Hydraulic transmission speed change frequency stabilized wind power generation machine
Technical field
The utility model relates to a kind of generator, specifically is a kind of hydraulic transmission speed change frequency stabilized wind power generation machine.
Background technique
Along with the fast development of national economy, energy shortage has become a problem that is on the rise, and wind energy development, development wind-power electricity generation are the research topics that current energy project receives much concern.As everyone knows, wind energy is present in nature, and it is caused by solar radiant heat, and solar energy impinges is to earth surface, causes the earth surface inequality of being heated, and produces the temperature difference, causes the convection current of atmosphere and forms wind.Wind is flow air, and it has speed, and density is arranged, so contain energy, wind is inexhaustible clean energy resource, but the randomness that wind energy distributes is very strong, does not have specific rule, in different regions, and Various Seasonal, the wind-force of different periods is all inequality.Because the unstability of natural wind energy, giving in the wind-powered electricity generation conversion needs the generator of stabilization of speed to bring very big difficulty, becomes the major technique obstacle of wind-powered electricity generation development.
Present big-and-middle-sized wind-driven generator all adopts the gear-box mechanical speed change by generator to the requirement of rotating speed, then is the angle that changes the windward side of blade by hydraulic transmission to the control of rotating speed.Because hydraulic transmission reflection lags behind, and causes wheel speed very unstable, generate electricity energy and frequency of institute is also very unstable.
Small-sized wind power generator generally adopts vanes fixed at present, does not control wheel speed, and takes to send out direct current, charges into storage battery, behind the storage battery pressure-raising, becomes Ac through inverter again, uses for the user again.This way, not only electricity consumption inconvenience has also improved electric cost simultaneously.
The model utility content
Technical problem to be solved in the utility model provides a kind of hydraulic transmission speed change frequency stabilized wind power generation machine, can directly produce satisfactory Ac with wind-driven generator, directly exports to the user and uses.
The utility model is achieved through the following technical solutions:
The utility model hydraulic transmission speed change frequency stabilized wind power generation machine, comprise impeller shaft and alternator, also comprise hydraulic transmission speed change frequency stabilizing system, hydraulic transmission speed change frequency stabilizing system comprises oil hydraulic pump, oil hydraulic motor, accumulator and automatic control flow valve, described oil hydraulic pump input shaft is connected with impeller shaft, hydraulic motor output shaft is connected with the alternator input shaft, be connected to automatic control flow valve in outlet of described oil hydraulic pump and oil hydraulic motor inlet inter-burst, described accumulator is installed on oil hydraulic motor outlet and the oil hydraulic pump oil hydraulic circuit between entering the mouth.
The utility model hydraulic transmission speed change frequency stabilized wind power generation machine, the oil hydraulic pump quick-action of keeping watch can convert the hydraulic pressure energy to, oil hydraulic motor can convert hydraulic pressure to mechanical energy, by alternator mechanical energy is converted to electric energy, can make the oil hydraulic motor stabilization of speed in the needed speed range of alternator stable electric generation by automatic control flow valve and accumulator, can directly produce satisfactory Ac with wind-driven generator, directly export to the user and use.The utility model also has simple in structure, low cost of manufacture, advantage such as installation fee and maintenance cost are lower.
Description of drawings
Fig. 1 is the principle schematic of the utility model hydraulic transmission speed change frequency stabilized wind power generation machine;
Among the figure: 1-blade, 2-impeller, 4-impeller shaft, 5-oil hydraulic pump, 6-oil hydraulic motor, 7-alternator, 8-automatic control flow valve, 9-accumulator.
Embodiment
Below by specific embodiment the utility model is described in further detail.
Shown in Figure of description 1, the utility model hydraulic transmission speed change frequency stabilized wind power generation machine, comprise impeller shaft 4 and alternator, also comprise hydraulic transmission speed change frequency stabilizing system, hydraulic transmission speed change frequency stabilizing system comprises oil hydraulic pump 5, oil hydraulic motor 6, accumulator 9 and automatic control flow valve 8, oil hydraulic pump 5 input shafts are connected with impeller shaft 4, oil hydraulic motor 6 output shafts are connected with alternator 7 input shafts, between oil hydraulic pump 5 outlets and oil hydraulic motor 6 inlets automatic control flow valve 8 is installed, accumulator 9 is installed between oil hydraulic motor 6 outlets and oil hydraulic pump 5 inlets.
Oil hydraulic pump flow, oil hydraulic motor flow, impeller and oil hydraulic pump rotating speed, oil hydraulic motor and four basic parameters of generator speed meet following relation:
Automatic control flow valve 8 is changed the Influences on Wind Velocity delivery pressure also under situation about constantly changing at oil hydraulic pump 5, and control keeps stable to oil hydraulic motor 6 fuel supply flow rates, the interference of the fluid pressure that is not changed.Accumulator 9 can guarantee that hydraulic system remains certain back pressure, and must be that this system just has higher back pressure before use, has the function of liquid storage simultaneously, guarantees that hydraulic work system is reliable.
The power configuration of generator 7 is the power configuration that can change by the safe wind of maximum.
The conversion relation of the utility model hydraulic transmission speed change frequency stabilized wind power generation function is: wind energy process blade 1 and impeller 2 are converted into mechanical energy rotates impeller shaft 4, drive oil hydraulic pump 5 quick-action of keeping watch again and can convert the hydraulic pressure energy to, oil hydraulic motor 6 can convert hydraulic pressure to mechanical energy, by alternator 7 mechanical energy is converted to electric energy, directly export to the user and use.The hydraulic transmission speed change frequency stabilizing system that constitutes by oil hydraulic pump, oil hydraulic motor, automatic control flow valve and accumulator, can realize changing to the required high rotating speed of generator by the slow-speed of revolution of impeller, also make the stabilization of speed of generator in the scope of technical requirements simultaneously by automatic control flow valve and accumulator, therefore can realize the high quality of wind-power electricity generation electric energy, do not need processes such as storage battery, transformation, speed governing, inversion, produce the Ac of 380V/220V, 50Hz, but the direct-furnish user uses.