Identification of vibration source and causes of vibration in a pumping station building
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Abstract:
In order to solve the problem of vortex belt, vortex and hydraulic pulsation in the water delivery pipeline of an irrigation pump station when multiple units a rerunning , the pump house has a large vibration. Through the establishment of a three dimensional finite element model of the structure of the pumping station building , using ABAQUS software and Lanczos method to extract the structur almo de of the pumping station building, the naturalvibration frequency and vibration mode of the pumping station building are analyzed. The vibration source and the cause of the vibration of the power house are determined, and the possible vibration source and frequency characteristics of the pumping station are determined. The vibration source is verified and analyzed with the theoretical calculation v alue of the main excitation source frequency of the pumping station unit. The results show that: there is resonance phenomenon betw een the excit ation source frequency of the pumping station unit and the natural vibration frequency of the powerhouse structure. The r esearch results can provide a theoretical basis for the maint enance and reinforcement of the pumping station.
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