How does the hydraulic oil circuit work

1、 Power password for hydraulic system
The hydraulic circuit is like the blood circulation system of the human body, but it transmits power rather than oxygen. After the pump station pressurizes the hydraulic oil to 15-30MPa, these "power blood" rush towards the actuator through the pipeline. The key point is:
Pascal's Law is the foundation - the pressure of a closed liquid is equal everywhere
Oil cylinder/motor converts pressure energy into mechanical energy
Control valves are like traffic police, directing the flow of oil
2、 Intelligent dance steps for controlling valves
The precise control of hydraulic systems relies entirely on various valves to perform a "fluid ballet":
1. Directional control valve: controls the opening and closing of the oil circuit like a door
2. Pressure control valve: acts as the system's "safety officer" and automatically releases pressure when overpressure occurs
3. Flow control valve: Control the speed of the actuator by adjusting the opening size
3、 Ubiquitous hydraulic force
From excavators to injection molding machines, hydraulic systems demonstrate amazing adaptability:
Construction machinery: Lift several tons of heavy objects with a pressure of 200 bar
Machine tool equipment: achieve a repeat positioning accuracy of 0.01mm level
Aerospace: Hydraulic actuator controls aircraft control surfaces
Special advantage: The power density is 5 times that of electric transmission, and it is not afraid of humid environments