Systems and methods for monitoring surge conditions
AssigneeSimmonds Precision Products, Inc.
InventorLei Liu
Life of this patent
Estimating the term…
Abstract
A method for monitoring for a surge condition includes detecting a surge condition through vibration signals measured at at least one location in a turbomachine. Detecting a surge condition includes determining a ratio-metric indicator RBR by comparing a blade frequency band ΩB to a reference frequency band ΩR. Detecting a surge condition includes calculating a surge score SS with the following equation: SS = R BR - R μ R σ wherein Rμ is a sample mean of a set of ratio-metric indicators and Rσ is a sample standard deviation of a set of ratio-metric indicators. Detecting a surge condition includes determining whether a surge condition exists based on the surge score.
Claims13
A method for monitoring for a surge condition, comprising:
- detecting a surge condition through vibration signals measured at at least one location in a turbomachine, wherein detecting a surge condition includes:
- determining a ratio-metric indicator, RBR, by comparing a blade frequency band, ΩB, to a reference frequency band, ΩR;
- calculating a surge score, SS, with the following equation:
- SS
- =
- R
- BR
- -
- R
- μ
- R
- σ
- wherein Rμ is a sample mean of a set of ratio-metric indicators and Rσ is a sample standard deviation of a set of ratio-metric indicators;
- and
- determining whether a surge condition exists based on the surge score.
A turbomachinery surge monitoring system, comprising:
- at least one sensor coupled to a compressor system;
- and
- a processing unit coupled to the at least one sensor including a plurality of program instructions comprising:
- program instructions to detect a surge condition through vibration signals measured at at least one location in a turbomachine, wherein program instructions to detect a surge condition include:
- program instructions to determine a ratio-metric indicator, RBR, by comparing a blade frequency band, ΩB, to a reference frequency band, ΩR;
- program instructions to calculate a surge score, SS, with the following equation:
- SS
- =
- R
- BR
- -
- R
- μ
- R
- σ
- wherein Rμ is a sample mean of a set of ratio-metric indicators and Rσ is a sample standard deviation of a set of ratio-metric indicators;
- and
- program instructions to determine whether a surge condition exists based on the surge score.
Dependencies are inferred from the claim text.