CN103761918B - Skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect - Google Patents
Skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect Download PDFInfo
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- CN103761918B CN103761918B CN201410043825.1A CN201410043825A CN103761918B CN 103761918 B CN103761918 B CN 103761918B CN 201410043825 A CN201410043825 A CN 201410043825A CN 103761918 B CN103761918 B CN 103761918B
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Abstract
The present invention provides skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect, it can at laboratory simulation fire of high-rise building combustion case, skyscraper stairwell and Regularity of Smoke Movement during vertical shaft and control system under research external wind effect, including laboratory table main body, removable air curtain system and supporting TT&C system；The present invention is in experimental measurement system, advanced complete temperature, speed, pressure and radiant heat flow measuring system, fume component analysis system, flow field survey system, flow of flue gas parameter and cigarette control effect can be carried out omnibearing observation and research by observation system etc..In experimental cost, this small-scale experiment platform is compared large-sized laboratory table and is expended few, repeatable strong, easy to operate, simultaneously accuracy height compared with computer simulation method.
Description
Technical field
The present invention relates to technical field of fire hazard safety, be specifically related to skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect.
Background technology
Along with increasing of economic development and the size of population, more and more skyscrapers stand erect among city, and corresponding fire safety evaluating problem has caused the extensive concern of people.During high-rise building with fire disaster, high-temperature flue gas is entered into the vertical passageway such as stairwell or vertical shaft crept up other floor of skyscraper by room, corridor, cup, has a strong impact on the safe escape of personnel.Such as, in November, 2010, the high residential building breaking out of fire of teacher apartment, Jing'an District, Shanghai one, cause that 58 people are dead, more than 70 people are injured.Many researchers show, in fire incident, most of personnel death is caused by high-temperature flue gas, therefore, the Regularity of Smoke Movement of the vertical passageway such as skyscraper stairwell and vertical shaft and smoke control scheme and fire spread rule are studied very meaningful for the overall fire safety evaluating ensureing skyscraper and be necessary.
For flow of flue gas and the control of stairwell and vertical shaft, Chinese scholars has been carried out Related Experimental Study.Tanaka utilizes the vertical shaft laboratory table (square cross section, length 0.8m and 0.4m two kinds) of high 3m to have studied the rise time of flue gas forward and the relation of fire source power.Mercier utilizes the vertical shaft laboratory table (square cross section, length 1m) of high 4m, and by changing hoistway entrance air velocity, research different Reynolds number and grashof number are on the impact of smoke movement state in vertical shaft.Zhang Jingyan utilizes 1/8 size vertical shaft laboratory table (high 2.4m), have studied the plume rise time under different fire source power.Marshall utilizes the 5 floor stair shaft experimental provisions (laboratory table height 3.3m) of 1/5 size, measures the flue-gas temperature in stairwell laboratory table.Sun Xiaoqian utilizes the 12 floor stair shaft experimental provisions (laboratory table height 12.2m) of 1/3 size, have studied smoke movement rule and control program in stairwell.The above experimental provision is all carry out related experiment under being left out external wind situation, but for actual skyscraper, it is usually present bigger external wind, stairwell and vertical shaft inside smoke are moved and have material impact by external wind, only it is by CFD numerical simulation study both at home and abroad at present, it does not have carry out the experimentation that system is deep.
Full-scale fire test needs to transfer substantial amounts of human and material resources and financial resources, and additionally experiment condition is difficult to control to, affected by various factors greatly, repeatable poor, therefore, for carrying out lot of experiments, finding out the rule wherein existed, full-scale experiment device is not a kind of well selection.
Summary of the invention
It is an object of the invention to provide skyscraper stairwell (vertical shaft) fire test analog under a kind of external wind effect, can at laboratory simulation fire of high-rise building combustion case, Regularity of Smoke Movement when studying skyscraper stairwell and vertical shaft under external wind effect and control system
The technical solution used in the present invention is:
Skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect, including laboratory table main body, removable air curtain system and supporting TT&C system；
Described laboratory table main body, is the BUILDINGS MODELS proportional with actual skyscraper actual size, the building element such as including stairwell, vertical shaft, cup, room, corridor.Overall employing steel plate is built, and welded seal forms, and its external door and window adopt the mode that is opened flat, and do elevated-temperature seal process, so as to reach sealing effectiveness when closing；Laboratory table main body rack adopts angle steel to build；The front side of laboratory table main body all adopts safety glass exterior wall, and described safety glass is convenient observes building interior experimentation and phenomenon, also does elevated-temperature seal and process between this safety glass and described angle steel；In other sides of laboratory table main body and stairwell, stair step forms by fire resistant plate (liner) and steel plate；The building elements such as stairwell, vertical shaft, cup, room, corridor all have opening, it is possible to by square flange UNICOM.
