[发明专利]一种具有较高风能利用效率的垂直轴风力发电机

摘要

一种具有较高风能利用效率的垂直轴风力发电机，构成中包括中心柱、叶片和横撑杆，各叶片垂直设置，它们相对中心柱轴线均匀分布，叶片由横撑杆连接中心柱,改进后,所述各叶片的截形轮廓由O-Q、O-R、P-Q、P-R四条曲线组成，所述叶片截形的一侧为钩状端，钩状端朝外设置。本发明通过对叶片及横撑杆截形的优化设计，可明显增大风阻力，提高风阻力差，尤其是风机在较低风速下的发电能力可大幅度提高。对比试验表明，与同类垂直轴风力发电机相比，本发明低风速时发电机发电电压提高近10倍，高风速时发电电压提高50%以上。

主权项

一种具有较高风能利用效率的垂直轴风力发电机，构成中包括中心柱（1）、叶片（3）和横撑杆（2），各叶片垂直设置，它们相对中心柱轴线均匀分布，叶片由横撑杆连接中心柱，其特征在于：所述叶片的一侧为钩状端（3‑1），钩状端朝外设置；所述叶片截形轮廓由O‑Q、O‑R、P‑Q、P‑R四条曲线组成、四条曲线由下述参数确定：建立平面直角坐标系，以所述截形的一端为坐标原点，各曲线相应点的坐标值如下：O‑Q曲线：                          Xo       0    Yao       0           X1       1    Ya1     0. 6312           X2       2    Ya2     0. 8929           X3       3    Ya3     1.1320           X4       4    Ya4     1.3510           X5       5    Ya5     1.5522           X6       6    Ya6     1.7376           X7       7    Ya7     1.9089           X8       8    Ya8     2.0674           X9       9    Ya9     2.2146          X10      10   Ya10     2.3518          X11      11    Ya11    2.4797          X12      12    Ya12    2.5988          X13      13    Ya13    2.7097          X14      14    Ya14    2.8130          X15      15    Ya15    2.9092          X16      16    Ya16    2.9986          X17      17    Ya17    3.0814          X18      18    Ya18    3.1579          X19      19    Ya19    3.2284          X20      20    Ya20    3.2930          X21      21    Ya21    3.3520          X22      22    Ya22    3.4056          X23      23    Ya23    3.4539          X24      24    Ya24    3.4971          X25      25    Ya25    3.5354          X26      26    Ya26    3.5690          X27      27    Ya27    3.5979          X28      28    Ya28    3.6224          X29      29    Ya29    3.6425          X30      30    Ya30    3.6584          X31      31    Ya31    3.6702          X32      32    Ya32    3.6780          X33      33    Ya33    3.6820         X34      34    Ya34    3.6823          X35      35    Ya35    3.6789          X36      36    Ya36    3.6720          X37      37    Ya37    3.6616          X38      38    Ya38    3.6479          X39      39    Ya39    3.6309          X40      40    Ya40    3.6106          X41      41     Ya41   3.5873          X42      42     Ya42   3.5609          X43      43     Ya43   3.5316          X44      44     Ya44   3.4994          X45      45     Ya45   3.4645          X46      46     Ya46   3.4268          X47      47     Ya47   3.3865          X48      48     Ya48   3.3437          X49      49     Ya49   3.2984          X50      50     Ya50   3.2507          X51      51     Ya51   3.2007          X52      52     Ya52   3.1484          X53      53     Ya53   3.0940          X54      54     Ya54   3.0375          X55      55     Ya55   2.9789          X56      56     Ya56   2.9160          X57      57     Ya57   2.8496          X58      58     Ya58   2.7902          X59      59     Ya59   2.7403          X60      60     Ya60   2.7024          X61      61     Ya61   2.6789          X62      62     Ya62   2.6727          X63      63     Ya63   2.6868          X64      64     Ya64   2.7242          X65      65     Ya65   2.7887          X66      66     Ya66   2.8841          X67      67     Ya67   3.0150          X68      68     Ya68   3.1867          X69      69     Ya69   3.4054          X70      70     Ya70   3.6785          X71      71     Ya71   4.0150          X72      72     Ya72   4.4263          X73      73     Ya73   4.9268          X74      74     Ya74   5.5741          X75      75     Ya75   6.6965        Xq       75.7    Yq    9.2210；O‑R 曲线：          Xo      0     Ybo       0           X1      1     Yb1    ‑0. 337           X2      2     Yb2    ‑0.0 96           X3      3     Yb3    0. 1236           X4      4     Yb4    0. 3231           X5      5     Yb5    0. 5052           X6      6     Yb6    0. 6717           X7      7     Yb7    0. 8243           X8      8     Yb8    0. 9643           X9      9     Yb9    1.0932          X10     10     Yb10   1.2121          X11     11     Yb11   1.3219          X12     12     Yb12   1.4229          X13     13     Yb13   1.5159          X14     14     Yb14   1.6013          X15     15     Yb15   1.6796          X16     16     Yb16   1.7512          X17     17     Yb17   1.8162          X18     18     Yb18   1.8749          X19     19     Yb19   1.9276          X20     20     Yb20   1.9745          X21     21     Yb21   2.0159          X22     22     Yb22   2.0518          X23     23     Yb23   2.0824          X24     24     Yb24   2.1080          X25     25     Yb25   2.1287          X26     26     Yb26   2.1446          X27     27     Yb27   2.1560          X28     28     Yb28   2.1628          X29     29     Yb29   2.1654          X30     30     Yb30   2.1637          X31     31     Yb31   2.1579          X32     32     Yb32   2.1482          X33     33     Yb33   2.1346          X34     34     Yb34   2.1174          X35     35     Yb35   2.0964          X36     36     Yb36   2.0719          X37     37     Yb37   2.0440          X38     38     Yb38   2.0127          X39     39     Yb39   1.9781          X40     40     Yb40   1.9403          X41     41     Yb41   1.8994          X42     42     Yb42   1.8555          X43     43     Yb43   1.8086          X44     44     Yb44   1.7588          X45     45     Yb45   1.7063          X46     46     Yb46   1.6510          X47     47     Yb47   1.5931          X48     48     Yb48   1.5327          X49      49    Yb49   1.4698          X50      50    Yb50   1.4045          X51      51    Yb51   1.3369          X52      52    Yb52   1.2670          X53      53    Yb53   1.1949          X54      54    Yb54   1.1208          X55      55    Yb55   1.0446          X56      56    Yb56   0. 