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Wireless telemetry for instrumented component

  • US 8,519,866 B2
  • Filed: 11/08/2007
  • Issued: 08/27/2013
  • Est. Priority Date: 11/08/2007
  • Status: Expired due to Fees
First Claim
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1. A telemetry system for use in a combustion turbine engine having a compressor, a combustor and a turbine, the telemetry system comprising:

  • a sensor in connection with a turbine blade;

    a telemetry transmitter circuit affixed to the turbine blade;

    a first connecting material deposited on the turbine blade for routing electronic data signals from the sensor to the telemetry transmitter circuit, the electronic data signals indicative of a condition of the turbine blade;

    an induction power system for powering the telemetry transmitter circuit;

    a rotating data antenna affixed to an end face of a root of the turbine blade;

    a second connecting material deposited on the turbine blade for routing electronic data signals from the telemetry transmitter circuit to the rotating data antenna;

    a stationary data antenna affixed to a static seal segment adjacent the turbine blade,wherein the telemetry transmitter circuit is contained within a telemetry transmitter assembly comprising;

    a mounting bracket having a first thermal expansion coefficient that is substantially the same as a thermal expansion coefficient of the turbine blade;

    an electronics package having a second thermal expansion coefficient different from the first thermal expansion coefficient, the telemetry transmitter circuit contained within the electronics package;

    retention screws to affix a cover plate to the telemetry transmitter assembly, the cover plate having a flange arranged to relieve the retention screws from solely carrying G-forces exerted on the cover plate when the turbine blade rotates; and

    a planar layer of ceramic fiber woven fabric disposed between the electronics package and an inside surface of the mounting bracket to accommodate a dimensional change differential that can occur between the electronics package and the mounting bracket due to the different first and second thermal expansion coefficients.

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