CN114562333A - Mine underground gas concentration monitoring equipment - Google Patents
Mine underground gas concentration monitoring equipment Download PDFInfo
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- CN114562333A CN114562333A CN202210200962.6A CN202210200962A CN114562333A CN 114562333 A CN114562333 A CN 114562333A CN 202210200962 A CN202210200962 A CN 202210200962A CN 114562333 A CN114562333 A CN 114562333A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 214
- 238000001514 detection method Methods 0.000 claims abstract description 126
- 239000002912 waste gas Substances 0.000 claims abstract description 35
- 230000001939 inductive effect Effects 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 32
- 239000000428 dust Substances 0.000 claims description 13
- 238000012806 monitoring device Methods 0.000 claims description 10
- 239000001307 helium Substances 0.000 claims description 9
- 229910052734 helium Inorganic materials 0.000 claims description 9
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 2
- 239000003245 coal Substances 0.000 abstract description 18
- 230000001976 improved effect Effects 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000036541 health Effects 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
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of coal mines, in particular to underground gas concentration monitoring equipment, which comprises a shell, wherein one side of the shell is provided with a controller, the bottom of an inner cavity of the shell is provided with an electric telescopic rod, the top of the electric telescopic rod is provided with an extending part, the top of the extending part is provided with a detection part, the inside of the detection part is provided with an air inducing part, the top of the detection part and the shell form a waste gas cavity through a first electromagnetic valve, the bottom of the extending part and the shell form a buffer cavity, and buffer gas with stable property and density smaller than that of gas is arranged in the buffer cavity. And detection interference items are reduced, and the detection precision is improved.
Description
Technical Field
The invention relates to the technical field of coal mines, in particular to underground gas concentration monitoring equipment.
Background
Coal mine electricity refers to coal mining machinery, belongs to a large category of machinery, is special for coal mining machinery, is different from other mining machinery due to the special characteristics of the coal mining machinery, is used as a large country for coal production, the yield of coal in China is continuously improved every year, the yield of coal in China is broken through by 24 hundred million tons in the whole country at the end of 2008, and the production of the coal mining machinery plays a role in playing a vital role in China.
However, in the coal mining process, gas can be emitted from surrounding rocks of a roadway, coal beds, goafs and the like, and the emitted gas can not only harm the life health of underground workers, but also cause serious safety accidents, so that the method has remarkable significance for timely, effectively and conveniently detecting the gas concentration of a working face.
The invention of Chinese patent CN2020102601925 relates to a coal mine gas detection device, comprising a box body, wherein the box body is provided with a main switch, an air inlet pipe is arranged above the box body, one end of the air inlet pipe is communicated with a filter pipe, the other end of the air inlet pipe is communicated with an air suction pump, the air suction pump is communicated with a gas sensor, the box body is provided with a loudspeaker and an alarm lamp, a control circuit and a power supply are arranged inside the box body, one side of the box body is provided with a gas compression tank, an air discharge pipe of the gas compression tank is provided with an electric valve, the input end of the control circuit is electrically connected with the gas sensor, the output end of the control circuit is connected with the loudspeaker, the alarm lamp, the electric valve, a first Bluetooth module and a second Bluetooth module, the first Bluetooth module is connected with an aboveground monitoring center, the second Bluetooth module is connected with a bracelet receiver, the bracelet receiver is positioned on a control panel of the bracelet, a display screen, a bracelet warning device and a control chip are arranged in the control panel, the input end of the control chip is connected with the bracelet receiver, display screen, bracelet warning device are connected to the control chip output, however, this gas monitor can not realize remote detection, need the manual work to go down to darker mine in, because the concentration of the lower gas of darker mine, harmful gas is unknown, and personnel go down to have danger, so use very inconvenient.
Simultaneously current gas detection device can not detect the co-altitude in same vertical plane to the extension pipe can't adjust according to actual altitude, and then leads to the detected data inaccurate, detects the precision and hangs down, remains and to detect the inside gas that remains of cover and extension pipe and can cause the hindrance to subsequent detection, influences the precision of subsequent detection, and the gas after detecting when actual detection discharges easily and causes the pollution to the environment at will.
Disclosure of Invention
The invention aims to provide underground gas concentration monitoring equipment, which solves the problems that the traditional gas monitor in the prior art can not realize remote detection, needs to be manually put into a deeper mine, is very inconvenient to use and low in detection precision due to the fact that the concentrations of gas and harmful gas at the bottom of the deeper mine are unknown and danger exists among people, and can not detect multiple groups of heights on the same vertical plane, and the detected gas is discharged randomly to pollute the environment.
