초록 ▼

A turbine rotor blade with a single tip rail on the suction side of the blade tip, and in which the pressure side tip edge includes a row of trench film slots that each having side walls that are open on the pressure side wall and extend onto the tip floor and have side walls with a curvature toward

A turbine rotor blade with a single tip rail on the suction side of the blade tip, and in which the pressure side tip edge includes a row of trench film slots that each having side walls that are open on the pressure side wall and extend onto the tip floor and have side walls with a curvature toward the trailing edge of the blade tip. The trench film slots also have a curved inboard surface and a curved outboard surface in which the inboard surface curvature is less than the outboard surface curvature. The tip rail includes a slot opening onto the top surface and extending the length of the tip rail with a row of metering and cooling holes opening into the slot. The metering and cooling holes have a curvature toward the pressure side edge of the tip floor to increase a heat transfer rate form the metal.

대표청구항 ▼

I claim the following: 1. A turbine rotor blade comprising:an airfoil with an internal cooling air supply channel;the airfoil having a pressure side wall and a tip floor forming a pressure side tip edge;a row of trench film slots opening onto the pressure side tip edge;the trench film slots extendin

I claim the following: 1. A turbine rotor blade comprising:an airfoil with an internal cooling air supply channel;the airfoil having a pressure side wall and a tip floor forming a pressure side tip edge;a row of trench film slots opening onto the pressure side tip edge;the trench film slots extending along the pressure side wall and onto the tip floor;the row of trench film slots each having two side walls that curve in a direction of a trailing edge of the airfoil; and,each trench film slot including an inlet metering hole connected to the internal cooling air supply channel.