CN114876577A - Mine ventilation explosion-proof early warning control structure - Google Patents
Mine ventilation explosion-proof early warning control structure Download PDFInfo
- Publication number
- CN114876577A CN114876577A CN202210690710.6A CN202210690710A CN114876577A CN 114876577 A CN114876577 A CN 114876577A CN 202210690710 A CN202210690710 A CN 202210690710A CN 114876577 A CN114876577 A CN 114876577A
- Authority
- CN
- China
- Prior art keywords
- gas concentration
- concentration sensor
- control unit
- central control
- mine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 33
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000005065 mining Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 6
- 238000013500 data storage Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 7
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 25
- 239000003245 coal Substances 0.000 description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- 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)
- Ventilation (AREA)
Abstract
The invention relates to a mine ventilation explosion-proof early warning control structure, which comprises at least one gas concentration sensor, a combustible gas concentration sensor, a central control unit and a sampling main pipe, wherein a jet orifice of an ejector faces the gas concentration sensor and the combustible gas concentration sensor, the central control unit controls an air inlet pipe to extract an air sample from a first position, the air sample is pressurized by the ejector and conveyed into the gas concentration sensor at a second position, and the gas concentration sensor at the second position transmits detection data to the central control unit; a filter is arranged in the air inlet pipe, and the electromagnetic valve can be selectively started at any time point, so that the ejector is started to transmit air to the gas concentration sensor. The invention has the advantages that: the possibility of mine fires, mine dust explosions and worker injury or death is reduced.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a mine ventilation explosion-proof early warning control structure.
Background
In coal mine accidents, gas explosion and gas combustion cause fire to be a large percentage, and the gas explosion and the gas combustion often occur together. The main reason for gas explosion is the accumulation of gas in the mine, the main component of gas is methane (CH4), accounting for about 83-89%, which is the gas formed during coal formation and stored in the coal bed, and is the most harmful gas in the underground coal mine.
The methane gas is colorless, odorless and has a density of 0.7164kg/m 3 The methane gas is nontoxic, can cause suffocation death when exceeding the limit, has the characteristics of flammability, explosiveness and the like, is mixed with air to reach a certain concentration and then burnt or exploded when meeting a high-temperature fire source, has explosiveness when the methane concentration is 5.3-15.0 percent by volume, and has a great problem which troubles the safety production of a coal mine due to the accumulation of the methane gas in the coal mine.
Currently, methane concentration is detected using fixed or portable hand-held instruments, which generally operate according to the principles of catalytic oxidation. However, stationary gas monitors measure the average concentration typically detected in an underground mine ventilation and have no way of finding what the concentration would be without the ventilation. This type of detection requires too much manual work to move with the worker and is not accurate enough to detect the concentration, which can cause an explosion when the ventilation system is stopped.
Disclosure of Invention
The present invention solves the above-mentioned technical problems and provides a mine ventilation explosion-proof early warning control structure which reduces the possibility of mine fire, mine dust explosion and worker injury or death and reduces the possibility of explosion by better managing the existing mine ventilation system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides an explosion-proof early warning control structure of mine ventilation, at least one gas concentration sensor, combustible gas concentration sensor, central control unit, sampling house steward, gas concentration sensor, combustible gas concentration sensor set up on central control unit, mine overhead door, mine tail gate, adopt frame district, mine passageway internal face, be equipped with the sampling house steward between central control unit, mine overhead door, mine tail gate, adopt frame district, mine passageway internal face, on the sampling house steward and with adjacent gas concentration sensor position correspondence department through the pipe connection intercommunication be equipped with air supply pipe, intake pipe, be equipped with the solenoid valve in the intake pipe, the air supply pipe intercommunication is equipped with the sprayer, central control unit includes data storage, alarm system, central control unit and combustible gas concentration sensor communication connection, the sprayer jet nozzle is towards gas concentration sensor, gas concentration sensor, The central control unit controls the air inlet pipe to draw an air sample from a first position and conveys the air sample into a gas concentration sensor at a second position through the pressurized air of the ejector, and the gas concentration sensor at the second position transmits detection data to the central control unit; a filter is provided in the intake pipe, the solenoid valve being selectively actuatable at any point in time to cause the injector to actuate to pass air to the gas concentration sensor, the central control unit being in communication with the mining ventilation system.
Further, the gas concentration sensors are provided in a plurality of types, and each type can measure different gas concentration ranges for different types of gas concentration sensors.
Further, the central control unit commands a rate reduction or a stop of operation of the mining ventilation system when the measured or predicted gas concentration exceeds a threshold level.
Further, the central control unit changes the ventilation direction of the mining ventilation system or the start command based on the gas concentration command.
