Structure Strength Analysis And Dynamic Simulation Of Power End For Drilling Reciprocating Pump

As the main equipment of drilling technology,drilling reciprocating pump is one of the most important equipment in drilling rig.It is the key equipment of drilling fluid circulation system.At present the situation of energy shortage,it is playing an role in many industrial fields that mud pump is as a kind of energy-saving products.This paper is focused on the power end parts of the 1800HP drilling reciprocating pump as the subject investigated.The power end parts are crankshaft connecting rod system.In this paper,we would be used the mechanical knowledge,finite element analysis and multi-body dynamics software to design and Simulation analysis of the power end of mud pump.The main work of this paper is as follows:The 3D model of the power end of drilling reciprocating pump is constructed by using the 3D drawing software SoildWorks.Based on the kinematics and dynamics theory,the mechanical model of the main power end parts of drilling reciprocating pump is established.The law of motion of the crankshaft connecting rod mechanism in the whole working process is deduced,and the force between the parts in a stroke range is established,which lays the foundation for the finite element analysis and the dynamic analysis.The strength of the connecting rod is analyzed by simulation,and the dangerous point of the connecting rod is determined.The dangerous points of the connecting rod are changed,and the quality,stress and deformation of the connecting rod are measured by using the trend tracker.we are using finite element analysis software workbench to analyze the strength of the crankshaft of the drilling reciprocating pump with the crank angle every 30 degrees.The results show that the stress of the crankshaft is the largest when the crankshaft angle is 316 degrees,and the maximum stress value is also in line with the design requirements.It is used modal analysis and harmonic response analysis to study the key parts of drilling reciprocating pump.The first 6 natural frequencies and the formation of the connecting rod and crankshaft are calculated,and the influence of the resonance frequency and the vibration of the components is analyzed.It is used multi-body dynamics software ADAMS to study simulation analysis kinematics and dynamics of power end of 1600HP mud pump.The dynamic data of the important parts of the reciprocating pump and the dynamic data of the relevant parts are obtained.