CN114755325A - Mine gas inspection system, control method and electronic equipment - Google Patents
Mine gas inspection system, control method and electronic equipment Download PDFInfo
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- CN114755325A CN114755325A CN202210322547.8A CN202210322547A CN114755325A CN 114755325 A CN114755325 A CN 114755325A CN 202210322547 A CN202210322547 A CN 202210322547A CN 114755325 A CN114755325 A CN 114755325A
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- 238000007689 inspection Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 40
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 30
- 239000001569 carbon dioxide Substances 0.000 claims description 30
- 230000015654 memory Effects 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 description 12
- 238000004806 packaging method and process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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Abstract
The invention discloses a mine gas inspection system, a control method and electronic equipment. The system comprises: the gas detection device comprises a plurality of gas inlet pipes, one or more groups of valve groups, one or more gas detectors and a controller, wherein the air inlet of each gas inlet pipe is arranged at a sampling point of a roadway to be detected, the air outlet of one gas inlet pipe is communicated with the air inlet of a control valve of the valve group, the air outlets of all the control valves of one group of valve groups are communicated with the air inlet of one gas detector, the output end of the gas detector is in communication connection with the input end of the controller, the output end of the controller is in communication connection with the control ends of all the control valves of all the valve groups, and the controller controls the control valves to be opened or closed. According to the invention, the intelligent inspection of the mine gas is realized by sequentially inspecting each air inlet pipe. All gas inspection except the excavation working face is finished by being handed to the mine gas inspection system, so that the number of gas inspectors and the gas inspection workload are greatly reduced.
Description
Technical Field
The invention relates to the technical field of coal mine correlation, in particular to a mine gas inspection system, a control method and electronic equipment.
Background
The gas inspector must carry a portable optical methane detector and a portable methane detection alarm.
All the mining working faces, chambers, the arrangement places of the electromechanical equipment in use and the places where personnel operate should be brought into the inspection range.
The gas inspector must execute the gas patrol inspection system and the request report system and fill in the gas inspection class report seriously, each inspection result must be recorded into the gas inspection class report manual and the record board of the inspection site, and the field worker is informed, and when the methane concentration exceeds the regulation of the specification, the gas inspector has the authority to order the field worker to stop working and withdraw to the safe site.
The method for detecting the gas in the roadway by the gas detector comprises the steps of detecting the gas at the upper part of the roadway and detecting the carbon dioxide at the lower part of the roadway. When the gas is detected, the detection is carried out for three times, and the maximum value of the three times of detection is taken; when detecting carbon dioxide, detect tunnel lower part gas earlier, detect the mist of gas and carbon dioxide again, subtract gas concentration with mist concentration, multiply by 0.955 again, obtain carbon dioxide concentration, also need detect three times, take the maximum value.
Therefore, the existing gas inspection method needs to carry out manual inspection, has large workload, more personnel and easy error, and cannot keep pace with the current development situation of an intelligent mine.
Disclosure of Invention
In view of the above, it is necessary to provide a mine gas inspection system, a control method and an electronic device, aiming at the technical problem that the existing gas inspection method needs to be manually inspected.
The invention provides a mine gas inspection system, comprising: a plurality of intake pipes, a set of or multiunit valves, one or more gas calibrator and controller, each the air intake setting of intake pipe is at a sampling point in the tunnel that awaits measuring, one the air outlet of intake pipe with the air intake intercommunication of a control flap of valves, all of a set of valves the air outlet of control flap with one the air intake intercommunication of gas calibrator, the output of gas calibrator with the input communication connection of controller, the output of controller and the control end communication connection of all control flaps of all valves, the controller control opening or closing of control flap.
The controller is characterized by further comprising one or more packaging boxes, wherein one group of valve groups are accommodated in one packaging box, a sealed internal air pressure sensor for detecting the air pressure in the packaging box is further arranged in each packaging box, and the output ends of the sealed internal air pressure sensors are in communication connection with the input end of the controller.
