公开(公告)号：US20110103970A1

公开(公告)日：2011-05-05

申请号：US12893761

申请日：2010-09-29

申请人： Rabiye BEKYIGIT ,  Philipp BRUNNER ,  Jian CHEN ,  Rolf DÖBLER ,  Jozo DRMIC ,  Andreas EHRSAM ,  Maurus HERZOG ,  Davor KRIZ ,  Thomas MOKULYS ,  Martin REIGL ,  Luca RIPAMONTI ,  Thomas SCHREIER ,  Giorgio ZANAZZI

发明人： Rabiye BEKYIGIT ,  Philipp BRUNNER ,  Jian CHEN ,  Rolf DÖBLER ,  Jozo DRMIC ,  Andreas EHRSAM ,  Maurus HERZOG ,  Davor KRIZ ,  Thomas MOKULYS ,  Martin REIGL ,  Luca RIPAMONTI ,  Thomas SCHREIER ,  Giorgio ZANAZZI

IPC分类号： F01D5/18

CPC分类号： F01D3/04 ,  F01D5/06 ,  F01D5/08 ,  F01D25/14

摘要： A steam turbine is provided having a relief groove which is arranged in the region of the equalizing piston and extends in the circumferential direction of the rotor. The relief groove, with regard to an inlet passage, is arranged in the axial upstream direction so that it is arranged on the rotor outside a region in which the steam flow enters the bladed flow path via the inlet passage. The relief groove, with regard to the first blade row, is arranged in a region in which the greatest thermal stresses can arise in the rotor. As an option, the relief groove has a cover for reducing vortex flows, and also devices for reducing heating of the groove or devices for active cooling. The steam turbine allows an increased number of risk-free running up and running down operations of the steam turbine with minimum detriment to the turbine performance.

摘要翻译： 一种蒸汽轮机，其具有设置在均压活塞的区域中并在转子的圆周方向上延伸的释放槽。 相对于入口通道的释放槽布置在轴向上游方向上，使得其在转子的外侧经由入口通道进入叶片流动路径的区域外部。 相对于第一叶片排，安全槽布置在转子中可能产生最大热应力的区域中。 作为一种选择，该释放槽具有用于减少涡流的盖，以及用于减少用于主动冷却的槽或装置的加热的装置。 蒸汽轮机允许蒸汽轮机的无风险运行和运行的次数增加，同时对涡轮机性能的影响最小。