CN103389254A - 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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- CN103389254A CN103389254A CN201310323651XA CN201310323651A CN103389254A CN 103389254 A CN103389254 A CN 103389254A CN 201310323651X A CN201310323651X A CN 201310323651XA CN 201310323651 A CN201310323651 A CN 201310323651A CN 103389254 A CN103389254 A CN 103389254A
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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 a kind of additional insulation material Spread Characteristics experimental provision of regulating under constant radiation condition.
Background technology
Skyscraper is that modern social economy develops the inevitable outcome of constantly accelerating with urbanization process rapidly, and the energy-saving heat preserving of the outer facade of skyscraper has become a large subject under discussion of building field.Organic insulation material because of high insulating effect, the characteristics such as cost performance is high, quality is light, construction install convenience are widely used in both at home and abroad in building.Yet itself very easily burns high-molecular organic material, if without strict flame treatment, can burn and spread rapidly after meeting fire, wherein the combustion characteristics of thermoplastic melting drippage after extraneous thermal source heating makes its fire risk increase, and is therefore significant for the research that the Spread Characteristics of insulation material under extraneous radiation source condition is arranged.
Chinese patent 201110253772.2 is mentioned a kind of molten thermoplastic material burning behavior analogue experiment installation, that thermoplastic sheet material is fixed on a panel that can change inclination angle and carries out experimental study, bottom of device adopts the rectangle food tray to receive the melting dropping that produces in combustion process, observe its Spread Characteristics in food tray, this device can the research material inclination angle, the far and near distance between material thickness and top wall thermoplastic sheet and below food tray is on the impact of whole combustion process.The lower active oil sump fire combustion characteristics that forms of Chinese patent 201310018248.6 research molten thermoplastic material drippages, because the developing characteristics of oil sump 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 oil sump fire preferably.Insulation material can be subject to self melting oil sump fire or the radiation heating effect of fiery point at a distance that stream forms in actual fire process, thereby accelerates burning and the spread process of insulation material, so extraneous radiation is to affect one of key factor of heat preservation plate material burning.But,, for there being the full-scale insulation material adverse current fire spread combustion characteristics research device that can regulate under extraneous high-power radiation condition, yet there are no Patents or bibliographical information before this.
Summary of the invention
The objective of the invention is to propose a kind of insulation material at additional adjustable Spread Characteristics research method and the device of determining under the radiation source condition,, by changing the size of radiation intensity, can study variety classes, shape and spread the insulation material Spread Characteristics of form.
Technical scheme of the present invention is: a kind of additional insulation material Spread Characteristics experimental provision of regulating under constant radiation condition, comprise an insulation material, described insulation material be fixedly by in bottom or top with rivet be fixed in refractory plasterboard wall vertical with iron buckle, the ignition slot that is used for igniting is fixed on apart from sheet material coboundary or lower limb a distance,, as two kinds of modes of igniting such as top igniting or bottom igniting, be used for lighting insulation material respectively; Above-mentioned refractory plasterboard vertically is fixed on the first support; Described the first support stands on directly over the first electronic balance, be separated by with quartz plate between support and balance, the first electronic balance record be the insulation material burning time mass change; Place melting trickling groove under described heat preservation plate material inward flange, be used for to receive the be heated melting dropping of rear generation of top insulation material, the trickling groove is positioned over the straight and even top of second day, and what the second electronic balance recorded is that the insulation material melting drops onto in the trickling groove and the mass change of burning occurs; Described second day keeps flat and is placed in directly over the second support; Contacting of power do not occur with the second support in described the first support, and the independent mass of avoiding affecting between gentle the second balance of first day is measured; The inner thermopair of laying of described trickling groove is set, and comprises some thermopairs, is used for measuring the change of temperature field in the 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 the radiation source dead ahead, to prevent that experiment is affected by it too early with insulation material, by the radiant panel transformer, the radiation intensity of radiation source being adjusted to certain subsequently is worth after stable, by pulley gear, refractory slab is elevated to a distance, radiant panel top, make the heat preservation plate material front can receive constant radiation fully and be advisable, described radiation source is placed on the 3rd support top; Described the 3rd support can slide and fix, and the suffered radiation heat flux size of heat insulation material surface can coordinate the distance of the 3rd support and the first support accurately to control by the radiation source switch board; Near position cloth one radiation heatflowmeter described insulation material side, the radiation heat flux that the heat insulation material surface when initial for monitoring experiment receives; Some video cameras can be laid in described insulation material side and dead ahead, the fire spread physical image feature while being used for taking from different perspectives the insulation material burning.
This device has following technical advantage:
(1) realize controlled and stable radiation intensity, thereby study under different extraneous radiation intensity the insulation material Spread Characteristics of various materials and shape.
(2) fixedly the mode of insulation material is fixed bottom or the top of sheet material by iron buckle and rivet, and the remainder of sheet material need not to fix with rivet again, avoids the interference of too much rivet to the heat insulation material surface Spread Characteristics.
