What is a centrifugal air compressor

What is a centrifugal air compressor? There are many kinds of air compressors, which are dazzling. Among them, centrifugal air compressor plays an important role in large-scale gas field with its unique performance advantages. Many people know that centrifugal air compressor is good, but they don’t know if their scene is suitable. Today, Turbo-Tech shows you the principle, components and advantages of a centrifugal air compressor. After reading it, you will have a bottom.
What is a centrifugal air compressor?
According to Turbo-Tech, centrifugal air compressor is a kind of power equipment which uses high-speed rotating impeller to generate centrifugal force and accelerate air into high-pressure gas. Different from screw machines and piston machines that compress air by volume change, centrifuges take the “speed route”-first accelerate the air to a very high speed, then slow down the high-speed airflow, and the speed can be converted into pressure energy, thus realizing compression.
Three key components of centrifugal air compressor:
Impeller: the core working part, which gives air kinetic energy by high-speed rotation;
Diffuser: converts kinetic energy of high-speed airflow into pressure energy;
Volute: collect compressed gas and transport it to the next stage or outlet smoothly;
Single-stage compression pressure is limited, and industrial applications usually adopt multi-stage series connection, and each stage contains the combination of “impeller+diffuser+volute”, which is pressurized step by step to achieve the target pressure.
What are the advantages of centrifugal air compressor? What’s so special about it?
Continuous gas supply: there is no reciprocating motion, the air flow is continuous, and the pressure fluctuation is small;
Oil-free design: there is no need for lubricating oil in the compression chamber, and the exhaust can be directly oil-free;
Atmospheric volume: the exhaust volume of a single machine can reach hundreds to thousands of Nm3/min；;
Long life: few moving parts, few wear points, and the design life is usually more than 30 years;
Which industries is centrifugal air compressor suitable for? The following include but are not limited to:
1. Petrochemical and oil refining
Compressor is one of the “hearts” of refining, and centrifuge is responsible for the supply of compressed air for catalysis, hydrogenation, gas stripping and other processes. Centrifugal air compressor is the best choice for large air volume and stable requirements.
2. Power industry
Compressed air is needed for desulfurization and denitrification, fly ash transportation and air cooling island in thermal power plants. Matching of air volume and stability of centrifugal air compressor.
3. Supporting air separation equipment
The production of industrial gases (oxygen, nitrogen and argon) depends on the air separation device, and the raw material of air separation-air-needs the centrifugal air compressor to provide it.
4. Iron and steel metallurgy
Blast furnace coal injection, converter steelmaking, continuous casting and other links consume a lot of gas, and centrifugal air compressor is responsible for stable gas supply.
5. Coal chemical industry
In coal-to-oil and coal-to-gas projects, compressed air is used in gasification, purification and other sections.
6. Aerospace
Scenes such as wind tunnel test and precision assembly require extremely high quality and stability of compressed air.
7. pharmacy
Oil-free centrifugal air compressor provides clean air source for drug production and avoids the risk of oil pollution.
8. Food and drink
The carbonation of carbonated drinks and beer and the power of packaging line are inseparable from clean compressed air.
9. Electronic semiconductor
Precision processes such as chip manufacturing and display screen bonding require zero-oil ultra-clean air, and only oil-free centrifugal air compressor can be competent.
10. Automobile manufacturing
Large production lines, such as welding, painting and final assembly, consume an amazing amount of gas, and centrifuges are common configurations.
11. Glass and ceramics
Combustion-supporting of glass melting furnace, power supply of ceramic press and stable gas volume are the keys.
Back to the question at the beginning: What is a centrifugal air compressor? It is a kind of equipment which is based on centrifugal force and realizes air compression through speed-energy conversion. With the advantages of large volume, high efficiency and low maintenance, it has become the first choice for large-scale industrial gas. Understand this, and you will have basic judgment when selecting air compressors.