Further, positioning an air intake between the first and second locations is also included, wherein the air intake collects air samples from the plurality of first locations and selectively transmits those air samples to a gas concentration sensor at the second location.
Further wherein the central control unit generates an alarm via the alarm system when the combustible gas concentration level exceeds a threshold level.
The invention has the following advantages: the invention provides a cheap and accurate formaldehyde monitoring system in a mining ventilation system, which can eliminate the failure of the current technology and deployment strategy, can improve the mine safety, is combined with flow data to calculate the instantaneous methane release rate, and can prevent the potential explosiveness in the mining process by measuring the methane concentration in the whole mining channel.
Detailed Description
The present invention is described in further detail below.
The utility model provides a mine ventilation explosion-proof early warning control structure, at least one gas concentration sensor, combustible gas concentration sensor, central control unit, sampling house steward, gas concentration sensor, combustible gas concentration sensor set up on central control unit, mine overhead door, mine tail gate, adopt frame district, mine passageway internal face, be equipped with the sampling house steward between central control unit, mine overhead door, mine tail gate, adopt frame district, the mine passageway internal face, the last and corresponding department of adjacent gas concentration sensor position of sampling house steward is equipped with air supply pipe, intake pipe through the pipe connection intercommunication, be equipped with the solenoid valve in the intake pipe, the air supply pipe intercommunication is equipped with the sprayer, central control unit includes data storage, alarm system, central control unit and combustible gas concentration sensor communication connection, the sprayer jet orifice is towards gas concentration sensor, The central control unit controls the air inlet pipe to draw an air sample from a first position and conveys the air sample into a gas concentration sensor at a second position through the pressurized air of the ejector, and the gas concentration sensor at the second position transmits detection data to the central control unit; a filter is provided in the intake pipe, the solenoid valve being selectively actuatable at any point in time to cause the injector to actuate to pass air to the gas concentration sensor, the central control unit being in communication with the mining ventilation system.
Preferably, the gas concentration sensor is provided in a plurality of types, and each type can measure different gas concentration ranges.
Preferably, the central control unit commands a rate reduction or stopping of operation of the mining ventilation system when the measured or predicted gas concentration exceeds a threshold level.
Preferably, the central control unit changes the ventilation direction or the start command of the mining ventilation system based on the gas concentration command.
Preferably, the method further comprises positioning an air intake between the first and second locations, wherein the air intake collects air samples from the plurality of first locations and selectively transmits those air samples to the gas concentration sensor at the second location.
Preferably wherein the central control unit generates an alarm via the alarm system when the combustible gas concentration level exceeds a threshold level.
When the method is implemented specifically, the gas concentration sensor, the gas inlet pipe, the gas supply pipe, the electromagnetic valve and the combustible gas concentration sensor form a sampling unit, and the gas concentration sensor and the combustible gas concentration sensor are positioned in an area along a coal face and prone to generating high methane concentration; the gas concentration sensor, the solenoid valve and the combustible gas concentration sensor in the sampling unit are communicated with a mining ventilation system at a front door or other safe position, and the mining ventilation system records, analyzes and displays the methane concentration; the central control unit will use the gas concentration sensor, combustible gas concentration sensor readings to alert the operator (visually and audibly) and to power down or slow down the shearer. An air sample enters from the air inlet pipe and then supplies gas to the gas concentration sensor and the combustible gas concentration sensor through an injector of the air supply pipe. The ends of the air inlet pipe and the air supply pipe can be connected with a closed filter to prevent coal dust and water drops from entering the rear end and disturbing the measured methane concentration value. Proper control of the mining ventilation system can achieve two important mine safety goals: the front of the hazardous methane zone in the gob, particularly near the face/tailgate corners and during sudden drops in atmospheric pressure, is kept a sufficient distance from the longwall face of the coal cutter so that there is not too much air flowing into the gob to prevent spontaneous combustion of the coal fines remaining in the gob. Each sampling unit may report to the central control unit over a connection (e.g., a wired, optical, or wireless connection). The central control unit comprises a Central Processing Unit (CPU) and a recording device as well as an electronic control of the shearer, an output signal for advising replacement of the registers and a display comprising a concentration map and an alarm.
