发明名称 |
Wind turbine pitch control hub |
摘要 |
In a variable pitch wind turbine system, pitch angle is determined by a pneumatically pressurized hydraulic actuator connected between crank arms on the blade pitch axles. The hydraulic line extends coaxially through the rotor drive shaft via a rotary union to a gas charged accumulator on the yaw carriage. The pitch axes are positively coupled for 1:1 counter-rotation by a gear train, preferably lying on the opposite side of the rotor axis from the hydraulic actuator.
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申请公布号 |
US4792281(A) |
申请公布日期 |
1988.12.20 |
申请号 |
US19860926463 |
申请日期 |
1986.11.03 |
申请人 |
NORTHERN POWER SYSTEMS, INC. |
发明人 |
COLEMAN, CLINT |
分类号 |
F03D7/04;F03D7/02;F15B1/02;(IPC1-7):F03D7/04 |
主分类号 |
F03D7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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