SYSTEM FOR REDUCING WEAR AND INCREASING LONGEVITY OF AN ELECTRIC SUBMERGIBLE PUMPING SYSTEM

摘要

An electric submergible pumping system having a submergible electric motor 14 with a unique rotor bearing system 66 to promote longevity of the motor 14. The system includes an electric motor 14 having a housing 40 and a stator 46 mounted within the housing 14. A shaft 58 is rotatably mounted within the housing 40 for rotation within an interior, axial passage through the stator 46. A rotor bearing assembly 66 is disposed intermediate the stator 46 and the shaft 58. The assembly 66 includes a bearing sleeve 74 mounted adjacent the shaft 58, and a main body portion 90 disposed in sliding engagement with the bearing sleeve 74. A spring mechanism 116, such as a wave spring, is engaged with th e main body portion 90. A bracelet 118 is located between the spring mechanism 116 and an interior surface of the stator 46. The spring mechanism 116 biase s the bracelet 118 against the stator 46 to prevent the body portion 90 from rotating during rotation of the shaft 56.