Pulsating flows in the inlet of a nuclear steam turbine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F03%3A00000060" target="_blank" >RIV/49777513:23640/03:00000060 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pulsating flows in the inlet of a nuclear steam turbine

Popis výsledku v původním jazyce

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-power 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 &#8220;muffler&#8221;. 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 rand also pressure pulsation characteristics of steam flow in inlet pipes are described for the wide range of turbine-output.

Název v anglickém jazyce

Pulsating flows in the inlet of a nuclear steam turbine

Popis výsledku anglicky

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-power 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 &#8220;muffler&#8221;. 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 rand also pressure pulsation characteristics of steam flow in inlet pipes are described for the wide range of turbine-output.

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

<a href="/cs/project/LN00B084" target="_blank" >LN00B084: Nové technologie Výzkumné centrum v Západočeském regionu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

5th European Conference on Turbomachinery

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

677-686

Název nakladatele

Asociace českých strojních inženýrů

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

1. 1. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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