2026-04-13Views：
Air compressors are not pressure vessels. The following are the main differences between air compressors and pressure vessels:
definition:
air compressor: A device used to compress air or gas and increase its pressure. It increases the pressure of the gas by increasing the density of air molecules. The main function is to compress a large amount of gas into a smaller volume to provide high-pressure gas or power.
Pressure vessel: refers to the closed equipment containing gas or liquid and bearing a certain pressure. The design, manufacture and use of pressure vessels need to follow certain safety standards and codes to ensure that they can withstand the expected pressure and ensure safety.
Structure:
air compressor: It is usually composed of the compressor itself, the motor, the cooler, the oil circuit system and other parts. It is a kind of mechanical equipment.
Pressure vessel: It is mainly composed of the vessel itself and supporting valves, pipelines, instruments, etc., with pressure-bearing function.
Use:
air compressor: It is mainly used to output compressed air and gas to the production equipment to realize the compressed air and gas required in the production process.
Pressure vessel: mainly used for storing materials or storing liquid, gas, gas mixture and other substances, widely used in petroleum, chemical industry, metallurgy and other fields.
To sum up, although air compressors and pressure vessels are functionally related to pressure, there are obvious differences in definition, structure and use. An air compressor is a mechanical device used to compress air and gas, while a pressure vessel is a closed container that can withstand a certain pressure. Therefore, air compressors do not belong to the category of pressure vessels.
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