CN203201593U - Automatic and fast power-off device for gas counter-current warning - Google Patents
Automatic and fast power-off device for gas counter-current warning Download PDFInfo
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- CN203201593U CN203201593U CN 201320202768 CN201320202768U CN203201593U CN 203201593 U CN203201593 U CN 203201593U CN 201320202768 CN201320202768 CN 201320202768 CN 201320202768 U CN201320202768 U CN 201320202768U CN 203201593 U CN203201593 U CN 203201593U
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Abstract
The utility model relates to a quick automatic power-off device of gas adverse current early warning, including wind direction sensor, gas sensor, control substation hookup alarm and outage appearance in the pit, wind direction sensor and gas sensor hookup control substation in the pit respectively, the control substation in the pit hookup alarm and outage appearance respectively. The utility model discloses a wind direction sensor surveys in advance because of the change of the wind direction in the underground ventilation tunnel that coal and gas are outstanding, the gas blowout leads to, realizes in advance, cut off the power supply fast. The longest power-off time of the system is 1.7 seconds, the shortest power-off time is 1.45 seconds, and the early warning time is reduced by more than one time compared with the early warning time of only adopting a gas sensor. The principle is simple, the action is reliable, the response is timely, and the reliability and the safety of the advanced power-off system are greatly improved. The method has higher practical significance for improving the safety production of the coal mine.
Description
Technical field
The utility model relates to a kind of coal mine gas warning device, particularly the automatic rapid power-down device of a kind of gas reflux early warning.
Background technology
At present, China's monitoring technology is used evening, has introduced a collection of safety monitoring system from Poland, France, Germany, UK and USA etc. the beginning of the eighties, has equipped Part Coal Mine; When introducing, by digestion, absorb and in conjunction with the actual conditions of China's coal-mine, successively develop the monitoring systems such as KJ2, KJ4, KJ8, KJ10, KJ13, KJ19, KJ38, KJ66, KJ75, KJ80, KJ92, use in a large number in China's coal-mine.Practice shows, safety monitoring system is that very important effect has been played in Safety of Coal Mine Production and management.Needs along with fast development and enterprise's self-growth of electronic technology, computer hardware technique, domestic each main R﹠D institution and manufacturer released one after another again safety of coal mines synthesization and the digitalized network management system for monitoring such as the monitoring systems such as KJ90, KJ95, KJ101, KJF2000, KJ4/KJ2000 and KJG2000, and MSNM, WEBGIS.Simultaneously, instruct at " with the wind fixed output quota; take out afterwards first and adopt; monitoring " 12 word policies, " ventilating reliable; extraction is up to standard; effective monitoring, Management put " 16 word work systems clause relevant to safety regulations in coal mine lower, gradual perfection every industry standard of China's Safety Monitoring Control System of Coal Mine.
System has been developed into the networking monitoring of network monitoring monitoring and different monitoring and controlling systems by the single microcomputer monitoring monitoring in early stage ground.It mainly is comprised of monitoring terminal, monitoring central station, communication interface, underground substation, sensor.
The communications protocol of existing prior-warning device is lack of standardization, can not be compatible between the substation of different system; The sensor quality is lower, especially adopts the methane transducer of carrier catalyst element to have short, poor work stability and adjustment phase shortcoming frequently in application life always; Little colliery, small towns many owing to lacking the professional and technical personnel the normal furnished monitoring system of operation and maintenance; Present outage control range also mainly is for the non-intrinsic safety electric fixtures in getting working face zone, and may lose the electric fixtures of quick-fried phenomenon to other zones, does not consider outage control.
The utility model content
In order to overcome the deficiency of existing coal mine gas warning device, the utility model provides a kind of gas reflux early warning fast automatic breaker device.
The technical scheme that its technical problem that solves the utility model adopts is: the fast automatic breaker device of gas reflux early warning, comprise firedamp sensor, also comprise wind transducer, downhole monitoring substation, alarm and cutoff instrument, wind transducer and firedamp sensor connect respectively the downhole monitoring substation; The downhole monitoring substation connects respectively alarm and cutoff instrument.
Be provided with impeller, tongue tube and aviation interface in the wind transducer; Wind transducer is 1～3.
The downhole monitoring substation connects the monitoring host computer on ground.
But the inverted air current that the wind transducer perception causes because of the gas reflux that coal and Gas Outburst or gas ejection produce, can be convenient, reliable, in advance, quick by the outage of cutoff instrument realization to respective electric equipment; The wind transducer principle is simple, reliable in action, reaction are timely, this power-off system has that adverse current gas brings distinguished and admirable at first oppositely, wind transducer perception and control the cutoff instrument outage, when also having adverse current gas to arrive, firedamp sensor sends signal, realize classification, " dual fail-safe " outage, be that downhole controller passes through alarm equipment alarm, and notice ground handling station, the reliability and the safety that have greatly improved the leading circuit-breaker system.