Furthermore, the air outlet of the control valve is communicated with the air inlet of the gas calibrator through an air outlet pipe, a controllable reversing valve and a bypass pipe are arranged on the air outlet pipe, a first air port of the controllable reversing valve is communicated with the air outlet pipe, a second air port of the controllable reversing valve is communicated with the air inlet of the gas calibrator, a third air port of the controllable reversing valve is communicated with one end of the bypass pipe, the other end of the bypass pipe is communicated with the carbon dioxide absorption tank, the control end of the controllable reversing valve is in communication connection with the output end of the controller, and the controller controls the first air port of the controllable reversing valve to be communicated with the second air port or controls the second air port of the controllable reversing valve to be communicated with the third air port.
Further, the gas detector is a gas chromatograph or a digital optical interference gas detector.
Furthermore, the gas detector also comprises one or more pumps which are in communication connection with the controller, the air outlets of all the control valves of the group of valve banks are communicated with the air inlet of one pump, and the air outlet of the pump is communicated with the air inlet of the gas detector.
Furthermore, a barometer in communication connection with the controller is arranged at the connection position of the air inlet of the pump and each control valve.
Further, the air inlet of the air inlet pipe is fixed on the sampling point or can move within a preset range taking the sampling point as a base point.
The invention provides a control method of the mine gas inspection system, which comprises the following steps:
circularly opening the control valves in the valve groups, and only opening one control valve in the same group of valve groups each time;
and acquiring gas information output by the gas calibrator, and executing an alarm operation if the gas information exceeds a preset threshold value.
Further, an air outlet of the control valve of the mine gas detection system is communicated with an air inlet of the gas detector through an air outlet pipe, a controllable reversing valve and a bypass pipe are arranged on the air outlet pipe, a first air port of the controllable reversing valve is communicated with the air outlet pipe, a second air port of the controllable reversing valve is communicated with the air inlet of the gas detector, a third air port of the controllable reversing valve is communicated with one end of the bypass pipe, the other end of the bypass pipe is communicated with a carbon dioxide absorption tank, a control end of the controllable reversing valve is in communication connection with an output end of the controller, the controller controls the first air port of the controllable reversing valve to be communicated with the second air port or controls the second air port of the controllable reversing valve to be communicated with the third air port, and the method further comprises the following steps:
controlling the controllable reversing valve to communicate the first air port and the second air port;
acquiring the concentration of the gas output by the gas calibrator at the moment as the concentration of the mixed gas of methane and carbon dioxide;
controlling the controllable reversing valve to communicate the second air port and the third air port;
after a preset time, acquiring the concentration of the gas output by the gas calibrator at the moment as the concentration of methane gas;
and calculating the concentration of the carbon dioxide gas according to the concentration of the mixed gas and the concentration of the methane gas.
The present invention provides an electronic device, including:
at least one processor; and (c) a second step of,
a memory communicatively coupled to at least one of the processors; wherein,
the memory stores instructions executable by at least one of the processors to enable at least one of the processors to perform a method of controlling a mine gas inspection system as hereinbefore described.
According to the invention, the intelligent inspection of the mine gas is realized by sequentially inspecting each air inlet pipe. All gas inspection except the excavation working face is finished by being handed to the mine gas inspection system, so that the number of gas inspectors and the gas inspection workload are greatly reduced. And by establishing a perfect air leakage self-checking system, the reliability of sampling is ensured.
Drawings
FIG. 1 is a schematic diagram of a system for inspecting mine gas in accordance with the present invention;
FIG. 2 is a schematic view of the connection between the outlet duct and the bypass duct according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for controlling a mine gas inspection system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an electronic device according to the present invention.
