作　　者： ; ;

机构地区： 韶关学院物理与机电工程学院

出　　处： 《真空》 2012年第4期92-94,共3页

摘　　要： 基于PLC或＂PLC＋上位机＂电力变压器变压法真空干燥状态监控系统,硬件系统相对复杂,需要A/D转换和人机界面组态。监控系统改用＂PLC＋无纸记录仪＂,硬件系统大大简化,无需计算机、A/D转换和人机界面组态;在干燥系统罗茨泵的两端并联一旁路阀,降低了罗茨泵的故障率,干燥周期缩短10%~30%,能耗降低1O%~25%,综合生产能力提高15%~25%。 Generally,a monitoring system for transformer’s vacuum drying system in variable-pressure method is mainly made up of PLC or ＂PLC ＋ upper computer ＂.Its hardware system is relatively complex which needs A/D digital converter and human-computer interface configuration.A bypass valve is paralleled at both ends of Roots pump in the drying system.＂PLC ＋ Paperless Recorder ＂is applied in monitoring system.The practical application shows that the hardware system is greatly simplified,which does not need a computer,A/D digital converter or human-computer interface configuration,the failure rate of Roots pump is reduced,the drying cycle is shortened by 10%~30%,the energy consumption is reduced by 10%~25%,and the comprehensive production capacity is improved by 15%~25%.

关 键 词： 真空干燥 电力变压器 无纸记录仪 变压法 状态监控

领　　域： [一般工业技术] [自动化与计算机技术] [自动化与计算机技术]