Patent ID: 7217107
Filing Date: 2007-05-15
Classification: E21B,F04D,H02K

Abstract:
1. A motor protector for a submersible pumping system, the submersible pumping system including a pump, a motor, and a shaft connecting the pump and motor, the motor protector comprising: a housing arranged between the pump and the motor through which the shaft passes; a bellows assembly arranged within the housing and having an accordion-like enclosure forming a movable fluid separation interface configured for isolating an internal fluid of the submersible pumping system, the enclosure defining an axial bore therethrough for passage of the shaft; and an attachment structure for connecting at least one end of the bellows assembly to the submersible pumping system, the accordion-like enclosure comprising: a first accordion-like enclosure having a predetermined outer diameter and an axial bore therethrough for passage of the shaft; and a second accordion-like enclosure having a predetermined outer diameter and an axial bore therethrough for passage of the shaft, wherein the diameter of the first accordion-like enclosure is greater than the diameter of the second accordion-like enclosure.