CN106971666A - A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform - Google Patents
A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform Download PDFInfo
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Abstract
The present invention provides a kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, including tunnel model main body, longitudinal ventilation smoke evacuation system, transversal ventilation smoke evacuation system, burning things which may cause a fire disaster combustion simulation system and measurement-recording system；The longitudinal ventilation smoke evacuation system is mainly made up of frequency conversion axial flow fan and rectification pipeline section；The transversal ventilation smoke evacuation system is mainly made up of smoke discharging pipe, frequency conversion axle stream smoke exhaust fan, electronic exhaust smoke valve, air supply duct, frequency conversion axle air supply stream blower fan and electric feeding air-valve；The burning things which may cause a fire disaster combustion simulation system includes liquid burning things which may cause a fire disaster combustion simulation system and gas burning things which may cause a fire disaster combustion simulation system；The measurement-recording system includes measuring wind speed record system, smoke temperature measurement record system, smoke components concentration analysis system and video recording device.The present invention can realize the analog study of a variety of tunnel Fire purging modes, be convenient for measuring record flue-gas temperature, composition and concentration, be easy to the smoke discharging effect of the various ventilation smoke exhaust patterns of comparison.
Description
Technical field
The present invention relates to subway tunnel ventilation smoke exhaust technical field, specifically a kind of multi-functional underground railway tunnel fire leads to
Wind purging mode analog study platform.
Background technology
With the propulsion of Re-search on Urbanization process, urban population density is more and more, and surface road congestion be can't bear, each big city
City is building the subway transportation system of oneself, road improvement traffic environment.But underground fire hazard is one unavoidable asks
Topic, especially when subway train generation fire, which runs out of steam, to be rested in running tunnel, because tunnel is long and narrow limited sky
Between, easily cause the intoxication accident of poison gas.Therefore, when occurring fire, if it is possible to which scene of fire is carried out effectively
Ventilation smoke exhaust, effective control is realized to fire smoke, provides safety smokeless environment for evacuating personnel, for reducing subway fire
The casualties of calamity is significant.This is accomplished by studying the flue gas transport property in tunnel fire hazard accordingly.
Research to tunnel fire disaster fume transport property at this stage is mainly studied by full-scale tunnel experiment, small size
What model investigation and numerical simulation study these three methods were carried out.Wherein, full-scale experiment research preparatory period length,
Repeatability is poor, capital consumption amount is big, and numerical simulation study generally requires experimental data and carries out contrast verification, therefore, can
Reproducible, experimental period, short, with a high credibility small-scale model experimental study was just essential as tunnel fire hazard researcher.
Understood according to investigation, some domestic scientific research institutions have been set up some tunnel model experimental benches, such as Chinese science skill
Art university SKLFS possesses a length 72m, height 1.30m, width 1.50m square-section tunnel
Model experiment platform, is mainly used to study the smoke discharging effect of the longitudinal ventilation purging mode of Extra-long Highway Tunnel；Central South University sets up
The length of tunnel model experimental bench of horseshoe shaped section although reach 52.5m, but the sectional area of the experimental bench only has
0.65m2, arc top maximum height is 0.70m, and model width of roadway is 1.10m, is mainly used to research Extra-long Highway Tunnel main body and indulges
To ventilation smoke exhaust pattern and the validity of emphasis ventilation smoke exhaust pattern；The Mechanical Academy of Southwest Jiaotong University establishes a ratio
For 1:15th, length be 15m, be highly 0.32m, the rectangle vcehicular tunnel agent model that width is 0.70m, using gas burning things which may cause a fire disaster,
It is mainly used to study the validity of vcehicular tunnel vertical shaft purging mode；Wuhan University establishes one 1:20 small size arc top tunnel
Road rig for model test, the tunnel model width of roadway is 0.465m, and arc heights of roofs is 0.322m, and total length only has 13m.In addition,
JaeSeongRoh of South Korea et al. also establishes one 1:20 arc top tunnel model experimental bench, the height and width of the testing stand
Degree is 0.40m, and length only has 10m, and the one end in tunnel is provided with frequency conversion axial flow fan, can only be used for analog study tunnel longitudinal direction
The effect of ventilation smoke exhaust pattern.
