EP 0115984 B1 19871028 - SEALING MEANS FOR ROTOR BLADES OF A GAS-TURBINE
Title (en)
SEALING MEANS FOR ROTOR BLADES OF A GAS-TURBINE
Publication
Application
Priority
FR 8301671 A 19830203
Abstract (en)
[origin: US4527385A] A sealing device is disclosed for maintaining a small positive clearance between the sealing sectors and the turbine blade tips of a turbojet engine. The sealing segments are connected to an internal ring structure and an external ring structure located within the casing of the jet engine. The two ring structures serve to expand and contract the diameter of the ring formed by the sealing segments in conjunction with the expansion and contraction of the turbine blades for stabilized and transient engine operating modes. The device utilizes ventilating air taken from a stage of the jet engine compressor to cause the radial expansion or contraction of the internal and external rings in direct conjunction with the conditions under which the engine is operating.
IPC 1-7
IPC 8 full level
F01D 11/10 (2006.01); F01D 11/18 (2006.01)
CPC (source: EP US)
F01D 11/18 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0115984 A1 19840815; EP 0115984 B1 19871028; DE 3467017 D1 19871203; FR 2540560 A1 19840810; FR 2540560 B1 19870612; JP H0377363 B2 19911210; JP S59147802 A 19840824; US 4527385 A 19850709
DOCDB simple family (application)
EP 84400155 A 19840125; DE 3467017 T 19840125; FR 8301671 A 19830203; JP 1815784 A 19840201; US 57531984 A 19840130