Chemical pump head and flow calculation Chemical pumps in the actual flow of work by the head restraint, the higher the actual head, flow decreases. If the head has been set, but want to reduce the flow , the simplest way valve control available . To regulate the flow , but also saving approach is the use of frequency control, reduce speed to reduce traffic.A chemical pump head , flow and power are important performance parameters investigated pumps :1. Flow of chemical pump flow , also known as the quantity of water , it is the number of pumps deliver water in a unit of time . Q symbolically expressed in units of liters / sec , m / s, m / h. 2. Chemical lift pump head refers to chemical pumps can raise the height of the water , usually a symbol H expressed in units of meters. Centrifugal pump head with impeller center line , divided by two parts . Chemical pump impeller from the center line to the surface of the vertical height of the water , chemical pumps that can suck up the water level, called the suction head , referred to as suction ; from the pump impeller center line to the vertical height of the water in the pool , which can pump water pressure up height , called pressurized water head , referred to the pressure away. That pump head = suction lift + pressure water head should be noted that on the nameplate means the lift pump head can produce itself , it does not contain water pipe friction caused by the loss of lift . In the selection of chemical pumps , the attention can not be ignored . Otherwise, it will be no water pumping . 3. The power unit of time , the machine is called the power of acting size . Usually represented by the symbol N . Commonly used units : kg · m / s , kW , horsepower . Usually expressed in units of motor power in kilowatts ; diesel or gasoline power units with horsepower. Power transmitted to the pump shaft power machine , called shaft power , can be understood as the pump input power , pump power generally speaking refers shaft power .Because of the friction bearings and packing ; impeller rotational friction and water ; water pump whirlpool gap out , mouth impact and other reasons . Inevitably consumes part of the power , it is not possible to pump power machine input power becomes fully effective power , which has a given power loss , that is , the loss of the effective pump power and the pump power of the pump shaft power. Second.the pump head estimation:No chemical pump head size and power relations , the series with the pump impeller and impeller diameter is related to the same power of the pump there may lift hundred meters , but the flow may be several parties , it could lift only a few meters , but traffic may hundreds of square . General rule is the same power , high lift less traffic , low lift flow, there is no standard formulas to determine the head, with your conditions of use and the factory pump model to determine.Pump outlet pressure gauge can be used to calculate , as the pump outlet is 1MPa (10kg / cm2) that lift is about 100 meters , but also consider the impact of suction pressure .Centrifugal pump , it has three lifts : the actual suction lift , the actual water pressure head and the actual head , in the case did not specify, generally considered head refers to the height difference between two water . JK industrial&equipment co.,ltd is a professional manufacturer in china and also all around the world.You can send e-mail to sales4@jkpumpbiz when you are interesting or in problem.It is our pressure to service with you.
Posted on: Tue, 23 Dec 2014 09:58:01 +0000
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