Thursday, September 10, 2015

Why High Pressure Process Pumps Are Highly Revered

By Daphne Bowen

Pumps are an efficient way of transmitting fluids. High pressure process pumps work by trapping an amount of fluid of a given volume and then releasing it via an outlet usually a pipe. They are widely used because the pressure has no implications whatsoever on the amount of fluid that is going to be moved. Three relevant subdivisions of the constant volume pumps are the rotary, reciprocating and linear pumps. The mechanism by which the fluid is transmitted usually determines these subdivisions.

Rotary drives are applied when the fluid to be transmitted has a high viscosity. They are not designed to run dry for long periods of time. This means that fluids such as water cannot be moved efficiently by this pump. They can however be used to pump large quantities of air and vapor but for only short periods of time. Usage is common place in machinery where they circulate lube oils through engines and turbines.

Reciprocating drives are more dynamic in that they can transmit both abrasive and viscous fluids. They work through the motion of a piston in a cylinder of fixed capacity. Their dynamism however comes at a cost since they are actually slower compared to the other mechanisms of transmission although it is highly efficient. Common place usage is in circumstances that need to transmit low volumes of the fluid but under high pressures.

Linear drives are simplistic in design but still retain their ability to perform the task required of it. One would only need a rope, a wheel and a piece of PVC piping to construct one. Since these materials are readily available, its use has spread all around the world. It serves as a pump for water from wells and boreholes.

Deriving the full potential of the constant volume drives can only be achieved when the installation is done through an elaborate means of predetermined steps. These steps are usually clearly outlined in the user manual. Every manufacturer goes out of their way to ensure proper installation is done as long as the instructions are followed.

Constructing a solid foundation is however intuitive and can be done prior to the purchase. A good foundation is based on reinforced concrete. Heavier units usually require stronger foundations. Once the unit is brought it is fitted on a steel base plate that has been fastened to the concrete slab. All that is required now is a step by step application of the user manual to complete installation.

Factors that determine the choice of the pump can be divided into two; the viscosity of the fluid and the pressure needed. Changes in viscosity can have huge implications on the flow rate and efficiency. These might be slight, huge or even moderate changes.

Changes in pressure are also a major concern and its effects on the rate of flow and efficiency cannot be understated. A pump that maintains its flow rate and efficiency even with significant changes in pressure would therefore be the ideal choice. Pressure pumps give the best value for money due to their ability to well address the viscosity and pressure concerns.

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