CN103628921A - Monitoring and controlling system for conveying safety of low-concentration gas - Google Patents
Monitoring and controlling system for conveying safety of low-concentration gas Download PDFInfo
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- CN103628921A CN103628921A CN201310677335.2A CN201310677335A CN103628921A CN 103628921 A CN103628921 A CN 103628921A CN 201310677335 A CN201310677335 A CN 201310677335A CN 103628921 A CN103628921 A CN 103628921A
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Abstract
The invention discloses a monitoring and controlling system for the conveying safety of low-concentration gas and belongs to the technical field of monitoring of the conveying safety of a gas pipeline. The system comprises a monitoring host, a data transmission interface, a monitoring substation, a water level controller, a water level sensor, a water supplementing and draining device, a water seal fire-resisting and explosion-venting device, an explosion signal controller, an impact wave sensor, a flame sensor, a pressure sensor, a power supply conversion device, an explosion inhibiting device, an explosion-resisting valve and an alarming device. The monitoring host is communicated with the monitoring substation by the data transmission interface; the monitoring substation is connected with the water level sensor, the explosion signal controller, the impact wave sensor and the power supply conversion device respectively. The monitoring and controlling system has the advantages of abundant monitoring means, instantaneity, continuousness, rapid response, high reliability and the like, is a special monitoring and controlling system which is designed for draining and utilizing the low-concentration gas, is an important safety guarantee measure for conveying and utilizing the low-concentration gas, and is a basic system for realizing monitoring automation, control automation and management automation.
Description
Technical field
The invention belongs to gas tube delivery safety monitoring technique field, be specifically related to a kind of low concentration gas delivery safety monitoring and controlling system.
Background technology
Mine gas is the main contributor that serious accident occurs in colliery; gas is again a kind of high-quality resource simultaneously; gas in coal seam is extracted out and is used; both can prevent and reduce the generation of colliery major gas accident; guarantee mine safety production; can protect again environment of mining area, increase high-quality resource, obtain good economic benefit and social benefit.Therefore, country pays much attention to gas drainage under suction work, the essential measure of administering mine gas extraction as mine gas, the 12 word policies that proposition " is first taken out afterwards and adopted, can take out to the greatest extent and take out, urge to take out to use ".Many coal mining enterprises, all in the dynamics that strengthens gas pumping work, expand extraction scope, gas pumping are risen to the height of " Life Engineering and resource engineering ".
Yet, in the existing mine gas extraction amount in the whole nation, more than approximately 80% belong to goaf or adopt and unload the gas that nip is extracted out, and wherein there is more than 70% its gas density of gas pumping amount lower than 30%, belong to low concentration gas (gas density < 30%) extraction scope, even there is quite a few mash gas extraction concentration to be limited to 5～16% lower than the gas explosion concentration of 20%(standard state, the change of state can impel the change of blast limit), because the concentration of this part gas is in explosion limit, carry and utilize, all there is serious potential safety hazard in discharge process.
According to existing " safety regulations in coal mine ", stipulate: while utilizing gas, gas density must not be lower than 30%, and in utilizing the system of gas, must be equiped with the safety device of anti-backfire, anti feedback and blast protection effect.While not utilizing gas, employing dry type to draw out methane equipment, the concentration that draws out methane must not be lower than 25%.Therefore, this low concentration gas can not be utilized effectively, and can not realize safe extraction.
The low concentration gas of current many extractions is to enter in return in down-hole, and some gas is to enter in atmosphere by blow-down pipe.Enter the pressure that gas in underground return air stream can not effectively reduce underground ventilating, safety of coal mines is existed to hidden danger all the time; Near gas overhead area with more lightning activities entering in atmosphere may occur that the region of burning things which may cause a fire disaster is a major hazard source; When low concentration gas utilizes, utilize the issuable burning things which may cause a fire disaster of end can make low concentration gas in whole pipeline in breakneck state.Therefore, the extraction of low concentration gas and utilize and must have the technology and equipment facility that can guarantee gas delivery safety, guarantees low concentration gas extraction and utilizes the security reliability of system, otherwise may cause ore deposit to ruin the particularly serious serious accident that people dies.
