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EP0128343A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Double casing turbine with at least one valve for the horizontal supply of steam

Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1984-05-05
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Granted: —
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Expires: 2004-05-05
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Abstract

Abstract Translated from German Das für den direkten Anschluß an das Außengehäuse (20) einer zweigehäusigen Dampfturbine (14) bestimmte Ventil (15) hat einen im Ventilgehäuse (17) sitzenden Diffusor (18), der durch das Außengehäuse (20) bis in einen Anschlußstutzen (32) des Innengehäuses (23) hineinragt, wo er dichtend nachgiebig an das Innengehäuse (23) angeschlossen ist. Der Diffusor (18) sitzt bei einer bevorzugten Ausführungsform mit einem zylindrischen Absatz (29) in einer entsprechenden Bohrung des Ventilgehäuses (17), wobei das Ventilgehäuse (17) aus Ferritguß und der Diffusor (18) aus austenitischem Stahl besteht, dessen Wärmedehnzahl größer ist als jene des Ventilgehäusematerials. Der im kalten Zustand locker sitzende Diffusor (18) dehnt sich bei Erwärmung der Turbine stärker aus als das Ventilgehäuse (17), so daß der Diffusor dann im Ventilgehäuse festsitzt. The valve (15) intended for direct connection to the outer casing (20) of a two-casing steam turbine (14) has a diffuser (18) seated in the valve casing (17) which passes through the outer casing (20) into a connection piece (32) of the Inner housing (23) protrudes where it is sealingly connected to the inner housing (23). In a preferred embodiment, the diffuser (18) is seated with a cylindrical shoulder (29) in a corresponding bore of the valve housing (17), the valve housing (17) being made of cast ferrite and the diffuser (18) made of austenitic steel, the thermal expansion coefficient of which is greater than that of the valve body material. The diffuser (18), which sits loosely in the cold state, expands more when the turbine is heated than the valve housing (17), so that the diffuser is then stuck in the valve housing.

Inventors

  • 👤 Peter Heiniger
  • 👤 Jaroslav Masek
  • 👤 Herbert Senn

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 18:12
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; F01D25/00; F01D25/24; F01D25/26; F01D9/00; F01D9/06

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

FR1474475A Cited
DE943052C Cited
DE1042606B Cited
GB813330A Cited
CH389646A Cited
US3190612A Cited

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