· Hermetically Sealed Type
A Hermetically Sealed Type motor utilizes windings of standard construction and insulation
thickness. The windings are encased and Hermetically Sealed within the external shell
casing on the outside and an internal tube or liner inside the bore. The Hermetically
Sealed enclosure eliminates the possibility of water leakage into the winding. The liquid
medium circulates between the rotor and stator liner providing lubrication and cooling to
the bearings.
· Wet Winding Type
A Wet Winding Type motor is one in which the motor windings are in direct contact with a
liquid medium. The medium is clean, clear water. A pressure balancing system prevents
exchange of the motor liquid medium and well water due to thermal expansion and
contraction when the motor is operating. The liquid medium fills the inside of the motor
and surrounds both the stator windings and the rotor. A completely waterproof insulation
is used on the magnet wire used for the stator windings. The liquid medium inside the
motor air gap and coils acts as a heat transfer device by circulating through the windings
and transferring heat to the external casing. Dissipation of this heat occurs as the well
water flows at a required velocity over the external case. As is the case in all
submersible type motors, the internal liquid medium is also used for bearing lubrication.
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Features
· Discharge Pipe
Properly sized for optimum water velocities to insure peak
hydraulic performance.
· Discharge Bowl
Several discharge sizes available for NPT or flanged pipe.
· Discharge Bearing
Extra long top protected bronze bearing insures positive shaft
alignment and stabilization for extended life.
· Intermediate Bowl
Close grained Class 30 cast iron. Water passage glassed for
maximum efficiency and abrasion resistance.
· Impellers
Designed for maximum efficiency with wide range hydraulic
cover age. Precision balanced for smooth operation.
· Upthrust Collar
Designed for extra margin of safety against possible
momen-tary upthrust occurring at startup.
· Intermediate Bowl
Bearings
Reliable long life bronze or rubber bearing.
· Lock Collets
Accurately machined to insure positive locking of pump
impeller to shaft.
· Pump Shaft
100,00 PSI high tensile stainless steel provides strength and
excellent corrosion resistance. Ground and polished for smooth bearing surface.
· Suction Inlet
Contoured for smooth flow entrance. Protected by an over sized
stainless steel strainer to prevent entrance of damaging solids.
· Suction Adapter
Ductile iron provides for increased strength and positive
motor alignment. Open area permits easy access to pump/motor coupling.
· Pump/Motor Coupling
Large stainless steel coupling accurately machined for perfect
alignment, balance, and power transmission. |
Submersible Options:
Bell & Gossett can provide several options in pump and motor combinations to meet the
exacting conditions of your applications:
· High horsepower, limited well diameters.
· Motor sensing devices.
· Water level indicators.
· Special materials.
· Special voltage motors. |
