Hydraulic station

The hydraulic station (also known as the hydraulic power unit or hydraulic pump station) is the "power heart" of the hydraulic system. Its core function is to provide stable and controllable high-pressure hydraulic oil to various hydraulic actuating elements (such as hydraulic cylinders, hydraulic motors), by adjusting the pressure, flow rate and direction of the oil, achieving precise control of the actions of hydraulic equipment. It is widely used in various fields of industrial production.

1. Core structure components
Power source components:
Motor: Provides power for the hydraulic pump, commonly using three-phase asynchronous motors, with power matched according to the system's flow and pressure requirements; variable frequency motors can achieve energy-saving speed regulation.
Hydraulic pump: Converts mechanical energy from the motor into hydraulic energy, outputting high-pressure oil. Common types include gear pumps (low cost, suitable for low pressure), vane pumps (low noise, suitable for medium pressure), and piston pumps (high pressure, high precision, suitable for heavy-load scenarios).
Control and regulation components:
Pressure control valve: Such as relief valves (setting the maximum system pressure, overpressure relief), pressure reducing valves (providing stable low pressure for branches), pressure relays (triggering electrical signals when pressure meets the standard).
Flow control valve: Such as throttle valves, speed control valves (adjusting the oil flow to control the movement speed of the actuating elements).
Direction control valve: Such as electromagnetic directional valves, manual directional valves (controlling the oil flow direction to achieve reciprocating / start-stop actions of the actuating elements).
Auxiliary support components:
Tank: Stores hydraulic oil, also having the functions of heat dissipation, sedimentation of impurities, and separation of air in the oil. It is equipped with oil suction and oil filtering devices.

Cooling device: Such as coolers (air-cooled / water-cooled), preventing the system oil temperature from exceeding 30-55℃ (generally controlled), avoiding oil deterioration and sealing component aging.
Sealing parts and pipe fittings: Including oil pipes (steel pipes, high-pressure rubber hoses), pipe joints, sealing rings, preventing oil leakage and intrusion of external impurities.
Instruments and protective components: Such as pressure gauges (monitoring system pressure), liquid level meters (observing oil level), temperature sensors (monitoring oil temperature), air filters (maintaining the pressure balance between the oil tank and the outside). II. Working Principle
After the motor is started, it drives the hydraulic pump to rotate, and the hydraulic pump sucks hydraulic oil from the oil tank;
The hydraulic pump converts mechanical energy into hydraulic energy, pressurizes the low-pressure oil into high-pressure oil, and outputs it to the hydraulic valve group;
By operating the directional control valve, the flow direction of the high-pressure oil is controlled, and it is delivered to the target hydraulic cylinder/hydraulic motor to drive the actuating element to complete extension, rotation, etc.;
The pressure control valve regulates the system pressure to prevent overpressure damage to the equipment; The flow control valve regulates the oil flow and controls the movement speed of the actuating element;
After the action is completed, the hydraulic oil is filtered by the return oil pipeline and return oil filter, and flows back to the oil tank to achieve oil circulation;
The cooling device and filter elements work synchronously to ensure the cleanliness of the system oil and stable working temperature.
III. Core Features and Advantages

Stable power output: Can provide continuous and uniform high-pressure oil to ensure the smooth operation of hydraulic actuating elements without rigid impact.
High control accuracy: Combined with precise hydraulic valves and sensors, it can achieve precise regulation of pressure, flow, and direction, meeting the requirements of automated production.
High power density: Small in size and light in weight, yet capable of outputting large thrust/torque, suitable for heavy-load, compact space installation scenarios.
Flexible configuration: Can be customized for pressure and flow parameters according to equipment requirements, and combined with different pump and valve combinations to adapt to various hydraulic equipment.
Easy maintenance: Modular design, reasonable component layout, facilitating inspection, and replacement of wear parts (such as oil filters, seals).

IV. Common Types and Application Scenarios
By structure: Vertical hydraulic station (small in占地面积)， Horizontal hydraulic station (easy maintenance)， Integrated hydraulic station (valve group integrated installation， compact structure)， Mobile hydraulic station (suitable for mobile equipment).
By pressure level： Low-pressure hydraulic station (≤2.5MPa)， Medium-pressure hydraulic station (2.5~8MPa)， High-pressure hydraulic station (8~31.5MPa)， Ultra-high-pressure hydraulic station (≥31.5MPa).
Typical applications： Hydraulic presses， excavators， cranes， injection molding machines， machine tools， automated production lines， warehouse logistics equipment (stacking machines， lifting platforms)， mining machinery， ship equipment， etc.