Sunday, 29 November 2020
Pump Phase Shift Control in the World’s Largest Iron Ore Concentrate Pipeline

Pump Phase Shift Control in the World’s Largest Iron Ore Concentrate Pipeline

Download the white paper to discover the advantages of a phase shift controller for installations with a multiple pump arrangement in Mining, Minerals Processing and Power industries.

Crankshaft driven positive displacement pumps generate a fluctuating volumetric flow rate which, depending on the hydraulic response of the connected system, generates pressure pulsations. This may cause unbalanced loads in the piping system, especially when hydraulic resonances are present.

When several pumps are connected in parallel, the likelihood for excitation of hydraulic resonances increases. The resulting pressure pulsation is amongst other factors dependent on the phase shift between the crankshafts of the individual pumps.

This paper describes the development of a phase shift controller which controls the phase shift between the crankshafts of the individual pumps, thereby limiting and largely eliminating hydraulic resonance excitation.

The phase shift controller has been installed in the world largest iron ore pipeline, designed to transport 26.5 Mtpa of iron ore concentrate. This paper will demonstrate the beneficial effect of the phase shift control system lowering the pressure pulsation level by a factor 3 to 6 and explain how this was achieved.

Download the PDF white paper here 

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