CN104849398B - Experimental device for studying fire spread of thermal insulating material under ambient wind condition - Google Patents
Experimental device for studying fire spread of thermal insulating material under ambient wind condition Download PDFInfo
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Abstract
The invention relates to an experimental device for studying fire spread of a thermal insulating material under an ambient wind condition. Compared with the prior art, the experimental device solves the defect that no experimental device for studying fire spread of thermal insulating materials under the ambient wind condition is available. A vertical movement component is mounted on a sample bracket of the experimental device, a support platform is mounted on the vertical movement component, two rotating shaft support bases are arranged on the support platform, sample rotating shafts are mounted on the rotating shaft support bases and are in rotational matching with the rotating shaft support bases, ceramic fiber plates are fixedly mounted on the sample rotating shafts, a turbine worm speed reducer A is fixedly mounted on the support platform, the output shaft of the turbine worm speed reducer A is horizontally connected with a sample rotating shaft, and a rotating handle A is mounted on the input shaft of the turbine worm speed reducer A. By adopting the experimental device, fire spread of the thermal insulating material can be studied under the multi-angle ambient wind condition, and moreover, the wind speed, the wind direction and the placing angle of a sample material can be controlled.
Description
Technical field
The present invention relates to construction material fire protecting performance studying technological domain, specifically a kind of to be used for research environment wind bar
The experimental provision of insulation material fire spread under part.
Background technology
As the increasingly quickening developed rapidly with ur- banization speed of China's economy, China's building trade development are swift and violent, ring
The building energy conservation requirement that China increasingly increases, organic external-wall heat-insulation material is answered to be widely used in external wall, its economic benefit
Consistent accreditation has been obtained with heat-insulating property.However, because organic insulation material self structure determines that its fire protecting performance is poor, pole
Easy firing, once and catch fire can produce amount of heat promote to be produced in the fire spreads quickly, and combustion process it is a large amount of it is poisonous,
Harmful smoke.Assessment due to lacking corresponding fire precautions legislation and related fire risk, a large amount of flammable, inflammable organic exterior walls are protected
Adiabator is used for large public building and skyscraper, causes fire incident in recent years to happen occasionally.Building is exposed to outer
In boundary's environment, occur to be affected larger by ambient wind during fire, the combustible existed in the scene of a fire of ambient wind is provided in a large number
Oxygen, often leads to the intensity of a fire and increases rapidly, and flame spread rates are accelerated so that the probability of personnel escape is greatly reduced, serious prestige
Coerce the safety of life and property of people.Insulation material and its fire spread row in combustion under the conditions of research environment wind
It is with very strong realistic meaning.
The complexity of combustion characteristics and fire scenario for external-wall heat-insulation material, for research external thermal insulation system
Fire risk is difficult to consider real environmental condition, some research worker is had both at home and abroad and is testing indoor development different condition
The experimentation of lower fire spread.Number of patent application 200820215325.1 (Authorization Notice No. CN 201307109Y) refer to temperature
Fire spread research under the different conditions such as humidity, oxygen concentration, radiant intensity, number of patent application 201320457285.2 (authorizes public
Announcement CN203455252 U) it is related to insulation material fire spread experimental provision under radiation condition.But, at present with regard to ambient wind bar
Fire spread research is considerably less under part, and there is no the experimental provision with regard to ambient wind condition fire spread research, how to develop one kind
The skill for being badly in need of solving can be had become with the experimental provision of different operating mode insulation material fire spread behaviors under the conditions of research environment wind
Art problem.
The content of the invention
The invention aims to solve to there is no experimental provision to be incubated under the conditions of research environment wind in prior art
The defect of material fire spread, there is provided the experimental provision of insulation material fire spread is solving under the conditions of a kind of wind for research environment
State problem.
