Turbine rotor blade with super cooling

摘要

An air cooled turbine rotor blade with a leading edge region cooling circuit having pressure and suction side feed channels separated by a rib, where the feed channels are connected to metering and diffusion cooling channels formed in the pressure and suction side walls and the middle rib that discharge into three rows of exit slots on the leading edge of the blade. The trailing edge region cooling circuit includes rows of serpentine flow circuits each having an impingement channel along a suction side and a return channel in a middle that opens into metering and diffusion channels on the pressure side that discharges into exit slots on the pressure side of the trailing edge region. The middle of the blade is cooled with a multiple pass aft flowing serpentine flow circuit with metering and diffusion film cooling slots.

主权项

1. An air cooled turbine rotor blade comprising:
a leading edge region; a trailing edge region; a middle region with a pressure side wall and a suction side wall; the leading edge region having a pressure side feed channel and a suction side feed channel separated by a middle rib; a first row of exit slots opening on a surface of the leading edge region of the blade; a first row of cooling channels formed in a pressure side wall of the leading edge region and having inlets connected to the pressure side feed channel and outlets connected to a common exit slot in the first row of exit slots; a second row of exit slots opening on a surface of the leading edge region of the blade; a second row of cooling channels formed in the middle rib and having inlets connected to the pressure side feed channel and outlets connected to a common exit slot in the second row of exit slots; a third row of exit slots opening on a surface of the leading edge region of the blade; and, a third row of cooling channels formed in a suction side wall of the leading edge region and having inlets connected to the suction side feed channel and outlets connected to a common exit slot in the third row of exit slots.