Solid Wood Kitchen Cabinet,Solid Wood Cabinets,Real Wood Cabinets,Real Wood Kitchen Cabinets Ningbo Oulin Import&Export Co.,Ltd. , https://www.oulin-oversea.com
Pump series and parallel operation
Pump series operation When using a pump can not achieve the required lift, two or more pumps with the same characteristics can be connected in series, as shown in Figure 2-103, but it is not generally recommended. Series operation is generally only applicable to vane pumps, such as centrifugal pumps; generally does not apply to positive displacement pumps, such as reciprocating pumps. It can be seen that when the two pumps are connected in series, the lift and flow rate increase when the system characteristic curve is constant, and the increase procedure is related to the system characteristic curve. Working in tandem should take into account the follow-up of the pump body, the pump shaft strength and seal, pump work in series matching motor parameters should be selected in series conditions power. Today's latest valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! Parallel operation of the pump When using a water pump can not meet the flow requirements, you can use two or more of the same characteristics of pumps in parallel, see Figure 2-104, parallel operation for vane pumps, but also for positive displacement pumps . When two pumps are connected in parallel, the lift and flow rate increase when the system characteristic curve is constant, and the increase degree is related to the system characteristic curve. For some large pumps that need a spare pump, two pumps (50% of each flow rate) can be used in parallel. One pump is ready for use, that is, two separate ways. For some large pumps, two pumps can be used in parallel, each with the required flow of 65% to 70% (pump not equipped). When a pump is out of service, the system still has 65% to 70% of the flow of the supply. Reciprocating pump parallel operation is actually quite a multi-cylinder pump, but a large number of motors to the installation and removal of more difficult. Therefore, should be preferred multi-cylinder pump, pump can also choose more than one parallel, with a motor-driven.