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公开(公告)号：US20190383304A1
公开(公告)日：2019-12-19
申请号：US16007647
申请日：2018-06-13
发明人： Grace Aker , Michael Nesteroff , Mark Eric Whitlock , Cassandra Cummings , Jonathan Acker , Younes Khamliche , Nathanael Cooper
摘要： A centrifugal impeller shroud assembly has a dynamically moveable impeller shroud for encasing a rotatable centrifugal impeller and resolving misalignment between the impeller shroud and the rotatable centrifugal impeller. The assembly comprises a static casing, an impeller shroud, a shroud arm, and a thermal member. The shroud arm is coupled between the casing and the impeller shroud. The thermal member is coupled to the impeller shroud and has a coefficient of thermal expansion (CTE) lower than the CTE of the shroud. The shroud arm comprises a flexible portion configured to flex responsive to a differential pressure across the shroud arm.
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公开(公告)号：US10704560B2
公开(公告)日：2020-07-07
申请号：US16007647
申请日：2018-06-13
发明人： Grace Aker , Michael Nesteroff , Mark Eric Whitlock , Cassandra Cummings , Jonathan Acker , Younes Khamliche , Nathanael Cooper
IPC分类号： F04D29/16 , F04D29/02 , F04D29/42 , F01D11/20 , F01D11/08 , F04D29/62 , F01D11/24 , F01D11/16 , F01D11/18 , F01D11/22
摘要： A centrifugal impeller shroud assembly has a dynamically moveable impeller shroud for encasing a rotatable centrifugal impeller and resolving misalignment between the impeller shroud and the rotatable centrifugal impeller. The assembly comprises a static casing, an impeller shroud, a shroud arm, and a thermal member. The shroud arm is coupled between the casing and the impeller shroud. The thermal member is coupled to the impeller shroud and has a coefficient of thermal expansion (CTE) lower than the CTE of the shroud. The shroud arm comprises a flexible portion configured to flex responsive to a differential pressure across the shroud arm.
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公开(公告)号：US10962024B2
公开(公告)日：2021-03-30
申请号：US16452698
申请日：2019-06-26
摘要： A compressor shroud assembly is disclosed comprising a dynamically moveable impeller shroud, a static compressor casing, an air piston mounted between said impeller shroud and said compressor casing, and a clearance control system. The air piston effects axial movement of said impeller shroud responsive to a supply of actuating air. The clearance control system regulates the pressure of actuating air in said air piston and comprises a supply conduit having a supply modulating valve and a discharge conduit having a blowoff check valve. The blowoff check valve is set to open at a predetermined differential pressure between pressure of the air piston and pressure of the supply of actuating air.
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