Could there be safety issues if air gets into the bearing housing?
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I’ve only started working at the chemical plant not long ago, and there are many things I don’t understand. I would like to ask the experts: is it dangerous if air gets into the bearing housing of a centrifugal compressor? Will it have any impact if air gets into the bearing housing of a centrifugal pump? I saw the technicians changing the lubricant in the pump (I’m not sure what type of pump it is); they opened the cover on the bearing housing. After changing the oil, they closed the cover again. If air got in, it shouldn’t cause any problems, right? I asked the masters, and they said there was no problem.
No problem. －－－－－－－－－－－－－
Dear, there’s definitely no problem with this; lubricant serves to lubricate and cool the moving parts.
Generally, it’s not a problem, unless the concentration of corrosive gases in the air is too high; only in that case can it cause corrosion to the bearings over time.
No problem – read more, learn more, think more
Is there a vacuum inside the bearing housing? Our compressor is making a hissing sound
Generally, there’s no problem; just read more, learn more, and think more. Unless the concentration of corrosive gases in the air is too high, it will only cause corrosion to the bearings over time
There’s definitely no problem with that. In fact, many bearing housings are equipped with breather caps, whose purpose is to allow air to flow between the inside and outside of the bearing housing.
When the equipment is in operation, the temperature of the lubricating oil rises, which generates vapor that increases the pressure inside the oil tank; this can cause oil to leak from the shaft seals. Therefore, a breathing device is necessary. For pumps with smaller oil tanks, a breathing cap is usually sufficient. Large compressors typically have a venting device on their oil tanks to prevent excessive pressure from interfering with the return of oil
It’s not a problem for short periods of time, but over an extended period, moisture in the air (when humidity is high) can corrode the bearings
By the inner part of the fuel tank, do you mean the inside of the bearing housing? Why does high pressure cause poor return flow of oil? The pressure inside the bearing housing is high, while the pressure in the lubricating oil tank remains generally constant. I thought it would be more convenient for the oil to return, right? Is it my understanding that’s wrong? Please help me clarify this