Described removable air curtain system, forms including air curtain support, bracket bottom head sheave, blower fan, air channel, electric block steel wire rope, electric block pulley etc.；Described air curtain support adopts angle steel to build, and described support bottom wheel, for horizontal direction moving air curtain system.Described air channel adopts steel plate to build, and welded seal forms；Described electric block steel wire rope and pulley are used for regulating blower fan and air channel height；
Described supporting TT&C system, measures system, gas radiation heat-flow measurement system including flame and smoke temperature measurement system, wind velocity measurement system, pressure-measuring system, fume component analysis system, flue gas flow field；Described flame and smoke temperature measurement system include a string vertical thermocouple and cup, room and corridor internal thermocouples array in the middle of stairwell and vertical shaft；Described wind velocity measurement system includes being arranged in window place on the left of stairwell and vertical shaft and cup, room, the high temperature wind speed probe array at doorway, corridor place and the data processing equipment being connected with its signal of telecommunication；Described pressure-measuring system includes the pressure probe being arranged within stairwell and vertical shaft and the data processing equipment being connected with its signal of telecommunication；Described fume component analysis system includes the smoke components measuring probe being arranged within stairwell and vertical shaft and the data processing equipment being connected with its signal of telecommunication；Described flue gas flow field measures the laser light sheet that system includes being arranged in stairwell and silo bottom and laboratory table right openings, arranges video camera in laboratory table front, with the flow of flue gas situation on observation experiment platform internal sheet bright finish.The data processing equipment that the radiation heatflowmeter that described gas radiation heat-flow measurement system includes being arranged on stairwell and vertical shaft wall is connected with its signal of telecommunication.
Wherein, described stairwell and vertical shaft can be connected in free combination by components such as square flange and cup, room, corridors, meet different experiments demand.
Wherein, described laboratory table is built in the ratio of the 1:6 of actual building, is divided into 6 layers, described stairwell, vertical shaft, cup, room, corridor side wall have the opening that can freely close, it is also possible to arrange measurement apparatus and cleaning experiment platform in experimenter.
Wherein, described stairwell, vertical shaft, cup, room, corridor wall all have and are made up of fire resistant plate (liner) and steel plate, and build wall heat transfer situation with reality similar, and experimental result is more accurate.
Wherein, described removable air curtain system not only position can move freely, and blower fan and air channel height can freely regulate, the pillar of support plays fixing and supporting role, pillar has U-shaped sulculus, air channel is contacted by pulley with U-shaped sulculus, reduces the frictional force that blower fan is upper and lower, increases the stability of blower fan motion.U-shaped sulculus there is aperture, after blower fan is risen to the height of needs, inside the aperture being inserted under air curtain on U-shaped sulculus by safety rod, in case wire cable rupture, increases safety.Air curtain height adjustable scope 0-3.8m.
Wherein, the wind speed size of described removable air curtain system regulates by changing blower fan frequency, wind speed range 0-8m/s.
Wherein, described removable air curtain system air channel is internal places the PVC plastic pipe that diameter is 1cm, the long 70cm of plastic conduit, can be evenly arranged in inside air channel by plastic conduit, constitute rectification section, make air flow out from rectification section uniformly, thus ensureing to provide stable extraneous wind speed.
Wherein, described burning things which may cause a fire disaster can be located at the bottom surface in stairwell, vertical shaft, cup, room and corridor.
Wherein, described burning things which may cause a fire disaster can adopt the actual combustibles of multiple standards fuel simulation such as normal heptane, methanol, grillage, liquefaction fire.
Wherein, described burning things which may cause a fire disaster may be used without methanol fire, utilize the smoke particle simulation by tracing fire smoke that cake produces, cake keeps certain distance with methanol food tray, during experiment, first lights cake, then methanol is lighted, entrainmenting air during methanol burning, the buoyancy of generation is ordered about the flue gas that cake produces and flow in laboratory table, can comparatively clearly the simulated fire flue gas situation that spreads in skyscraper and from stairwell and vertical shaft the process of discharge.
