Patent ID: 9121352
Filing Date: 2015-09-01
Classification: F02C,F05D,F23K,F23N,F23R

Abstract:
1. A device for purging a feed device that supplies liquid fuel to a gas turbine, comprising: a combustion chamber that can be supplied alternately with gaseous and liquid fuel; and a purge air circuit including a manifold able to distribute air to the combustion chamber, a first valve for regulating air pressure in the purge air circuit, and a second valve located between the first valve and the manifold, wherein the purge air circuit comprises an electronic control unit receiving information relating to a pressure between the first and second valves supplied by a first sensor located between the first valve and the manifold, and a pressure in the combustion chamber being supplied by a second sensor located in the combustion chamber downstream of an injector, the electronic control unit being configured to lengthen the purge time by controlling opening of the first and second valves according to the pressure measured in the purge air circuit and the combustion chamber.