Steam turbine drum nozzle having alignment feature, related assembly, steam turbine and storage medium
First Claim
1. A steam turbine drum nozzle comprising:
- an airfoil;
a radially inner sidewall coupled with a first end of the airfoil; and
a radially outer sidewall coupled with a second end of the airfoil, the second end opposing the first end, wherein the radially outer sidewall includes;
a first section radially outward of the airfoil;
a thinned section coupled with the first section; and
a second section coupled with the thinned section radially outward of the airfoil, the second section having a radially outer face and a circumferentially facing side abutting the radially outer face,wherein the second section includes a circumferentially extending slot,wherein the second section includes a relief slot extending into a body of the second section from the circumferentially facing side, andwherein the relief slot extends from an approximate axial midpoint on the circumferentially facing side to a location axially inboard of an axially facing surface of the second section.
2 Assignments
0 Petitions
Accused Products
Abstract
Various embodiments include a steam turbine drum nozzle, along with a related assembly and steam turbine. Particular embodiments include a nozzle having: an airfoil; a radially inner sidewall coupled with a first end of the airfoil; and a radially outer sidewall coupled with a second end of the airfoil, the second end opposing the first end, wherein the radially outer sidewall includes: a first section radially outward of the airfoil; a thinned section coupled with the first section; and a second section coupled with the thinned section radially outward of the airfoil, the second section having a radially outer face and a circumferentially facing side abutting the radially outer face, wherein the second section includes a circumferentially extending slot, and wherein the second section includes a relief slot extending into a body of the second section from the circumferentially facing side.
12 Citations
18 Claims
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1. A steam turbine drum nozzle comprising:
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an airfoil; a radially inner sidewall coupled with a first end of the airfoil; and a radially outer sidewall coupled with a second end of the airfoil, the second end opposing the first end, wherein the radially outer sidewall includes; a first section radially outward of the airfoil; a thinned section coupled with the first section; and a second section coupled with the thinned section radially outward of the airfoil, the second section having a radially outer face and a circumferentially facing side abutting the radially outer face, wherein the second section includes a circumferentially extending slot, wherein the second section includes a relief slot extending into a body of the second section from the circumferentially facing side, and wherein the relief slot extends from an approximate axial midpoint on the circumferentially facing side to a location axially inboard of an axially facing surface of the second section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A steam turbine comprising:
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a drum nozzle ring having a first circumferentially extending slot therein; and a plurality of drum nozzles aligned within the first circumferentially extending slot, at least one of the plurality of drum nozzles including; an airfoil; a radially inner sidewall coupled with a first end of the airfoil; and a radially outer sidewall coupled with a second end of the airfoil, the second end opposing the first end, wherein the radially outer sidewall includes; a first section radially outward of the airfoil; a thinned section coupled with the first section; and a second section coupled with the thinned section radially outward of the airfoil, the second section having a radially outer face and a circumferentially facing side abutting the radially outer face, wherein the second section includes a second circumferentially extending slot, wherein the second section includes a relief slot extending into a body of the second section from the circumferentially facing side, and wherein the relief slot extends from an approximate axial midpoint on the circumferentially facing side to a location axially inboard of an axially facing surface of the second section. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification