Surge detection method for centrifugal compressor
A technology for centrifugal compressors and signals to be detected, applied in mechanical equipment, machine/engine, pump control, etc., can solve problems such as poor detection results of surge detection methods, changes, and no provision of centrifugal compressor surge detection methods.
Active Publication Date: 2020-10-27
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 disclosure relates to the technical field of impeller machinery, and more particularly to a surge detection method for a centrifugal compressor. The method is used in a motor controller, the motorcontroller is connected with a driving motor through a wire, the driving motor is connected with the centrifugal compressor through a rotating shaft, and a rotor of the driving motor and an impellerof the centrifugal compressor are coaxial. The method comprises the steps that signal recording values of a signal to be detected are acquired, wherein the signal to be detected comprises a rotating speed signal of the driving motor and / or an input current signal of the motor controller; and whether surge occurs in the centrifugal compressor is determined according to the fluctuation amplitude ofthe signal recording values. According to the embodiment of the surge detection method, whether the surge occurs in the centrifugal compressor or not is determined by the motor controller according tothe fluctuation amplitude corresponding to the rotation speed signal of the driving motor and / or the input current signal of the motor controller; and the rotation speed signal of the driving motor and the input current signal are easy to detect, a new means is provided for surge detection of the centrifugal compressor, and the surge detection effect of the centrifugal compressor is ensured.
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