Common five types of explosion-proof solenoid valve introduction

The casing of the explosion-proof solenoid valve can withstand any joint surface or structural gap through the casing, and the flammable mixture penetrating into the interior of the casing will explode inside without damage and will not cause an explosive environment formed by one or more gases or vapors externally. Ignition, placing parts that may generate sparks, arcs, and dangerous temperatures into a flameproof enclosure that separates the interior of the equipment from the surrounding environment. There is a gap in the flameproof enclosure, and there may be an explosive gas mixture inside due to the respiration of the electrical equipment and the gas permeation.
    Common explosion-proof solenoid valves are mainly in five categories:
    1. Increased safety type: During normal operation, no arc, spark and low temperature are generated, and the maintenance step is further accepted in the construction, and the safety and reliability of the equipment are improved.
    2. Flameproof type: When the equipment is set up in normal operation, the parts that can generate the spark arc are placed in the flameproof enclosure. The flameproof enclosure can accept the external explosion pressure without damage, and can pass the external flame gas. When the gap is transmitted, the energy is reduced, and the gas outside the shell is detonated.
    3. Intrinsically safe type: setting the circuit outside the equipment under the premise of the rules, the sparks and thermal effects generated by normal things or regular faults can not extinguish explosive confounders.
    4. Positive pressure type: adhere to the external maintenance gas pressure higher than the surrounding pressure to prevent explosive contaminants from entering the outer casing or a sufficient amount of maintenance gas through the outer casing, so that the concentration of external explosive contaminants falls below the upper explosion limit.
    5. Pouring type: It will produce an arc, spark or high temperature partial encapsulation that ignites the explosive mixture so that it does not ignite the surrounding explosive mixture.