Description of the marks
1-laneway to be tested; 2, an air inlet pipe; 3-a valve group; 31-a control valve; 4-gas detector; 5-a controller; 6-packaging the box; 7-sealing the internal gas pressure sensor; 8-air outlet pipe; 81-a controllable reversing valve; 82-a bypass pipe; 83-a carbon dioxide absorption tank; 9-a pump; 10-a communication line; 11-sealing the external air pressure sensor.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 is a schematic diagram of a system of a mine gas inspection system according to the present invention, which includes: a plurality of intake pipe 2, a set of or multiunit valves 3, one or more gas examination ware 4 and controller 5, each the air intake setting of intake pipe 2 is at a sampling point of the tunnel 1 that awaits measuring, one the air outlet of intake pipe 2 with the air intake intercommunication of a control flap 31 of valves 3, all of a set of valves 3 the air outlet of control flap 31 with one the air intake intercommunication of gas examination ware 4, the output of gas examination ware 4 with the input communication connection of controller 5, the output of controller 5 and all control flap 31's of all valves 3 control end communication connection, controller 5 control opening or closing of control flap 31.
Specifically, each sampling point is arranged at each point to be measured of the roadway 1 to be measured, such as a roadway top and bottom plate. The air inlet pipe 2 is preferably a sampling hose. And air inlets of the air inlet pipe 2 are arranged at each sampling point. The other end of the air inlet pipe 2 is collected to the valve group 3 through a bundle pipe. The valve block 3 is preferably a set of control valves, each set comprising a plurality of control valves 31. The other end of the control valve 31 is connected with the gas detector 4, and the output end of the gas detector 4 is connected with the controller 5. The control valve 31 is preferably a solenoid-operated valve. Is remotely and automatically controlled by the controller 5. The controller 5 is preferably a centralized control computer and may be located at a downhole substation and/or at a surface central station. The controller 5 controls the opening sequence and the opening time of each control valve 31, the gas detector 4 is used for detecting the opening sequence and the opening time, a detection value is uploaded to the controller 5, and the automatic sampling of the sequence of each sampling point is realized.
According to the invention, the intelligent inspection of the mine gas is realized by sequentially inspecting each air inlet pipe. All gas inspection except the excavation working face is finished by being handed to the mine gas inspection system, so that the number of gas inspectors and the gas inspection workload are greatly reduced. And by establishing a perfect air leakage self-checking system, the reliability of sampling is ensured.
Fig. 1 and 2 show a mine gas inspection system according to an embodiment of the present invention, which includes: a plurality of air inlet pipes 2, a group or a plurality of groups of valve sets 3, one or a plurality of gas detectors 4, a controller 5, one or a plurality of packaging boxes 6, one or a plurality of pumps 9 in communication connection with the controller 5, wherein the air inlet of each air inlet pipe 2 is arranged at a sampling point of a roadway 1 to be detected, the air outlet of one air inlet pipe 2 is communicated with the air inlet of a control valve 31 of the valve set 3, the air outlets of all the control valves 31 of one group of valve sets 3 are communicated with the air inlet of one gas detector 4, the output end of the gas detector 4 is in communication connection with the input end of the controller 5, the output end of the controller 5 is in communication connection with the control ends of all the control valves 31 of all the valve sets 3, the controller 5 controls the control valves 31 to be opened or closed, one group of valve sets 3 is arranged in one packaging box 6, each packaging box 6 is also internally provided with a sealed internal air pressure sensor 7 for detecting the internal air pressure of the packaging box 6, the output ends of the sealed internal air pressure sensors 7 are in communication connection with the input end of the controller 5, and the gas detector 4 is a gas chromatograph or a digital optical interference gas detector;
the air outlets of all the control valves 31 of one group of valve groups 3 are communicated with the air inlet of one pump 9, the air outlet of the pump 9 is communicated with the air inlet of the gas detector 4, a barometer in communication connection with the controller 5 is arranged at the joint of the air inlet of the pump 9 and each control valve 31, and the air inlet of the air inlet pipe 2 is fixed at the sampling point or can move within a preset range taking the sampling point as a base point;
the air outlet of the control valve 31 is communicated with the air inlet of the gas detector 4 through an air outlet pipe 8, a controllable reversing valve 81 and a bypass pipe 82 are arranged on the air outlet pipe 8, a first air port of the controllable reversing valve 81 is communicated with the air outlet pipe 8, a second air port of the controllable reversing valve 81 is communicated with the air inlet of the gas detector 4, a third air port of the controllable reversing valve 81 is communicated with one end of the bypass pipe 82, the other end of the bypass pipe 82 is communicated with a carbon dioxide absorption tank 83, a control end of the controllable reversing valve 81 is in communication connection with the output end of the controller 5, and the controller 5 controls the first air port and the second air port of the controllable reversing valve 81 to be communicated or controls the second air port and the third air port of the controllable reversing valve 81 to be communicated.
