DEEP-WELL PUMP PLUNGER Russian patent published in 1995 - IPC

Abstract RU 2027908 C1

FIELD: oil-extraction industry. SUBSTANCE: tubular carrying spindle is sealed with spacer rings mounted on it for axial displacement. Opposing ends of rings are tapered to form annular grooves expanding towards outer surface. Grooves accommodate sealing rings of trapezoidal section with wider portion directed outward. Spindle is additionally sealed with set of spacer rings mounted on it for axial displacement and having bevelled facing ends forming spaces towards spindle receiving trapezoidal-shape sealing rings facing spindle with their wider portion. EFFECT: improved design. 2 cl, 1 dwg

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RU 2 027 908 C1

Authors

Zadumin S.S.

Vas'Kov A.S.

Kalininskij A.G.

Dates

1995-01-27—Published

1992-04-07—Filed