Page 91 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

76 Major Process Equipment Maintenance and Repair

JUNCTION BOX-, .-.

PUMP SHAF

SERIES CASE BEA
STRAINER B
SUCTION STRAIN

OIL FILLED MOTOR

Figure 2-5. Submersible pump and motor. (Courtesy Byron Jackson Pump Division, Borg
Warner Industrial Products, Inc.)

Hollow Shaft Drivers

Hollow shaft drivers provide a means to adjust the axial position of the
pump rotor for distances of several inches. They were developed many
years ago to fill the need for large adjustments created by the demand for
deepwell pumps of ever increasing settings, and are now standard for al-
most all deepwell pumps. Hollow shaft drivers normally are designed to
carry downthrust only and special provisions must be made if upthrust
capability is required. The construction of a hollow shaft motor is shown
in Figure 2-7.