CN202325623U - Mining automatic explosion-proof rock dust barrier device - Google Patents
Mining automatic explosion-proof rock dust barrier device Download PDFInfo
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- CN202325623U CN202325623U CN2011204976838U CN201120497683U CN202325623U CN 202325623 U CN202325623 U CN 202325623U CN 2011204976838 U CN2011204976838 U CN 2011204976838U CN 201120497683 U CN201120497683 U CN 201120497683U CN 202325623 U CN202325623 U CN 202325623U
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Abstract
The utility model discloses a mining automatic explosion-proof rock dust barrier device. The mining automatic explosion-proof rock dust barrier device comprises a rock dust container, a detonating cord system and two sensors. The mining automatic explosion-proof rock dust barrier device is uniformly arranged in a mining roadway of a coal face; the sensors are connected with the detonating cord system by wires; and the detonating cord system is connected together with a detonating rope in the rock dust container by the detonating cord. The detonating cord system receives and records time difference of impact waves monitored by the two sensors, so that the time needed for reaching the rock dust container can be calculated; and the detonating cord is ignited before the flame arrives, and detonates the detonating rope in the rock dust container, a fire-extinguishing material is sprayed out by the pressure generated by explosion, and a thick and incombustible rock-dust mist zone is formed in the roadway, so that explosive flame is cooled or extinguished, and further an explosion-proof effect is achieved.
Description
Technical field
The utility model relates to a kind of mining self-action flame proof stone-dust barrier device; Through sensor installation in a distance, common flame proof rock dust boron the place ahead; Calculate coal-dust explosion flame transmission speed, thus before flame arrives the forced spraying rock dust, the spreading of prevention coal-dust explosion.
Background technology
Coal-dust explosion is one of major casualty of Coal Production, when the coal dust with explosion danger reaches finite concentration, under the effect of igniting thermal source, fierce blast can take place.Impact generated by explosion and flame can cause serious threat to the personal safety to underground operators, but and moment destroy work plane and production equipment.And, increase the content that is deposited on the non-combustible matter of coal dust on tunnel perisporium and the support with machinery or manual regular spreading rock dust in the tunnel, can suppress coal-dust explosion.These technical measures mainly are to make the coal dust that sinks on tunnel perisporium and support lose explosivity, and after the Where topical area blasts, it are isolated in the small range, and it is no longer enlarged, thereby realize the flame proof purpose.
Because the harmfulness of coal-dust explosion is huge, China's " Safety of Coal Mine Production rules " regulation: exploitation has the mine of coal seam liable to dust explosion, and the both wings of mine, adjacent exploiting field and adjacent coal seam all must separate with stone-dust barrier or fluid barrier.The flame proof measure that present China's coal-mine mainly adopts has stone-dust barrier flame proof, tank canopy flame proof and water curtain flame proof etc.Stone-dust barrier is made up of the rock dust plate and the rock dust that are erected at the top, tunnel, when explosion wave transmits, the rock dust plate is blown turn over; Stacking rock dust on every block of plate disperses and descends; In the tunnel, form the dense rock dust fog belt of not firing, explosive flame is cooled or extinguishes, play the flame proof effect.The tank canopy is made up of the hard with certain intensity frangible polyvinyl chloride and polychlorostyrene fat vacuole foam, and filled with water places apart from top board 100 ~ 150mm place in the tank.Its flame proof effect is that when blast in the down-hole, quick-fried wind pressure collapses the tank canopy and turns over and fragmentation.Instant water is scattered in the lane space, forms vaporific.Eliminate flame, thereby stop the coal-dust explosion flame transmission.The flame proof water curtain also is to be used for the propagation of isolated coal-dust explosion, and it is installed in apart from explosive source at a distance, and water curtain need often be opened just effectively.Above-mentioned several kinds of flame proof measures all must lean on shock wave to blow rock dust or water open before the explosive flame blast; But often there is following situation; When the coal-dust explosion of high-power; Explosive flame is propagated at a terrific speed, thus flame they also do not have enough time to have an effect when having passed stone-dust barrier, therefore can not play the effect of the isolated blast of stamping out the flames.
In view of the problem that exists in the above-mentioned technology, we are necessary to design a kind of when explosive flame attacks, and can promptly and accurately play a role, and suppress the explosion isolation device that blast spreads.
The utility model content
The purpose of the utility model provides the higher mining self-action flame proof stone-dust barrier device of a kind of accuracy.To achieve these goals, the utility model adopts following technical scheme:
A kind of mining self-action flame proof stone-dust barrier device; It comprises: rock dust container, det-cord system and sensor; This device is arranged in the stope drift active workings of coal-face; Sensor links to each other with the det-cord system through lead, and the det-cord system links together through the detonating fuse in det-cord and the rock dust container.
Contain rock dust and detonating fuse that quench is used in the described rock dust container, this rock dust container seals;
Described det-cord system accepts the signal of sensor, and it is made a response, and connects detonating fuse through det-cord;
Said sensor comprises two pressure-sensitive sensors, and when positive pressure of shock wave acted on sensor, sensor reached the det-cord system with signal through lead.
