Ⅰ kind: The colliery uses electric device (methane)

Ⅱ kind: The other volatile gas atmosphere outside removing a coal mine uses electric device

Ⅱ kind the character that electric equipment can accept an applicable volatile gas (explode easily and spend) farther classification:

Ⅱ A: Toluene, methanol, alcohol, derv more than 100 kinds

Ⅱ B: Ethylene, gas wait for nearly 30 kinds

Ⅱ C: Carbon of hydrogen, acetylene, 2 vulcanization

4, Volatile gas presses discretion of spontaneous combustion temperature in group

Temperature group is fastened ℃ of highest surface temperature

T1 450 Toluene, xylene

T2 300 Ethylbenzene Etc

T3 200 Derv Etc

T4 135 2 armour aether Etc

T5 100 2 vulcanization carbon

T6 85 Inferior ester of nitric acid second Etc

5, Explosion proof of explosion proof electric machinery indicates

(1) lie between explode model citing of mark of explosion proof of three-phase asynchronous electromotor:

ExdI The colliery is used lie between explode model electric machinery

Exd II BT4 The factory uses IIBod T4 form Be like: Place of 4 fluorine ethylene
上一页 1 2 34 5 下一页