| Issue |
MATEC Web Conf.
Volume 383, 2023
22nd Conference on Power System Engineering
|
|
|---|---|---|
| Article Number | 00010 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/matecconf/202338300010 | |
| Published online | 20 October 2023 | |
Cooling of Steam Turbine Exhaust Hood and Last Stage Blade
1 Doosan Škoda Power, Experimental Research, 30128, Tylova 1/57, Plzeň, Czech Republic
2 University of West Bohemia, Department of Power System Engineering, 30100, Univerzitní 8, Plzeň, Czech Republic
* Corresponding author: michal.hoznedl@doosan.com
This paper describes a novel semi-numerical method of water droplets path lines calculation in steam turbine axial exhaust hood 2D space. The axial velocity profile of steam as well as droplets evaporation are taken into account. Water droplets occur in several cooling nozzles placed on the outer wall of axial exhaust hood. Mathematical model of all water nozzles used in Doosan Škoda steam turbines was developed. Position and angle of cooling nozzles towards the outer exhaust hood wall influence the possibility of last stage blade trailing edges erosion given by droplets flow from the nozzles. The turbine lifetime is prolonged as the final consequence.
© The Authors, published by EDP Sciences, 2023
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