防爆电气设备超前开盖断电及滞后闭锁

Cutting off Electricity Automatically of Leading Cover Opening with Lagging Lockout for Flameproof Electrical Apparatus

摘要: 分析比较了分级闭锁技术以及两防锁技术在防止工人带电开盖、开盖信息传输以及开盖断电的原理和适用范围。提出1种基于动力载波传输带电开盖信息,并实现超前开盖断电以及滞后闭锁的方法。这种方法可防止工人擅自开盖,防止因带电开盖造成的电火引爆瓦斯事故。

Abstract: Compared the theory and applicability of grading lockout and swith lock with two precautions technology in preventing opening cover,digital inputs transmission,a method of ante-disconnection caused by opening cover and lagging lockout for flameproof electrical apparatus was suggested.The method is superiority in simple and safe.The goal is preventing opening cover when powering and thus causing gas explosion by electrical spark.