METHOD FOR ULTRASONIC CLEANING OF HEAT GENERATING AGGREGATES BY REMOVING DEPOSITS AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 2006 - IPC B08B3/12 F28G7/00 

FIELD: ultrasonic instrument making, namely prevention of deposit formation on inner and outer surfaces of heat generating aggregates in heat power engineering and other branches, intensifying of manufacturing processes.

SUBSTANCE: method is realized with use of magnetostriction converters in exciting windings of which bursts of power current pulses are generated by means of pairs of switching units while providing detection of emergency mode and forming signal inhibiting feed of control signal to control inlets of switching units. Magnetization current is supplied from DC magnetization source to exciting windings before generation and after termination of burst of power current pulses. Apparatus for performing the method includes magnetostriction converters having in each exciting winding switching capacitor; control circuit in the form of setting generator; supply-line filter; full-wave rectifier connected with outlets of filter; accumulation capacitor whose positive terminal is connected with plus terminal of rectifier and whose negative terminal is connected with minus terminal of rectifier; detector of short circuiting current whose one terminal is connected with minus terminal of accumulation capacitor and whose other terminal is connected with pickup for measuring electric current of power current pulses; power switching transistors. Each magnetostriction converter includes one exciting winding connected between pairs of power switching transistors through insulation capacitor; pickup for measuring current of power current pulses having fixed resistor and variable resistor and connected at one side with common bus and at other side with common sources of power switching units; connected with inlet of control circuit mean outlet terminal of variable resistor of said pickup; DC magnetization source whose outlets through chokes are connected with exciting windings of magnetostriction converters and whose inlets are connected with outlets of accumulation capacitor.

EFFECT: enhanced effectiveness of using magnetostriction converter, lowered energy consumption, increased intensity of ultrasonic oscillation in aggregate, improved efficiency of cleaning it.

4 cl, 5 dwg