In order to achieve the purpose, the invention adopts the following technical scheme: the underground gas concentration monitoring equipment comprises a shell, wherein a controller is arranged on one side of the shell, an electric telescopic rod is arranged at the bottom of an inner cavity of the shell, an extending part is arranged at the top of the electric telescopic rod, a detecting part is arranged at the top of the extending part, and an induced air part is arranged inside the detecting part;
the top of the detection part and the inner cavity of the shell form a waste gas cavity through a first electromagnetic valve, the bottom of the extension part and the inner cavity of the shell form a buffer cavity, buffer gas with density smaller than that of gas and stable property is arranged in the buffer cavity, an air pressure sensor is arranged in the buffer cavity and used for detecting the air pressure value in the buffer cavity, and an air supplement box is arranged on one side of the shell through a one-way valve;
the extension part comprises a partition plate in sealing sliding connection with the inner wall of the shell, a communication pipe is communicated with the center of the bottom of the partition plate through a second electromagnetic valve, one end, far away from the partition plate, of the communication pipe is communicated with an extension pipe penetrating through the bottom of the shell, the other end of the extension pipe is communicated with an air inlet pipe, an inflatable air bag is arranged on the outer surface of the extension pipe and close to the end of the air inlet pipe through a third electromagnetic valve, a distance sensor is arranged at the bottom of the inflatable air bag and used for detecting the height value of the inflatable air bag, the inflatable air bag is fixedly connected with the air inlet pipe, an air guide pipe is arranged on the outer surface of the extension pipe, one end of the air guide pipe is fixedly connected with the bottom of the inner wall of the buffer cavity, and the other end of the air guide pipe is communicated with the inflatable air bag;
the detection part comprises a detection cover detachably connected with the top of the partition plate, mounting plates for mounting the gas sensor are arranged on two sides of the top of an inner cavity of the detection cover, and a support fixedly connected with bolts on the inner wall of the detection cover is arranged on one side, opposite to the mounting plates;
after the detection of a certain height in the mine is finished, the electric telescopic rod is started to drive the partition plate to descend, the volume in the buffer cavity is reduced, the buffer gas enters the inflatable air bag along the gas guide pipe, the controller controls the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to be opened, and the buffer gas in the inflatable air bag carries the gas to reach the waste gas cavity along the extension pipe and the detection cover; when the gas concentration detected by the gas sensor is lower than a set threshold value, the controller controls the first electromagnetic valve and the third electromagnetic valve to be closed, the volume of the inflatable air bag is continuously increased, and the air inlet pipe at the end part is driven to ascend to a required height.
The invention has at least the following beneficial effects:
1. need when examining remote mine, place into mine inside with the extension pipe, install gas sensor to corresponding on the mounting panel, open the motor, the output shaft of motor drives driving gear dish and driven gear dish and rotates, thereby drive axostylus axostyle and blade and rotate, can be through the intake pipe of extension pipe tip, the dust cover can avoid the dust to get into to the extension intraduct, inside air suction to the casing in the mine, carry out gas concentration detection to the air in the mine through gas sensor, rational in infrastructure, adopt this equipment can detect gas concentration to the colliery depths, avoid the danger of artifical entering, the testing process is swift, it is accurate.
2. The gas guide pipe, the inflatable air bag, the electric telescopic rod, the buffering part and other parts are matched with each other, so that the detection of the gas concentrations of different heights on the same vertical plane in a mine is jointly realized, the electric telescopic rod is started to drive the partition board to descend, the partition board extrudes the buffering gas in the buffering part, the buffering gas enters the inflatable air bag along the gas guide pipe, the volume of the inflatable air bag is increased, the buffering air bag can drive the gas inlet pipe at the end part to ascend due to the fact that the density of the buffering gas is smaller than that of the gas, and further the detection is performed on the mines with different heights, the device is reasonable in structure, high in matching linkage, the buffering part can be extruded to drive the buffering gas to enter the gas guide pipe when the partition board moves downwards, meanwhile, the length of the extension pipe can be increased when the partition board descends, the gas inlet pipe at the end part is better matched to detect the gas concentrations of the gas with different heights in the same vertical plane, and the device effectively realizes the detection of the gas concentrations of the gas with different heights in the same vertical plane, the detection data is more accurate, the detection precision is higher, the detection range is wider, and the requirements of actual production detection are effectively met.
