초록 ▼

In a method for reliably removing liquid fuel from the fuel system of a gas turbine after shutting down the same, in the case of which fuel system liquid fuel is fed via at least a first feeder line in normal operation of the gas turbine to a burner and injected there into a combustion chamber via f

In a method for reliably removing liquid fuel from the fuel system of a gas turbine after shutting down the same, in the case of which fuel system liquid fuel is fed via at least a first feeder line in normal operation of the gas turbine to a burner and injected there into a combustion chamber via fuel nozzles, a high reliability against explosion and coking is achieved in a simple way by virtue of the fact that the liquid fuel is flushed from the fuel system by the use of an inert auxiliary medium.

대표청구항 ▼

[ What is claimed is:] [3.]3. A method for removing liquid fuel from the fuel system of a gas turbine having a combustion chamber with at least one burner with fuel nozzles while shutting down the gas turbine, the method comprising:conducting the liquid fuel through a fuel supply line to the burner

[ What is claimed is:] [3.]3. A method for removing liquid fuel from the fuel system of a gas turbine having a combustion chamber with at least one burner with fuel nozzles while shutting down the gas turbine, the method comprising:conducting the liquid fuel through a fuel supply line to the burner nozzles of a gas turbine during operation of the gas turbine;interrupting the flow of the liquid fuel to the burner through the fuel supply line, wherein the interrupting occurs in the fuel supply line at an interrupt point, spaced from the burner, and wherein an inert medium is fed into the fuel supply line at a feed-in point located between the interrupt point and the burner;flushing the supply line with the inert medium;collecting the liquid fuel and the inert medium;flushing the liquid fuel located in the fuel supply line between the feed-in point and the fuel nozzles into the combustion chamber through the fuel nozzles by means of the inert medium fed in at the feed-in point;flushing liquid fuel which is located in the fuel supply line between the feed-in point and the interrupt point, and discharging through a separate outlet by means of the inert medium fed in at the feed-in point;emptying a larger portion of the liquid fuel into the combustion chamber in a first low-pressure flushing operation;displacing the liquid fuel with the inert medium from relevant lines and only residual amounts of the liquid fuel remaining;removing remaining residual amounts of the liquid fuel in a second high-pressure flushing operation; anddefining a flow rate of the inert medium used in each case for the low-pressure flushing operation and the high-pressure flushing operation.