D. Balance of DG multi-stage pumps
Thread Content
At a pump industry exhibition in Shanghai, I saw pumps from one manufacturer use balance drums and horizontal plates to achieve axial force balance; all of our company’s pumps of this type utilize horizontal plates and balance pipes to achieve the same purpose. Which of these two balancing methods is more effective? Additionally, I would like to ask: in such pumps, how is the radial force balanced?
Pumps of this kind are likely to be multi-stage pumps. Similar to the principle of balance shafts or balance discs used in multi-stage pumps, one can refer to Teacher Guan’s Handbook on Modern Pump Design. Since it is a multi-stage pump, the radial forces are not as large as the axial forces; in many cases, these axial forces need not be taken into consideration. The method commonly used to counteract radial forces is the double volute design.