Measuring device for measuring the temperature of a thermally loaded metallic base element, provided with a protective surface coating, and method for producing such a measuring device
AssigneeALSTOM Technology Ltd
InventorsMatthias Thomas Boese, Thomas Duda
Life of this patent
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Abstract
A measuring device for measuring the temperature of a thermally loaded metallic base element, especially a gas turbine component, provided with a protective surface coating includes a sensor integrated in the base element. The sensor is arranged in a recess introduced into the base element from the outside. The protective surface coating is formed continuously over the sensor disposed in the recess.
Claims16
A measuring device for measuring the temperature of a thermally loaded metallic base element having a protective surface coating, the measuring device comprising:
- a sensor integrated in the base element and being disposed in a recess extending into the base element from an outside of the base element, wherein the protective surface coating is formed continuously over both the base element and the recess, wherein the sensor is a thermocouple, wherein the thermocouple is embedded in one of a braze and a modified wettable powder filling the recess such that the base element has a continuously planar surface in the region of the recess, and wherein the braze or modified wettable powder surrounds the thermocouple on all sides so as to thermally couple the thermocouple closely to the base element and to fix the thermocouple in the recess.
A method for producing a measuring device for measuring the temperature of a thermally loaded metallic base element, the method comprising:
- providing a base element having a recess introduced from an outside of the base element;
- introducing a sensor into the recess;
- filling the recess, with the sensor disposed inside it, such that the base element has a continuous outside surface in a region of the recess;
- and
- applying a protective surface coating to the base element such that the region with the sensor is covered, wherein the protective surface coating is formed continuously over both the base element and the recess, and wherein the filling of the recess includes filling the recess with at least one of a braze and a modified wettable powder such that the braze or modified wettable powder surrounds the sensor on all sides so as to thermally couple the sensor closely to the base element and to fix the sensor in the recess.
A method for producing a measuring device for measuring the temperature of a thermally loaded metallic base element, the method comprising:
- providing a base element, coated with a first metallic partial layer and having a recess introduced from an outside of the base element;
- introducing a sensor into the recess;
- filling the recess, with the sensor disposed in it, such that the base element has a continuous surface in a region of the recess;
- applying further layers of a protective surface coating to the base element so as to cover the region with the sensor, wherein the filling of the recess includes filling the recess with at least one of a braze and a modified wettable powder such that the braze or modified wettable powder surrounds the sensor on all sides so as to thermally couple the sensor closely to the base element and to fix the sensor in the recess.
Dependencies are inferred from the claim text.