MODULAR CONSTRUCTION IMMERSION CENTRIFUGAL PUMP PLANT Russian patent published in 2003 - IPC

FIELD: applicable in production of plants for production of oil and water from wells having curved sections or an inclined surface contour. SUBSTANCE: the plant has successively connected modular sections. At least one of the joints between the sections is made in the form of a flexible joint containing an unloading and a bellows components. The bellows component is made in the form of a pipe, with ribs made on part of its length. The first end of the bellows component is fastened in the body of the first section of the plant for axial displacement. An end component consisting of a thrust and connecting sections is fastened on its second end. The connecting section is fastened on the second end. The connecting section is fastened on the second end of the bellows component for turning, and is rigidly connected to the second section. Part of the pipe surface of the bellows component and at least part of the end surface of the connecting section are made in the form of spherical bearing surfaces. The centers of the spheres are positioned on the longitudinal axis of the flexible joint near the middle of the bellows. The unloading component is made in the form of a pipe rigidly connected to the body of the first section. The end part of the unloading component is made with spherical bearing surfaces for transmission of axial forces from the bellows and end components to the body of the first section at an angular displacement of the second end of the bellows component. EFFECT: production of media from wells with a high curvature rate. 2 cl, 3 dwg