Research on the single‐value indicators for centrifugal pump based on vibration signals

Abstract

Off‐design operation conditions might not only seriously affect the internal flow status of a centrifugal pump, but also result in additional energy loss and potential mechanical damage. Therefore, early‐stage monitoring and predication on off‐design operation conditions for centrifugal pumps have become essential. Single‐value indicators have favorable factors such as a smaller amount of calculation and easier identification. As a result, industries prefer the more straightforward approach: obtaining single‐value indicators directly from the signals which could be easier compared with accepted standards. The possibility of applying the single‐value indicators of vibration into operation condition monitoring for a centrifugal pump is studied theoretically and experimentally, which shows that the statistical features of vibration might be suitable for hydraulic instability detection for a centrifugal pump.