Patent · US Active

Seal assembly for a rotor shaft of a gas turbine

US12241372B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

General Electric Company · US

Inventors

Grant Robert Portune · Cincinnati, US
Steven Douglas Johnson · Milford, US
Bryan Jung Woo Hong · Blue Ash, US
Prateek Jalan · Bengaluru, IN
Ravindra Shankar Ganiger · Kanchinakote, IN
Narendra Anand Hardikar · Kanchinakote, IN
David Raju Yamarthi · Bengaluru, IN

Key dates

Filing date	Oct 30, 2023
Grant date	Mar 4, 2025
Priority date	—
Expiry date	Oct 30, 2043

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2240/55
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A seal assembly for a gas turbine includes a seal case, and a seal shoe arranged within the seal case. The seal shoe includes a main seal portion that is configured to engage with a radial bearing engagement portion of a rotor shaft, a radial bearing surface that engages with the radial bearing engagement portion of the rotor shaft, at least one hydrodynamic lift cavity extending through the radial bearing surface, and at least one airflow passage extending from a first side of the seal shoe through the at least one hydrodynamic lift cavity and providing airflow communication between the first side of the seal shoe and the at least one hydrodynamic lift cavity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.