Rotary valve for the control of steam throughput in a steam turbine
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United States of America Patent
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Apr 2, 2013
Grant Date -
Jul 29, 2010
app pub date -
Jul 9, 2008
filing date -
Jul 10, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary valve for the control of the steam throughput in a steam turbine is provided. The rotary valve includes an immovable fixed ring and a rotary ring which is arranged concentrically and rotatably on the fixed ring. The rotary valve is equipped with control profiles including profiled heads and profiled ends, between which control slots are formed, wherein the profiled heads are arranged on the rotary ring, and the profiled ends are arranged on the fixed ring. In the contact plane between rotary ring and fixed ring, the width of the control slot is equal to the width of the control profile. Blades are arranged between the profiled ends in the fixed ring, the blades dividing each control slot of the fixed ring into two partial slots.
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