Specifically, the mine gas inspection system of this embodiment adopts the technical means that beam tube monitoring and remote control combine together, mainly includes: the system comprises a gas sampling system, a gas conveying system, a gas monitoring station, a gas pressure detection coefficient, a gas circuit system self-checking system, a centralized control system, a detection result field display, a voice prompt, an overrun alarm and the like.
Gas sampling system
According to the sampling requirement of the optical interference gas inspection, each sampling point is arranged on each point to be measured of the roadway 1 to be measured, such as a roadway top and bottom plate. The air inlet pipe 2 is preferably a sampling hose. And installing air inlets of the air inlet pipe 2 at each sampling point. The other end of the air inlet pipe 2 is collected to the valve group 3 through a bundle pipe. The valve block 3 is preferably a set of control valves, each set comprising a plurality of control valves 31. The other end of the control valve 31 is connected with the gas detector 4, and the output end of the gas detector 4 is connected with the controller 5. The control valve 31 is preferably a solenoid-operated valve. Is remotely and automatically controlled by the controller 5. The controller 5 is preferably a centralized computer and may be located at a downhole substation and/or at a surface central station. The controller 5 controls the opening sequence and the opening time of each control valve 31, the gas detector 4 is used for detecting the opening sequence and the opening time, a detection value is uploaded to the controller 5, and the automatic sampling of the sequence of each sampling point is realized.
The inlet of the inlet pipe 2 may be fixed at the sampling point. Or the air inlet of the intake pipe 2 may be movable within a preset range with the sampling point as a base point. For example, the air intake duct 2 is moved by a patrol person. Or a guide rail is arranged at the sampling point, and the sampling device can move horizontally and vertically along the guide rail. An air inlet pipe 2 is installed on the apparatus. The middle section of the air inlet pipe 2 is provided with a drying and dust removing medicine tank. The motion of the mobile sampling device is automatically controlled remotely by the controller 5 (the underground substation or the ground central station is automatically controlled according to a program).
A plurality of intake pipes 2 are connected with an air outlet pipe 8 through a control valve 31, and a pump 9 and an electromagnetic valve for sampling are arranged on the air outlet pipe 8. The pump 9 and the solenoid valve are also automatically controlled remotely.
Gas positive pressure conveying system
An appropriate number of air pumping stations including pumps 9 are established downhole as close as possible to the sampling point. The air inlet end of the pump 9 is connected with each sampling point through a multi-way control valve 31 and a multi-way air inlet pipe 2, and the multi-way control valve 31 is used as a group of valve groups 3 and is controlled by a controller 5 through a program.
And a pump 9 of the gas pump station conveys the collected gas to a gas detector 4 of the gas monitoring station through an air outlet pipe 8. The pump 9 is preferably an air pump. The position of the pump 9 is as close to the sampling point as possible, one side of the delivery outlet of the pump 9 is in positive pressure delivery, gas leakage is prevented through positive pressure delivery, and the gas component delivered to the monitoring station is ensured to be completely the same as the gas component at the acquisition point. The outlet duct 8 is preferably a bundle duct.
Gas monitoring station
It is composed of gas chromatograph or digital optical interference gas detector and matched centralized control computer. The gas chromatograph or the digital light interference gas detector is the gas detector 4. The gas monitoring station comprises an underground substation and a ground central station. The underground substation is connected with the ground central station through a communication network.
Substation detection or ground central station detection.
