CN103389254B - Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition - Google Patents
Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition Download PDFInfo
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Abstract
The invention provides an experiment device for fire spread characteristics of a thermal insulation material under an external adjustable constant radiation condition. The experiment device comprises the thermal insulation material which is vertically fixed on the wall surface of a fire-resistant plasterboard by an iron buckle from the bottom or the top of the thermal insulation material; ignition grooves are fixedly formed in the position away from the upper edge or the lower edge of the thermal insulation material by a certain distance, used in two ignition modes including an upper ignition mode and a lower ignition mode, and used for igniting the thermal insulation material; a collecting groove is formed in the lower edge of the thermal insulation material and is used for observing the spread characteristics of melted dropping flowing objects of the thermal insulation material. According to the experiment device, the external radiation strength is controllable and stable, so that the fire spread characteristics of the thermal insulation materials with different panels and shapes under different radiation strengths can be researched. The thermal insulation material is fixed by fixing the bottom or the top of the thermal insulation material through the iron buckle and rivets, and other parts of the thermal insulation material does not need to fixed by the rivets, so that the interference to the fire spread characteristics of the surface of the thermal insulation material caused by the excessive rivets can be avoided.
Description
Technical field
The present invention relates to the crossing domain of material, environment and safety, in particular, relate to the insulation material Spread Characteristics experimental provision under a kind of additional adjustable constant radiation condition.
Background technology
Skyscraper is that modern social economy develops the inevitable outcome constantly accelerated with urbanization process rapidly, and the energy-saving heat preserving of skyscraper alien invasion has become a large subject under discussion of building field.Organic insulation material because of high insulating effect, the feature such as cost performance is high, quality is light, construction install convenience is widely used in both at home and abroad in building.But high-molecular organic material itself very easily burns, if without strict flame treatment, can burning spread rapidly after meeting fire, wherein the combustion characteristics of thermoplastic melting drippage after external heat source heating makes its fire risk increase, and the research therefore for the Spread Characteristics having insulation material under extraneous radiation source condition is significant.
Chinese patent 201110253772.2 mentions a kind of molten thermoplastic material burning behavior analogue experiment installation, thermoplastic sheet material is fixed on a panel that can change inclination angle to carry out experimental study, bottom of device adopts rectangle food tray to receive the melting dropping produced in combustion process, observe its Spread Characteristics in food tray, this device can research material inclination angle, material thickness and the far and near distance between top wall thermoplastic sheet and below food tray be on the impact of whole combustion process.Chinese patent 201310018248.6 studies the lower active liquid pool fire combustion characteristics formed of molten thermoplastic material drippage, because the developing characteristics of liquid pool fire has vital role for the behavior of the coupling combustion of whole thermoplastic, this " heating-melting drippage " experimental provision can be furtherd investigate the evolution of liquid pool fire preferably.Insulation material can be subject to the radiation heating effect of the fiery point of liquid pool fire or distant place that self melt flow is formed in actual fire process, thus accelerates burning and the spread process of insulation material, so extraneous radiation is one of key factor affecting heat preservation plate material burning.But, before this for the full-scale insulation material adverse current fire spread combustion characteristics research device existed under the high-power radiation condition in the adjustable external world, yet there are no Patents or bibliographical information.
Summary of the invention
The object of the invention is to propose a kind of insulation material and adjustablely determine Spread Characteristics research method under radiation source condition and device additional, by changing the size of radiation intensity, variety classes, shape can be studied and spread the insulation material Spread Characteristics of form.
Technical scheme of the present invention is: the insulation material Spread Characteristics experimental provision under a kind of additional adjustable constant radiation condition, comprise one block of insulation material, described insulation material be fixedly by bottom or top rivet is vertical with iron buckle is fixed in refractory plasterboard wall, ignition slot for igniting is fixed on apart from sheet material coboundary or lower limb a distance, respectively as two kinds of modes of igniting such as top igniting or bottom igniting, for lighting insulation material; Above-mentioned refractory plasterboard is vertically fixed on the first support; Described first support stands on directly over the first electronic balance, is separated by between support and balance with quartz plate, the first electronic balance record be insulation material burning time mass change; Melting trickling groove is placed immediately below described heat preservation plate material inward flange, for receiving the melting dropping produced after top insulation material is heated, trickling groove be positioned over directly over the second balance, the second electronic balance record be insulation material melting drop onto trickling groove in and occur burning mass change; Described second balance is positioned over directly over the second support; The contact of described first support and the second support not forces occurring, avoids the independent mass affected between gentle second balance of first day to measure; Thermopair tree is laid in described trickling groove inside, comprises some thermopairs, for measuring the change of temperature field in trickling groove; Radiation source is placed in described insulation material dead ahead, the radiation intensity size of radiation source is regulated by switch board, before experiment starts, refractory slab is placed in radiation source dead ahead, affect by it too early to prevent experiment insulation material, by radiant panel transformer, the radiation intensity of radiation source is adjusted to certain value subsequently and by pulley gear, refractory slab is elevated to a distance, radiant panel top after stable, enable heat preservation plate material front receive constant radiant to be completely advisable, described radiation source is placed on above the 3rd support; Described 3rd support can slide and fix, and radiation heat flux size suffered by heat insulation material surface can coordinate the distance of the 3rd support and the first support to come accurately to control by radiation source switch board; Position cloth one radiation heatflowmeter near described insulation material side, the radiation heat flux that heat insulation material surface time initial for monitoring experiment receives; Some video cameras can be laid in described insulation material side and dead ahead, for taking fire spread physical image feature during insulation material burning from different perspectives.
