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US 10,465,551 B2Granted
Reverse rotation detection in rotating machinery
AssigneeGeneral Electric Company
InventorsMel Gabriel Maalouf, Munir Ahmed Qureshi
Life of this patent
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Abstract
A system includes a sensor configured to monitor rotating machinery and generate a signal based on a physical characteristic of the rotating machinery. The system also includes a monitoring system with a processor. The processor of the monitoring system is configured to receive the signal from the sensor. The processor determines an occurrence of reverse rotation of the rotating machinery by comparing the signal to a normal operating pattern to generate an initial value. The processor generates a notification signal indicating the occurrence of a reverse rotation.
Claims20
A device, comprising:
- a communication interface that, in operation, receives a signal indicative of a rotational speed, a vibration, or any combination thereof of a rotating machine element;
- a memory comprising an operating pattern of the rotating machine element, wherein the operating pattern comprises a predetermined value indicative of rotational speed, rate of speed increase or decrease, vibration, or any combination thereof, during normal operation of the rotating machine element;
- and
- a processor coupled to the communication interface and the memory, wherein the processor is configured to perform operations comprising:
- deriving an actual rate of speed increase or decrease of the rotating machine element from the signal received from the communication interface;
- determining an occurrence of reverse rotation of the rotating machine element, the determining including
- comparing the signal received from the communication interface and the actual rate of speed increase or decrease of the rotating machine element to the operating pattern stored in the memory, and
- assessing that a direction of vibration precession is different than a design rotational direction of the rotating machine element, the assessment including determining an occurrence of a phase reversal of the rotating machine element based on a change of vibration phase data received by a first sensor configured with respect to a first axis associated with the rotating machine element and a second sensor configured with respect to a second axis associated with the rotating machine element, the second axis perpendicular to the first axis;
- and
- generating an initial value indicative of the occurrence of the reverse rotation of the rotating machine element.
7 more elements
A system, comprising:
- a first sensor and a second sensor that, in operation, monitor rotating machinery and generate signals indicative of a rotational speed, a vibration, a vibration phase, or any combination thereof, of the rotating machinery;
- and
- a monitoring system comprising a processor configured to perform operations comprising:
- receiving the signals;
- deriving an actual rate of speed increase or decrease of the rotating machinery from the signals;
- determining an occurrence of reverse rotation of the rotating machinery, the determining including
- comparing the signals and the actual rate of speed increase or decrease of the rotating machinery to an operating pattern of the rotating machinery to generate an initial value, wherein the operating pattern comprises a predetermined value indicative of rotational speed, rate of speed increase or decrease, vibration, or any combination thereof, during normal operation of the rotating machinery, and
- assessing that a direction of vibration precession is different than a design rotational direction of the rotating machinery, the assessment including determining an occurrence of a phase reversal of the rotating machine element based on a change of vibration phase data received by the first sensor configured with respect to a first axis associated with the rotating machine element and the second sensor configured with respect to a second axis associated with the rotating machine element, the second axis perpendicular to the first axis;
- and
- generating a notification signal indicating the occurrence of a reverse rotation.
7 more elements
A non-transitory computer-readable medium having computer executable code stored thereon, the code comprising instructions to:
- receive signals from a first sensor and a second sensor associated with rotating machinery, wherein the signals are indicative of a rotational speed, a vibration, a vibration phase, or any combination thereof, of the rotating machinery;
- derive an actual rate of speed increase or decrease of the rotating machinery from the signals;
- determine an occurrence of reverse rotation of the rotating machinery based on comparing the signals, the actual rate of speed increase or decrease of the rotating machinery and an operating pattern of the rotating machinery, wherein the operating pattern comprises a predetermined value indicative of rotational speed, rate of speed increase or decrease, vibration, or any combination thereof, during normal operation of the rotating machinery, and assessing that a direction of vibration precession
- is different than a design rotational direction of the rotating machinery, the assessment including determining an occurrence of a phase reversal of the rotating machine element based on a change of vibration phase data received by the first sensor configured with respect to a first axis associated with the rotating machine element and the second sensor configured with respect to a second axis associated with the rotating machine element, the second axis perpendicular to the first axis;
- and
- generate a notification signal indicating the occurrence of reverse rotation of the rotating machinery.
3 more elements
Dependencies are inferred from the claim text.