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Performance Research and Structure Optimization of Labyrinth Screw Pump.

Xin Rong1, Hongwu Zhu1, Biao Hu2

  • 1College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China.

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|August 6, 2021
PubMed
Summary
This summary is machine-generated.

This study optimized labyrinth screw pumps for high-viscosity fluids. Structural improvements led to a 13.55% efficiency and 19.53% head increase, enhancing performance for challenging media transport.

Keywords:
OSFDgenetic algorithmlabyrinth screw pumpresponse surface optimizationsensitivity analysisviscous oil transportation

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Area of Science:

  • Mechanical Engineering
  • Fluid Dynamics
  • Pump Technology

Background:

  • Labyrinth screw pumps offer simple structures and good sealing for viscous, gas-rich, and particle-laden fluids.
  • Understanding the impact of medium viscosity on pump performance is crucial for optimization.

Purpose of the Study:

  • To optimize the structure of a rectangular labyrinth screw pump.
  • To enhance pump efficiency and head, particularly for high-viscosity media.

Main Methods:

  • Numerical simulations were employed to study the effect of medium viscosity.
  • Response surface theory, neural network prediction, and multi-objective genetic algorithms were used for structural optimization.
  • Parameter sensitivity analysis identified key structural parameters for optimization.

Main Results:

  • An interactive influence between stator and rotor structural parameters was identified.
  • The optimized labyrinth screw pump design showed significant performance improvements.
  • Efficiency increased by 13.55% and head by 19.53% for a 133 cp medium compared to the original model.

Conclusions:

  • The developed structural optimization model effectively improved labyrinth screw pump performance.
  • The optimized design is suitable for transporting high-viscosity fluids, demonstrating enhanced efficiency and head.