Shaft Labyrinth Seal Clearance Effect in One and Half Steam Turbine Stage with Various Reactions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F19%3AN0000060" target="_blank" >RIV/00010669:_____/19:N0000060 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Shaft Labyrinth Seal Clearance Effect in One and Half Steam Turbine Stage with Various Reactions

Original language description

This contribution deals with an experimental study of an influence of a purge flow caused by a shaft labyrinth seal in combination with various reaction of a steam turbine stage. Effects of degree of reaction on shrouded rotor sealing flow are also discussed. The experimental work was performed in VZLU air test turbine and it belongs to a long term cooperation with Doosan Škoda Power (DSPW). The configuration of the VZLU air test turbine simulated real drum-stage geometry of DSPW. The stage was consisted of the first stator equipped with labyrinth sealing, shrouded rotor and the second stator, equipped with the labyrinth sealing as well. The first stator labyrinth sealing configuration was variable to simulate small, commonly used and extremely large clearances. There were three stage reactions tested during the investigation. The change of the reaction was reached by three different rotor geometries testing; both stators were kept the same in all cases. The influence of the clearance in the labyrinth was studied by overall measurement of the stage characteristics and also by detailed flow field measurement at the rotor and second stator outlet. Four-hole wedge pressure probes were used for the detailed time averaged measurement as well as a fast response pressure probe for an unsteady measurement.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

<a href="/en/project/TH02020086" target="_blank" >TH02020086: Influence of Seal Leakage Flows Interactions on Steam Turbine Efficiency</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

18TH CONFERENCE OF POWER SYSTEM ENGINEERING, THERMODYNAMICS AND FLUID MECHANICS

ISBN

9780735419360

ISSN

0094243X

e-ISSN

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Number of pages

11

Pages from-to

nestránkováno

Publisher name

neuveden

Place of publication

neuveden

Event location

Pilsen

Event date

Jun 11, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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