To achieve these goals, technical scheme is as follows：
The experimental provision of insulation material fire spread under the conditions of a kind of wind for research environment, including main body rack and sample
Frame, main body rack is corresponding in mirror image with both sample holders, and ambient wind tilt component, environment are provided with described main body rack
Ambient wind is installed on wind tilt component and generates pipe, ambient wind generates the one end in pipe and is provided with blower fan, and ambient wind is generated in pipe
The other end several rectification pipelines are installed, the airflow direction of blower fan is corresponding with rectification pipeline；
Vertical motion assemblies are installed on described sample holder, support platform is installed in vertical motion assemblies, support
Platform is provided with rotation shaft stool, and the quantity for rotating shaft stool is 2, sample rotary shaft be arranged on rotate on shaft stool and with turn
Moving axis bearing is constituted and is rotatably assorted, and ceramic beaverboard is fixedly mounted in sample rotary shaft, and whirlpool is installed with support platform
The output shaft of worm and gear reductor A, turbine worm reducer A connects with sample rotary shaft level, and turbine worm reducer A's is defeated
To enter be provided with axle handle A.
Described vertical motion assemblies include spiral lift, and sample holder is provided with rack platform, and spiral lift is solid
Dingan County is mounted on rack platform, and the screw mandrel of spiral lift is vertically mounted in support platform, is pacified on the worm screw of spiral lift
Equipped with swinging handle.
Described ambient wind tilt component includes the axis of rolling mounting seat being fixedly mounted on main body rack, and the axis of rolling is installed
The quantity of seat is 2, and the axis of rolling is arranged in axis of rolling mounting seat and constitutes with axis of rolling mounting seat and is rotatably assorted, on the axis of rolling
Be installed with support of pipelines, ambient wind generates pipe and is fixedly mounted on support of pipelines, the output shaft of turbine worm reducer B with
Axis of rolling level connects, and handle B is provided with the input shaft of turbine worm reducer B.
Also include the converter being fixedly mounted on turbine worm reducer B, the power line of blower fan is connected on converter.
Also include semicircle angle dial, semicircle angle dial is arranged on main body rack by fixed block, half fillet
Degree graduated disc is perpendicular with the axis of rolling, is provided with pointer on the axis of rolling, and pointer is vertical with semicircle angle dial corresponding and works as ring
Humorously when managing parallel to the ground, pointer points to 0 degree of semicircle angle dial in border.
Described main body rack bottom is provided with roller, and the quantity of roller is 4；Install the bottom of described sample holder
There is pulley, the quantity of pulley is 4.
Described ambient wind generates a diameter of 60cm of pipe, and it is 150cm that ambient wind generates the length of pipe, blower fan it is a diameter of
60cm, the length of blower fan is 50cm, and the length of rectification pipeline is 100cm.
Beneficial effect
The experimental provision of insulation material fire spread under the conditions of a kind of wind for research environment of the present invention, with prior art phase
Than the fire spread of insulation material can be studied under the conditions of multi-angle ambient wind, and it is capable of the side of the size of controlled wind speed, wind
To the angles of, specimen material, same wind direction, impact of the sample angles to material fire spread can be not only studied；May be used also
The fixed sample angles of research, impact of the wind direction to material fire spread；Also shadow of the wind speed to material fire spread behavior can be studied
Ring, be that the research of external wall outer insulation material fire spread behavior in actual environment provides the foundation experiment porch.