The conveying equipment of China's coal-mine gas utilization, all according to minimum gas density 30% design, obviously can not meet the requirement of low-concentration methane gas safe transport completely before this.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of low concentration gas delivery safety monitoring and controlling system, by Surveillance center and conveying scene interact, many signal monitorings, multistage datonation-inhibition explosion arrestment, realized low concentration gas conveyance conduit multi-parameter real time on-line monitoring.
For achieving the above object, the invention provides following technical scheme:
A low concentration gas delivery safety monitoring and controlling system, comprises monitoring host computer, data transmission interface, outstation, water level controller, level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device, detonator signal controller, flame sensor, pressure sensor, supplies electrical switching device, explosion suppressor, explosion arrestment valve and warning device; Monitoring host computer communicates by data transmission interface and outstation, and outstation is connected with water level controller, detonator signal controller, confession electrical switching device respectively; Water level controller is also connected with level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device respectively; Detonator signal controller is also connected with flame sensor, pressure sensor, confession electrical switching device respectively; For electrical switching device, be connected with explosion suppressor, explosion arrestment valve and warning device respectively.
Further, native system also comprises guest machine, and described guest machine real-time mirror image backup monitoring host computer, so that when monitoring host computer breaks down, automatically switches in real time guest machine and carry out work.
Further, described low concentration gas delivery safety monitoring and controlling system also comprises shock wave transducer, described shock wave transducer is responsible for monitoring the shock wave that sends explosion time generation in pipeline, and by start explosion arrestment valve and explosion suppressor for electrical switching device, blocking-up conveyance conduit also puts out adverse current in pipeline and the flame that returns sends alarm signal to outstation simultaneously.
Further, described flame sensor belongs to mining intrinsic safety type equipment, adopts the photo-electric sensing element of reaction at a high speed.
Further, described pressure sensor belongs to mining intrinsic safety type equipment, adopts high accuracy diffuse silicon to press as sensing element.
Further, described warning device adopts Mine-used I. S audible-visual annunciator.
Further, described water-sealing fire-retardant explosion venting device by air inlet pipe, escape pipe, water-sealing fire-retardant venting of dust explosion staving, enter Draw off valve, glass tube water level gauge forms, can in colliery, draw out methane while meeting accident explosion accident, stop the shock wave that blast produces to destroy drainage system, and cutting off the flame importing down-hole that blast produces, Accident prevention expands.
Beneficial effect of the present invention is: native system mainly carries out real time on-line monitoring to the various parameters of low concentration gas conveyance conduit, and output control signal, ensures the safety that low concentration gas is carried, utilized.System has the functions such as data sampling and processing, storage, demonstration, power-off control, overload alarm and telecommunication, when gas conveying is blasted or burns, can control the overvoltage that multistage datonation-inhibition fire-retarding device removal blast or burning produce, stamp out the flames, block in time conveyance conduit.This monitoring and controlling system has that monitoring means are abundant, uninterrupted, response in real time rapidly, high reliability, to be low concentration gas extraction and the monitoring and controlling system that utilizes design specially, being the important safety safeguard that low concentration gas is carried, utilized, is the basic system that realizes monitoring automation, auto-control and management automation.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is the structural representation of native system.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is the structural representation of native system, as shown in the figure, native system comprises monitoring host computer, data transmission interface, outstation, water level controller, level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device, detonator signal controller, flame sensor, pressure sensor, supplies electrical switching device, explosion suppressor, explosion arrestment valve and warning device; Monitoring host computer communicates by data transmission interface and outstation, and outstation is connected with water level controller, detonator signal controller, confession electrical switching device respectively; Water level controller is also connected with level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device respectively; Detonator signal controller is also connected with flame sensor, pressure sensor, confession electrical switching device respectively; For electrical switching device, be connected with explosion suppressor, explosion arrestment valve and warning device respectively.
