Alstom Technology Limited

Alstom (switzerland) Ltd

Michael Class

Robert Baumann

Marcus Gall

A flange () for optical flame observation in a gas turbine includes at least one bore for optical observation, in which bore there is arranged at least one pane () for separating the flame-side space, which is in substantially direct communication with a combustion chamber in which the at least one flame that is to be monitored is arranged, from the outside space, from which the observation of the at least one flame can take place. In a flange () of this type, fogging of the at least one pane () is made possible in a simple manner which can be guaranteed over a prolonged period of time by virtue of the fact that two panes (), which delimit a sealed intermediate space () in the bore for optical observation, are arranged one behind the other with respect to the optical axis (), and that a device () for dehumidifying the sealed intermediate space () is includes.

Flange for flame observation

In a method for the nondestructive quality testing of a thermocouple ( ) which can be used in particular at high temperatures and/or under high levels of vibration, which thermocouple ( ) comprises at least two wires ( ) which run substantially parallel to one another in one plane, are connected to one another at their ends by a welded joint ( ), are surrounded by a hermetically sealed sheath ( ) and inside the sheath ( ) are embedded in insulation ( ) comprising a compacted powder, simple and reliable assessment is achieved by the fact that the X-radiation is passed through the thermocouple ( ) perpendicular to the plane of the wires ( ) and an X-ray image is taken, that the position of the wires ( ) in the vicinity of the welded joint ( ) is determined from the X-ray image, and that the quality of the thermocouple ( ) is established from the position of the wires ( ) in the vicinity of the welded joint ( ).

Method for the nondestructive quality testing of a thermocouple which can be used in particular at high temperatures and/or under high levels of vibration

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Untersiggenthal, Switzerland

Michael Class