水轮机电子管型的电液调速器(电调)在运行中,当开度限制锁定投入后,又遇机组甩负荷时,为防止机组飞逸而使电调自动将导叶关至空载开度的回路,称为导至空载开度回路,简称导空回路。本文介绍一种不用反馈送讯器(旋转变压器)的电调导空回路,它与目前通常所采用的电气回路相比,具有结构简单、工作可靠、调整方便等优点。 Turbine electron tube-type electro-hydraulic governor (ESC) in operation, when the opening limit lock into, met the unit load rejection, in order to prevent the unit fleet and make the ESC automatically turn the vane to open Degree of the loop, known as leading to the no-load opening circuit, referred to as the air conduction loop. This paper introduces an electric feedback loop without feedback transmitter (resolver), which has the advantages of simple structure, reliable operation, easy adjustment compared with the current commonly used electrical circuit.