Open AccessImproving the efficiency of a hydraulic drive with a closed-loop hydraulic circuit
Author(s) -
R. T. Emelyanov,
A. S. Klimov,
K. S. Kravtsov,
I. B. Olenev,
E. S. Turysheva
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1515/4/042078
Subject(s) - throttle , bandwidth throttling , hydraulic fluid , hydraulic machinery , working fluid , hydraulic circuit , mechanics , rubbing , hydraulic pump , hydraulics , fluid dynamics , hydraulic motor , control theory (sociology) , thermal hydraulics , mechanical engineering , engineering , computer science , heat transfer , physics , control (management) , artificial intelligence , gas compressor , aerospace engineering
While developing the Arctic territories, the use of mechanical equipment, adapted to work at low temperatures, is required. The power element of hydraulic machines is a hydraulic fluid, which, under different ambient conditions, changes the viscosity-temperature properties. With decreasing temperature, the viscosity increases. The hydraulic fluid lubricity of the rubbing surfaces of the hydraulic drive elements is declining. On rubbing surfaces, the oil film strength decreases, which leads to its rupture. A hydraulic circuit of the hydraulic drive is proposed, containing an additional adjustable throttle. When throttling the working fluid, the thermal energy releases. The process of throttling the working fluid is described by differential equations. To simulate the proposed system, a dynamic closed-loop hydraulic model was compiled using MATLAB&Simulink. Modeling the hydraulic drive made it possible to obtain the time dependences of the working fluid pressure as it leaves the throttle. The obtained dependences by mathematical modeling made it possible to determine the effect of the differential pressure on the throttle on the fluid flow rate, as well as the dependence of the decrease in the liquid flow coefficient on the differential pressure. The use of a throttle hydraulic actuator with a closed-loop hydraulic circuit ensures stable temperature conditions.