9636          X57      57    Yb57   0. 8758          X58      58    Yb58   0. 7833          X59      59    Yb59   0.6886          X60      60    Yb60   0.5948          X61      61    Yb61   0.5022          X62      62    Yb62   0.4111          X63      63    Yb63   0.3219          X64      64    Yb64   0.2347          X65      65    Yb65   0.1501          X66      66    Yb66   0.0683          X67      67    Yb67   ‑0.01          X68      68    Yb68   ‑0.0860          X69      69    Yb69   ‑0.1570          X70      70    Yb70   ‑0.2240          X71      71    Yb71   ‑0.2870          X72      72    Yb72   ‑0.3460          X73      73    Yb73   ‑0.3990          X74      74    Yb74   ‑0. 4470          X75      75    Yb75   ‑0.4900          X76      76    Yb76   ‑0. 5270          X77      77    Yb77   ‑0.5580          X78      78    Yb78   ‑0.5820          X79      79    Yb79   ‑0.5990          X80      80    Yb80   ‑0. 6100         X81      81    Yb81   ‑0. 6120          X82      82    Yb82   ‑0. 6070          X83      83    Yb83   ‑0. 5920          X84      84    Yb84   ‑0. 5690          X85      85    Yb85   ‑0. 5360          X86      86    Yb86   ‑0. 4930          X87      87    Yb87   ‑0.4400          X88      88    Yb88   ‑0.3770          X89      89    Yb89   ‑0.3020          X90      90    Yb90   ‑0.2160          X91      91    Yb91   ‑0.1160          X92      92    Yb92   ‑0.0023          X93      93    Yb93   0.1307          X94      94    Yb94   0.2872          X95      95    Yb95   0.4719          X96      96    Yb96   0.6922          X97      97    Yb97   0. 9385          X98      98    Yb98   1.2517          X99      99    Yb99   1.7502         Xr      100      Yr    3.5176；P‑Q 曲线：          Xp     57.5    Ycp     18.9571          X58     58     Yc58    18.4603          X59     59     Yc59    18.4641          X60     60     Yc60    18.4205          X61     61     Yc61    18.3248          X62     62     Yc62    18.1776          X63     63     Yc63    17.9818          X64     64     Yc64    17.7528          X65     65     Yc65    17.4908          X66     66     Yc66    17.1927          X67     67     Yc67    16.8549          X68     68     Yc68    16.4728          X69     69     Yc69    16.0407          X70     70     Yc70    15.5518          X71     71     Yc71    14.9969          X72     72     Yc72    14.3643          X73     73     Yc73    13.6378          X74     74     Yc74    12.7947          X75     75     Yc75    11.6926          Xq      757    Yq       9.221；P‑R曲线：          Xp     57.5    Ydp     18.9571          X58     58     Yd58   19.4555          X59     59     Yd59   19.4836          X60     60     Yd60   19.5035          X61     61     Yd61   19.515          X62     62     Yd62   19.5178          X63     63     Yd63   19.5119          X64     64     Yd64   19.4968          X65     65     Yd65   19.4724          X66     66     Yd66   19.4383          X67      67    Yd67   19.3942          X68      68    Yd68   19.3396          X69      69    Yd69   19.2743          X70      70    Yd70   19.1978          X71      71    Yd71   19.1096          X72      72    Yd72   19.0092          X73      73    Yd73   18.8962          X74      74    Yd74   18.7700          X75      75    Yd75   18.6300          X76      76    Yd76   18.4755          X77      77    Yd77   18.3060          X78      78    Yd78   18.1207          X79      79    Yd79   17.9188          X80      80    Yd80   17.6994          X81      81    Yd81   17.4613          X82      82    Yd82   17.2037          X83      83    Yd83   16.9251          X84      84    Yd84   16.6243          X85      85    Yd85   16.2995          X86      86    Yd86   15.9492          X87      87    Yd87   15.5711          X88      88    Yd88   15.1624          X89      89    Yd89   14.7200          X90      90    Yd90   14.2402          X91      91    Yd91   13.7183          X92      92    Yd92   13.1485          X93      93    Yd93   12.5238          X94      94    Yd94   11.8355          X95      95    Yd95   11.0676          X96      96    Yd96   10.1992          X97      97    Yd97   9.1976          X98      98    Yd98   7.9982          X99      99    Yd99   6.4736         Xr       100     Yr    3.5176；将上述各曲线坐标点用曲线连接起来，即得到叶片截形轮廓。