ApplicationNo. 642739 filed on 01/17/1991
US Classes:415/170.1, BEARING, SEAL, OR LINER BETWEEN RUNNER PORTION AND STATIC PART277/641, Groove structure on the seal or part277/930, SEAL INCLUDING HEATING OR COOLING FEATURE415/134INCLUDING THERMAL EXPANSION JOINT
ExaminersPrimary: Kwon, John T.
Attorney, Agent or Firm
International ClassF01D 005/20
AbstractA three-piece seal assembly is disclosed for sealing cooling air leakage between circumferentially spaced-apart flowpath segments in gas turbine engines. First and second seals are disposed in oppositely facing slots on adjacent flowpath segments, and extend between adjacent flowpath segments to restrict cooling flow between the segments. A third seal member having first and second leg portions in abutting engagement with the first and second seals restricts leakage flow between the gap between the first and second seals.
Field of SearchWITH PASSAGE IN BLADE, VANE, SHAFT OR ROTARY DISTRIBUTOR COMMUNICATING WITH WORKING FLUID
WITH DIVERSELY ORIENTED INLET OR ADDITIONAL INLET FOR DIVERSE FLUID (E.G., HEATING, COOLING OR MIXED WORKING FLUID, ETC.)
BEARING, SEAL, OR LINER BETWEEN RUNNER PORTION AND STATIC PART
INCLUDING THERMAL EXPANSION JOINT
Stator vane in shroud ring opening
And axial or circumferential expansion
Circumferentially spaced nozzle or stator segments