CN209821061U - Coal mine underground multi-gas detection device - Google Patents
Coal mine underground multi-gas detection device Download PDFInfo
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- CN209821061U CN209821061U CN201822081933.4U CN201822081933U CN209821061U CN 209821061 U CN209821061 U CN 209821061U CN 201822081933 U CN201822081933 U CN 201822081933U CN 209821061 U CN209821061 U CN 209821061U
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Abstract
The utility model discloses a coal mine underground multi-gas detection device, which comprises a gas acquisition unit, a detection unit, a display unit and a transmission, storage and power supply unit; the gas collecting unit comprises a steam-water separator, an intrinsic safety type gas pump, a gas flowmeter and an electromagnetic valve, the detecting unit is a multi-parameter gas sensor, the display unit is a liquid crystal display screen, the transmission and storage power supply unit is a monitoring substation, gas is sent to the multi-parameter gas sensor through the steam-water separator, the intrinsic safety type gas pump and the gas flowmeter, the multi-parameter gas sensor detects a gas concentration value and then displays the gas concentration value, the multi-parameter gas sensor detects the gas concentration value and converts the gas concentration value into a digital signal, and the digital signal is transmitted to the monitoring substation and then uploaded to a ground central station to be displayed; the monitoring substation outputs a control signal to control the electromagnetic valve, and the electromagnetic valve controls the work of the intrinsic safety type air pump. The utility model discloses the various gas concentration in monitoring collecting space area, data can show in the pit, also can upload to ground central station.
Description
Technical Field
The utility model relates to a colliery is gaseous detection device more in pit belongs to colliery monitoring facilities technical field.
Background
China is the largest coal producing and consuming country in the world and is one of a few countries in the world which take coal as a main energy source. Coal mining produces large quantities of harmful gases including CH4, CO, H2S, SO2, NOx, etc. H2S, SO2, NOx and other gases have low content, are easily dissolved in water, and are changed into acid after water spraying treatment in coal mining. However, the contents of the CH4 and the CO are high, the gas is almost insoluble in water, the gas belongs to flammable and explosive gas, and the gas is extremely harmful to human bodies after the CO is inhaled. Ventilating systems are always operated on working faces and traffic roadways, fresh air is continuously fed to dilute harmful gases, but the harmful gases are also continuously generated in a closed environment in a goaf of a coal mine, so that the dynamic change conditions of the harmful gases need to be mastered in time. Therefore, in order to avoid production accidents caused by harmful gas explosion in the goaf, it is important to quickly and accurately monitor various gases, and research and development of flammable and explosive mixed gas detection instruments are also a problem of concern in the industry.
The prior art detector is limited to the detection of single gas, and has the defects of multiple devices and complex power supply. The existing single gas detection technology cannot meet the increasing coal mine monitoring market demand.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a colliery is gaseous detection device more in pit, with the collecting space area airtight wall environmental gas who takes out after punching, through catch water and gas flowmeter, send to multi-parameter gas sensor's air chamber, detect out accurate gas concentration value by the sensor after, show on the display screen of device, also change into digital signal simultaneously, transmit for control substation or industrial ethernet, go up at last and reach ground central station demonstration and store.
The purpose of the utility model is realized through the following technical scheme:
a coal mine underground multi-gas detection device comprises a gas acquisition unit 1, a detection unit 2, a display unit 3 and a transmission, storage and power supply unit 4; the gas collecting unit 1 comprises a steam-water separator, an intrinsic safety type gas pump, a gas flowmeter and an electromagnetic valve, the detecting unit 2 is a multi-parameter gas sensor, the display unit 3 is a liquid crystal display screen, the transmission storage power supply unit 4 is a monitoring substation, environmental gas extracted after punching a goaf airtight wall sequentially passes through the steam-water separator, the intrinsic safety type gas pump and the gas flowmeter and is sent to a gas chamber of the multi-parameter gas sensor, a gas concentration value is detected by the multi-parameter gas sensor and then displayed on the liquid crystal display screen, and meanwhile, the gas concentration value detected by the multi-parameter gas sensor is converted into a digital signal and then transmitted to the monitoring substation to be uploaded to a ground central station for display and storage; the monitoring substation outputs control signals to control the electromagnetic valve, the electromagnetic valve controls the work of the intrinsic safety type air pump, and the monitoring substation supplies power to the intrinsic safety type air pump and the multi-parameter air sensor.
