ROTOR FOR A HELICAL HYDRAULIC UNIT

WIPO Patent Application WO/2004/081347

A1

The invention relates to gerotor hydraulic units for petrol and gas wells and can be used for general-purpose hydraulic motors. The inventive rotor consists of a blank rotor (1) provided with external helical teeth (2) which have convex tops (3) and concave spaces (4), and an anticorrosion wear-resistant coating (5) applied thereto. Said coating (5) for the external helical teeth is embodied in a multilayer form and consists of encompassed (6) and encompassing (7) layers. The external profile of each layer on the cross-section of the rotor is determined according to determinate relations. Said invention makes it possible to increase the service life and reliability, extend possibilities of applying coatings provided with different properties taking into consideration operational conditions and liquid media characteristics, and to carry out the repairing works by recoating.

ANDOSKIN VLADIMIR NIKOLAEVICH (RU)
ASTAFIEV SERGEI PETROVICH (RU)
PUSHKAREV MAKSIM ANATOLIEVICH (RU)
GLINKIN ALEKSEI SERGEEVICH (RU)
FADEEV MIKHAIL VALERIEVICH (RU)

PCT/RU2004/000029

September 23, 2004

February 03, 2004

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OBSCHESTVO S OGRANICHENNOI OTV (RU)
ANDOSKIN VLADIMIR NIKOLAEVICH (RU)
ASTAFIEV SERGEI PETROVICH (RU)
PUSHKAREV MAKSIM ANATOLIEVICH (RU)
GLINKIN ALEKSEI SERGEEVICH (RU)
FADEEV MIKHAIL VALERIEVICH (RU)

F01C1/107; F04C2/107; F04C13/00; (IPC1-7): F01C1/107

RU2169820C1	2001-06-27
RU2183543C1	2002-06-20
DE3637268A1	1987-05-07
EP0381413A2	1990-08-08
US3612734A	1971-10-12

Obschestvo, Ogranichennoi Otvetstvennostyu Firma Radius-servis S. (Perm, 2, RU)

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