By above-mentioned investigation, also there are some needs improvedly in small-scale model experiment research platform at this stage
Side：
(1) ventilation smoke exhaust pattern is single
Existing tunnel fire hazard analog platform can only largely realize a kind of analog study of ventilation smoke exhaust mode, otherwise it is single
Pure natural ventilation smoke, otherwise the smoke evacuation of simple longitudinal ventilation, it is few can be by a variety of ventilation smoke exhaust Mode integratings to one
The research platform of body.
(2) tunnel model size is less than normal
Most tunnel model by experimental site due to being limited outside Current Domestic, and length is substantially all in 10m
In the range of left and right.In fact, the size of tunnel model has important influence for analog result.Undersized tunnel mould
Type is difficult to meet some important similarity criterions, and cross-sectional area is too small to influence the turbulence structure of flue gas, change smoke movement
Field Characteristics；Length is too small then can not smoke movement situation of the analog study at burning things which may cause a fire disaster farther out position.
(3) burning things which may cause a fire disaster combustion simulation mode is single
The burning of food tray simulation fire source is used existing tunnel fire hazard analog platform more.But the heat release work(of food tray burning things which may cause a fire disaster
Rate is mainly determined by the area of fuel type and food tray, it is impossible to realize continuously adjusting for fire source power, is needed in experiment repeatedly more
Change burning things which may cause a fire disaster food tray.
(4) ventilation wind speed control accuracy is low
Most tunnel fire hazard analog platform is shorter due to length, is generally not provided with the whole of rectification pipeline section or setting
Flow tube segment length is not enough so that the longitudinal ventilation speed of application is unstable, skewness, so as to influence ventilation smoke exhaust effect
Analog study result.
The content of the invention
It is an object of the invention to provide a kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research is flat
Platform, makes up the deficiency of the platform of tunnel fire hazard analog study at this stage, realizes the analog study of different types of ventilation smoke exhaust pattern,
Simple to operate, safe and reliable, favorable repeatability, effect is obvious.
The technical scheme is that：
A kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, including tunnel model main body,
Longitudinal ventilation smoke evacuation system, transversal ventilation smoke evacuation system, semi-transverse ventilation smoke evacuation system, burning things which may cause a fire disaster combustion simulation system and measurement
Record system；
The longitudinal ventilation smoke evacuation system is mainly made up of frequency conversion axial flow fan and rectification pipeline section；The frequency conversion axial flow fan
Air outlet connected with one end of rectification pipeline section, the other end of the rectification pipeline section passes through detachable interface and tunnel model main body
Connection；
The transversal ventilation smoke evacuation system is main by smoke discharging pipe, frequency conversion axle stream smoke exhaust fan, electronic exhaust smoke valve, air-supply
Pipeline, frequency conversion axle air supply stream blower fan and electric feeding air-valve are constituted；The smoke discharging pipe is by being arranged on tunnel model main body internal upper part
Ceiling and tunnel model body top between space constitute；The frequency conversion axle stream smoke exhaust fan has two, is separately mounted to
The two ends exit of smoke discharging pipe；The electronic exhaust smoke valve has several, be separately mounted to equidistantly to open up on ceiling each
At exhaust opening；The air supply duct is by being arranged in tunnel model main body between the bottom plate of bottom and tunnel model bottom part body
Space is constituted；The frequency conversion axle air supply stream blower fan has two, is separately mounted at the two ends import of air supply duct；The electric feeding
Air-valve has several, is separately mounted at each air outlet for equidistantly being opened up on bottom plate；
The semi-transverse ventilation smoke evacuation system is main by smoke discharging pipe, frequency conversion axle stream smoke exhaust fan and electronic exhaust smoke valve structure
Into；The smoke discharging pipe, frequency conversion axle stream smoke exhaust fan and electronic exhaust smoke valve are transversal ventilation smoke evacuation system and semi-transverse ventilation
Smoke evacuation system is shared, i.e., described semi-transverse ventilation smoke evacuation system is a part for transversal ventilation smoke evacuation system；
The burning things which may cause a fire disaster combustion simulation system includes liquid burning things which may cause a fire disaster combustion simulation system and gas burning things which may cause a fire disaster combustion simulation system；
It is dense that the measurement-recording system includes measuring wind speed record system, smoke temperature measurement record system, smoke components
Spend analysis system and video recording device.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the tunnel model main body
Connected and composed by some dismountable circular cross-sectional cavity units of section, the leading flank of each section chamber unit is mounted on a song
