WIRELESS TELEMETRY SYSTEM INCLUDING AN INDUCTION POWER SYSTEM

• US 20130342360A1
• Filed: 06/21/2012
• Published: 12/26/2013
• Est. Priority Date: 06/21/2012
• Status: Active Grant

• Current Assignee: Siemens Energy Incorporated (Siemens AG)
• Original Assignee: Alex J. Bevly III
• Inventors: Bevly, Alex J. III
• Granted Patent: US 9,325,388 B2
• Time in Patent Office: Days
• US Class Current: 340/870.07
• CPC Class Codes: F01D 17/02 Arrangement of sensing elements
• CPC Class Codes: F05D 2260/80 Diagnostics
• CPC Class Codes: F05D 2270/80 Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04Q 2209/886 using energy harvesting, e.g. solar, wind or mechanical
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

A telemetry system for use in a combustion turbine engine (10) comprising a sensor (428) in connection with a rotating component such as a turbine blade, and a telemetry transmitter circuit (418) affixed to the turbine blade and in electrical communication with the sensor (428) for routing electronic data signals from the sensor (428) to the telemetry transmitter circuit (418). An induction power system is provided to power the telemetry transmitter circuit (418) and includes a plurality of primary induction coil assemblies (400) each including a primary planar winding (410) formed on a respective ceramic substrates (404), which are mounted end to end on a static seal segment (323) of a stator (180). The induction power system also includes a secondary induction coil assembly (402) comprising a secondary planar winding (412) formed on a ceramic substrate (404), which is mounted to an end face of a turbine blade root (132).

Claims

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 on a turbine blade;

a telemetry transmitter circuit affixed to the turbine blade;

a first electrical connection 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 circuit comprising;

at least one stationary primary induction coil assembly affixed to a stationary component adjacent to the turbine blade; and

,

a rotating secondary induction coil assembly mounted to an end face of a root of the turbine blade;

wherein the stationary primary induction coil assembly comprises a plurality of ceramic substrates, including a first and last substrate, mounted to a static seal segment of the stationary component and the substrates are aligned end to end forming a continuous arc spanning a circumference of the static seal segment wherein on each substrate a planar winding is formed and the planar windings are electrically connected in series to adjacent planar windings on adjacent substrates, and an external power source is electrically connected to the planar winding of the first substrate and to the planar winding of the last substrate in the series;

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

a second electrical connection on the turbine blade for routing the electronic data signals from the telemetry transmitter circuit to the rotating data antenna; and

,

a stationary data antenna affixed to the stationary component.

2. The telemetry system of claim 1, wherein the rotating secondary induction coil comprises at least one ceramic substrate mounted to an end face of the turbine blade root and on the substrate a planar winding is formed and the planar winding is electrically connected to the telemetry transmitter circuit.

3. The telemetry system of claim 1, wherein the ceramic substrate is composed of a low temperature co-fired ceramic.

4. The telemetry system of claim 1, wherein the ceramic substrate is composed of a high temperature co-fired ceramic.

5. The telemetry system of claim 1, wherein the stationary primary induction coil assembly includes a plurality of RF transparent casings that are composed of a composite ceramic matrix and each substrate is disposed within a respective casing and each casing is affixed to the static seal segment.

6. The telemetry system of claim 1, wherein the rotating secondary induction coil assembly includes a ceramic substrate with a planar winding encased in an RF transparent casing that is composed of a composite ceramic matrix, and the casing is affixed to the end face of the turbine blade root.

7. The telemetry system of claim 1, wherein each substrate includes at least one slot centrally disposed within the respective planar winding and within which a magnetic core is disposed.

8. A telemetry system for use in a combustion turbine engine having a compressor, a combustor and a turbine, the telemetry system comprising:

a sensor on a component of the combustion turbine wherein the component operates at temperatures of at least about 450°

C.;

a telemetry transmitter circuit, in electrical communication with the sensor, wherein electronic data signals indicative of a condition of the component are routed from the sensor to the telemetry transmitter circuit;

an induction power system for powering the telemetry transmitter circuit comprising;

at least one primary induction coil assembly including a first ceramic substrate on which a first planar conductive winding is formed and is electrically connected to a power source, wherein the first ceramic substrate is mounted to the turbine in spaced relation to the component with the winding facing the component and the ceramic substrate provides insulating properties at temperatures up to about 1500°

C.; and

,

a secondary induction coil assembly mounted to the component in spaced relation to the primary induction coil assembly and including at least one second ceramic substrate on which a second planar conductive winding is formed that is electrically connected to the telemetry transmitter circuit and the second ceramic substrate provides insulating properties at temperatures up to about 1500°

C.;

a first data antenna affixed to the component and electrically connected to the telemetry transmitter circuit for receiving the electronic data signals from the sensor via the telemetry transmitter circuit;

a second data antenna affixed to the turbine in spaced relation to the first data antennae for receiving electronic data signals transmitted from the first data antenna.

9. The telemetry system of claim 8, further comprising an electrically conductive material deposited on the component for routing electronic signals from the sensor to the telemetry transmitter circuit.

10. The telemetry system of claim 8 wherein the at least one primary induction coil assembly is energized at between approximately 0.25 and 2.00 MHz so that the secondary induction coil assembly has an operating frequency of between 0.25 and 2.00 MHz and provides power to the telemetry transmitter circuit board.

11. The telemetry system of claim 8, wherein there is a plurality of the primary induction coil assemblies mounted to a static seal segment of the component and aligned end to end spanning a circumference of the static seal segment and all the planar windings are electrically connected in series.

12. An induction power coil assembly, comprising:

a substrate comprising a plurality of dielectric layers forming a top and bottom surface of the substrate;

a plurality of conductive layers each comprising a planar winding including a first planar winding formed on the top surface of the substrate and each of the remaining planar windings is disposed between respective ones of the dielectric layers; and

wherein each planar winding is electrically connected to an adjacent consecutive planar winding.

13. The induction power coil assembly of claim 12 wherein the first planar winding on the top surface of the substrate is connected to a power source for input of an electric current at the first planar winding.

14. The induction power coil assembly of claim 12 wherein a planar winding is on the bottom surface of the substrate.

15. The induction power coil assembly of claim 12 wherein the number of dielectric layers is an odd number and the number of conductive layers is an even number.

16. The induction power coil assembly of claim 12 wherein each planar winding has a generally spiral configuration having an outermost end and an innermost end, and consecutive planar windings are electrically connected at the respective outermost ends or the respective innermost ends.

17. The induction power coil assembly of claim 16 wherein the power source is connected to the outermost end of the first planar winding which is electrically connected to an adjacent planar winding at their respective innermost ends.

18. The induction power coil assembly of claim 16 wherein each planar winding includes a central area within each spiral configuration and the central areas of the planar windings are aligned, and a slot is formed through each central area and a magnetic core is fixed within the slot.