Repair principle of impeller of hydraulic turbine

Sediment erosion is one of the important problems that affect the safe operation of hydropower plants. There are a lot of sand mud turbine on the river, often wear and cavitation (formerly called cavitation) exist at the same time (also exist alone), and promote each other, damage superposition, greatly accelerated the failure process of hydraulic turbine parts of metal surface, the abrasion and cavitation effect of combined, usually called erosion damage. The laboratory simulation experiment and field observation of hydropower station show signs of damage, wear or abrasion damage than pure pure cavitation is much more serious.

Water turbine blade wear photos

How to solve more efficient turbine impeller cavitation wear erosion problem has been research hotspot, related research field in recent years, with foreign technology applications and efforts to broaden the investment and more domestic research institutions have made great achievements in this.