Axial vibration monitoring for detecting shaft misalignments in turbomachinary trains
First Claim
1. A system for determining a shaft misalignment in a train of components with serially coupled rotating shafts, comprising:
- a sensor affixed to a component of the train proximate a rotating shaft, wherein the sensor collects vibration data along a longitudinal extent of the rotating shaft;
a frequency analyzer for generating frequency domain data from the vibration data; and
an analysis system for analyzing a frequency component of the frequency domain data at one times a rotational frequency of the rotating shaft to identify a misalignment between the rotating shaft and an adjacently coupled rotating shaft,wherein the train includes more than two components.
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Abstract
A system for determining a shaft misalignment in a turbomachinary train having a plurality of components with serially coupled rotating shafts. A disclosed system includes a sensor affixed to a component of the turbomachinary train proximate a rotating shaft, wherein the sensor collects vibration data along an axial direction of the rotating shaft. Also provided is a frequency analyzer for generating frequency domain data from the vibration data and an analysis system for analyzing a frequency component of the frequency domain data at one times a rotational frequency of the rotating shaft to identify a misalignment between the rotating shaft and an adjacently coupled rotating shaft.
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Citations
20 Claims
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1. A system for determining a shaft misalignment in a train of components with serially coupled rotating shafts, comprising:
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a sensor affixed to a component of the train proximate a rotating shaft, wherein the sensor collects vibration data along a longitudinal extent of the rotating shaft; a frequency analyzer for generating frequency domain data from the vibration data; and an analysis system for analyzing a frequency component of the frequency domain data at one times a rotational frequency of the rotating shaft to identify a misalignment between the rotating shaft and an adjacently coupled rotating shaft, wherein the train includes more than two components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A train, comprising:
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three or more components with serially coupled rotating shafts; a sensor affixed to at least one component proximate a rotating shaft, wherein the sensor collects vibration data along a longitudinal extent of the rotating shaft; a frequency analyzer for generating frequency domain data from the vibration data; and an analysis system for analyzing a frequency component of the frequency domain data at one times a rotational frequency of the rotating shaft to identify a misalignment between the rotating shaft and an adjacently coupled rotating shaft. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for determining a shaft misalignment in a train of components with serially coupled rotating shafts, comprising:
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a sensor affixed to a component of the train proximate a rotating shaft, wherein the sensor collects vibration data along a longitudinal extent of the rotating shaft; a frequency analyzer for generating frequency domain data from the vibration data; and an analysis system for analyzing the frequency domain data to generate alignment information of the rotating shaft with respect to an adjacently coupled rotating shaft, wherein the train includes more than two components. - View Dependent Claims (20)
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Specification