After being confused for a long time regarding some issues related to the base of the pump,
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Hello, everyone~ The pump and the motor are integrated and connected vertically. The inlet and outlet flanges of the pump are DN100. Flow rate: 1003/h, head: 25M, speed: 2900r/min, efficiency: 73%, motor power: 11kw, NPSH: 4m, weight: 314Kg. I encountered the following questions at work: ① Can an integrated pump be installed on two pieces of 10# channel steel, secured with expansion bolts? Can a channel steel be used without grouting? (Because from what I’ve learned before, pumps are usually constructed by pouring concrete, and they need to be placed about 100 units above the ground level; so I’m not entirely sure.) ② The leader of the business department suggested that a rubber pad about 10 mm thick should be used as a separator between the channel steel and the pump’s base, claiming that this would help reduce vibrations (he said he found this information online). (Is this necessary, since pumps and motors don’t require alignment or straightening?) There is also the issue of coaxiality: once the rubber gaskets age outdoors and become deformed, causing the pump to be uneven, could there be other subsequent problems? I hope that those with more experience can help me analyze this from either an experiential or technical standards perspective. Thank you very much! ! {:1_90:}
The pump is a vertical pipeline pump; using two pieces of 100-mm steel channels as a foundation is indeed a rather simple approach, and it does not help to eliminate vibrations. Especially since the steel channels are flexible, the motor’s swinging amplitude becomes quite large. If rubber pads are used, rubber flexible connectors must be added at the inlet.
It is best to use a concrete foundation for pump units; in cases where such a foundation is not available, channel steel expansion bolts can also be used, though this will definitely result in greater operational vibrations. I’ve seen fans whose bases and foundations use rubber blocks; the inlet and outlet of such fans are connected with flexible connections. As for pumps, I haven’t seen that approach used
As a supplementary note: the flow rate is 100 m3/h, and it is directly connected to the expansion joint flange at the pump outlet...
Thank you to the two people above for their answers! As an additional note: the flow rate is 100 m3/h, and it is directly connected to the expansion joint flange at the pump’s outlet... I wonder if the deformation of the rubber gasket could cause greater damage to the pump equipment...
I don’t think it’s possible; according to the standards, the foundation of a pump should have a weight three times that of the pump itself