发明授权
- 专利标题: High temperature centerbody for temperature reduction by optical reflection and process for manufacturing
- 专利标题(中): 用于通过光学反射降温的高温中心体和制造工艺
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申请号: US10335647申请日: 2002-12-31
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公开(公告)号: US07181915B2公开(公告)日: 2007-02-27
- 发明人: John Frederick Ackermann , Paul V. Arszman , Bangalore A. Nagaraj , Craig D. Young , Nicole Justis
- 申请人: John Frederick Ackermann , Paul V. Arszman , Bangalore A. Nagaraj , Craig D. Young , Nicole Justis
- 申请人地址: US NY Schenectady
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: US NY Schenectady
- 代理机构: McNees Wallace & Nurick LLC
- 主分类号: F02K1/78
- IPC分类号: F02K1/78 ; B32B15/04
摘要:
A high temperature gas turbine component for use in the gas flow path that also is a specular optical reflector. A thin layer of a high temperature reflector is applied to the gas flow path of the component, that is, the surface of the component that forms a boundary for hot combustion gases. The component typically includes a thermal barrier coating overlying the high temperature metallic component that permits the component to operate at elevated temperatures. The thermal barrier coating must be polished in order to provide a surface that can suitably reflect the radiation into the gas flow path. A thin layer of the high temperature reflector the is applied over the polished thermal barrier coating by a process that can adequately adhere the reflector to the polished surface without increasing the roughness of the surface. The high temperature reflector can be applied to any surface aft of the compressor, such as on a centerbody. The surface reflects radiation back into the hot gas flow path or into the atmosphere. The reflected radiation is not focused onto any other hardware component. The design of the component is such that the radiation is returned to the gas flow path or sent to the atmosphere rather than absorbed into a component wall that only serves to increase the temperature of the wall.
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