The industrial applications of pumps have greatly changed the way machines work. At the helm of this transformation is the high pressure positive displacement pump (abbreviated as the PD pumps). Ever since their discovery, they have constantly been applied in machinery both in the traditional and modern setting.
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.
The efficiency and rate of flow of pumps is hugely dependent on two physical properties, that is, the viscosity of fluids and the pressure. The preference of PD pumps stems from their ability to maintain a constant flow rate given the ever changing physical properties.
Their applications are spread all over the facets of industrialization. One major use can be seen in the oil, gas and petroleum industry. Centrifugal pumps cannot move fluids that contain large amounts of gas. PD drives however have the capabilities of handling fluids with up to 50 percent gas without requiring any modification. Specialized PD drives can transmit fluids with up to 95 percent gas.
This desirable property has been effectively applied. Initially the extracted crude oil contained oil, gas, sand and water. Separation had to be done prior to transportation and each element mentioned above had to be transported separately. This was in essence quite expensive. PD drives however enabled the petroleum industry to tremendously reduce the cost of offshore oil production since there was no need of separating the initial mixture before moving it.
Its applications can also be extended to the chemical process industry. These include the pharmaceuticals, food and beverage production and biotechnology. A typical chemical process is usually accompanied by major fluctuations in the physical properties of the initial mixture such as viscosity. Since PD pumps maintain a constant flow rate despite these unpredictable changes, it is the most suitable for transmitting the fluid through the reaction chambers.
Paper mills usually dissolve the wood fibers and the resulting solution is used as a fuel for the boilers. This fuel needs to be pumped at a consistent rate. Viscosity of this solution keeps changing as it is burned while pressure also fluctuates wildly due to clogging in some passageways and erosion. A PD drive is therefore vital in ensuring that a constant rate of flow is maintained since irregular amounts of heat can distort the final quality of paper.
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.
The efficiency and rate of flow of pumps is hugely dependent on two physical properties, that is, the viscosity of fluids and the pressure. The preference of PD pumps stems from their ability to maintain a constant flow rate given the ever changing physical properties.
Their applications are spread all over the facets of industrialization. One major use can be seen in the oil, gas and petroleum industry. Centrifugal pumps cannot move fluids that contain large amounts of gas. PD drives however have the capabilities of handling fluids with up to 50 percent gas without requiring any modification. Specialized PD drives can transmit fluids with up to 95 percent gas.
This desirable property has been effectively applied. Initially the extracted crude oil contained oil, gas, sand and water. Separation had to be done prior to transportation and each element mentioned above had to be transported separately. This was in essence quite expensive. PD drives however enabled the petroleum industry to tremendously reduce the cost of offshore oil production since there was no need of separating the initial mixture before moving it.
Its applications can also be extended to the chemical process industry. These include the pharmaceuticals, food and beverage production and biotechnology. A typical chemical process is usually accompanied by major fluctuations in the physical properties of the initial mixture such as viscosity. Since PD pumps maintain a constant flow rate despite these unpredictable changes, it is the most suitable for transmitting the fluid through the reaction chambers.
Paper mills usually dissolve the wood fibers and the resulting solution is used as a fuel for the boilers. This fuel needs to be pumped at a consistent rate. Viscosity of this solution keeps changing as it is burned while pressure also fluctuates wildly due to clogging in some passageways and erosion. A PD drive is therefore vital in ensuring that a constant rate of flow is maintained since irregular amounts of heat can distort the final quality of paper.
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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