Speed increasing device and wind generating set

Abstract

The invention discloses a speed increasing device for a wind generating set. The speed increasing device comprises a speed increasing gear mechanism and at least one hydraulic speed increasing unit; the input shaft of the speed increasing gear mechanism is connected with the input shaft of a wind wheel of the wind generating set; the hydraulic speed increasing unit comprises a hydraulic pump (1) and a hydraulic motor (2); the input shaft of the hydraulic pump (1) is connected with the output shaft of the wind wheel of the wind generating set; the oil inlet of the hydraulic pump (1) is communicated with an oil tank, and the oil outlet of the hydraulic pump (1) is communicated with the oil inlet of the hydraulic motor (2); the oil outlet of the hydraulic motor (2) is communicated with the oil tank; the output shaft of the hydraulic motor (2) is connected with the input shaft of a generator which is matched with the hydraulic motor (2); and the speed increasing device is high in generality, simple in structural design, low in failure rate and high in working efficiency and easy to manufacture and assemble. Moreover, the invention also provides the wind generating set comprising the speed increasing device.

Description

Technical field [0001] The invention relates to the technical field of wind power generation, in particular to a gearbox device for a wind power generating set. In addition, the present invention also relates to a wind power generating set including the above gearbox device. Background technique [0002] With the rapid development of economic construction, wind energy, as a new energy source, is more and more widely used in the field of power generation by countries all over the world. [0003] A wind turbine generally includes a wind wheel, a speed increasing device and a generator. The wind wheel is an important component that converts the kinetic energy of the wind into mechanical energy. Its function is to convert the kinetic energy of the flowing air into rotating mechanical energy. [0004] Please refer to figure 1 , figure 1 It is a schematic structural diagram of a typical speed-increasing device used in a wind generator set in the prior art. [0005] The speed increasing dev...

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Problems solved by technology

[0006] According to the different installed power of a single wind turbine, the structure of the gear transmission mechanism 3' is also correspondingly different. Generally, with the increase of the installed power of a single wind turbine, the volume of the speed-increasing gearbox continues to increase, and its structure Correspondingly, it is becoming more and more complex, and the design difficulty is also increasing.

[0007] To sum up, the speed-increasing gearboxes of wind turbines in the prior art are relatively poor in versatility, complex in structure, and relatively high in cost. Especially for wind turbines with relatively high installed power, the design of the speed-increasing gearbox requires investment Relatively large manpower and material resources, and the design cycle is relatively long, and the cost of use is higher

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