About: Pulsating flows in the inlet of a nuclear steam turbine

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	High-frequency pulsation of the steam flow and vibration of piping system was discovered during test period of 1000 MW ŠKODA turbine operating with inlet-saturated steam in nuclear power plant Temelín. Control valves and piping system radiated high-powe r noise. The only possible way of pulsating flows reduction was to change the geometry of inner channels of control valves. Several variants of valve channel geometry were tested. Main attention was given to the variant with flat-bottom-plug and perfor ated ring called “muffler”. The new designs are compared in the paper with the original one by field turbine measurements, by numerical simulations and by model experiments. Mach number and velocity distribution in valve channels and diffuse r and also pressure pulsation characteristics of steam flow in inlet pipes are described for the wide range of turbine-output. High-frequency pulsation of the steam flow and vibration of piping system was discovered during test period of 1000 MW ŠKODA turbine operating with inlet-saturated steam in nuclear power plant Temelín. Control valves and piping system radiated high-powe r noise. The only possible way of pulsating flows reduction was to change the geometry of inner channels of control valves. Several variants of valve channel geometry were tested. Main attention was given to the variant with flat-bottom-plug and perfor ated ring called “muffler”. The new designs are compared in the paper with the original one by field turbine measurements, by numerical simulations and by model experiments. Mach number and velocity distribution in valve channels and diffuse r and also pressure pulsation characteristics of steam flow in inlet pipes are described for the wide range of turbine-output. (en)
Title	Pulsating flows in the inlet of a nuclear steam turbine Pulsating flows in the inlet of a nuclear steam turbine (en)
skos:prefLabel	Pulsating flows in the inlet of a nuclear steam turbine Pulsating flows in the inlet of a nuclear steam turbine (en)
skos:notation	RIV/49777513:23640/03:00000060!RIV/2004/MSM/236404/N
http://linked.open.../vavai/riv/strany	677-686
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(LN00B084)
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Šťastný, Miroslav Tajč, Ladislav Matas, Richard
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Nové technologie - výzkumné centrum
http://linked.open...dnocenehoVysledku	624268
http://linked.open...ai/riv/idVysledku	RIV/49777513:23640/03:00000060
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	steam turbine;high-frequency vibrations;transonic flow;valve channel (en)
http://linked.open.../riv/klicoveSlovo	transonic flow steam turbine valve channel high-frequency vibrations
http://linked.open...ontrolniKodProRIV	[EDA6F8F161C4]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	5th European Conference on Turbomachinery
http://linked.open...in/vavai/riv/obor	JF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Research Centre for New Technologies in the Region of West Bohemia
http://linked.open...UplatneniVysledku	2003
http://linked.open...iv/tvurceVysledku	Kolář, Petr Matas, Richard Šťastný, Miroslav Bednář, Lukáš Tajč, Ladislav Martinů, Petr
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2003-01-01 (xsd:date)
number of pages	10 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Asociace českých strojních inženýrů
http://localhost/t...ganizacniJednotka	23640

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