Compresor de aire de tornillo eléctrico horizontal de compresión de doble etapa

18 Abr 2025

How do the core components of an electric screw horizontal double-stage compression air compressor work together to achieve gas compression?

En compresor de aire de tornillo eléctrico horizontal de doble etapa de compresión features two sets of intermeshing male and female rotors arranged horizontally, acting as the core components. The first-stage rotors initially compress the air, raising its pressure to a certain level. The compressed air then enters an intermediate cooler, where its temperature drops through heat exchange, reducing the energy required for the subsequent compression. Subsequently, the air enters the second-stage rotors for further compression. Synchronous gears ensure the coordinated rotation of each rotor set. Lubricating oil circulates continuously, lubricating the rotors, sealing the gaps between components, and dissipating heat, enabling all components to work in harmony and efficiently complete the two-stage gas compression process.

How does the electric motor convert electrical energy into mechanical energy to drive the compression process in this type of air compressor?

The electric motor serves as the power hub of the air compressor. Once connected to the power supply, an electric current courses through the stator winding, generating a powerful rotating magnetic field. Based on the electromagnetic induction principle, this magnetic field induces an electric current in the rotor winding, compelling the rotor to rotate under the influence of electromagnetic force, thus converting electrical energy into mechanical energy. The motor’s output shaft is connected to the main drive shaft of the compressor via couplings or belts. This drive shaft, in turn, transfers rotational power to the first-stage and second-stage rotors through a transmission system. By precisely calibrating the motor’s rotational speed, torque, and optimizing the transmission mechanism, the rotors can maintain stable operation at the appropriate speed and power, continuously driving the double-stage gas compression process.

What are the key compression stages and state changes that gas experiences in the working principle of this air compressor?

Gas in the electric screw horizontal double-stage compression air compressor undergoes a series of distinct stages. In the first-stage suction phase, the tooth grooves of the first-stage rotors open to the air inlet, and air enters the enclosed spaces formed by the rotors and the casing under atmospheric pressure. As the rotors rotate, the volume of these spaces decreases, compressing the air, which leads to a significant increase in pressure and temperature. After the first-stage compression, the hot, high-pressure air flows into the intermediate cooler. Here, heat is dissipated to the surrounding environment, reducing the air’s temperature while maintaining its increased pressure. Then, in the second-stage compression, the cooled air enters the second-stage rotors. As the rotors continue to rotate, the air is compressed again, further increasing its pressure. Finally, in the exhaust stage, the highly compressed air is discharged from the outlet into the air storage tank or the gas-using system. During the exhaust process, due to heat transfer in the pipeline and equipment, the air’s pressure and temperature experience a slight decline.

Compared with other types of air compressors, what unique advantages does the working principle of this air compressor have in terms of efficiency improvement?

Compared with single-stage air compressors and other traditional types, the electric screw horizontal double-stage compression air compressor has remarkable efficiency advantages. Its double-stage compression with intermediate cooling significantly reduces the overall compression work. By cooling the air between stages, it minimizes the impact of temperature rise during compression, approaching an isothermal compression process, which is more energy-efficient than adiabatic compression. Additionally, the continuous and smooth operation of the screw rotors reduces mechanical friction and inertial losses compared to reciprocating compressors. The optimized tooth profiles of the rotors ensure a more stable and efficient gas compression process. Moreover, advanced control systems can adjust the motor speed according to the actual air demand, achieving variable air displacement operation and avoiding energy waste during low-demand periods, thus greatly enhancing the overall operating efficiency and making it an excellent choice for industrial applications that require high-pressure and large-volume air supply.

Conclusión

The electric screw horizontal double-stage compression air compressor depends on two sets of horizontally arranged rotors and the power transmission of the electric motor to execute the double-stage gas compression process. With the assistance of an intermediate cooler and lubricating oil, all components operate in close cooperation to ensure the stable operation of the compressor. Its unique double-stage compression principle, combined with advanced cooling and control technologies, provides significant advantages in energy efficiency and compression performance compared to other air compressors. This makes it highly suitable for various industrial scenarios that demand high-pressure, stable, and efficient air sources, playing an increasingly important role in modern industrial production.