The design for generating pipe by ambient wind tilt component and ambient wind can simulate wind environment, and can be according to experiment need
To adjust speed, the angle of wind of conversion wind.The experimental provision being capable of sample combustion under synchro measure varying environment working condition
The change of its surface temperature during burning, and its fire spread behavior can be recorded from front, side whole process.The present invention can grind
Study carefully the fire spread behavior of the multi parameters controls such as wind speed, wind direction, sample angle, and then analyze shadow of the different factors to fire spread behavior
The mechanism of sound, the theoretical research for external-wall heat-insulation material fire spread under the conditions of actual environment wind provides basis.The present invention can also be used
In fire spread behavior of other solid combustibles of research under ambient wind effect.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structure front view that main body rack and ambient wind generate pipe in the present invention；
Fig. 3 is structure rearview when ceramic beaverboard is 90 degree in the present invention；
Fig. 4 is the structural representation of support of pipelines in the present invention；
Fig. 5 is thermocouple position schematic diagram in the present invention；
Fig. 6 is the motion principle figure of turbine worm reducer in the present invention；
Fig. 7 is the motion principle figure of spiral lift in the present invention；
Wherein, 1- main body racks, 2- sample holders, 3- turbine worm reducer B, 4- semicircle angle dials, 5- turbines
Worm decelerating machine A, 6- angular display unit, 7- pointers, the 8- axis of rolling, 9- blower fans, 10- supports of pipelines, 11- handle B, 12- frequency conversions
Device, 13- rectification pipelines, 14- ceramic beaverboards, 15- sample rotary shafts, 16- handle A, 17- spiral lifts, 18- shake handss
Handle, 19- thermocouples, 20- rollers, 21- pulleys, 31- ambient winds generate pipe, 32- support platforms, 33- and rotate shaft stool, 34-
Body panel, 35- axis of rolling mounting seats, 37- fixed blocks, 51- reductor worm gears, 52- reductor worm screws, 171- screw mandrels, 172- snails
Wheel, 173- worm screws.
Specific embodiment
Effect to make the architectural feature to the present invention and reached has a better understanding and awareness, to preferably
Embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in figure 1, the experiment of insulation material fire spread is filled under the conditions of a kind of wind for research environment of the present invention
Put, including main body rack 1 and sample holder 2, both are corresponding in mirror image for main body rack 1 and sample holder 2.For convenience of main body rack
1 and the movement of sample holder 2, the bottom of main body rack 1 can install 4 rollers 20；The bottom of same sample holder 2 can also
4 pulleys 21 are installed.Ambient wind tilt component is installed, ambient wind tilt component is used to realize ambient wind on main body rack 1
Wind direction is adjusted, and ambient wind is provided with ambient wind tilt component and generates pipe 31.One end that ambient wind is generated in pipe 31 is provided with wind
Machine 9, the diameter of blower fan 9 is identical with the diameter that ambient wind generates pipe 31.Air-flow manufactured by blower fan 9 is irregular, spiral type,
And the wind environment in daily life is uniform, regular, thus the wind direction and air-flow produced by blower fan 9 need it is whole through several
After the rectification of flow tube road 13, several regular flows are formed.The other end that ambient wind is generated in pipe 31 is provided with several rectifier tubes
Road 13, rectification pipeline 13 is identical with ambient wind generation pipe 31 direction, and multiple rectification pipelines 13 are mutually relied on and are covered with ambient wind generation
The other end of pipe 31.Wherein, ambient wind generate pipe 31 a diameter of 60cm, ambient wind generate pipe 31 length be 150cm, blower fan
9 a diameter of 60cm, the length of blower fan 9 is 50cm, and the length of rectification pipeline 13 is 100cm.I.e. whole ambient wind generates pipe 31
Inside generated occupied by pipe 31 by blower fan 9 and ambient wind, the airflow direction of blower fan 9 is corresponding with rectification pipeline 13, from blower fan 9
Produced air-flow blows out ambient wind and generates pipe 31 by rectification pipeline 13.
