About the Influence of Turbine Blade Grid Geometry on the Wet Steam Flow in Turbine Stages

摘要

The wet steam flow in turbine stages leads to efficiency losses and to the danger of erosion of rotor blades. Both phenomena are closely connected with the deposition of water droplets on turbine blading. As a result of analytical investigations of the motion of water droplets in turbine cascades, it has been shown that the quantity of deposited water is influenced by the blade geometry. Experimental investigations on the deposition of water on fixed blades in turbine cascades have been carried out with natural LP wet steam. The experimental results confirmed the dependence of the deposition rate on the blade geometry.