Gas turbine vane cooling air insert
First Claim
1. A gas turbine comprising a plurality of turbine vanes, each of said vanes supplied with cooling air and having:
- a) an airfoil portion forming a first cavity having an insert disposed therein for directing the flow of said cooling air, said insert having first and second insert ends;
b) a shroud portion from which said airfoil portion extends, said insert attached to said shroud portion at said first insert end;
c) an insert extension extending through a portion of said insert and extending beyond said first insert end, said insert extension and said insert forming an annular gap therebetween separating said insert from said insert extension;
d) a plate covering at least a portion of said shroud, said plate having a first hole formed therein through which said insert extension extends; and
e) at least a first seal extending between said insert extension and said insert, and sealing said annular gap therebetween.
4 Assignments
0 Petitions
Accused Products
Abstract
A gas turbine stationary vane is provided having cooling air inserts and an inpingement plate attached to the outer shroud of the vane. The inserts extend only a short distance above their mounting surface on the outer shroud so that there is adequate access for properly welding the inserts to the outer shroud. Insert extensions are disposed in the end of each insert so as to form cooling air inlets which project above the impingement plate. The insert extensions are installed after the insert has been welded to the outer shroud so as to not interfere with access to the weld area. The insert extensions are attached to the inserts and the impingement plate by flexible seal collars, allowing the collars to form positive seals between the components.
41 Citations
17 Claims
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1. A gas turbine comprising a plurality of turbine vanes, each of said vanes supplied with cooling air and having:
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a) an airfoil portion forming a first cavity having an insert disposed therein for directing the flow of said cooling air, said insert having first and second insert ends; b) a shroud portion from which said airfoil portion extends, said insert attached to said shroud portion at said first insert end; c) an insert extension extending through a portion of said insert and extending beyond said first insert end, said insert extension and said insert forming an annular gap therebetween separating said insert from said insert extension; d) a plate covering at least a portion of said shroud, said plate having a first hole formed therein through which said insert extension extends; and e) at least a first seal extending between said insert extension and said insert, and sealing said annular gap therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A gas turbine comprising a plurality of turbine vanes, each of said vanes having:
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a) an airfoil portion; b) an outer shroud portion attached to said airfoil portion and having a radially outward facing surface and a radially outward projecting portion adjacent said surface; c) a first tubular insert disposed in said airfoil and attached to said outer shroud at said surface, said first tubular member projecting above said surface a first predetermined distance; and d) a second tubular insert having first and second distal ends and partially enclosed by said first tubular insert, said first distal end extending a second predetermined distance above said surface. - View Dependent Claims (11, 12, 13, 14)
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15. A method of making a gas turbine, comprising the steps of:
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a) welding a first tubular insert adjacent its first end to a vane outer shroud; b) partially inserting a second tubular insert into said first tubular member and attaching said second tubular insert thereto; c) placing a plate having a hole formed therein on said outer shroud so that said hole surrounds said second tubular insert; and d) attaching said second tubular insert to said plate by placing a first seal between said first and second tubular inserts and attaching said first seal to each of said first and second tubular inserts, and placing a second seal between said second tubular insert and said plate and welding said second seal to said second tubular insert and said plate. - View Dependent Claims (16, 17)
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Specification