Venturi-type breeze and moderate wind electric generator

Abstract

The invention relates to a venturi-type breeze and moderate wind electric generator. The venturi-type breeze and moderate wind electric generator comprises a wind gathering cover, a wind wheel, an engine room, a tower frame and a direction adjuster for adjusting the steering of the wind wheel, wherein the wind gathering cover comprises a contraction part; the direction adjuster comprises a direction adjusting shaft; the wind wheel is arranged nearby the tail end of the contraction part and is correspondingly connected to a transmission gear in the engine room through a rotating shaft; the contraction part is of a truncated pyramid structure formed by correspondingly connecting a first flaring frame, a first necking frame and a plurality of arris rods; a wind gathering plate is laid on eachside surface, corresponding to the truncated pyramid, of the outer side of the contraction part; the outer end of each wind gathering plate is rotatably connected to a side rod of the corresponding first flaring frame; and an elastic contracting device for tightening the side surface, fit to the truncated pyramid, of the wind gathering plate is arranged on each wind gathering plate. The venturi-type breeze and moderate wind electric generator can expand the range of working wind speed while achieving the effect of the breeze and moderate wind power generation, reduces the probability of damage to the electric generator when the wind speed is too large, and improves the utilization efficiency of wind energy.

Description

technical field [0001] The invention relates to the field of wind power generation equipment, in particular to a Venturi type breeze and stroke generator. Background technique [0002] Because wind energy is a clean and pollution-free renewable energy, coupled with the difficulties in power transmission in some areas, wind power generation has been vigorously promoted in my country; wind power generators generally include wind rotors, power generation devices, steering devices (tail fins), towers, etc. Frame, speed limit safety mechanism and energy storage device and other components; as known, when the wind speed reaches the lower limit of the wind speed of the wind generator, the wind generator starts to work, when the wind speed reaches the upper limit of the wind speed of the wind generator , in order to prevent the speed of the wind rotor from exceeding the design speed, a speed limit safety mechanism is generally set up to limit the speed or brake the shaft; because wind...

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Problems solved by technology

[0002] Because wind energy is a clean and pollution-free renewable energy, coupled with the difficulties in power transmission in some areas, wind power generation has been vigorously promoted in my country; wind power generators generally include wind rotors, power generation devices, steering devices (tail fins), towers, etc. Frame, speed limit safety mechanism and energy storage device and other components; as known, when the wind speed reaches the lower limit of the wind speed of the wind generator, the wind generator starts to work, when the wind speed reaches the upper limit of the wind speed of the wind generator , in order to prevent the speed of the wind rotor from exceeding the design speed, a speed limit safety mechanism is generally set up to limit the speed or brake the shaft; because wind power generation is greatly limited by the wind speed, domestic wind turbines are generally established at an annual average wind speed of 6m / s Even so, there are only 60 to 120 days a year to reach the working wind speed of wind turbines, not to mention some low wind speed areas with wind speeds of 3 to 5m / s, where the wind speed is small and unstable. Small and medium-sized wind turbines can be used, even wind power generation cannot be used, and the utilization rate of wind energy is low;

[0003] A Chinese utility model patent with the notification number CN202215426U discloses a wind turbine with a gradually expanding wind collecting hood. The wind wheel is arranged in the outlet passage of the wind collecting hood. The airflow in order to increase the wind speed in the passage, so as to achieve the purpose of enabling the wind turbine to work in the low wind speed area; compared with the same traditional wind turbine, the disadvantage of setting the wind collector is that it only reduces the wind force The range of the working wind speed of the generator, that is, the upper limit and the lower limit of the working wind speed are lowered at the same time. Although the wind speed can be changed so that the lower limit of the working wind speed of the wind turbine can be reached even when there is a breeze or low wind, but It is also easy to change the instantaneous high wind speed, even the normal wind speed for traditional wind turbines with the same conditions, into a dangerous wind speed, so that this part of the wind energy cannot be utilized, and even the generator will cause power generation due to excessive wind pressure. The device is out of control or damaged;

[0004] A Chinese invention patent with the notification number CN107387317A discloses an adjustable damping device for a narrow tube wind gathering power generation system. By adding an openable louver structure on the front of the narrow tube air inlet, it can be used when the wind speed is too high. When the shutter is closed, the purpose of protecting the generator is, but its wind energy utilization rate is also not high, and when the shutter is closed, its windward side is too large and is easily damaged by wind pressure

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