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公开(公告)号：EP3693554A1
公开(公告)日：2020-08-12
申请号：EP20155467.2
申请日：2020-02-04
IPC分类号： F01D11/00
摘要： A seal seat (72) includes an annular body (74) and an extension. The annular body (74) is disposed about a centerline axis (C A ). The extension is connected to and extends radially outward from the annular body (74). The extension includes first, second, and third portions (80, 90, 94). The first portion (80) is connected to the annular body (74) and is defined by axially opposed upstream and downstream wall faces (82, 88). The first portion (80) includes a fin (84) connected to the upstream wall face (82). The second portion (90) is connected to the first portion (80) and extends substantially parallel to the annular body (74). The third portion (94) is connected to the second portion (90) and extends substantially parallel to the second portion (90). To cool the seal seat, a fluid coolant is delivered to the first portion of the seal seat, a film of the fluid coolant is formed on the upstream wall face, the film of the fluid coolant flows radially outward across the upstream wall face and across the fin, and thermal energy is transferred from the first portion to the film of the fluid coolant via the fin.
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公开(公告)号：EP3680454A1
公开(公告)日：2020-07-15
申请号：EP20150805.8
申请日：2020-01-08
摘要： A gas turbine engine includes a buffer manifold (244) in an intershaft region (240). The buffer manifold (244) is configured to direct a flow of air (266) between a first air seal (230b) and a first oil seal (234c), and to direct another flow of air (268) between a second air seal (230c) and a second oil seal (234c).
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公开(公告)号：EP3591193A1
公开(公告)日：2020-01-08
申请号：EP19184263.2
申请日：2019-07-03
摘要： A gas turbine engine (20) includes a first tap (72) connected to a compressor section (24) to deliver air at a first pressure. A heat exchanger (78) is downstream of the first tap (72). A cooling air valve (106a, 106b) selectively blocks flow of cooling air across the heat exchanger (78). A cooling compressor (84) is downstream of the heat exchanger (78) and pressurizes the air from the first tap (72) to a greater second pressure. A shut off valve (82) selectively stops flow of the air between the heat exchanger (78) and the cooling compressor (84). A controller (104) controls the cooling air valve (106a, 106b), the shut off valve (82), and the cooling compressor (84) such that the flow of the air is stopped between the heat exchanger (78) and the cooling compressor (84) only after the controller (104) has stopped the cooling compressor (84). A monitoring system (112) communicates with the controller (112) and includes a pressure sensor (112a) and a temperature sensor (112b) downstream of the cooling compressor (84).
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