- 专利标题: Control of rotor stress within turbomachine during startup operation
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申请号: US17032645申请日: 2020-09-25
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公开(公告)号: US11428115B2公开(公告)日: 2022-08-30
- 发明人: Austin Daniel Frazer , Dean Alexander Baker , Steven Di Palma , Carl Raymond Toth , Bruce Frederick Nagel
- 申请人: General Electric Company
- 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: Hoffman Warnick LLC
- 代理商 James Pemrick; Charlotte Wilson
- 主分类号: F01D19/02
- IPC分类号: F01D19/02 ; F01K13/02 ; F01K23/10
摘要:
Embodiments of the disclosure provide a method for controlling steam pressure within a turbine component. The method includes calculating a predicted stress on a rotor of the turbine component based on a predicted steam flow with the inlet valve in a minimum load position, a rotor surface temperature, and an inlet steam temperature, and determining whether the predicted stress exceeds a threshold. If the predicted stress exceeds the threshold, the inlet valve adjusts to a warming position. When steam in the discharge passage reaches a target pressure, the exhaust valve partially closes while maintaining the warming position of the inlet valve. If a safety parameter of the turbine component violates a boundary, the exhaust valve partially opens while maintaining the warming position of the inlet valve. When the predicted stress does not exceed the threshold, the inlet valve opens to at least the minimum load position.