The distance of two sensor distance rock dust containers is respectively 20m and 40m.
When the det-cord system receives the variation of sensor, through the propagation of explosion of det-cord the detonating fuse in the rock dust container to be ignited, the detonating fuse blast produces pressure the digesting material forced spraying in the rock dust container is gone out, thereby stops spreading of explosive flame.
The beneficial effect of the utility model: the reflection time difference through two sensors calculates the spread speed of explosive flame; And in time ignite the detonating fuse in the rock dust container; Quench material is wherein sprayed away fast, put out explosive flame accurately, reliably, stop coal-dust explosion to spread.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Drawing reference numeral: 1, rock dust container; 2, det-cord system; 3, sensor; 4, lead; 5, det-cord.
The specific embodiment
A kind of mining self-action flame proof stone-dust barrier device; It comprises: rock dust container 1, det-cord system 2 and sensor 3; This device is arranged in the stope drift active workings of coal-face; Sensor links to each other with the det-cord system through lead 4, and the det-cord system links together through det-cord 5 and rock dust container 1 interior detonating fuse.
Det-cord system 2 accepts the signal of sensor 3, and it is made a response, and moves in the rock dust container 1.Det-cord system 2 connects two sensors 3, the time difference through two sensor 3 signals transmission, calculates flame propagation velocity, and according to the distance of sensor 3 with det-cord system 2, calculates the time that flame arrives.According to institute computing time, det-cord automatically ignites.
Det-cord system 2 is placed on the rock dust plate at top, tunnel with rock dust container 1.
The mounting method of sensor 3: the position of first pressure-sensitive sensor mounting distance rock dust container 40m, second pressure-sensitive sensor is installed in the position apart from rock dust container 20m.Two sensors all are installed on the side that coal-dust explosion possibly take place, and during installation, direction will be moved towards over against the tunnel in the sensing part of sensor, is convenient to accept explosion wave, quick-fried wind or flame.
Det-cord system 2 is the opening entry time when receiving first sensor signal, and when receiving second sensor signal, record stops.Institute is explosion wave blanking time and propagates the used time of 20m; Can extrapolate the time that rock dust container place needs that arrives with this, the det-cord that therefore can before flame arrives, ignite, det-cord is ignited the detonating fuse in the rock dust container; The pressure that blast produces sprays away the quench material; In the tunnel, form the dense rock dust fog belt of not firing, explosive flame is cooled or extinguishes, play the flame proof effect.
More than for the preferred embodiment of the utility model and design graphic; Above-mentioned preferred embodiment and designing graphicly only illustrates; It is not the interest field that is used to limit the utility model; All with equalization technological means or be the interest field that contained of the application's claim and implementer, all do not break away from the protection domain of the utility model.
Claims (3)
1. mining self-action flame proof stone-dust barrier device; It is characterized in that: it comprises: rock dust container, det-cord system and sensor; This device is arranged in the stope drift active workings of coal-face; Sensor links to each other with the det-cord system through lead, and the det-cord system links together through the detonating fuse in det-cord and the rock dust container.
2. a kind of mining self-action flame proof stone-dust barrier device according to claim 1, it is characterized in that: contain rock dust and detonating fuse that quench is used in the described rock dust container, this rock dust container seals;
Described det-cord system accepts the signal of sensor, and it is made a response, and connects detonating fuse through det-cord;
Said sensor comprises two pressure-sensitive sensors, and when positive pressure of shock wave acted on sensor, sensor reached the det-cord system with signal through lead.
3. a kind of mining self-action flame proof stone-dust barrier device according to claim 2, it is characterized in that: the distance of two sensor distance rock dust containers is respectively 20m and 40m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204976838U CN202325623U (en) | 2011-12-05 | 2011-12-05 | Mining automatic explosion-proof rock dust barrier device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204976838U CN202325623U (en) | 2011-12-05 | 2011-12-05 | Mining automatic explosion-proof rock dust barrier device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325623U true CN202325623U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204976838U Expired - Fee Related CN202325623U (en) | 2011-12-05 | 2011-12-05 | Mining automatic explosion-proof rock dust barrier device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202325623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291349A (en) * | 2013-06-14 | 2013-09-11 | 山东立业矿井隔爆装备有限公司 | Mine under-shaft automatic explosive-suspension device triggered in two directions |
| CN104764899A (en) * | 2015-03-23 | 2015-07-08 | 安徽理工大学 | Explosive detonation velocity test method |
-
2011
- 2011-12-05 CN CN2011204976838U patent/CN202325623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291349A (en) * | 2013-06-14 | 2013-09-11 | 山东立业矿井隔爆装备有限公司 | Mine under-shaft automatic explosive-suspension device triggered in two directions |
| CN104764899A (en) * | 2015-03-23 | 2015-07-08 | 安徽理工大学 | Explosive detonation velocity test 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: 20120711 Termination date: 20141205 |
|
| EXPY | Termination of patent right or utility model |