CN104389629B - Gas and solid jet active flame-retarding explosion-suppressing unit - Google Patents
Gas and solid jet active flame-retarding explosion-suppressing unit Download PDFInfo
- Publication number
- CN104389629B CN104389629B CN201410736341.5A CN201410736341A CN104389629B CN 104389629 B CN104389629 B CN 104389629B CN 201410736341 A CN201410736341 A CN 201410736341A CN 104389629 B CN104389629 B CN 104389629B
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- Prior art keywords
- explosion
- gas
- flame
- explosion suppression
- fire
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- 239000007787 solid Substances 0.000 title claims abstract description 13
- 238000004880 explosion Methods 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims abstract description 43
- 230000001629 suppression Effects 0.000 claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 14
- 239000002817 coal dust Substances 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 230000000505 pernicious effect Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003197 gene knockdown Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/08—Rock dusting of mines; Depositing other protective substances
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
A gas and solid jet active flame-retarding explosion-suppressing unit is applicable to flame retardance and explosion suppression for an industrial pipe used for delivering explosive combustible gases and also applicable to explosion suppression for a roadway in which coal mine gas-dust explosion occurs. The gas and solid jet active flame-retarding explosion-suppressing unit comprises an acquisition and control device and a fire extinguishing and explosion suppression device; the acquisition and control device comprises a flame sensor, an acquirer, a signal processor and a controller; the fire extinguishing and explosion suppression device comprises ABC dry chemical fire extinguishing agent, a storage tube, an electromagnetic valve, a relief valve and a high-pressure nitrogen source. By the use of the gas and solid jet active flame-retarding explosion-suppressing unit, the problem that existing explosion suppression facility fail to stop propagation of multiple explosions and fail to dilute harmful gases is solved.
Description
Technical field
The present invention relates to a kind of gas-solid two-phase jet flow active back-fire relief explosion suppression device, it is particularly suited for conveying and there is explosion danger
Property the industrial pipeline of fuel gas in back-fire relief datonation-inhibition, be also applied for coal mine gas coal-dust explosion occur tunnel in suppression
Quick-fried.
Background technology
Since founding of New, there is once the accident totally 24 of more than dead hundred people in national colliery, cause 3780 people dead
Die, wherein gas (coal dust) explosion accident 21, dead 3424 people, accident plays number and death toll accounting is respectively 87.5% He
90.58%.《Safety regulations in coal mine》Regulation, highly gassy mine Driving Face in Coal Tunnel should install facility quick-fried every (suppression), and exploitation has
The mine of coal seam liable to dust explosion is it is necessary to have prevention and the measure of isolation coal-dust explosion.In typically large-scale state-owned coal mines, tunnel
In all press《Safety regulations in coal mine》When arranging explosion-proof water barrier, but gas explosion occurring, these flame proof measures are not played should
There is effect, or even these devices strengthen bursting strength on the contrary sometimes, promote the propagation of blast.Daping Coalmine gas in 2004
Explosion accident investigation finds be mounted near the working face of explosion-proof water barrier still there is 41 miner's death, as one obvious example
Son.In order to prevent methane accumulation on source, increasing colliery increases the input of gas pumping, and gas pumping is to reduce
Mine gas emission rate and prevent the measure that effects a permanent cure of gas explosion, country also clearly proposes the gas of down-hole extraction as civilian
Fuel or industrial chemicals are used.But in China's coal-mine gas pumping amount, concentration be less than 30% (low concentration gas) watt
This extraction amount accounts for more than 60%, and significant component of gas density is in explosion ratio limit range, and its course of conveying exists
Serious potential safety hazard.During gas electricity end is delivered to by pipe long-distance, once tempering in generating end
Or when being mixed into metal fragment friction generation spark in pipeline, the gas in pipeline may be detonated, if processing not in time, just
May proceed to spread to extraction pump, demolish extraction equipment, or even spread to underground coal mine, cause bigger personal injury and property to damage
Lose.《Safety regulations in coal mine》Regulation, must be equiped with anti-backfire, anti feedback and blast protection effect in the system using gas
Safety device.As can be seen here, effectively datonation-inhibition technical measures are all needed badly in coal mine down-hole tunnel and gas conveyer tube.
China makes remarkable progress in explosion-proof flame proof technical elements, such as by national " six or five ", " the Seventh Five-Year Plan ", " eight or five ",
The brainstorm project research such as " 95 ", have developed 6 kinds of passive type explosion isolation camps (i.e. explosion-insulating water tank fragility canopy, isolated blast water bottle canopy, moistureproof rock
Powder canopy, explosion-insulating water tank foam canopy, XGS type explosion isolation camp and KYG type Quick-moving type explosion isolation camp) and 3 kinds of automatic explosion suppression devices are (i.e.
ZGB-Y type triggered barrier, ZYB-S type automatic air-generating explosion suppression device, YBW-1 type non-transformer trigger-type explosion suppression device).Logical
Cross labor is carried out to these devices it is seen that, the research of current gas explosion suppression aspect also has some to be needed to solve
Problem：
(1) effective range of application of passive isolated blast establishment is narrow, is mostly disposable apparatus, but it some times happens that many in colliery
Secondary blast, now passively explosion isolation device will lose flame proof effect.
(2) Explosion suppressant of explosion suppression device only has a kind of composition of powder substantially automatically, and it does not have the energy of dilution pernicious gas
Power is it is impossible to avoid the diffusion of pernicious gas, so that causing larger range of casualties.
Content of the invention
Technical problem：The purpose of the present invention is the weak point overcoming in prior art, provides one kind can extinguish blast fire
Flame, suppression shock motion, dilution toxic and harmful, stop multiple detonation propagation gas-solid two-phase jet flow active back-fire relief datonation-inhibition
Device.
Technical scheme：The gas-solid two-phase jet flow active back-fire relief explosion suppression device of the present invention, including acquisition control device and fire extinguishing
Explosion suppression device two large divisions；Described acquisition control device includes two flame sensors and two being located on pipeline outer wall face
Collector, the signal processor being connected with the Ethernet interface of collector and collection that individual flame sensor output port is connected
The controller that the output port of device is connected, collector, signal processor are all connected with explosion-proof electrical source with the power port of controller；
Described fire-extinguishing explosion suppression device includes being located at two storage tube cells below pipeline outer wall face, the ABC of storage does in two storage tube cells
Powder extinguishing chemical, two magnetic valves being connected with two storage tube cell another port respectively, it is connected with two magnetic valve air inlets respectively
Two pressure-reducing valves, two elevated pressure nitrogen sources of the gas being connected with two pressure-reducing valve air inlets respectively；The two of described fire-extinguishing explosion suppression device
The power port of individual magnetic valve is all connected with the output port of the controller of described acquisition control device.
Two described flame sensors are located at same horizontal line, and spacing is 62～122m.
Interface centered on the interface that the midpoint of two described flame sensor lines is located, during two storage tube cells are located at
The both sides at heart interface, the spacing of two storage tube cells is 1～2m.
Injection pressure after pressure-reducing valve decompression for the described elevated pressure nitrogen source of the gas>1MPa.
Beneficial effect：Effective range of application of the passive isolated blast establishment of exploitation is narrow at present, is mostly disposable apparatus, but coal
It some times happens that multiple explode in ore deposit, now passive explosion isolation device will lose flame proof effect；And the Explosion suppressant of automatic explosion suppression device
Substantially only has a kind of composition of powder, it does not have the ability of dilution pernicious gas it is impossible to avoid the diffusion of pernicious gas, so that making
Become larger range of casualties.Instant invention overcomes these are not enough, the gas-solid two-phase jet flow active back-fire relief explosion suppression device that provides
Explosive flame can not only be extinguished completely, suppress the propagation once exploded moreover it is possible to dilution toxic and harmful, stop repeatedly blast
Propagate.When there is gas fuel burning or explosion time in pipeline (or tunnel), the flame sensor of the present invention detects flare up fire
And be converted into voltage signal and be transferred to collector, collector outputs signals to controller, and controller sends order-driven electricity
Magnet valve is opened, and after magnetic valve is opened, high pressure nitrogen is quickly sprayed with ABC powder extinguishing agent, forms high pressure in pipeline (or tunnel)
Gas-solid two-phase jet flow curtain, is fully contacted with flame front, and the energy of a large amount of absorption flames simultaneously terminates elementary reaction chain, so that flame is put out
Go out, thus terminating propagation in pipeline (or tunnel) for the flame.Burn or explode after successfully being suppressed, the presence energy of high pressure nitrogen
Dilution fuel gas, make combustable gas concentration be less than the explosion ratio limit, remaining ABC powder extinguishing agent be deposited in pipeline (or
Tunnel) bottom, once there is secondary or multiple blast, when prodromal blast wave propagates to this region, it is deposited on pipeline (or tunnel)
The ABC powder extinguishing agent of bottom is kicked up, and Eddy diffusion in atmosphere, and is fully contacted with the flame front of rear arrival, makes flame
Extinguish, suppression subsequent explosion or multiple blast continue to propagate forward.
Brief description
Fig. 1 is assembly of the invention structural representation.
