公开(公告)号：US09625101B2

公开(公告)日：2017-04-18

申请号：US14800529

申请日：2015-07-15

申请人： ROLLS-ROYCE PLC

发明人： Crispin D Bolgar ,  Michael R Hancox

IPC分类号： F17C13/00 ,  F01D25/16 ,  F01D25/18 ,  F16C33/72 ,  F02C7/06

CPC分类号： F17C13/002 ,  F01D25/16 ,  F01D25/162 ,  F01D25/18 ,  F01D25/183 ,  F02C7/06 ,  F05D2220/32 ,  F05D2240/50 ,  F05D2240/55 ,  F05D2260/605 ,  F05D2260/98 ,  F05D2270/3015 ,  F05D2270/42 ,  F16C33/726 ,  F16C2360/23

摘要： A pressure controlled chamber arrangement comprising a chamber, one or more seals arranged in use to limit fluid flow between the inside and outside of the chamber and a vent system arranged in use to remove a vent flow of fluid from the inside of the chamber. The vent system at least contributes to the formation of a pressure drop across the one or more seals from the outside to the inside of the chamber. The vent system comprises a flow controller arranged in use to control the quantity of fluid removal via the vent system in accordance with the sealing performance provided by the one or more seals, the vent system giving increased quantity of fluid removal for decreased sealing performance.

公开(公告)号：US11834958B2

公开(公告)日：2023-12-05

申请号：US17144179

申请日：2021-01-08

申请人： ROLLS-ROYCE plc

发明人： Crispin D Bolgar

IPC分类号： F01D5/06 ,  F01D11/00 ,  F01D5/08

CPC分类号： F01D5/066 ,  F01D5/087 ,  F01D11/001 ,  F01D11/003

摘要： The present disclosure relates to a rotor assembly for a gas turbine engine, the rotor assembly comprising a first rotor stage having a first disc portion with a peripheral first rim portion and a second rotor stage, the second rotor stage having a second disc portion with a peripheral second rim portion. The second rotor stage is axially adjacent and downstream of the first rotor stage and the second rim portion has an axial extension extending towards the first rim portion such that the axial extension of the second rim portion defines a rotor drum cavity between the first and second disc portions. The second rotor stage further comprises a drive arm extending within the drum cavity to the first disc portion, the drive arm being connected to the first disc portion by at least one connector. The drive arm divides the drum cavity into radially outer rim cavity portion and a radially inner main cavity portion. The rotor assembly further comprises a rim seal located between the axial extension of the second rim portion and the first rim portion, and a pressure equalisation path extending from the rim cavity portion to the main cavity portion.