CN209990497U - Shock wave triggering touch type transient opening valve passive explosion-proof device - Google Patents
Shock wave triggering touch type transient opening valve passive explosion-proof device Download PDFInfo
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- CN209990497U CN209990497U CN201820662602.7U CN201820662602U CN209990497U CN 209990497 U CN209990497 U CN 209990497U CN 201820662602 U CN201820662602 U CN 201820662602U CN 209990497 U CN209990497 U CN 209990497U
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Abstract
The utility model provides a passive explosion-proof device of shock wave triggering touch instantaneous opening valve, a shock wave receiving disc is connected with a bolt at the tail end of an impact guide rod, an adjusting column is used for fixing the impact guide rod, and the front end of the impact guide rod is connected with an impact thimble; the pressure storage barrel sleeve is embedded in the powder storage barrel; the pressure storage barrel is provided with a pressure gauge and an inflation valve at the outer part thereof by penetrating the outer powder storage barrel from top to bottom at the port of the pressure storage barrel, and the pressure storage barrel is provided with an air injection hole at the end; the pressure storage barrel and the touch trigger are sealed by a sealing diaphragm, the tail end of the pressure storage barrel is provided with a touch piston and a spring, and the front end of the powder storage barrel is provided with a sealing diaphragm for sealingAnd (6) sealing. The utility model can realize fast spraying of the extinguishing medium in 20 milliseconds, 110g/m3Extinguishing fire with high concentration to form an explosion-proof fog surface with the duration of more than 1500 milliseconds, and extinguishing burning explosion flame; the sealing performance is good; effectively avoids the occurrence of false alarm and false hit conditions, and has good stability, practicability, reliability, advancement and safety.
Description
Technical Field
The invention relates to an explosion-proof device, in particular to a passive explosion-proof device of a shock wave triggering touch type instant-open valve.
Background
The passive explosion-proof device is mainly used for the current coal mine tunnel explosion-proof device, the explosion-proof device is subjected to explosion-proof through a passive explosion-proof rock powder shed, an explosion-proof water bag, an explosion-proof water tank and the like, in the passive explosion-proof device, the triggering of the explosion-proof device and the spraying of a flame suppressor are finished by precursor shock waves generated by gas and coal dust explosion, when the gas and the coal dust are exploded, the precursor shock waves generated by the explosion overturn a wood board, the water tank or a water bag containing rock powder and are crushed before the explosion flame reaches an explosion-proof shed area, inert rock powder or water mist in a diffuse flying state is formed, a flame suppression band is formed in the tunnel, the effects of absorbing heat, reducing temperature and resisting flame are achieved, and the gas and coal dust explosion flame is limited near an explosion source.
In the prior art, an explosion-proof rock powder shed is hung at the top of a roadway and belongs to a semi-open structure, and dry powder and rock powder are easy to damp and agglomerate and lose efficacy; the explosion-proof water bag and the explosion-proof water tank are also hung at the top of the roadway and belong to a semi-open structure, and water in the explosion-proof water bag and the explosion-proof water tank is easy to evaporate and disperse and coal dust is accumulated and agglomerated to cause failure; the explosion-proof conditions of the passive explosion-proof shed, the explosion-proof water bag and the explosion-proof groove are difficult and poor in effect, and the method comprises the following steps:
P≥P0 ；
td<（Tp-Tf）<td+ts 。
in the formula: p is the precursor detonation wave pressure; p0-pressure required by the action of the explosion-proof shed; td is the time required by the action of the explosion-proof shed; ts-duration of water mist or rock dust; tp-the time when the front drive explosion reaches the explosion isolation shed; tf-the moment the explosion flame reaches the explosion barrier.
When the explosive flame shape is relatively small, the front driving explosive wave pressure P<P0When the explosion-proof shed cannot obtain enough kinetic energy, the explosion-proof shed is overturned and fails, flame can randomly spread, larger N times of explosion are caused, and casualty loss of personnel and property is increased; moreover, the time explosion-proof shed obtains enough kinetic energy to be turned over, the time for the explosion-proof material to form the explosion-proof effect is short, the explosion-proof range is narrow, the explosion-proof effect cannot be completely achieved, and once the explosion-proof shed is enabled to be completely achievedFlame breaks through the isolation belt and can continue to spread, thus causing great personnel and property loss; the current practice is commonly failure.
