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鉴于在输水管道上移动调压室位置可使涌浪压力与水锤压力彼此相互消长,当两者相等即对应了调压室最佳位置。以原输水洞径不变对应的最佳位置为前提,采用电站水力过渡过程的数学模型,模拟研究了引水隧洞及压力管道直径的改变对调压室最佳位置的影响。结果表明,随着引水隧洞直径的减小,调压室需左移远离厂房以恢复到最佳位置,且移动前后蜗壳末端压力差值呈增长趋势,但变幅较小;而随着压力管道直径的减小,调压室需右移靠近厂房以恢复平衡,且压力差值较前者更为明显。
In view of the fact that the pressure of the surge and the pressure of the water hammer can be canceled each other by moving the position of the surge chamber on the water conveyance pipe, when the two are equal, the optimal position of the surge chamber is corresponded. Based on the premise that the original water transfer hole diameter is constant, the mathematical model of hydropower transition process is used to simulate the influence of the diameter of diversion tunnel and pressure pipe on the optimal position of surge chamber. The results show that as the diameter of the diversion tunnel decreases, the pressure chamber needs to be moved to the left from the plant to return to the optimal position, and the pressure difference between the end of the volute and the end of the volute shows an increasing trend, The decrease of pipe diameter, the surge chamber should be moved to the right of the plant to restore balance, and the pressure difference is more obvious than the former.