Mechanical solution for rail retention of turbine nozzles

Details Mechanical solution for rail retention of turbine nozzles Mechanical solution for rail retention of turbine nozzles

2007-01-09

2007-01-09

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Including destructible, fusible, or deformable non-reusable...

C415S138000, C415S139000, C415S189000, C415S209200, C415S209400, C029S889220

Reexamination Certificate

active

10947450

ABSTRACT:
A mechanical arrangement for protection against catastrophic nozzle failures includes a turbine nozzle segment including an inner platform rail, a turbine nozzle inner support ring in part in axial registration with the rail on one side, an inner retainer segment secured to the inner support ring and in part in axially spaced registration relative to the rail on an axial side of the rail opposite from the support ring, a first inclined conical surface on the inner retainer segment, and a second inclined conical surface on the inner platform rail of the turbine nozzle, the second inclined conical surface opposing the first inclined conical surface, so as to bind the inner platform rail to the turbine nozzle between the inner retainer segment and the inner support ring, resulting in a wedge lock that prevents the inner platform from being lost downstream into rotating hardware of the turbine.

REFERENCES:
patent: 4720236 (1988-01-01), Stevens
patent: 5839878 (1998-11-01), Maier
patent: 6609885 (2003-08-01), Mohammed-Fakir et al.
patent: 2005/0111969 (2005-05-01), Arness et al.
patent: 2005/0244267 (2005-11-01), Coign et al.

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