自动复中无油高精度电—位移转换器

RESEARCH ON AUTOMATIC OIL-FREE CENTER-RETURN ELECTRIC/MECHANICAL CONVERSION EQUIPMENT

自动复中无油高精度电—位移转换器是采用步进电机和高精度大导程滚珠丝杆副来完成电—机转换的任务 ,并用一根压缩弹簧和两个托环来执行在异常情况下供电电源消失或控制信号消失时 ,阀自动准确回到中间位置而使主配引导阀活塞复中的任务。这种装置简单巧妙地解决了主配引导阀自动高精度回复到中间位置这一难题 ,使水电厂微电机调速器的长期安全正常运行得到充分保证。

The automatic oil free center return electric/mechanical conversion equipment adopts imported stepping motor and high precision thread rolling bar to fulfill the task of electric/mechanical conversion. It uses one compressive spring and two support rings to make the main distributing leading valve return to the central position accurately in case of power failure or control signal disappearance. This equipment solves the problem of automatic center return with high precision for the main distributing leading valve, thus ensuring the security and reliability of the normal operation of the micro machine governor in hydropower stations.