As shown in figures 1 and 3, vertical motion assemblies are installed on sample holder 2, support is installed in vertical motion assemblies
Platform 32, vertical motion assemblies are used to realize the raising and lowering of support platform 32.Support platform 32 is provided with rotation shaft stool
33, the quantity for rotating shaft stool 33 is 2, and rotating shaft stool 33 is used to fix sample rotary shaft 15, can design and support flat
The integral structure of platform 32.Sample rotary shaft 15 is arranged on and rotates on shaft stool 33 and be rotatably assorted with the composition of shaft stool 33 is rotated,
Sample rotary shaft 15 constitutes the mode being rotatably assorted with rotation shaft stool 33 and can use the various ways of prior art, such as sample
It is first-class that rotary shaft 15 is arranged on rotation shaft stool 33 by bearing.Ceramic beaverboard 14 is fixedly mounted in sample rotary shaft 15,
By the rotation of sample rotary shaft 15, the upset of ceramic beaverboard 14 can be driven.Turbine is installed with support platform 32
The output shaft of worm decelerating machine A5, turbine worm reducer A5 connects with the level of sample rotary shaft 15, turbine worm reducer A5
Input shaft on handle A16 is installed.As shown in fig. 6, by rotating handle A16, driving the deceleration of turbine worm reducer A5
Machine worm gear 51 is moved, and because both reductor worm gear 51 and reductor worm screw 52 are engagements, then drives 52 turns of reductor worm screw
It is dynamic, so as to drive the rotation of sample rotary shaft 15, realize the angle upset of ceramic beaverboard 14.
Sample holder 2 is provided with rack platform 34, and rack platform 34 is used to install vertical motion assemblies.Carrying out thermal insulating material
When material fire spread is studied, ambient wind generates the angle of inclination of pipe 31 and ceramic beaverboard 14 (installing the specimen holder of sample) needs phase
Mutually coordinate and adjust, can be only achieved experiment effect.Though the height that ambient wind generates pipe 31 will not change, blower fan 9 occurs
During rotation, there are the locus of wind can change a lot, in order that test sample (insulation material) is in all the time ambient wind
In, then need the height for adjusting the vertical direction of ceramic beaverboard 14.The spiral lift 17 of vertical motion assemblies is fixedly mounted on
On rack platform 34, as shown in fig. 7, the screw mandrel 171 of spiral lift 17 is vertically mounted in support platform 32, on screw mandrel 171
Lower motion drives the up and down motion of support platform 32.Swinging handle 18, spiral liter are installed on the worm screw 173 of spiral lift 17
The worm screw 173 of drop machine 17 is meshed with worm gear 172, drives worm screw 173 to rotate by swinging handle 18, and drive screw mandrel is about 171
Motion, realizes the rising of rack platform 34, declines, so as to realize the raising and lowering of ceramic beaverboard 14.
As depicted in figs. 1 and 2, ambient wind tilt component includes the axis of rolling mounting seat being fixedly mounted on main body rack 1
35, with rotation shaft stool 33 in the same manner, the quantity of axis of rolling mounting seat 35 is 2 to axis of rolling mounting seat 35, for installing the axis of rolling
8.The axis of rolling 8 be arranged on axis of rolling mounting seat 35 on and with axis of rolling mounting seat 35 constitute be rotatably assorted, the same axis of rolling 8 with rolling
Moving axis mounting seat 35 is rotatably assorted can use the various ways of prior art.Support of pipelines 10 is installed with the axis of rolling 8,
The structure of support of pipelines 10 is as shown in figure 4, for fixed environment humorously into pipe 31, ambient wind generates pipe 31 and is fixedly mounted on pipeline
On support 10.The output shaft of turbine worm reducer B3 connects with the level of the axis of rolling 8, on the input shaft of turbine worm reducer B3
Handle B11 is installed, in the same manner, by the rotation of handle B11, the rotary motion of the axis of rolling 8 is driven, inclining for support of pipelines 10 is driven
Tiltedly, realize that ambient wind generates the angle of pipe 31 and inclines.
