利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN101349168A 空冷汽轮机末级动叶片 有权

空冷汽轮机末级动叶片
摘要：
本发明涉及一种空冷汽轮机末级动叶片，特征是叶片有效高度为661mm，叶高Ld的相对值由0.0单调增加到1.0，安装角c1由85.13°单调减小到20.03°；从根截面到顶截面的面积AI变化规律为：3.82≥AI≥1.0，从根截面到顶截面的轴向宽度Xa变化规律为：4.749≥Xa≥1.0，从根截面到顶截面的弦长b1变化规律为：1.627≥b1≥1.0，从根截面到顶截面的最大厚度W1变化规律为：1.748≥W1≥1.0。本发明适用于功率300MW～600MW，转速3000rpm的亚临界、超临界空冷汽轮机。
摘要（英）：

The invention relates to a last-stage moving blade for an air-cooled steam turbine. The last-stage moving blade is characterized in that the effective height of the blade is 661 millimeters; the relative value of the height Ld of the blade is monotonically increased from 0.0 to 1.0; the mounting angle c1 is monotonically decreased from 85.13 to 20.03 degrees; the area AI from the root section to the top section has the following change rule that the AI is more than or equal to 1.0 and less than or equal to 3.82; the axial width Xa from the root section to the top section has the following change law that the Xa is more than or equal to 1.0 and less than 1.0 or equal to 4.749; the chord length b1 from the root section to the top section has the following change law that the b1 is more than or equal to 1.0 and less than or equal to 1.627; and the largest depth W1 from the root section to the top section has the following change law that the W1 is more than or equal to 1.0 and less than or equal to 1.748. The last-stage moving blade is suitable for an undercritical and supercritical air-cooled steam turbine with the power of between 300 and 600 MW and the rotational speed of 3, 000 rpm.

公开/授权文献
0/0