Industrial stator vane with sequential impingement cooling inserts
AssigneeFlorida Turbine Technologies, Inc.
InventorsRussell B Jones, John A Fedock, Gloria E Goebel, Judson J Krueger, Christopher K Rawlings, Robert L Memmen
Life of this patent
Estimating the term…
Abstract
A turbine stator vane for an industrial engine, the vane having two impingement cooling inserts that produce a series of impingement cooling from the pressure side to the suction side of the vane walls. Each insert includes a spar with a row of alternating impingement cooling channels and return air channels extending in a radial direction. Impingement cooling plates cover the two sides of the insert and having rows of impingement cooling holes aligned with the impingement cooling channels and return air openings aligned with the return air channel.
Claims15
An industrial engine turbine stator vane comprising:
- an airfoil extending between an outer diameter endwall and an inner diameter endwall;
- a rib extending across the airfoil from a pressure side wall to a suction side wall and dividing the airfoil into a forward section and an aft section;
- a forward impingement cooling insert secured within the forward section of the airfoil;
- an aft impingement cooling insert secured within the aft section of the airfoil;
- the forward impingement cooling insert forming three impingement cooling zones with a first impingement cooling zone on the pressure side wall and the second and third impingement cooling zones on the suction side wall;
- the first and second and third impingement cooling zones are connected in series flow;
- the aft impingement cooling insert forming two impingement cooling zones with a fourth impingement cooling zone on the pressure side wall and the fifth impingement cooling zone on the suction side wall;
- the fourth and the fifth impingement cooling zones are connected in series flow;
- and,
- both impingement cooling inserts have an alternating series of impingement cooling holes and return air openings that produce impingement cooling and channel spent impingement cooling air to the next impingement cooling zone.
An impingement cooling insert for a turbine stator vane comprising:
- a spar having a pressure side and a suction side;
- a plurality of impingement cooling channels formed on the pressure side and the suction side;
- a plurality of return air channels formed on the pressure side and the suction side;
- the impingement cooling channels and the return air channels alternating from one to the other in a spanwise direction of the insert;
- a pressure side impingement plate with a plurality of rows of impingement cooling holes and a plurality of return air openings secured over the pressure side of the spar with the impingement cooling holes aligned with the impingement cooling channels and the return air openings aligned with the return air channels;
- a suction side impingement plate with a plurality of rows of impingement cooling holes secured over the suction side of the spar with the impingement cooling holes aligned with the impingement cooling channels;
- and,
- the pressure side return air channels are connected to the suction side impingement cooling channels.
Dependencies are inferred from the claim text.