Radraumströmungsvisualisierung with pressure- or temperature-sensitive color.

摘要

A method of measuring local temperature deviations at an interface between the hot combustion gases in a hot gas path of a turbine and a cooler purge air in a Turbinenrotorradraum includes the step of applying a pressure or temperature sensitive ink (64, 66, 68) on a rotatable turbine component where the hot combustion gas interacts with the scavenging air; the step of arrangement of a lighting apparatus (70, 72, 74) and at least one image detection means (76, 78, 80) on a stationary component that is arranged directly on the pressure-sensitive paint; and during operation of the turbine comprises the step of the visual recording of color changes in the pressure sensitive ink, which is caused by local variations in oxygen partial pressure, which varies with temperature.