The calculation of stagnation point position of straight pipeline section with both movable ends and l - type pipeline section with bend at one end and bellows type expansion joint at other end is discussed 摘要探讨了两侧为活动端的直管段及一侧活动端为弯头,而另一侧活动端为波纹管补偿器的水平转角管段驻点位置的计算。