3. Through the mutual matching of the components such as the waste gas cavity, the gas guide pipe, the extension pipe, the detection cover and the like, the problems of discharging and collecting residual gas in the extension pipe, the gas inlet pipe and the detection cover are jointly solved, when the electric telescopic rod drives the partition plate to descend, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are opened, the buffer gas enters the extension pipe along the inflatable airbag and further reaches the inside of the detection cover through the extension pipe, the buffer gas can discharge the gas in the extension pipe, so that the waste gas reaches the inside of the waste gas cavity along the first electromagnetic valve to be recycled, the volume of the waste gas cavity is increased due to the descending of the partition plate, the concentration of the gas in the waste gas cavity is reduced, no safety accident occurs, the device correspondingly adjusts the volume of the waste gas cavity when the detection height of the gas inlet pipe is changed, and further reduces the concentration of the gas recycled into the waste gas cavity, the further security performance of guaranteeing the device of cooperation buffer gas's stability can also carry out the clear miscellaneous of exhausting to extension pipe and detection cover inside when constantly changing the detection height, improves the cleaning performance of device, avoids causing the hindrance to subsequent detection, further improves and detects the precision, convenient to use, and detection range is wide, and the security performance is secure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the cover plate structure of the present invention;
FIG. 3 is a schematic view of the housing structure of the present invention;
FIG. 4 is a schematic view of the structure of the air inducing portion of the present invention;
FIG. 5 is a schematic view of a detecting portion according to the present invention;
FIG. 6 is a schematic view of an extension structure according to the present invention;
FIG. 7 is a cross-sectional structural view of the position of the extension pipe of the present invention;
fig. 8 is an enlarged schematic view of a portion a in fig. 3.
In the figure: 1. moving the base; 2. a housing; 3. a port; 4. a cover plate; 5. a handle; 6. an air inducing portion; 601. a support frame; 602. a blade; 603. a driven gear plate; 604. a driving gear plate; 605. a motor; 606. a shaft lever; 7. a detection unit; 701. a gasket; 702. a detection cover; 703. mounting a plate; 704. a support; 8. an extension portion; 801. a partition plate; 803. a communicating pipe; 804. an extension pipe; 806. a dust cover; 807. an air inlet pipe; 808. an air duct; 9. an inflatable air bag; 10. an electric telescopic rod; 11. a gas supplementing box; 12. an exhaust gas chamber; 13. a buffer chamber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
First embodiment
As shown in fig. 1 to 6, a mine gas concentration monitoring device includes a casing 2, a controller is disposed on one side of the casing 2, the controller electrically controls electrical components, a movable base 1 is disposed at the bottom of the casing 2, and the movable base 1 is used for facilitating position transfer of the casing 2.
An electric telescopic rod 10 is arranged at the bottom of an inner cavity of the shell 2, an extension part 8 is arranged at the top of the electric telescopic rod 10, the electric telescopic rod 10 can drive the extension part 8 at the top to move in the shell 2, a detection part 7 is arranged at the top of the extension part 8, the detection part 7 is used for detecting the gas concentration of the gas under the mine, an air induction part 6 is arranged in the detection part 7, the air induction part 6 mainly pumps the gas under the mine into the detection part 7, the detection part 7 is further convenient to detect the gas concentration, the top of the detection part 7 and the shell 2 form a waste gas cavity 12 through a first electromagnetic valve, the first electromagnetic valve is opened after the detection of the detection part 7 is finished, the residual gas in the detection part 7 is discharged into the waste gas cavity 12, and the subsequent detection is prevented from being blocked,
extension 8 includes baffle 801 with the sealed sliding connection of casing 2 inner wall, baffle 801 bottom center department has communicating pipe 803 through the second solenoid valve intercommunication, communicating pipe 803 keeps away from the one end intercommunication of baffle 801 has the extension pipe 804 that runs through casing 2 bottom, the other end intercommunication of extension pipe 804 has intake pipe 807, intake pipe 807 can directly stretch into under the mine, inside with outside gas suction intake pipe 807 through induced air portion 6, and finally reach in the detection portion 7 and detect in the extension pipe 804 along intake pipe 807 entering, a plurality of inlet port has been seted up to the outer wall of intake pipe 807, the outside of intake pipe 807 is equipped with dust cover 806, dust cover 806 surface is equipped with the through-hole corresponding with the inlet port, through the setting of inlet port, be convenient for the air admission, setting through dust cover 806, avoid the dust to get into.
Through extension 8, induced air portion 6 and detection portion 7's setting, when needing to inspect remote mine, place extension pipe 804 inside the mine, install gas sensor to corresponding on the mounting panel 703, open induced air portion 6, can be through extension pipe 804 with the air suction in the mine inside to detection portion 7, carry out gas concentration detection to the air in the mine through gas sensor, rational in infrastructure, adopt this equipment can detect gas concentration to the colliery depths, avoid the danger of artifical entering, the testing process is swift, it is accurate.
The top both sides of casing 2 and the position that is located port 3 all are equipped with port 3 looks adaptation and with 2 top bolt fixed connection's of casing apron 4, and the top of two apron 4 all is equipped with handle 5, and is concrete, through the setting of apron 4 and handle 5, is convenient for protect port 3 department.
