Air dryers have extensive and important applications in the power industry. They provide dry compressed air to protect pneumatic control systems, SF6 gas-insulated equipment, control and instrument air systems, circuit breaker operating mechanisms, and air-insulated switchgear, ensuring efficient, stable, and safe operation of these equipment and systems. Dry compressed air not only improves the performance and service life of equipment, but also reduces maintenance costs and failure rates, providing a solid guarantee for reliable power supply and operation in the power industry.
In the power industry, air dryers play an important role, and their main applications include the following aspects:
Pneumatic control system
Protecting pneumatic control equipment: In power plants, many equipment and control systems rely on compressed air for operation, such as valves, actuators, and instruments. Wet air can cause corrosion and wear inside these pneumatic equipment, affecting their accuracy and reliability. Air dryers protect pneumatic control equipment and extend their service life by providing dry compressed air.
Improving the stability of the control system: Dry compressed air can ensure the stable operation of the pneumatic control system, reduce the failure rate and maintenance requirements, and ensure the safe and efficient operation of the power plant.
SF6 gas insulation equipment
Preventing SF6 gas pollution: SF6 (sulfur hexafluoride) gas is widely used for insulation and arc extinguishing of high-voltage switchgear and circuit breakers. Wet air can increase the moisture content in SF6 gas, reduce its insulation performance, and even cause equipment failure. Air dryers prevent SF6 gas from being polluted by providing dry air to ensure its excellent insulation effect.
Maintaining equipment performance: Dry compressed air can prevent corrosion and fouling inside SF6 gas-insulated equipment, maintain efficient and reliable operation of equipment, and reduce maintenance and replacement costs.
Control and instrument air system
Protecting instruments and sensors: Various instruments and sensors in the power industry, such as pressure sensors, flow meters and thermometers, are usually driven and controlled by compressed air. Wet air can cause reduced sensitivity and failure of instruments and sensors, affecting the accuracy of data. Air dryers provide dry compressed air to ensure the accuracy and reliability of instruments and sensors.
Reducing data errors and fluctuations: Dry compressed air can reduce data errors and fluctuations of instruments and sensors, ensure accurate monitoring and control of power systems, and improve the efficiency and safety of power production and transmission.
Circuit breaker operation
Ensure the rapid response of circuit breakers: Circuit breakers are used in power systems to protect and isolate circuits and ensure the safety of power transmission. Compressed air is used to drive the operating mechanism of circuit breakers. Wet air can cause slow and unstable action of the operating mechanism, affecting the rapid response of circuit breakers. Air dryers ensure rapid and reliable operation of circuit breakers by providing dry compressed air.
Prevent corrosion and wear of the operating mechanism: Dry compressed air can prevent corrosion and wear inside the circuit breaker operating mechanism, maintain its efficient and stable operation, and extend the service life of the equipment.
Air Insulated Switchgear (AIS)
Improve insulation performance: Air Insulated Switchgear (AIS) uses air as an insulating medium. The moisture in wet air will reduce the insulation performance of the air and increase the risk of arcing and faults. The air dryer improves the insulation performance and safety of AIS equipment by providing dry air.
Maintain equipment reliability: Dry air can prevent fouling and corrosion inside AIS equipment, maintain the reliability and long life of the equipment, and reduce the frequency of maintenance and replacement.