A stator of a rotary vane-type pump

Abstract

The present disclosure relates to hydraulic machinery engineering, more specifically to stators of rotary vane-type pumps intended for pumping-over viscous, plastic masses and other fluids and multiphase mixtures lacking unctuous properties, but rich in mechanical impurities and / or having high viscosity, particularly such as stratum fluids of oil deposits, and may be applied in food-processing, chemical, petrochemical and other branches of industry.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a national phase application under 35 U.S.C. §371 that claims priority to PCT Application No. PCT / RU2015 / 000568 filed on Sep. 8, 2015, the entire contents of which are incorporated herein by reference.FIELD OF THE DISCLOSURE[0002]The present disclosure relates to hydraulic machinery engineering, more specifically to stators of rotary vane-type pumps intended for pumping-over viscous, plastic masses and other fluids and multiphase mixtures lacking unctuous properties, but rich in mechanical impurities and / or having high viscosity, particularly such as stratum fluids of oil deposits, and may be applied in food-processing, chemical, petrochemical and other branches of industry.BACKGROUND AND PRIOR ART[0003]In the prior art there are known various solutions of stators of rotary vane-type pumps. In particular there is known a stator of a rotary vane-type crude-oil pump described in patent RU 2191926 published Oct. 27, 2002,...

AI Technical Summary

Benefits of technology

The present disclosure provides a design for a stator that can efficiently pump high-viscosity fluids, fluids with high content of abrasion particles, and gas. The design improves the reliability and lifespan of the stator while also enhancing the functional capabilities of the pump. Overall, the technical effect of this patent is to provide a stator design that can handle a wide range of fluid properties while maintaining high efficiency and durability.

Problems solved by technology

A disadvantage of this solution is impossibility of pumping-over media with high content of mechanical particles, as a mere usage of specific materials for friction members does not exclude their abrasion wear when mechanical particles having higher hardness enter the gaps between rubbing parts, which leads to short life of the pump in these media.

This design, comprising appropriate cutouts in the stator, allows pumping-over high-viscosity fluids with high gas content, but it does not allow pumping-over fluids with mechanical impurities.

When small abrasive particles along with high-viscosity fluid enter and pass between rubbing parts (vanes and stator, between rotor and disks, vanes and disks) abrasive wear of the pump is unavoidable, and as a result—reduction of pump service life.

However, presence of apertures comparable with size of discharge chamber will lead to increased wear of vanes at locations of their permanent contact with stator, which results in non-uniform wear of work surface of the vanes and inevitable destruction of the stator and vanes at points of contact at flanks of the apertures, which leads to reduction of efficiency and pump failure.

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