Método de sustitución de una cubierta de un álabe de guía de una turbina de gas

摘要

The guide vane (1) of a gas turbine comprises a blade (2) having an outer platform (3) connectable to a guide vane carrier or gas turbine casing (4), and at the opposite end an inner platform (5) that carries a cover plate (7). The inner platform (5) has a dovetail housing (13) to which the cover plate (7) is connected. The method for replacing the cover plate (7) consists in separating the cover plate (7) from the inner platform (5) by cutting along the profile of the dovetail housing (13), then making the cover plate (7) to slide out of the dovetail housing (13), thus inserting a new or refurbished cover plate (7) into the dovetail housing (13).