Advantages of the present invention and good effect be:
(1) in safety and environmental friendliness, adopting methanol liquid pool fire as burning things which may cause a fire disaster, sufficient combustion is complete, and product cleans；Meanwhile, utilize the smoke modelling fire smoke that cake produces, environmental friendliness, pollution-free, to human body without pessimal stimulation；
(2) in simulation of smoke movement experiment effect, laboratory table is according to the Froude theory of similarity, intactly flow of flue gas state in the building element such as skyscraper stairwell, vertical shaft, cup, room, corridor under simulation external wind effect, and can by experiment on front side of platform safety glass observation window clearly monitor fire and fire and smoke spread phenomenon in experimentation；
(3) simulating in effect in external wind, removable air curtain system position, height and wind speed can freely regulate, and air channel is internal places the extraneous wind speed that the PVC plastic pipe that diameter is 1cm can provide stable；
(4) in experimental implementation, stairwell, vertical shaft, cup, room, corridor side wall have closable opening, can be used for experimenter and arrange measurement apparatus and cleaning experiment platform；Stairwell and vertical shaft can be connected in free combination by components such as square flange and cup, room, corridors, meet different experiments demand, easy to use；
(5) in experimental measurement system, advanced complete temperature, speed, pressure and radiant heat flow measuring system, fume component analysis system, flow field survey system, flow of flue gas parameter and cigarette control effect can be carried out omnibearing observation and research by observation system etc.；
(6) in experimental cost, this small-scale experiment platform is compared large-sized laboratory table and is expended few, repeatable strong, easy to operate, simultaneously accuracy height compared with computer simulation method.
Accompanying drawing explanation
Fig. 1 is vertical shaft overall structure schematic diagram of the present invention；
Fig. 2 is stairwell overall structure schematic diagram of the present invention；
Fig. 3 is cup of the present invention and room overall structure schematic diagram；
Fig. 4 is corridor of the present invention overall structure schematic diagram；
Fig. 5 is window on the left of stairwell and vertical shaft, anemobiagraph probe and fume component analysis instrument probe position view (left view)；
Fig. 6 is the thermocouple in the middle of stairwell and vertical shaft and pressure probe position view (front view)；
Fig. 7 is radiation heatflowmeter position view (right view) on the right side of stairwell and vertical shaft；
Fig. 8 is cup and room thermocouple location schematic diagram (front view)；
Fig. 9 is corridor thermocouple location schematic diagram (front view)；
Figure 10 is removable air curtain system overall structure schematic diagram of the present invention.
Number in the figure: window on the left of 1-vertical shaft；2-vertical shaft left side wall (PLASTIC LAMINATED and steel plate)；3-vertical shaft laser light sheet；4-vertical shaft rear wall (PLASTIC LAMINATED and steel plate)；5-vertical shaft right side wall (PLASTIC LAMINATED and steel plate)；6-vertical shaft front side wall (safety glass)；Square flange on the right side of 7-vertical shaft；8-shaft bracket；Window on the left of 9-stairwell；10-stairwell left side wall (PLASTIC LAMINATED and steel plate)；11-stairwell laser light sheet；12-stair rear wall (PLASTIC LAMINATED and steel plate)；13-stair right side wall (PLASTIC LAMINATED and steel plate)；14-stairwell front side wall (safety glass)；Every layer of landing of 15-stairwell；16-stairwell every layer tilts staristep；Square flange on the right side of 17-stair；18-stairwell support；Square flange on the left of 19-cup；20-cup front side wall (safety glass)；21-cup left side wall (PLASTIC LAMINATED and steel plate)；22-cup rear wall (PLASTIC LAMINATED and steel plate)；The door opening in 23-UNICOM cup and room；24-room rear wall (PLASTIC LAMINATED and steel plate)；25-room right side wall (PLASTIC LAMINATED and steel plate)；The door opening being connected with outdoor on the right side of 26-room；27-room front side wall (safety glass)；28-cup and room support；29-cup and front, room video camera；Square flange on the left of 30-corridor；31-corridor front side wall (safety glass)；32-corridor left side wall (PLASTIC LAMINATED and steel plate)；33-corridor rear wall (PLASTIC LAMINATED and steel plate)；34-corridor right side wall (PLASTIC LAMINATED and steel plate)；The door opening being connected with outdoor on the right side of 35-corridor；36-corridor support；Front, 37-corridor video camera；38-vertical shaft and stairwell fume component analysis instrument probe；39-left side wall window front view；40-vertical shaft and stairwell high temperature hot-wire anemometer probe；41-vertical shaft and stairwell armoured thermocouple；42-vertical shaft and stairwell pressure probe；43-vertical shaft and stairwell radiation heatflowmeter；Square flange on the right side of 44-；45-cup and room armoured thermocouple；46-cup front view；47-room front view；48-corridor armoured thermocouple；49-corridor front view；50-removable air curtain system bottom wheel；51-air channel inner blower；52-cuboid air channel；53-may move air curtain system integral support；54-electric block steel wire rope；55-electric block pulley；56-diameter is 1cmPVC plastic tube.
