公开(公告)号：WO1997021907A1

公开(公告)日：1997-06-19

申请号：PCT/EP1996005427

申请日：1996-12-05

Applicant: ABB PATENT GMBH ,  KÜFNER, Gustav ,  MÜLLER, Horst ,  BREINDL, Martin ,  SOKOL, Bernd ,  ZEISLER, Walter

Inventor： ABB PATENT GMBH

IPC: F01D05/28

CPC classification number: F01D5/286 ,  F05D2240/31 ,  F05D2250/183 ,  F05D2250/184 ,  F05D2250/294

Abstract: The invention relates to a turbine blade intended for use in the wet steam region in penultimate and final turbine stages. The blade is subjected to wear by erosion by impinging water droplets and is treated in the vicinity of the inlet edges and parts of the blade element (1) in such a way as to reduce that erosive wear. One particularly advantageous way of reducing the erosive wear of the water droplets lies in providing the blade element (1) in the vicinity of its inlet edge (2) and back, or at least in a partial region thereof, with a surface roughness (3) which is substantially reinforced compared to the surface roughness at the front of the blade element (1).

Abstract translation: 本发明涉及一种旨在用于在Vorend-和涡轮机和一个Erosionsverschleiss受试者的输出级的湿蒸汽的使用范围通过影响水滴和在叶片叶（1）的前缘和部件进行处理的涡轮叶片，使得在Erosionsverschleisses减少 结果。 以减少水滴的腐蚀作用的特别有利的方式是，所述叶片（1）具有在其前缘（2）和它的叶片的区域后面或在至少一个部分上的表面（3）的前侧的表面粗糙度的相对的 翼型件（1）被显著增强。