Ultrasonic cleaning with floating transducers

Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...

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134 22R, 134169R, 134186, B08B 312

Patent

active

040713768

ABSTRACT:
A method of cleaning a surface by means of ultrasonic waves propagated through a liquid medium, having particular utility in the decontamination of the external or internal surfaces of nuclear fuel casks. For external surface cleaning, a hollow cylinder, open at both ends, is placed over the cask and sealed to the base plate. A buoyant ring, to which ultrasonic transducers are attached, is placed within the cylinder, encircling the cask. The cylinder is then filled with a cleaning solution and the ring floats from the bottom to the top of the cask as power is supplied to the transducers to produce cavitation of the solution. The cylinder is then drained and the ultrasonic cleaning is preferably continued as the ring is lowered with the level of the solution.

REFERENCES:
patent: 2437456 (1948-03-01), Bodine, Jr.
patent: 2644472 (1953-07-01), Ward
patent: 3021120 (1962-02-01), Van Der Burgt

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