一、前言《闸阀静压寿命试验规程》中,对始断位置所下的定义是:在阀门关闭过程中,当闸板密封面的A点(闸板密封面外径的下边缘)到达阀体密封面的B点(阀体密封面内径的下边缘)时所处的位置(见图1)。对试验的要求,规程第11条规定为:在关紧过程和开动过程 First, the preamble, “static pressure valve life test procedures”, the starting position is defined as: in the valve closing process, when the gate sealing surface A point (gate sealing surface of the outer diameter of the lower edge) to reach the valve Body sealing surface point B (valve sealing surface of the lower edge of the inner diameter) where the position (see Figure 1). The requirements of the test, the provisions of Article 11 provides that: in the process of tight and start the process