CN202909342U - Explosion energy-absorbing fire extinguisher - Google Patents
Explosion energy-absorbing fire extinguisher Download PDFInfo
- Publication number
- CN202909342U CN202909342U CN 201220569253 CN201220569253U CN202909342U CN 202909342 U CN202909342 U CN 202909342U CN 201220569253 CN201220569253 CN 201220569253 CN 201220569253 U CN201220569253 U CN 201220569253U CN 202909342 U CN202909342 U CN 202909342U
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- pressure cavity
- absorbing
- explosion
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Abstract
The utility model relates to an explosion energy-absorbing fire extinguisher, which is provided with a low-pressure cavity; a fragile panel affected by changes of environment pressure is embedded at the sealing opening of the low-pressure cavity; a wave and energy absorbing layer is covered on the inner wall of the low-pressure cavity; a fire extinguisher body is arranged in the low-pressure cavity; and the fire extinguisher body is internally provided with a fire extinguishing agent, and a touch switch of the fire extinguisher body is linked with the fragile panel. According to the utility model, the fire extinguishing agent is additionally arranged in the low-pressure cavity, as a result, fire extinguishing efficiency and speed are improved; meanwhile, the wave and energy absorbing layer is covered on the inner wall of the low-pressure cavity and can play a role in absorbing wave and energy in case of explosion, so that further expansion of explosion hazards is effectively avoided, and personal casualty and property loss caused by the explosion hazards are greatly reduced.
Description
Technical field
The utility model relates to a kind of blast energy-absorbing extinguishing device, is particularly useful for the mine laneway that exists potential safety hazard inflammable and explosive, also is applicable to the place that other restricted clearance combustible explosion dangers exist.
Background technology
According to document and media report, the whole world is owing to casualties and the property loss that the combustible blast causes is very huge.In China, coal mine gas, coal-dust explosion happen occasionally, and its catastrophic consequence is very serious.For addressing this problem, extensively adopt the explosion isolation camp facilities such as tank, water bag and stone-dust barrier in the coal production process, belong to the passive type explosion isolation device, respectively with water and rock dust as blast reducer.Blast reducer requires matter a large amount foot, must atomize during action fully.The triggering of explosion isolation camp action and the spraying of blast reducer all are to be finished by forerunner's pressure wave that gas, coal-dust explosion produce.When gas, coal-dust explosion occur when, before explosive flame arrives the explosion isolation camp district, forerunner's pressure wave that blast produces is thrown and is held the plank of rock dust or make tank, water bag fragmentation, inert dust or the water smoke of the state of flying upward is filled the air in formation, in the tunnel, form the inhibition zone of stamping out the flames, play heat absorption, cooling, fire-retardant effect, gas and dust explosion flame is limited near the quick-fried source, cut off detonation propagation, restriction Accidents Disasters scope and continue the purpose that enlarges thereby reach.The precondition of coal mine flame-proof canopy performance flame proof effect has two: the one, and forerunner's pressure wave energy explosion isolation camp of throwing forms rock dust or the water smoke band of suspended state; The 2nd, explosive flame hysteresis forerunner pressure wave arrives the time of explosion isolation camp greater than process actuation time of explosion isolation camp, simultaneously again less than the actuation time of explosion isolation camp and the duration sum of water smoke or rock dust.
Find by a large amount of investigation and analysis, the quick-fried device of the obstruct such as fluid barrier and stone-dust barrier is being played a role aspect the control gas explosion disaster, but generally also can come with some shortcomings when using, the situation that failure of apparatus occurs, and the cost compare of the Explosion suppressant that has (machine hydrochlorate, carbonate and single ammonium phosphate etc.) is expensive.The moisture of fluid barrier easily evaporates, lacks, need to often wash by water, change water, increase workman's workload and labour intensity, the exploiting field especially large at air quantity, that temperature is high, easily sneak into mine dust in the water, cause fire extinguishing water smoke can not effectively cut off the propagation of explosive flame because of water shortage.Water bag canopy in the stope drift active workings, the mode that should adopt easy unhook to hang by design code, but the multiplex iron wire of water bag canopy in the practical application is fastened and is hung on capplce, so that the atomizing when action of the isolated blast establishment of this passive form is further insufficient, greatly reduces the effect of flame proof.The down-hole wet environment can make in the stone-dust barrier dry rock dust moisture absorption caking, reduces after the action of stone-dust barrier isolated blast establishment even loses explosion insulation performance.When the inertia sample analysis of rock dust is chemically examined, surpass design code if find combustible content, must change rock dust, this has increased difficulty to Technical Management Work.If it is excessively low to intercept the operating pressure of quick-fried device, be that sensitivity is too high, then the flame front at a distance low impulsive force of forerunner's pressure wave can make and intercept quick-fried device and begin action, before arriving, flame just discharged inhibitor, like this when flame arrives the quick-fried setting position of obstruct, because inhibitor is discharged in advance, and because the Action of Gravity Field major part has sunk to the base plate in tunnel, only be left to be suspended in the lower inhibitor of concentration in the space.May exceed explosion limit although contain the methane gas of inhibitor, but because explosive flame has higher cohesive force and globality preferably, flame still may be under the promotion of huge explosion product pressure, pass this zone and ignite the methane gas of front and continue to propagate forward, intercept quick-fried device and do not have the quick-fried effect that intercepts.Do not have the quick-fried effect that intercepts if intercept quick-fried device.If intercept the pressure that the operating pressure of quick-fried device is higher than forerunner's pressure wave, or the action that intercepts quick-fried device has surpassed flame time delay and has arrived the required time of device, the inhibitor of its release will drop to the flame zone rear portion, even drop on after the flame zone, do not receive that then the flame front portion of inhibitor impact will continue to propagate forward, intercept quick-fried device and do not have the quick-fried effect that intercepts yet.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and provides a kind of simple in structure, and cost is low, and is easy to use, has widely practicality, and intercepts the blast energy-absorbing extinguishing device of quick-fried successful.
