【摘要】 本文提出了当发生间接水击时计算穿井压力的方法。研究了调压井直径、阻抗孔口等因素对穿井压力的影响,以及考虑压力钢管——隧洞——调压井连接处压力随时间变化的边界条件计算钢管中的水击压力。文中还提出最优阻抗孔口确定的方法。对于已给参数的任意电站,都可以找到其最优阻抗孔口。为了较好的设计,调压井阻抗孔口的直径应按本文的方法选用最优阻抗孔口直径。更多还原

【Abstract】 A Method to compute the transmission pressure has been devised for the case of slow closure. The influence of surge chamber diameter, throttled orifice and other factors on transmission pressure has been studied. By considering the time-dependent pressure at the junction of penstock, tunnel and surege chamber as a boundary condition, water-hammer pressure inside the penstock can be determined. A method to determine the size of optimum throttled orifice is also presented in this paper.Whereby the optimum orifice can be found for any given hydropower station. For the better design, it is recommended the orifice size of throttled surge chambers be chosen as determined in this paper.更多还原