Face toughened glass window, the curved strengthened glass window is outwardly opened from top to bottom.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the frequency conversion axial flow fan
Cross-sectional area be more than the cross-sectional area of tunnel model main body, the frequency conversion axial flow fan passes through reducing pipe and rectification pipeline section and connected
Logical, the length of the rectification pipeline section is more than 3m.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the liquid burning things which may cause a fire disaster burning
The main electronic balance by the food tray bracket for placing food tray, for measuring record liquid fuel quality in real time of simulation system and
Computer is constituted, and one end of the food tray bracket is placed on electronic balance, and the other end stretches into tunnel model body interior, the electricity
The output end of sub- balance and the input of computer are connected.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the gas burning things which may cause a fire disaster burning
Simulation system is main by being arranged on the multi-orifice burner of tunnel model body interior and being arranged on tunnel model body exterior
Gas flowmeter, pressure-reducing valve and fuel gas bomb are constituted, and the gas flowmeter is connected with multi-orifice burner, the fuel gas storage
Bottle is connected by pressure-reducing valve with gas flowmeter.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the measuring wind speed record
System is mainly by being arranged on the removable wind speed probe tree of tunnel model body interior and close rectification pipeline section and being arranged on tunnel
Wind speed Acquisition Instrument and computer outside road die body are constituted, and the output end of the removable wind speed probe tree is gathered by wind speed
The input connection of instrument and computer.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the smoke temperature measurement
The main removable thermocouple tree by being arranged on tunnel model body interior of record system, the thermoelectricity along genesis analysis on the downside of ceiling
Amphitene battle array and the temperature sensor and computer composition, the removable thermocouple tree and heat for being arranged on tunnel model body exterior
The output end of galvanic couple linear array is connected by the input of temperature sensor and computer.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the smoke components concentration
Analysis system is main by being arranged on the removable smoke collecting bar of tunnel model body interior and being arranged on tunnel model main body
Outside flue gas analyzer and computer are constituted, and the output end of the removable smoke collecting bar passes through flue gas analyzer and computer
Input is connected.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the video recording device
Mainly be made up of the laser light sheet and video recorder for being arranged on tunnel model body exterior, the laser light sheet be used for
Tunnel model body interior launches sheet laser clearly to show the Field Characteristics of smoke movement during ventilation smoke exhaust, described to regard
Frequency recorder is used for the Field Characteristics of smoke movement during the state and ventilation smoke exhaust of record fire simulation experiment in real time.
Described multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, the tunnel model main body
Length be more than 30m.
Beneficial effects of the present invention are：
As shown from the above technical solution, the degree of modularity of the present invention is high, simple to operate, multiple functional, compensate for conventional tunnel
The single deficiency of road fire disaster simulation research platform ventilation smoke exhaust pattern, it is possible to achieve natural ventilation smoke, longitudinal ventilation are discharged fume, entirely
Fire Ventilation purging mode in a variety of subway sectional tunnels such as transversal ventilation smoke evacuation, semi-transverse ventilation smoke evacuation, emphasis ventilation smoke exhaust
Analog study；At the same time, the cross-sectional area of tunnel model main body of the invention is sufficiently large, length long enough, completely can be with
The correct simulation of ventilation smoke exhaust when realizing fire, and tunnel model main body leading flank all using resistant to elevated temperatures tempering glass
Glass, visual good, the motion feature and flow field structure of very convenient observed and recorded fire smoke are convenient for measuring record flue gas temperature
Degree, composition and concentration, are easy to the smoke discharging effect of the various ventilation smoke exhaust patterns of comparison.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the tunnel model main body schematic diagram of the present invention；
Fig. 3 is the burning things which may cause a fire disaster combustion simulation system schematic of the present invention, wherein, Fig. 3 (a) is liquid burning things which may cause a fire disaster combustion simulation system
Schematic diagram, Fig. 3 (b) is gas burning things which may cause a fire disaster combustion simulation system schematic；
Fig. 4 is the measuring wind speed record system schematic diagram of the present invention；
Fig. 5 is the smoke temperature measurement record system schematic diagram of the present invention；
Fig. 6 is the smoke components concentration analysis system schematic of the present invention.
