Flame detectors

During the ignition of the combustion chamber of a Gas Turbine Unit, оit is very important to know whether or not there is a flame in the combustion chamber. Flame detectors are designed to solve this very task. Data from the detectors are transmitted to the GTU control system. The sensors are installed on all flame tubes. The sensors also include an amplifier, which is installed directly in the  GTU control system.

The flame detector contains a gas inside its housing. The gas is highly sensitive to the presence of ultraviolet radiation emitted by the flame. A DC voltage is continuously applied to the amplifier. In the presence of a flame, intense ionization activates conduction in the electronic circuit, which in turn activates the electronics.

Conversely, if there is no flame, a corresponding signal is sent to the control system.

The response speed of ultraviolet sensors is 3-4 ms.

The entire sensor system is integrated in a single circuit. Signals from all sensors are fed to the turbine control system. In each system the order of GTU fuel shutdown in case of absence of flame is laid down in order to avoid the possibility of emergency situation occurrence.

Flame detectors are water cooled.