防爆电动执行器的型式及原理

防爆电动执行器的型式及原理

Explosion-proof Type and Principle of Explosion-proof Electric Actuators

 电动执行器被使用在十分恶劣的、往往有很多易燃易爆气体混合物的工作环境中，因此对电动执行器的防爆功能有着很高的要求，这样才能保证电动执行器使用的安全性和有效性。本文以中英合资天蝶阀门生产的防爆型电动执行器为例，分析如何进行智能型电动执行器的防爆结构设计。

 Electric actuators are used in very harsh working conditions,often with a lot of flammable and explosive gas mixture,therefore, the explosion-proof function of the electric actuator is highly required, so as to ensure the safety and effectiveness of the electric actuator.Taking the explosion-proof electric actuator produced by the Sino-British joint venture Tandy Valve as an example, this paper analyzes how to design the explosion-proof structure of the electric actuator.

 1、隔爆型电动执行器d

 1. Flameproof electric actuator “ d “

 一种具有隔爆外壳的电动执行器。隔爆外壳能承受已进入外壳内部的可燃性混合物内部爆炸而不损坏，并且通过外壳上的任何接合面或结构孔不会引燃一种或多种气体或蒸气所形成的外部爆炸性环境的电动执行器外壳。

 An electric actuator with a flameproof enclosure. The flameproof enclosure can withstand an explosion inside a combustible mixture that has entered the outer shell without damaging it bad, and does not ignite the external explosion of one or more gases or vapors through any joint or structural holes on the housing electric actuator housing for the environment.

 2、增安型电动执行器e