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Vertical axis wind turbine capable of adjusting attack angle by using wind power
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A technology of energy adjustment and vertical axis, which is applied in the direction of wind turbines, control of wind turbines, and wind turbines at right angles to the wind direction, etc., which can solve the problems of low efficiency, inability to automatically adjust the angle of attack, etc., and achieve the effect of maintaining stable operation
Inactive Publication Date: 2012-08-01
郑尔历 +1
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[0024] The purpose of the present invention is to provide a vertical axis wind turbine that utilizes the energy of the wind itself to adjust the angle of attack, so as to solve the problems that existing vertical axis wind turbines cannot automatically adjust the angle of attack and have low efficiency
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Embodiment 1
[0055] Such as figure 2 , 3 , shown in 4, a kind of vertical axis wind turbine that utilizes wind powerself energy to adjust the angle of attack of the present invention comprises blade 8, frame, and frame is 6, and frame is made of rotating main shaft 2, upper crossbeam 3, lower crossbeam 4, inner side pole 5 and the outer pole 6, the upper beam 3 and the lower beam 4 are fixed on the rotating spindle 2, the inner pole 5 and the outer pole 6 are fixed between the upper beam 3 and the lower beam 4, the inner pole 5 and the outer pole Elastic assemblies 7 are arranged symmetrically between the rods 6 , blades 8 are arranged between the elastic assemblies 7 , and the blade swing shaft 9 is fixed between the upper beam 3 and the lower beam 4 .
[0056] Such as Figure 8 As shown, the blade swing axis 9 is arranged between the longitudinal centerline of the blade orthographic projection plane and the blade head.
[0057] Looking at the cross section of the blade from the top ...
Embodiment 2
[0062] The distance between the blade swing axis 9 and the blade tail is BC, the distance between the blade swing axis 9 and the blade head is AB, and the ratio of BC:AB is 6:4.
[0063] The distance between the inner vertical rod 5 and the outer vertical rod 6 is three times the width of the blade 8 .
[0064] Such as Figure 10 As shown, the shape of the elastic component 7 in this embodiment is "*" shape.
[0065] Others are the same as embodiment 1.
Embodiment 3
[0067] The distance between the blade swing axis 9 and the blade tail is BC, the distance between the blade swing axis 9 and the blade head is AB, and the ratio of BC:AB is 6.5:3.5.
[0068] Such as Figure 11 As shown, the shape of the elastic component 7 in this embodiment is "C" shape.
[0069] The distance between the inner vertical rod 5 and the outer vertical rod 6 is 1 time of the width of the blade 8 .
[0070] Others are the same as embodiment 1.
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Abstract
The invention provides a vertical axis wind turbine capable of adjusting an attack angle by using wind power. The vertical axis wind turbine comprises blades and at least two frames, wherein each frame consists of a rotary main shaft, an upper cross beam, a lower cross beam, an inner side vertical rod and an outer side vertical rod; the upper cross beam and the lower cross beam are fixed on the rotary main shaft; the inner side vertical rod and the outer side vertical rod are fixed between the upper cross beam and the lower cross beam; elastic components are symmetrically arranged between the inner side vertical rod and the outer side vertical rod; the blades are arranged among the elastic components; and a blade oscillating shaft is fixed between the upper cross beam and the lower cross beam, and is arranged between a longitudinal center line of an orthographic projection surface of each blade and a head part of the blade. The vertical axis wind turbine fully uses the power of wind energy, can automatically adjust the blades to have the best angles at different positions in time, and has an outer frame structure with the highest structural strength, solves the practical problem of adjusting the attack angle of each blade in a very short time, and has a good practical use effect.
Description
technical field [0001] The invention relates to a vertical shaft (also known as vertical shaft) wind turbine, which is a mechanical device that converts wind energy into mechanical energy by horizontally rotating the vertical shaft and vertical blades. Background technique [0002] When the vertical axis wind turbine is running, because half of the blades rotate against the wind direction, there are problems of "negative lift" and "negative thrust", so the efficiency of the vertical axis wind turbine in the form of fixed blades is very low. [0003] At the beginning of this century, the German "A. Bates" put forward a systematic wind energy utilization theory (including the derivation of mathematical formulas), pointing out that the theoretical wind energy utilization efficiency of the horizontal axispropeller wind turbine is only 0.593 of the total energy in the wind energy (that is, the wind energy utilization efficiency coefficient), plus the various losses in the variou...
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Application Information
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