The present invention and its embodiments have been described above, but the description is not limitative, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a mine ventilation explosion-proof early warning control structure which characterized in that: the system comprises at least one gas concentration sensor, a combustible gas concentration sensor, a central control unit and a sampling main pipe, wherein the gas concentration sensor and the combustible gas concentration sensor are arranged on the central control unit, a mine top door, a mine tail door, a mining frame area and the inner wall surface of a mine passage, the sampling main pipe is arranged among the central control unit, the mine top door, the mine tail door, the mining frame area and the inner wall surface of the mine passage, an air supply pipe and an air inlet pipe are communicated with the positions, corresponding to the positions of the adjacent gas concentration sensors, of the sampling main pipe through pipeline connecting pieces, an electromagnetic valve is arranged on the air inlet pipe, an ejector is arranged on the air supply pipe in a communicating manner, the central control unit comprises a data storage and alarm system, the central control unit is in communication connection with the combustible gas concentration sensor, and an ejector jet orifice of the ejector faces the gas concentration sensor and the combustible gas concentration sensor, the central control unit controls the air inlet pipe to extract an air sample from a first position, and the air sample is conveyed into a gas concentration sensor at a second position through the pressurized air of the ejector, and the gas concentration sensor at the second position transmits detection data to the central control unit; a filter is provided in the intake pipe, the solenoid valve being selectively actuatable at any point in time so that the injector is actuated to pass air to a gas concentration sensor, the central control unit being in communication with the mining ventilation system.
2. The mine ventilation explosion-proof early warning control structure of claim 1, wherein: the gas concentration sensors are arranged in a plurality of types, and are different in type, and each type can measure different gas concentration ranges.
3. The mine ventilation explosion-proof early warning control structure of claim 1, characterized in that: when the measured or predicted gas concentration exceeds a threshold level, the central control unit commands a rate reduction or stopping of the operation of the mining ventilation system.
4. The mine ventilation explosion-proof early warning control structure of claim 1, wherein: the central control unit changes the ventilation direction or the start command of the mining ventilation system based on the gas concentration command.
5. The mine ventilation explosion-proof early warning control structure of claim 1, wherein: further comprising positioning an air intake between the first and second locations, wherein the air intake collects air samples from the plurality of first locations and selectively transmits those air samples to the gas concentration sensor at the second location.
6. The mine ventilation explosion-proof early warning control structure of claim 1, wherein: wherein the central control unit generates an alarm via the alarm system when the combustible gas concentration level exceeds a threshold level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210690710.6A CN114876577A (en) | 2022-06-17 | 2022-06-17 | Mine ventilation explosion-proof early warning control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210690710.6A CN114876577A (en) | 2022-06-17 | 2022-06-17 | Mine ventilation explosion-proof early warning control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114876577A true CN114876577A (en) | 2022-08-09 |
Family
ID=82681753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210690710.6A Withdrawn CN114876577A (en) | 2022-06-17 | 2022-06-17 | Mine ventilation explosion-proof early warning control structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114876577A (en) |
-
2022
- 2022-06-17 CN CN202210690710.6A patent/CN114876577A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110833665A (en) | Fire fighting system of turbine engine | |
| US20210348988A1 (en) | Methane watchdog system, a cost effective approach to longwall methane monitoring and control | |
| CN109630186B (en) | CO (carbon monoxide) 2 /N 2 Mine thermal power disaster emergency treatment device and method capable of quickly suppressing explosion | |
| CN104110582B (en) | Safe delivery system for coal bed gas | |
| CN215949584U (en) | Mine gas monitoring system | |
| CN113250736B (en) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time | |
| CN107970539B (en) | Fire extinguishing system for van vehicle | |
| CN203515658U (en) | Automatic closed remote-control fire protection device for coal mining area | |
| CN204591331U (en) | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas | |
| CN118273760B (en) | Underground mining explosion-proof intelligent control system | |
| CN114876577A (en) | Mine ventilation explosion-proof early warning control structure | |
| CN205387929U (en) | High -gas coal mine gas drainage system | |
| CN2797637Y (en) | Full automatic gas prealarming and explosion-proof device used for coal mine | |
| CN204419234U (en) | Mine development end tunnel high-concentration hydrogen sulfide spraying treatment system | |
| CN205074300U (en) | Clear stifled device of pressure / pressure differential measuring instrument | |
| CN110700875A (en) | Spontaneous combustion three-zone measuring system and method for goaf | |
| CN216410261U (en) | Information multi-element perception and early warning system for underground pipe gallery | |
| CN105507941B (en) | Underground coal mine working face automates safety system | |
| CN213688435U (en) | Mining belt conveyor integrated protection sensor testing arrangement | |
| CN213205623U (en) | Gob entry detects plugging device with leaking out | |
| CN206111244U (en) | Gaseous real -time supervision device of conflagration landmark in mining collecting space area in pit | |
| CN210096761U (en) | Novel spark is surveyed and is put out system test device that removes | |
| CN220237623U (en) | Mining automatic alarm cooling fire extinguishing system | |
| CN206668326U (en) | A kind of deep mining strata behavior analysis of roadway long-range detector | |
| CN215309831U (en) | Carbon dioxide fire extinguishing system for coal mine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220809 |
|
| WW01 | Invention patent application withdrawn after publication |