Embodiment
Below in conjunction with the accompanying drawings the present invention is further illustrated with specific embodiment.
As shown in Fig. 1~Fig. 6, a kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, bag
Include tunnel model main body 1, longitudinal ventilation smoke evacuation system, transversal ventilation smoke evacuation system, semi-transverse ventilation smoke evacuation system, burning things which may cause a fire disaster combustion
Burn simulation system and measurement-recording system.
Tunnel model main body 1 is fixed on testing stand support 0, is connected by some dismountable circular cross-sectional cavity units of section
Constitute, the leading flank of each section chamber unit is mounted on a resistant to elevated temperatures curved strengthened glass window 1-1, convenient observation flue gas
The Field Characteristics of motion, it is easy to record the effect of ventilation smoke exhaust, and curved strengthened glass window 1-1 can be outside from top to bottom
Open, some detection instruments and equipment inside convenient arrangement or replacing tunnel model main body 1.It is each section chamber unit it is upper,
Downside and trailing flank are made of fire-proof board, and corresponding encapsulation process is carried out at all gaps, tunnel model master is prevented
Body 1 leaks out leakage cigarette.The length of each section chamber unit is 5m, and 10 section chamber units can constitute 50m tunnel model main body, press
According to 1:5 ratio, can simulate the subway sectional tunnel of 250m length.
Longitudinal ventilation smoke evacuation system is mainly made up of frequency conversion axial flow fan 2-1, reducing pipe 2-2 and rectification pipeline section 2-3, frequency conversion
Axial flow blower 2-1 cross-sectional area is more than the cross-sectional area of tunnel model main body 1, and frequency conversion axial flow fan 2-1 air outlet passes through
Reducing pipe 2-2 is connected with rectification pipeline section 2-3 one end, and the rectification pipeline section 2-3 other end passes through detachable interface and tunnel model
Main body 1 is connected.Rectification pipeline section 2-3 length will at least have 3m, frequency conversion axial flow fan 2-1 to change by changing the rotating speed of impeller
The size of air outlet wind speed, after reducing pipe 2-2 and rectification pipeline section 2-3 rectification processing, is carried into tunnel model main body 1
For uniform and stable longitudinal ventilation.
Transversal ventilation smoke evacuation system is main by smoke discharging pipe 3-1, frequency conversion axle stream smoke exhaust fan 3-2, electronic exhaust smoke valve 3-
3rd, air supply duct 3-4, frequency conversion axle air supply stream blower fan 3-5 and electric feeding air-valve 3-6 are constituted.Smoke discharging pipe 3-1 is by being arranged on tunnel
Space between the ceiling of the internal upper part of die body 1 and the top of tunnel model main body 1 is constituted.Frequency conversion axle stream smoke exhaust fan 3-2 has
Two, it is separately mounted to smoke discharging pipe 3-1 two ends exit.Electronic exhaust smoke valve 3-3 has several, is separately mounted on ceiling
At each exhaust opening equidistantly opened up.Air supply duct 3-4 is by being arranged on the bottom plate of bottom and tunnel mould in tunnel model main body 1
Space between the bottom of type main body 1 is constituted.Frequency conversion axle air supply stream blower fan 3-5 has two, is separately mounted to the two of air supply duct 3-4
Hold at import.Electric feeding air-valve 3-6 has several, is separately mounted at each air outlet for equidistantly being opened up on bottom plate.It is electronic
Exhaust smoke valve 3-3 and electric feeding air-valve 3-6 can be achieved Electronic control and be automatically opened or closed.
