Rotor thermal stress monitoring in steam turbine

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43926576" target="_blank" >RIV/49777513:23520/15:43926576 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1742-6596/659/1/012044/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1742-6596/659/1/012044/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/659/1/012044" target="_blank" >10.1088/1742-6596/659/1/012044</a>

Result language
angličtina
Original language name
Rotor thermal stress monitoring in steam turbine
Original language description
One of the issues of steam turbines diagnostics is monitoring of rotor thermal stress that arises from nonuniform temperature field. The effort of steam turbine operator is to operate steam turbine in such conditions, that rotor thermal stress doesn’t exceed the specified limits. If rotor thermal stress limits are exceeded for a long time during machine operation, the rotor fatigue life is shortened and this may lead to unexpected machine failure. Thermal stress plays important role during turbine cold startup, when occur the most significant differences of temperatures through rotor cross section. The temperature field can’t be measured directly in the entire rotor cross section and standardly the temperature is measured by thermocouple mounted in stator part. From this reason method for numerical solution of partial differential equation of heat propagation through rotor cross section must be combined with method for calculation of temperature on rotor surface. In the first part of this article, the application of finite volume method for calculation of rotor thermal stress is described. The second part of article deals with optimal trend generation of thermal flux, that could be used for optimal machine loading.
Czech name
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Czech description
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Project
<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Journal of Physics: Conference Series, Volume 659
ISBN
—
ISSN
1742-6588
e-ISSN
—
Number of pages
11
Pages from-to
1-11
Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Plzeň, Česká Republika
Event date
Nov 19, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000368103000044

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