Cavitation nozzle plate adapter for rock bits

Details Cavitation nozzle plate adapter for rock bits Cavitation nozzle plate adapter for rock bits

1981-08-31

1983-04-05

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175 67, E21B 1018

Patent

active

043788530

ABSTRACT:
A flow cavitation insert device is adapted to be positioned adjacent a conventional nozzle, the nozzle then is converted to a cavitation nozzle for a rock bit. The cavitation device is designed to operate with hydraulic drilling mud and comprises a circular adapter plate with a concentric orifice formed thereby. A cavitation-inducing, flow restrictor crossbar radially intersects the center of the orifice formed by the plate. The crossbar is secured to the circular disc where the opposite ends of the flow restrictor come in contact with an axially aligned wall forming the inside diameter of the orifice.

REFERENCES:
patent: 2855182 (1958-10-01), Payne
patent: 4185706 (1980-01-01), Baker et al.
patent: 4187921 (1980-02-01), Garner
patent: 4193635 (1980-03-01), Thiruvengadam
patent: 4262757 (1981-04-01), Johnson, Jr. et al.
patent: 4342425 (1982-08-01), Vickers

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