| 主权项 |
1. A turbine blade comprising
an airfoil, said airfoil comprising a leading edge and a trailing edge, said edges being spaced apart in a chord-wise direction and each of said edges extending in a span-wise direction from a root end of said airfoil to a tip end of said airfoil, and said edges being interconnected through a suction-side wall and a pressure-side wall, wherein between said suction-side wall and said pressure-side wall, said airfoil comprises: at least one supply chamber configured for receiving a cooling fluid from a cooling fluid source external to said turbine blade and supplying said cooling fluid to one or more cavities within said airfoil, at least one impingement cavity connected to said at least one supply chamber through a plurality of impingement channels, said impingement channels directing said cooling fluid from said supply chamber to said impingement cavity, and a collector cavity connected to said impingement cavity through one or more collector channels, said collector channels directing said cooling fluid from said impingement cavity to said collector, wherein at least a portion of said supply chamber extends parallel to one of said walls and is coupled thereto in a spaced apart relationship for defining there between said impingement cavity, whereby said impingement cavity extends parallel to said wall, and wherein said impingement channels direct said cooling fluid from said supply chamber to said impingement cavity such that jets of cooling fluid impinge upon an inner surface of said wall for effecting impingement cooling thereof, wherein said collector channels extend through said supply chamber before joining into said collector cavity. |
