Method and apparatus for detecting a flashback condition in a gas turbine

摘要

A method and apparatus for detecting a flashback condition in a fuel nozzle ( 8 ) of a gas turbine ( 10 ) are provided. The fuel nozzle is configured to pass a flow of air ( 20 ) to be mixed with a fuel in a premixing zone ( 11 ). The apparatus includes at least one fuel injecting device ( 12 ) positioned to define a point of fuel injection in the premixing zone. The apparatus further includes an electrode ( 16 ) positioned upstream of the point of fuel injection. The electrode is adapted to sense a flashback condition that can occur in the premixing zone.