公开(公告)号：US20160123172A1

公开(公告)日：2016-05-05

申请号：US14897823

申请日：2014-06-04

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Bhaskar Nanda MONDAL ,  John Joseph RAHAIM ,  Thomas MONIZ ,  Steven A. ROSS ,  Joel KIRK ,  Scott HUNTER ,  Daniel FUSINATO

IPC: F01D11/18 ,  F01D25/00 ,  F01D11/02

CPC classification number: F01D11/18 ,  F01D11/025 ,  F01D25/005 ,  F05D2240/11 ,  F05D2240/55 ,  F05D2260/30 ,  F05D2300/5021 ,  F05D2300/6033 ,  Y02T50/672

Abstract: A passive clearance control limits thermal expansion between stator components relative to rotor components. A control ring controls clearance in a passive manner and is located on or adjacent to stationary components which thermally expand during engine operation. The control ring is formed of material having low coefficient of thermal expansion such as CMCs (Ceramic Matrix Composites) and therefore limits, inhibits or restrains expansion of the adjacent stator components as temperatures increase. Limiting expansion of the stator component reduces rotor/stator clearances and limits parasitic leakage of fluid along the flowpath through the engine core.

Abstract translation: 被动间隙控制限制定子部件之间相对于转子部件的热膨胀。 控制环以被动的方式控制间隙，并且位于或邻近在发动机操作期间热膨胀的静止部件。 控制环由具有低热膨胀系数的材料（例如CMC（陶瓷基复合材料））形成，因此在温度升高时限制，抑制或抑制相邻的定子部件的膨胀。 定子组件的极限膨胀减小了转子/定子间隙，并限制了流体沿着通过发动机芯的流路的寄生泄漏。

公开(公告)号：US20240092492A1

公开(公告)日：2024-03-21

申请号：US18348649

申请日：2023-07-07

Applicant: General Electric Company

Inventor： Narayanan PAYYOOR ,  Bhaskar Nanda MONDAL ,  Arda UNSAL

IPC: B64D27/10 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36

CPC classification number: B64D27/10 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36 ,  F05D2240/60 ,  F05D2260/40 ,  F05D2260/96 ,  F05D2300/211 ,  F05D2300/2112 ,  F05D2300/2261 ,  F05D2300/6033 ,  F05D2300/614

Abstract: A turbomachine engine including a high-pressure compressor, a high-pressure turbine, a combustion chamber in flow communication with the high-pressure compressor and the high-pressure turbine, and a power turbine in flow communication with the high-pressure turbine. At least one of the high-pressure compressor, the high-pressure turbine, and the power turbine comprises a ceramic matrix composite (CMC) material. The turbomachine engine includes a low-pressure shaft coupled to the power turbine and characterized by a midshaft rating (MSR) between two hundred (ft/sec)1/2 and three hundred (ft/sec)1/2. The low-pressure shaft has a redline speed between fifty and two hundred fifty feet per second (ft/sec). The turbomachine engine is configured to operate up to the redline speed without passing through a critical speed associated with a first-order bending mode of the low-pressure shaft.

公开(公告)号：US20170009603A1

公开(公告)日：2017-01-12

申请号：US15198776

申请日：2016-06-30

Applicant: General Electric Company

Inventor： Bruce Alan CARTER ,  Ravindra Shankar GANIGER ,  Bhaskar Nanda MONDAL ,  Jacob Patrick MILLER ,  Sivakumar MAHESH ,  Kevin L. KIRKENG ,  Veeraraju VANAPALLI

IPC: F01D25/16 ,  F16C35/073 ,  F16C33/30 ,  F02C3/04 ,  F02C7/06

CPC classification number: F01D25/164 ,  F01D5/027 ,  F01D21/045 ,  F02C3/04 ,  F02C7/06 ,  F05D2220/32 ,  F05D2240/24 ,  F05D2240/52 ,  F05D2240/60 ,  F16C19/16 ,  F16C27/04 ,  F16C33/30 ,  F16C35/073 ,  F16C2360/23 ,  Y02T50/671

Abstract: In one aspect, a bearing assembly for supporting a rotor shaft relative to a support structure of a gas turbine engine may generally include a bearing including an outer race and an inner race, an outer bearing housing configured to extend radially between the outer race of the bearing and the support structure of the gas turbine engine and an inner bearing support configured to extend radially between the inner race of the bearing and the rotor shaft. In addition, the outer bearing housing and the inner bearing support each include at least one radially extending spring arm such that the outer bearing housing and the inner bearing support collectively form two springs coupled in series between the support structure and the rotor shaft.

Abstract translation: 一方面，用于相对于燃气涡轮发动机的支撑结构支撑转子轴的轴承组件通常可以包括包括外座圈和内座圈的轴承，外轴承座构造成径向延伸在外圈 轴承和燃气涡轮发动机的支撑结构以及构造成在轴承的内圈和转子轴之间径向延伸的内轴承座。 此外，外轴承座和内轴承支撑件各自包括至少一个径向延伸的弹簧臂，使得外轴承壳体和内轴承支撑件共同形成两个联接在支撑结构和转子轴之间的弹簧。