Title: Device for regulating turbine blade tip clearance

Abstract: A device for automatically regulating the clearance between the tips of the otor blades of a turbine, particularly of a gas turbine, and the adjacent wall of a turbine stator, comprising means for directing a gaseous flow against the said wall to regulate its temperature. This gaseous flow is obtained from a proportioner including at least two inlet passages connected to sources of gas at different temperatures and controlled by the thermal expansion of an obturator responsive to the temperature of fluid passing through the turbine, so as to reduce the temperature of the said gaseous flow as the obturator expands, in order to cool the stator in stable conditions and to heat it in transitory conditions.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Hallinger, Claude Christian (L'Hay-les-Roses, FR)
Kervistin, Robert (Melun, FR)

Application Number: 598113
Filing Date: 1975-07-22
Publication_date: 1976-08-24
Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation (Paris, FR)
Primary Class(es): 60/786 415/115, 415/117
Other Classes:
US Patent Ref:

3169366	Feb, 1965	Clark et al.	415/116.
3583824	Jun, 1971	Smuland et al.	60/39.
3584458	Jun, 1971	Wetzler	60/39.
3736069	May, 1973	Beam et al.	60/39.

Other Refs:
Primary Examiner: Croyle, Carlton R.
Assistant Examiner: Garrett, Robert E.
Attorney: Watson, Cole, Grindle & Watson