This device has following technical advantage:
(1) controlled and stable radiation intensity is realized, thus under studying different extraneous radiation intensity, the insulation material Spread Characteristics of various material and shape.
(2) mode of fixing insulation material fixes bottom or the top of sheet material by iron buckle and rivet, and the remainder of sheet material is without the need to fixing with rivet again, avoids too much rivet to the interference of heat insulation material surface Spread Characteristics.
(3) the collection mouth trickled on groove better can collect the object that insulation material melt-flow drops down, and the melting dropping that the groove that simultaneously trickles better can observe different types of insulation material forms the formation and development process of active liquid pool fire.
(4) ignition slot can be placed on the coboundary of sheet material apart from lower certain distance and lower edge, can provide multiple fire spread situation, as top catch fire adverse current fire spread, bottom catch fire following current fire spread, incendiary source ignite spread, line burning things which may cause a fire disaster ignites and spreads.
(5) for pyrolysis weight loss and the drippage weightlessness of top insulation material, the first electronic balance is adopted to measure in real time; Below burning food tray is received to the mass change of drippage molten thermoplastic and combustion process, adopt the second electronic balance to measure in real time; Two-part mass change independently measured by these two electronic balances, thus the burning can analyzing whole insulation material spreads characteristic.
Accompanying drawing explanation
Fig. 1 is the structural representation of the insulation material Spread Characteristics experimental provision under a kind of additional adjustable constant radiation condition;
Fig. 2 is the structural representation of this experimental provision insulation material fixed form;
Fig. 3 is this experimental provision ignition slot shape and structure figure;
Fig. 4 is the burning oil tray of this experimental provision melting dropping;
Wherein: 1 is insulation material (sheet material), 2 is refractory plasterboard, 3 is the first support, 4 is radiation heatflowmeter, 5a and 5b is ignition slot, 6a, 6b, 6c, 6d, 202 and 203, 204, 205, 206 and 207 is fixing rivet, 7 is quartz plate, 8 is the first electronic balance, 9 is the second electronic balance, 10 is the second support, 11 quartz plates, 12 is trickling groove, 13 is thermopair tree, 14 is the 3rd support, 15 is the 3rd support-moving wheel, 16 is radiant panel, 17 is electric-heating-wire-heating pipe array, 18 is radiant panel binding post, 19 is video camera, 20 is pulley gear fixed support, 21 is refractory slab, 22a and 22b is pulley, 23 is traction cable, 24 is generator, 301 to ignite plate for flame, 302 and 303 is ignition slot suspension member, 304 is igniter fuel, 401 for collecting mouth.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Embodiment 1:
Fig. 1 is the insulation material Spread Characteristics experimental provision under a kind of additional adjustable constant radiation condition, and Fig. 2 is the structural representation of this experimental provision insulation material and ignition slot fixed form, and Fig. 3 is the structural representation of this experimental provision ignition slot.Fig. 4 is the gathering-device of this experimental provision insulation material melting dropping.Under the condition of a kind of external radiation source of the present embodiment the fire spread combustion characteristics experimental provision of insulation material be positioned over one there is the exhaust fume collecting hood of smoke exhaust fan under, during the burning of such insulation material and the flue gas that produces of bottom food tray burning all by outside exhaust fume collecting hood discharge chamber.
