Finite element analysis and structural design of fracturing pump valve chamber under multiple working conditions

Abstract

Aiming at the engineering problem of fatigue crack cracking and failure of fracturing pump valve box under multiple working conditions in actual service, taking a model of three-cylinder fracturing pump valve box as the research object, analyze its working conditions and classify typical working conditions. combined with the working principle and the work sequence of each cylinder of the crankshaft, explore the working mechanism of each cylinder under different typical working conditions, According to the actual pressure pump valve box material and finite element geometric model, the service load equivalence under different typical working conditions is determined. Based on the ANSYS Workbench simulation platform, the finite element numerical analysis of the fracturing pump valve box is carried out to explore the internal stress-strain deformation distribution mechanism of the valve box under the actual service environment, and then the structural design of the existing fracturing pump valve box is improved, The calculation shows that the improvement effect is increased by 29%, which can provide theoretical reference and technical support for structural design optimization and fatigue analysis of fracturing pump valve box.