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一、前言蓄能式和常规水电站的流道建筑物,存在各种水力学问题。如蓄能水电站中,为保持流道建筑物正、逆流两用的机能,发电时放水口栅网也是抽水时的进水口栅网。因高速水流使栅网背后产生涡流,致使栅网经受振动使其材料产生疲劳破坏。又如将闸门室竖井兼作调压井使用时,启闭闸门用的启闭设备和它的支承梁在抽水过程突然中断时闸门会受到很大的扬压力,上浮后又下落发生损伤的事例也不少。因此,在设计时。必须充分研究导致水流流态发生变化的原因。本文概要介绍某蓄能水电站实测尾水闸门的振动情况和采取的对策,作为今后设计的参考。
I. INTRODUCTION There are various hydraulics problems in runner structures of energy storage and conventional hydropower stations. Such as the storage of hydropower stations, in order to maintain the flow of buildings positive and negative dual-purpose function, the power generation when the water inlet grille is pumping water inlet grille. Due to the high-speed flow of the grid behind the eddy current, resulting in vibration of the grid to make its material fatigue damage. Another example is the use of the gate chamber doubles as a surge tank, opening and closing gate with the opening and closing equipment and its support beam sudden interruption of the pumping process when the gate will be a great uplift pressure, falling and then the occurrence of damage cases also A lot. So at design time. The reasons for the changes in water flow patterns must be fully studied. This article gives an overview of the actual measured tidal sluice gate vibration situation and countermeasures taken for a storage power station, as a reference for future design.