公开(公告)号：US20230407757A1

公开(公告)日：2023-12-21

申请号：US17843113

申请日：2022-06-17

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Dean Johnson ,  Thomas E. Clark

IPC: F01D11/12 ,  F01D11/24

CPC classification number: F01D11/125 ,  F05D2240/55 ,  F05D2300/6033 ,  F01D11/24

Abstract: A seal system for a gas turbine engine includes a ceramic matrix composite (CMC) seal arc segment and a carrier supporting the CMC seal arc segment. The CMC seal arc segment defines radially inner and outer sides and has an abradable layer disposed on the radially outer side. There is a cooling cavity radially between the carrier and the abradable layer. The carrier includes a ridge that projects into a groove in the abradable layer and provides a labyrinth seal that partitions the cooling cavity into sub-cavities.

公开(公告)号：US11913340B2

公开(公告)日：2024-02-27

申请号：US17843113

申请日：2022-06-17

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Dean Johnson ,  Thomas E. Clark

IPC: F01D11/12 ,  F01D11/00 ,  F01D11/02 ,  F01D11/24 ,  F01D25/00 ,  F01D25/12

CPC classification number: F01D11/125 ,  F01D11/005 ,  F01D11/02 ,  F01D11/24 ,  F01D25/12 ,  F01D25/005 ,  F05D2240/11 ,  F05D2240/55 ,  F05D2300/6033

Abstract: A seal system for a gas turbine engine includes a ceramic matrix composite (CMC) seal arc segment and a carrier supporting the CMC seal arc segment. The CMC seal arc segment defines radially inner and outer sides and has an abradable layer disposed on the radially outer side. There is a cooling cavity radially between the carrier and the abradable layer. The carrier includes a ridge that projects into a groove in the abradable layer and provides a labyrinth seal that partitions the cooling cavity into sub-cavities.