本文介绍了核工业部一院设计部设计的压水堆核电站一回路隔离用闸阀的结构概况和填料结构特点,以及该阀门的柔性石墨填料的密封性能试验及其结果。 This article introduces the structural overview of the gate valve for isolation of pressurized water reactor nuclear power plant designed by the Design Department of the Ministry of Nuclear Industry and the characteristics of the packing structure, as well as the sealing performance test and results of the flexible graphite packing of the valve.