CN106226353A - A kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast - Google Patents
A kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast Download PDFInfo
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- CN106226353A CN106226353A CN201610802892.6A CN201610802892A CN106226353A CN 106226353 A CN106226353 A CN 106226353A CN 201610802892 A CN201610802892 A CN 201610802892A CN 106226353 A CN106226353 A CN 106226353A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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Abstract
A kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast, it is adaptable to the blast that repeats of fuel gas is studied.System includes simulating Jiao Lian lane, colliery net, two methane-air premix airbag, high frequency flame sensor, high-frequency pressure sensor, electrion spark plug, high-tension shielding cable, electrion lighter, flare up fire transmission line, flame data acquisition unit, pressure signal transmission line, pressure data collector, data processors.The present invention has the advantages such as simple in construction, flexible combination, comprehensive function are many, both can reproduce gas initial explosion visually and ignite the evolution of subsequent explosion, and can study again the Changing Pattern of distinguished and admirable flowing in the net of Jiao Lian lane, colliery.
Description
Technical field
The present invention relates to the explosive test technical field of fuel gas, be specifically related to a kind of simulation Jiao Lian lane, colliery net gas
Repeat the pilot system of blast.
Background technology
According to statistics, so far, there is the special major accident 24 of more than the most dead hundred people in colliery, the whole nation to founding of New,
Dead 3780 people, wherein blast (including gas explosion, gas and dust explosion and coal-dust explosion) accident has 21, causes 3424 people
Death, accident plays number and death toll accounting is respectively 87.5% and 90.58%.After underground coal mine generation gas explosion, impact
Ripple and flame front along in underworkings forward communication process, prodromal blast wave goaf or other place can be accumulated watt
This is gone out, if new gas density reaches explosion limit, after the flame lagging behind shock wave arrives this flammable area, pole has can
Gas can be occurred to repeat blast.Compared with once blast, gas repeats to explode and often results in bigger casualties and property damage
Lose.
Learning from various documents and report, the research that gas is repeated blast by domestic and international expert is less, and existing
Gas explosion test result is mostly carried out experiment in spheroid or flat tube and is obtained, about in the net of simulation Jiao Lian lane, colliery
Gas repeat to explode more be a lack of research, its formed mechanism and influence factor the most fully aware of.Thus, it is necessary to send out
Bright a kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast, provides for prevention and control coal mine gas from explosion disaster
Theoretical direction.
Summary of the invention
Technical problem: lack experimentation for the most both at home and abroad simulation Jiao Lian lane, colliery net gas being repeated blast, with
And repeat gas to explode formation mechenism and influence factor's present situation the most fully aware of, the present invention provide a kind of simple in construction,
Simulation Jiao Lian lane, the colliery net gas that flexible combination, comprehensive function are many repeats the pilot system of blast, can be studied by the present invention
Gas in the net of simulation Jiao Lian lane, colliery repeats explosion overpressure law of development, gas repeats explosive flame propagation law, gas weight
Explode distinguished and admirable Changing Pattern again that cause.
Technical scheme:
A kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast, including simulation Jiao Lian lane, colliery net, setting
Before and after in the net of simulation Jiao Lian lane, colliery, two methane-air premix airbag, are set in the net outside wall surface of simulation Jiao Lian lane, colliery
High frequency flame sensor and high-frequency pressure sensor, one end stretch into previous methane-air premix airbag in electrion fire
Hua Sai, the electrion lighter being connected with the electrion spark plug other end by high-tension shielding cable, pass through flare up fire
Flame data acquisition unit that transmission line is connected with high frequency flame sensor, by pressure signal transmission line and high-frequency pressure sensor
The pressure data collector being connected, the data processor being connected with flame data acquisition unit and pressure data collector；Described mould
The high order end intending Jiao Lian lane, colliery net is provided with a ring flange, and the center of ring flange is provided with an aperture, the diameter of aperture
External diameter equal to described electrion spark plug；One end of described electrion spark plug is stretched into by the aperture of described ring flange
In described previous methane-air premix airbag；The low order end of Jiao Lian lane, described simulation colliery net opens wide all the time；Described before and after two
The methane and air pre-mixing gas configured it is provided with in individual methane-air premix airbag；During the response of described high frequency flame sensor
Between less than 5ms, the measurement scope of described high-frequency pressure sensor is 0～0.6MPa；The ignition energy of described electrion lighter
Amount is 2～100J；The response time of described flame data acquisition unit and pressure data collector is less than 1ms.Described previous first
After the electric spark that methane-air premixed gas in alkane air pre-mixing airbag is got by described electrion spark plug is ignited, formed
Gas explosion flame front and shock wave along Jiao Lian lane, described simulation colliery net propagate, shock wave breaks up later methane-air
After premix airbag, the methane-air ignited in described later methane-air premix airbag when the flame front lagging behind shock wave is pre-
During mixed gas, occurring gas to repeat blast, described high frequency flame sensor and described high-frequency pressure sensor are quick-fried by gas respectively
Fried flare up fire and pressure signal transmission are to described flame data acquisition unit and described pressure data collector, by described data
Processor stores and repeats, with analysis gas, data of exploding.
