一般认为,水电站(或泵站)引水钢管振动的原因有两个,一是由于机组运转不平衡产生扰动水压波,当其频率与钢管结构的自振频率相接近时产生共振(水压波频率等于机组转 It is generally believed that there are two reasons for the vibration of the water-carrying steel pipe of a hydropower station (or a pumping station). One is that the disturbed hydrodynamic wave is generated due to the unbalanced operation of the generating unit and resonates when its frequency is close to the natural frequency of the steel pipe structure The frequency is equal to the unit turn