In order to control the wind speed size of blower fan 9, can be with fixed installation converter 12, wind on turbine worm reducer B3
The power line of machine 9 is connected on converter 12, is controlled by changing the frequency of converter 12.Experiment for convenience needs, and works as ring
When border inclines humorously into pipe 31, its angle of inclination can be accurately grasped, semicircle angle dial 4 can also be included.Semicircle angle
Graduated disc 4 is the measurement apparatus with angle value scale, and semicircle angle dial 4 is arranged on main body rack 1 by fixed block 37
On.Semicircle angle dial 4 is perpendicular with the axis of rolling 8, and pointer 7, pointer 7 and semicircle angle dial 4 are provided with the axis of rolling 8
Vertical correspondence.When the ambient wind generation pipe 31 on the axis of rolling 8 is parallel to the ground, pointer 7 is located at the 0 of semicircle angle dial 4
Degree；When ambient wind generates 31 tilt adjustments of pipe, pointer 7 is adjusted in the lump with the axis of rolling 8, i.e., on semicircle angle dial 4
Show the corresponding number of degrees.In the same manner, it is also possible to the also setting angle display 6 in sample rotary shaft 15, sample rotary shaft is shown
15 number of rotation.
In actual use, as shown in figure 5, demarcating ambient wind first generates the distance between pipe 31 and sample surfaces, and
Using selected distance as the initial parameter tested, and determine the corresponding relation under the distance parameter between wind speed and frequency.It is real
Before testing beginning, insulation material is fixed on ceramic beaverboard 14, the arrangement insulation material sample surfaces of multiple thermocouples 9 need
The position of measurement surface temperature.Can be 24 in this thermocouple 9,6*4 matrixes are distributed as, per between-line spacing 5cm measuring samples table
Face temperature.According to experiment demand, blower fan angle, turbine worm reducer A5 adjustment samples are adjusted by turbine worm reducer B3
Angle, spiral lift 17 adjusts height of specimen.Two DV are placed on into camera site and in shooting state, linear ignition is used
Source is lighted by laboratory sample；Needed to adjust blower fan frequency according to research, blower fan 9 is opened simultaneously after specimen material burning is relatively stable
Start experiment measurement.
Ultimate principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
The simply present invention of the personnel it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and description
Principle, without departing from the spirit and scope of the present invention the present invention also have various changes and modifications, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (6)
1. under the conditions of a kind of wind for research environment insulation material fire spread experimental provision, including main body rack（1）And sample
Support（2）, main body rack（1）With sample holder（2）Both are in mirror image correspondence, it is characterised in that：Described main body rack（1）On
Ambient wind tilt component is installed, ambient wind is installed on ambient wind tilt component and is generated pipe（31）, ambient wind is generated manages（31）
Interior one end is provided with blower fan（9）, ambient wind is generated manages（31）The interior other end is provided with several rectification pipelines（13）, blower fan
（9）Airflow direction and rectification pipeline（13）It is corresponding；
Described sample holder（2）On vertical motion assemblies are installed, support platform is installed in vertical motion assemblies（32）,
Support platform（32）It is provided with rotation shaft stool（33）, rotate shaft stool（33）Quantity be 2, sample rotary shaft（15）It is arranged on
Rotate shaft stool（33）It is upper and with rotate shaft stool（33）Composition is rotatably assorted, ceramic beaverboard（14）It is fixedly mounted on sample to turn
Moving axis（15）On, support platform（32）On be installed with turbine worm reducer A（5）, turbine worm reducer A（5）It is defeated
Shaft and sample rotary shaft（15）Level connects, turbine worm reducer A（5）Input shaft on handle A is installed（16）；
Described ambient wind tilt component includes being fixedly mounted on main body rack（1）On axis of rolling mounting seat（35）, the axis of rolling
Mounting seat（35）Quantity be 2, the axis of rolling（8）Installed in axis of rolling mounting seat（35）It is upper and with axis of rolling mounting seat（35）Structure
Into being rotatably assorted, the axis of rolling（8）On be installed with support of pipelines（10）, ambient wind is generated manages（31）It is fixedly mounted on pipeline
Frame（10）On, turbine worm reducer B（3）Output shaft and the axis of rolling（8）Level connects, turbine worm reducer B（3）It is defeated
To enter be provided with axle handle B（11）.
