SEAL PRIMARILY FOR A TURBINE

A pressure seal is provided as an alternative to the normal gland or labyrinth seal between two relatively rotatable members 10, 11. In this seal an annular jet of seal fluid is directed from a first duct 15 defined in one of the members 10, 11 towards the other member so as to form a moving curtain...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ARNOLD BAINBRIDGE, ROBERT GEORGE UNSWORTH
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS WEAPONS
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Beschreibung
Zusammenfassung:	A pressure seal is provided as an alternative to the normal gland or labyrinth seal between two relatively rotatable members 10, 11. In this seal an annular jet of seal fluid is directed from a first duct 15 defined in one of the members 10, 11 towards the other member so as to form a moving curtain of seal fluid therebetween, and means 19 is provided for forming an annular mass of seal fluid on the higher pressure side of the moving curtain whereby to prevent entrainment of fluid from the region 12 which adjoins the higher pressure side into the moving curtain and thence into the region 13 adjoining the lower pressure side. A second duct 20 may be defined within the one member 11 for the purpose of forming a further moving curtain of seal fluid between the annular mass and the higher pressure region 12. The second duct 18 may be fed from the same pressure source as the first, suitable throttling means 21 being interposed between the two.