Abstract
This paper focuses on assessing the thermal state of a marine gas turbine plant (MGTP), with particular attention being given to the measurement of turbine rotor component temperatures using a specially developed telemetric measurement system (TMS). The study was conducted within the framework of research aimed at evaluating the effects of reduced relative air temperature, which is supplied by the high-pressure compressor (HPC) through nozzle guide vanes (NGV) and a twisting grid (TG) inside the rotor blades (RB) of a high-pressure turbine (HPT), on the thermal state of the HPT rotor. This temperature reduction is achieved via a pre-swirl technique, in which the cooling air is directed toward rotor rotation. The results obtained demonstrate new opportunities for monitoring the thermal condition of turbine components during the modernisation of MGTPs. This approach contributes to improving the overall efficiency of the system by enabling an increase in the gas flow temperature at the inlet to the HPT’s first stage.