Auxiliary equipment for a pump station refers to the supporting devices installed-in addition to the main pump units-to ensure the safe and efficient operation of the facility.
Power System Equipment
Electric motors/Diesel engines: These serve as the power source for the main pumps; electric motors are suitable for areas with stable power supplies, while diesel engines are used for emergency backup or in remote locations.
Variable Frequency Drives (VFDs): These regulate pump speed to achieve precise flow control, offering energy savings of 20%–30% (refer to the *Code for Design of Pumping Stations*, GB/T 50265).
Soft starters: These reduce motor starting current, minimize impact on the power grid, and extend equipment service life.
Control System Equipment
PLC control cabinets: The core of the automation control system, monitoring parameters such as flow rate and pressure in real time.
Sensors: Including pressure sensors, liquid level sensors, etc.; typically with an error margin of ±0.5% (based on the *General Specifications for Industrial Automation Instruments*).
Remote monitoring terminals: These support remote operation via mobile phones or computers, enhancing management efficiency.
Safety and Protection Equipment
Pressure relief valve: Automatically releases pressure when pipeline pressure exceeds the set value (e.g., 1.5 times the operating pressure) to ensure system safety.
Check valve: Prevents backflow and avoids pump damage caused by the water hammer effect.
Fire safety facilities: Such as fire extinguishers and smoke detectors; must comply with the requirements of the *Code for Fire Protection Design of Buildings* (GB 50016).
Auxiliary Facilities
Drainage system: Includes sumps, submersible sewage pumps, etc., used to remove accumulated water from the pump room.
Ventilation equipment: Axial-flow fans or exhaust fans to ensure air circulation and maintain humidity below 60% (refer to *Operation Regulations for Pumping Stations* SL 255).
Lifting equipment: Single-girder cranes used for the maintenance of heavy equipment; lifting capacity is typically 1–10 tons.