The bottom both sides of detecting cover 702 all are connected with the top of baffle 801 through sealed the pad 701, and is concrete, through the setting of support 704, are convenient for connect mounting panel 703, can guarantee the sealing performance of detection portion 7 through sealed pad 701, improve and detect the precision.
The induced draft part 6 comprises a supporting frame 601 fixedly connected with the top of the detection cover 702 and a supporting frame 601, the top of the supporting frame 601 is rotatably connected with a shaft rod 606, one end of the shaft rod 606 is rotatably connected with the top of an inner cavity of the detection cover 702, the outer ring of the shaft rod 606 is provided with a plurality of blades 602, the top of the outer ring of the shaft rod 606 is sleeved with a driven gear disc 603, one side of the top of the shell 2 is provided with a motor 605, an output shaft of the motor 605 is in transmission connection with a driving gear disc 604 which is in meshing connection with the driven gear disc 603 through the top of the shell 2 through a shaft sleeve, specifically, through the arrangement of the induced draft part 6, the air in the mine is conveniently introduced into the shell 2,
detect the inside safety cover that is equipped with of cover 702, driven toothed disc 603 and driving toothed disc 604 all are located inside the safety cover, and the effect through the safety cover can avoid gas to get into driven toothed disc 603 and driving toothed disc 604 effectively, and then causes the hindrance to the normal use of device.
During the use, when needing to inspect remote mine, place into mine inside extension pipe 804, install gas sensor to corresponding mounting panel 703 on, open motor 605, motor 605's output shaft drives driving gear dish 604 and driven gear dish 603 and rotates, thereby drive axostylus axostyle 606 and blade 602 and rotate, can be through the intake pipe 807 of extension pipe 804 tip with the air suction in the mine to the inside of detection portion 7, carry out gas concentration detection to the air in the mine through gas sensor, dust cover 806 can avoid the dust to enter into extension pipe 804 inside, first solenoid valve is opened during the detection, gas waste gas in the detection portion 7 directly gets into in the waste gas chamber 12 and retrieves, rational in infrastructure, adopt this equipment can detect gas concentration to the colliery depths, avoid the danger of artifical entering, the testing process is swift, it is accurate.
Second embodiment
As shown in fig. 7 and 8, according to the first embodiment, when the underground gas concentration monitoring equipment is actually used, the gas concentration detection needs to be performed at multiple points on the same vertical plane inside the mine, but the gas inlet pipe 807 cannot be moved, further, the actual detection requirement under the mine cannot be met, meanwhile, the gas concentration in the waste gas cavity 12 is gradually increased during long-time detection, so that the hazards of explosion and the like exist, and the air inducing part 6 is continuously operated, part of the residual gas can be in the detection cover 702 and the extension pipe 804, further, when the gas concentration in the detection section 7 is detected, there are problems such as low detection accuracy, variations in the detected concentration, and the circumstances such as jam can appear when extension pipe 804 uses for a long time in the pit, in order to solve above problem, improve the detection capability and the precision of device, this gas concentration monitoring facilities in the pit still includes: buffer chamber 13 is constituteed with 2 inner chambers of casing to the bottom of extension 8, be equipped with density in buffer chamber 13 and be less than gas and the stable buffer gas of nature, be equipped with baroceptor in the buffer chamber 13 and be used for detecting its inside atmospheric pressure value, one side of casing 2 is equipped with tonifying qi case 11 through the check valve, then can drive extension 8 downstream when electric telescopic handle 10 downstream, can increase the volume of waste gas chamber 12 when extension 8 downstream, and then reduce its inside gas concentration, avoid its long-time use to cause major incident because inside gas concentration is too high, and buffer gas in the buffer chamber 13 also can receive the extrusion to take place to remove.
One end of the outer surface of the extension pipe 804 close to the air inlet pipe 807 is provided with an inflatable air bag 9 through a third electromagnetic valve, the bottom of the inflatable air bag 9 is provided with a distance sensor for detecting the height value of the inflatable air bag 9 and the ground, the inflatable air bag 9 is fixedly connected with the air inlet pipe 807, the outer surface of the extension pipe 804 is provided with an air duct 808, the air duct 808 cannot deform along with the buffer gas, so that the toughness of the air duct 808 is ensured, the obstruction caused by the volume change of the subsequent inflatable air bag 9 is avoided, one end of the air duct 808 is fixedly connected with the bottom of the inner cavity of the buffer cavity 13, the other end of the air duct 808 is communicated with the inflatable air bag 9, therefore, when the extension part 8 moves downwards to squeeze the buffer cavity 13, the buffer gas in the buffer cavity 13 can move to the interior of the inflatable air bag 9 along the air duct 808, the third electromagnetic valve and the first electromagnetic valve are both opened, and the buffer gas in the inflatable air bag 9 can reach the interior of the extension pipe 804 along the third electromagnetic valve, and reach inside detecting cover 702 along extension pipe 804, and then not only can carry extension pipe 804 and detect the inside gas of cover 702 and arrange to waste gas chamber 12 in, and can effectually clear away the coal residue that remains in extension pipe 804 inside, make it retrieve in getting into waste gas chamber 12 along with buffer gas, the gas in the gasbag 9 of aerifing simultaneously can also reverse movement to intake pipe 807 end, make the joint carry out reverse impact at the inlet port of intake pipe 807 tip and the impurity in the through-hole, and then guarantee the flow property of inlet port and through-hole, avoid causing the influence to subsequent detection.
