[发明专利]一种用于H型垂直轴风力发电机的叶片结构

摘要

一种用于H型垂直轴风力发电机的叶片结构，用于解决提高风力发电机风能利用率及低风速启动性能等问题。所述叶片结构由一组竖直设置在旋转主轴周边的叶片构成，其特别之处是：各叶片的横截面轮廓由O-S、O-T、S-Q、Q-P、P-R、T-R六条曲线组成，本发明给出上述各条曲线的坐标点，将这些坐标点用光滑曲线连接起来，即得到叶片的横截面轮廓。采用该叶片，可明显增大风机的风阻力，提高风阻力差，尤其是在较低风速下的风机的发电能力得以大幅度提高。对比试验表明，在风力发电机其它结构类同的条件下，采用本发明叶片，其低风速时发电电压可提高10倍以上，中高风速时发电电压提高2倍左右。

主权项

一种用于H型垂直轴风力发电机的叶片结构，它由一组竖直设置在旋转主轴周边的叶片构成，其特征在于：所述各叶片（1）的横截面轮廓由O‑S、O‑T、S‑Q、Q‑P、P‑R、T‑R六条曲线组成，上述六条曲线由下述参数确定：建立平面直角坐标系，以所述叶片横截面轮廓一端的O点为坐标原点，各曲线相应点的长度单位坐标值如下：O‑S曲线：                 XO       0          YO            0X1       0.02        Y1A          0.00323894，X2       0.04        Y2A          0.000344178，X3       0.06        Y3A         ‑0.0024809，X4       0.08        Y4A         ‑0.005236396，X5       0.1        Y5A          ‑0.007922409，X6       0.12        Y6A         ‑0.010539035，X7       0.14        Y7A         ‑0.013086365，X8       0.16        Y8A         ‑0.015564243，X9       0.18        Y9A         ‑0.017964667，X10  0.2        Y10A     ‑0.020271062，X11  0.22        Y11A        ‑0.022470028，X12  0.24        Y12A        ‑0.024552797，X13  0.26        Y13A        ‑0.026516026，X14  0.28        Y14A        ‑0.028361017，X15  0.3        Y15A     ‑0.030088393，X16  0.32        Y16A        ‑0.031697742，X17  0.34        Y17A        ‑0.033189029，X18  0.36        Y18A        ‑0.034563582，X19  0.38        Y19A        ‑0.035823669，X20  0.4       Y20A      ‑0.036972775，X21  0.42        Y21A        ‑0.038014282，X22  0.44        Y22A        ‑0.038950548，X23  0.46        Y23A        ‑0.039782636，X24  0.48        Y24A        ‑0.040515615，X25  0.5        Y25A     ‑0.04110989，X26  0.52        Y26A        ‑0.04150204，XS       0.54        YS          ‑0.04163087；S‑Q 曲线：XS      0.54        YS          ‑0.04163087，X28     0.56        Y28B        ‑0.041441701，X29     0.58        Y29B        ‑0.04091136，X30     0.6        Y30B     ‑0.040049223，X31     0.62        Y31B        ‑0.038887264，X32     0.64        Y32B        ‑0.037464269，X33     0.66        Y33B        ‑0.035752929，X34     0.68        Y34B        ‑0.033660463，X35     0.7        Y35B     ‑0.031076748，X36     0.72        Y36B        ‑0.027855632，X37     0.74        Y37B        ‑0.023781095，X38     0.76        Y38B        ‑0.018495683，X39     0.78        Y39B        ‑0.011307352，X40     0.8        Y40B     ‑0.000431704，XQ      0.82        YQ         0.032613566；P‑Q 曲线：     XP         0.8        YP          0.081292589，XQ      0.82       YQ        0.032613566；P‑R曲线：    XP      0.8        YP          0.081292589，X41     0.82        Y41C        0.07970989，X42     0.84        Y42C        0.077273907，X43     0.86        Y43C        0.074289241，X44     0.88        Y44C        0.070620296，X45     0.9        Y45C     0.066103917，X46     0.92        Y46C        0.06058726，X47     0.94        Y47C        0.053725659，X48     0.96        Y48C        0.04467892，X49     0.98        Y49C        0.032042428，XR      1           YR         ‑0.004133224；O‑T曲线：XO      0          Y0           0X1      0.02        Y1D         ‑0.008500545，X2      0.04        Y2D         ‑0.012587023，X3      0.06        Y3D         ‑0.016603353，X4      0.08        Y4D         ‑0.020527238，X5      0.1        Y5D      ‑0.024340414，X6      0.12        Y6D         ‑0.028056729，X7      0.14        Y7D         ‑0.031692468，X8      0.16        Y8D         ‑0.035248398，X9      0.18        Y9D         ‑0.038722499，X10     0.2        Y10D     ‑0.042114857，X11     0.22        Y11D        ‑0.045426038，X12     0.24        Y12D        ‑0.048656681，X13     0.26        Y13D        ‑0.051807092，X14     0.28        Y14D        ‑0.054876361，X15     0.3        Y15D     ‑0.05786307，X16     0.32        Y16D        ‑0.060764944，X17     0.34        Y17D        ‑0.063579665，X18     0.36        Y18D        ‑0.066305412，X19     0.38        Y19D        ‑0.068940166，X20     0.4        Y20D     ‑0.071480776，X21     0.42        Y21D        ‑0.073923199，X22     0.44        Y22D        ‑0.07626106，X23     0.46        Y23D        ‑0.078487857，X24     0.48        Y24D        ‑0.080598501，X25     0.5        Y25D     ‑0.082587464，X26     0.52        Y26D        ‑0.084446372，X27     0.54        Y27D        ‑0.086166156，X28     0.56        Y28D        ‑0.087737536，X29     0.58        Y29D        ‑0.089150759，X30     0.6        Y30D     ‑0.090394427，X31     0.62        Y31D        ‑0.091456269，X32     0.64        Y32D        ‑0.092322135，X33     0.66        Y33D        ‑0.092976651，X34     0.68        Y34D        ‑0.093401469，XT      0.7        YT           ‑0.093577062；T‑R曲线：XT      0.7        YT          ‑0.093577062，X36     0.72        Y36E        ‑0.093482195，X37     0.74        Y37E        ‑0.093093739，X38     0.76        Y38E        ‑0.092383089，X39     0.78        Y39E        ‑0.091317546，X40     0.8        Y40E     ‑0.089854784，X41     0.82        Y41E        ‑0.087948127，X42     0.84        Y42E        ‑0.085543359，X43     0.86        Y43E        ‑0.082567046，X44     0.88        Y44E        ‑0.078889497，X45     0.9        Y45E     ‑0.074370722，X46     0.92        Y46E        ‑0.068856497，X47     0.94        Y47E        ‑0.061995627，X48     0.96        Y48E        ‑0.05294816，X49     0.98        Y49E        ‑0.040311353，XR      1           YR         ‑0.004133224；将上述各条曲线的坐标点用光滑曲线连接起来，即得到叶片的横截面轮廓。