| The hydraulic system’s oil temperature of steel plants’annealing and acid picklinguncoiling machine often goes high in the use process, the high temperature of hydraulicsystem’s oil will reduce the operating flexibility of the uncoiling machine, and reduce thework pressure, this phenomenon has aroused widespread concern. At present, thehydraulic system of uncoiling machine is mostly driven by fixed displacement pump, inthe case of same motor speed, the output of the pump flow remains the same, so it can’tmeet the load changes. The load of uncoiling machine’s working unit has large range andchange frequently, resulting in a big loss of overflow. With the rapid development ofindustrial technology, the shortage of energy is becoming more and more serious.Therefore, the uncoiling machine’s hydraulic system driven by fixed displacement pumphas been gradually replaced by the energy-saving new hydraulic system.Based on the summary of the causes and impacts of the high temperature ofHydraulic System’s oil, to reduce the power loss, this project firstly analyzing the energyconsumption in a cycle conditions of the annealing and acid pickling uncoiling machine’shydraulic system, then designing the hydraulic system driven by constant pressurevariable pump with oil drain cooling to meets the working conditions’designrequirements and energy-saving.Using AMESim simulation software to establish the simulation model of theuncoiling machine’s hydraulic system and analyzing the dynamic characteristics of thesystem. Comparing Energy consumption of the new and old program, summed up theenergy efficiency of the new program.Using flow field analysis software FLUENT to simulate temperature field of the aircooling radiator’s oil passages, comparing the theoretical results and simulation results toverify the correctness of the new program. Finally, testing the feasibility of the new designthrough the field testing and debugging, the results turn out that the uncoiling machine’shydraulic system can meets all design requirements.The conclusions drawn by the analysis above provides a theoretical basis for the design of energy-saving of the uncoiling machine’s hydraulic system. It has greatsignificance in reducing the heat generation of uncoiling machine’s hydraulic systemduring the different operating conditions, improving the efficiency of hydraulic systems. |
