If large Hydraulic pump station If it is selected improperly, it will not benefit, or even fail to achieve the goal I want. When the large hydraulic pump station is running, if it is operated improperly, the hydraulic pump will stretch.
When installing a large hydraulic pump station, it is necessary to prevent sundries from falling into the mechanical equipment. Before adjustment, it is necessary to place the unit on the bottom of the foundation bolt. Between the base and the bottom, a few modules can be used for pad correction to avoid the application problems of large hydraulic pumps.
1、 Principle of hydraulic station system Hydraulic station manufacturer
1. The principle of hydraulic system Z is that the pressure inside the liquid is proportional everywhere. The liquid oil with certain internal pressure generated by the driving oil pump is transmitted to the hydraulic actuator through the hydraulic pipeline, such as Hydraulic cylinder The advantage of high-pressure oil lies in the piston, which makes the pressure at both ends of the piston unbalanced, so the piston moves to do work. The high-pressure oil can also benefit from the circumferential arrangement of blades to mobilize the blade shaft to twist, which is called the oil motor.
2. The hydraulic system is the assembly of pressure transmission. The hydraulic oil is the carrier of pressure transmission. The liquid with a certain pressure will generate a beneficial force in a certain area, which will drive the movement of parts.
2、 Attention work of hydraulic station system
1. From the perspective of power source pump, considering the diversity of actuator working conditions, the accidental system needs large flow and low pressure; Occasionally, small flow and high pressure are required. Therefore, it is appropriate to select the pressure limiting variable displacement pump, because the flow of this type of pump changes with the change of system pressure. When the system pressure decreases, the flow is relatively large, which can meet the fast travel of the actuator. When the system pressure increases, the flow decreases accordingly, which can meet the working distance of the actuator. This can not only meet the working requirements of the actuator, but also make the power consumption relatively reasonable.
2. Pressure loss and flow loss are unavoidable when hydraulic oil flows through various hydraulic valves. This one-sided energy loss accounts for a large proportion of all energy losses. Therefore, reasonable selection of the hydraulic device and adjustment of the pressure of the pressure valve are also important aspects to reduce power loss. The flow valve shall be selected according to the flow regulation limit in the system and ensure that its small and stable flow can meet the application requirements. The pressure of the pressure valve shall be lower when it meets the normal operation of the hydraulic equipment.
3. If the executive has speed regulation requirements, Lame should not only meet the speed regulation requirements, but also reduce the power loss when selecting the speed regulation circuit. The common speed regulating circuits mainly include: throttle speed regulating circuit, volume speed regulating circuit, volume throttle speed regulating circuit. In this case, the power loss of the throttling speed regulating circuit is large and the low speed stability is good. The volume speed regulating circuit has neither overflow loss nor throttling loss, obeys high speed, but has poor stability at low speed. To meet the requirements of both sides at the same time, the volume throttling speed regulating circuit composed of differential pressure variable displacement pump and throttle valve can be accepted, and the pressure difference between the two ends of throttle valve is small, so as to reduce the pressure loss.
4. Select the hydraulic oil reasonably. When the hydraulic oil moves in the pipeline, it will have viscosity. When the viscosity is too high, it will produce greater internal conflict force, causing oil fever, and increasing the resistance when the oil moves. When the viscosity is too low, it is easy to cause leakage and reduce the system volume. Therefore, the oil with appropriate viscosity and relatively good viscosity temperature characteristics is generally selected. In addition, when the oil moves in the pipeline, there are also pressure losses along the pipeline and local pressure losses, so when designing the pipeline, we should shorten the pipeline while reducing the elbow.
When a large hydraulic pump station is used, it is very easy to be polluted. For example, when the equipment is used, the residues left behind, as well as the intrusion during the operation of the equipment, will affect the quality of the hydraulic oil, which affects the quality of the hydraulic oil, and indirectly affects the application performance of the large hydraulic pump station.
In the pump body of a large hydraulic pump station, there is a hydraulic cylinder. If the working fluid flows in the cylinder pressure chamber to the low-pressure chamber through the outer edge of the piston seal, the large hydraulic pump station will lose its pressure, resulting in tension and confusion, and internal leakage. Therefore, in application, it is necessary to ensure whether the flow allocation of large hydraulic pump station is appropriate. No matter what the load, it is necessary to ensure that the large hydraulic pump station is equipped with sufficient oil supply so that it can operate.
Large hydraulic pump stations are used more and more in today's society. The main application methods are to provide power and change power. The hydraulic station of the mine machine is controlled by a programmable controller, which is programmed according to the action history of the hydraulic station. In the ordinary work of the mine, the high and low process is a self mastering process. The staff adopts automatic miss mastering. Wellhead braking is the mastering process that occurs or will occur in the working process, to prevent emergency braking caused by accidents.