An air inlet of a gas detector 4 of the substation (or the ground central station) is connected with an air outlet pipe 8 at the outlet of a pump 9, and the concentration of the gas collected in the air pipe 8 is detected.
As shown in fig. 2, when the air outlet pipe 8 is connected to the digital optical interference gas detector, a controllable reversing valve 81 and a bypass pipe 82 are arranged on the air outlet pipe 8, a first air port of the controllable reversing valve 81 is communicated with the air outlet pipe 8, a second air port of the controllable reversing valve 81 is communicated with an air inlet of the gas detector 4, a third air port of the controllable reversing valve 81 is communicated with one end of the bypass pipe 82, the other end of the bypass pipe 82 is communicated with a carbon dioxide absorption tank 83, a control end of the controllable reversing valve 81 is in communication connection with an output end of the controller 5, and the controller 5 controls the first air port and the second air port of the controllable reversing valve 81 to be communicated or controls the second air port and the third air port of the controllable reversing valve 81 to be communicated. The controllable directional valve 81 is preferably a solenoid directional valve. When the concentration of the carbon dioxide is detected, the controller 5 controls the controllable reversing valve 81 to communicate the air outlet pipe 8 with the gas detector 4, the concentration of the mixed gas of methane and carbon dioxide is detected by the gas detector 4, then controls the controllable reversing valve 81 to disconnect the air outlet pipe 8 from the gas detector 4, communicates the bypass pipe 82 with the gas detector 4, and absorbs the carbon dioxide in the mixed gas through the carbon dioxide absorption tank 83. After a preset time, the detection result of the gas detector 4 is the methane concentration. The carbon dioxide concentration is obtained by subtracting the methane concentration from the mixed gas concentration and multiplying by a predetermined coefficient, for example, 0.955.
The gas detector 4 is preferably a digital optical interference gas detector. The digital light interference gas detector adopts a laser light source to replace a white light source, so that interference fringes are thinned. And (3) reading the interference fringes by adopting a digital imaging technology and an image recognition technology.
An air pressure detection system.
Under the condition of stopping the pump, the air pressure (including the inside of the seal) of each underground place, including the air pressure of the seal inside air pressure sensor 7 and the seal outside air pressure sensor 11 in the packaging box 6, is transmitted to the ground central station through the beam tube and the switch control and communication lines 10 of each electromagnetic valve group in the middle.
The air pressure of each underground place is transmitted to a ground central station through a beam pipe, and the differential pressure between each place and the ground surface is read by a differential pressure meter of the ground central station. The wind pressure of each place is calculated by the centralized control computer, and a ventilation pressure energy diagram and the ventilation resistance of each roadway are given.
Gas circuit system self-checking system.
And detecting air leakage of the joint. The joints of the air inlet pipe 2 and the air outlet pipe 8 and the control valve 31 are positioned in the valve group 3. The valve group 3 and the pipe joint are packaged in the closed cavity of the packaging box 6, the characteristic that the air pressure in the closed cavity can be changed by air leakage of the joint or the valve is utilized, and the air pressure in the closed cavity is detected by the air pressure sensor 7 in the closed cavity, so that whether the joint or the valve leaks air is detected.
And gas leakage between the pump and the valve is detected. A digital barometer such as an optical fiber pressure sensor is installed on each intake pipe 2 on the suction side of the pump 9, and an alarm is given when the pressure in the intake pipe 2 in the suction state and the pressure in the intake pipe 2 in the other non-suction state are abnormal.
The pump 9 may be an air pump. The motor of the air pump can be arranged outside the cavity, and the connecting shaft of the air pump and the motor is provided with enough sealing at the position of penetrating through the sealing cavity shell of the packaging box 6.
If the space in the cavity is larger, such as more than 0.5m3, a gas sensor is arranged in the cavity.
And (4) a centralized control system.
The controller 5 controls the control valves 31 of the downhole air inlet pipe 2 in sequence according to the program setting.