(3) the collection mouth of trickling on groove can better be collected the object that the insulation material melt-flow drops down, and the melting dropping that the groove that trickles simultaneously can better be observed different types of insulation material forms the formation and development process of active oil sump fire.
(4) ignition slot can be placed on sheet material coboundary apart from lower certain distance and lower edge, multiple fire spread situation can be provided, as top catch fire adverse current fire spread, bottom catch fire following current fire spread, incendiary source ignite spread, the line burning things which may cause a fire disaster ignites and spreads etc.
(5) weightless for pyrolysis weight loss and the drippage of top insulation material, adopt the first electronic balance to measure in real time; Receive the mass change of drippage molten thermoplastic and combustion process for below burning food tray, adopt the second electronic balance to measure in real time; These two electronic balances are the two-part mass change of independent measurement respectively, thereby the burning that can analyze whole insulation material spreads characteristic.
Description of drawings
Fig. 1 is a kind of additional structural representation of regulating the insulation material Spread Characteristics experimental provision under 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 are 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 are the trickling groove, 13 are the 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 the radiant panel binding post, 19 is video camera, 20 is the pulley gear fixed support, 21 is refractory slab, 22a and 22b are pulley, 23 are the traction cable, 24 is generator, 301 are the flame plate of igniting, 302 and 303 is the ignition slot suspension member, 304 is igniter fuel, 401 for collecting mouth.
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
Embodiment 1:
Fig. 1 is a kind of additional insulation material Spread Characteristics experimental provision of regulating under 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 of the present embodiment source, the fire spread combustion characteristics experimental provision of insulation material is positioned under an exhaust fume collecting hood with smoke exhaust fan, like this during the insulation material burning and the flue gas that produces of bottom food tray burning all can discharge by exhaust fume collecting hood outdoor.
As shown in Figure 1, the generous insulation material for 1m * 10cm * 2cm of one block length 1 surface is drawn horizontal line along short transverse every 10cm with the black marking pen, it is high on the refractory plasterboard 2 of 1.6m * 70cm * 2cm that described insulation material 1 vertically is fixed on length and width, fixed form as shown in Figure 2, a 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 sides are fixed respectively a rivet 202 and 203, be used for hanging ignition slot 5a, ignition slot 5a is transferred to insulation material 1 coboundary 10cm place, carrying out top lights and can study the downward adverse current Spread Characteristics of insulation material 1, perhaps rectangle iron plate 201 is fixed on apart from insulation material 1 coboundary 10cm place, ignition slot 5b is fixed on apart from insulation material 1 lower edge, thereby the following current Spread Characteristics that makes progress is studied.As shown in Figure 3, ignition slot 5a is that rectangle and upper surface are the opening shape to described ignition slot 5a structure, and two sides are suspension member 302 and 303, is used for hanging ignition slot 5a, and ignition slot 5a front side is flame drainage plate 301, flame can be concentrated and is lighted insulation material 1.described plasterboard 2 utilizes four rivet 6a, 6b, 6c and 6d are fixed on the first support 3 surfaces, the first support 3 bottoms are that triangular structure is to increase its stability, described the first support 3 is positioned on quartz plate 7, the first electronic balance 8 is placed in quartz plate 7 bottoms, the range of electronic balance 8 is 100kg, degree of accuracy is 0.01g, place trickling groove 12 apart from insulation material 1 lower limb 10cm place, described trickling groove 12 as shown in Figure 4, front side is collected mouthfuls 401 and is designed to infundibulate in order to collect better the be heated melting dropping of rear generation of insulation material 1, main part is rectangle and upper surface open, in order to record the flow characteristics of melting trickling thing, the inner thermopair of vertically laying of trickling groove 12 sets 13, described thermopair tree 13 comprises 30 thermopairs, can be by change of temperature field and the trickling characteristic in described thermopair tree 13 record burning food trays.it is a quartz plate 11 under described trickling groove 12, electronic balance 9 is placed on quartz plate 11 belows, heat to electronic balance 9 when quartz plate 11 is used for isolated burning endangers, the range of electronic balance 9 is 20kg, degree of accuracy 0.1g, electronic balance 9 and quartz plate 11 integral body are placed on the second support 10, radiant panel 16 is placed on the 3rd support 14 tops, 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 sleeves carry out insulation blocking, by selecting the adjusting transformer 18 of self, can control its heating power.Described the 3rd support 14 bottoms are movable pulley 15, can change by mobile pulley 15 distance of radiant panel 16 relative insulation materials, thereby change the radiation intensity of 16 pairs of insulation materials of radiant panel.Pulley bracket 20, pulley 22a, 22b and refractory slab 21 are installed in support 14 tops, and side direction is motor 24, and the thermopair of described trickling groove 12 inside all carries out real-time data acquisition in the access data capture card.During experiment test, the DOL Data Output Line of described electronic balance 8 and electronic balance 9 is all carried out real-time data acquisition in the access data capture card.Laid a radiation heatflowmeter 4 in insulation material 1 center; Video camera 19 is taken the front elevation of the interior molten stream burning of trickling groove 12 and insulation material 1 spread process.The DOL Data Output Line of described thermopair tree 13 and radiation heatflowmeter 4 all access data collector is carried out real-time data acquisition.