Monitoring host computer is connected with on-site supervision substation by data transmission interface, the signal of outstation Real-Time Monitoring detonator signal controller, water level controller, shock wave transducer, and send into monitoring host computer and record, show, simultaneously, guest machine real-time mirror image backup monitoring host computer, so that when monitoring host computer breaks down, monitoring software automatically switches on guest machine and moves in real time.Detonator signal controller is responsible for monitoring the signal of flame sensor, pressure sensor, and when blast or burning occur by starting explosion arrestment valve and explosion suppressor for electrical switching device, blocking-up conveyance conduit also puts out adverse current in pipeline and the flame that returns sends alarm signal to outstation simultaneously.Water level controller is monitored the water level in water-sealing fire-retardant explosion venting device by level sensor, to guarantee water-sealing fire-retardant explosion venting device effectively and water level information is sent to outstation.Shock wave transducer is responsible for monitoring and in pipeline, is sent the shock wave that explosion time produces, and by starting explosion arrestment valve and explosion suppressor for electrical switching device, and blocking-up conveyance conduit also puts out adverse current in pipeline and the flame that returns sends alarm signal to outstation simultaneously.Total system form Yi Ge Surveillance center with carry on-the-spotly interact, the network system of many signal monitorings, multistage datonation-inhibition explosion arrestment, real time and on line monitoring.Monitoring host computer is equipped with real-time monitoring software, can be by data transmission interface real time on-line monitoring, show the sensor signal that each outstation gathers, and monitor actuators at different levels, and monitoring information real-time mirror image is backed up to guest machine.When monitoring host computer breaks down, system automatically switches to guest machine operation.
Described monitored data coffret is mainly used in ground monitoring center, belong to mining general intrinsic safety type equipment, be responsible for monitoring host computer and outstation and carry out exchanges data, there is communication distance far away, simple to operate, maintenance is little, the feature such as safe and reliable, anti-lightning strike.Described outstation is mine supervision system data acquisition control device, belong to mining intrinsic safety type equipment, mainly realize the functions such as data sampling and processing, storage, demonstration, power-off control, overload alarm, infrared remote control reception and telecommunication, it is a kind of intelligent instrument that embedded microcontroller is core of take, can articulate multiple sensors, can carry out continuous monitoring to sensor signal, equipment start-stop state etc., and with monitoring host computer exchange real time data.Described real-time monitoring software possesses multi-channel data acquisition, processing, storage, demonstration, user management, database maintenance, power-off control, overload alarm, report output and remote control function, reliable stable, it is convenient to safeguard, can increase and decrease flexibly according to actual needs functional module, realize secondary development.
Described detonator signal controller belongs to mining intrinsic safety type equipment, is a kind of intelligent instrument that embedded microcontroller is core of take.It connects flame sensor and pressure sensor with monitoring pipeline blast information, has fast monitored, sends fast the function of control signal.Described flame sensor belongs to mining intrinsic safety type equipment, adopts the photo-electric sensing element of reaction at a high speed, can make fast reaction to the optical signal that occurs in pipeline to burn or explosion time produces.Described pressure sensor belongs to mining intrinsic safety type equipment, adopts high accuracy diffuse silicon to press as sensing element, and elasticity is high, anticorrosive, resistance to wear, shock resistance and vibration, can make fast reaction to there is the pressure anomaly that burning or explosion time produce in pipeline.
The described electrical switching device that supplies belongs to mine explosion-suppression and intrinsic safety type equipment; for the light current control signal of reception is converted to heavy-current control signal and carries out high-power output; to drive explosion arrestment valve, explosion suppressor and warning device, fast response time, can cut off high-power output automatically with self-protection.Described explosion arrestment valve belongs to flame-proof mine safety means, and it,, under the driving of electrical switching device, can start valve plate action fast, turn-offs pipeline with blocking-up flame propagation passage.Described explosion suppressor belongs to flame-proof mine safety means, and it is under the driving of electrical switching device, can quick acting, in conveyance conduit, discharge a large amount of combustion materials that press down, and stamp out the flames.Described warning device mining intrinsic safety type equipment, it,, under the confession driving of electrical switching device or the control of outstation, can respond fast, sends sound and light alarm signal.
Described water-sealing fire-retardant explosion venting device by air inlet pipe, escape pipe, water-sealing fire-retardant venting of dust explosion staving, level sensor, water level controller, enter Draw off valve, glass tube water level gauge forms, can in colliery, draw out methane while meeting accident explosion accident, stop the shock wave that blast produces to destroy drainage system, and cutting off the flame importing down-hole that blast produces, Accident prevention expands.
