In chemical explosion-proof scenarios, selecting a suitable explosion-proof electric cylinder is the primary step to ensure production safety. This requires a comprehensive consideration of multiple key factors to ensure the explosion-proof electric cylinder is perfectly adapted to the actual working conditions.
First of all, it is necessary to accurately confirm the type of explosive environment.
In chemical production environments, explosion hazards are mainly divided into gas explosion environments and dust explosion environments.
For gas explosion environments—such as places where common flammable and explosive gases like methane and propane are present—it is necessary to select the corresponding gas explosion-proof electric cylinder. For dust explosion environments, such as flour mills and aluminum powder processing workshops, dust explosion-proof electric cylinders are a must-have. Only by clarifying the environment type can a correct foundation be laid for subsequent selection.
Secondly, it is crucial to confirm the explosion-proof rating of the electric cylinder according to the hazard level of the gas or dust.
Taking gases as an example:
In IIB-class gas environments where substances like propane and ethanol are commonly found, explosion-proof electric cylinders with an Exd IIB rating can be selected.
In IIC-class gas environments with more hazardous gases such as hydrogen and acetylene, explosion-proof electric cylinders with an Exd IIC rating must be used. Thanks to their higher explosion-proof rating, they can provide more reliable safety protection.
In addition, the maximum ambient temperature is also a factor that cannot be ignored, which relates to the temperature class.
Different temperature classes correspond to different surface temperature limits. For example:
A T4 temperature class indicates that the maximum surface temperature of the explosion-proof electric cylinder does not exceed 135°C, making it suitable for normal temperature environments.
A T6 temperature class corresponds to a maximum surface temperature of no more than 85°C, which is more suitable for high-temperature environments.
Finally, be sure to select products with nationally certified explosion-proof certificates. This is the authoritative certification for the explosion-proof performance of explosion-proof electric cylinders. It is prohibited to modify ordinary electric cylinders by yourself; modified products cannot guarantee explosion-proof qualification and pose huge safety risks.