling head is not more than 2/3 of the length of the steel pipe, and a plurality of sampling holes are formed in the sampling head at intervals of a preset distance.
Furthermore, the length of the steel pipe is 0.5-0.8m, the pipe diameter of the steel pipe is 100-150mm, 3-5 rows of through holes are circumferentially arranged along the length direction of the steel pipe, the spacing distance of each row of through holes is 0.1-0.12m, and the diameter of each through hole is 15-17 mm.
Furthermore, the pipe diameter of the sampling head is 15-20mm, 2-3 rows of sampling holes are circumferentially arranged along the length direction of the sampling head, the spacing distance of each row of sampling holes is 0.1-0.12m, and the aperture of each sampling hole is 5-7 mm.
Further, it still includes the beam tube rose box, the beam tube rose box sets up at the beam tube end, including filter and drainer for filter dust and aqueous vapor in the measuring gas.
Furthermore, the bundle pipe adopts two core pipes, a winding layer is arranged outside the bundle pipe, and a sheath is arranged outside the winding layer.
Furthermore, the middle part of the beam tube is provided with a joint.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model discloses a set up the detection tube at collecting space area especially upper corner detection section, connect the aspiration pump through the beam pipe and carry the gas that will detect to the gas detection host computer, realize carrying out dynamic monitoring analysis to the gas composition under the collecting space area gas drainage condition, grasp the change of the pattern of collecting space area spontaneous combustion "three areas", reduce artifical working strength, improve work efficiency, solved the contradiction with collecting space area fire prevention and detection under the gas drainage condition, broken through upper corner and collecting space area gas control, the difficult problem of collecting space area fire prevention and control difficulty, thereby make upper corner, collecting space area gas and mining face carbon monoxide obtain effective control, improve mine construction safety coefficient;
2) the sampling head of the detection tube is arranged in the steel tube, the sampling head is positioned at the tail end of the steel tube and does not exceed 2/3 of the length of the steel tube, so that the situation that water or fine sand enters the steel tube after the steel tube is inserted to block the sampling head or cause other influences is avoided, and the sampling tube and the steel tube are respectively provided with a sampling hole and a through hole, so that gas sampling by gas circulation is facilitated;
3) the utility model arranges a valve between the detecting tube and the beam tube, and adopts a connector to connect, thereby preventing gas from overflowing when the detecting tube is connected with the beam tube, and facilitating the disassembly and assembly when the detecting tube is replaced;
4) the utility model adopts the beam tube as the main conveying pipeline for detecting gas, which is convenient to lay in the tunnel and avoids the damage after extrusion to influence the gas detection, the beam tube adopts two core tubes, the two core tubes have good toughness and large diameter, and are convenient to maintain in use, the outside of the beam tube is provided with the winding layer, the outside of the winding layer is provided with the sheath, thereby effectively protecting the beam tube from being damaged by the crushing of the construction machinery;
5) the tail end of the beam tube is provided with a beam tube filter box for filtering dust and moisture in the detection gas, so that the gas detection result is accurate and effective;
6) the middle part of the beam tube is also provided with a joint for reconnecting the beam tube when the beam tube is broken, so that the beam tube is convenient to maintain and is used for connecting different beam tubes when a line is long.
Drawings
FIG. 1 is a schematic view of the connection of the device of the present invention;
FIG. 2 is a schematic view of the structure of the detection tube of the present invention;
FIG. 3 is a schematic view of the gas detecting device according to the present invention;
fig. 4 is a schematic structural view of a bundle tube filter box.
The labels in the figure are: 1. the gas detection system comprises a gas detection host machine, 2, an air pump, 3, a bundle pipe, 31, a joint, 4, a bundle pipe filter box, 41, a filter, 42, a drainer, 5, a detection pipe, 51, a steel pipe, 52, a sampling head, 53, a high-pressure pipe, 54, a valve, 55 and a connector.
Detailed Description
Referring to fig. 1-4, a gas detection device under the gas drainage condition in a goaf includes a gas detection host 1, a gas pump 2, a bundle pipe 3, a bundle pipe filter box 4 and a detection pipe 5.