Described water level controller belongs to mine flameproof and intrinsic safety type mining controller, it is a kind of intelligent instrument that embedded microcontroller is core of take, by level sensor, monitor water level, and control the break-make of electromagnetic valve, take in time as the container of Sensor monitoring is mended in real time, draining, make closed container water level constant in certain height.Described level sensor is to take the intelligent instrument that embedded microprocessor is core, belongs to mining intrinsic safety type mine sensors, not affected by temperature and bridging, and can adjust and demarcate.Described shock wave transducer belongs to intrinsically safe equipment, the shock wave of generation can be changed into the signal of telecommunication by transmission mechanism, and output blast monitor signal, to outstation, utilizes for electrical switching device and exports simultaneously, drives explosion arrestment valve working.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can to it, make various changes in the form and details, and not depart from the claims in the present invention book limited range.
Claims (7)
1. a low concentration gas delivery safety monitoring and controlling system, is characterized in that: comprise monitoring host computer, data transmission interface, outstation, water level controller, level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device, detonator signal controller, flame sensor, pressure sensor, supply electrical switching device, explosion suppressor, explosion arrestment valve and warning device; Monitoring host computer communicates by data transmission interface and outstation, and outstation is connected with water level controller, detonator signal controller, confession electrical switching device respectively; Water level controller is also connected with level sensor, benefit dewatering installation, water-sealing fire-retardant explosion venting device respectively; Detonator signal controller is also connected with flame sensor, pressure sensor, confession electrical switching device respectively; For electrical switching device, be connected with explosion suppressor, explosion arrestment valve and warning device respectively.
2. low concentration gas delivery safety monitoring and controlling system according to claim 1, it is characterized in that: also comprise guest machine, described guest machine real-time mirror image backup monitoring host computer, so that when monitoring host computer breaks down, automatically switches in real time guest machine and carries out work.
3. low concentration gas delivery safety monitoring and controlling system according to claim 1, it is characterized in that: described low concentration gas delivery safety monitoring and controlling system also comprises shock wave transducer, described shock wave transducer is responsible for monitoring the shock wave that sends explosion time generation in pipeline, and by start explosion arrestment valve and explosion suppressor for electrical switching device, blocking-up conveyance conduit also puts out adverse current in pipeline and the flame that returns sends alarm signal to outstation simultaneously.
4. low concentration gas delivery safety monitoring and controlling system according to claim 1, is characterized in that: described flame sensor belongs to mining intrinsic safety type equipment, adopts the photo-electric sensing element of reaction at a high speed.
5. low concentration gas delivery safety monitoring and controlling system according to claim 1, is characterized in that: described pressure sensor belongs to mining intrinsic safety type equipment, adopts high accuracy diffuse silicon to press as sensing element.
6. low concentration gas delivery safety monitoring and controlling system according to claim 1, is characterized in that: described warning device adopts Mine-used I. S audible-visual annunciator.
7. according to the low concentration gas delivery safety monitoring and controlling system described in any one in claim 1 to 6, it is characterized in that: described water-sealing fire-retardant explosion venting device by air inlet pipe, escape pipe, water-sealing fire-retardant venting of dust explosion staving, enter Draw off valve, glass tube water level gauge forms, can in colliery, draw out methane while meeting accident explosion accident, stop the shock wave that blast produces to destroy drainage system, and cutting off the flame importing down-hole that blast produces, Accident prevention expands.
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| CN104033181A (en) * | 2014-06-23 | 2014-09-10 | 淮南矿业(集团)有限责任公司 | Monitoring method and monitoring system for sealing wall of coal mine |
| CN104482413A (en) * | 2014-12-19 | 2015-04-01 | 中煤科工集团重庆研究院有限公司 | Mining gas pipeline explosion signal monitoring device |
| CN104533524A (en) * | 2014-12-19 | 2015-04-22 | 淮南润成科技股份有限公司 | Mining dust monitoring system and method |
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| CN108729966A (en) * | 2018-07-26 | 2018-11-02 | 中煤科工集团重庆研究院有限公司 | A kind of gas regenerative oxidation safe-guard system |
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| CN108758338A (en) * | 2018-06-01 | 2018-11-06 | 湖南力宇新能源科技有限公司 | gas supply system |
| CN108729966A (en) * | 2018-07-26 | 2018-11-02 | 中煤科工集团重庆研究院有限公司 | A kind of gas regenerative oxidation safe-guard system |
| CN108729966B (en) * | 2018-07-26 | 2023-09-29 | 中煤科工集团重庆研究院有限公司 | Gas heat accumulation oxidation safety guarantee system |
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