Questions regarding centralized oil supply pipelines
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I’m working on another project recently that involves a centralized oil supply system designed for changing engine oil, gear oil, and spindle oil in buses. There are ten filling points in total; the farthest point from the oil storage tank is 140 meters, while the nearest is 60 meters. The maximum height difference between the various pipeline sections is 6 meters. The oil storage tank has a capacity of 5 cubic meters. The entire system is intended to be sourced from outside, but regarding the choice of oil supply pump, since the site requires pneumatic pumps, the supplier recommended using pneumatic piston pumps, arguing that such pumps are suitable for long-distance oil transfer. However, I think diaphragm pumps would be more appropriate, as they offer higher flow rates. For supplying oil to all ten points simultaneously, if the oil nozzles were opened at once, a piston pump’s maximum flow rate would only be around 60 liters per minute, which is far from sufficient to meet the demands. Moreover, diaphragm pumps are significantly cheaper than piston pumps. Do any of you have any suggestions? Should a piston pump or a diaphragm pump be used?
Recommendation: Plunger pump. Just ensure that the traffic setup allows 10 points to fire simultaneously. Besides, take a look at how small such a probability is. The plunger is more durable than the diaphragm
This post was last edited by He Xiaowo on 2017-1-6 at 11:01. In terms of durability alone, the price of piston pumps is one order of magnitude higher than that of diaphragm pumps. Additionally, these oil transfer pumps come in pairs, so that should not be a problem. The maximum flow rate for piston pumps available currently is 60 L/min; therefore, 10 units would only provide 6 L of flow. The manufacturers say that it’s not possible to have all 10 units operating at the same time, but I’m worried that I might be asked about this on site. Also, if frequent start-stop operations are required, are piston pumps really better than diaphragm pumps? Furthermore, from what I’ve found online, piston pumps are suitable for high-viscosity liquids or high-pressure spraying. Lubricating oil isn’t considered high-viscosity, while grease is
I’m not very familiar with this product; you can ask the manufacturer to recommend which model would be more suitable for you