Semi-transverse ventilation smoke evacuation system is main by smoke discharging pipe 3-1, frequency conversion axle stream smoke exhaust fan 3-2 and electronic exhaust smoke valve 3-
3 are constituted.Smoke discharging pipe 3-1, frequency conversion axle stream smoke exhaust fan 3-2 and electronic exhaust smoke valve 3-3 are transversal ventilation smoke evacuation system and half
Transversal ventilation smoke evacuation system is shared, i.e., semi-transverse ventilation smoke evacuation system is a part for transversal ventilation smoke evacuation system.
Burning things which may cause a fire disaster combustion simulation system is divided into two classes：Liquid burning things which may cause a fire disaster combustion simulation system and gas burning things which may cause a fire disaster combustion simulation system.
Wherein, liquid burning things which may cause a fire disaster combustion simulation system is main by the food tray bracket 4-1 for placing food tray, for measuring record liquid in real time
The electronic balance 4-2 and computer 10 of fuel mass are constituted, and food tray bracket 4-1 one end is placed on electronic balance 4-2, the other end
Stretch into inside tunnel model main body 1, electronic balance 4-2 output end is connected with the input of computer 10, by changing different chis
Very little food tray and liquid fuel, it is possible to achieve the simulated combustion under the conditions of different fire source powers, and record fire can be measured in real time
Mass loss when source is burnt；The main porous combustion by being arranged on inside tunnel model main body 1 of gas burning things which may cause a fire disaster combustion simulation system
Burner 5-1 and the gas flowmeter 5-2 being arranged on outside tunnel model main body 1, pressure-reducing valve 5-3 and fuel gas bomb 5-4 structures
Into gas flowmeter 5-2 is connected with multi-orifice burner 5-1, and fuel gas bomb 5-4 passes through pressure-reducing valve 5-3 and gas flowmeter 5-2
Connection, the speed of supply fuel gas can be adjusted by adjusting gas flow meter 5-2, under the conditions of realizing different fire source powers
Simulated combustion, it is possible to realize fire source power continuously adjusting within the specific limits.
Measuring wind speed record system is main by being arranged on the inside of tunnel model main body 1 and close to the removable of rectification pipeline section 2-3
Dynamic wind speed probe tree 6-1 and the wind speed Acquisition Instrument 6-2 and computer 10 that are arranged on outside tunnel model main body 1 are constituted.It is removable
Wind speed probe tree 6-1 output end is connected by wind speed Acquisition Instrument 6-2 with the input of computer 10, it is possible to achieve tunnel model master
The real-time measurement record of the inside longitudinal ventilation of body 1.Removable wind speed probe tree 6-1 is in " rice " type, it is possible to achieve tunnel model master
The accurate measurement of longitudinal ventilation wind speed on the cross section of body 1.
Smoke temperature measurement record system it is main by be arranged on removable thermocouple tree 7-1 inside tunnel model main body 1,
Along genesis analysis on the downside of ceiling thermocouple linear array 7-2 and be arranged on tunnel model body exterior temperature sensor 7-3 and
Computer 10 is constituted.Removable thermocouple tree 7-1 output end and thermocouple linear array 7-2 output end pass through temperature sensor 7-3
It is connected with the input of computer 10, temperature sensor 7-3 selects 7018 temperature collect modules, it is possible to achieve tunnel model main body 1
The real-time measurement record of the vertical flue-gas temperature in space and ceiling flue-gas temperature.Thermocouple is vertical in removable thermocouple tree 7-1
Spacing is generally no greater than 10cm, and multiple removable thermocouple tree 7-1 can be placed inside tunnel model main body 1.On the downside of ceiling
Thermocouple linear array 7-2 apart from the distance of ceiling be 5cm, the spacing in thermocouple linear array 7-2 between two neighboring thermocouple is not
More than 25cm.
