Research On Machine-hydraulic Coupling Simulation And Hydraulic End Characteristics Of Drilling Pump

Drilling pumps are not only important pump machinery in the industry of reciprocating pumps,but also are the rig's heart in oil and gas exploration.With the increasing difficulty of oil exploration,the performance requirements of drilling pump are also rising.Such as large displacement,high power,small size,light weight and the reliability of use,long life and other advantages and so on.Because of the professionalism and complexity of the industry of reciprocating pump,reciprocating pump designs often adopt analogy.Due to the simple and crude design of the reciprocating pump,the optimal operating conditions of the already-established reciprocating pump deviate greatly from the expected design conditions of the pump and the best performance of the reciprocating pump can't be exerted.As a result,the reciprocating pump has low operation efficiency and short service life.The subject is a certain type of drilling pump for the study,combining the traditional design methods and virtual prototype technology in the design of drilling pump.The 3D model of the drilling pump was established by SolidWorks software and then was imported into the core software ADAMS,and finally the multi-rigid body system dynamic model of the drilling pump was established.Based on the theoretical knowledge of reciprocating pump design,the key components of drilling pump are calculated,and the hydraulic model of drilling pump is established combining with hydraulic software AMESim.Through the specific interface between Adams software and AMESim software,the dynamic model and hydraulic model of drilling pump are used to simulate the actual operation status of drilling pump.The drilling pump dynamics model and hydraulic model are simulated through a specific interface between Adams software and AMESim software which aiming to simulate the actual operation status of the drilling pump.By test of the virtual prototype of the drilling pump,in this paper,to research 1 dynamic parameters of the key components-dynamic characteristics displacement of the suction valve and drain valve,dynamic characteristics of the speed of the suction valve and drain valve;2The pressure curve in the working chamber of the piston,the curve of discharge pressure at the outlet,the flow curve of the suction valve and drain valve,the total flow characteristic curve at the outlet and drilling pump Volumetric efficiency and other target parameters;3By changing the speed and structural parameters of the drilling pump,the flow rate at the outlet of the drilling pump is measured,and the influence of the change whose speed and structural parameters on the performance of the drilling pump is calculated and analyzed.The research of the subject has improved the traditional design method of drilling pump,which not only improves the design accuracy and efficiency of the pump,but also reduces the development cycle and cost.Moreover,it is also beneficial to exert the best performance of the pump,and has played a role in the improvement of the pump's operating efficiency and service life.