The most complete air compressor energy saving transformation method

The most complete air compressor energy saving transformation method

Due to the design standard of the air compressor, the user can only determine the motor capacity according to the maximum demand when selecting the model, resulting in a large margin in the air compressor system. The star-delta step-down starting is traditionally used, and the starting current reaches 2 to 3 times the rated value, which directly affects the power grid.

　　Moreover, most air compressors are running continuously, and the speed cannot be reduced according to the pressure, which results in too long no-load operation time and huge waste of electric energy.

　　 Air compressor power saving

　　Inverter energy saving ideas

　　1, centralized control method

　　 Multiple air compressors are centrally controlled. According to the change of gas consumption, the number of operating units is automatically controlled.

　　(1) When the gas consumption is reduced to a certain amount, the gas production is reduced by reducing the loading time.

　　(2) If the air consumption is further reduced, the air compressor with good performance will automatically stop.

　　2, frequency conversion speed regulation method

　　The frequency conversion speed regulation method is adopted to reduce the motor shaft power output. Before the transformation, the air compressor will automatically unload when it reaches the set pressure; after the transformation, the air compressor will not unload, but will reduce the speed to reduce the gas output and maintain the lowest pressure of the air network. There are two places to save energy:

　　(1) Reduce the power consumption in the process from unloading to loading.

　　(2) The motor operation is reduced below the power frequency, which can reduce the output power of the motor shaft.

　　3, soft start energy saving

　　Using variable frequency energy-saving devices and using the soft start function of the frequency converter, the starting current starts from zero, and the maximum current does not exceed the rated current, which reduces the impact of the power grid and the power supply capacity requirements, and extends the life of equipment and valves.

　　4, power factor compensation

The reactive power of the motor increases the line loss and the heating of the equipment. The decrease of the power factor reduces the active power, and the equipment use efficiency is low. The waste is serious. After the frequency conversion speed control device is used, the internal filter capacitor of the frequency converter reduces the reactive power loss and increases the power grid. Active power.

　　 Air compressor energy saving

　　 Waste heat recovery and energy saving ideas

　　Users all know that the operating temperature of the air compressor is very high, especially in summer. Long-term operation in high temperature conditions, ordinary replacement of parts and lubricants, so the life of the air compressor is greatly shortened. The air compressor waste heat recovery can completely solve this problem.

　　 1. The principle of air compressor waste heat recovery

　　Recover all the heat of air compressor oil and air, cold water quickly converts hot water directly into hot water, through the insulation pipe to the hot water storage system, and then pumps to the hot water point of the factory. Maintain the long-term operating temperature of the air compressor, improve the air supply quality of the air compressor, reduce the replacement cycle of air compressor parts, and stop the original cooling system.

　　2. Outstanding advantages of air compressor waste heat recovery

　　☆ Original direct heating structure: small footprint, convenient installation; simple control, low failure rate, and lower maintenance costs;

　　☆ High recovery efficiency: dual heat recovery for oil and gas, large temperature difference between inlet and outlet water, high heat recovery efficiency;

　　☆ Zero pressure loss of compressed air: The use of high-efficiency compressed air waste heat recovery device does not change the air flow path to achieve zero pressure loss;

　　☆ To ensure the stable operation of the air compressor: maintain the oil temperature in the optimal working range to extend the service life of the air compressor.