Detailed description of the invention
The present invention is further illustrated below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1, vertical shaft height overall is 3.5m, wherein the high 0.5m of shaft bracket 8, adopts angle steel to build；Sectional shaft face is of a size of 0.75m × 0.5m.Having six windows being of a size of 0.4m × 0.3m 1 in the middle of vertical shaft left side wall 2, window 1 adopts and is opened flat mode, it is possible to freely open and close, interior safety glass thick for edge 5mm.Left side wall 2 outer surface is steel plate thick for 5mm, and liner is the PLASTIC LAMINATED that 8mm is thick.Vertical shaft rear wall 4, vertical shaft right side wall 5 are the same with the structure of vertical shaft left side wall 2.Vertical shaft front side wall 6 is the safety glass that 8mm is thick, and surrounding adopts elevated-temperature seal to process, and laser light sheet 3 is fixed on vertical shaft top, is used for observing flow of flue gas state in vertical shaft.Vertical shaft low side square flange 7 is of a size of 0.35m × 0.3m, it is possible to be connected with square flange 30 on the left of square flange on the left of cup 19 and corridor.
Referring to Fig. 2, stairwell height overall is 3.5m, wherein the high 0.5m of stairwell support 18, adopts angle steel to build；Stairwell cross sectional dimensions is 0.75m × 0.5m.Having six windows being of a size of 0.4m × 0.3m 9 in the middle of stairwell left side wall 10, window 9 adopts and is opened flat mode, it is possible to freely open and close, interior safety glass thick for edge 5mm.Left side wall 10 outer surface is steel plate thick for 5mm, and liner is the PLASTIC LAMINATED that 8mm is thick.Stairwell rear wall 12, stairwell right side wall 13 are the same with the structure of stairwell left side wall 10.Stairwell front side wall 14 is the safety glass that 8mm is thick, and surrounding adopts elevated-temperature seal to process, and laser light sheet 11 is fixed on stairwell top, is used for observing flow of flue gas state in stairwell.Every layer of stair all install two landings 15 and two inclination staristeps 16, and material is all made up of steel plate and PLASTIC LAMINATED.Landing 15 is of a size of 0.15m × 0.5m, tilts staristep 16 and is of a size of 0.23m × 0.51m, and angle of inclination is 50 °.Stairwell low side square flange 7 is of a size of 0.35m × 0.3m, it is possible to be connected with square flange 30 on the left of square flange on the left of cup 19 and corridor.
It is 0.5m × 0.5m × 0.5m referring to Fig. 3, cup and room length, width and height.On the left of cup 21, on rear side of cup 22, on rear side of room 24, on the right side of room 25, top, cup room and bottom be by the thick PLASTIC LAMINATED composition of steel plate thick for 5mm and 8mm, on front side of cup 20 and room on front side of 27 be thick for 8mm safety glass, surrounding adopts elevated-temperature seal to process, and is used for observing flow of flue gas state in cup and room.On the left of cup, flange 19 can be connected with vertical shaft flange 7 and stairwell flange 17；Cup and room connect by being of a size of 0.35m × 0.3m door opening 23.It is connected with outdoor by 0.35m × 0.3m door opening 26 on the right side of room.Cup and the high 0.5m of room support 28, adopt angle steel to build.Video camera 29 is placed on before cup and room, records flame forms and flow of flue gas state.
