STEAM TURBINE CONTROL VALVE STRUCTURE

The invention provides novel valve structure for controlling the supply of hot pressurized steam to a steam turbine with a minimum of noise and vibration, especially in the partially open position where a large degree of throttling is attained. Tubular structure having a large number of perforations...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JOSEPH D. CONRAD JR, EDWIN G. NOYES JR, ROBERT O. BROWN
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS 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 MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENTTYPE, e.g. STEAM ENGINES MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TAPS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides novel valve structure for controlling the supply of hot pressurized steam to a steam turbine with a minimum of noise and vibration, especially in the partially open position where a large degree of throttling is attained. Tubular structure having a large number of perforations that are progressively uncovered as the valve plug is moved in opening direction is provided, thereby imposing a large number of small throttlings in the steam flow (instead of the usual single large throttling) with attendant reduction in noise and vibration level over the entire operating range of the valve.