METHOD OF CAVITATION OF A FLOW OF LIQUID AND DEVICE THEREFOR

WIPO Patent Application WO/2001/025642

A1

The invention relates to hydromechanics and in particular to the domain thereof related to gas and oil industry. The inventive method is a hydrodynamic process. For a given channel cross-section of a pressure line, the flow is accelerated so as to reach a speed at which Re > Re(cr), where Re is the Reynolds number and Re(cr) is the critical Reynolds number; the flow is then interrupted during a period less than half of the phase of the hydraulic shock, which makes it possible to obtain flow interruptions. The device for cavitation of a liquid flow is mounted in the channel of a pressure line and includes a cavitator who has the form of a working medium. Such working medium is located in the casing and can move radially inside the lime and, to a limited extent, along the axis of the line. The maximum cross-section surface of the working medium in a plane perpendicular to the axis of the line is higher than 0.8 of the passage of the line but is not equal thereto. When the hydrostatic pressure is high, the flow interruption is facilitated by injecting into the pumped liquid cavitation embryos representing gas bubbles, solid dispersions or an emulsion of a nonsoluble liquid; cavitation is generated thereby even at high hydrostatic pressures.

IVANNIKOV VLADIMIR IVANOVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)

PCT/RU2000/000392

April 12, 2001

October 02, 2000

Click for automatic bibliography generation  

IVANNIKOV VLADIMIR IVANOVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)

E21B7/18; E21B28/00; E21B37/08; F15D1/02; (IPC1-7): F15D1/02

US4262757A	1981-04-21
US4621931A	1986-11-11
SU653435A1	1979-03-25
US3807632A	1974-04-30
US3545552A	1970-12-08

Poroikov, Alexandr Jurievich (28/21-2-16 Moscow, 5, RU)

View/Download PDF      PDF Help

Previous Patent: CENTRIFUGAL PUMP IMPROVEMENTS

Next Patent: ANCHORING SCREW