The gas detection host machine 1 adopts a KJ428 mining distributed laser fire monitoring system and is arranged on the ground, the air pump 2 is positioned on one side of the gas detection host machine 1 and is fixedly connected with a pre-pumping port and a measuring port of the gas detection host machine 1 through a hose, the tail end of the beam tube 3 is fixedly connected with a beam tube connecting port of the gas detection host machine 1, the head end of the beam tube 3 is connected with the tail end of the detection tube 5, and the head end of the detection tube 5 is arranged at an empty mining area detection point. In the using process, the gas detection host 1 controls the air pump 2 to start or stop, and gas at the tail end of the goaf detection pipe 5 is pumped into the detection host 1 for data analysis.
In this embodiment, beam tube 3 adopts two core pipes, and two core pipes have that toughness is good, the pipe diameter is big, convenient connection and later maintenance's advantage in the use, and beam tube 3 outside is equipped with the winding layer, and the winding layer outside is equipped with the sheath, effectively protects beam tube 3 not damaged by construction machinery crushing emergence.
The middle part of the beam tube 3 is also provided with a joint 31, the joint 31 adopts a quick straight joint, and when the beam tube 3 is damaged and broken, the joint 31 is used for reconnecting the beam tube 3, the recovery system is used for air extraction, and when the beam tube 3 is wound, the joint 31 can be directly disconnected and connected after straightening.
The beam tube filter box 4 is arranged at the tail end of the beam tube 3 and is positioned between the beam tube 3 and the gas detection host 1, and the beam tube filter box 4 comprises a filter 41 and a drainer 42 and is used for filtering dust and moisture in the detection gas; specifically, the inlet of the bundle pipe filter tank 4 is communicated with the filter 41 through a pipeline, the filter 41 is communicated with the drain 42 through a pipeline, and the drain 42 is communicated with the outlet of the bundle pipe filter tank 4 through a pipeline.
The detection pipe 5 comprises a steel pipe 51, a sampling head 52, a high-pressure pipe 53 and a valve 54, wherein a plurality of through holes 511 are formed in the steel pipe 51 at intervals of a preset distance, the sampling head 52 is fixedly arranged in the steel pipe 51 and positioned at the tail end of the steel pipe 51, and the joint of the sampling head 52 and the tail end of the steel pipe 51 is welded or sealed and connected by adopting sealing cement; the sampling head 52 is a hollow pipe with a preset length, the length of the sampling head 52 is not more than 2/3 of the length of the steel pipe 51, a plurality of sampling holes 521 are formed in the sampling head 52 at intervals of a preset distance, so that the situation that water or fine sand enters the steel pipe 51 to block or influence the sampling head 52 after the steel pipe 51 is inserted is avoided, and the sampling holes 521 and the through holes 511 are formed in the sampling head 52 and the steel pipe 51 respectively, so that gas sampling by gas circulation is facilitated.
The sampling head 52 is fixedly connected with the head end of the high-pressure pipe 53 through the connector 55, the tail end of the high-pressure pipe 53 is connected with the beam tube 3 through the connector 55, the valve 54 is arranged between the high-pressure pipe 55 and the beam tube 3, gas is prevented from overflowing when the detection tube 5 is connected with the beam tube 3, and the detection tube 5 is convenient to replace, disassemble and assemble.
In this embodiment, the length of the steel pipe 51 is 0.5m, the pipe diameter of the steel pipe 51 is 100mm, 4 rows of through holes 511 are uniformly arranged along the circumferential direction of the length direction of the steel pipe 51, the spacing distance of each row of through holes 511 is 0.1m, and the diameter of each through hole 511 is 15 mm; the pipe diameter of sampling head 52 is 20mm, and sampling hole 521 sets up 2 rows along sampling head 52 length direction circumference, and the spacing distance of every row of sampling hole 521 is 0.1m, and sampling hole 521 aperture is 5 mm. The steel pipe 51 and the sampling head 52 are arranged to meet the sampling requirement of gas detection, and are convenient to set and install, so that the practicability is high.
