Separation of water film from last stage guide blades of 1000 MW steam turbine

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49193864%3A_____%2F19%3AN0000005" target="_blank" >RIV/49193864:_____/19:N0000005 - isvavai.cz</a>
Result on the web
<a href="https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2019/58714/V008T29A006/1067205" target="_blank" >https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2019/58714/V008T29A006/1067205</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/GT2019-90221" target="_blank" >10.1115/GT2019-90221</a>

Result language
angličtina
Original language name
Separation of water film from last stage guide blades of 1000 MW steam turbine
Original language description
The paper deals with experimental research of water and steam flow through the grooves in hollow stator blades of the steam turbine last stages with the support of CFD calculations. Also the amount of water sucked by the circumferential groove in the upper limiting wall between the last stage rotor and stator blade was experimentally measured. Measuring took place on a steam turbine with nominal output 1000 MW. With gradual increase of the turbine output it was possible to measure parameters of hollow blades suction for outputs 205, 460, 730, 870 and also 1006 MW. The results of experimental measurements provide very important information about the whole suction tract behaviour and its ability to remove liquid water films from the stator blades surface. As very good qualities of the suction tract were confirmed by the measurement, it could be stated that hollow stator blades combined with the circumferential groove on the upper limiting wall is still a suitable technical solution for lowering erosion loading of the last stages. When using a properly dimensioned and correctly working suction system, erosion loading of LSB leading edges on the tip can be lowered by almost a half.
Czech name
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Czech description
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Project
<a href="/en/project/TK01020029" target="_blank" >TK01020029: Efficiency Increasing of Turbine Wet Steam Last Stages</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition
ISBN
978-0-7918-5871-4
ISSN
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e-ISSN
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Number of pages
11
Pages from-to
GT2019-90221
Publisher name
ASME Turbo Expo
Place of publication
Phoenix, Arizona, USA
Event location
Phoenix, Arizona, USA
Event date
Jan 1, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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