Patch ring segment for a turbomachine compressor
AssigneeGeneral Electric Company
InventorsJohn David Memmer, Jeffrey Craig Moree
Life of this patent
Estimating the term…
Abstract
A turbomachine includes a compressor provided with a casing having an inner surface defining a flow path. At least one blade is rotatable within the flow path. The at least one blade includes a tip portion that is spaced from the inner surface. At least one patch ring segment is mounted to the inner surface of the casing. The at least one patch ring segment includes a body having a first end that extends to a second end through a surface portion. A first wall member extends from the first end and a second wall member extends from the second end. The first and second wall members include in-turned sections that define a C-shaped cross-section of the at least one patch ring segment.
Claims20
A turbomachine comprising:
- a compressor including a casing having an inner surface defining a flow path, and at least one blade rotatable within the flow path, the at least one blade having a tip portion that is spaced from the inner surface;
- and
- at least one patch ring segment mounted to the inner surface of the casing, the at least one patch ring segment including a body having a first end that extends to a second end through a surface portion, a first wall member extends from the first end and a second wall member extends from the second end, the first and second wall members including in-turned sections that define a C-shaped cross-section of the at least one patch ring segment.
A turbomachine comprising:
- a turbomachine component including a casing having an inner surface defining a flow path, and at least one blade rotatable within the flow path, the at least one blade having a tip portion that is spaced from the inner surface;
- and
- at least one patch ring segment mounted to the inner surface of the casing, the at least one patch ring segment including a body having a first end that extends to a second end through a surface portion, a first wall member extends from the first end and a second wall member extends from the second end, the first and second wall members including in-turned sections that define a C-shaped cross-section of the at least one patch ring segment.
A method of re-surfacing a flow path portion of a casing for a turbomachine component, the method comprising:
- removing a portion of a surface of the flow path portion of the turbomachine component;
- exposing first and second flange elements extending from the casing into the flow path, the first and second flange elements defining corresponding first and second grooves;
- positioning a patch ring segment having first and second wall members adjacent to the first and second flange elements, the first and second wall members including corresponding first and second in-turned sections that define a C-shaped cross-section;
- aligning the first and second in-turned sections with corresponding ones of the first and second grooves;
- and
- shifting the patch ring segment along the casing to provided a renewed surface section in the flow path.
Dependencies are inferred from the claim text.