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中文简体1. Regarding the selection of energy-saving circuits. For example: the unloading circuit is to make the output flow of the hydraulic oil pump flow back to the oil tank under the condition of very low pressure when the hydraulic oil pump does not stop rotating, so as to reduce the power loss, reduce the heating of the system, and prolong the life of the pump and motor; while the pressure maintaining circuit It is to make the system maintain the pressure stably when the hydraulic cylinder does not move or has only a small displacement.
2. Optimize the system organization and make a reasonable layout. On the premise of meeting the performance requirements, combined with the cycle, it is necessary to pay attention to the optimized system structure and rational layout. Simple and dependable. Avoid redundant hydraulic components and pipelines, use an integrated design as much as possible, keep the pipes as short as possible, and minimize the number of joints to reduce the loss of resistance along the way and local, so as to achieve the purpose of energy saving.
3. Regarding the selection of Diaphragm Accumulator Factory components, the components with high efficiency and low energy consumption should be selected as much as possible. If a variable pump with high efficiency is selected, the pressure can be changed according to the needs of the load to reduce energy consumption, and an integrated valve can be selected to reduce the number of pipe connections. Pressure loss, select a proportional valve with small pressure drop and continuous control, etc.
First, the principle of hydraulic station system hydraulic station manufacturers
1. The basic principle of hydraulic system Z is that the internal pressure of the liquid is equal everywhere. The liquid oil with a certain internal pressure is generated by the oil pump, and is transmitted to the hydraulic actuator through the hydraulic pipeline, such as the hydraulic cylinder. On the blades arranged in the circumferential direction, the blade shaft is driven to rotate, which is the oil motor.
2. The hydraulic system is the device that transmits the pressure. The hydraulic oil is the carrier of the pressure transmission. The liquid with a certain pressure acts on a certain area to generate a force, and the force drives the movement of the parts.
2. Precautions for hydraulic station system
1. From the perspective of the power source - the pump, considering the diversification of the working conditions of the actuator, sometimes the system requires large flow and low pressure; sometimes it requires small flow and high pressure. Therefore, it is appropriate to choose a pressure-limiting variable displacement pump, because the flow 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 rapid stroke of the actuator. When the system pressure increases, the flow decreases correspondingly, 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.
2. When hydraulic oil flows through various hydraulic valves, there is inevitable pressure loss and flow loss, and the energy loss of this part accounts for a large proportion of the total energy loss. Therefore, reasonable selection of hydraulics and adjustment of the pressure of the pressure valve are also an important aspect of reducing power loss. The flow valve is selected according to the flow adjustment range in the system and ensures that the minimum stable flow can meet the requirements of use. The pressure of the pressure valve should be as low as possible under the condition that the hydraulic equipment works normally.
3. If the actuator has the requirement of speed regulation, then when selecting the speed regulation circuit, it is necessary to meet the requirements of speed regulation and reduce the power loss as much as possible. Common speed control loops mainly include: throttle speed control loop, volumetric speed control loop, and volumetric throttle speed control loop. Among them, the power loss of the throttling speed control circuit is large, and the low speed stability is good. The volume speed control circuit has neither overflow loss nor throttling loss, high efficiency, but poor low speed stability. To meet the two requirements at the same time, a volumetric throttling speed control loop composed of a differential pressure variable pump and a throttle valve can be used, and the pressure difference between the two ends of the throttle valve can be minimized to reduce pressure loss.
4. Reasonable selection of hydraulic oil. When the hydraulic oil flows in the pipeline, it will show viscosity, and when the viscosity is too high, a large internal friction force will be generated, which will cause the oil to heat up and increase the resistance of the oil when it flows. When the viscosity is too low, it is easy to cause leakage and reduce the volumetric efficiency of the system. Therefore, the oil with suitable viscosity and good viscosity-temperature characteristics is generally selected. In addition, when the oil flows in the pipeline, there is also pressure loss along the way and local pressure loss. Therefore, when designing the pipeline, the pipeline should be shortened as much as possible, and the elbows should be reduced at the same time.
