Submarine ultrasonic cleaning machine

Abstract

A cleaning machine operated under water to clean radioactive particles on surfaces of nuclear wastes of middle-high activity to reduce activity, and to prevent radiation from leaking out when cleaning the nuclear wastes.

1 . A submarine ultrasonic cleaning machine, comprising: 
 (a) a cleaning tank filled with a cleaning medium, said cleaning tank having a sealing gate at a side, said cleaning tank having an inlet pipe;    b) a plurality of transducers deposed on an inner bottom surface and an inner side surface of said cleaning tank;    (c) more than one basket deposed correspondingly over said transducers on said inner bottom surface of said cleaning tank, said basket filled with nuclear wastes to be cleaned;    (d) a water-shielding box deposed upon said basket;    (e) at least a shielding cover covering on said water-shielding box; and    (f) a load-hanging truss deposed outside of said cleaning tank.    
   
   
       2 . The cleaning machine according to  claim 1 , wherein said cleaning tank comprises a plurality of hook parts.  
   
   
       3 . The cleaning machine according to  claim 1 , wherein said cleaning tank comprises two layers of inner wall having air between said two layers.  
   
   
       4 . The cleaning machine according to  claim 1 , wherein said cleaning tank is connected to an oil-free submerged pump at bottom of said cleaning tank.  
   
   
       5 . The cleaning machine according to  claim 1 , wherein said transducers on said bottom surface of said cleaning tank are inclined correspondingly to each other.  
   
   
       6 . The cleaning machine according to  claim 1 , wherein said transducer is an ultrasonic transducer comprising multiple bandwidths and a continuous sweep-ware.  
   
   
       7 . The cleaning machine according to  claim 1 , wherein a partitioning shelf is deposed between said transducer and said basket to prevent each other from touching and to maintain an energy efficiency for cleaning.  
   
   
       8 . The cleaning machine according to  claim 1 , wherein said water-shielding box comprises a plurality of hook parts at a rim of said water-shielding box.  
   
   
       9 . The cleaning machine according to  claim 1 , wherein said shielding cover is narrowed at a direction to be bell-shaped.  
   
   
       10 . The cleaning machine according to  claim 1 , wherein said shielding cover comprises an outside surface of stain less steel and is filled with lead inside said shielding cover.  
   
   
       11 . The cleaning machine according to  claim 1 , wherein said load-hanging truss comprises a plurality of square steels of 100×100×t6.  
   
   
       12 . The cleaning machine according to  claim 1 , 
 wherein said load-hanging truss comprises seismic loads of 0.3 g seismic load at horizontal direction (x-axle and y-axle) and 0.2 g seismic load at vertical direction (z-axle); and    wherein said seismic loads are analyzed by using a quasi static approach.