BLADE WITH STRESS-REDUCING BULBOUS PROJECTION AT TURN OPENING OF COOLANT PASSAGES

• Main Authors: ELISABETH KRAUS BLACK, JACOB CHARLES PERRY, II, GREGORY THOMAS FOSTER, BRENDON JAMES LEARY, MICHELLE JESSICA IDUATE
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2017
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

A blade includes an airfoil defined by a pressure side outer wall and a suction side outer wall connecting along leading and trailing edges and forming a radially extending coolant receiving chamber. A rib partitions the radially extending chamber into a first passage on a first side of the rib and an adjacent second passage on an opposing second side of the rib. Each passage is enclosed at an end of the radially extending chamber by an end member of the radially extending chamber. A turn opening is defined in an end of the rib through which the coolant passes between the first passage and the second passage within the end member of the radially extending chamber. A bulbous projection extends along the end of the rib and on opposing radially extending sides of the turn opening to reduce stress in the rib and/or connecting fillets. 本发明涉及种叶片，其包括翼型件(25)，所述翼型件由压力侧外壁和吸力侧外壁限定，所述压力侧外壁和吸力侧外壁沿着前缘和后缘连接，并且形成径向延伸的冷却剂接纳腔室。肋部将径向延伸的腔室分隔成处于肋部的第侧上的第通道和处于肋部的相对的第二侧上的相邻的第二通道。每个通道在径向延伸的腔室的端部处由径向延伸的腔室的端部构件封闭。转弯部开口限定在肋部的端部中，冷却剂经由所述