矿用防爆变频器多重化安全连锁保护系统设计

摘要

防爆技术领域公开的防爆变频器的多重化安全连锁保护系统及方法,具有的多重化安全连锁保护系统,它包括双快开门安全闭锁机构、多重化安全连锁保护电路.双快开门防爆变频器箱体的箱门上设置有双快开门安全闭锁机构,双快开门安全闭锁机构设置的转换开关与多重化安全连锁保护电路相连;多重化安全连锁保护电路由充放电安全闭锁电路、漏电检测安全闭锁电路、多路PWM故障闭锁电路、无源交直流带电显示电路和常规继电器安全保护电路构成;该系统能够实现复杂而又准确的预保护,安全系数高、保护可靠且升级便利.具有系统总成化、插拔式结构组合化等原则,及无源在线式实时检测、安全报警、体容比小及性能好等特点.%The public multiple security interlock protection system and method for the mine-used explosion-proof frequency inverter in explosion-proof technology field involves multiple security interlock protection system,which includes double quick-opening security interlock mechanism and multiple security interlock protection circuit.The double quick-opening explosion-proof frequency inverter was equipped with double quick-opening security interlock mechanism whose switch was connected with multiple security interlock protection circuit.The multiple security interlock protection circuit consisted of charge and discharge security interlock circuit,leakage detection security interlock circuit,multiple PWM fault interlock circuit,passive AC/DC electrified display circuit and conventional relay security protection circuit.The system realized complicated and accurate pre-protection with high security coefficient,reliable protection and convenient upgrading.The system was characterized by integration,plug-in combination,passive online detection,security alarm,small volume ratio and excellent performance.