The main removable smoke collecting bar 8- by being arranged on inside tunnel model main body 1 of smoke components concentration analysis system
1 and the flue gas analyzer 8-2 and computer 10 that are arranged on outside tunnel model main body 1 constitute.Removable smoke collecting bar 8-1's
Output end is connected by flue gas analyzer 8-2 with the input of computer 10, it is possible to achieve the inside multiple spot position of tunnel model main body 1
Fire smoke composition analysis and the measurement of concentration, and record corresponding data in real time.
Main laser light sheet 9-2 and the video recorder by being arranged on outside tunnel model main body 1 of video recording device
9-3 is constituted.Laser light sheet 9-2 is placed on sheet laser support 9-1, and sheet laser support 9-1 is fixed on testing stand support 0.
Laser light sheet 9-2 can clearly show flue gas during ventilation smoke exhaust to the internal emission sheet laser of tunnel model main body 1
The Field Characteristics of motion.Video recorder 9-3 can be recorded during the state and ventilation smoke exhaust of fire simulation experiment in real time
The Field Characteristics of smoke movement.
The operation principle of the present invention；
(1) course of work of longitudinal ventilation purging mode analog study is as follows：
It is first turned on the phenomenon in video recorder 9-3, record whole experiment process.Burnt in experiment using gas burning things which may cause a fire disaster
Simulation tunnel fire, opens fuel gas bomb 5-4 valve, adjusts pressure-reducing valve 5-3 and gas flowmeter 5-2, lights porous combustion
Burner 5-1 starts simulated combustion.Frequency conversion axial flow fan 2-1 rotating speed is adjusted, provides uniform and stable into tunnel model main body 1
Longitudinal ventilation.Then the wind speed of measuring wind speed record system measurement record longitudinal ventilation is opened, smoke temperature measurement record is opened
Systematic survey records the temperature of flue gas, opens the composition and concentration of smoke components concentration analysis network analysis record heat smoke
Value.After flow field stabilization Deng heat smoke, the smoke discharging effect of longitudinal ventilation is observed, record heat smoke spreads adverse current to burning things which may cause a fire disaster upstream
Length.Adjusting gas flow meter 5-2 changes the size of fire source power, and regulation frequency conversion axial flow fan 2-1 rotating speed changes longitudinal direction
The smoke discharging effect of longitudinal ventilation purging mode under the conditions of the speed of ventilation, analog study difference fire source power.
(2) course of work of transversal ventilation purging mode analog study is as follows：
Needed longitudinal ventilation smoke evacuation system in transversal ventilation purging mode analog study from a left side for tunnel model main body 1
End is disassembled, and left end formation one is naturally open.It is first turned on showing in video recorder 9-3, record whole experiment process
As.Then Electronic control opens all electronic exhaust smoke valve 3-3 and electric feeding air-valve 3-6.Liquid burning things which may cause a fire disaster burning mould is used in experiment
Intend tunnel fire hazard, adding liquid fuel in food tray, food tray is placed on food tray bracket 4-1, food tray is lighted and starts simulated combustion.Adjust
Frequency conversion axle air supply stream blower fan 3-5 rotating speed is saved, is blown by air supply duct 3-4 into tunnel model main body 1.Adjust frequency conversion axle stream
Smoke exhaust fan 3-2 rotating speed, is discharged fume by smoke discharging pipe 3-1 from tunnel model main body 1.Open smoke temperature measurement record system
Unified test amount records the temperature of flue gas.After flow field stabilization Deng heat smoke, the smoke discharging effect of transversal ventilation is observed, hot cigarette is recorded
Gas spreads the scope of diffusion.Change various sizes of food tray and liquid fuel changes the size of fire source power, adjust frequency conversion axle
Air supply stream blower fan 3-5 and frequency conversion axle stream smoke exhaust fan 3-2 rotating speed change the speed of transversal ventilation smoke evacuation, and analog study is different
The smoke discharging effect of transversal ventilation purging mode under the conditions of fire source power.