When the concentration value in the detection cover 702 detected by the gas sensor is lower than the set threshold value, the controller controls the first electromagnetic valve and the third electromagnetic valve to be closed, then the buffer gas enters the inflatable airbag 9 to increase the volume of the inflatable airbag 9, the air inlet pipe 807 at the end part can be driven to ascend by virtue of self buoyancy when the volume of the inflatable airbag 9 is increased, further detection of gas concentration of different heights in the mine can be realized, the height value of the inflatable airbag 9 can be detected by virtue of the distance sensor, further, the detection height of the air inlet pipe 807 can be further controlled by controlling the descending height of the electric telescopic rod 10, and the precision measurement precision is ensured.
The sealing rings are arranged on two sides of the partition plate 801 and are in sliding connection with the inner wall of the shell 2, and the sealing rings cannot rub to generate heat, so that the partition plate 801 is stable in sealing when moving inside the shell 2, and the problem of any safety leakage cannot occur.
The top of the waste gas cavity 12 is provided with a recycling box through a fourth electromagnetic valve, the recycling box is mainly used for recycling waste gas in the waste gas cavity 12, when the electric telescopic rod 10 drives the extension part 8 to reach the bottommost part, the volume of the waste gas cavity 12 is the largest, then the internal gas is fully piled, at the moment, the fourth electromagnetic valve is opened, the electric telescopic rod 10 moves reversely to drive the extension part 8 to ascend, then the waste gas in the waste gas cavity 12 can reach the recycling box along the fourth electromagnetic valve to be recycled, if the detection on each height of a certain vertical surface in the mine is finished, the third electromagnetic valve is closed, the pressure in the buffer cavity 13 is reduced, the buffer gas in the inflatable air bag 9 reenters the buffer cavity 13 along the air duct 808 to be stored, and because part of the buffer gas is used for exhausting the extension pipe 804 and the detection part 7, the density of the buffer gas in the buffer cavity 13 is reduced, and the pressure value detected by the pressure sensor is reduced, the controller controls the air supply box 11 to start to supply the buffer gas in the air supply box to the interior of the buffer cavity 13 along the one-way valve, so that the air pressure value of the gas in the buffer cavity 13 is restored to the original value.
Since the gas concentration in the detection part 7 is different from the external gas concentration, the gas value detected by the gas sensor is the gas concentration in the detection part 7, the conversion proportion K exists between the detection part 7 and the external gas concentration, the alarm device is arranged in the detection part 7, when the tile sensor detects that the gas concentration in the detection part 7 is more than the set threshold value, the alarm device is started to alarm, in the scheme, when the first electromagnetic valve is required to be closed in actual use, the induced draft part 6 is started to pump the external gas into the detection part 7, the second electromagnetic valve is closed after the external gas is pumped to a specific time, the gas sensor in the detection part 7 only needs to detect the gas concentration in the detection cover 702, and the external gas concentration can be calculated through the conversion ratio K, when the concentration value detected by the gas sensor is greater than the set threshold value, an alarm is sent out through the alarm device, and then operators are reminded to pay attention to personal safety.
The buffer gas is helium, the main component of the gas is methane, the helium density is less than that of the methane and can not react with the methane, the helium can reduce the gas concentration in the waste gas cavity 12, the helium has stable property and can not explode with the gas reaction, meanwhile, when the third electromagnetic valve is opened, the helium enters the extension pipe 804 along the inflatable air bag 9, the helium can extrude residual gas, impurities and the like in the extension pipe 804 to the inside of the detection part 7 under the action of the self pressure and further extrudes the residual gas and the impurities to the inside of the waste gas cavity 12 along the first electromagnetic valve, as part of the helium is also introduced while the volume of the waste gas cavity 12 is increased, the concentration of the methane gas is reduced and simultaneously is blocked by the helium, the explosion is further avoided, the safety performance of the extension pipe 804 is effectively improved, and the gas in the extension pipe 804 and the detection part 7 can be discharged to the inside of the waste gas cavity 12, the blocking effect on the subsequent detection is effectively avoided.
