STATOR ELEMENT OF A PROGRESSIVE CAVITY PUMP AND PROGRESSIVE CAVITY PUMP

摘要

Stator element of a progressive cavity pump and progressive cavity pump;The invention relates to a stator element of a progressive cavity pump. The stator element comprises:a reinforcement tube (20) having a longitudinal axis (A-A), an inner face (22), and an outer face (24), andan elastomer liner fixed to the inner face of the reinforcement tube,characterized in that at least a portion of the reinforcement tube (20) has a substantially constant thickness (e) and in that said portion of the reinforcement tube (20) is deformed such that it comprises at least a first relief pattern (28) and a second relief pattern (30), the first relief pattern (28) having the shape of a helical strip that is right-handed relative to the longitudinal axis (A-A), the second relief pattern (30) having the shape of a helical strip that is left-handed relative to the longitudinal axis (A-A), the first and second relief patterns meeting in at least one section (32).