Analyzing the on/off characters of the normal flat brake valve in service environment,and one new type of sealed structure,Which is used in the different condition tube,such as horizontal,Vertical,incline and christmas tree etc,will be introduced.

• 分析了普通平板闸阀在使用工况中的启闭特性,介绍了一种适用于水平、垂直、倾斜、采油树的等不同状态管路中的新型平板闸阀的密封结构。