APPARATUS FOR REFURBISHING A GAS TURBINE NOZZLE

摘要

A gas turbine nozzle can be refurbished to reduce downstream deflection. The outer shroud of the gas turbine nozzle is held in a fixture, and then the nozzle is heated. The heated nozzle is then reshaped by a force exerted upon the inner shroud of the gas turbine, reducing the downstream deflection of the nozzle. After the deformation of the nozzle, an aft hook of the nozzle that has been adjusted by previous refurbishment efforts can be rebuilt to remove the previous adjustments.

主权项

1. An apparatus for refurbishing a gas turbine nozzle, comprising:
a mounting fixture, configured to hold an outer shroud of the nozzle; a hydraulic jack, positioned below an inner shroud of the nozzle, adapted to exert an upward force on the inner shroud; a heat source, disposed with the nozzle; and a plurality of thermocouples, positioned with the nozzle and adapted for monitoring the temperature of the nozzle.