公开(公告)号：US06056508A

公开(公告)日：2000-05-02

申请号：US111778

申请日：1998-07-08

Applicant: Bruce Johnson ,  Pey-Shey Wu ,  Bernhard Weigand ,  Prith Harasgama

Inventor： Bruce Johnson ,  Pey-Shey Wu ,  Bernhard Weigand ,  Prith Harasgama

IPC: F01D5/18 ,  F01D9/02

CPC classification number: F01D5/187 ,  F05D2260/2212 ,  F05D2260/22141

Abstract: In a cooling system for the trailing edge region of a hollow gas turbine blade, there extends from the blade root (1) to the blade tip (2) a duct (3) through which the flow passes longitudinally and which, in the region of the blade body (4), is delimited by the inner walls of the trailing edge (5), the suction side (6) and the pressure side (7) and by a web (9), the inner walls of the suction side and of the pressure side being provided with a plurality of ribs (8) running at least approximately parallel. The ribs (8) run obliquely from the web (9) in the direction of the trailing edge (5) and are directed radially outward on at least one of the two inner walls. The suction-side ribs and the pressure-side ribs are offset relative to one another over the blade height. The ratio of the height (h) of the ribs (8) to the local height (H) of the duct (4) is constant over the longitudinal extent of the ribs.

Abstract translation: 在用于中空燃气涡轮叶片的后缘区域的冷却系统中，从叶片根部（1）延伸到叶片尖端（2），管道（3），流体沿纵向延伸通过该管道（3） 叶片体（4）由后缘（5），吸力侧（6）和压力侧（7）的内壁和腹板（9），吸力侧的内壁和 的压力侧设置有至少大致平行的多个肋（8）。 肋（8）沿着后缘（5）的方向从腹板（9）倾斜延伸并且在两个内壁中的至少一个上径向向外指向。 吸力侧肋和压力侧肋在叶片高度上相对于彼此偏移。 肋（8）的高度（h）与管道（4）的局部高度（H）的比例在肋的纵向范围内是恒定的。