公开(公告)号：KR101317443B1

公开(公告)日：2013-10-10

申请号：KR1020120112364

申请日：2012-10-10

Applicant: 한국항공대학교산학협력단

Inventor： 곽재수 ,  최은영 ,  박정신

IPC: F01D5/18 ,  F02C7/12 ,  F01D25/12

CPC classification number: F01D5/187 ,  F01D5/147 ,  F01D25/12 ,  F02C7/12 ,  F05D2220/32 ,  F05D2260/20

Abstract: PURPOSE: A cooling blade of a gas turbine is provided to increase a heat transfer efficient by strengthening secondary flow by a lib because cold air flows into the inside by leaning to one side, by slantly installing multiple libs in an inner flow path and installing a structure on an inlet of the inner flow path. CONSTITUTION: A cooling blade of a gas turbine includes an airfoil (20) and an inner flow path (30). In the inner flow path of the airfoil, multiple libs (31) are slantly installed. On an inlet of the inner flow path, a structure (32) is installed to disturb the flow of cold air which flows into through an inlet port (11a). The structure is formed as multiple pins which are installed to make one side of the inlet of the inner flow path have higher density than the other side, or as a rectangular block shape which is installed to lean to one side of the inlet of the inner flow path, in order to make the inlet flow lean to one side. The inlet flow which leans to one side strengthens secondary flow by the libs in order to increase a heat transfer coefficient.

Abstract translation: 目的：提供一种燃气轮机的冷却叶片，通过加强二次流动来提高传热效率，因为冷空气通过倾斜到一侧而流入内部，通过在内部流动路径中倾斜地安装多个库，并安装 在内部流路的入口处的结构。 构成：燃气轮机的冷却叶片包括翼型件（20）和内部流动路径（30）。 在翼型件的内部流动路径中，多个库（31）倾斜地安装。 在内部流路的入口处，安装有结构（32），以扰乱通过入口（11a）流入的冷空气流。 该结构形成为多个销，其安装成使得内部流路的入口的一侧具有比另一侧更高的密度，或者形成矩形块状，该矩形块形状安装成倾斜到内侧流入口的一侧 流动路径，以使入口流动倾斜到一侧。 倾斜到一侧的入口流增强了二次流动，以增加传热系数。