Since the lubricating oil tank of the centrifuge unit is filled with nitrogen, is it still necessary to use a range hood? Is there any contradiction in that?
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Dear friends: Since the lubricating oil tank of the centrifuge unit is filled with nitrogen, is it not contradictory to use a range hood as well? With less nitrogen filling, an oil film is likely to form in the unit’s bearing shells, resulting in an increase in bearing temperature ； Filling with nitrogen often leads to poor return of lubricating oil, as well as oil vapor escaping from the breather cap ； I’m stuck – how should I handle this?
It seems like they are contradictory, but you can imagine that the nitrogen sealing and venting of oil tanks also form a pair of hierarchical control circuits. Each has its own focus. It is recommended that you use the pressure in the tank as a parameter, adopt a pressure control system for the tank, and implement a layered control scheme; the key is to find the equilibrium point for this pressure.
Could you send a picture? I don’t understand why the lubricant tank needs to be filled with nitrogen It’s something new; please give me your advice. Thank you!
This post was last edited by Zhongyuanren on 2020-8-5 at 16:24. Filling oil tanks with nitrogen is not a new practice; it has been around for a long time.
It should be fine to turn off the nitrogen if there is a range hood in place
When nitrogen supply is stopped, lubricating oil in contact with air can form an oil film, leading to an increase in bearing temperature. It’s mainly about finding a balance point.
Oh, that’s interesting; please share more! I’ve really never seen this before; I’d like to express my confusion regarding this new technology, so please advise me :) First of all, let’s talk about the fuel tank and fuel system as well as the source of air that comes into contact with them. This source is likely to create a negative pressure inside the oil tank due to the action of the range hood. Air enters through the dynamic seals between each bearing housing and the shaft, thereby creating a seal that prevents oil vapor and thin oil from escaping. This portion of gas containing oil vapor forms a gas channel through more than 1/2 of the cross-sectional area of the oil return pipe to return to the oil tank, and is then discharged by the range hood. This process involves creating a setup that uses gas for dynamic sealing at various dynamic sealing points. If lubricating oil needs to be protected from oxidation, nitrogen sealing chambers should be arranged in a ring shape around the bearing housings at each dynamic sealing point; nitrogen is injected there to carry away the oil vapors. But this setting is not visible in the diagram. So I still don’t understand this principle; please give me some guidance. Thank you! Furthermore, regarding the phenomena that will occur when this nitrogen is injected into the fuel tank, please refer to the explanation above.
Not afraid of being laughed at by my brother – the nitrogen system in my unit has never been activated; P
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