The beneficial effect that the utlity model has is: the change of the wind of surveying in advance the underground ventilating tunnel that this outstanding adverse current that produces of invar causes by wind transducer, the power-off time of system is the longest to be 1.7 seconds, the shortest is 1.45 seconds, adopt more merely the pre-warning time of firedamp sensor to reduce more than one times, principle is simple, reliable in action, reaction are timely, greatly improve reliability and the safety of leading circuit-breaker system, had higher realistic meaning for improving Safety of Coal Mine Production.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the fast automatic breaker device of gas reflux early warning comprises firedamp sensor, also comprises wind transducer, downhole monitoring substation, alarm and cutoff instrument, and wind transducer and firedamp sensor connect respectively the downhole monitoring substation; The downhole monitoring substation connects respectively alarm and cutoff instrument.
Be provided with impeller, tongue tube and aviation interface in the wind transducer; Wind transducer is 1～3.
The downhole monitoring substation connects the monitoring host computer on ground.
According to the promotion of gas reflux speed, the wind transducer adverse current start wind speed less than gas reflux during to the monitoring point speed be: 10～15 meter per seconds, get 5 times of safety factor, determine that the startup wind speed is not more than 2 meter per seconds.
Determine firedamp sensor, the main installation site of wind transducer according to system's leading circuit-breaker time: apart from 300 meters of protrusion-dispelling work planes, apart from leading circuit-breaker control high-voltage switch gear more than 150 meters; The reverse wind speed trigger value of wind transducer is made as 1.12～1.45 meter per seconds, and trigger value can be adjusted according to the actual conditions down-hole.
Gas in underworkings is in normal value, and wind direction is for the wind the time, and intrasystem wind transducer normal operation is not reported to the police, and wind transducer is exported with the wind signal; The control closing of contact of downhole monitoring substation, monitoring system outage control network is connected, the non-intrinsic safety side conducting of the cutoff instrument of silicon rectifier chamber, the equipment normal power supply, monitored data is transferred to ground central station by the downhole monitoring substation and carries out the real time data monitoring.
When gas reflux, under the effect of adverse current wind pressure, reverse wind speed surpasses 1.12～1.45 meter per seconds of setting, when any wind transducer detects change of the wind, downhole monitoring substation to its connection sends signal, after data processing, logic analysis, sends the contrary wind alarm signal and drives the actuating of relay, cutoff instrument intrinsic safety side disconnects non-intrinsic safety side, automatically leading circuit-breaker action; The alarm trigger alarm, simultaneously downhole monitoring substation and earthward work station output gas exceeding limit alarm signal.
When firedamp sensor is reported to the police, equally also can trigger cutoff instrument work, guarantee that early warning is perfectly safe.
The inverted air current that the Gas Outburst adverse current that the rapid perception of wind transducer produces owing to coal and Gas Outburst, gas ejection causes, can be convenient, reliable, in advance, fast by the outage of cutoff instrument realization to respective electric equipment; The wind transducer principle is simple, reliable in action, reaction are timely, this power-off system has that adverse current gas brings distinguished and admirable at first oppositely, the rapid perception of wind transducer and by the outage of downhole monitoring substation control cutoff instrument, when also having adverse current gas to arrive, firedamp sensor sends signal, realize classification, " dual fail-safe " outage, the downhole monitoring substation is by alarm equipment alarm, and notice ground handling station, the reliability and the safety that have greatly improved the leading circuit-breaker system.
Claims (3)
1. the fast automatic breaker device of gas reflux early warning comprises firedamp sensor, it is characterized in that, also comprises wind transducer, downhole monitoring substation, alarm and cutoff instrument, and described wind transducer and firedamp sensor connect respectively the downhole monitoring substation; Described downhole monitoring substation connects respectively alarm and cutoff instrument.
2. the fast automatic breaker device of gas reflux early warning according to claim 1 is characterized in that, is provided with impeller, tongue tube and aviation interface in the described wind transducer; Described wind transducer is 1～3.
3. the fast automatic breaker device of gas reflux early warning according to claim 1 is characterized in that, described downhole monitoring substation connects the monitoring host computer on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202768 CN203201593U (en) | 2013-04-22 | 2013-04-22 | Automatic and fast power-off device for gas counter-current warning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202768 CN203201593U (en) | 2013-04-22 | 2013-04-22 | Automatic and fast power-off device for gas counter-current warning |
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| Publication Number | Publication Date |
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| CN203201593U true CN203201593U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320202768 Expired - Fee Related CN203201593U (en) | 2013-04-22 | 2013-04-22 | Automatic and fast power-off device for gas counter-current warning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500138B (en) * | 2014-10-16 | 2019-05-07 | 中国矿业大学(北京) | Driving face in coal mine coal and gas prominent alarm method |
-
2013
- 2013-04-22 CN CN 201320202768 patent/CN203201593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500138B (en) * | 2014-10-16 | 2019-05-07 | 中国矿业大学(北京) | Driving face in coal mine coal and gas prominent alarm method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20160422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |