HYDRAULICALLY DRIVEN PUMPING UNIT (DESIGN VERSIONS) Russian patent published in 1998 - IPC

FIELD: chemical industry, oil industry; transfer of oil products, solutions of alkalis and acids and explosion hazard liquids. SUBSTANCE: in design version 1 hydropulsator is used in which continuous flow of high-pressure working medium is converted into pulsating flow and is distributed among pumping units in which repeated cycles of filling in and displacing of handled medium take place under action of working medium through diaphragms. Hydropulsator does not require special drive as rotation is provided by means of built-in hydraulic motor operating owing to insignificant part of energy of continuous flow of working medium. In design version 2 hydropulsator with two distributing sections of working medium flow is used which make it possible to compensate for load on rotor and bearings. Rotor is rotated by built-in hydraulic motor. EFFECT: provision of leakproofness at handling of medium, possibility of bringing pump drive out of dangerous zone of operation. 2 cl, 11 dwg