And conveying the gas monitoring result to the underground substation and each acquisition point through optical fibers or 4G, and realizing monitoring result display, voice prompt, over-limit audible and visual alarm and voice command at each acquisition point.
And monitoring results are uploaded to a mine dispatching room, ventilation operators on duty, mine deputy and general workers.
As an example, if a mine has 900 gas measuring points, the whole mine has 10 gas inspection workers per mine, and the whole mine is equipped with 45 gas inspection workers, the workload is still large. When the mine gas inspection system is adopted, a whole mine only needs to be provided with 4 working face full-time gas inspectors.
In the embodiment, all gas inspection except the excavation working face is completed by the system, so that the number of gas inspectors and the gas inspection workload are greatly reduced. And the reliability of sampling is ensured through a perfect air leakage self-checking system. And a gas chromatograph or a high-precision digital optical interference methane calibrator is adopted to ensure the accuracy and the reliability of the result.
Fig. 3 is a flowchart illustrating a control method of the mine gas inspection system according to the present invention, which includes:
step S301, circularly opening the control valves 31 in the valve groups 3, and only opening one control valve 31 in the same group of valve groups 3 each time;
step S302, obtaining the gas information output by the gas calibrator 4, and if the gas information exceeds a preset threshold, executing an alarm operation.
Specifically, the control method of the present invention can be applied to the controller 5 of the mine gas inspection system.
And S301, sequentially controlling the control valves 31 on the underground air inlet pipe 2 according to the program setting to realize sequential collection of the gas.
And S302, transmitting the gas monitoring result to the underground substation and each acquisition point through optical fibers or 4G, and realizing monitoring result display, voice prompt, over-limit acousto-optic alarm and voice command at each acquisition point. And monitoring results are uploaded to a mine dispatching room, ventilation operators on duty, mine deputy and general workers. The alert operation includes, but is not limited to, a voice prompt and/or an over-limit audible and visual alert.
According to the invention, the intelligent inspection of the mine gas is realized by sequentially inspecting each air inlet pipe. All gas inspection except the excavation working face is finished by being handed to the mine gas inspection system, so that the number of gas inspectors and the gas inspection workload are greatly reduced.
In one embodiment, the air outlet of the control valve 31 of the mine gas detection system is communicated with the air inlet of the gas detector 4 through an air outlet pipe 8, a controllable reversing valve 81 and a bypass pipe 82 are arranged on the air outlet pipe 8, a first air port of the controllable reversing valve 81 is communicated with the air outlet pipe 8, the second air port of the controllable reversing valve 81 is communicated with the air inlet of the gas detector 4, the third air port of the controllable reversing valve 81 is communicated with one end of the bypass pipe 82, the other end of the bypass pipe 82 is communicated with a carbon dioxide absorption tank 83, the control end of the controllable reversing valve 81 is communicated with the output end of the controller 5, the controller 5 controls the first air port and the second air port of the controllable reversing valve 81 to be communicated or controls the second air port and the third air port of the controllable reversing valve 81 to be communicated, and the method further comprises the following steps:
controlling the controllable reversing valve 81 to communicate the first air port and the second air port;
acquiring the concentration of the gas output by the gas calibrator 4 at this time as the concentration of the mixed gas of methane and carbon dioxide;
controlling the controllable reversing valve 81 to communicate the second air port and the third air port;
after a preset time, acquiring the concentration of the gas output by the gas calibrator 4 at the moment as the concentration of methane gas;
and calculating the concentration of the carbon dioxide gas according to the concentration of the mixed gas and the concentration of the methane gas.