(3) course of work of semi-transverse ventilation purging mode analog study is as follows：
Needed longitudinal ventilation smoke evacuation system in semi-transverse ventilation purging mode analog study from a left side for tunnel model main body 1
End is disassembled, and left end formation one is naturally open.It is first turned on showing in video recorder 9-3, record whole experiment process
As.Then Electronic control opens all electronic exhaust smoke valve 3-3.Liquid burning things which may cause a fire disaster combustion simulation tunnel fire hazard is used in experiment, in oil
Adding liquid fuel in food tray, food tray is placed on disc holder 4-1, food tray is lighted and starts simulated combustion.Adjust the smoke evacuation of frequency conversion axle stream
Blower fan 3-2 rotating speed, is discharged fume by smoke discharging pipe 3-1 from tunnel model main body 1, and both ends open forms nature and mends wind.Open
The temperature of smoke temperature measurement record system measurement record flue gas.After flow field stabilization Deng heat smoke, semi-transverse ventilation is observed
Smoke discharging effect, record heat smoke spreads the scope of diffusion.Change various sizes of food tray and liquid fuel changes burning things which may cause a fire disaster work(
The size of rate, regulation frequency conversion axle stream smoke exhaust fan 3-2 rotating speed changes the speed of semi-transverse ventilation smoke evacuation, the different fire of analog study
The smoke discharging effect of semi-transverse ventilation purging mode under the conditions of source power.
(4) course of work of emphasis ventilation smoke exhaust pattern simulation research is as follows：
Needed longitudinal ventilation smoke evacuation system in the research of emphasis ventilation smoke exhaust pattern simulation from the left end of tunnel model main body 1
Disassemble, left end formation one is naturally open.It is first turned on the phenomenon in video recorder 9-3, record whole experiment process.
Then Electronic control opens the electronic exhaust smoke valve 3-3 in part being located above burning things which may cause a fire disaster.Liquid burning things which may cause a fire disaster combustion simulation tunnel is used in experiment
Road fire, adding liquid fuel in food tray, food tray is placed on food tray bracket 4-1, food tray is lighted and starts simulated combustion.Regulation becomes
Frequency axle stream smoke exhaust fan 3-2 rotating speed, is discharged fume, both ends open forms nature by smoke discharging pipe 3-1 from tunnel model main body 1
Mend wind.Open the temperature of smoke temperature measurement record system measurement record flue gas.After flow field stabilization Deng heat smoke, observation weight
The effect of point ventilation smoke exhaust, record heat smoke spreads the scope of diffusion.Change various sizes of food tray and liquid fuel changes
The size of fire source power, regulation frequency conversion axle stream smoke exhaust fan 3-2 rotating speed changes the speed of emphasis ventilation smoke exhaust, changes electronic row
The smoke discharging effect of emphasis ventilation smoke exhaust pattern under the conditions of the quantity that cigarette valve 3-3 is opened, analog study difference fire source power.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (10)
1. a kind of multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform, it is characterised in that：Including tunnel
Die body, longitudinal ventilation smoke evacuation system, transversal ventilation smoke evacuation system, semi-transverse ventilation smoke evacuation system, burning things which may cause a fire disaster combustion simulation
System and measurement-recording system；
The longitudinal ventilation smoke evacuation system is mainly made up of frequency conversion axial flow fan and rectification pipeline section；The frequency conversion axial flow fan goes out
Air port is connected with one end of rectification pipeline section, and the other end of the rectification pipeline section is connected by detachable interface and tunnel model main body
It is logical；
The transversal ventilation smoke evacuation system is main by smoke discharging pipe, frequency conversion axle stream smoke exhaust fan, electronic exhaust smoke valve, ajutage
Road, frequency conversion axle air supply stream blower fan and electric feeding air-valve are constituted；The smoke discharging pipe is by being arranged on tunnel model main body internal upper part
Space between ceiling and tunnel model body top is constituted；The frequency conversion axle stream smoke exhaust fan has two, the row of being separately mounted to
The two ends exit of smoke pipeline；The electronic exhaust smoke valve has several, is separately mounted to each row equidistantly opened up on ceiling
At mouth；The air supply duct is by the sky that is arranged in tunnel model main body between the bottom plate of bottom and tunnel model bottom part body
Gap is constituted；The frequency conversion axle air supply stream blower fan has two, is separately mounted at the two ends import of air supply duct；The powered supplied air