During the use, at first, drive casing 2 through mobile base 1 and remove to the required position that detects, later extend intake pipe 807 to suitable position, first solenoid valve is closed, the second solenoid valve is opened, the third solenoid valve is closed, the fourth solenoid valve is closed, motor 605 starts to drive driving gear dish 604 and rotates, driving gear dish 604 rotates and drives driven gear dish 603 and rotate, driven gear dish 603 rotates and drives axostylus axostyle 606 and rotates, axostylus axostyle 606 rotates and drives moving blade 602 to rotate, the suction that blade 602 rotates and produces makes outside gas arrive inside extension pipe 804 along intake pipe 807, inside the gas of extension pipe 804 gets into and detects cover 702, can prevent dust to gas with the help of dust cover 806, hinder inside coal powder etc. of outside mine entering extension pipe 804.
After the motor 605 is started for a period of time, the controller motor 605 is closed, and the second electromagnetic valve is also controlled to be closed, at this time, the inside of the detection cover 702 is a closed space, the concentration of the gas inside the detection cover 702 is detected by the gas sensor inside the mounting plate 703, and then the concentration of the external gas can be calculated by the conversion ratio K, which can be obtained by multiple tests and is not repeated herein.
After the detection of the gas concentration at the height is finished, the electric telescopic rod 10 is started to drive the partition plate 801 to descend, the partition plate 801 descends to drive the communicating pipe 803 and the extending pipe 804 at the bottom to descend, meanwhile, the buffer gas in the buffer cavity 13 formed by the partition plate 801 and the shell 2 enters the air guide pipe 808 under the extrusion action of the partition plate 801 at the top, at the moment, the buffer gas reaches the interior of the inflatable airbag 9 along the air guide pipe 808, the third electromagnetic valve between the inflatable airbag 9 and the extending pipe 804 is opened, the second electromagnetic valve in the communicating pipe 803 is opened, the buffer gas in the inflatable airbag 9 enters the interior of the extending pipe 804 along the third electromagnetic valve, the buffer gas can discharge residual gas and coal impurities in the extending pipe 804, the buffer gas further reaches the interior of the detection cover 702, the first electromagnetic valve is opened at the same time, and the gas and the coal impurities in the detection cover 702 can be discharged to the waste coal gas cavity 12 along the first electromagnetic valve at the top of the detection cover 702 by means of the buffer gas Inside, simultaneously along with extension 8's decline, the volume increase of exhaust gas chamber 12, then the gaseous concentration reduction then of gas in the exhaust gas chamber 12 because its volume increase, and buffer gas can further hinder gas harm, prevent its unstable emergence explosion etc. of state, the inside buffer gas of extension pipe 804 can reverse movement to intake pipe 807 end, and then carries out reverse impact to the coal impurity of joint in inlet port and through-hole, make it keep unobstructed, and then can not lead to the fact the hindrance to subsequent detection.
When the gas sensor detects that the concentration of gas in the detection cover 702 is reduced to a set threshold value, the third electromagnetic valve is closed, the electric telescopic rod 10 continues to move downwards to drive the partition plate 801 to extrude the buffer cavity 13, then the buffer gas in the buffer cavity 13 enters the inflatable airbag 9, the volume of the inflatable airbag 9 is increased, as the density of the buffer gas is smaller than that of external air and gas, the buffer airbag 9 can drive the air inlet pipe 807 at the end part to rise, the rising height of the inflatable airbag 9 is detected through the distance sensor, further, different height-dependent gas detection is realized, then the rising height of the air inlet pipe 807 can be effectively controlled through downward movement of the electric telescopic rod 10, the detection precision is high, and the detection range is wide.
Because baffle 801 moves down under electric telescopic handle 10's drive, then extension pipe 804 passes casing 2 and further moves down along with baffle 801 moves down, the outside extension pipe 804 that stretches out of casing 2's length increases, thereby can guarantee effectively that intake pipe 807 does not lead to the fact the hindrance to the normal use of device when rising, and extension pipe 804 and air duct 808 self possess the flexibility of removal, can be along with the synchronous deformation of the rising of intake pipe 807, but air duct 808 can not take place deformation along with buffer gas's entering, consequently can not lead to the fact the hindrance to the increase in volume of inflatable airbag 9, and can not lead to the fact the hindrance to subsequent detection.
When the intake pipe 807 rises to a proper height, the electric telescopic rod 10 stops moving, the buffer gas in the buffer cavity 13 does not enter the inflatable airbag 9 along the air duct 808, the intake pipe 807 at the end part driven by the inflatable airbag 9 is in a stable state, the controller controls the first electromagnetic valve to be closed, the motor 605 starts and repeats the above processes, and can detect different heights, along with the continuous rising of the detection height, the gas concentration continuously rises, the electric telescopic rod 10 drives the partition plate 801 to continuously fall, the volume of the exhaust gas cavity 12 is continuously increased, the volume of the buffer cavity 13 is continuously reduced, the gas in the exhaust gas cavity 12 is increased due to the volume of the exhaust gas cavity 12, and the inside of the buffer gas contains buffer gas with stable properties, the gas concentration in the exhaust gas cavity 12 is not too high, the properties are stable, and major safety accidents can not occur.