The technical scheme that realizes the utility model purpose is: a kind of blast energy-absorbing extinguishing device has a low pressure cavity; The sealing part of described low pressure cavity is inlayed and is provided with the frangible face that affected by ambient pressure variations, is covered with on the inwall of low pressure cavity to inhale the ripple absorbing energy layer; Described low pressure inside cavity is provided with extinguishing device; Has extinguishing chemical in the described extinguishing device, the touch switch of extinguishing device and frangible face interlock.
The described extinguishing device of technique scheme is arranged on the top inner wall of low pressure cavity.
The described suction ripple of technique scheme absorbing energy layer is asbestos layer.
The described frangible face of technique scheme is glass or pottery.
The described frangible face of technique scheme is curved.
The described extinguishing chemical of technique scheme is the difluorochlobromo-methane extinguishing chemical.
After adopting technique scheme, the utlity model has following positive effect:
(1) the utility model is set up extinguishing chemical in the low pressure inside cavity, has improved fire-fighting efficiency and blow-off velocity; Simultaneously, be covered with suction ripple absorbing energy layer on the inwall of low pressure cavity; In case blast, can reach the effect of inhaling the ripple energy-absorbing, the further expansion of explosion disaster be can effectively avoid, thereby casualties and property loss that explosion disaster causes reduced widely.
(2) be that negative pressure is near vacuum in the low pressure cavity of the present utility model, when frangible face is broken, pressure in the mine laneway descends suddenly, and expanding gas and explosion energy that absorption blast that just can be a large amount of produces suppress the spread speed of explosion wave and explosive flame to greatest extent, so that explosive flame extinguishes, intercept quick-fried successful, and apparatus structure is simple, cost is low, easy to use, have widely practicality.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cutaway view of A-A direction among Fig. 1;
1. low pressure cavitys among the figure, 2. frangible face is 3. inhaled ripple absorbing energy layer, 4. extinguishing device.
The specific embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, the utlity model has a low pressure cavity 1; The sealing part of low pressure cavity 1 is inlayed and is provided with the frangible face 2 that is subjected to the arc that ambient pressure variations affects, and is covered with on the inwall of low pressure cavity to inhale ripple absorbing energy layer 3, and inhaling ripple absorbing energy layer 3 is asbestos layer; Low pressure cavity 1 top is provided with extinguishing device 4; Has the difluorochlobromo-methane extinguishing chemical in the extinguishing device 4, the touch switch of extinguishing device 4 and frangible face 2 interlocks.Frangible face 2 is the friable materials such as glass or pottery.
Operation principle of the present utility model is: this device is preset in the tunnel of the inflammable and explosive section of mine or blast suspicion thing next door, when combustible is blasted, in a single day the low pressure cavity 1 that is preset in the explosion scene receives explosion wave, the frangible face 2 of low pressure cavity 1 is at once cracked, expanding gas with the blast generation, explosion wave, explosive flames etc. suck in the low pressure cavity 1, owing to be that negative pressure is near vacuum in the low pressure cavity 1, just expanding gas and explosion energy that absorption blast that can be a large amount of produces, the spread speed that suppresses to greatest extent explosion wave and explosive flame, the positioned inside fire-fighting efficiency of low pressure cavity 1 is high simultaneously, the difluorochlobromo-methane extinguishing chemical that blow-off velocity is fast, the further expansion of explosion disaster be can effectively avoid, thereby casualties and property loss that explosion disaster causes reduced widely.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a blast energy-absorbing extinguishing device has a low pressure cavity (1); The sealing part of described low pressure cavity (1) is inlayed and is provided with the frangible face (2) that affected by ambient pressure variations, is covered with on the inwall of low pressure cavity to inhale ripple absorbing energy layer (3); It is characterized in that: described low pressure cavity (1) inside is provided with extinguishing device (4); Described extinguishing device has extinguishing chemical in (4), the touch switch of extinguishing device (4) and frangible face (2) interlock.
2. blast energy-absorbing extinguishing device according to claim 1, it is characterized in that: described extinguishing device (4) is arranged on the top inner wall of low pressure cavity (1).
3. blast energy-absorbing extinguishing device according to claim 1, it is characterized in that: described suction ripple absorbing energy layer (3) is asbestos layer.
4. blast energy-absorbing extinguishing device according to claim 1 and 2 is characterized in that: described frangible face (2) is glass or pottery.
5. blast energy-absorbing extinguishing device according to claim 4, it is characterized in that: described frangible face (2) is curved.
6. blast energy-absorbing extinguishing device according to claim 1, it is characterized in that: described extinguishing chemical is the difluorochlobromo-methane extinguishing chemical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569253 CN202909342U (en) | 2012-10-31 | 2012-10-31 | Explosion energy-absorbing fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569253 CN202909342U (en) | 2012-10-31 | 2012-10-31 | Explosion energy-absorbing fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202909342U true CN202909342U (en) | 2013-05-01 |
Family
ID=48157694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569253 Expired - Fee Related CN202909342U (en) | 2012-10-31 | 2012-10-31 | Explosion energy-absorbing fire extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202909342U (en) |
-
2012
- 2012-10-31 CN CN 201220569253 patent/CN202909342U/en not_active Expired - Fee Related
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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: 20130501 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |