Trading and engineering company focusing on process pumps
Centrifugal pumps for efficient pumping of low-viscosity liquids in industrial applications. Wide range and customized solutions.
Centrifugal pumps is a type designation that covers a wide range of pump models that you will find at Copenhagen pump under All Centrifugal Pumps or separately under each brand. Centrifugal pumps therefore cover a spectrum of pumps with different properties for different applications. However, what they all have in common is that they are based on the same pump principle, the centrifugal pump principle.
In the centrifugal pump, liquid is sucked in at the impeller's center. The liquid is then directed via guide vanes 90 degrees to the direction of suction and is thrown by centrifugal force towards the outer edge or periphery of the impeller. It is commonly said that in a centrifugal pump, speed energy is converted into pressure energy. There is always a connection between pressure and suction side via the fluid in a centrifugal pump. Therefore, a change at any one point affects the entire system on both the pressure and suction side. Centrifugal pumps are basically available with one impeller, called singlestage pumps, and with several impellers placed in series, called multistage pumps. The centrifugal pump pumping curve expresses the pump's ability to generate differential pressure as a function of capacity. In addition, the Centrifugal pump pumping curve shows the relationship between performance and power consumption and NPSH value.
It is important that a centrifugal pump is dimensioned so that the system's NPSH (A) value is always greater than the pump's NPSH (R) value. This is the balance that ensures that the centrifugal pump does not cavitate.
At Copenhagen Pump, we can help you troubleshoot and adjust pumps.
Centrifugal pumps can be connected in series or parallel. In addition, centrifugal pumps should always be monitored with differential pressure measurement and secured against dry running and operation against closed valves. It is also a good idea to regulate the frequency/speed of your centrifugal pumps and to monitor their capacity.
The purpose of the centrifugal pump is to provide a fluid with the energy needed to overcome the pressure loss created by the fluid's velocity due to friction losses along the pipe wall as the fluid is transported from A to B.
Almost all types of liquids can be pumped with a centrifugal pump, however, the performance of a centrifugal pump is severely limited by the viscosity of the liquid. In practice, this means that pumps are usually used for applications with a viscosity up to about 200 m.Pas. This corresponds to the viscosity of a drinking yogurt. After that, other pumping technologies are used, collectively known as positive displacement pumps.
A centrifugal pump adds value by being reliable and usually simple in its construction.
We use centrifugal pumps for pumping water and pressure boosting in households, for pumping wastewater, food, petrochemical products and much more. About 20% of the world's energy consumption is used for pumping.
Quality and price are linked to durability. Cheap centrifugal pumps are attractive from a short-term perspective while high-quality pumps are attractive from a sustainability and durability perspective.
Simple centrifugal pumps can usually be delivered in around 1-2 weeks, while more complex pump designs often have a delivery time from around 4 weeks onwards.
The complexity of the centrifugal pump usually determines how easy it is to access spare parts. In general, however, it is always the shaft seal that fails in a centrifugal pump. There is a wide range of shaft seals on the world market and you can often source these shaft seals from different seal suppliers.