Further, the pipeline flow section of Jiao Lian lane, described simulation colliery net is circular or square, simulation angle, colliery connection
The pipeline flow section of net optional position, lane is long-pending the most identical, the pipeline flow section of simulation Jiao Lian lane, colliery net amass be 0.0064～
0.16m2, the duct wall face thickness of simulation Jiao Lian lane, colliery net is 10～20mm.
Further, the methane concentration in former and later two methane-air described premix airbag is in the range of 6～15%, previous
Methane-air premix airbag is installed in the section of tubing of Jiao Lian lane, described simulation colliery net high order end, and later methane-air is pre-
Mixed airbag is installed in the other parts pipeline of Jiao Lian lane, described simulation colliery net according to pre-set testing program.
Further, described high frequency flame sensor and the quantity of described high-frequency pressure sensor and installation position are according in advance
The testing program set determines.
Beneficial effect: repeat explosive test system by simulation Jiao Lian lane, colliery net gas and study, the most permissible
Reproduce gas initial explosion visually to ignite the evolution of subsequent explosion, then science, explore gas exactly and repeat blast
Mechanism and influence factor；On the other hand the change of distinguished and admirable flowing in the net of Jiao Lian lane, colliery when there is gas explosion catastrophe can be studied
Law, sets up the discriminant of Jiao Lian lane net wind direction；If later methane-air premix airbag being changed into the coal of deposition
Dirt or other dust-like material, utilize the present invention can also study gas explosion in the net of Jiao Lian lane, colliery and ignite the spy of dust explosion
Property；It addition, the present invention has the advantages such as simple in construction, flexible combination, comprehensive function are many, be conducive to carrying out teaching and research work
Making, gas repeats blast characteristics research significant, the prevention and control for coal mine gas from explosion disaster provide theoretical direction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structural representation of the embodiment of the present invention two.
In figure: 1 simulation Jiao Lian lane, colliery net, the methane-air premix airbag before 2a, 2b methane below is empty
Gas premix airbag, 3 high frequency flame sensors, 4 high-frequency pressure sensor, 5 electrion spark plugs, 6 high-tension shieldings
Cable, 7 electrion lighters, 8 flare up fire transmission lines, 9 flame data acquisition units, 10 pressure signal transmission
Line, 11 pressure data collectors, 12 data processors, 13 ring flanges.
Detailed description of the invention
The present invention is further elaborated with each embodiment below in conjunction with the accompanying drawings.
Embodiment one is as it is shown in figure 1, a kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast, including mould
Intend Jiao Lian lane, colliery net 1, be set in simulation Jiao Lian lane, colliery net 1 before and after two methane-air premix airbag 2a and 2b, set
It is scheduled on the high frequency flame sensor 3 in net 1 outside wall surface of simulation Jiao Lian lane, colliery and high-frequency pressure sensor 4, one end are stretched into previous
Electrion spark plug 5, another with electrion spark plug 5 by high-tension shielding cable 6 in individual methane-air premix airbag 2a
The electrion lighter 7 that one end is connected, the flame data that are connected with high frequency flame sensor 3 by flare up fire transmission line 8
Harvester 9, the pressure data collector 11 being connected with high-frequency pressure sensor 4 by pressure signal transmission line 10 and flame number
The data processor 12 being connected with pressure data collector 11 according to harvester 9；The high order end of Jiao Lian lane, described simulation colliery net 1 sets
Having a ring flange 13, the center of ring flange 13 is provided with an aperture, and the diameter of aperture is equal to described electrion spark
The external diameter of plug 5, it is pre-that described previous methane-air is stretched into by the aperture of described ring flange 13 in one end of electrion spark plug 5
In mixed airbag 2a；The low order end of Jiao Lian lane, described simulation colliery net 1 opens wide all the time；Former and later two methane-air described premix airbag
Being provided with methane and the air pre-mixing gas of 10% concentration in 2a and 2b, previous methane-air premix airbag 2a is installed in described mould
Intending in the section of tubing of Jiao Lian lane, colliery net 1 high order end, later methane-air premix airbag 2b is installed in described simulation colliery
In the Diagonal branch section of tubing of Jiao Lian lane net 1；The response time of described high frequency flame sensor 3 is less than 5ms, described high frequency pressure
The measurement scope of force transducer 4 is 0～0.6MPa；The ignition energy of described electrion lighter 7 is 20J；Described flame number
It is less than 1ms according to the response time of harvester 9 and pressure data collector 11；Stream crossed by the pipeline of Jiao Lian lane, described simulation colliery net 1
Section is square, and the pipeline flow section of simulation net 1 optional position, Jiao Lian lane, colliery is long-pending the most identical, simulation Jiao Lian lane, colliery net
The pipeline flow section of 1 amasss as 0.04m2, the duct wall face thickness of simulation Jiao Lian lane, colliery net 1 is 12mm；Described high frequency flame
Sensor 3 determines according to pre-set testing program with quantity and the installation position of described high-frequency pressure sensor 4.
