Turbine vane
In a turbine vane and a gas turbine, an outer shroud is fixed to one end of a vane body formed in a hollow shape, an inner shroud is fixed to the other end thereof, and a partition plate is fixed to the inner portions of the vane body, the outer shroud, and the inner shroud, so that a cavity is formed so as to be continuous between the partition plate and the group of the vane body, the outer shroud, and the inner shroud. Then, the vane body, the outer shroud, and the inner shroud are provided with a plurality of cooling holes, and the partition plate is provided with a plurality of penetration holes. Accordingly, since the vane structure or the end wall structure is evenly cooled, a deformation or damage may be suppressed.
1. A turbine vane comprising:
a vane structure formed in a hollow shape;
an end wall structure provided in an end of the vane structure; and
a partition plate including a body portion which corresponds to the vane structure, an end portion which corresponds to the end wall structure, and a curved portion, which extends from the body portion to the end portion, is provided between the body portion and the end portion, wherein
the end portion of the partition plate is arranged such that a direction normal to the end portion of the partition plate is along a radial direction with respect to an axis of rotation of a rotor;
the partition plate is provided to form a continuous cavity inside the vane structure and the end wall structure,
the body portion, the end portion and the curved portion of the partition plate are provided with a plurality of penetration holes, and
wherein the partition plate is disposed so as to have an equal gap between the end portion of the partition plate and an inner wall surface of the end wall structure.
2. The turbine vane according to claim 1 , wherein the partition plate forms a cylindrical shape in a longitudinal sectional view, the partition plate having an enlarged portion near the end wall structure and an end of the partition plate being fixed to the end wall structure.
3. The turbine vane according to claim 1 , wherein a protrusion is provided between the vane structure and the partition plate or between the end wall structure and the partition plate so as to suppress the gap therebetween from being narrowed.
4. The turbine vane according to claim 1 , wherein the end wall structure includes an outer end wall structure connected to one end of the vane structure and an inner end wall structure connected to the other end of the vane structure, and the partition plate includes an outer partition plate inserted from the outer end wall structure and an inner partition plate inserted from the inner end wall structure.
5. The turbine vane according to claim 4 , wherein the outer partition plate and the inner partition plate are formed so that base ends thereof are fixed to the outer end wall structure and the inner end wall structure and leading ends of the outer partition plate and the inner partition plate are bonded to each other.
6. The turbine vane according to claim 4 , wherein the outer partition plate and the inner partition plate are formed so that the base ends are fixed to the outer end wall structure and the inner end wall structure respectively and a leading end of the outer partition plate and a leading end of the inner partition plate being disposed inside the vane structure with a predetermined gap therebetween.
7. The turbine vane according to claim 5 , wherein a combustion gas path is provided outside the vane structure and the end wall structure, and the outer partition plate and the inner partition plate are disposed so that the leading ends avoid a portion with the highest combustion gas temperature of a vane body in a length direction.
8. The turbine vane according to claim 6 , wherein a combustion gas path is provided outside the vane structure and the end wall structure, and the outer partition plate and the inner partition plate are disposed so that the leading ends avoid a portion with the highest combustion gas temperature of a vane body in a length direction.