Do the instruments at gas stations use instrument air? If it’s used, where will the air source come from!
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Hello, experts. May I ask if the instruments at CNG stations use instrument air? If it’s used, where will the air source come from? New L-CNG units no longer come equipped with compressors! Correct answers will be generously rewarded!
Air can be blown in directly using an air pump.
For safety, nitrogen should be used! ! Add nitrogen generation equipment! !
It should be used, right? Otherwise how can the pipelines be replaced, and where will the nitrogen come from?
I’m not sure about gas stations, but for LNG here, we don’t need instrument air; self-acting control valves are used for pressure regulation, and electric ball valves are used for emergency isolation. For regular replacement, liquid nitrogen is transported to the site using a tank truck and then introduced into the system via a vaporizer for replacement.