A METHOD TO ENHANCE OPERATION EFFICIENCY OF WATER TURBINES AND TO REDUCE CAVITATION OF COMPONENTS THEREOF

摘要

A method to dispose at least one air guiding tube between a penstock anda water turbine installed on a dam to form negative pressure at an outlet oftheair guiding device by the water kinetic energy produced from high speed ofwater flow to take in external air for pressurizing, so as to produce aplurality ofpressured air bubbles mixed into the water. The water with pressured airbubbles would be decompressed when flowing to an exit of the penstock andhas their volumes increased, so as to enhance the water kinetic energy fordriving the water turbine more efficiently; meanwhile the method can preventfrom production of cavities and further avoid damages of the components of thewater turbine from cavitation.