How can we simply understand why compressors should not operate with liquid inside them, and why pumps should not suffer from cavitation?
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Generally, compressors should not operate with liquid present, while pumps should not experience cavitation； What causes this, and how can it be understood simply?
A compressor is used to compress gases. Liquid presence can cause liquid hammer, damaging the machine. Compressors with oil lubrication can cause the lubricating oil to emulsify, etc. Cavitation in a pump can damage the impeller, cause vibration in the pump, and lead to a decrease in flow rate.
Are compressors of all types generally not allowed to operate with liquid inside? Such as screw-type, Roots, etc
The screw type can contain liquid, mainly serving for cooling and sealing purposes. Some spray oil, while others spray water.
In simple terms, it is done to ensure the safety of the equipment; excessive liquid can cause damage to the impeller, which in turn affects the axial force. Cavitation can also damage the blades of the pump, preventing it from functioning properly
Both liquid carryover and cavitation cause significant damage to equipment; if the impeller operates under such conditions for an extended period, it will be damaged, so such conditions must be strictly avoided
In one sentence: Liquids cannot be compressed, while gases can. Physical! ! !