浅析40T支架搬运车液压系统油温变化对其效率的影响

Brief Analysis of Effect of Oil Temperature Change on Efficiency of Hydraulic System of 40T Support Carrier

介绍了油温变化对40T支架搬运车液压系统油液黏度、液压介质和橡胶类密封件的影响,分析了液压系统的总发热功率、总散热功率,结合动态热平衡的计算,找出了液压系统总效率与油温变化之间的关系,并给出其函数关系式。根据这种关系,通过一种工况的油温实测数据取样,计算出相应的效率值,定量地验证了液压系统油温变化引起效率变化的关系,得出了总效率随着温度变化而变化的结论,即温差增大时,总效率降低;温差减小时,总效率增大。通过该结论可以全面掌握系统的工作状态,通过降低油温有效提高效率。

The paper introduced effect of oil temperature change on oil viscosity, hydraulic medium and rubber seal of hydraulic system of 40T support carrier, analyzed total heat power, total heat-dissipated power of the hydraulic system, and found relation between total efficiency and oil temperature change of the hydraulic system and gave its function relation by use of dynamic thermal equilibrium computation. According to the relation and sampling of measured oil temperature data of an operating mode, it calculated corresponding efficiency value, confirmed the relationship that oil temperature change causes efficiency change of the hydraulic system and obtained conclusion that total efficiency changes with oil temperature change, namely when difference in temperature increases, total efficiency reduces; when difference in temperature reduces, total efficiency increases. The system＇s working status could be grasped through the conclusion, and reducing oil temperature can raise efficiency effectively.