Yaw brake hydraulic system of wind driven generator
A hydraulic system, yaw technology, applied in wind turbines, wind turbine control, wind power generation and other directions, can solve the problem of uneven braking force
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[0012] The present invention will be further described below in conjunction with specific embodiment:
[0013] The oil cylinder group (1) is made up of six oil cylinders connected by series pipelines;
[0014] The throttle valve (13) ensures that the flow speed of the hydraulic oil in the hydraulic pipeline is balanced, which makes the oil cylinder group (1) move smoothly when pushing the piston rod out, thereby ensuring the stability of the hydraulic system when yaw braking.
[0015] There is a pressure sensor (12) in the hydraulic line,
[0016] Among them, the yaw braking unit includes a hydraulic pump (2), an oil filter (3), a one-way valve (15), a throttle valve (14), a two-position two-way electromagnetic reversing valve (6), an accumulator ( 7), oil cylinder group (1), etc., wherein there is a pressure feedback device in front of the accumulator (7), which is connected with the main oil circuit.
[0017] When yaw braking is required, the first reversing valve (6) and ...
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