The invention discloses a hydrodynamic leakage drainage
system for a medium-high water head
hydropower station, which comprises a water taking module for introducing pressure water from a
water diversion pressure steel
pipe of the
hydropower station; the
water quality purification module is used for filtering impurities in the pressure water; the pressure adjusting module is used for adjusting the pressure of the pressure water; the power conversion module is used for converting hydraulic energy of the pressure water into
mechanical energy; the drainage module is used for pumping and draining accumulated water of the leakage water-collecting well by using
mechanical energy; and the monitoring control module is used for monitoring the operation state of the
system and controlling the operation of each component of the
system. The method has the beneficial effects that continuous drainage under the condition of
power loss of the whole
plant is realized by utilizing hydraulic resources of the
hydropower station, and the safety of the hydropower station is remarkably improved. And the design of multi-stage
filtration and pressure regulation is adopted, so that the accurate control on the displacement is realized. By means of the horizontal
water turbine pump, direct conversion from hydraulic energy to
mechanical energy is achieved, and the energy utilization efficiency is improved.