Surge Detection Method of Centrifugal Compressor
A technology for centrifugal compressors and signals to be detected, which is applied in the direction of mechanical equipment, machines/engines, non-variable pumps, etc., and can solve the problem that the centrifugal compressor surge detection method, change, and detection effect of the surge detection method are not yet provided. Good and other questions
Active Publication Date: 2021-08-20
TSINGHUA UNIV +1
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[0004] However, the above-mentioned surge flow threshold is not fixed. The surge flow threshold will change when the centrifugal compressor is running in the system, and the surge flow threshold will also change after the centrifugal compressor is aging for a long time. Therefore, The detection effect of the above surge detection method is not good
A reasonable and effective surge detection method for centrifugal compressors has not been provided in the related art
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[0037] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0038] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.
[0039] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...
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The present disclosure relates to the technical field of turbomachinery, in particular to a method for detecting surge of a centrifugal compressor. The method is used in a motor controller, the motor controller is connected to the drive motor through a wire, the drive motor is connected to the centrifugal compressor through a rotating shaft, the rotor of the drive motor and the impeller of the centrifugal compressor are coaxial, the method includes: obtaining The signal record value of the detection signal, the signal to be detected includes the rotational speed signal of the driving motor and / or the input current signal of the motor controller; according to the fluctuation range of the signal record value, it is determined whether the centrifugal compressor is in surge. In the embodiments of the present disclosure, the motor controller determines whether surge occurs in the centrifugal compressor according to the fluctuation amplitude corresponding to the rotational speed signal of the driving motor and / or the input current signal of the motor controller; the rotational speed signal of the driving motor and the input current signal are easy to detect It provides a new method for the surge detection of the centrifugal compressor and ensures the detection effect of the centrifugal compressor surge.
Description
technical field [0001] The present disclosure relates to the technical field of turbomachinery, in particular to a method for detecting surge of a centrifugal compressor. Background technique [0002] The surge of the centrifugal compressor refers to the vibration under abnormal working conditions that occurs when the working flow of the centrifugal compressor is lower than the surge flow threshold. Surge is a serious hazard to the centrifugal compressor. Therefore, it is necessary to detect the working state of the centrifugal compressor in the actual use process to prevent it from entering the surge area of small flow. [0003] In the related art, the surge detection method of the centrifugal compressor usually includes: online measurement of the actual working flow of the centrifugal compressor, and comparing the measured actual working flow with the surge flow threshold, which is obtained by pre-test threshold; if the actual working flow is lower than the surge flow t...
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IPC IPC(8): F04D27/00
CPCF04D27/001
Inventor 诸葛伟林陈昊翔张扬军梁忠锦
Owner TSINGHUA UNIV