After the gas at different heights on the same vertical surface is detected, the controller controls the first electromagnetic valve to be closed, the second electromagnetic valve to be closed, the third electromagnetic valve to be closed, the fourth electromagnetic valve to be opened, the electric telescopic rod 10 drives the partition plate 801 to ascend, when the partition plate 801 ascends, the partition plate 801 and the detection part 7 at the top extrude the gas in the waste gas cavity 12, the gas in the waste gas cavity 12 reaches the interior of the recycling box along the fourth electromagnetic valve, the subsequent treatment of the gas is facilitated, the influence on the external environment concentration is avoided, meanwhile, as the volume in the buffer cavity 13 is increased, the buffer gas pressure in the buffer cavity 13 is reduced, the buffer gas in the inflatable airbag 9 returns to the interior of the buffer cavity 13 along the air guide pipe 808 again, as part of the buffer gas is used for discharging the gas and the impurities in the extension pipe 804 and the detection cover 702, the concentration that atmospheric pressure sensor detected the inside buffer gas of cushion chamber 13 can reduce, and the controller can control the inside buffer gas of tonifying qi case 11 and follow the check valve and get into in cushion chamber 13 and supply qi to original value, and then avoid causing the influence to follow-up.
Meanwhile, when different heights on the same vertical surface are not detected completely, but the electric telescopic rod 10 is lowered to the lowest point, the controller can control the electric telescopic rod 10 to drive the partition plate 801 to move upwards, namely the air supplementing box 11 is opened to inflate the buffer cavity 13, so that the displacement value detected by the distance sensor is not changed, the air inlet pipe 807 is still located at the height before detection, the volume of the inflatable air bag 9 is not changed, the concentration of the buffer gas is further increased into the buffer cavity 13, the gas detected by the air pressure sensor is larger than the original value, and therefore when the electric telescopic rod 10 and the partition plate 801 at the top are restored to the original position, the buffer gas still exists inside the inflatable air bag 9, and the inflatable air bag 9 still drives the air inlet pipe 807 to be located at the original detection height, and further subsequent detection is facilitated.
When the gas concentration detected by the gas sensor is greater than the set threshold value, the alarm device can remind an operator to escape in time, and the safety performance is improved.
The device has realized the detection to the gas concentration of co-altitude not in the same vertical plane effectively, it is more accurate to detect data, it is higher to detect the precision, detection range is wider, the requirement when having satisfied actual production detection effectively, and correspond the volume of adjusting exhaust gas chamber 12 when changing the detection height of intake pipe 807, and then reduce and retrieve to the gas concentration in exhaust gas chamber 12, and the security performance of device is further guaranteed to cooperation buffer gas's stability, can also exhaust the impurity removal to extension pipe 804 and detection cover 702 inside when constantly changing detection height, improve the cleaning performance of device, avoid causing the hindrance to subsequent detection, further improve and detect the precision, high durability and convenient use, the detection range is wide, the security performance is secure.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The underground gas concentration monitoring equipment comprises a shell and is characterized in that a controller is arranged on one side of the shell, an electric telescopic rod is arranged at the bottom of an inner cavity of the shell, an extending part is arranged at the top of the electric telescopic rod, a detecting part is arranged at the top of the extending part, and an air inducing part is arranged inside the detecting part;
the top of the detection part and the inner cavity of the shell form a waste gas cavity through a first electromagnetic valve, the bottom of the extension part and the inner cavity of the shell form a buffer cavity, buffer gas with density smaller than that of gas and stable property is arranged in the buffer cavity, an air pressure sensor is arranged in the buffer cavity and used for detecting the air pressure value in the buffer cavity, and an air supplement box is arranged on one side of the shell through a one-way valve;
the extension part comprises a partition plate in sealing sliding connection with the inner wall of the shell, a communication pipe is communicated with the center of the bottom of the partition plate through a second electromagnetic valve, one end, far away from the partition plate, of the communication pipe is communicated with an extension pipe penetrating through the bottom of the shell, the other end of the extension pipe is communicated with an air inlet pipe, an inflatable air bag is arranged on the outer surface of the extension pipe and close to the end of the air inlet pipe through a third electromagnetic valve, a distance sensor is arranged at the bottom of the inflatable air bag and used for detecting the height value of the inflatable air bag, the inflatable air bag is fixedly connected with the air inlet pipe, an air guide pipe is arranged on the outer surface of the extension pipe, one end of the air guide pipe is fixedly connected with the bottom of the inner wall of the buffer cavity, and the other end of the air guide pipe is communicated with the inflatable air bag;
the detection part comprises a detection cover detachably connected with the top of the partition plate, mounting plates for mounting the gas sensor are arranged on two sides of the top of an inner cavity of the detection cover, and a support fixedly connected with bolts on the inner wall of the detection cover is arranged on one side, opposite to the mounting plates;
after the detection of a certain height in the mine is finished, the electric telescopic rod is started to drive the partition plate to descend, the volume in the buffer cavity is reduced, the buffer gas enters the inflatable air bag along the gas guide pipe, the controller controls the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to be opened, and the buffer gas in the inflatable air bag carries the gas to reach the waste gas cavity along the extension pipe and the detection cover; when the gas concentration detected by the gas sensor is lower than a set threshold value, the controller controls the first electromagnetic valve and the third electromagnetic valve to be closed, the volume of the inflatable air bag is continuously increased, and the air inlet pipe at the end part is driven to ascend to a required height.
