What is an explosion-proof solenoid valve

What is an explosion-proof solenoid valve

    The coil shell of the explosion-proof solenoid valve not only has the explosion-proof effect of withstanding the gas explosion pressure, but the gas solenoid valve has a blocking effect on the gas explosion energy transmission and has higher safety performance. It is a special solenoid valve series product specially designed to transmit inflammable and explosive media or dedicated to explosive hazardous locations. Different environments and fluids should choose solenoid valves with different explosion-proof levels.

    The main explosion-proof solenoid valves can also be divided into:

    Positive pressure type: Keep the pressure of the internal protective gas higher than the surrounding pressure to prevent the explosive mixture from entering the shell or enough protective gas to pass through the shell to reduce the concentration of the internal explosive mixture below the lower explosive limit.

    Increased safety type: Arc, spark and dangerous high temperature will not be generated during normal operation. The high temperature solenoid valve will take further protective measures in the structure to improve the safety and reliability of the equipment.

    Encapsulated type: It encapsulates the arc, spark or high temperature part that may ignite the explosive mixture, so that it cannot ignite the surrounding explosive mixture.

    Intrinsically safe type: the internal circuit of the equipment under the specified conditions, the electric spark and thermal effects produced by the magnetic flip-column level gauge in normal operation or the specified fault state cannot ignite the explosive mixture.

    Explosion-proof type: When the equipment is in normal operation, the parts that can generate sparks and arcs are placed in a flameproof enclosure. The explosion-proof enclosure of the electric actuator can withstand the internal explosion pressure without being damaged, and can ensure that the internal flame gas spreads through the gap When the energy is reduced, it is not enough to detonate the gas outside the shell

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