Modeling And Simulation For Hydraulic System Of Emulsion Pump Station And Development Of Control System

Both the advancing velocity of hydraulic support and haulage traction velocity of electrical haulage shearer on fully mechanized coal face unmatched. A multi-emulsion pump station based on the pressure of pipe to working is put forward, in order to replace traditional emulsion pump station constructed by two great flux emulsion pump. We analyzed the advancing velocity of hydraulic support according to productive capability of fully mechanized coal face and haulage traction velocity of shearer. Advancing velocity of hydraulic support can sort into static advancing velocity and dynamic advancing velocity. Based on the hydraulic element pressure loss of powered support hydraulic system, the influenced factors of static advancing velocity were analyzed. We designed hydraulic system adapting to four-emulsion pump station. Hydraulic element, pipeline, emulsion pump station, circuit of rising and declining vertical cylinders, circuit of moving support and moving conveyer models are established by means of power bond graph. Mathematical model of hydraulic system is obtained by bond graph. The dynamic characteristics of emulsion pump station and powered support hydraulic system were simulated by numerical computing method. Analyzed the influence of flux and adjusting pressure to procedures of rising, declining, moving support and pushing conveyer. By analyse of the simulation results, determined control plan and parameters setting rule of four-emulsion pump station. Designed control system structure and selected programmable logical controller, equipments and instruments. Electrical circuits were designed, Software of control, communication and mananging were developed in this project.