Wenderoth, Lind & Ponack, L.L.P.
Seal structure for rotary machine
A seal structure partitions a high-pressure portion and a low-pressure portion including spring-back seal rings on the high-pressure side, including ACC seal rings and fins on the low-pressure side. The ACC seal rings have an adjustable movable seal ring which is a movable seal ring that is movable in a substantially radial direction at a portion thereof and which partitions a high-pressure side steam chamber and a medium-pressure side steam chamber with the fins and a circumferential surface, and including a pressure equalizing pipe that connects the low-pressure side of the adjustable movable seal ring to a high-pressure outlet portion, is provided with an adjusting pipe that connects, on the high-pressure side steam chamber side of the ACC seal rings, a high-pressure dummy to the same high-pressure outlet portion as the medium-pressure side steam chamber, and an open/close valve in the adjusting pipe.
MITSUBISHI HEAVY INDUSTRIES, LTD.
F F F F
F05D F01D F01D F16J
additional inventional inventional inventional
Hidekazu Shin Takashi
Uehara Nishimoto Nakano