CN103542996B - A kind of six flank fire vortex experimental facilities - Google Patents
A kind of six flank fire vortex experimental facilities Download PDFInfo
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- CN103542996B CN103542996B CN201210241136.2A CN201210241136A CN103542996B CN 103542996 B CN103542996 B CN 103542996B CN 201210241136 A CN201210241136 A CN 201210241136A CN 103542996 B CN103542996 B CN 103542996B
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- cylinder framework
- fire
- tempered glass
- collecting hood
- fume collecting
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Abstract
The invention discloses a kind of six flank fire vortex experimental facilities, comprise orthohexagonal cylinder framework, be placed in the horizontal slip groove on CylGizmo top of the trellis and bottom outside limit, removable door made of tempered glass, exhaust fume collecting hood and fuel tank, removable door made of tempered glass and the supporting setting of orthohexagonal cylinder framework are also placed in horizontal slip groove, exhaust fume collecting hood is arranged at directly over cylinder framework, and fuel tank is built in place of cylinder framework bottom centre.This experimental provision simulates the situation of air intake change in the scene of a fire by the opening pattern and width adjusting removable door made of tempered glass, compare the diversity adding experiment and the scope expanding research with six traditional flank fire cyclone generators, fire whirl formation condition and rule under different air inlet pattern and width can be studied.
Description
Technical field
The invention belongs to technical field of fire hazard safety, particularly a kind of can at a kind of experimental provision of different air intake pattern and width Imitating fire whirl.
Background technology
When the plan of Forset and glassland fire, Medium and low intensity is burned and some urban architecture fire occur; usually there will be a kind of strong convection fire phenomena showing as swirl flame; when the intensity of swirl flame is enough large; the mode of motion meeting flip-flop of its flame, forms the fire whirl with strong rotating forward movement.Air inlet width different in the scene of a fire and pattern can form dissimilar air flow field, this can cause nature to entrainment air velocity change, successively inwardly velocity of propagation is different for rotational flow field, the complexity forming fire whirl is different, fire whirl combustion intensity, temperature of combustion, rotational speed and flame height are different, and the HRR of fire is also not quite similar.The fire whirl duration and degree of heating simultaneously formed and direction of heat flow can be undergone mutation, be difficult to prediction, the safety of these personnel that serious threat is puted out a fire to save life and property, and fire whirl carries a large amount of burning bits blocks and spreads to place farther beyond flame range, form new burning things which may cause a fire disaster, this will make scene of a fire situation out of hand, cause more casualties and property loss.From six the seventies, people just have research to fire whirl, in fire whirl inducement mechanism, the aspect such as experimental simulation and numerical simulation achieves certain achievement, wherein the research and development of experimental simulation device focus on and how to form Shearing Flow, and improve the aspects such as Shearing Flow stability, such as, Zhang Linhe (in vertical-shaped conduit model, study by the generation of fire whirl and rotation regulation, Fire Science) etc. devise a hexagonal fire whirl generating means, this device is an enclosing wall type hexagonal prism, the identical gap of 6 width is had at six edge Central Symmetries, and be provided with fair water fin.This generating means opening pattern is certain, and the experimental study of fire whirl under a kind of A/F can only be provided, assay format is single, and range of application is little.The domestic and international mechanism formed for fire whirl under air intake pattern different in the scene of a fire and width at present, architectural feature changes, and the research of characteristic parameter change is very few, does not find the report about the proprietary experimental provision of this respect in existing technical information.
Summary of the invention
The object of the present invention is to provide a kind of can at the experimental provision of different air intake pattern and width Imitating fire whirl.
Realize the technical solution of the object of the invention: a kind of six flank fire vortex experimental facilities, comprise orthohexagonal cylinder framework, be placed in the horizontal slip groove on CylGizmo top of the trellis and bottom outside limit, removable door made of tempered glass, exhaust fume collecting hood and fuel tank, removable door made of tempered glass and the supporting setting of orthohexagonal cylinder framework are also placed in horizontal slip groove, exhaust fume collecting hood is arranged at directly over cylinder framework, and fuel tank is built in place of cylinder framework bottom centre.
The present invention has the following advantages: the removable door made of tempered glass of six fans is all fixed in the top of cylinder framework and the horizontal concrete chute on bottom outside limit, freely can adjust opening pattern and regulate A/F, and different opening patterns and A/F also can independent assortments, research fire whirl Forming Mechanism under numerous conditions and rule, add experiment diversity, expand research range.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of six flank fire vortex experimental facility embodiments of the present invention.
