Marine pump
A Marine pump is a pump which is used on board a vessel or an offshore platform.
Upper category
It is a kind of general equipment, usually driven by an electrical motor, refer to pump category.It is widely used as a machine in marine industry, refer to marine industry category.
General
A pump is a device that moves fluids, or sometimes slurries, by mechanical action. A marine pump is an important auxiliary equipment in marine industry and ship building industry. It is widely used in all kinds of marine vessels, such as barges, tug boats, containers, carriers, ships, vessels, fixed offshore structure, drilling jack-up rigs and so on.These marine pumps can be serviced for cooling, circulating, ballast, general service, fire-fighting, boiler feed water, condensate water, fresh water, sanitary water, bilge & sludge, F.O. transfer, L.O. transfer, F.O. and F.S. cargo pumping, cargo stripping, hydrophone tank unit, sewage treatment unit, oil water separator, incinerator, fresh water generator, and so on.
Type
Marine pump is named by its usage or application, it covers a lot of types of pumps, such as:The marine centrifugal pump is used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber, from where it exits.
The gear pump is a marine gear pump that uses the meshing of gears to pump fluid by displacement. It is one of the most common types of pumps for hydraulic fluid power applications. Gear pumps are also widely used in chemical installations to pump high viscosity fluids. There are two main variations; external gear pumps which use two external spur gears, and internal gear pumps which use an external and an internal spur gears. Gear pumps are positive displacement, meaning they pump a constant amount of fluid for each revolution. Some gear pumps are designed to function as either a motor or a pump.
The screw pump is a positive-displacement pump that uses one or several screws to move fluids or solids along the screw axis. In its simplest form, a single screw rotates in a cylindrical cavity, thereby moving the material along the screw's spindle.