Research on Drilling Hydraulic System of Directional Drilling Rig in Coal Mine
Aiming at the problems of poor control performance and poor energy saving of the open drilling hydraulic system of the original downhole directional drilling rig,the composition and working principle of the drilling hydraulic system based on load sensing technology are studied.The AMESim software is used to model and simulate the drilling hydraulic system.The simulation results show that the pressure and flow fluctuations of the drilling hydraulic system based on load sensing technology are within the allowable range,and the dynamic response speed is fast.The working efficiency of the drilling hydraulic system based on load sensing technology is 64.7%.Compared with the efficiency of the original open drilling hydraulic system(20%to 40%),the new system is more energy-efficient.
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