Valve has several, is separately mounted at each air outlet for equidistantly being opened up on bottom plate；
The semi-transverse ventilation smoke evacuation system is mainly made up of smoke discharging pipe, frequency conversion axle stream smoke exhaust fan and electronic exhaust smoke valve；Institute
It is transversal ventilation smoke evacuation system and semi-transverse ventilation smoke evacuation system to state smoke discharging pipe, frequency conversion axle stream smoke exhaust fan and electronic exhaust smoke valve
System is shared, i.e., described semi-transverse ventilation smoke evacuation system is a part for transversal ventilation smoke evacuation system；
The burning things which may cause a fire disaster combustion simulation system includes liquid burning things which may cause a fire disaster combustion simulation system and gas burning things which may cause a fire disaster combustion simulation system；
The measurement-recording system includes measuring wind speed record system, smoke temperature measurement record system, smoke components concentration point
Analysis system and video recording device.
2. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The tunnel model main body is connected and composed by some dismountable circular cross-sectional cavity units of section, each section chamber list
The leading flank of member is mounted on a curved strengthened glass window, and the curved strengthened glass window is outwardly opened from top to bottom.
3. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The cross-sectional area of the frequency conversion axial flow fan is more than the cross-sectional area of tunnel model main body, the frequency conversion axial flow fan
Connected by reducing pipe with rectification pipeline section, the length of the rectification pipeline section is more than 3m.
4. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The liquid burning things which may cause a fire disaster combustion simulation system is main by the food tray bracket for placing food tray, for measuring record in real time
The electronic balance and computer of liquid fuel quality are constituted, and one end of the food tray bracket is placed on electronic balance, and the other end is stretched
Enter tunnel model body interior, the output end of the electronic balance and the input of computer are connected.
5. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The gas burning things which may cause a fire disaster combustion simulation system is main by being arranged on the multi-orifice burner of tunnel model body interior and setting
The gas flowmeter in tunnel model body exterior, pressure-reducing valve and fuel gas bomb is put to constitute, the gas flowmeter with it is porous
Burner is connected, and the fuel gas bomb is connected by pressure-reducing valve with gas flowmeter.
6. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The measuring wind speed record system is main by being arranged on tunnel model body interior and close to the removable of rectification pipeline section
Wind speed probe tree and the wind speed Acquisition Instrument and computer composition for being arranged on tunnel model body exterior, the removable wind speed probe
The output end of tree is connected by the input of wind speed Acquisition Instrument and computer.
7. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The main removable thermocouple tree by being arranged on tunnel model body interior of the smoke temperature measurement record system,
Along genesis analysis on the downside of ceiling thermocouple linear array and be arranged on the temperature sensor and computer structure of tunnel model body exterior
Into the output end of the removable thermocouple tree and thermocouple linear array is connected by the input of temperature sensor and computer.
8. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The main removable smoke collecting bar by being arranged on tunnel model body interior of the smoke components concentration analysis system
And it is arranged on the flue gas analyzer and computer composition of tunnel model body exterior, the output end of the removable smoke collecting bar
Connected by the input of flue gas analyzer and computer.
9. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The main laser light sheet and video recorder structure by being arranged on tunnel model body exterior of the video recording device
Into the laser light sheet is used to launch sheet laser clearly to show cigarette during ventilation smoke exhaust to tunnel model body interior
The dynamic Field Characteristics of fate, the video recorder is used for the state and ventilation smoke exhaust process for recording fire simulation experiment in real time
The Field Characteristics of middle smoke movement.
10. multi-functional underground railway tunnel fire ventilation smoke exhaust pattern simulation research platform according to claim 1, it is special
Levy and be：The length of the tunnel model main body is more than 30m.
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