SUMMERY OF THE UTILITY MODEL
To the above situation, the utility model aims to: by utilizing the characteristic that the explosion shock wave is faster than the flame propagation speed, the sealing membrane of the high-pressure container is opened by converting the shock wave kinetic energy into mechanical energy, so that the dry powder is pushed to be sprayed with a fire extinguishing medium to form an explosion suppression barrier, the flame spread is blocked, the burning flame is extinguished, and the safety of personnel and equipment is guaranteed.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the passive explosion-proof device is structurally composed of a shock wave receiving disc, a shock guide rod, a shock thimble, an adjusting column, a touch piston, a spring, an air jet hole, a sealing diaphragm, a touch trigger, an inflation valve, a pressure gauge, a pressure storage barrel, a powder storage barrel and a sealing diaphragm; wherein, the shock wave receiving plate is connected with the tail end of the impact guide rod through a bolt, the adjusting column is used for fixing the impact guide rod, and the front end of the impact guide rod is connected with an impact thimble; the pressure storage barrel sleeve is embedded in the powder storage barrel; the pressure storage barrel has a port, a pressure gauge and an inflation valve respectively arranged outside the pressure storage barrel by passing through the external powder storage barrel from top to bottom, and the pressure storage barrel is provided with air injection holes at the end, and 4 air injection holes are arranged along the axis at 360 degrees; the pressure storage barrel and the touch trigger are sealed by a sealing diaphragm, the tail end of the pressure storage barrel is provided with a touch piston and a spring, and the front end of the powder storage barrel is provided with a sealing diaphragm for sealing.
And 4 vent holes which are coaxial and equidistant are formed in the pressure storage barrel and the touch trigger.
The working principle is as follows: after the shock wave receiving disc receives the explosion shock wave, the impact guide rod is pushed to move forwards, the impact thimble impacts the touch piston and compresses the spring by utilizing kinetic energy, and then the touch trigger is pushed to move forwards, the trigger releases energy instantly, the directional impact sealing diaphragm is gathered, the sealing diaphragm is punctured, high-pressure nitrogen in the pressure storage barrel flows into the powder storage barrel through the exhaust hole and the air jet hole of the touch trigger, the high-pressure gas is used for pushing and spraying a fire extinguishing medium, the fire extinguishing medium further diffuses in a protection space, and flame is completely extinguished in a submerged mode.
The passive explosion-proof device provided by the utility model adopts a percussion separated design structure, and the impact mechanism consisting of the shock wave receiving disc, the impact guide rod and the impact thimble is separated from the trigger mechanism consisting of the touch piston, the spring, the air jet hole, the sealing diaphragm and the touch trigger, thereby being beneficial to safe assembly and transportation protection and being convenient for maintenance; the device adopts a pure mechanical design, does not have any electronic component, does not generate electric spark, and has high safety; the design that the stretching elastic force generated by the spring is adopted to offset the wind power of the roadway is adopted, and the mechanism consisting of the touch piston and the spring plays a role in balancing the wind power of the roadway, so that the device is prevented from being mistakenly exploded. In the provided structure, the impact thimble impacts the expansion elasticity generated by the compression spring of the touch piston and the recoil force of high-pressure nitrogen to push the touch piston to move backwards to form a sealing structure with the powder storage barrel shell, so that air pressure leakage during spraying is avoided, and sufficient power is ensured for spraying explosion suppression medium; maintaining a continuous spray power of more than 1000 milliseconds.
The utility model has the advantages that: can realize the rapid spraying of the extinguishing medium within 20 milliseconds, 110g/m3Extinguishing fire with high concentration to form an explosion-proof fog surface with the duration of more than 1500 milliseconds, and extinguishing burning explosion flame; the sealing performance is good, the problems of dry powder agglomeration, coal dust accumulation and the like are eliminated, and the roadway protection technical means is revolutionarily improved; adopt percussion formula disconnect-type design and tunnel wind-force balanced design in the design, avoid the emergence of wrong report, mistake percussion condition, have good stability, practicality, reliability, advance, security.
Drawings
FIG. 1 is a schematic structural diagram of a passive explosion-proof device;
in the figure: 1. a shock wave receiving disc; 2. adjusting the column; 3. impacting the guide rod; 4. impacting the thimble; 5. touching the piston; 6. a spring; 7. a gas injection hole; 8. a touch trigger; 9. sealing the membrane; 10. a pressure gauge; 11. an inflation valve; 12. a pressure storage barrel; 13. a powder storage barrel; 14. and (5) sealing the membrane.
