SСALE PREVENTING DEVICE
OF USD SERIES
The device is intended for destruction of available scale (carbonate deposits) and further prevention of its formation on surfaces of heat exchanging equipment of wide application with temperature of the shell in the place of the transducers installation up to 160 °C.
The device is widely applied in heat exchanging equipment: steam and hot-water boilers of drum type, other boilers, capacitors and so on. The devices are easily mounted on heat exchanging equipment and require no technical servicing.


OPERATION PRINCIPLE
The device operates on the basis of ultrasonic method preventing scale on heat exchange surface of equipment. When ultrasound influences the border of two mediums: cover and liquid, special physical and chemical reactions go on. From the metal surface cavitation bubbles are radiated. That cause formation of numerous crystallization centers making hardness salts to crystallize in water and not on the equipment surface. Ultrasonic fluctuations promote going of cavitation bubbles through pores and microcracks in scale to the shell of heat exchanging equipment and microexplosion of cavitation bubbles causes the scale exfoliation from the equipment shell.

Place of the transducers mounting is chosen most closely to heat-stressed points where the most intensive scale formation occurs. Influence over these points provides the optimum ultrasonic energy distribution throughout the heat-exchanging surface giving maximum efficiency.