[发明专利]一种用于垂直轴风力发电机的叶片

摘要

一种用于垂直轴风力发电机的叶片，所述叶片为板式，叶片的横截面轮廓包括几何形状相互匹配的外侧翼型曲线和内侧翼型曲线，外侧翼型曲线和内侧翼型曲线为等距线，外侧翼型曲线为基准翼型曲线，外侧翼型曲线和内侧翼型曲线的起点经起点过渡圆弧光滑连接，外侧翼型曲线和内侧翼型曲线的终点经终点过渡圆弧光滑连接，本发明给出所述外侧翼型曲线由在直角坐标系中长度单位坐标点，将这些坐标点用光滑曲线连接起来，即得到外侧翼型曲线。对比试验表明，采用本发明叶片的垂直轴风力发电机，在相同的电机及负载、风轮直径高度相同、叶片弦长相同、同风速条件下可明显提高风机转速，低风速时效果更为明显。

主权项

一种用于垂直轴风力发电机的叶片，其特征在于：所述叶片为板式，叶片的横截面形状一侧为弧形、另一侧为钩状，叶片的横截面轮廓包括几何形状相互匹配的外侧翼型曲线（1）和内侧翼型曲线（2），外侧翼型曲线和内侧翼型曲线为等距线，外侧的翼型曲线为基准翼型曲线，外侧翼型曲线、内侧翼型曲线远离钩状的端点为起点，靠近钩状的端点为终点，外侧翼型曲线和内侧翼型曲线的起点经起点过渡圆弧（4）光滑连接，外侧翼型曲线和内侧翼型曲线的终点经终点过渡圆弧（3）光滑连接，所述外侧翼型曲线由R‑T、T‑S、S‑P三段曲线组成；建立平面直角坐标系，水平方向的坐标轴为X轴，竖直方向的坐标值为Y轴，平面直角坐标系的坐标原点按照如下方法确定：坐标原点距外侧翼型曲线起点R点在竖直方向的距离为0.0688长度单位，坐标原点距外侧翼型曲线起点R点在水平方向的距离为0，外侧翼型曲线位于平面直角坐标系的第一象限，所述 R‑T、T‑S、S‑P三段曲线上的相应点在平面直角坐标系中长度单位坐标值如下：R‑T曲线：XR     0          YAO         0.0688X1     0.01       YA1         0.0676X2     0.02       YA2         0.0662X3     0.03       YA3         0.0649X4     0.04       YA4         0.0637X5     0.05       YA5         0.0624X6     0.06       YA6         0.0661X7     0.07       YA7         0.0599X8     0.08       YA8         0.0587X9     0.09       YA9         0.0575X10    0.1        YA10        0.0563X11    0.11       YA11        0.0551X12    0.12       YA12        0.054X13    0.13       YA13        0.0529X14    0.14       YA14        0.0517X15    0.15       YA15        0.0506X16    0.16       YA16        0.0496X17    0.17       YA17        0.0485X18    0.18       YA18        0.0474X19    0.19       YA19        0.0464X20    0.20       YA20        0.0454X21    0.21       YA21        0.0444X22    0.22       YA22        0.0434X23    0.23       YA23        0.0424X24    0.24       YA24        0.0415X25    0.25       YA25        0.0406X26    0.26       YA26        0.0396X27    0.27       YA27        0.0387X28    0.28       YA28        0.0379X29    0.29       YA29        0.037X30    0.3        YA30        0.0362X31    0.31       YA31        0.0353X32    0.32       YA32        0.0345X33    0.33       YA33        0.0337X34    0.34       YA34        0.0329X35    0.35       YA35        0.0322X36    0.36       YA36        0.0314X37    0.37       YA37        0.0307X38    0.38       YA38        0.03X39    0.39       YA39        0.0293X40    0.4        YA40        0.0286X41    0.41       YA41        0.028X42    0.42       YA42        0.0274X43    0.43       YA43        0.0268X44    0.44       YA44        0.0262X45    0.45       YA45        0.0257X46    0.46       YA46        0.0252X47    0.47       YA47        0.0247X48    0.48       YA48        0.0242X49    0.49       YA49        0.0237X50    0.5        YA50        0.0233X51    0.51       YA51        0.0229X52    0.52       YA52        0.0225X53    0.53       YA53        0.0221X54    0.54       YA54        0.0218X55    0.55       YA55        0.0215X56    0.56       YA56        0.0212X57    0.57       YA57        0.0209X58    0.58       YA58        0.0206X59    0.59       YA59        0.0204X60    0.6        YA60        0.0202X61    0.61       YA61        0.02X62    0.62       YA62        0.0198X63    0.63       YA63        0.0197X64    0.64       YA64        0.0197T‑S曲线 XT    0.65       YB65        0.0198 X66   0.66       YB66        0.0199 X67   0.67       YB67        0.0201 X68   0.68       YB68        0.0204 X69   0.69       YB69        0.0207 X70   0.7        YB70        0.0212 X71   0.71       YB71        0.0217 X72   0.72       YB72        0.0223 X73   0.73       YB73        0.023 X74   0.74       YB74        0.0237 X75   0.75       YB75        0.0246 X76   0.76       YB76        0.0255 X77   0.77       YB77        0.0265 X78   0.78       YB78        0.0276 X79   0.79       YB79        0.0288 X80   0.8        YB80        0.03 X81   0.81       YB81        0.0313 X82   0.82       YB82        0.0320 X83   0.83       YB83        0.0327 X84   0.84       YB84        0.0342 X85   0.85       YB85        0.0358 X86   0.86       YB86        0.0374 X87   0.87       YB87        0.0392 X88   0.88       YB88        0.041 X89   0.89       YB89        0.0429 X90   0.9        YB90        0.045 X91   0.91       YB91        0.0472 X92   0.92       YB92        0.0498 X93   0.93       YB93        0.0526 X94   0.94       YB94        0.0557 X95   0.95       YB95        0.0592 X96   0.96       YB96        0.063 X97   0.97       YB97        0.0672 X98   0.98       YB98        0.0719 X99   0.99       YB99        0.0771S‑P曲线XS     1          YC100       0.1217X101   0.99       YC101       0.1485X102   0.98       YC102       0.1591X103   0.97       YC103       0.1656X104   0.96       YC104       0.1708X105   0.95       YC105       0.1755X106   0.94       YC106       0.1798X107   0.93       YC107       0.1836X108   0.92       YC108       0.1871X109   0.91       YC109       0.1902X110   0.9        YC110       0.193X111   0.89       YC111       0.1955X112   0.88       YC112       0.1978X113   0.87       YC113       0.1999X114   0.86       YC114       0.2018X115   0.85       YC115       0.2036XP     0.84       YC116       0.2048上述参数中R‑T曲线的Y坐标值以字母YA标识、T‑S曲线的Y坐标值以字母YB标识、S‑P曲线的Y坐标值以字母YC标识,将由上述各坐标值确定的点依次用光滑曲线连接起来，即得到所述外侧翼型曲线。