As shown in Figure 1, the generous insulation material 1 surface black marking pen for 1m × 10cm × 2cm of one block length draws horizontal line along short transverse every 10cm, described insulation material 1 is vertically fixed on refractory plasterboard 2 that length, width and height are 1.6m × 70cm × 2cm, fixed form as shown in Figure 2, one piece of rectangular iron fabrication button 201 is fixed on the lower edge of insulation material 1, with four rivets 204,205,206 and 207, insulation material 1 is fixed between iron plate 201 and refractory slab 2.Described insulation material 1 coboundary two side fixes a rivet 202 and 203 respectively, for hanging ignition slot 5a, ignition slot 5a is adjusted to insulation material 1 coboundary 10cm place, carry out top to light and can study the downward adverse current Spread Characteristics of insulation material 1, or rectangle iron plate 201 is fixed on apart from insulation material 1 coboundary 10cm place, ignition slot 5b is fixed on distance insulation material 1 lower edge, thus studies upwards following current Spread Characteristics.As shown in Figure 3, ignition slot 5a is rectangle and upper surface is opening shape, and two sides are suspension member 302 and 303 for described ignition slot 5a structure, for hanging ignition slot 5a, is flame drainage plate 301 on front side of ignition slot 5a, flame can be concentrated and light insulation material 1.Described plasterboard 2 utilizes four rivet 6a, 6b, 6c and 6d is fixed on the first support 3 surface, for triangular structure is to increase its stability bottom first support 3, described first support 3 is positioned on quartz plate 7, the first electronic balance 8 is placed bottom quartz plate 7, the range of electronic balance 8 is 100kg, degree of accuracy is 0.01g, trickling groove 12 is placed at distance insulation material 1 lower limb 10cm place, described trickling groove 12 as shown in Figure 4, front side is collected mouth 401 and is designed to infundibulate to collect the melting dropping produced after insulation material 1 is heated better, main part is rectangle and upper surface open, to record the flow characteristics of melting trickling thing, trickling groove 12 inner vertical lays thermopair tree 13, described thermopair tree 13 comprises 30 thermopairs, can by the change of temperature field in described thermopair tree 13 record burning food tray and trickling characteristic.It is one piece of quartz plate 11 immediately below described trickling groove 12, electronic balance 9 is placed on below quartz plate 11, quartz plate 11 is used for endangering the heat of electronic balance 9 when completely cutting off burning, the range of electronic balance 9 is 20kg, degree of accuracy 0.1g, electronic balance 9 and quartz plate 11 entirety are placed on the second support 10, radiant panel 16 is placed on above the 3rd support 14, the heat generating components of this radiant panel 16 is one group of powerful vertically disposed electric-heating-wire-heating pipe 17, every electric-heating-wire-heating pipe 17 external application quartz glass sleeve carries out insulation blocking, by selecting the adjustment transformer 18 of self, its heating power can be controlled.Be movable pulley 15 bottom described 3rd support 14, the distance of the relative insulation material of radiant panel 16 can be changed by mobile pulley 15, thus change the radiation intensity of radiant panel 16 pairs of insulation materials.Pulley bracket 20, pulley 22a, 22b and refractory slab 21 are installed in support 14 top, and side is to being motor 24, and the thermopair of described trickling groove 12 inside all carries out real-time data acquisition in access data capture card.During experiment test, the DOL Data Output Line of described electronic balance 8 and electronic balance 9 all carries out real-time data acquisition in access data capture card.A radiation heatflowmeter 4 has been laid in insulation material 1 center; The front elevation of melt flow burning and insulation material 1 spread process in trickling groove 12 taken by video camera 19.The DOL Data Output Line of described thermopair tree 13 and radiation heatflowmeter 4 all access data collector carries out real-time data acquisition.
As shown in Figure 1, before experiment starts, insulation material 1 is fixed on refractory plasterboard 2 wall, opens motor 24, utilizes traction cable 23 to pull refractory slab 21, refractory slab 21 is placed in radiant panel 16 front, blocks radiant panel 16 by pulley 22a and 22b; Whole radiation appliance is moved to apart from insulation material 1 a distance, now radiant panel 16 apart from this distance of the surperficial 0.9m(of insulation material 1 depending on experiment condition), by regulating transformer 18, the electric-heating-wire-heating pipe 17 of radiant panel 16 heats up gradually, the radiation intensity of final radiant panel 16 will reach required experiment predetermined value, after stable, open video collector, Temperature sampler, and quality measurement program starts to record whole experimentation.Again utilize pulley gear that refractory slab 21 is elevated to radiant panel 16 oblique upper, now radiant panel 16 is by whole for direct radiation insulation material 1 surface, the fuel 304 in rearmost point combustion ignition slot 5a.
In experimentation, the mass change in the downward melting drippage process of insulation material 1, whole process measured by the first electronic balance 8, this rate of mass change is exactly the mass loss rate of molten thermoplastic material liquid; And the mass change of below food tray combustion process, will be measured by the second electronic balance 9, this mass change reflects the change procedure of trickling groove 12 combustion speed and drop quality of reception gait synthesis.
The not disclosed in detail part of the present invention belongs to the known technology of this area.
