公开(公告)号：US20180328214A1

公开(公告)日：2018-11-15

申请号：US15623208

申请日：2017-06-14

Applicant: UNiTED TECHNOLOGIES CORPORATION

Inventor： Daniel Barak ,  Joseph F. Englehart

IPC: F01D11/12 ,  F02C3/04 ,  F01D5/12 ,  F01D9/04 ,  F04D29/32 ,  F04D29/54 ,  F04D29/08

Abstract: A blade outer air seal (BOAS) assembly includes a rotor blade configured to rotate about an axis. The BOAS assembly also includes a BOAS positioned radially outward from the rotor blade and having a forward-facing BOAS face. The BOAS assembly also includes a shroud block positioned radially outward from the BOAS, having an aft-facing shroud face, and being configured to support the BOAS. The BOAS assembly also includes a first bellows seal extending from the forward-facing BOAS face to the aft-facing shroud face and configured to reduce fluid leakage radially between the BOAS and the shroud block.

公开(公告)号：US10533446B2

公开(公告)日：2020-01-14

申请号：US15623208

申请日：2017-06-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Daniel Barak ,  Joseph F. Englehart

IPC: F01D11/14 ,  F01D11/16 ,  F01D11/08 ,  F01D11/00 ,  F16J15/08

Abstract: A blade outer air seal (BOAS) assembly includes a rotor blade configured to rotate about an axis. The BOAS assembly also includes a BOAS positioned radially outward from the rotor blade and having a forward-facing BOAS face. The BOAS assembly also includes a shroud block positioned radially outward from the BOAS, having an aft-facing shroud face, and being configured to support the BOAS. The BOAS assembly also includes a first bellows seal extending from the forward-facing BOAS face to the aft-facing shroud face and configured to reduce fluid leakage radially between the BOAS and the shroud block.

公开(公告)号：US10815812B2

公开(公告)日：2020-10-27

申请号：US15920819

申请日：2018-03-14

Applicant: United Technologies Corporation

Inventor： Daniel Barak ,  Joseph F. Englehart

IPC: F01D11/16 ,  F01D25/24 ,  F01D11/08

Abstract: A blade outer air seal (BOAS) is provided. The BOAS comprising: a seal body having a forward side, an aft side opposite the forward side, a radially inward side, and a radially outward side opposite the radially inward side; and a relief gap within the seal body to allow a portion of the radially inward side to expand into the relief gap when the seal body is heated.

公开(公告)号：US20190032505A1

公开(公告)日：2019-01-31

申请号：US15920819

申请日：2018-03-14

Applicant: United Technologies Corporation

Inventor： Daniel Barak ,  Joseph F. Englehart

IPC: F01D11/16

Abstract: A blade outer air seal (BOAS) is provided. The BOAS comprising: a seal body having a forward side, an aft side opposite the forward side, a radially inward side, and a radially outward side opposite the radially inward side; and a relief gap within the seal body to allow a portion of the radially inward side to expand into the relief gap when the seal body is heated.

公开(公告)号：US20190024525A1

公开(公告)日：2019-01-24

申请号：US15841792

申请日：2017-12-14

Applicant: United Technologies Corporation

Inventor： Daniel Barak ,  Joseph F. Englehart

IPC: F01D11/08

Abstract: A disclosed gas turbine engine includes a shroud block including a mounting slot, a blade outer air seal supported within the mounting slot and a seal disposed within the mounting slot providing a seal between the blade outer air seal and the mounting slot. An anti-rotation tab is attached to the shroud block within the mounting slot for constraining movement of the seal within the mounting slot.