SU535494A1 - Method for determining the effect of gas extinguishing agents on spontaneous combustion - Google Patents
Method for determining the effect of gas extinguishing agents on spontaneous combustionInfo
- Publication number
- SU535494A1 SU535494A1 SU2057515A SU2057515A SU535494A1 SU 535494 A1 SU535494 A1 SU 535494A1 SU 2057515 A SU2057515 A SU 2057515A SU 2057515 A SU2057515 A SU 2057515A SU 535494 A1 SU535494 A1 SU 535494A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- spontaneous combustion
- effect
- determining
- extinguishing agents
- gas extinguishing
- Prior art date
Links
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
ного горени (700-800°С) определ ют воздействие и концентрацию средства тушени , при котором прекращаетс самовозгорание.Burning (700-800 ° C) determines the effect and concentration of extinguishing agent at which spontaneous combustion ceases.
Использу каждый раз новый образец и разные концентрации газовоздушной смеси, устанавливают минимальную концентрацию газовоздушной смеси, при которой прекращаетс процесс самовозгорани .Using each time a new sample and different concentrations of the gas-air mixture, the minimum concentration of the gas-air mixture is established at which the spontaneous combustion process stops.
На фиг. 1 представлен график изменени температуры в образце при введении СО2; на фиг. 2 - то же, при введении состава БФ-2.FIG. Figure 1 shows a graph of the temperature change in a sample with the introduction of CO2; in fig. 2 - the same, with the introduction of the composition of BF-2.
Предлагаемый способ опробирован в лабораторных услови х.The proposed method was tested in laboratory conditions.
Пример. В сушильный щкаф марки Ш-005 помещают испытуемый образец - рыбную муку. Рыбную муку засыпают в проволочнзю корзиночку кубической формы с размером ребра 50 мм. JB шкафу посто нно поддерлсивают температуру 20Q°C, котора регулируетс регулировочной термопарой, подключенной к милливольтметру. После того, как образец подогреваетс до 200°С, начинаетс процесс теплового са.мовозгорани муки. Контроль за процессом самовозгорани осуществл етс трем термопарами ТХА с диаметром термоэлектродов 0,7 мм. Одна термопара помещаетс в центре образца, а втора на его поверхности, а треть на рассто нии 30 мм от поверхности. В первой серии опытов получена крива температуры самовозгорани образца. В последующих опытах в шкаф ввод т средства газового тушени : углекислота и состав БФ-2 в различных концентраци х. Ввод средств тушени заданной концентрации осуществл етс в момент достижени темнературы в центре образца 220°С.Example. The test specimen - fish meal is placed in the drying cabinet Sh-005. Fishmeal is poured into a wire cube-shaped basket with a rib size of 50 mm. The JB cabinet is constantly maintained at a temperature of 20Q ° C, which is controlled by an adjusting thermocouple connected to a millivolt meter. After the sample is heated to 200 ° C, the process of thermal combustion of flour begins. The spontaneous combustion process is monitored by three THA thermocouples with a 0.7 mm thermoelectrode diameter. One thermocouple is placed in the center of the sample, and the second on its surface, and a third at a distance of 30 mm from the surface. In the first series of experiments, a curve of the temperature of spontaneous combustion of the sample was obtained. In subsequent experiments, gas extinguishing agents are introduced into the cabinet: carbon dioxide and the composition of BF-2 in various concentrations. The introduction of extinguishing agents of a given concentration occurs at the moment when the temperature at the center of the sample reaches 220 ° C.
Из сравени графика температуры самовозгорани с графиком температур в образце приFrom a comparison of the spontaneous combustion temperature plot with the temperature plot in the sample at
подаче средств тушени видно, что состав БФ-2 не прекращает процесс самовозгорани , а углекислота при концентрации ее 30% в смеси с воздухом прекращает процесс теплового самовозгорани рыбиой муки.supply of extinguishing agents shows that the composition of BF-2 does not stop the process of spontaneous combustion, and carbon dioxide at a concentration of 30% mixed with air stops the process of thermal spontaneous combustion of fish meal.
Использование предлагаемого способа позвол ет определ ть воздействие средств газового тущени и концентрацию средств тущени на процесс теплового самовозгорани безThe use of the proposed method allows to determine the effect of gassing means and the concentration of gushing agents on the process of thermal spontaneous combustion without
проведени натурных испытаннй. Это обеспечивает простоту проведени испытаний, так как воспроизведение теплового самовозгорани в натуре очень сложно.carrying out field tests. This provides ease of testing, since reproducing thermal spontaneous combustion in nature is very difficult.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2057515A SU535494A1 (en) | 1974-09-06 | 1974-09-06 | Method for determining the effect of gas extinguishing agents on spontaneous combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2057515A SU535494A1 (en) | 1974-09-06 | 1974-09-06 | Method for determining the effect of gas extinguishing agents on spontaneous combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU535494A1 true SU535494A1 (en) | 1976-11-15 |
Family
ID=20595271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2057515A SU535494A1 (en) | 1974-09-06 | 1974-09-06 | Method for determining the effect of gas extinguishing agents on spontaneous combustion |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU535494A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353763A (en) * | 2011-09-14 | 2012-02-15 | 北京科技大学 | Small simulation device for testing spontaneous combustion period of coal |
| CN102445527A (en) * | 2011-09-23 | 2012-05-09 | 太原理工大学 | Testing device for simulating spontaneous combustion and fire extinguishment processes of coal |
-
1974
- 1974-09-06 SU SU2057515A patent/SU535494A1/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353763A (en) * | 2011-09-14 | 2012-02-15 | 北京科技大学 | Small simulation device for testing spontaneous combustion period of coal |
| CN102353763B (en) * | 2011-09-14 | 2014-05-28 | 北京科技大学 | Small simulation device for testing spontaneous combustion period of coal |
| CN102445527A (en) * | 2011-09-23 | 2012-05-09 | 太原理工大学 | Testing device for simulating spontaneous combustion and fire extinguishment processes of coal |
| CN102445527B (en) * | 2011-09-23 | 2014-08-06 | 太原理工大学 | Testing device for simulating spontaneous combustion and fire extinguishment processes of coal |
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