What is the purpose of setting a pressure difference between the oil pressure and the nitrogen shielding gas in a reciprocating compressor?
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Our unit has newly installed a Class 2 small oil-free pump compressor. There is a pressure gauge for the oil pressure and nitrogen shielding gas; I don’t understand what its purpose is. I hope fellow sailors can help explain it.
I’m not quite sure which one you’re referring to It’s better to upload a picture. There is a pressure gauge for the oil pressure; it seems that there isn’t a pressure gauge for nitrogen protection, but there is a pressure gauge, with a pressure of around 2 kilograms
It’s a differential pressure gauge, with oil pressure on one side and nitrogen shielding gas on the other. What was the original intention behind installing this differential pressure gauge?
It’s simple: low pressure fails to provide protection. High pressure can leak into the oil pipes, affecting the cooling effect. It will also cause oil to spill out,,,