Centrifugal compressor is a high-pressure, large-flow centrifugal gas compression equipment and a high-end industrial fluid machinery. Its core function is to significantly pressurize and compress gas to meet the high-pressure gas demands in chemical, energy, power and other fields. It features the highest technical content and the most complex structure among the three types of core centrifugal gas equipment.

It also operates on the principle of centrifugal force, adopting a multi-stage impeller series design with an extremely high rotating speed. The gas pressure is greatly increased through continuous multi-stage compression with a compression ratio above 3, delivering an obvious gas compression effect. Remarkable temperature rise occurs during operation, so it must be equipped with intercoolers, oil lubrication systems, precision sealing systems and high-precision bearings. With an exquisite overall structure, it imposes extremely strict requirements on manufacturing processes.

Its core performance advantages include high pressure, large flow rate and high efficiency. The outlet pressure can reach above 0.3 MPa, even up to the ultra-high pressure level. It runs stably with large displacement and is suitable for long-term continuous operation. It can compress various industrial gases such as air, nitrogen and natural gas, with excellent sealing performance and energy efficiency.

It is mainly applied in high-end heavy industry fields, such as cracking gas compression in petrochemical engineering, pressurization for natural gas transportation, oxygen production by air separation units, synthetic ammonia industry, air supply for large power station boilers, and gas compression in the nuclear industry. It is an indispensable core equipment in the modern energy and chemical system.

This document consists of four independent articles, elaborating on three core centrifugal gas equipment (centrifugal fans, centrifugal blowers and centrifugal compressors), as well as the key knowledge of turbine generators. The content is concise and refined, clearly distinguishing the functions, characteristics and applications of each equipment, meeting the needs for quick understanding and basic popular science.