EVALUATION EXPLOSION DISCRETE HEATED ELECTRICAL COMPONENTS FOR EXPLOSIVE MIXTURES CATEGORY IIA

The article presents the results of studies on ignition of propane mixture heated explosion-proof electrical equipment of small elements. These elements are different sensors, integrated circuits, resistors, capacitors. At various damage electronic circuits they are heated. This can lead to an explosion of the gas mixture. To assess this risk, the method of measurement of electrical parameters of electronic components electrical equipment in the explosion of the gas mixture. The gas mixture is the most flammable composition. The values obtained ignition electric power related to the geometrical dimensions of electronic components elektooborudovanie. Ensure the safety of the use of electronic components in an explosive mixture of propane and air power can be restricted to them. In these studies described allowable values are defined. Proposed to conduct tests of thermocouples in a mixture of hydrogen and oxygen. The composition of this mixture replaces a mixture of propane and air power ignition from heated elements. And allows to provide the necessary security operation thermocouples.al Research Program ONZ-3.

Keywords

Thermocouple, igniting power, ignition temperature, propane, air blast, hydrogen.

Issue number: 7
Year: 2016
ISBN:
UDK: 621.31:622
DOI:
Authors: Okhapkin A. Yu.

About authors: Okhapkin A. Yu., Candidate of Technical Sciences, Senior Researcher, Institute of Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia, e-mail 1958221@yahoo.com.

REFERENCES: 1. Elektrooborudovanie vzryvozashchishchennoe s vidom vzryvozashchity «iskrobezopasnaya elektricheskaya tsep’», tekhnicheskie trebovaniya i metody ispytaniy. GOST 22782.5-78 (Explosion-proof electrical equipment with type of protection «intrinsically safe», technical requirements and test methods. State Standart 22782.5-78), Moscow, Izd-vo standartov, 1979, 69 p.
2. Erygin A. T., Okhapkin A. Yu. Gornyy informatsionno-analiticheskiy byulleten’. Special issue 8. 2009, pp. 149–154.
3. Okhapkin A. Yu. Gornyy informatsionno-analiticheskiy byulleten’. Special issue 8. 2009, pp. 313–315.
4. Erygin A. T., Okhapkin A. Yu. Gornyy informatsionno-analiticheskiy byulleten’. Special issue 1. 2012, pp. 526–533.
Mining World Russia
Subscribe for our dispatch