Advantages of Twin Screw Compressors

Twin screw compressor is a kind of high-efficiency and energy-saving compressed air equipment, which is widely used in industrial production, laser industry, construction and other fields. This article mainly introduces its basic characteristics and advantages.

1. Structure

Twin screw compressor is composed of two intermeshing screws, one is the active screw and the other is the driven screw. Both rotate simultaneously under the drive of the motor, and the gas is sucked, compressed and discharged through the change of the meshing gap. The structure of the twin screw air compressor is relatively complex, but its design is more precise and its operation stability is higher.

2. Working Principle

Twin screw compressor forms a closed compression chamber between the screw and the inner wall of the casing through the meshing movement of the two screws. As the screw rotates, the volume of the compression chamber gradually decreases, thereby realizing the compression of the gas. During the working process of the twin screw air compressor, the meshing movement of the two screws is more balanced, so its noise and vibration are relatively small.

3. Advantages

3.1 High Efficiency

Twin screw compressor can provide high-efficiency compression capacity at low energy consumption. Its screw design and optimized working principle enable it to achieve an efficient compression process, thereby reducing energy consumption and improving the efficiency of the system.

3.2 Low Noise

Compared with other types of compressors, twin screw air compressors produce lower noise when in operation. This is because the screws fit very closely, reducing friction and mechanical vibration.

3.3 Wide Load Range

Twin screw air compressors have a wide load range and can meet the stable compressed air supply under different needs. It can automatically adjust its working state according to the changes in air demand to maintain the efficiency and stability of the compressor.

3.4 High Reliability

Twin screw compressors have a simple structure, few parts, and stable and reliable operation. It can operate for a long time under harsh environmental conditions, and it is relatively simple for the normal operation and maintenance of the compressor.

3.5 Easy to Install and Maintain

Twin screw compressors can be easily installed and integrated according to existing equipment and pipeline networks. At the same time, its small number of parts makes maintenance and repair easier and more economical.

3.6 Space Saving

Twin screw air compressors are usually smaller in size and occupy less space than other compressors. This makes them suitable for industrial environments with limited space and can better meet the needs of users.

4. Twin Screw VS. Single Screw

4.1 Manufacturing Cost

The screw and star wheel bearings of single screw air compressors can use ordinary bearings, which have lower manufacturing costs. Twin screw air compressors require the use of higher-precision bearings due to the large loads on the two screw rotors, and the manufacturing cost is higher.

4.2 Efficiency

In the new state, the efficiency of the accessories of single screw air compressors and twin screw compressors is basically the same, but as the running time increases, the wear of the star wheel of the single-screw air compressor will lead to reduced gas volume and reduced efficiency.

4.3 Reliability

The star wheel of the single-screw air compressor is a vulnerable part. In addition to having high requirements for the star wheel material, the star wheel must be regularly maintained. The screw rotor of the twin screw air compressor has a large load and high bearing precision, and it also requires regular inspection and maintenance.

4.4 Applicability

Single screw air compressors are suitable for high exhaust pressure occasions. Twin screw compressors are only suitable for medium and low pressure ranges due to the limitations of rotor stiffness and bearing load.

Although the initial purchase cost of a two-stage compressor is higher than that of a single-stage screw compressor, the double screw compressor is more cost-effective in terms of overall energy consumption and maintenance. However, it also depends on the working conditions. Generally, high-pressure working conditions are more suitable for two-stage compressors.

5. Application in the Laser Industry

5.1 Laser Cutting

Compressed air is used as an auxiliary gas to help blow away the molten metal and impurities in the cutting area and clean the incision. The twin screw compressor can provide continuous and stable air output in this process to ensure the efficiency and high quality of the cutting process.

5.2 Laser Welding

Compressed air is used to protect the welding area from exposure to oxidizing conditions and to maintain the welding temperature and welding environment. Therefore, the stability and reliability of the double screw compressor are particularly important here, because any instability in gas supply will have an adverse effect on the welding quality.

5.3 Laser Marking and Engraving

During laser marking and engraving, compressed air is used to remove dust and debris from the processing surface, maintain a clean working environment, and improve processing accuracy and effect. The dry and stable air flow provided by the double screw compressor is ideal for this application.

Summary

Twin screw compressors have become an indispensable and important equipment in modern industrial production due to their high efficiency and energy saving, low noise, stability and reliability, easy maintenance, wide adaptability to working conditions, intelligent control and environmental protection and energy saving.

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