The using method comprises the following steps: the detection pipes are arranged at the upper corner of the goaf, the detection pipes are arranged at intervals of 10m from the upper corner downwards, the beam pipes are installed corresponding to the detection pipes, the gas detection host is mainly arranged at the gas detection host from the goaf through a return airway, the gas detection host, the air pump, the beam pipes, the beam pipe filter box and the detection pipes are connected according to the above, the air pump is controlled to start or stop by the gas detection host under the goaf pumping condition, the gas at the tail end of the goaf detection pipe is pumped into the detection host for data analysis, the three-belt layout under the goaf pumping condition is determined according to the data analysis, the goaf gas composition change is mastered by adjusting the pumping amount, the problem of the goaf caused by goaf oxidation is solved, the risk of spontaneous combustion of the goaf due to natural ignition is reduced, and various management works of mine fire prevention and extinguishment are scientifically and reasonably implemented.
Claims (8)
1. The utility model provides a gaseous detection device under collecting space area gas drainage condition, its characterized in that, detection device includes gaseous detection host computer (1), aspiration pump (2), beam tube (3) and test tube (5), gaseous detection host computer (1) is installed subaerial, and aspiration pump (2) are located gaseous detection host computer (1) one side and through the mouth and the measurement mouth of taking out in advance of hose fixed connection gaseous detection host computer (1), beam tube (3) end and the beam tube connector fixed connection of gaseous detection host computer (1), beam tube (3) head end connection test tube (5) end, and empty mining area check point is arranged in to test tube (5) head end.
2. The gas detection device under the goaf gas drainage condition of claim 1, wherein: the detection pipe (5) comprises a steel pipe (51), a sampling head (52), a high-pressure pipe (53) and a valve (54), a plurality of through holes (511) are formed in the steel pipe (51) at intervals at preset distances, the sampling head (52) is fixedly arranged inside the steel pipe (51) and located at the tail end of the steel pipe (51), the sampling head (52) is fixedly connected with the head end of the high-pressure pipe (53) through a connector (55), the tail end of the high-pressure pipe (53) is connected with a bundle pipe (3) through the connector (55), and the valve (54) is arranged between the high-pressure pipe (53) and the bundle pipe (3).
3. The gas detection device under the goaf gas drainage condition of claim 2, wherein: the sampling head (52) is a hollow pipe with a preset length, the length of the sampling head (52) does not exceed 2/3 of the length of the steel pipe (51), and a plurality of sampling holes (521) are formed in the sampling head (52) at intervals of a preset distance.
4. The gas detection device under the goaf gas drainage condition of claim 2, wherein: the length of the steel pipe (51) is 0.5-0.8m, the pipe diameter of the steel pipe (51) is 100-150mm, 3-5 rows of through holes (511) are circumferentially arranged along the length direction of the steel pipe (51), the spacing distance of each row of through holes (511) is 0.1-0.12m, and the diameter of the through holes (511) is 15-17 mm.
5. The gas detection device under the goaf gas drainage condition of claim 2, wherein: the pipe diameter of the sampling head (52) is 15-20mm, 2-3 rows of sampling holes (521) are circumferentially arranged along the length direction of the sampling head (52), the spacing distance of each row of sampling holes (521) is 0.1-0.12m, and the aperture of each sampling hole (521) is 5-7 mm.
6. The gas detection device under the goaf gas drainage condition of claim 1, wherein: it still includes beam tube filter tank (4), beam tube filter tank (4) set up at beam tube (3) end, including filter (41) and drainer (42), are used for filtering dust and aqueous vapor in the measuring gas.
7. The gas detection device under the goaf gas drainage condition of claim 1, wherein: the bundle pipe (3) adopts two core pipes, a winding layer is arranged outside the bundle pipe (3), and a sheath is arranged outside the winding layer.
8. The gas detection device under the goaf gas drainage condition of claim 1, wherein: the middle part of the beam tube (3) is provided with a joint (31).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120365101.4U CN214584344U (en) | 2021-02-08 | 2021-02-08 | Gas detection device under collecting space area gas drainage condition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120365101.4U CN214584344U (en) | 2021-02-08 | 2021-02-08 | Gas detection device under collecting space area gas drainage condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118010434A (en) * | 2024-04-10 | 2024-05-10 | 中国矿业大学 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
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2021
- 2021-02-08 CN CN202120365101.4U patent/CN214584344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118010434A (en) * | 2024-04-10 | 2024-05-10 | 中国矿业大学 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
| CN118010434B (en) * | 2024-04-10 | 2024-06-04 | 中国矿业大学 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
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