GRUPPO BRUCIATORE PER UN IMPIANTO A TURBINA A GAS PER LA PRODUZIONE DI ENERGIA ELETTRICA, IMPIANTO A TURBINA A GAS PER LA PRODUZIONE DI ENERGIA ELETTRICA COMPRENDENTE DETTO GRUPPO BRUCIATORE E METODO PER OPERARE DETTO IMPIANTO A TURBINA A GAS

摘要

A burner unit for a combustor (4) of a gas turbine plant extends around a longitudinal axis (B) and comprises an internal burner (10) supplied with air and fuel, which extends around the longitudinal axis (B) and is provided with at least one internal swirler (28); an external burner (11) supplied with air and fuel, which extends around the internal burner (10) and is provided with at least one external swirler (45); an intermediate burner (12) supplied with air and fuel, which is arranged between the external burner (11) and the internal burner (10) around the internal burner (10) and is provided with an intermediate swirler (32); the outlet of the intermediate swirler (32) being arranged upstream of the outlet of the internal swirler (26) or aligned with the outlet of the internal swirler (26) along the supply direction (D1) of the air and the fuel directed towards the inside of the combustor (4).