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, explosion-proof electromagnetic valve is a device may ignite explosive gas mixture components are all enclosed in a casing ,the casing can Jeremy Scott Adidas, withstand any engagement through the shell su***ce or structural gap ,penetrate to the interior of the casing of combustible mixture in an internal explosion without damage, and will not cause by a variety of external ,gas or vapour the formation of explosive environment light ,may spark, electric arc and dangerous temperature parts are placed in flameproof enclosure ,flameproof enclosure to make interior space of the apparatus and the surrounding environment .
Flameproof enclosure gap, due to electrical equipment respiration and gas permeation, possible inner explosive gas mixture .Explosion-proof electromagnetic valve solenoid valve 1,has the advantages of long service life .
2 ,solenoid valve working standard: sub-system of long-term ,repeated work system and work system three .Explosion proof electromagnetic valve are long-term work system ,whereby the work coil to allow long-term electricity .
For a long time valve opening only short time close to the situation, then use the normally open electromagnetic valve .Used in short-term work system and a large bulk ,they can make a special order to reduce power consumption .
3 ,solenoid valve working frequency :high frequency movements ,the structure should be preferred direct action solenoid valve ,preferred to listen to the AC power supply .Electromagnetic valve explosion-proof grade China explosion-proof grade standard for GB3836.
1-2000 electrical apparatus for Jeremy Scott Adidas explosive gas atmospheres,the standard will be composed of the following type of explosion protection special standard additions or modifications .GB 3836.2 electrical apparatus for explosive gas atmospheres-- Part second: Flameproof Enclosure GB 3836.
3 electrical apparatus for explosive gas atmospheres-- Part third: increased safety GB 3836.4 electrical apparatus for explosive gas atmospheresPart fourth: intrinsic safety I GB 3836.5 electrical apparatus for explosive gas atmospheresfifth part: positive pressure type P GB 3836.
6 electrical apparatus for explosive gas atmospheres-- Part sixth: oil filling type O GB 3836.7 electrical apparatus for explosive gas atmospheres-- Part seventh: powder filling GB 3836.9 electrical apparatus for explosive gas atmospheres-- Part ninth: encapsulation GB 7957 minesafety cap lamp above standards and this standard does not apply to electrical equipment ,a detonator, blasting device tester and ignition circuit tester Ex is a universal symbol ,said explosive D that time flameproof explosion-proof type for D .
I or II said electrical equipment classification ,I for mine used electrical equipment ,in addition to other II Mine explosive gas environment with equipment. Wherein ,II type flameproof intrinsically safe type d and I electric equipment is divided into
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