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发明公开
CN102587827A 井下马达或泵部件及其制造方法以及具有该部件的井下马达 无效 - 撤回

井下马达或泵部件及其制造方法以及具有该部件的井下马达
摘要：
本发明提供一种井下马达或泵部件及其制造方法以及具有该部件的井下马达，其中螺杆泵或马达包括具有纵向孔的定子和可转动地设置在定子的纵向孔内的转子。转子包括转子芯和结合到转子芯的外表面上的由弹性材料形成的弹性外层。在转子在定子的纵向孔内转动时，弹性外层可密封地连接转子的外表面和定子上的螺旋构型。
摘要（英）：

The present invention provides downhole motor or pump components, a method of fabrication the same, and downhole motors incorporating the same, wherein a progressive cavity pump or motor includes a stator having a longitudinal bore and a rotor rotatably disposed within the longitudinal bore of the stator. The rotor includes a rotor core and a resilient outer layer formed of a resilient material bonded onto the outer surface of the rotor core. The resilient outer layer sealably connects the helical configurations on the outer surfaces of the rotor and the stator as the rotor rotates within the longitudinal bore of the stator.

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