Differences between cartridge pumps, multi-stage pumps, and high-speed centrifugal pumps
Thread Content
What is the difference between vertical multi-stage bag pumps and multi-stage centrifugal pumps? It is designed to use vertical multi-stage sac pump for the transport of propylene in the liquid state at normal temperatures; if the net positive suction head is sufficient, vertical multi-stage sac pumps, multi-stage centrifugal pumps, and high-speed centrifugal pumps have the lowest failure rates, especially with regard to seal leakage. Also, do all vertical multi-stage sack pumps have a balanced drum structure? Why do the mechanical seals of multi-stage centrifugal pumps with a balanced disc structure leak easily, while those with a balance drum don’t?
This one. This one. . . . . . . Well, it depends on the quality and design; it’s not necessarily the case that multi-stage pumps leak more
1. The vertical multi-stage sack pump is also a centrifugal pump; the only difference is that, in its vertical configuration, there is only 1 bearing per set. As a result, only 1 seal is required. Moreover, because it is vertical, its own weight helps to balance part of the axial force. 2. Personally, I think among various types of pumps, the vertical multi-stage sack pump is the most useful. 3. The main reason for leakage in the mechanical seal of multi-stage centrifugal pumps with a balance disk structure is that the axial displacement of such pumps during operation is greater than that of pumps using a balance drum. If the medium is clean and free of residues, a balance drum can be considered.
Are all multi-stage cartridge pumps equipped with balance drums? For multi-stage pumps used for transporting light hydrocarbons at room temperature, the performance here has not been good; the mechanical seals tend to leak, but things improved after switching to dry gas seals. Are the force balance and mechanical seal of the multi-stage cartridge pump the same as those of a multi-stage centrifugal pump?
Are all multi-stage cartridge pumps equipped with balance drums? For multi-stage pumps used for transporting light hydrocarbons at room temperature, the performance here has not been good; the mechanical seals tend to leak, but things improved after switching to dry gas seals. Are the force balance and mechanical seal of the multi-stage cartridge pump the same as those of a multi-stage centrifugal pump?
I used to work at the ITT pump factory, where I was responsible for pump production and after-sales maintenance services. As far as I know, for processes involving ethylene, propylene, LNG, and other similar substances, most of the pumps used are vertical multi-stage sac pumps manufactured by ITT in the United States; these pumps and their sealing systems operate very stably. If you would like to learn more about ITT’s bag pump, you can find the product manual for this pump in the library on my website; I hope it will be helpful to you. www.goods-pumps.com
Is it possible that the gap between the balance disc and the balance plate isn’t adjusted properly? It’s just a guess of mine