Although be described the illustrative embodiment of the present invention above; so that those skilled in the art understand the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various change to limit and in the spirit and scope of the present invention determined, these changes are apparent, and all innovation and creation utilizing the present invention to conceive are all at the row of protection in appended claim.
Claims (1)
1. the insulation material Spread Characteristics experimental provision under an additional adjustable constant radiation condition, it is characterized in that: comprise one block of insulation material, described insulation material be fixedly by bottom or top rivet is vertical with iron buckle is fixed in refractory plasterboard wall, ignition slot for igniting is fixed on apart from sheet material coboundary or lower limb a distance, respectively as two kinds of modes of igniting such as top igniting or bottom igniting, for lighting insulation material; Above-mentioned refractory plasterboard is vertically fixed on the first support; Described first support stands on directly over the first electronic balance, is separated by between support and balance with quartz plate, the first electronic balance record be insulation material burning time mass change; Melting trickling groove is placed immediately below described heat preservation plate material inward flange, for receiving the melting dropping produced after top insulation material is heated, trickling groove be positioned over directly over the second balance, the second electronic balance record be insulation material melting drop onto trickling groove in and occur burning mass change; Described second balance is positioned over directly over the second support; The contact of described first support and the second support not forces occurring, avoids the independent mass affected between gentle second balance of first day to measure; Thermopair tree is laid in described trickling groove inside, comprises some thermopairs, for measuring the change of temperature field in trickling groove; Radiation source is placed in described insulation material dead ahead, the radiation intensity size of radiation source is regulated by switch board, before experiment starts, refractory slab is placed in radiation source dead ahead, affect by it too early to prevent experiment insulation material, by radiant panel transformer, the radiation intensity of radiation source is adjusted to certain value subsequently and by pulley gear, refractory slab is elevated to a distance, radiant panel top after stable, enable heat preservation plate material front receive constant radiant to be completely advisable, described radiation source is placed on above the 3rd support; Described 3rd support can slide and fix, and radiation heat flux size suffered by heat insulation material surface can coordinate the distance of the 3rd support and the first support to come accurately to control by radiation source switch board; Position cloth one radiation heatflowmeter near described insulation material side, the radiation heat flux that heat insulation material surface time initial for monitoring experiment receives; Some video cameras can be laid in described insulation material side and dead ahead, for taking fire spread physical image feature during insulation material burning from different perspectives.
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Families Citing this family (7)
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| CN104155339A (en) * | 2014-08-01 | 2014-11-19 | 中国科学技术大学 | Experimental platform for melt dripping and ignition of vertically-fixed thermoplastic material |
| CN104902230B (en) * | 2015-05-19 | 2018-03-02 | 中国科学技术大学 | A kind of wall propagation of flame characteristic diagnostic device for eliminating ambient light interference |
| CN104990955A (en) * | 2015-07-21 | 2015-10-21 | 中国科学技术大学 | Downward flame spreading mechanism diagnosis device of foam material fixed to wall in bottom-supported and side-clamped mode |
| CN110455980A (en) * | 2019-08-26 | 2019-11-15 | 华侨大学 | A kind of timber fire under radiation environment spreads process test device |
| CN112697646B (en) * | 2020-12-25 | 2022-08-02 | 华北理工大学 | Variable-angle water film flow test device under action of external radiation |
| CN113092520A (en) * | 2021-04-08 | 2021-07-09 | 清华大学合肥公共安全研究院 | Experimental device for be used for research of solution stream drip |
| CN113092519B (en) * | 2021-04-08 | 2023-07-25 | 清华大学合肥公共安全研究院 | Wire combustion characteristic test device |
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| CN2241337Y (en) * | 1995-07-05 | 1996-11-27 | 青岛耐火材料厂 | Volatile component determining instrument |
| CN2811985Y (en) * | 2005-08-01 | 2006-08-30 | 重庆大学 | Dynamic heat release rate measurer in fire experiment of an atrium model |
| CN103076256A (en) * | 2012-12-31 | 2013-05-01 | 东北大学 | Device and method for detecting iron ore raw material |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56129840A (en) * | 1980-03-17 | 1981-10-12 | Toshiba Corp | Inspection apparatus for property of smoke |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241337Y (en) * | 1995-07-05 | 1996-11-27 | 青岛耐火材料厂 | Volatile component determining instrument |
| CN2811985Y (en) * | 2005-08-01 | 2006-08-30 | 重庆大学 | Dynamic heat release rate measurer in fire experiment of an atrium model |
| CN103076256A (en) * | 2012-12-31 | 2013-05-01 | 东北大学 | Device and method for detecting iron ore raw material |
| 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 |
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