Embodiment two is as in figure 2 it is shown, a kind of Jiao Lian lane, colliery net gas of simulating repeats the pilot system of blast, including mould
Intend Jiao Lian lane, colliery net 1, be set in simulation Jiao Lian lane, colliery net 1 before and after two methane-air premix airbag 2a and 2b, set
It is scheduled on the high frequency flame sensor 3 in net 1 outside wall surface of simulation Jiao Lian lane, colliery and high-frequency pressure sensor 4, one end are stretched into previous
Electrion spark plug 5, another with electrion spark plug 5 by high-tension shielding cable 6 in individual methane-air premix airbag 2a
The electrion lighter 7 that one end is connected, the flame data that are connected with high frequency flame sensor 3 by flare up fire transmission line 8
Harvester 9, the pressure data collector 11 being connected with high-frequency pressure sensor 4 by pressure signal transmission line 10 and flame number
The data processor 12 being connected with pressure data collector 11 according to harvester 9；The high order end of Jiao Lian lane, described simulation colliery net 1 sets
Having a ring flange 13, the center of ring flange 13 is provided with an aperture, and the diameter of aperture is equal to described electrion spark
The external diameter of plug 5, it is pre-that described previous methane-air is stretched into by the aperture of described ring flange 13 in one end of electrion spark plug 5
In mixed airbag 2a；The low order end of Jiao Lian lane, described simulation colliery net 1 opens wide all the time；Former and later two methane-air described premix airbag
Being provided with methane and the air pre-mixing gas of 8% concentration in 2a and 2b, previous methane-air premix airbag 2a is installed in described mould
Intending in the section of tubing of Jiao Lian lane, colliery net 1 high order end, later methane-air premix airbag 2b is installed in described simulation colliery
In the lower limb component pipeline of Jiao Lian lane net 1；The response time of described high frequency flame sensor 3 is less than 5ms, described high frequency
The measurement scope of pressure transducer 4 is 0～0.6MPa；The ignition energy of described electrion lighter 7 is 20J；Described flame
The response time of data acquisition unit 9 and pressure data collector 11 is less than 1ms；The pipeline mistake of Jiao Lian lane, described simulation colliery net 1
Flow section is square, and the pipeline flow section of simulation net 1 optional position, Jiao Lian lane, colliery is long-pending the most identical, simulates Jiao Lian lane, colliery
The pipeline flow section of net 1 amasss as 0.04m2, the duct wall face thickness of simulation Jiao Lian lane, colliery net 1 is 12mm；Described high frequency fire
Flame sensor 3 determines according to pre-set testing program with quantity and the installation position of described high-frequency pressure sensor 4.
The present invention is by starting electrion lighter 7, and the electric spark that electrion spark plug 5 is got ignites previous first
Methane-air premixed gas in alkane air pre-mixing airbag 2a, the gas explosion flame front of formation and shock wave are along simulation colliery
Jiao Lian lane net 1 is propagated, after shock wave breaks up later methane-air premix airbag 2b, when the flame front lagging behind shock wave ignites
When later methane-air premixes the methane-air premixed gas in airbag 2b, occurring gas to repeat blast, high frequency flame senses
Gas explosion flare up fire and pressure signal are transmitted to flame data acquisition unit 9 and pressure by device 3 and high-frequency pressure sensor 4 respectively
Force data harvester 11, stores gas by data processor 12 and repeats data of exploding.By to 12 records of data processor
Flame and pressure data analysis, both can further investigate gas initial explosion and ignite the evolution of subsequent explosion, enter accordingly
One step is explored gas and is repeated mechanism and the influence factor of blast, it is also possible to disclose Jiao Lian lane, colliery net when there is gas explosion catastrophe
In the Changing Pattern of distinguished and admirable flowing, set up the discriminant of Jiao Lian lane net wind direction, the prevention and control for coal mine gas from explosion disaster carry
For theoretical direction.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change that the technical staff in territory is made in the essential scope of the present invention, retrofit, add or replace, also should belong to the present invention's
Protection domain.
