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US 8,740,224 B2Granted
Seal assembly for a turbomachine
AssigneeGeneral Electric Company
InventorsXiaoqing Zheng, Nathaniel Carmello Glinbizzi, Rodrigo Rodriguez Erdmenger, Norman Arnold Turnquist
Life of this patent
Estimating the term…
Abstract
A seal assembly for a turbomachine includes a seal ring rotatable between a first position and a second position and having a plurality of tunnels. Also included is a back ring located adjacent the seal ring and having a plurality of apertures that align with more of the plurality of tunnels of the seal ring when at the second position than at the first position. Further included is a retention piece operably connecting the seal ring and the back ring.
Claims15
A seal assembly for a turbomachine comprising:
- a seal ring rotatable between a first position and a second position, and having a plurality of tunnels;
- a back ring located adjacent the seal ring and having a plurality of apertures that align with more of the plurality of tunnels of the seal ring when at the second position than when at the first position;
- and
- a retention piece operably connecting the seal ring and the back ring, wherein the back ring is coupled to the retention piece via an anti-rotation component, the seal ring is coupled to the retention piece via a connection that allows the seal ring to rotate from the first position to the second position, the anti-rotation component including a securing pin, the securing pin operably coupling the back ring to the retention piece, the connection between the seal ring and the retention piece including a breakable slot the securing pin, the securing pin coupling the seal ring to the retention piece at the first position under normal operation.
1 more element
A seal assembly for a turbomachine comprising:
- a relatively circular seal face;
- a seal ring rotatable between a first position and a second position, and having a plurality of tunnels;
- a back ring located adjacent the seal ring and having a plurality of apertures;
- at least one of the plurality of tunnels is open to the relatively circular seal face at an end and covered by the back ring at another end when the seal ring is in the first position;
- and
- a retention piece operably connecting the seal ring and the back ring, wherein the seal ring is rotatable relative to the back ring, wherein the back ring is coupled to the retention piece via an anti-rotation component, the seal ring is coupled to the retention piece via a connection that allows the seal ring to rotate from the first position to the second position, the anti-rotation component including a securing pin, the securing pin operably coupling the back ring to the retention piece, the connection between the seal ring and the retention piece including a breakable slot the securing pin, the securing pin coupling the seal ring to the retention piece at the first position under normal operation.
3 more elements
A seal assembly for a turbomachine comprising:
- a relatively circular seal face;
- a seal ring rotatable between a first position and a second position, and having a plurality of tunnels;
- a back ring located adjacent the seal ring and having a plurality of apertures, wherein the back ring is configured to cover at least one of the plurality of tunnels when the seal ring is in the first position, at least one of the plurality of apertures uncovering a tunnel in the second position;
- and
- a retention piece operably connecting the seal ring and the back ring, wherein the seal ring is rotatable relative to the back ring, wherein the back ring is coupled to the retention piece via an anti-rotation component, the seal ring is coupled to the retention piece via a connection that allows the seal ring to rotate from the first position to the second position, the anti-rotation component including a securing pin, the securing pin operably coupling the back ring to the retention piece, the connection between the seal ring and the retention piece including a breakable slot the securing pin, the securing pin coupling the seal ring to the retention piece at the first position under normal operation.
2 more elements
Dependencies are inferred from the claim text.