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A Generalized Approach to the Analysis of Feed Unevenness in Displacement Pumps

  • V. E. ShcherbaEmail author
  • V. V. Shalai
  • E. A. Pavlyuchenko
COMPRESSORS, PUMPS, AND PIPELINE FITTINGS
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A generalized approach to the analysis of feed unevenness in positive displacement pumps is considered. A procedure for calculating the working processes in chambers of constant or variable volume in a discharge line as well as a nonstationary one-dimensional gas flow in a discharge pipe is developed. Boundary conditions are defined. Nonstationary one-dimensional flow is calculated by the method of “characteristics.” By means of a numerical experiment, variations in the pressure in the working chambers and along the length of the pipe as a function of the turning angle of the shaft are established. On the basis of pressure fluctuation in a discharge pipe, it is proved that the feed unevenness significantly exceeds the magnitude of the feed unevenness determined when the pressure fluctuation is not taken into account.

Key words

positive displacement pump feed unevenness nonstationary flow discharge pipe cylinder piston axial-piston pump 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • V. E. Shcherba
    • 1
    Email author
  • V. V. Shalai
    • 1
  • E. A. Pavlyuchenko
    • 1
  1. 1.Omsk State Technical UniversityOmskRussia

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