Claims (4)
1. simulate the pilot system that Jiao Lian lane, colliery net gas repeats to explode for one kind, it is characterised in that: described system includes simulation
Jiao Lian lane, colliery net (1), be set in simulation Jiao Lian lane, colliery net (1) before and after two methane-air premix airbag (2a, 2b),
It is set in the high frequency flame sensor (3) in net (1) outside wall surface of simulation Jiao Lian lane, colliery and high-frequency pressure sensor (4), one end
Stretch into the electrion spark plug (5) in previous methane-air premix airbag (2a), by high-tension shielding cable (6) and high pressure
Electrion lighter (7) that discharge spark plug (5) other end is connected, passed by flare up fire transmission line (8) and high frequency flame
Sensor (3) be connected flame data acquisition unit (9), be connected with high-frequency pressure sensor (4) by pressure signal transmission line (10)
The data processor that is connected with flame data acquisition unit (9) and pressure data collector (11) of pressure data collector (11)
(12)；The high order end in Jiao Lian lane net, described simulation colliery (1) is provided with a ring flange (13), and the centre bit of ring flange (13) installs
Having an aperture, the diameter of aperture is equal to the external diameter of described electrion spark plug (5)；Described electrion spark plug (5)
One end is stretched in described previous methane-air premix airbag (2a) by the aperture of described ring flange (13)；Described simulation colliery
The low order end in Jiao Lian lane net (1) opens wide all the time；It is provided with in former and later two methane-air described premix airbag (2a, 2b) and to have configured
Methane and air pre-mixing gas；The response time of described high frequency flame sensor (3) is less than 5ms, described high-frequency pressure sensor
(4) measurement scope is 0～0.6MPa；The ignition energy of described electrion lighter (7) is 2～100J；Described flame number
It is less than 1ms according to the response time of harvester (9) and pressure data collector (11).Described previous methane-air premix airbag
(2a) after the electric spark that the methane-air premixed gas in is got by described electrion spark plug (5) is ignited, the gas of formation
Explosive flame face and shock wave are propagated along Jiao Lian lane net, described simulation colliery (1), and it is pre-that shock wave breaks up later methane-air
After mixed airbag (2b), when the flame front lagging behind shock wave ignites the methane in described later methane-air premix airbag (2b)
During air pre-mixing gas, gas is occurred to repeat blast, described high frequency flame sensor (3) and described high-frequency pressure sensor (4)
Respectively gas explosion flare up fire and pressure signal are transmitted to described flame data acquisition unit (9) and described pressure data collection
Device (11), stores and analyzes gas by described data processor (12) and repeat data of exploding.
A kind of Jiao Lian lane, colliery net gas of simulating the most according to claim 1 repeats the pilot system of blast, and its feature exists
In: the pipeline flow section in Jiao Lian lane net, described simulation colliery (1) is circular or square, and simulation Jiao Lian lane, colliery net (1) is appointed
The pipeline flow section of meaning position is long-pending the most identical, the pipeline flow section of simulation Jiao Lian lane, colliery net (1) amass be 0.0064～
0.16m2, the duct wall face thickness of simulation Jiao Lian lane, colliery net (1) is 10～20mm.
A kind of Jiao Lian lane, colliery net gas of simulating the most according to claim 1 repeats the pilot system of blast, and its feature exists
Methane concentration in: former and later two methane-air described premix airbag (2a, 2b) in the range of 6～15%, previous methane
Air pre-mixing airbag (2a) is installed in the section of tubing of Jiao Lian lane, described simulation colliery net (1) high order end, and later methane is empty
Gas premix airbag (2b) is installed in the other parts in Jiao Lian lane net, described simulation colliery (1) according to pre-set testing program
In pipeline.
A kind of Jiao Lian lane, colliery net gas of simulating the most according to claim 1 repeats the pilot system of blast, and its feature exists
In the quantity of: described high frequency flame sensor (3) and described high-frequency pressure sensor (4) and installation position according to pre-set
Testing program determine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610802892.6A CN106226353B (en) | 2016-09-05 | 2016-09-05 | Test system for simulating repeated explosion of coal mine corner roadway net gas |
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| CN201610802892.6A CN106226353B (en) | 2016-09-05 | 2016-09-05 | Test system for simulating repeated explosion of coal mine corner roadway net gas |
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| CN106226353B CN106226353B (en) | 2023-09-19 |
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| CN106644350A (en) * | 2016-12-19 | 2017-05-10 | 中国矿业大学(北京) | Experimental device for studying wind current motion state under various disaster-causing factors |
| CN107366546A (en) * | 2017-07-13 | 2017-11-21 | 贵州大学 | A kind of mine ventilation experimental provision for demonstrating angle connection formula ventilation |
| CN112444537A (en) * | 2020-11-13 | 2021-03-05 | 沈阳航空航天大学 | Device and method for testing mine coal dust explosion propagation characteristics of angle joint structure |
| CN112683947A (en) * | 2020-12-30 | 2021-04-20 | 太原理工大学 | Angle coupling structure pipe network explosion simulation test analysis system |
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