Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. There are many types of it. Among them, explosion-proof solenoid valve is also used more often.

The explosion-proof solenoid valve seals all the parts of the equipment that may ignite explosive gas mixtures in a shell, and its shell can withstand any joint surface or structural gap through the shell, and the flammable mixture that penetrates into the shell will explode inside without damage, and will not It will cause the ignition of an explosive environment formed by one or more gases or vapors outside. Put the parts that may generate sparks, arcs and dangerous temperatures into the flameproof enclosure, and the flameproof enclosure will make the internal space of the equipment and the surrounding environment separated. There are gaps in the flameproof enclosure, and due to the respiration and gas penetration of electrical equipment, explosive gas mixtures may exist inside.

Therefore, it is often used to transmit flammable and explosive media, such as gas, hydrogen, and natural gas. High safety performance; solenoid valves with different explosion-proof grades should be selected for different environments and fluids.

advantage:

1. The explosion-proof solenoid valve has a long working life.

2. Working system of explosion-proof solenoid valve: long-term working system, repeated short-time working system and short-time working system. Explosion-proof solenoid valves are all long-term working systems, that is, the coils are allowed to work with electricity for a long time. For the situation that the valve is opened for a long time and only closed for a short time, a normally open solenoid valve should be selected. When it is used in a short-time work system and the batch size is large, special orders can be made to reduce power consumption.

3. Working frequency of explosion-proof solenoid valve: When the operating frequency is high, the structure should be a direct-acting solenoid valve, and the power supply should be AC.

Explosion-proof grade

my country's explosion-proof grade standard is "GB3836.1-2000 Electrical Equipment for Explosive Gas Atmospheres", which will be supplemented or modified by the following special standards for explosion-proof types.

GB 3836.2 Electrical apparatus for explosive gas atmospheres Part 2: Flameproof type "D"

GB 3836.3 Electrical Apparatus for Explosive Gas Atmospheres Part 3: Increased Safety "E"

GB 3836.4 Electrical Apparatus for Explosive Gas Atmospheres Part 4: Intrinsically Safe "I"

GB 3836.5 Electrical apparatus for explosive gas atmospheres Part 5: Positive pressure type "P"

GB 3836.6 Electrical apparatus for explosive gas atmospheres Part 6: Oil-filled type "O"

GB 3836.7 Electrical equipment for explosive gas atmospheres Part 7: Sand-filled type "Q"

GB 3836.9 Electrical Apparatus for Explosive Gas Atmospheres Part 9: Encapsulation Type "M"

GB 7957 Mine helmet lamp

The above standards and this standard are not applicable to medical electrical equipment, detonators, detonator testers and ignition circuit testers