When the pump is connected in parallel, will the head and flow change?
Depends on how you do it.If you have a pump, the original network is the same, you add a pump, the result is the head and flow increases, the efficiency also changed, increase the number of head and flow, depending on the network characteristics, network characteristics such as steep increase, economy is also poor, which is not recommended. In fact, the actual flow of two pumps plus the actual lift equal, the problem is that the head, flow point of operation has changed.If it is new design, according to the required flow calculation of the required head, according to the head, half of the flow to select the pump, that is, two pumps flow volume, lift equal.
Parallel pump should lift the same head, the flow is the sum of the flow of a single pump.
2 pumps parallel, lift the same, pump head is not stacked?;Answer: the head can not be superimposed, that is, a lift and a pump, but the pumping speed (flow) is two times a taiwan.2 pumps in series, the same flow, pump head is not stacked?.Answer: the head can be superimposed, that is, the pump head is two times as much as a pump, but the pump speed is the same as that of a pump.A pump is a machine that transports liquids or pumps liquids. It will be the prime mover of the mechanical energy or other external energy transfer to the liquid, the liquid energy increase, mainly used to transport liquids including water, oil, alkali liquid, emulsion, suspension emulsion and liquid metal, but also transport liquid, gas mixtures and liquids containing suspended solids. Pump performance of technical parameters are flow, suction, lift, shaft power, water power, efficiency, etc.; according to the different principles of work can be divided into volume pumps, vane pumps and other types. Displacement pump is to use its studio volume changes to transfer energy; vane pump is to use the rotating blade and water interaction to transfer energy, there are centrifugal pumps, axial flow pumps and mixed flow pumps and other types.
