Patent ID: 11859503
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F

Claim 7:
8. An aircraft power plant comprising:
a nacelle;
a gas turbine engine mounted in the nacelle, the gas turbine engine comprising:
a compressor;
a turbine drivingly connected to the compressor, the turbine housed in a turbine housing extending around a central axis, the turbine housing having a first probe boss;
an exhaust case for discharging combustion gases received from the turbine, the exhaust case surrounding the turbine housing and having a second probe boss aligned with the first probe boss;
a probe extending through the first and second probe bosses and into the turbine housing; and
a sleeve projecting from the first probe boss into the second probe boss, the sleeve circumscribing an annular cavity around the probe, the annular cavity closed at both a radially outer end and a radially inner end thereof, wherein the sleeve has a radially outer end having an annular inner shoulder in sealing engagement with a compression seal, the compression seal sealing the radially outer end and axially loading the sleeve against an annular outer shoulder projecting from the first probe boss.