Blade member and structural member
US-2024102389-A1 · Mar 28, 2024 · US
Turbine blade airfoil and tip shroud
US9828858B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9828858-B2 |
| Application number | US-201414890928-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2014 |
| Priority date | May 21, 2013 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A turbine blade airfoil ( 25, 31 R, 31 M, 31 T, 72 ) comprising an outer surface shape defined by Cartesian coordinates of successive transverse profiles at radial increments as set forth in Tables 1a to 1k, wherein each table defines a transverse sectional profile characterized by a smooth curve connecting the coordinates, and the surface shape comprises a smooth surface connecting the sectional profiles. The blade may include a tip shroud with edge profiles defined by Cartesian coordinates set forth in Table 2a and 2b. A gusset/fillet may be provided between the blade airfoil and the tip shroud, with a planar diagonal surface over most of a diagonal bracing area of the gusset/fillet.
First claim
Opening claim text (preview).
The invention claimed is: 1. A turbine blade airfoil comprising an outer surface shape defined by Cartesian coordinate values of X and Y at successive radial increments as set forth in Tables 1a to 1k, wherein each said table defines a transverse sectional profile characterized by a smooth curve connecting the X and Y coordinates, and the surface shape comprises a smooth surface connecting the sectional profiles. 2. The turbine blade airfoil of claim 1 , wherein the Cartesian coordinate values are absolute values in inches, and a manufacturing tolerance of the smooth surface is +/−0.050 inches measured normal to said surface. 3. The turbine blade airfoil of claim 1 , wherein the Cartesian coordinate values are relative values, and a manufacturing tolerance of the smooth surface is a relative value of +/−0.050 inches measured normal to said surface. 4. The turbine blade airfoil of claim 1 , further comprising a tip shroud comprising an axially forward edge profile defined by Cartesian coordinate values of X and Y set forth in Table 2a, and an axially aft edge profile defined by Cartesian coordinate values of X and Y set forth in table 2b. 5. The turbine blade airfoil of claim 4 , wherein the Cartesian coordinate values are absolute values in inches, and a manufacturing tolerance of the axially forward and aft profiles is +/−0.050 inches measured normal to said profiles. 6. The turbine blade airfoil of claim 4 , wherein the Cartesian coordinate values are relative values, and a manufacturing tolerance of the axially forward and aft profiles is a relative value of +/−0.050 inches measured normal to said profiles. 7. The turbine blade airfoil of claim 1 , further comprising a tip shroud on a tip of the blade airfoil, and a gusset/fillet between the blade airfoil the tip shroud, the gusset/fillet comprising a planar diagonal surface over most of a diagonal bracing area thereof, and two planar side facets, wherein the diagonal surface and side facets merge with the blade airfoil via a continuous fillet.
Assignees
Inventors
Classifications
given by a set or table of xyz-coordinates · CPC title
Cross-sectional characteristics · CPC title
- F01D5/141Primary
Shape, i.e. outer, aerodynamic form (F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147) · CPC title
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Frequently asked questions
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- What does patent US9828858B2 cover?
- A turbine blade airfoil ( 25, 31 R, 31 M, 31 T, 72 ) comprising an outer surface shape defined by Cartesian coordinates of successive transverse profiles at radial increments as set forth in Tables 1a to 1k, wherein each table defines a transverse sectional profile characterized by a smooth curve connecting the coordinates, and the surface shape comprises a smooth surface connecting the sect…
- Who is the assignee on this patent?
- Siemens Energy Inc
- What technology area does this patent fall under?
- Primary CPC classification F01D5/141. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).