Fig. 2 is the structural representation of removable door made of tempered glass lower limb pulley of the present invention and place chute.
Fig. 3 is the vertical view of experimental provision described in the embodiment of the present invention.
Embodiment
See Fig. 1, the housing of device described in the present embodiment is orthohexagonal cylinder framework 1, this cylinder framework 1 is welded than the rectangle frame being 3:1 by six length and width sizes, each rectangle frame is made up of stainless-steel tube (in this example, stainless-steel tube cross section is the wide square structure of 2.5cm), cylinder framework 1 fixes on the ground, is the agent structure of fire vortex experimental facility; In order to fixing and mobile removable door made of tempered glass 2, the regular hexagon outer side edges of the top of cylinder framework 1 and bottom is provided with horizontal slip groove 4; The conveniently observation of experimental phenomena, removable door made of tempered glass 2 is made up of tempered glass, and removable door made of tempered glass 2 is supporting with cylinder framework 1 size; In order to safety installs pulley with being convenient to, at removable door made of tempered glass 2 surrounding parcel corrosion resistant plate; Each removable door made of tempered glass 2 side centre-height place is provided with handle, and its base and top margin install several steel pulleys 3, and removable door made of tempered glass 2 is arranged in the horizontal concrete chute 4 of cylinder framework 1, facilitates the movement of removable door made of tempered glass; For the ease of testing the quantitative adjusting of A/F, horizontal concrete chute 4 is provided with scale, see Fig. 2.Exhaust fume collecting hood 6 is provided with above cylinder framework 1, because flue gas speed that fuel combustion is incompletely formed is greater than the exhaust rate of axial-flow type smoke exhaust fan 8 in fire whirl generating process, and cause flue gas in experimental provision to gather, affect the observation of experiment effect and experimental phenomena, the exhaust fume collecting hood 6 of this example is not connected with orthohexagonal cylinder framework 1, what the air port area of exhaust fume collecting hood 6 was greater than orthohexagonal cylinder framework 1 overlooks area, the preferred 30:17 of its ratio, opening is provided with at the top of exhaust fume collecting hood 6, be connected with smoke discharging pipe 7, through to outdoor, it is inner that axial-flow type smoke exhaust fan 8 is embedded in smoke discharging pipe 7.
As shown in Figure 3, when opening pattern is six symmetrical openings, regulate the A/F of removable door made of tempered glass 2, simulate formation condition and the rule of fire whirl under different air intake width.The uncovered fuel tank 5 holding fuel, its specification has 5cm
5cm
5cm, 10cm
10cm
5cm, 15cm
15cm
10cm, 20cm
20cm
5cm, 20cm
20cm
10cm, 30cm
30cm
10cm, is put in the place of bottom centre of cylinder framework 1, burns for simulated fire.
When experiment is carried out, flame can because of natural convection and heat buoyancy effect and the formation fire plume that moves upward, when air-flow enters along horizontal tangential inside removable door made of tempered glass 2, the moment produced can make air-flow rotate, due to heat buoyancy effect, low-density gas will inevitably focus on central area and move upward, thus strengthening fire plume, form fire whirl thus.When experiment starts, the switch of axial-flow type smoke exhaust fan 8 on unlocking wall, axial-flow type smoke exhaust fan 8 starts running, air-flow is upwards provided in a device, be convenient to the discharge of flue gas, too increase the ascending velocity of upwards air stream simultaneously, be beneficial to the formation of fire whirl, experiment terminates rear help and removes the remaining flue gas in laboratory.
The present invention not only can by regulating the opening pattern of removable door made of tempered glass 2, simulate at single radial cut, under the symmetrical form such as many openings and asymmetric many openings, different Shearing Flow is on the impact of the condition and regularity that fire whirl is formed, can also by carrying out the adjustment of A/F under certain opening pattern, study impact and rule that different air intake width formed fire whirl, add the diversity of experimental study, expand the scope of research, make the universality of device stronger.
Claims (6)
1. a flank fire vortex experimental facility, it is characterized in that comprising orthohexagonal cylinder framework (1), be placed in the horizontal slip groove (4) on cylinder framework (1) top and bottom outside limit, removable door made of tempered glass (2), exhaust fume collecting hood (6) and fuel tank (5), described removable door made of tempered glass (2) and the supporting setting of described cylinder framework (1) are also placed in described horizontal slip groove (4), described exhaust fume collecting hood (6) is arranged on directly over described cylinder framework (1), described fuel tank (5) is built in place of described cylinder framework (1) bottom centre.
2. six flank fire vortex experimental facilities according to claim 1, is characterized in that described cylinder framework (1) is welded than the rectangle frame being 3:1 by six length and width sizes.
3. six flank fire vortex experimental facilities according to claim 1, is characterized in that described removable door made of tempered glass (2) surrounding parcel corrosion resistant plate, its base and top margin are installed multiple steel pulley (3).
4. six flank fire vortex experimental facilities according to claim 1, is characterized in that being provided with scale on described horizontal slip groove (4).
5. six flank fire vortex experimental facilities according to claim 1, it is characterized in that described exhaust fume collecting hood (6) is not connected with orthohexagonal cylinder framework (1), what the air port area of described exhaust fume collecting hood (6) was greater than described cylinder framework (1) overlooks area, and its ratio is 30:17.
6. six flank fire vortex experimental facilities according to claim 1, it is characterized in that being provided with opening at the top of described exhaust fume collecting hood (6), be connected with smoke discharging pipe (7), through to outdoor, it is inner that axial-flow type smoke exhaust fan (8) is embedded in smoke discharging pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241136.2A CN103542996B (en) | 2012-07-12 | 2012-07-12 | A kind of six flank fire vortex experimental facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241136.2A CN103542996B (en) | 2012-07-12 | 2012-07-12 | A kind of six flank fire vortex experimental facilities |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542996A CN103542996A (en) | 2014-01-29 |
| CN103542996B true CN103542996B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210241136.2A Expired - Fee Related CN103542996B (en) | 2012-07-12 | 2012-07-12 | A kind of six flank fire vortex experimental facilities |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017848B (en) * | 2016-05-27 | 2019-01-22 | 中国科学技术大学 | A kind of fire whirl analogue measurement system |
| CN109959753A (en) * | 2019-03-26 | 2019-07-02 | 上海海事大学 | A kind of corrosion chamber for accelerating processing oil spilling |
| CN110491238A (en) * | 2019-09-26 | 2019-11-22 | 南京工业大学 | A kind of controllable fire whirl experiment simulation demonstrating apparatus of multi-drive type |
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| CN2462382Y (en) * | 2001-01-08 | 2001-11-28 | 中国科学技术大学 | Heat radiating fire disaster characteristic test-bed |
| CN2477991Y (en) * | 2001-04-23 | 2002-02-20 | 陈云胜 | I.C. cyclone kiten range cover |
| CN1556510A (en) * | 2004-01-09 | 2004-12-22 | 清华大学 | Fire disaster smoke imitation generating device |
| CN101145296A (en) * | 2006-11-24 | 2008-03-19 | 中国科学技术大学 | Fire vortex experimental facility |
| GB2460851A (en) * | 2008-06-12 | 2009-12-16 | Kevin Coates | Portable triangular temporary housing module |
-
2012
- 2012-07-12 CN CN201210241136.2A patent/CN103542996B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462382Y (en) * | 2001-01-08 | 2001-11-28 | 中国科学技术大学 | Heat radiating fire disaster characteristic test-bed |
| CN2477991Y (en) * | 2001-04-23 | 2002-02-20 | 陈云胜 | I.C. cyclone kiten range cover |
| CN1556510A (en) * | 2004-01-09 | 2004-12-22 | 清华大学 | Fire disaster smoke imitation generating device |
| CN101145296A (en) * | 2006-11-24 | 2008-03-19 | 中国科学技术大学 | Fire vortex experimental facility |
| GB2460851A (en) * | 2008-06-12 | 2009-12-16 | Kevin Coates | Portable triangular temporary housing module |
Non-Patent Citations (2)
| Title |
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| 不同来流下火旋风的实验研究;张孝华等;《火灾科学》;20070831;第16卷(第3期);第143-147页 * |
| 竖形槽道模型中火旋风的发生与旋转规律研究;张林鹤等;《火灾科学》;20061031;第15卷(第4期);第201页第1节 * |
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Granted publication date: 20160420 Termination date: 20180712 |