A kind of wind generating unit
Technical field:
A kind of wind generating unit that can carry out transmission of power and rotating speed control that the utility model relates to by hydraulic transmission.
Background technique:
At present, known wind generating unit is made up of pylon, fan blade, cabin shell, gearbox and generator, and fan blade rotates under the wind-force effect, after the gearbox speedup, drives generator for electricity generation.Gearbox and generator are installed in the cabin shell on the pylon, make pylon bear bigger weight.The mode of speed regulation of system mainly is to adjust angle of fan leaves by hydraulic servomechanism to change rotating speed, thereby reach the purpose of speed governing, another kind of mode is that generator is not carried out constant speed control, realize the power frequency output of power supply by frequency conversion, inversion, preceding a kind of mode fan blade structure complexity, it is relatively poor to make difficulty, speed governing difficulty height, adjusting speed accuracy, a kind of mode electrical system complexity in back, and system's variable frequency inverter needs can adapt to the input voltage range than broad.
Summary of the invention:
The purpose of this utility model is to avoid the deficiencies in the prior art part and a kind of wind generating unit is provided.Thereby efficiently solve problems of the prior art.
The purpose of this utility model can be by realizing by the following technical solutions: described a kind of wind generating unit, include pylon (1), be characterized in also including described pylon (1) top and be provided with cabin shell (3), gearbox (4) and volume adjustable hydraulic pump (5) are installed in the cabin shell (3) on the pylon (1), fan blade (2) connects with volume adjustable hydraulic pump (5) by gearbox (4), volume adjustable hydraulic pump (5) links to each other with hydraulic oil container (9) with constant displacement hydraulic motor (6) respectively by hydraulic pipe line (10), and constant displacement hydraulic motor (6) directly connects with industrial frequency AC generator (7); Radiator (8) links to each other with hydraulic oil container (9) with constant displacement hydraulic motor (6) respectively by hydraulic pipe line (10).
Described constant displacement hydraulic motor (6), industrial frequency AC generator (7), radiator (8) and hydraulic oil container (9) are installed under the pylon (1).
Described a kind of wind generating unit, its beneficial effect comprise that its fan blade connects with volume adjustable hydraulic pump by gearbox, and volume adjustable hydraulic pump links to each other with constant displacement hydraulic motor by hydraulic pipe line, and constant displacement hydraulic motor directly connects with the industrial frequency AC generator.Utilize the high characteristics of hydraulic parts specific power such as oil hydraulic pump, oil hydraulic motor, adopt the hydraulic transmission technology generator that specific power is lower to move under the pylon from pylon, adopt the Hydraulic Adjustable Speed control technique, the unstable rotating speed of fan blade is controlled in the desired stable input speed of industrial frequency AC generator.This device can carry out transmission of power and rotating speed control by hydraulic transmission, can reduce the weight that pylon bears, and the unstable rotating speed of fan blade can be controlled in the desired stable input speed of industrial frequency AC generator.Flexible dynamic transmits, and has avoided the structural constraint of rigid mechanical transmission, makes total arrangement more flexible.
Description of drawings:
Fig. 1 is a structural principle schematic representation of the present utility model.
Embodiment:
Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing:
See Fig. 1, described a kind of wind generating unit, include pylon 1, be characterized in also including described pylon 1 top and be provided with cabin shell 3, gearbox 4 and volume adjustable hydraulic pump 5 are installed in the cabin shell 3 on the pylon 1, fan blade 2 connects with volume adjustable hydraulic pump 5 by gearbox 4, and volume adjustable hydraulic pump 5 links to each other with hydraulic oil container 9 with constant displacement hydraulic motor 6 respectively by hydraulic pipe line 10, and constant displacement hydraulic motor 6 directly connects with industrial frequency AC generator 7; Radiator 8 links to each other with hydraulic oil container 9 with constant displacement hydraulic motor 6 respectively by hydraulic pipe line 10.
Described constant displacement hydraulic motor 6, industrial frequency AC generator 7, radiator 8 and hydraulic oil container 9 are installed on pylon 1 time.
Described a kind of wind generating unit, it is under certain startup wind speed effect, fan blade 2 obtains wind energy and rotates, after gearbox 4 speedups, drive volume adjustable hydraulic pump 5, when normal variations per hour oil hydraulic pump 5 solenoid valves of system mode are opened, volume adjustable hydraulic pump 5 is started working, draw hydraulic oil from hydraulic oil container 9, hydraulic oil after the pressurization drives constant displacement hydraulic motor 6, constant displacement hydraulic motor 6 drives 7 generatings of industrial frequency AC generator, after the hydraulic oil acting, the radiator 8 of flowing through, hydraulic return fuel tank 9 after cooling off.The load-sensitive valve of volume adjustable hydraulic pump 5 by installing on it, the perception load variations, and adjust the swash plate angle according to load variations, the discharge capacity of controlled variable oil hydraulic pump 5, realization volume adjustable hydraulic pump 5 variable speeds input constant displacement hydraulic motor 6 is decided rotating speed output, thereby reaches the generating operation mode that industrial frequency AC generator 7 is decided the rotating speed input.