The purpose of the utility model can be further realized through the following technical measures:
the underground coal mine multi-gas detection device comprises an electromagnetic valve, a steam-water separator, an intrinsic safety air pump, a gas flowmeter and a gas flowmeter, wherein the electromagnetic valve is DFB-20/10Q, the steam-water separator is SLQ, the intrinsic safety air pump is FZD400, the gas flowmeter is LZB, and the flow parameter is 25-250 ml/min.
The underground multi-gas detection device for the coal mine comprises a multi-parameter gas sensor, a main control processing unit, an infrared remote control input unit, a signal processing unit, an intrinsic safety power supply and an infrared CH4Sensor element and electrochemical O2Sensor element, electrochemical CO sensor element, and electrochemical H sensor element2The infrared remote sensing device comprises an S sensing element, a 12864 liquid crystal display screen, an RS485 digital signal transmission module, a control signal output unit and an acousto-optic alarm electrical appliance, wherein the model of the RS485 digital signal transmission module is ADM2483, and the infrared CH4The types of the sensing elements are as follows: MSHia-p/HR/5/V/PC CH4A, electrochemical formula O2The types of the sensing elements are as follows: 40X-V, and the model of the electrochemical CO sensing element is as follows: 4CM, electrochemical formula H2The type of the S sensing element is as follows: H2S-B1; the intrinsically safe power supply comprises a main control processing unit, a signal processing unit, an infrared CH4 sensing element, an electrochemical O2 sensing element,The electrochemical CO sensing element and the electrochemical H2S sensing element are powered; the infrared CH4 sensing element, the electrochemical O2 sensing element, the electrochemical CO sensing element and the electrochemical H2S sensing element are connected with the input end of the signal processing unit, the signal processing unit filters and amplifies signals and then transmits the signals to the main control processing unit through the output end, the infrared remote control input unit is connected with the main control processing unit and inputs remote control setting parameters, the main control processing unit is connected with a 12864 liquid crystal display screen, an RS485 digital signal transmission module, a control signal output unit and an acousto-optic alarm electrical appliance, the 12864 liquid crystal display screen displays multiple gas parameters, the RS485 digital signal transmission module converts the multiple gas parameters into RS485 signals and transmits the RS485 signals to the monitoring substation, the control signal output unit outputs control signals to close a dangerous circuit, and the acousto-optic alarm electrical appliance alarms when the gas parameters exceed the limit.
Compared with the prior art, the beneficial effects of the utility model are that: the concentration of various gases in the goaf is monitored in real time or at regular time, the data can be displayed underground and also can be uploaded to a ground central station, and the dynamic change conditions of the harmful gases can be mastered in time, so that production accidents caused by the explosion of the harmful gases in the goaf are avoided.
Drawings
FIG. 1 is a structural diagram of the coal mine underground multi-gas detection device of the utility model;
fig. 2 is a structural diagram of the multi-parameter gas sensor of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1, the coal mine underground multi-gas detection device comprises a gas acquisition unit 1, a detection unit 2, a display unit 3 and a transmission, storage and power supply unit 4; the gas collection unit 1 comprises a steam-water separator, an intrinsic safety type air pump, a gas flowmeter and an electromagnetic valve, wherein the model of the electromagnetic valve is DFB-20/10Q, the model of the steam-water separator is SLQ, the model of the intrinsic safety type air pump is FZD400, the model of the gas flowmeter is LZB, and the flow parameter is 25-250 ml/min.
