发明名称 |
Systems and methods for changing a speed of a compressor boost stage in a gas turbine |
摘要 |
Systems and methods for changing a speed ratio between a compressor boost stage (12) and at least one power turbine (16) of a gas turbine engine (10) are described. Such a system may comprise a coupling device (20) configured to selectively transmit energy from the at least one power turbine (16) to the boost stage (12) according to at least a first speed ratio and a second speed ratio. The system may also comprise an auxiliary power device (22, 26) configured to cause a rotational speed of the boost stage (12) to change from a first speed corresponding substantially to the first speed ratio to a second speed corresponding substantially to the second speed ratio when the boost stage (12) is decoupled from the at least one power turbine (16). |
申请公布号 |
US9328667(B2) |
申请公布日期 |
2016.05.03 |
申请号 |
US201514744323 |
申请日期 |
2015.06.19 |
申请人 |
PRATT & WHITNEY CANADA CORP. |
发明人 |
MacFarlane Ian A. |
分类号 |
F02C1/06;F02C7/36;F23R3/26 |
主分类号 |
F02C1/06 |
代理机构 |
Norton Rose Fulbright Canada, LLP |
代理人 |
Norton Rose Fulbright Canada, LLP |
主权项 |
1. A method for changing a rotational speed of a compressor boost stage driven by at least one power turbine of a gas turbine engine relative to a speed of the at least one power turbine, the method comprising:
driving the boost stage at a first rotational speed corresponding to a first speed ratio between the boost stage and the at least one power turbine via coupling between the boost stage and the at least one power turbine; decoupling the boost stage from the at least one power turbine; changing the rotational speed of the boost stage from the first rotational speed to a second rotational speed substantially corresponding to a second speed ratio between the boost stage and the at least one power turbine; re-coupling the boost stage to the at least one power turbine at the second speed ratio; and driving the boost stage at the second rotational speed via coupling between the boost stage and the at least one power turbine. |
地址 |
Longueuil CA |