In figure：1- pipeline, 2- flame sensor, 3- collector, 4- signal processor, 5- controller, 6- explosion-proof electrical source, 7-
Center interface, 8- stores up tube cell, 9-ABC powder extinguishing agent, 10- magnetic valve, 11- pressure-reducing valve, 12- elevated pressure nitrogen source of the gas, 13- flame
Face.
Specific embodiment
Below in conjunction with the accompanying drawings one embodiment of the present of invention is further described：
The gas-solid two-phase jet flow active back-fire relief explosion suppression device of the present invention, including acquisition control device and fire-extinguishing explosion suppression device two
Most of；Described acquisition control device includes two flame sensors 2 being located in pipeline 1 outside wall surface and two flames pass
Collector 3, the signal processor 4 being connected with the Ethernet interface of collector 3 and the collector 3 that sensor 2 output port is connected
The controller 5 that output port is connected, the power port of collector 3, signal processor 4 and controller 5 all with explosion-proof electrical source 6 phase
Even, two flame sensors 2 are located at same horizontal line, and spacing is 62～122m, the midpoint place of two flame sensor 2 lines
Interface centered on interface 7, two storage tube cells 8 are located at the both sides of center interface 7, and the spacing of two storage tube cells 8 is 1～2m；
Described fire-extinguishing explosion suppression device includes being located at the ABC of 8, the two inner storages of storage tube cell 8 of two storage tube cells below pipeline 1 outside wall surface
Powder extinguishing agent 9, two magnetic valves 10 being connected with two storage tube cell 8 another port respectively, enter with two magnetic valves 10 respectively
Two connected pressure-reducing valves 11 of gas port, two elevated pressure nitrogen sources of the gas 12 being connected with two pressure-reducing valve 11 air inlets respectively, elevated pressure nitrogen
Injection pressure after pressure-reducing valve 11 decompression for the source of the gas 12>1MPa；The power supply of two magnetic valves 10 of described fire-extinguishing explosion suppression device
Port is all connected with the output port of the controller 5 of described acquisition control device.
When there is gas fuel burning or explosion time in pipeline 1, the flame front 13 being formed is detected by flame sensor 2
Afterwards, the flare up fire collecting is transformed into voltage signal and is transferred to collector 3 by flame sensor 2, and collector 3 outputs signals to
Controller 5, controller 5 sends order-driven magnetic valve 10 and opens, the elevated pressure nitrogen after magnetic valve 10 is opened, in elevated pressure nitrogen source of the gas 12
Gas sprays into pipeline 1 through pressure-reducing valve 11, magnetic valve 10 and storage tube cell 8 together with ABC powder extinguishing agent 9, in pipeline 1 inner high voltage nitrogen
Gas and ABC powder extinguishing agent 9 form high pressure gas-solid two-phase jet flow curtain, knock down the flame, stop burning or blast from continuing to propagate forward.
Burn or explode after successfully being suppressed, the presence of high pressure nitrogen can dilute fuel gas, make combustable gas concentration be less than blast dense
The degree limit, remaining ABC dry powder is deposited in pipeline (or tunnel) bottom, once there is secondary or multiple blast, prodromal blast wave
When propagating to this region, the ABC dry powder being deposited on pipeline (or tunnel) bottom is kicked up, Eddy diffusion in atmosphere, and with rear
The flame front arriving is fully contacted, and makes fray-out of flame, and suppression is secondary or multiple blast continues to propagate forward.The gas that the present invention provides
Gu dual-phase jet active back-fire relief explosion-suppressing method can not only extinguish explosive flame completely, suppress the propagation once exploded moreover it is possible to dilute
Toxic and harmful, stops the propagation of repeatedly blast.