The detection unit 2 is a multi-parameter gas sensor, the display unit 3 is a liquid crystal display screen, and the transmission, storage and power supply unit 4 is an existing underground coal mine monitoring substation. The detected gas is collected by drilling and pumping on the closed wall of the coal mine goaf. The specific implementation mode is that the monitoring substation provides an intrinsic safety 12V direct-current power supply for the intrinsic safety type air pump to work, and then the digital pulse coding control signal sent by the monitoring substation controls the electromagnetic valve to be opened and closed, so that the intrinsic safety type air pump is controlled to work. When the electromagnetic valve is opened, the air pump starts to pump air from the goaf, the air is filtered by the steam-water separator, the liquid is filtered, and the filtered air is limited by the flow rate of the air flow meter and is delivered to the detection air chamber of the multi-parameter air sensor at a constant speed. After the gas concentration value is detected by the multi-parameter gas sensor, the gas concentration value is displayed on the liquid crystal display screen, and meanwhile, the gas concentration value detected by the multi-parameter gas sensor is converted into a digital signal, transmitted to the monitoring substation and then uploaded to the ground central station for displaying and storing.
As shown in fig. 2, the specific embodiment of the multi-parameter gas sensor is: the multi-parameter gas sensor comprises a main control processing unit, an infrared remote control input unit, a signal processing unit, an intrinsic safety power supply, an infrared CH4 sensing element, an electrochemical O2 sensing element, an electrochemical CO sensing element, an electrochemical H2S sensing element, a 12864 liquid crystal display screen, an RS485 digital signal transmission module, a control signal output unit and an acousto-optic alarm electrical appliance, wherein the main control processing unit can be composed of an ARM processor, the RS485 digital signal transmission module is ADM2483, and the infrared CH4 sensing element is as follows: MSHia-p/HR/5/V/PCCH4A, electrochemical type O2 sensor element model number: 40X-V, and the model of the electrochemical CO sensing element is as follows: 4CM, electrochemical H2S sensor element model number: H2S-B1; the intrinsically safe power supply supplies power to the main control processing unit, the signal processing unit, the infrared CH4 sensing element, the electrochemical O2 sensing element, the electrochemical CO sensing element and the electrochemical H2S sensing element; the infrared CH4 sensing element, the electrochemical O2 sensing element, the electrochemical CO sensing element and the electrochemical H2S sensing element are connected with the input end of the signal processing unit, the signal processing unit filters and amplifies the signal and then transmits the signal to the main control processing unit through the output end, the infrared remote control input unit is connected with the main control processing unit to input remote control setting parameters, the main control processing unit is connected with the 12864 liquid crystal display screen, the RS485 digital signal transmission module, the control signal output unit and the acousto-optic alarm electrical appliance, the 12864 liquid crystal display screen displays a plurality of gas parameters, the RS485 digital signal transmission module converts the plurality of gas parameters into RS485 signals to be uploaded to the monitoring substation, the control signal output unit outputs control signals to close the dangerous circuit, for example, when CH4 exceeds the standard, the control signal output unit outputs a control signal to close a nearby circuit and an audible and visual alarm electrical appliance gives an alarm.
The utility model discloses sensing element will detect data transfer and handle for the main control processing unit, then carry out the numerical value that the threshold value contrast whether reaches transfinite warning by the main control processing unit to demonstrate each detected value on the LCD screen. If the gas concentration exceeds the limit, the buzzer and the LED lamp are used for giving an audible and visual alarm to prompt a detection person of the gas concentration, the gas concentration data detected in the process can be stored in the main control processing unit to be stored permanently, the data are transmitted to the monitoring substation through RS485 signals, and then the substation sends the stored data to the central station through the underground Ethernet ring network and stores the data in the database of the upper computer. The utility model discloses the latest multi-parameter detection technique of application has now high accuracy, automation, networking and reliable operation, detects multiple gaseous concentration in environment, reaches various gaseous detection purposes in the pit, and the safety of staff in the protection pit provides powerful analytical means for surveying latent safe operation hidden danger.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (1)
