Fish tailing type lift-drag fusion vertical-axis wind wheel
A vertical axis and wind wheel technology, applied in the field of fish-swing tail lift-drag fusion vertical axis wind wheel, can solve the problems of low speed and poor start-up performance of the resistance wind wheel, achieve high running speed, reduce resistance, and avoid wind speed. diminished effect
Active Publication Date: 2015-05-27
HENAN UNIV OF SCI & TECH
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of poor start-up performance of the simple lift type wind wheel and low speed of the resistance type wind wheel in the prior art, and to provide a wind blade composed of simulated carp body and tail contour line geometry. The vertical axis wind wheel, the airflow moving on both sides of the blade of the bionic geometry is consistent with the water flow on both sides of the tail of the fish, which can change the movement state of the wind force and integrate lift and drag into one
Method used
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Embodiment 1
[0028] Such as Figure 4 The sample point connection diagram of the geometric section of the fan blade shown is formed by smoothly connecting the sample points in Table 1 below.
[0029] Table 1 Sample points of the geometric cross section of the wind blade
[0030]
[0031] Such as Figure 4 The fan blade shown is simulated by two parts of the fish body and the fish tail, and its overall contour curve is smoothly connected by a set of sample points. The blade of the present invention is composed of Figure 5 The fish tail model shown is simulated. The front half of the fish body exhibits the characteristics of a lift blade wind wheel at a certain angle of attack, and the rear half of the fish tail exhibits the characteristics of a drag blade wind wheel. The current situation of carp tail swinging. The shape of the front half of the carp tail swinging shows the characteristics of a lift-type wind wheel due to the difference in convexity. The shape of the back half of the carp swing...
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The invention discloses a fishing tail type lift-drag fusion vertical-axis wind wheel. The fish tailing type lift-drag fusion vertical-axis wind wheel comprises a central shaft, an upper cover plate and a lower bottom plate, wherein at least three fan blades are arranged between the upper cover plate and the lower bottom plate; an inner curved surface is arranged at one side of each fan blade, an outer curved surface is arranged at the other side of each fan blade; a boundary line of each outer curved surface and the upper end surface meets an equation f(x)=13.22x<7>-51.08x<6>+79.58x<3>-65.14x<4>+30x<3)-7.95x<2>+1.135x+0.007948, and a boundary line of each inner curved surface and the upper end surface meets an equation f(x)=48.51-54.53cos(1.571x)-56.82sin(1.571x)-1.339cos(3.142x)+40.82sin(3.142x)+8.975cos(4.713x)-8.37sin(4.713x)-1.619cos(6.284x)-0.05546sin(6.28x), x ranges from 0 to 1. The blades of the fish tailing type lift-drag fusion vertical-axis wind wheel refer to shapes of a fish body and a fish tail, and a secondary drive cavity is formed inside the wind wheel, so that the wind wheel has the functional advantages of high operation speed of a lift type wind wheel and good starting performance of a drag type wind wheel.
Description
Technical field [0001] The invention relates to the technical field of wind power generation, in particular to a fish-tail type lifting and drag fusion vertical axis wind wheel. Background technique [0002] Wind energy is a kind of clean, safe, renewable green energy. It is inexhaustible and inexhaustible. It has gradually become a new energy developed and utilized by countries all over the world. Wind turbines can be divided into two categories: horizontal axis wind turbines and vertical axis wind turbines. The structural feature of the horizontal axis wind turbine is that the rotation plane of the wind wheel is perpendicular to the wind direction, and the rotation axis is parallel to the ground. It is currently the most mature technology and the most widely used wind turbine. The characteristic of vertical axis wind turbine is that the rotation axis is perpendicular to the ground, and the rotation plane of the wind wheel is parallel to the wind direction. It has the advantage...
Claims
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IPC IPC(8): F03D3/06
CPCY02E10/74F03D3/061F05B2240/30
Inventor 杨宗霄李根生宋磊董冠强邓瑞涛武刚刚李希梅
Owner HENAN UNIV OF SCI & TECH