The role of safety valve in screw air compressor
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The small instrument air compressor used in our unit is an Ingersoll Rand screw compressor. Yesterday I accidentally saw a safety valve designed inside the unit. What is the function of this safety valve? When does it work. In addition, this kind of compressor is also designed with inlet guide vanes, but there is no specific operation control system. How does this kind of guide vane work?
The safety valve is an accessory that must be installed on positive displacement dynamic equipment. The purpose is to prevent the equipment from being damaged due to excessive pressure increase when the pipeline or equipment outlet is blocked. Gear pumps, screw pumps, reciprocating compressors, and screw compressors all need to be equipped with safety valves. The inlet guide vane can also be adjusted manually. It is easier to directly remove the inlet pipe when adjustment is needed, and then directly rotate the guide vane. I heard people from the compressor factory say that this was done before.
Reply 2# FLYTOINTER The safety valve here is the safety valve inside the unit. We designed it to automatically unload when the unit reaches a certain pressure and then use the self-starting function. In this case, how can the pressure be too high?
Reply 3# sean816 If there is a problem with automatic unloading, will the compressor be useless? You can study API 619. Many important design indicators of the compressor are related to the set pressure of the relief valve.
Generally, compressors have a fault shutdown function. If there is a problem with the relief valve, we must have taken it into consideration (overpressure shutdown)! But the compressor air storage tank must be equipped with a safety valve!