Specifically, a controllable reversing valve 81 and a bypass pipe 82 are arranged on the air outlet pipe 8, a first air port of the controllable reversing valve 81 is communicated with the air outlet pipe 8, a second air port of the controllable reversing valve 81 is communicated with an air inlet of the gas detector 4, a third air port of the controllable reversing valve 81 is communicated with one end of the bypass pipe 82, the other end of the bypass pipe 82 is communicated with a carbon dioxide absorption tank 83, a control end of the controllable reversing valve 81 is in communication connection with an output end of the controller 5, and the controller 5 controls the first air port of the controllable reversing valve 81 to be communicated with the second air port or controls the second air port of the controllable reversing valve 81 to be communicated with the third air port. The controllable directional valve 81 is preferably a solenoid directional valve. When the concentration of the carbon dioxide is detected, the controller 5 controls the controllable reversing valve 81 to communicate the air outlet pipe 8 with the gas detector 4, the concentration of the mixed gas of methane and carbon dioxide is detected by the gas detector 4, then controls the controllable reversing valve 81 to disconnect the air outlet pipe 8 from the gas detector 4, communicates the bypass pipe 82 with the gas detector 4, and absorbs the carbon dioxide in the mixed gas through the carbon dioxide absorption tank 83. After a preset time, the detection result of the gas detector 4 is the methane concentration. The carbon dioxide concentration is obtained by subtracting the methane concentration from the mixed gas concentration and multiplying by a predetermined factor, for example, 0.955. This example enables separate detection of methane concentration and carbon dioxide.
Fig. 4 is a schematic diagram of a hardware structure of an electronic device according to the present invention, which includes:
at least one processor 401; and the number of the first and second groups,
a memory 402 communicatively coupled to at least one of the processors 401; wherein,
the memory 402 stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the method of controlling a mine gas inspection system as described above.
One processor 401 is illustrated in fig. 4.
The electronic device may further include: an input device 403 and a display device 404.
The processor 401, the memory 402, the input device 403, and the display device 404 may be connected by a bus or other means, and are illustrated as being connected by a bus.
The memory 402, which is a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the control method of the mine gas inspection system in the embodiment of the present application, for example, the method flow shown in fig. 3. The processor 401 executes various functional applications and data processing by running the nonvolatile software programs, instructions and modules stored in the memory 402, so as to implement the control method of the mine gas inspection system in the above embodiment.
The memory 402 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of a control method of the mine gas inspection system, and the like. Further, the memory 402 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 402 optionally includes memory located remotely from the processor 401, and these remote memories may be connected via a network to a device that performs the control method of the mine gas inspection system. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 403 may receive input from a user click and generate signal inputs related to user settings and functional control of the control method of the mine gas inspection system. The display device 404 may include a display screen or the like.
The method of controlling the mine gas inspection system of any of the above method embodiments is performed when the one or more modules are stored in the memory 402 and executed by the one or more processors 401.
According to the invention, the intelligent inspection of the mine gas is realized by sequentially inspecting each air inlet pipe. All gas inspection except the excavation working face is finished by being handed to the mine gas inspection system, so that the number of gas inspectors and the gas inspection workload are greatly reduced.
An embodiment of the present invention provides a storage medium storing computer instructions for performing all the steps of the control method of a mine gas inspection system as described above when the computer instructions are executed by a computer.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A mine gas inspection system, comprising: a plurality of intake pipe (2), a set of or multiunit valves (3), one or more gas examination ware (4) and controller (5), each the air intake setting of intake pipe (2) is at a sampling point of the tunnel (1) that awaits measuring, one the air outlet of intake pipe (2) with the air intake intercommunication of a control flap (31) of valves (3), all of a set of valves (3) the air outlet and one of control flap (31) the air intake intercommunication of gas examination ware (4), the output of gas examination ware (4) with the input communication connection of controller (5), the output of controller (5) and the control end communication connection of all control flap (31) of all valves (3), controller (5) control opening or closing of control flap (31).
2. The mine gas inspection system of claim 1, further comprising one or more enclosures (6), a set of said valve blocks (3) being disposed within one of said enclosures (6), each of said enclosures (6) further having disposed therein a seal interior gas pressure sensor (7) for sensing the interior gas pressure of the enclosure (6), the output of a plurality of said seal interior gas pressure sensors (7) being in communication with the input of said controller (5).
