For a long time, pumps have changed the way machinery operates. The high pressure positive displacement pump is at the forefront of this. On the onset of its invention, it has been used in both the traditional and modern society.
The two main classes of positive displacement pumps are the rotary and reciprocating pumps. Although the underlying principle of constant flow remains the same, their dissimilarity presents itself in their functionality. Rotary drives transmit highly viscous liquids efficiently but experience difficulty in moving abrasive fluids and gases. This is largely because they require constant lubrication. Reciprocating drives are however more versatile since pumping both abrasive and viscous liquids is possible.
PD pumps way of working is entirely dependent on pressure and viscosity. They transmit fluids by trapping say an amount equal to its volume and moving it through a discharge pipe. The effect of these two properties is on the flow rate and efficiency. The main cause in their efficiency is their ability to keep a uniform flow despite unpredictable changes in discharge pressure and viscosity.
There have been numerous applications of this types of pumps. A major milestone that has been achieved is in the oil and petroleum trade. The centrifugal pump was abandoned since it could not move fluids with gas. The gas content constituted part of the crude oil along with water and sand residues. Specific designs however allowed the PD pumps to move significantly large quantities of gas. Even the most basic designs could transmit up to 50 percent gas quantities.
The properties above helped curb the cost of transmitting oil from offshore countries since oil and gas mixture could be pumped through one mechanism only.
In the field of chemical engineering, PD drives are vital to the pumping mechanisms. A standard chemical reaction results in huge changes in viscosity of the underlying mixture. This implies that other pumps such as the centrifugal types would not sufficiently carry the mixture through the reactor. PD drives will be able to transmit the mixture constantly irregardless of the fluctuations. This is the major reason why its uses extend to the pharmaceutical, foods and beverages and the biotechnology industries.
Considering the high amounts of paper in use in an economy, PD drives contribution to its manufacture is worth the mention. The entire process of paper milling is a highly regulated industry. This implies that any lag in function of a unit would in a varied number of ways hamper the production process. Pumps function is to keep a constant supply of fuel in a system. The constant changes in viscosity and clogging implies that the positive pumps would be the most suitable for the job.
In conclusion, one should have a proper understanding concerning the physical properties of fluids to be moved and the expected changes in its properties during the process. This information would be vital on deciding which type of pumps to apply.
The two main classes of positive displacement pumps are the rotary and reciprocating pumps. Although the underlying principle of constant flow remains the same, their dissimilarity presents itself in their functionality. Rotary drives transmit highly viscous liquids efficiently but experience difficulty in moving abrasive fluids and gases. This is largely because they require constant lubrication. Reciprocating drives are however more versatile since pumping both abrasive and viscous liquids is possible.
PD pumps way of working is entirely dependent on pressure and viscosity. They transmit fluids by trapping say an amount equal to its volume and moving it through a discharge pipe. The effect of these two properties is on the flow rate and efficiency. The main cause in their efficiency is their ability to keep a uniform flow despite unpredictable changes in discharge pressure and viscosity.
There have been numerous applications of this types of pumps. A major milestone that has been achieved is in the oil and petroleum trade. The centrifugal pump was abandoned since it could not move fluids with gas. The gas content constituted part of the crude oil along with water and sand residues. Specific designs however allowed the PD pumps to move significantly large quantities of gas. Even the most basic designs could transmit up to 50 percent gas quantities.
The properties above helped curb the cost of transmitting oil from offshore countries since oil and gas mixture could be pumped through one mechanism only.
In the field of chemical engineering, PD drives are vital to the pumping mechanisms. A standard chemical reaction results in huge changes in viscosity of the underlying mixture. This implies that other pumps such as the centrifugal types would not sufficiently carry the mixture through the reactor. PD drives will be able to transmit the mixture constantly irregardless of the fluctuations. This is the major reason why its uses extend to the pharmaceutical, foods and beverages and the biotechnology industries.
Considering the high amounts of paper in use in an economy, PD drives contribution to its manufacture is worth the mention. The entire process of paper milling is a highly regulated industry. This implies that any lag in function of a unit would in a varied number of ways hamper the production process. Pumps function is to keep a constant supply of fuel in a system. The constant changes in viscosity and clogging implies that the positive pumps would be the most suitable for the job.
In conclusion, one should have a proper understanding concerning the physical properties of fluids to be moved and the expected changes in its properties during the process. This information would be vital on deciding which type of pumps to apply.
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