Referring to Fig. 4, corridor length, width and height are 2m × 0.5m × 0.5m.On the left of corridor 21, on rear side of corridor 22, on the right side of corridor 25, top, corridor and bottom be by the thick PLASTIC LAMINATED composition of steel plate thick for 5mm and 8mm；On front side of corridor, 31 is the safety glass that 8mm is thick, and surrounding adopts elevated-temperature seal to process, and is used for observing flow of flue gas state in corridor.On the left of corridor, flange 30 can be connected with vertical shaft flange 7 and stairwell flange 17；It is connected with outdoor by 0.35m × 0.3m door opening 35 on the right side of corridor.The high 0.5m of corridor support 36, adopts angle steel to build.Video camera 37 is placed on before corridor, records flame forms and flow of flue gas state.
Referring to Fig. 5, installing a window 39 on the left of vertical shaft and stairwell in the middle of wall every layer, window 39 is of a size of 0.4m × 0.3m, fume component analysis instrument probe 38 and anemobiagraph probe 40 and is arranged in the middle of the wall of left side, every layer of each layout one, for measuring wind speed and the smoke components at window 39 place.Fume component analysis instrument probe 38 and anemobiagraph 40 horizontal interval distances of popping one's head in are 0.02m, and vertical spacing distance is 0.5m.
Referring to Fig. 6, vertical shaft and stairwell intermediate arrangement a string armoured thermocouple 41(29) and a string pressure probe 42(29), it is used for measuring the Temperature Distribution within vertical shaft and stairwell and pressure distribution.Armoured thermocouple 41 and pressure probe 42 horizontal interval distance are 0.02m, and vertical spacing distance is 0.1m.
Referring to Fig. 7, vertical shaft and arrange a string radiation heatflowmeter 43 on the right side of stairwell on wall, totally 11, for measuring vertical shaft and the radiant heat flux of the internal heat smoke of stairwell, the vertical spacing distance of radiation heatflowmeter 43 is 0.25m.On the right side of vertical shaft and stairwell, wall upper flange 44 is of a size of 0.35m × 0.3m, is connected with square flange 30 on the left of square flange on the left of cup 19 and corridor.
Arrange a thermocouple arrays 45 referring to Fig. 8, cup 46 and room 47, totally 60 thermocouples 45, be used for flame and the flue-gas temperature distribution of measuring in cup and room.
Referring to Fig. 9, a thermocouple arrays 48 is arranged in corridor 49, totally 105 thermocouples 48, is used for flame and the flue-gas temperature distribution of measuring in corridor.
Referring to Figure 10, moving air curtain system includes air curtain support 53, support bottom wheel 50, blower fan 51, air channel 52, electric block steel wire rope 54, electric block pulley 55 etc., air curtain support 53 height is 3.8m, employing angle steel is built, support horizontal and vertical distance respectively 1m and 2m, support 53 wheel 50 arranged below, for horizontal direction moving air curtain system.Air channel 52 length, width and height are 1.5m × 0.8m × 0.8m, adopt steel plate to build, and welded seal forms, and wherein blower fan 51 is fixed on air channel 52 left end, and blower fan 51 frequency can regulate, it is provided that different wind speed, wind speed range is 0-8m/s；It is 1cmPVC plastic tube 56 that air channel 52 left end places many diameters, it is ensured that can provide stable extraneous wind speed.Air channel 52 can vertical adjustment height by calabash steel wire rope 54 and electric block pulley 55.
What the present invention did not elaborate partly belongs to techniques well known.
Although above the illustrative detailed description of the invention of the present invention being described; so that those skilled in the art understand the present invention; it is to be understood that; the invention is not restricted to the scope of detailed description of the invention; to those skilled in the art; as long as various changes limit and in the spirit and scope of the present invention determined, these changes are apparent from, and all utilize the innovation and creation of present inventive concept all at the row of protection in appended claim.
Claims (10)
1. skyscraper stairwell or vertical shaft fire test analog under an external wind effect, it is characterised in that include laboratory table main body, removable air curtain system and supporting TT&C system；
Described laboratory table main body, it is the BUILDINGS MODELS proportional with actual skyscraper actual size, including stairwell, vertical shaft, cup, room, corridor building element, overall employing steel plate is built, and welded seal forms, its external door and window adopt the mode that is opened flat, and do elevated-temperature seal process, so as to reach sealing effectiveness when closing；Laboratory table main body rack adopts angle steel to build；The front side of laboratory table main body all adopts safety glass exterior wall, and described safety glass is convenient observes building interior experimentation and phenomenon, also does elevated-temperature seal and process between this safety glass and described angle steel；In other sides of laboratory table main body and stairwell, stair step forms by fire resistant plate and steel plate；Stairwell, vertical shaft, cup, room, corridor building element all have opening, by square flange UNICOM；
Described removable air curtain system, including air curtain support, bracket bottom head sheave, blower fan, air channel, electric block steel wire rope, electric block pulley；Described air curtain support adopts angle steel to build, described bracket bottom head sheave, and for horizontal direction moving air curtain system, described air channel adopts steel plate to build, and welded seal forms；Described electric block steel wire rope and electric block pulley are used for regulating blower fan and air channel height；
Described supporting TT&C system, measures system, gas radiation heat-flow measurement system including flame and smoke temperature measurement system, wind velocity measurement system, pressure-measuring system, fume component analysis system, flue gas flow field；Described flame and smoke temperature measurement system include a string vertical thermocouple and cup, room and corridor internal thermocouples array in the middle of stairwell and vertical shaft；Described wind velocity measurement system includes being arranged in window place on the left of stairwell and vertical shaft and cup, room, the high temperature wind speed probe array at doorway, corridor place and the data processing equipment being connected with the high temperature wind speed probe array signal of telecommunication；Described pressure-measuring system includes the pressure probe being arranged within stairwell and vertical shaft and the data processing equipment being connected with the pressure probe signal of telecommunication；Described fume component analysis system includes the smoke components measuring probe being arranged within stairwell and vertical shaft and the data processing equipment being connected with the smoke components measuring probe signal of telecommunication；Described flue gas flow field measures the laser light sheet that system includes being arranged in stairwell and silo bottom and laboratory table main body right openings, in laboratory table main body front, video camera is set, with the flow of flue gas situation on observation experiment platform main body internal sheet bright finish, the radiant heat flux that described gas radiation heat-flow measurement system includes being arranged on stairwell and vertical shaft wall takes into account the data processing equipment being connected with the radiation heatflowmeter signal of telecommunication.
2. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, described stairwell and vertical shaft are connected in free combination by square flange and cup, room, corridor component, meet different experiments demand.
3. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, described laboratory table main body is built in the ratio of the 1:6 of actual building, it is divided into 6 layers, having, on described stairwell, vertical shaft, cup, room, corridor side wall, the opening that can freely close, this opening can also be used for experimenter and arranges measurement apparatus and cleaning experiment platform main body.
4. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, described stairwell, vertical shaft, cup, room, corridor wall are all formed by by fire resistant plate and steel plate, building wall heat transfer situation with reality similar, experimental result is more accurate.
5. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, described removable air curtain system not only position can move freely, and blower fan and air channel height can freely regulate, the pillar of support plays fixing and supporting role, pillar has U-shaped sulculus, air channel is contacted by pulley with U-shaped sulculus, reduce the frictional force that blower fan is upper and lower, increase the stability of blower fan motion, U-shaped sulculus there is aperture, after blower fan is risen to the height of needs, inside the aperture that safety rod is inserted under air curtain on U-shaped sulculus, in case wire cable rupture, increase safety, air curtain height adjustable scope 0-3.8m.
6. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterised in that the wind speed size of described removable air curtain system regulates by changing blower fan frequency, wind speed range 0-8m/s.
7. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, described removable air curtain system air channel is internal places the PVC plastic pipe that diameter is 1cm, the long 70cm of plastic conduit, plastic conduit is evenly arranged in inside air channel, constitute rectification section, make air flow out from rectification section uniformly, thus ensureing to provide stable extraneous wind speed.
8. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterised in that burning things which may cause a fire disaster is positioned at the bottom surface in stairwell, vertical shaft, cup, room and corridor.
9. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterised in that burning things which may cause a fire disaster adopts normal heptane, methanol, grillage, the liquefaction fire actual combustible of multiple standards fuel simulation.
10. skyscraper stairwell or vertical shaft fire test analog under a kind of external wind effect according to claim 1, it is characterized in that, burning things which may cause a fire disaster adopts methanol fire, utilize the smoke particle simulation by tracing fire smoke that cake produces, cake keeps certain distance with methanol food tray, during experiment, first light cake, then methanol is lighted, air is entrainmented during methanol burning, the buoyancy produced is ordered about the flue gas of cake generation and is flowed in laboratory table main body, can comparatively clearly the simulated fire flue gas situation that spreads in skyscraper and the process discharged from stairwell and vertical shaft.
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