3. The mine gas inspection system of claim 1, wherein an air outlet of the control valve (31) is communicated with an air inlet of the gas detector (4) through an air outlet pipe (8), a controllable reversing valve (81) and a bypass pipe (82) are arranged on the air outlet pipe (8), a first air port of the controllable reversing valve (81) is communicated with the air outlet pipe (8), a second air port of the controllable reversing valve (81) is communicated with the air inlet of the gas detector (4), a third air port of the controllable reversing valve (81) is communicated with one end of the bypass pipe (82), the other end of the bypass pipe (82) is communicated with a carbon dioxide absorption tank (83), a control end of the controllable reversing valve (81) is communicated with an output end of the controller (5), and the controller (5) controls the first air port and the second air port of the controllable reversing valve (81) to be communicated or controls the second air port of the controllable reversing valve (81) The tuyere is communicated with the third tuyere.
4. The mine gas inspection system of claim 1, wherein the gas detector (4) is a gas chromatograph or a digital optical interference gas detector.
5. The mine gas inspection system of claim 1, further comprising one or more pumps (9) communicatively connected to the controller (5), wherein the outlet ports of all of the control valves (31) of a set of valve banks (3) are in communication with an inlet port of one of the pumps (9), and wherein the outlet port of the pump (9) is in communication with an inlet port of the gas verifier (4).
6. The mine gas inspection system of claim 5, wherein a barometer is provided at the connection of the air inlet of the pump (9) to each of the control valves (31) in communication with the controller (5).
7. The mine gas inspection system of claim 1, wherein the air inlet of the air inlet pipe (2) is fixed at the sampling point or is movable within a preset range with the sampling point as a base point.
8. A method of controlling the mine gas inspection system of any one of claims 1 to 7, comprising:
circularly opening the control valves (31) in the valve groups (3), and only opening one control valve (31) in the same valve group (3) when opening each time;
and acquiring gas information output by the gas calibrator (4), and executing an alarm operation if the gas information exceeds a preset threshold value.
9. The control method of the mine gas inspection system according to claim 8, wherein an air outlet of the control valve (31) of the mine gas detection system is communicated with an air inlet of the gas detector (4) through an air outlet pipe (8), a controllable reversing valve (81) and a bypass pipe (82) are arranged on the air outlet pipe (8), a first air port of the controllable reversing valve (81) is communicated with the air outlet pipe (8), a second air port of the controllable reversing valve (81) is communicated with the air inlet of the gas detector (4), a third air port of the controllable reversing valve (81) is communicated with one end of the bypass pipe (82), the other end of the bypass pipe (82) is communicated with a carbon dioxide absorption tank (83), a control end of the controllable reversing valve (81) is communicated with an output end of the controller (5), and the controller (5) controls the first air port of the controllable reversing valve (81) to be communicated with the second air port or controls the bypass pipe (81) to be communicated with the second air port Controlling the second port of the controllable reversing valve (81) to be communicated with the third port, and the method further comprises the following steps:
controlling the controllable reversing valve (81) to communicate the first air port and the second air port;
acquiring the concentration of the gas output by the gas detector (4) at the moment as the concentration of the mixed gas of methane and carbon dioxide;
controlling the controllable reversing valve (81) to communicate the second air port and the third air port;
after a preset time, acquiring the concentration of the gas output by the gas detector (4) at the moment as the concentration of methane gas;
and calculating the concentration of the carbon dioxide gas according to the concentration of the mixed gas and the concentration of the methane gas.
10. An electronic device, comprising:
at least one processor; and (c) a second step of,
a memory communicatively coupled to at least one of the processors; wherein,
the memory stores instructions executable by at least one of the processors to enable the at least one processor to perform the method of controlling the mine gas inspection system of any one of claims 8 to 9.
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| CN202210322547.8A CN114755325A (en) | 2022-03-30 | 2022-03-30 | Mine gas inspection system, control method and electronic equipment |
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| CN202210322547.8A CN114755325A (en) | 2022-03-30 | 2022-03-30 | Mine gas inspection system, control method and electronic equipment |
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