Design And Experimental Study On Hydraulic System Of The Mechanization Workover Equipments

According to the developmental needs of the current well servicing operation,a scheme for the new-type wellhead workover mechanical operation was formulated. In this paper, study on mechanized workover equipment, proposed host hydraulic system design requirements based on fully grasp the system program, host operating principle, structure and workflow, carried out the working conditions analysis of executive mechanism movement and load. On the basis, according to calculation and related design experience, determine the host hydraulic system parameters and develop the hydraulic system diagram and select hydraulic components. Supported by structural design of fuel tank components and hydraulic pump groups, and layout system pipeline by rational choice, until the final completion of prototype structures hydraulic pump station.Proposed the research demand of main clamp hydraulic system dynamic characteristics, described its research contents and methods, pointed out the necessity and significance of dynamic characteristics study by the correct derivation of system mathematical model. Carried out theoretical studies on analytical modeling method, including the system differential equations, dynamic equations of the Laplace transform and the significance of transfer function and research methods. Analyze the main clamp hydraulic system and simplified it as valve controlled asymmetric cylinder, valve-controlled motor and quantitative pump - relief valve and other hydraulic units; based on analytical modeling method, applied physics, fluid dynamics, kinematics, dynamics law and equations to derivate mathematical model and transfer function, which lay the theoretical foundation for simulation.Build the main clamp Chucks (Jaw) and braking system based on AMESim software to simulate with experiments varying parameters. The test results are analyzed in order to master the dynamic characteristics of hydraulic systems and system parameters changes over time, and propose rationalization suggestion for system optimal design. When Prototype trial is completed, confirmed the host through the hydraulic system design by field test, analyze the causes and error between the test data and expected; Analyzed and compared the main clamp hydraulic system's dynamic characteristics between on-site test and simulation results, which verify the correctness of AMESim simulation model and the feasibility as the dynamic characteristics system platform.