水轮机调速器液压控制型主配压阀的自动复中

根据国内水电站的运行要求和习惯，大型水轮发电机组的调速器在失去电源时，一般要求其主配压阀自动保持在中间平衡位置，从而使接力器保持在原来的位置。文中提出并实现了一种具有自动复中功能的液压控制型主配压阀的机械液压系统，在电站中已得到成功的应用。

Automatic Return to Zero Position of the Hydraulic Control Main Distributing Valve of Hydro-turbine Governor

According to the operation request and habit of hydropower stations in China, when the governor of a large water turbo-generator set loses power supply, the main distributing valve must automatically return to the zero position so that the servomotor can keep the opening degree. Proposed in this paper is a new hydraulic system of hydraulic control main distributing valve with the function of automatic return to the zero position, which has been successfully applied to hydropower stations.