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Helico-axial Pumps (Centrifugal Displacement Pump) Helico-axial Rotodynamic pumps are multiphase centrifugal pumps used in subsea pumping. Centrifugal pumps use a different concept of fluid transfer from positive .
When it comes to pumping systems, two common types of pumps are the centrifugal pump and the reciprocating pump. Both serve the purpose of moving fluids from one place to another, but they operate in very different ways and have distinct advantages and disadvantages. In this article, we will explore the key differences between centrifugal pumps and reciprocating pumps across various categories to provide a comprehensive understanding of their functionalities.
When we talk about pumps first definition that comes to mind is that it delivers water or other liquid from one place to another place. A pump is a device that is used for lifting the liquid from the ground surface and delivering it to the topmost upper surface. The pump converts mechanical energy into hydraulic
Positive Displacement Pumps Diagram
Positive displacement pumps, including reciprocating pumps, work by trapping a fixed amount of fluid and then forcing it into a discharge pipe. This results in a continuous flow of fluid at a constant rate. The diagram for a positive displacement pump illustrates this mechanism, showcasing how the fluid is moved in a controlled manner.
Centrifugal Pump vs Reciprocating Pump
One of the fundamental differences between centrifugal pumps and reciprocating pumps lies in their operating principles. Centrifugal pumps rely on the rotation of an impeller to impart kinetic energy to the fluid, which is then converted into pressure as the fluid moves through the pump. On the other hand, reciprocating pumps use a piston or diaphragm to create a back-and-forth motion that pushes the fluid through the pump.
Indicator Diagram of Reciprocating Pump
The indicator diagram of a reciprocating pump provides a graphical representation of the pressure changes within the pump cylinder during the pumping cycle. This diagram helps in analyzing the efficiency and performance of the reciprocating pump by showing the pressure variations at different stages of the pumping process.
Single Acting Reciprocating Pump Working
In a single-acting reciprocating pump, the piston or plunger moves in only one direction, either up or down, to displace the fluid. As the piston moves, it creates a vacuum or pressure in the pump chamber, allowing the fluid to enter or exit the chamber. This uni-directional movement is characteristic of single-acting reciprocating pumps.
Characteristic Curve of Reciprocating Pump
The characteristic curve of a reciprocating pump illustrates the relationship between the pump's flow rate and the differential pressure it can generate. This curve helps in determining the pump's performance across various operating conditions and aids in selecting the appropriate pump for a given application based on the desired flow and pressure requirements.
Characteristics of Reciprocating Pump
Reciprocating pumps are known for their high pressure capabilities and ability to handle viscous fluids and slurries effectively. They are also suitable for applications where a constant flow rate is required, as they operate on a positive displacement principle. However, reciprocating pumps can be more complex and costly to maintain compared to centrifugal pumps.
API 675 vs 674
API 675 and API 674 are standards set by the American Petroleum Institute (API) for reciprocating pumps used in the oil and gas industry. API 675 specifically focuses on metering and process pumps, while API 674 covers reciprocating pumps for general service applications. These standards ensure that reciprocating pumps meet specific design and performance criteria for safe and reliable operation in demanding environments.
Reciprocating Pump Calculation
It is a positive displacement type pump where a certain volume of liquid is entered in closed volume and discharged using pressure to the
Request PDF | Flow in the Low Specific Speed Centrifugal Pump with Circular Casing | The internal flow of a centrifugal pump with semi-open impeller, whose type-number .
centrifugal pump and reciprocating pump difference|positive displacement pumps diagram