Ion sensors formed with coatings

The invention provides an ion sensor for use in a fuel nozzle of a gas turbine combustor and other combustor surfaces that uses thin-film coatings to form both the dielectric and electrode layer of the ion sensor and methods to provide an electrical connection to the electrode layer. The dielectric...

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Bibliographic Details
Main Author BENSON KELLY J.,VANDYNE ED,RILEY PATRICK
Format Patent
LanguageEnglish
Published 18.10.2006
Subjects
BLASTING
CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES
COMBUSTION APPARATUS
COMBUSTION PROCESSES
DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR
DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS
HEATING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LIGHTING
MEASURING
MECHANICAL ENGINEERING
PHYSICS
SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS
TESTING
WEAPONS
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Summary:The invention provides an ion sensor for use in a fuel nozzle of a gas turbine combustor and other combustor surfaces that uses thin-film coatings to form both the dielectric and electrode layer of the ion sensor and methods to provide an electrical connection to the electrode layer. The dielectric layer electrically insulates the sensor from the combustor surface, which is typically grounded. The electrode layer, typically a metallic material capable of withstanding high temperatures in the combustion environment without delamination from the dielectric layer, is applied over the dielectric layer and forms the ion-sensing electrode. A wire protrudes through the dielectric layer to connect to the electrode layer and provides for the ion-sensing electrode to be controlled outside of the combustion zone (e.g., to a control module for signal processing).
Bibliography:Application Number: CN200610071200