1. A coal mine underground multi-gas detection device is characterized by comprising a gas acquisition unit, a detection unit, a display unit and a transmission, storage and power supply unit; the gas collecting unit comprises a steam-water separator, an intrinsic safety type gas pump, a gas flowmeter and an electromagnetic valve, the detecting unit is a multi-parameter gas sensor, the display unit is a liquid crystal display screen, the transmission, storage and power supply unit is a monitoring substation, environmental gas extracted after punching a goaf airtight wall sequentially passes through the steam-water separator, the intrinsic safety type gas pump and the gas flowmeter and is sent to a gas chamber of the multi-parameter gas sensor, after a gas concentration value is detected by the multi-parameter gas sensor, the gas concentration value is displayed on the liquid crystal display screen, meanwhile, the gas concentration value detected by the multi-parameter gas sensor is converted into a digital signal, and the digital signal is transmitted to the monitoring substation and then is uploaded to a ground central station for display; the monitoring substation outputs a control signal to control the electromagnetic valve, the electromagnetic valve controls the work of the intrinsic safety type air pump, and the monitoring substation supplies power to the intrinsic safety type air pump and the multi-parameter air sensor;
the model of the electromagnetic valve is DFB-20/10Q, the model of the steam-water separator is SLQ, the model of the intrinsic safety type air pump is FZD400, the model of the gas flowmeter is LZB, and the flow parameter is 25-250 ml/min; the multi-parameter gas sensor comprises a main control processing unit, an infrared remote control input unit, a signal processing unit, an intrinsic safety power supply, an infrared CH4 sensing element, an electrochemical O2 sensing element, an electrochemical CO sensing element, an electrochemical H2S sensing element, a 12864 liquid crystal display screen, an RS485 digital signal transmission module, a control signal output unit and an acousto-optic alarm electrical appliance, wherein the model of the RS485 digital signal transmission module is ADM2483, and the model of the infrared CH4 sensing element is as follows: MSHia-p/HR/5/V/PC CH4A, electrochemical O2 sensor element model number: 40X-V, and the model of the electrochemical CO sensing element is as follows: 4CM, electrochemical H2S sensor element model number: H2S-B1; the intrinsically safe power supply supplies power to the main control processing unit, the signal processing unit, the infrared CH4 sensing element, the electrochemical O2 sensing element, the electrochemical CO sensing element and the electrochemical H2S sensing element; the infrared CH4 sensing element, the electrochemical O2 sensing element, the electrochemical CO sensing element and the electrochemical H2S sensing element are connected with the input end of the signal processing unit, the signal processing unit filters and amplifies signals and then transmits the signals to the main control processing unit through the output end, the infrared remote control input unit is connected with the main control processing unit and inputs remote control setting parameters, the main control processing unit is connected with a 12864 liquid crystal display screen, an RS485 digital signal transmission module, a control signal output unit and an acousto-optic alarm electrical appliance, the 12864 liquid crystal display screen displays multiple gas parameters, the RS485 digital signal transmission module converts the multiple gas parameters into RS485 signals and transmits the RS485 signals to the monitoring substation, the control signal output unit outputs control signals to close a dangerous circuit, and the acousto-optic alarm electrical appliance alarms when the gas parameters exceed the limit.
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| CN201822081933.4U CN209821061U (en) | 2018-12-12 | 2018-12-12 | Coal mine underground multi-gas detection device |
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| CN201822081933.4U CN209821061U (en) | 2018-12-12 | 2018-12-12 | Coal mine underground multi-gas detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459403A (en) * | 2018-12-12 | 2019-03-12 | 镇江中煤电子有限公司 | The more gas-detecting devices of underground coal mine and detection method |
| CN111812278A (en) * | 2020-07-31 | 2020-10-23 | 中煤科工集团重庆研究院有限公司 | Coal mine goaf gas monitoring and early warning system and method based on data fusion |
| CN114459534A (en) * | 2021-12-24 | 2022-05-10 | 陕西斯达防爆安全科技股份有限公司 | Mining intelligent multi-parameter measuring device and measuring method |
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2018
- 2018-12-12 CN CN201822081933.4U patent/CN209821061U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459403A (en) * | 2018-12-12 | 2019-03-12 | 镇江中煤电子有限公司 | The more gas-detecting devices of underground coal mine and detection method |
| CN111812278A (en) * | 2020-07-31 | 2020-10-23 | 中煤科工集团重庆研究院有限公司 | Coal mine goaf gas monitoring and early warning system and method based on data fusion |
| CN114459534A (en) * | 2021-12-24 | 2022-05-10 | 陕西斯达防爆安全科技股份有限公司 | Mining intelligent multi-parameter measuring device and measuring method |
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