Stator structure for supporting an outer air seal in a gas turbine engine

Patent · Tue Feb 17 04:00:00 EST 1987

OSTI ID:6720488

Laurello, V P

This patent describes an axial flow gas turbine engine of the type having an axis of rotation A, an annular flow path for working medium gases, a coolable outer case which extends circumferentially about the working medium flow path and a turbine section through which the working medium gases are passed. The turbine section includes an array of rotor blades extending outwardly across the working medium flow path, each rotor blade terminating in an axially oriented tip, and an outer air seal formed of an array of arcuate seal segments which extend circumferentially about the flow path and which are spaced radially from the tips of the rotor blades leaving a gap G therebetween. The improvement described here comprises: a stator structure for radially supporting and positioning the array of outer air seal segments which includes an upstream support ring formed of upstream support segments which engage the segments of the outer air seal, which are circumferentially slideable with respect to the outer air seal and which extend from the outer air seal to the outer case; a downstream support ring formed of downstream support segments which engage the outer air seal, which are circumferentially slideable with respect to the outer air seal and which extend from the outer air seal to the outer case; and means for attaching the upstream support segments and the plurality of downstream support segments to the outer case at one axial location.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4643638
• OSTI ID: 6720488
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
AIR FLOW
COOLING
ENGINES
FLUID FLOW
GAS FLOW
GAS TURBINE ENGINES
GAS TURBINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
MOTION
ROTATION
ROTORS
SEALS
SPACE DEPENDENCE
STATORS
TURBINE BLADES
TURBINES
TURBOMACHINERY