Research on upstream pulsation of secondary source in hydraulic Pipeline active control

[Objective] The pipeline active control technology uses the pulsation generated by the secondary pulsation source to offset the original pulsation of the pipeline, which can achieve a better damping effect in the downstream of the secondary pulsation source, but the vibration of the upstream of the secondary pulsation source will increase. so the change of the upstream of the secondary pulsation source is explored and the position of the secondary pulsation source is optimized. [Methods] The hydraulic pipeline active control system was modeled based on Simulink software by frequency domain analysis method. The influence of pulsation frequency, working pressure, position of secondary pulsation source, pipeline components and other factors on the vibration of the upstream secondary pulsation source was explored, and the influence weight of different factors on the upstream pulsation was explored. [Results] The amplitude of pipeline pulsation increased with the increase of pipeline working pressure. As the distance between the secondary pulsation source and pump source increases, the number of peak pulsations increases. [Conclusion] The study shows that the secondary pulsation source should be installed as close as possible to the pump source.