What types of marine pumps are commonly used on ships?

Jul 03, 2023

There are several types of marine pumps commonly used on ships for various purposes. Some of the most common types include:

 

  1. Centrifugal Pumps: These pumps are widely used on ships due to their ability to handle large volumes of fluid. They work on the principle of centrifugal force, where a rotating impeller accelerates the fluid and transfers it to the discharge outlet.
  2. Positive Displacement Pumps: These pumps are used when precise and consistent flow rates are required. They operate by trapping a fixed amount of fluid and then forcing it out through a discharge port. Common types of positive displacement pumps include reciprocating pumps and rotary pumps.
  3. Gear Pumps: Gear pumps are commonly used for transferring fuel, lubricating oil, and other viscous fluids on ships. They consist of two intermeshing gears that create chambers to trap and transport the fluid from the inlet to the outlet.
  4.  Screw Pumps: Screw pumps are known for their ability to handle high viscosity fluids, making them suitable for transferring heavy fuel oil and lubricating oils. They use one or more rotating screws to move the fluid through the pump.
  5. Diaphragm Pumps: These pumps are often used for pumping corrosive or hazardous liquids on ships. They utilize a flexible diaphragm to create a reciprocating action that moves the fluid through the pump.
  6. Submersible Pumps: Submersible pumps are designed to be fully submerged in water or other fluids. They are commonly used in bilge systems, ballast systems, and for various other applications where pumping is required in submerged conditions.
  7. Jet Pumps: Jet pumps, also known as ejector pumps, are used for pumping water, especially in marine applications. They work by using a high-pressure fluid stream (usually seawater) to create a vacuum, which then draws in and transports the fluid being pumped.

 

These are just a few examples of the types of marine pumps commonly used on ships. The specific pump selection depends on the intended application, fluid properties, flow rates, pressure requirements, and other factors related to the ship's operation