Radially removable turbine vanes

Details Radially removable turbine vanes Radially removable turbine vanes

1977-01-17

1978-10-10

Croyle, Carlton R.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

416215, 416222, F01D 904

Patent

active

041193890

ABSTRACT:
A gas turbine engine has a turbine vane case, an outer combustion case and inner vane case along with an air seal located in circumferential surrounding relationship to a circumferential row of stator vanes defining a turbine nozzle assembly upstream of a high pressure turbine stage. Individual stator vanes can be replaced without removing the high pressure turbine stage by configuring an index vane to be removably secured to an inner support band by means of a spring loaded pin and configuring each of the remaining vanes in the vane row to have a side slotted base secured to the inner band and removable therefrom by rotation of each of the individual vanes in a direction opposite to the tangential gas load thereon.

REFERENCES:
patent: 3053504 (1962-09-01), Shelley
patent: 3954350 (1976-05-01), Zahring
patent: 3955898 (1976-05-01), Zaehring

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