The reason for the power loss of the hydraulic system of the hydraulic press?
The power loss of the hydraulic system will cause the loss of energy, and the total power of the system is out of balance. Considering the power source, the working condition of the actuator is diversified, sometimes the system needs large flow and low pressure; sometimes it needs small flow and high pressure. Therefore, it is appropriate to choose a pressure limiting variable displacement pump, because the flow rate of this type of pump changes with the change of system pressure. When the system pressure is reduced, the flow rate is relatively large, which can meet the fast stroke of the actuator. When the system pressure increases, the flow rate decreases accordingly, which can meet the working stroke of the actuator. This can not only meet the working requirements of the actuator, but also make the power consumption more reasonable. Reasonable choice of hydraulic oil. When the hydraulic oil flows in the pipeline, it will show viscosity, and when the viscosity is too high, it will produce greater internal friction, causing the oil to heat up and increasing the resistance when the oil flows. When the viscosity is too low, it is easy to cause leakage, which will reduce the volumetric efficiency of the system. Therefore, the oil with suitable viscosity and good viscosity-temperature characteristics is generally selected. When hydraulic oil flows through various types of hydraulic valves, there is inevitable pressure loss and flow loss. This part of the hydraulic machine energy loss accounts for a large proportion of the total energy loss. Therefore, a reasonable choice of hydraulic pressure, adjust the pressure valve pressure is also an important aspect of reducing power loss. Part of the energy lost in the hydraulic system will be converted into heat energy, which will increase the temperature of the hydraulic oil and deteriorate the oil, resulting in the failure of the hydraulic equipment. Therefore, when designing the hydraulic system, under the premise of meeting the requirements of use, we should also fully consider reducing the power loss of the system. This can extend the service life of the hydraulic press and provide the working efficiency of the hydraulic press.