CN204204278U - The experimental demonstration device that solid material glows - Google Patents
The experimental demonstration device that solid material glows Download PDFInfo
- Publication number
- CN204204278U CN204204278U CN201420718702.9U CN201420718702U CN204204278U CN 204204278 U CN204204278 U CN 204204278U CN 201420718702 U CN201420718702 U CN 201420718702U CN 204204278 U CN204204278 U CN 204204278U
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- China
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- cloche
- heating rod
- metab
- solid material
- demonstration device
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The experimental demonstration device that solid material glows, the cloche (2) comprising a metab (1) and be placed on metab, in cloche (2), hypomere is fixed with a perforated metal dish (3), perforated metal dish (3) is provided with a fixing pole (4), fixing pole (4) is provided with sample (7); Metab (1) offers guide hole (1.1) and heating rod hole (1.2) respectively, guide hole (1.1) is provided with the wireway (5) connecting oxygen and air respectively by flowmeter (8), and heating rod hole (1.2) are provided with the heating rod (6) that cloche (2) interior lower end is inserted in one end, cloche (2) bottom is stretched out in one end.The utility model structure is simple, has good demonstrating effect.
Description
Technical field
The utility model belongs to physical teaching model, especially the solid material experimental demonstration device technical field of structures of glowing.
Background technology
Glowing is that a kind of temperature is lower, fireless smoulder form.Timber in solid combustible, cigarette, paper, yarn fabric and various macromolecular material all can glow under certain conditions, and are transformed into flaming combustion under certain conditions.Glow and contact with fuel surface the heat produced by the oxygen in environment and maintain, (although very slow) more than the poison gas potpourri flaming combustion that its produces in addition, glow just can occur under low-temperature heat source, and latent time is long, and is difficult to extinguishing.Its danger early period of origination that is to glow is difficult to be aware, and can spread to a very large region gradually, discharges a large amount of toxic and harmful and makes people's Poisoning choke dead.
At present in teaching, this content is mainly lectured with theory, and static images assists introduction to be main, because content theoretical property is strong, lack row directly perceived, the generating process making learner be difficult to understand and grasp is glowed, influence factor and the conversion with flaming combustion, final results of learning are undesirable.If while theory study, in conjunction with the experimental teaching apparatus for demonstrating analog demenstration in addition that glows, then student can not only be helped the understanding of knowwhy, learning time can also be shortened, improve learning efficiency.The experimental facilities that glows that some colleges and universities and scientific research institutions use at present includes to glow and reacts body, well heater, precise electronic balance, thermopair, data acquisition unit, flowmeter, computing machine and be full of the steel cylinder of nitrogen and oxygen.
Summary of the invention
The purpose of this utility model is just in order to overcome above-mentioned mainly at present to lecture with theory, static images is assisted and introduced is main defect, the instrument related to for the existing experimental provision that glows is many, bulky, the features such as complicated operation provide that a kind of instrument and equipment is few, to install link simple, easy to operate, save time, experimental teaching apparatus for demonstrating that safe and reliable solid combustible glows.
The purpose of this utility model is achieved by the following technical solution.
The experimental demonstration device that solid material glows, the utility model comprises a metab and is placed in the cloche on metab, in cloche, hypomere is fixed with a perforated metal dish, perforated metal dish is provided with a fixing pole, fixing pole is provided with sample; Metab offers guide hole and heating rod hole respectively, and guide hole is provided with the wireway connecting oxygen and air respectively by flowmeter, and heating rod hole is provided with that lower end in cloche is inserted in one end, heating rod bottom cloche is stretched out in one end.
Heating rod, sample fixed bar and air supply system (replacing steel cylinder with oxygen bag and air bag) composition.Base is for installing wireway and heating rod; Cloche is used for ensuring steady air current and observation experiment phenomenon; Heating rod is for changing environmental gas temperature; Air supply system is for changing oxygen concentration in environment.
The process that student can be made by experiment intuitively to understand conventional solid material glow, smoldering velocity are with temperature and oxygen concentration change and the transformation rule to flaming combustion.
The beneficial effects of the utility model are, not only cigarette, paper rod can be fixed on the combustion position of fixing pole upper observation sample as shown in Figure 2.Whole burning zone can be divided into obvious three regions.Region I is pyrolysis zone, and namely the cigarette in experiment emerges from this region, and they are potpourris of the inflammable gas that discharges of sample pyrolysis and solid granule.The test of glowing of the materials such as sawdust, carbon dust, sponge can also be used for.Contribute to learner to the understanding of phenomenon of glowing and grasp, teaching efficiency is good.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the situation schematic diagram that glows.
Embodiment
See Fig. 1, the experimental demonstration device that solid material glows, the cloche 2 that the utility model comprises a metab 1 and is placed on metab, in cloche 2, hypomere is fixed with a perforated metal dish 3, perforated metal dish 3 is provided with a fixing pole 4, fixing pole 4 is provided with sample 7; Metab 1 offers guide hole 1.1 and heating rod hole 1.2 respectively, guide hole 1.1 is provided with the wireway 5 connecting oxygen and air respectively by flowmeter 8, and heating rod hole 1.2 is provided with that lower end in cloche 2 is inserted in one end, heating rod 6 bottom cloche 2 is stretched out in one end.
Heating rod, sample fixed bar and air supply system (replacing steel cylinder with oxygen bag and air bag) composition.Base is for installing wireway and heating rod; Cloche is used for ensuring steady air current and observation experiment phenomenon; Heating rod is for changing environmental gas temperature; Air supply system is for changing oxygen concentration in environment.
The process that student can be made by experiment intuitively to understand conventional solid material glow, smoldering velocity are with temperature and oxygen concentration change and the transformation rule to flaming combustion.
Claims (1)
1. the experimental demonstration device that glows of solid material, it is characterized in that, the cloche (2) comprising a metab (1) and be placed on metab, in cloche (2), hypomere is fixed with a perforated metal dish (3), perforated metal dish (3) is provided with a fixing pole (4), fixing pole (4) is provided with sample (7); Metab (1) offers guide hole (1.1) and heating rod hole (1.2) respectively, guide hole (1.1) is provided with the wireway (5) connecting oxygen and air respectively by flowmeter (8), and heating rod hole (1.2) are provided with the heating rod (6) that cloche (2) interior lower end is inserted in one end, cloche (2) bottom is stretched out in one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718702.9U CN204204278U (en) | 2014-11-26 | 2014-11-26 | The experimental demonstration device that solid material glows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420718702.9U CN204204278U (en) | 2014-11-26 | 2014-11-26 | The experimental demonstration device that solid material glows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204278U true CN204204278U (en) | 2015-03-11 |
Family
ID=52662213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420718702.9U Expired - Fee Related CN204204278U (en) | 2014-11-26 | 2014-11-26 | The experimental demonstration device that solid material glows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308009A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
-
2014
- 2014-11-26 CN CN201420718702.9U patent/CN204204278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308009A (en) * | 2020-03-05 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
| CN111308009B (en) * | 2020-03-05 | 2022-04-29 | 山东科技大学 | Mining high polymer material smoldering oxygen consumption and product synchronous test analysis device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20151126 |