Pump shaft seal life prediction system and method

A pump shaft seal life prediction system, comprising:

• a pump;
• a vibration detection device, disposed on the pump, and configured to obtain a plurality of time domain vibration magnitudes of vibration signals of the pump;
• a storage;
• and
• a processor, electrically connected to the vibration detection device and the storage, and configured to execute following steps of:
• establishing a temporal vibration model according to the time domain vibration magnitudes;
• inputting a plurality of parameters of the pump under operation into the temporal vibration model to convert the parameters into a plurality of vibration spectrums by processing a Fourier transform, wherein the parameters comprise a rotation speed and a number of blades of the pump;
• extracting a plurality of characteristic amplitudes of the vibration signals of the pump according to the vibration spectrums;
• combining the characteristic amplitudes with each other and performing a dimensionality reduction process on the characteristic amplitudes to generate a plurality of characteristic combinations;
• establishing a life model according to the characteristic combinations to store the life model to the storage;
• and
• establishing at least one threshold value according to the life model to compare the at least one threshold value with the characteristic amplitudes to determine a life of a shaft seal of the pump.