公开(公告)号：US11879396B2

公开(公告)日：2024-01-23

申请号：US17992019

申请日：2022-11-22

Applicant: Raytheon Technologies Corporation

Inventor： Michael A Beinor ,  Timothy J. Castaldo ,  Christopher M. Valva ,  Nasr A. Shuaib ,  Mitchell D. Panton

IPC: F02C7/28 ,  F01D25/18 ,  F02C7/06

CPC classification number: F02C7/28 ,  F01D25/183 ,  F02C7/06 ,  F05D2220/323 ,  F05D2240/55 ,  F05D2260/232 ,  F05D2260/98

Abstract: A turbomachine has a bearing in a bearing compartment. A first seal system isolates the bearing compartment and has: a first runner; a second runner; an inner seal encircling the first runner; and an outer seal encircling the second runner. The inner seal has a static clearance with the first runner. The outer seal has a static clearance with the second runner, greater than the inner seal static clearance. The first runner has an inner portion cantilevered inward. The second runner has an outer portion cantilevered outward.

公开(公告)号：US20220403937A1

公开(公告)日：2022-12-22

申请号：US17746221

申请日：2022-05-17

Applicant: Raytheon Technologies Corporation

Inventor： Masayoshi Sonokawa ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib ,  Sean P. McCutchan

IPC: F16J15/34

Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal housing; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and a plurality of coil springs biasing the seal face against the seat face, each coil spring having a first end and a second end. The seal has a plurality of spring compartments. Each of the plurality of coil springs is partially within a respective associated compartment of the plurality of spring compartments.

公开(公告)号：US11371615B2

公开(公告)日：2022-06-28

申请号：US17190825

申请日：2021-03-03

Applicant: Raytheon Technologies Corporation

Inventor： Changsheng Guo ,  Zaffir A. Chaudhry ,  Nasr A. Shuaib

IPC: F16J15/34 ,  F16N29/04 ,  F16N29/00 ,  F01D11/00 ,  F01D21/00

Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.