Detailed Description
As shown in fig. 1, the utility model provides a shock wave triggers passive flame proof device of touch instantaneous valve, its structure comprises shock wave receiving disc 1, adjustment post 2, striking guide arm 3, striking thimble 4, touching piston 5, spring 6, fumarole 7, touching trigger 8, sealed diaphragm 9, manometer 10, gas charging valve 11, pressure storage bucket 12, powder storage bucket 13 and sealing diaphragm 14; wherein, the shock wave receiving disc 1 is connected with the tail end of the impact guide rod 3 by a bolt, the adjusting column 2 is used for fixing the impact guide rod 3, and the front end of the impact guide rod 3 is connected with an impact thimble 4; the pressure storage barrel 12 is embedded in the powder storage barrel 13; a pressure gauge 10 and an inflation valve 11 are respectively arranged outside the pressure storage barrel 12 through an external powder storage barrel 13 from top to bottom, the pressure storage barrel 12 is provided with air injection holes 7 at the end, and 4 air injection holes 7 are arranged along the axis at 360 degrees; the pressure storage barrel 12 and the touch trigger 8 are sealed by a sealing diaphragm 9, the tail end of the pressure storage barrel 12 is provided with a touch piston 5 and a spring 6, and the front end of the powder storage barrel 13 is provided with a sealing diaphragm 14 for sealing.
After the shock wave receiving disc 1 receives the explosion shock wave, the impact guide rod 3 is pushed to move forwards, the impact thimble 4 impacts the touch piston 5 by utilizing kinetic energy, the compression spring 6 further pushes the touch trigger 8 to move forwards, the trigger releases energy instantly, the directional impact sealing diaphragm 9 is gathered and the sealing diaphragm 9 is punctured, high-pressure nitrogen in the pressure storage barrel 12 flows into the powder storage barrel 13 through the exhaust hole and the air jet hole 7 of the touch trigger 8, the high-pressure gas is used for pushing and spraying fire extinguishing media, the fire is further diffused in a protection space, and flame is completely extinguished in a submerged mode.
Claims (2)
1. The utility model provides a passive flame proof device of shock wave trigger touch instant-open valve which characterized in that: the structure of the device consists of a shock wave receiving disc, a shock guide rod, a shock thimble, an adjusting column, a touch piston, a spring, an air jet hole, a sealing diaphragm, a touch trigger, an inflation valve, a pressure gauge, a pressure storage barrel, a powder storage barrel and a sealing diaphragm; wherein, the shock wave receiving plate is connected with the tail end of the impact guide rod through a bolt, the adjusting column is used for fixing the impact guide rod, and the front end of the impact guide rod is connected with an impact thimble; the pressure storage barrel sleeve is embedded in the powder storage barrel; the pressure storage barrel has a port, a pressure gauge and an inflation valve respectively arranged outside the pressure storage barrel by passing through the external powder storage barrel from top to bottom, and the pressure storage barrel is provided with air injection holes at the end, and 4 air injection holes are arranged along the axis at 360 degrees; the pressure storage barrel and the touch trigger are sealed by a sealing diaphragm, the tail end of the pressure storage barrel is provided with a touch piston and a spring, and the front end of the powder storage barrel is provided with a sealing diaphragm for sealing.
2. The shock wave triggering touch type transient open valve passive explosion suppression device according to claim 1, characterized in that: and 4 vent holes which are coaxial and equidistant are formed in the pressure storage barrel and the touch trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820662602.7U CN209990497U (en) | 2018-05-06 | 2018-05-06 | Shock wave triggering touch type transient opening valve passive explosion-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820662602.7U CN209990497U (en) | 2018-05-06 | 2018-05-06 | Shock wave triggering touch type transient opening valve passive explosion-proof device |
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| CN209990497U true CN209990497U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820662602.7U Active CN209990497U (en) | 2018-05-06 | 2018-05-06 | Shock wave triggering touch type transient opening valve passive explosion-proof device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868863A (en) * | 2018-05-06 | 2018-11-23 | 山西新思备科技股份有限公司 | A kind of passive explosion isolation device of shock wave triggering touch type wink valve opening |
-
2018
- 2018-05-06 CN CN201820662602.7U patent/CN209990497U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868863A (en) * | 2018-05-06 | 2018-11-23 | 山西新思备科技股份有限公司 | A kind of passive explosion isolation device of shock wave triggering touch type wink valve opening |
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