Compressor is an important industrial equipment, widely used in all aspects of production and life, air conditioning, cold storage, oil industry, chemical industry can not do without the compressor. However, the compressor is also a large power consumer, and its operation in production and life will cause a lot of power consumption. It is necessary to study compressor energy-saving technology. Compressor running energy saving 1 compressor running problems 1.1 low output, high energy consumption. Many industrial compressors limit the compressor power due to energy-saving considerations, resulting in the compressibility of the compressor being lower than the designed value. In particular, when the summer load is increased, the throughput will obviously decrease. Due to the limited cooling capacity, the other equipment in the Production Line can not be fully loaded Run, reduce production efficiency. Compressor dual parallel operation mode is not running high efficiency, poor stability, the two compressors work in parallel, although it can significantly increase the total flow, but a single compressor work flow than single work low, so each Compressor productivity has dropped. The total compressing flow in parallel with two machines is smaller than the flow with independent work, and the flow rate increases in parallel, the loss of pipeline resistance will increase, and the safety of the unit will also be affected. 1.2 unit running status is not good. This problem is mainly manifested in the compressor operating cycle is difficult to meet the design requirements, unstable summer operation, multiple faults and so on, some compressor equipment long-term operation, mechanical, electrical and instrumentation components such as multiple failures, the use of after-maintenance approach is difficult to achieve the crew Time trouble-free stable operation, prone to failure, leading to compressor parking, affecting production safety. 1.3 high cost of operation and maintenance. The old compressor maintenance costs are high, when the two machines are in parallel, both sets of compressors should be backed up with a set of fault multiple and dual backup costs, but also caused some spare parts redundancy and waste. 2 compressor energy regulation and energy consumption Compressors are generally based on the design requirements of actual demand cooling capacity, under normal circumstances are compressor work throughout the year, across the summer and winter extreme weather, so facing a relatively complex external environment, and the actual conditions and design inevitable There is a certain deviation, so the compressor power to have appropriate surplus. At this stage, the compressor energy regulation mainly intermittent control operation, suction adjustment, cylinder unloading, bypass adjustment and stepless speed regulation and other types. Compressor intermittent operation is more common mode of operation, the ambient temperature is higher than the set temperature, the compressor will start running, the ambient temperature drops below the set temperature, the compressor will stop working. This mode of operation applies to the ambient temperature is relatively stable, the load is not large, but the actual use of the process, not at any time the ambient temperature tends to be stable. Extreme weather and complex work environment, a variety of production activities will result in cold load changes, frequent temperature changes, the engine frequently start and stop, will result in greater energy waste. The generator instantaneous current will pollute the power grid, increase the power grid fluctuations, compressor life will be affected. Therefore, the frequency conversion technology has also been more used in the compressor. 3 compressor energy saving Under certain operating conditions, the compressor cooling capacity and the mass flow is proportional to the basic idea of ​​frequency control is to change the compressor motor speed to adjust the mass flow, thereby changing the total unit cooling capacity. System power consumption and characterization of regulation, but also by the cooling capacity of the refrigeration system, the cooling system to reduce the heat load, cold storage control system will reduce the compressor speed through the inverter, thereby reducing the refrigerant mass flow, reducing the refrigerant condensation temperature, l High evaporation temperature, thereby reducing the total cooling capacity. And frequency motor speed down, reduce the friction coefficient of the compressor, adiabatic efficiency also will increase, to reduce the K value is also helpful. Part load conditions, the compressor motor speed decreased, KQ reduced, can significantly reduce system power consumption. Compressor energy-saving technology 1 compressor control process parameters optimization 1.1 suction pressure adjustment. Select the appropriate suction pressure can effectively reduce the compressor power consumption. Under normal circumstances, the lower the suction pressure, the greater the energy consumption, especially the suction pressure of a section of the compressor. Therefore, the compressor suction pressure can be appropriately increased, and an effective cyclone inlet separator is added during one suction to further eliminate the resistance of the air intake pipe network and obtain a higher suction pressure while ensuring adequate treatment gas volume. 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