High solidity and low entrance angle impellers on turbine rotor disk

摘要

According to an embodiment disclosed herein, an apparatus for cooling a rotating part having cooling channels therein, the rotating part attaching to a disk rotating about an axis, the disk having a conduit for feeding a cooling fluid to the cooling channel is described. The apparatus has a first impeller rotating with the disk and in register with the conduit and an outer periphery of the disk, the impeller directing the cooling flow to the conduit.

主权项

1. An apparatus for cooling a rotating part having a cooling channels therein, said rotating part attaching to a disk rotating about an axis, said disk having a conduit for feeding a cooling fluid to said cooling channel, said apparatus comprising:
a first impeller rotating with said disk and in register with said conduit and an outer periphery of said disk, said first impeller directing said cooling fluid to said conduit, wherein said first impeller has a radial portion and an extension, said radial portion and said extension form a J-shape; and a second impeller adjacent said first impeller, wherein said second impeller lacks an extension, wherein said radial portion and said second impeller each have a saddle disposed at a radially intermediate portion thereof, wherein said radial portion and said second impeller each have an upper peak and a lower peak, said saddles disposed radially between said upper and lower peaks, said saddles each having a dimension less than both said lower and upper peaks in a direction parallel to said axis.