Turbine rotor blade with streamlined boss

The invention discloses a turbine rotor blade with a streamlined boss. The turbine rotor blade with the streamlined boss is characterized in that the boss 2 is arranged at the maximum thickness position of the blade under 10 percent of the relative blade height of the turbine rotor blade 1, is streamlined, and is tangent to an outer contour line of the turbine rotor blade 1; the length of the boss2 in the axial direction of the turbine rotor blade 1 is 15 to 30 percent of the axial chord length of the blade; and the thickness of the boss 2 in the radial direction of the turbine rotor blade 1is 0.2 percent to 1 percent of the relative blade height. The technical scheme provided by the invention is simple to implement, the influence on the strength of the blade is small, and the flow lossis low. 本发明公开了种带流线型凸台的涡轮转子叶片，其特征在于，在涡轮转子叶片1的10％相对叶高以下，在叶片的最大厚度位置，设置有个凸台2，凸台2为流线型，凸台2与涡轮转子叶片1的外轮廓线相切，凸台2在涡轮转子叶片1轴向方向上的长度为叶片轴向弦长的15-30％，凸台2在涡轮转子叶片1径向方向上的厚度为0.2％-1％的相对叶高。本发明技术方案实施简单，对叶片强度影响小；流动损失低。