2. under the conditions of a kind of wind for research environment according to claim 1 insulation material fire spread experimental provision, its
It is characterised by：Described vertical motion assemblies include spiral lift（17）, sample holder（2）It is provided with rack platform（34）,
Spiral lift（17）It is fixedly mounted on rack platform（34）On, spiral lift（17）Screw mandrel（171）It is vertically mounted on and props up
Support platform（32）On, spiral lift（17）Worm screw（173）On swinging handle is installed（18）.
3. under the conditions of a kind of wind for research environment according to claim 1 insulation material fire spread experimental provision, its
It is characterised by：Also include being fixedly mounted on turbine worm reducer B（3）On converter（12）, blower fan（9）Power line be connected on
Converter（12）On.
4. under the conditions of a kind of wind for research environment according to claim 1 insulation material fire spread experimental provision, its
It is characterised by：Also include semicircle angle dial（4）, semicircle angle dial（4）By fixed block（37）Installed in main body
Frame（1）On, semicircle angle dial（4）With the axis of rolling（8）It is perpendicular, the axis of rolling（8）On pointer is installed（7）, pointer（7）With
Semicircle angle dial（4）It is vertical to correspond to and manage when ambient wind is generated（31）When parallel to the ground, pointer（7）Point to semicircle angle
Graduated disc（4）0 degree.
5. under the conditions of a kind of wind for research environment according to claim 1 insulation material fire spread experimental provision, its
It is characterised by：Described main body rack（1）Bottom is provided with roller（20）, roller（20）Quantity be 4；Described sample
Frame（2）Bottom pulley is installed（21）, pulley（21）Quantity be 4.
6. under the conditions of a kind of wind for research environment according to claim 1 insulation material fire spread experimental provision, its
It is characterised by：Described ambient wind generates pipe（31）A diameter of 60cm, ambient wind generate pipe（31）Length be 150cm, wind
Machine（9）A diameter of 60cm, blower fan（9）Length be 50cm, rectification pipeline（13）Length be 100cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510282066.9A CN104849398B (en) | 2015-05-28 | 2015-05-28 | Experimental device for studying fire spread of thermal insulating material under ambient wind condition |
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| CN201510282066.9A CN104849398B (en) | 2015-05-28 | 2015-05-28 | Experimental device for studying fire spread of thermal insulating material under ambient wind condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106228890B (en) * | 2016-09-30 | 2022-09-06 | 中国科学技术大学 | Three-dimensional fire behavior simulation experiment device of high-rise building under effect of environmental wind |
| CN109100464B (en) * | 2018-07-18 | 2021-05-11 | 华侨大学 | Building wall insulation board fire burning characteristic testing device with adjustable complex configuration |
| CN109003499A (en) * | 2018-07-19 | 2018-12-14 | 佛山市三水区希望火炬教育科技有限公司 | A kind of dedicated extra large reef bunker submarine mine delivery system of teenager's defence education |
| CN114441705B (en) * | 2022-01-22 | 2024-03-22 | 中国矿业大学 | Multi-parameter continuously adjustable cable fire spreading experimental device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201307109Y (en) * | 2008-11-21 | 2009-09-09 | 中国科学技术大学 | Multi-parameter coupling fire spread tester |
| CN101718676B (en) * | 2009-11-24 | 2011-08-17 | 中国兵器工业第五九研究所 | Atmospheric environment comprehensive natural acceleration test system |
| CN202195927U (en) * | 2011-05-13 | 2012-04-18 | 常州天华新能源科技有限公司 | Fireproof performance test apparatus |
| CN102879305B (en) * | 2012-09-26 | 2014-12-17 | 公安部天津消防研究所 | Liquefied natural gas (LNG) drain diffusion and pool fire combustion simulated experimental platform and LNG drain diffusion and pool fire combustion simulated experimental method |
| CN203455252U (en) * | 2013-07-30 | 2014-02-26 | 中国科学技术大学 | Thermal insulating material fire spreading characteristic experiment device under external adjustable constant radiation condition |
| CN204719017U (en) * | 2015-05-28 | 2015-10-21 | 中国科学技术大学 | A kind of experimental provision for insulation material fire spread under research environment wind condition |
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