Gas turbine vane and assembly in lattice-structure cooling type
Provided is a gas turbine vane and blade assembly in which lattice structures are installed between an impingement plate and an effusion plate. The gas turbine vane and blade assembly is capable of enhancing cooling efficiency in an impingement/effusion cooling technique. In addition, the gas turbine vane and blade assembly can be manufactured using an additive manufacturing technique, and the lattice structures are capable of replacing supports that are used during an additive manufacturing process, and improving not only structural rigidity and stability but also cooling performance.
1. A gas turbine vane and blade assembly in a lattice-structure cooling type, which is a vane and blade assembly applied to a gas turbine, the gas turbine vane and blade assembly comprising:
an impingement plate disposed on an inner side and having a plurality of injection holes arranged in a linear pattern;
an effusion plate disposed on an outer side and having a plurality of effusion holes arranged in a linear pattern that is offset from the plurality of injections holes, the impingement plate and the effusion plate forming a double partition wall having a cavity therein; and
a plurality of lattice structures positioned in the cavity to have a flow structure while supporting the impingement plate and the effusion plate, wherein the plurality of lattice structures are positioned between the plurality of injection holes and the plurality of effusion holes.
2. The gas turbine vane and blade assembly of claim 1 , wherein the injection holes of the impingement plate and the effusion holes of the effusion plate are arranged in a staggered manner not to face each other.
3. The gas turbine vane and blade assembly of claim 1 , wherein each of the lattice structures has a triangular pyramid structure in an additive manufacturing process.
4. The gas turbine vane and blade assembly of claim 1 , wherein each of the lattice structures has a quadrangular pyramid structure in an additive manufacturing process.
5. A method of manufacturing the gas turbine vane and blade assembly of claim 1 , the method comprising:
selecting a shape of the lattice structures; and
performing an additive manufacturing process using a metal 3D printer to manufacture the gas turbine vane and blade assembly in a double partition wall structure with the lattice structures inside.
6. The method of claim 5 , wherein in the performing of the additive manufacturing process, a build orientation in which the lattice structures are stacked is selectable.