2. The underground gas concentration monitoring device according to claim 1, wherein ports for communicating with the inside of the casing are formed in both sides of the top of the casing, cover plates which are matched with the ports and fixedly connected with bolts at the top of the casing are arranged on both sides of the top of the casing and at positions of the ports, and handles are arranged on the tops of the two cover plates.
3. The underground gas concentration monitoring device according to claim 1, wherein two sides of the bottom of the detection cover are connected with the top of the partition plate through sealing gaskets, sealing rings are arranged on two sides of the partition plate, and the sealing rings are connected with the inner wall of the shell in a sliding mode.
4. The underground gas concentration monitoring device as claimed in claim 1, wherein a plurality of air inlet holes are formed in the outer wall of the air inlet pipe, a dust cover is arranged outside the air inlet pipe, through holes corresponding to the air inlet holes are formed in the outer surface of the dust cover, and a plurality of groups of air holes are formed in the mounting plate.
5. The underground mine gas concentration monitoring device according to claim 1, wherein the buffer gas is helium.
6. The underground gas concentration monitoring device according to claim 1, wherein the air inducing portion comprises a support frame fixedly connected with an inner wall of the detection cover, a shaft lever is rotatably connected to the top of the support frame, and a plurality of blades are arranged on an outer ring of the shaft lever.
7. The underground gas concentration monitoring device according to claim 6, wherein a driven gear disc is sleeved on the top of the outer ring of the shaft rod, a motor is installed on one side of the top of the detection cover, an output shaft of the motor penetrates through the top of the detection cover through a shaft sleeve and is connected with a driving gear disc which is connected with the driven gear disc through clamping tooth meshing, a protection cover is arranged inside the detection cover, and the driven gear disc and the driving gear disc are both located inside the protection cover.
8. The underground gas concentration monitoring device according to claim 1, wherein a movable base is arranged at the bottom of the shell, and the controller electrically controls each electrical element.
9. The underground gas concentration monitoring device according to claim 1, wherein a recovery tank is arranged at the top of the waste gas cavity through a fourth electromagnetic valve, and the recovery tank is mainly used for recovering waste gas in the waste gas cavity.
10. The underground gas concentration monitoring device according to claim 1, wherein an alarm device is arranged in the detection part, and when the tile sensor detects that the gas concentration in the detection part is greater than a set threshold value, the alarm device is started to give an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200962.6A CN114562333A (en) | 2022-03-03 | 2022-03-03 | Mine underground gas concentration monitoring equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200962.6A CN114562333A (en) | 2022-03-03 | 2022-03-03 | Mine underground gas concentration monitoring equipment |
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| CN114562333A true CN114562333A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210200962.6A Pending CN114562333A (en) | 2022-03-03 | 2022-03-03 | Mine underground gas concentration monitoring equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935371A (en) * | 2022-06-20 | 2022-08-23 | 江西科技学院 | Mechanical property safety monitoring system about stressed plate |
| CN116519882A (en) * | 2023-04-29 | 2023-08-01 | 管川 | Chemical industry park air pollution monitoring device and method |
-
2022
- 2022-03-03 CN CN202210200962.6A patent/CN114562333A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935371A (en) * | 2022-06-20 | 2022-08-23 | 江西科技学院 | Mechanical property safety monitoring system about stressed plate |
| CN114935371B (en) * | 2022-06-20 | 2024-06-04 | 江西科技学院 | Mechanical property safety monitoring system for stressed plate |
| CN116519882A (en) * | 2023-04-29 | 2023-08-01 | 管川 | Chemical industry park air pollution monitoring device and method |
| CN116519882B (en) * | 2023-04-29 | 2024-02-13 | 管川 | Chemical industry park air pollution monitoring device and method |
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