Abstract:
Arrangement (66, 112) for a gas turbine (10), comprising: a rotor disk portion (68) comprising an engaging section (70); a blade unit portion (72) comprising an engaging section (74), wherein the respective engaging sections (70, 74) are engaged to circumferentially and radially fix the rotor disk portion (68) and the blade unit portion (72) relative to each other; a locking plate (96) connected to the rotor disk portion and the blade unit portion such as to axially fix the blade unit portion with respect to the rotor disk portion, wherein the locking plate (96) is axially spaced apart by a spacing (D) from an axial end (98) of the engaging portions (70, 74) of the rotor disk portion (68) and/or the blade unit portion (70) leaving a void region (V) axially between the engaging portions (70, 74) and the locking plate (96).
Abstract:
The invention is related to a method for determining a fuel split setting value (101) utilisable for adjusting a fuel split setting for a combustion device (12), the fuel split setting defining a relation between main fuel (50) and pilot fuel (51). The invention is also directed to the correspond- ing control unit and the rotating machine for which this method is operated. The method comprises the steps of: retrieving a first information item correlated to a heating value of supplied main fuel (50); retrieving a second information item correlated to a combustor operating condition; retrieving at least one third information item representing stability of combustion in the combustion device (12); selecting a predefined pair of minimum and maximum boundary curves (100A, 100B;...) for the fuel split setting from a plurality of predefined pairs of boundary curves (100A, 100B;...) based on the first information item and the second information item, the minimum and maximum boundary curves (100A, 100B;...) defining a band of fuel split settings permitted for a range of second information item values; - determining the fuel split setting value (101) within the selected pair of minimum and maximum boundary curves (100A, 100B;...) based on the third information item, wherein the determined fuel split setting value (101) being utilisable for adjusting the fuel split setting for the combustion device (12).