FIELD: gerotor mechanisms of screw downhole motors for oil and gas well drilling, screw-type pumps for oil production from wells and general-duty screw hydraulic motors and pumps.
SUBSTANCE: stator comprises hollow body with inner surface formed as helicoid with inner helical multiturn teeth, elastomeric, for instance rubber, liner shaped as helicoid and provided with inner helical multiturn teeth and two connection modules arranged at body edges. Each connection module is integrally formed with the body and made as body end parts. Elastometic insert has valleys and extensions defined by inner helical multiturn teeth and having thicknesses related by predetermined correlation.
EFFECT: increased power characteristics, life time and reliability.
4 cl, 3 dwg
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