As shown in Figure 1, before experiment started, insulation material 1 was fixed on refractory plasterboard 2 walls, opens motor 24, by pulley 22a and 22b, utilized traction cable 23 to pull refractory slab 21, and refractory slab 21 is placed in radiant panel 16 the place aheads, blocked radiant panel 16; Whole radiation appliance is moved to apart from insulation material 1 a distance, this moment, radiant panel 16 was 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 desired 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 uppers, radiant panel 16 is with the whole insulation material of direct radiation 1 surface at this moment, and rearmost point fires the fuel 304 in ignition slot 5a.
In experimentation, the mass change in the downward melting drippage process of insulation material 1, measured whole process by the first electronic balance 8, and 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, and this mass change has reflected the change procedure of trickling groove 12 internal combustion speed and drop quality of reception gait synthesis.
The not detailed disclosed part of the present invention belongs to the known technology of this area.
Although the above is described the illustrative embodiment of the present invention; 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 variations appended claim limit and the spirit and scope of the present invention determined in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (1)
1. additional insulation material Spread Characteristics experimental provision of regulating under constant radiation condition, it is characterized in that: comprise an insulation material, described insulation material be fixedly by in bottom or top with rivet be fixed in refractory plasterboard wall vertical with iron buckle, the ignition slot that is used for igniting is fixed on apart from sheet material coboundary or lower limb a distance,, as two kinds of modes of igniting such as top igniting or bottom igniting, be used for lighting insulation material respectively; Above-mentioned refractory plasterboard vertically is fixed on the first support; Described the first support stands on directly over the first electronic balance, be separated by with quartz plate between support and balance, the first electronic balance record be the insulation material burning time mass change; Place melting trickling groove under described heat preservation plate material inward flange, be used for to receive the be heated melting dropping of rear generation of top insulation material, the trickling groove is positioned over the straight and even top of second day, and what the second electronic balance recorded is that the insulation material melting drops onto in the trickling groove and the mass change of burning occurs; Described second day keeps flat and is placed in directly over the second support; Contacting of power do not occur with the second support in described the first support, and the independent mass of avoiding affecting between gentle the second balance of first day is measured; The inner thermopair of laying of described trickling groove is set, and comprises some thermopairs, is used for measuring the change of temperature field in the 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 the radiation source dead ahead, to prevent that experiment is affected by it too early with insulation material, by the radiant panel transformer, the radiation intensity of radiation source being adjusted to certain subsequently is worth after stable, by pulley gear, refractory slab is elevated to a distance, radiant panel top, make the heat preservation plate material front can receive constant radiation fully and be advisable, described radiation source is placed on the 3rd support top; Described the 3rd support can slide and fix, and the suffered radiation heat flux size of heat insulation material surface can coordinate the distance of the 3rd support and the first support accurately to control by the radiation source switch board; Near position cloth one radiation heatflowmeter described insulation material side, the radiation heat flux that the heat insulation material surface when initial for monitoring experiment receives; Some video cameras can be laid in described insulation material side and dead ahead, the fire spread physical image feature while being used for taking from different perspectives the insulation material burning.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310323651.XA CN103389254B (en) | 2013-07-30 | 2013-07-30 | Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition |
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| CN201310323651.XA CN103389254B (en) | 2013-07-30 | 2013-07-30 | Experiment device for fire spread characteristics of thermal insulation material under external adjustable constant radiation condition |
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| CN103389254A true CN103389254A (en) | 2013-11-13 |
| CN103389254B CN103389254B (en) | 2015-04-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104902230A (en) * | 2015-05-19 | 2015-09-09 | 中国科学技术大学 | Wall surface flame spreading characteristic diagnostic device 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 |
| CN112697646A (en) * | 2020-12-25 | 2021-04-23 | 华北理工大学 | Variable-angle water film flow test device under action of external radiation |
| CN113092519A (en) * | 2021-04-08 | 2021-07-09 | 清华大学合肥公共安全研究院 | Wire rod combustion characteristic test device |
| 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 |
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Patent Citations (5)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104902230A (en) * | 2015-05-19 | 2015-09-09 | 中国科学技术大学 | Wall surface flame spreading characteristic diagnostic device eliminating ambient light interference |
| 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 |
| CN112697646A (en) * | 2020-12-25 | 2021-04-23 | 华北理工大学 | Variable-angle water film flow test device under action of external radiation |
| 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 |
| CN113092519A (en) * | 2021-04-08 | 2021-07-09 | 清华大学合肥公共安全研究院 | Wire rod combustion characteristic test device |
| 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 |
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| CN103389254B (en) | 2015-04-22 |
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