Claims (1)
1. a kind of gas-solid two-phase jet flow active back-fire relief explosion suppression device, described device is applied to conveying and has explosion hazard combustible gas
The datonation-inhibition field of back-fire relief in the industrial pipeline of body and coal mine gas coal-dust explosion generation tunnel, described device is characterised by：
Including acquisition control device and fire-extinguishing explosion suppression device two large divisions；Described acquisition control device includes being located at pipeline (1) outer wall
Collector (3) and collector that two flame sensors (2) on face are connected with two flame sensor (2) output ports
(3) controller (5) that the signal processor (4) that Ethernet interface is connected is connected with the output port of collector (3), collection
Device (3), signal processor (4) are all connected with explosion-proof electrical source (6) with the power port of controller (5), two flame sensors (2)
Positioned at same horizontal line, the spacing of two flame sensors (2) is 62～122m, the midpoint of two flame sensor (2) lines
Interface (7) centered on the interface that place is located；Described fire-extinguishing explosion suppression device includes being located at two storages below pipeline (1) outside wall surface
Tube cell (8), the ABC powder extinguishing agent (9) of the inner storage of two storage tube cells (8), it is connected with two storage tube cell (8) another port respectively
Two magnetic valves (10), two pressure-reducing valves (11) being connected with two magnetic valve (10) air inlets respectively, subtract with two respectively
Two elevated pressure nitrogen sources of the gas (12) that pressure valve (11) air inlet is connected, two storage tube cells (8) are located at the both sides of center interface (7), and two
The spacing of individual storage tube cell (8) is 1～2m, injection pressure after pressure-reducing valve (11) decompression for the elevated pressure nitrogen source of the gas (12)>1MPa；Institute
State the output all with the controller (5) of described acquisition control device for the power port of two magnetic valves (10) of fire-extinguishing explosion suppression device
Port is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736341.5A CN104389629B (en) | 2014-12-04 | 2014-12-04 | Gas and solid jet active flame-retarding explosion-suppressing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736341.5A CN104389629B (en) | 2014-12-04 | 2014-12-04 | Gas and solid jet active flame-retarding explosion-suppressing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389629A CN104389629A (en) | 2015-03-04 |
| CN104389629B true CN104389629B (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410736341.5A Expired - Fee Related CN104389629B (en) | 2014-12-04 | 2014-12-04 | Gas and solid jet active flame-retarding explosion-suppressing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389629B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443153A (en) * | 2015-11-23 | 2016-03-30 | 重庆安迈科技有限公司 | Nitrogen injection machine monitoring system based on internet of things |
| CN109568861A (en) * | 2018-10-26 | 2019-04-05 | 河海大学 | A kind of tunnel temperature-sensitive self-starting gas-solid two-phase jet flow fire extinguishing system |
| CN109764245A (en) * | 2019-02-19 | 2019-05-17 | 常州港华燃气有限公司 | Compound explosion suppression type natural gas line explosion-proof fire-extinguishing device |
| CN114233366A (en) * | 2021-12-06 | 2022-03-25 | 安徽理工大学 | Device for inhibiting secondary explosion of coal dust by using nitrogen dry powder |
| CN114652994B (en) * | 2022-04-22 | 2023-05-16 | 山东科技大学 | Rapid sealing explosion-proof foaming agent for coal mine tunnel, generator and sealing explosion-proof method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119877A (en) * | 1990-07-19 | 1992-06-09 | The United States Of America As Represented By The Secretary Of The Interior | Explosion suppression system |
| US20070039744A1 (en) * | 2005-08-22 | 2007-02-22 | Fireaway Llc | Tunnel fire protection system |
| CN2870900Y (en) * | 2005-12-20 | 2007-02-21 | 宋明韬 | Cabinet superfine dry-powdery extinguisher |
| CN201277056Y (en) * | 2008-10-23 | 2009-07-22 | 西安科技大学 | Pressure-storage type gas/dust explosion suppression apparatus |
| CN201453898U (en) * | 2009-05-07 | 2010-05-12 | 梁伟健 | Pressure storage cabinet type superfine dry powder automatic fire extinguisher |
| CN202223801U (en) * | 2011-07-15 | 2012-05-23 | 天津环绿科消防设备有限公司 | Automatic cabinet-type fire fighting device |
| CN202398012U (en) * | 2011-07-27 | 2012-08-29 | 江苏中瑞电保智能装备有限公司 | Pipe network type dry powder fire extinguishing system for sub-areas |
| CN102335491B (en) * | 2011-07-27 | 2013-07-10 | 江苏中瑞电保智能装备有限公司 | Pipe network type dry powder fire extinguishing system and method |
| CN202731976U (en) * | 2012-08-10 | 2013-02-13 | 四川天微电子有限责任公司 | Mine gas fire-extinguishing explosion suppression device |
| CN103055444B (en) * | 2012-12-25 | 2015-02-18 | 山东环绿康新材料科技有限公司 | Ultrafine dry powder extinguishing method for high-rack stereoscopic warehouse |
| CN204002898U (en) * | 2014-08-04 | 2014-12-10 | 四川天微电子有限责任公司 | Mining tunnel explosion suppressor |
| CN204457839U (en) * | 2014-12-04 | 2015-07-08 | 安徽理工大学 | A kind of gas-solid two-phase jet flow initiatively back-fire relief explosion suppression device |
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2014
- 2014-12-04 CN CN201410736341.5A patent/CN104389629B/en not_active Expired - Fee Related
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| CN104389629A (en) | 2015-03-04 |
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