3500 GPM Vertical Turbine Fire Pump Sea Water Application

Pump Performance Curve:

Vertical shaft turbine (commonly referred to as “vertical turbine”) pumps are unique in that the impellers

are intended to be submerged in the water source. They are used for installations where the water source

is below the pump impellers. These pumps have a bowl assembly which contains several impellers on a

vertical shaft –where the discharge of one impeller directly feeds the suction of the next impeller, and so

on – a column assembly built to a specified length, and a discharge head assembly which holds the motor

or right-angle gear drive. In a mechanical room, the discharge head assembly of a typical vertical turbine

pump is the only visible part of the pump.

The VTP pump line is normally designed to operate in wells or sumps. Its bowl assembly consists primarily

of a suction case or bell, one or more pump bowls and a discharge case. The pump bowl assembly is

positioned in the sump or well at a depth to provide the proper submergence.

How It Works:

The vertical turbine pump is normally driven by an AC electric induction motor or a diesel engine via a right

angle drive.The end of the pump consists of a rotating impeller that is joined to a shaft and guides the well

water into a diffuser casing known as a bowl.

Pumps with multi-stage arrangements use several impellers on a single shaft to generate higher pressure

that would be required for pumping water from deeper wells or where higher pressure (head) is required at

ground level.

A vertical turbine pump works when water comes through the pump from the bottom through a bell-shaped

device known as a suction bell. The water then moves into the first stage impeller, which increases the velocity

of the water. The water then moves into the diffuser casing directly above the impeller, where the high velocity

energy is transformed into high pressure. The diffuser casing also guides the fluid into the next impeller located

directly above the diffuser casing. The process goes on through all the stages in the pump.

After leaving the diffuser casing, the water passes in a vertical column pipe and rises toward the surface.

The rotating shaft within the column is propped at 3 to 5 foot intervals using sleeve bushings that are set

within the column and they are lubricated by the water as it moves past them. The pump also has a discharge

head at the surface which allows the flow to change direction toward the discharge pipe. An upright standing

high thrust A.C. motor is fitted above the pump’s discharge head.

Characteristics:

Be suitable to be used where a static suction lift is involved, can save pump room space.

Application:
Large hotels, hospitals , schools,office buildings,supermarkets, commercial residential buildings, metro stations,

railway stations, airports, kinds of transportation tunnels, petrochemical plants, thermal power plants, terminals,

oil depots, large warehouses and industrial and mining enterprises,offshore platform

Service: