SU158432A1 - - Google Patents
Info
- Publication number
- SU158432A1 SU158432A1 SU772895A SU772895A SU158432A1 SU 158432 A1 SU158432 A1 SU 158432A1 SU 772895 A SU772895 A SU 772895A SU 772895 A SU772895 A SU 772895A SU 158432 A1 SU158432 A1 SU 158432A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- temperatures
- explosion
- permissible
- electrical equipment
- chamber
- Prior art date
Links
- 239000000203 mixture Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000009114 investigational therapy Methods 0.000 claims 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Description
Известны способы определени донустнмых безопасных температур нагрева взрывозащищенного электрооборудовани и устройства дл их осуществлени .Methods are known for determining the bottom safe heating temperatures of explosion-proof electrical equipment and devices for their implementation.
По предлагаемому способу повышение допустимых безопасных температур нагрева взрывозащищенного электрооборудовани достигаетс в результате того, что за предел допустимого нагрева принимают температуру поджигани холод)1ых горючих смесей нагретымн телами - корпусами электрозащитного оборудовани . Дл определенн этих допустимых безопасных температур нредложенное устройство выполнено в виде взрывной камеры с вентил ми дл ввода и вывода горючей смеси. В камеру помещена исследуема модель с заключенным в нее нагревателем и с термопарами дл регистрации температур поджигани .According to the proposed method, an increase in the permissible safe heating temperatures of explosion-proof electrical equipment is achieved as a result of the firing temperature taken at the cold) of the first combustible mixtures by heated bodies - electrical equipment housings. For certain of these acceptable safe temperatures, the proposed device is in the form of an explosion chamber with valves for inlet and outlet of the combustible mixture. A test model with a heater enclosed in it and with thermocouples for recording ignition temperatures are placed in the chamber.
На чертеже изображено устройство дл осуществлени предлагаемого способа.The drawing shows a device for carrying out the proposed method.
Модель / с заключе ным в нее нагревателем 2 по.мещаетс во взрывную камеру 3. Объем камеры 3 должен значительно превосходить размеры модели 1 дл исключени возможных искажений. К корпусу модели / подведены концы термопар 4, фиксируюохих максимальную температуру в различных точках модели. Камера 3 снабжена вентил ми 5 дл ввода и вывода горючей смеси и отбора ее проб на анализ. Дл предотвращени большого роста давлени при сгорании смеси вThe model / with the heater 2 enclosed in it is placed in the explosion chamber 3. The volume of the chamber 3 must considerably exceed the dimensions of the model 1 to eliminate possible distortions. The ends of thermocouples 4 are connected to the case of the model / terminal, fixing the maximum temperature at various points of the model. Chamber 3 is equipped with valves 5 for input and output of the combustible mixture and for sampling it for analysis. To prevent a large increase in pressure during the combustion of the mixture in
камере 3 расположена легко разрывающа с мембрана 6. Через окно 7, закрытое пластинкой из плексигласа или стекла, производ т визуальное наблюдение за возможным по влением холодного пламени в предвзрывной период. С помощью вентил тора 8 смесь в камере может перемещатьс .The chamber 3 is positioned with a membrane 6 that is easily ruptured. Through a window 7, covered with a plexiglas or glass plate, visual observation is made of the possible appearance of a cold flame in the pre-explosion period. With the help of a fan 8, the mixture in the chamber can be moved.
Предмет изобретени Subject invention
Claims (2)
Publications (1)
Publication Number | Publication Date |
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SU158432A1 true SU158432A1 (en) |
Family
ID=
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140004A (en) * | 1977-11-09 | 1979-02-20 | Stauffer Chemical Company | Apparatus for determining the explosion limits of a flammable gas |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140004A (en) * | 1977-11-09 | 1979-02-20 | Stauffer Chemical Company | Apparatus for determining the explosion limits of a flammable gas |
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