Ultrasonic Descaling Technology Of Ultrasonic Sonochemical Equipment

Ultrasonic descaling is a process of mechanical vibration propagating in the medium, and the ultrasonic frequency is high. Ultrasonic sonochemical equipment is mainly composed of ultrasonic generators, sound transmission systems and transducers in heat exchanger pipes. Ultrasonic anti-scaling mainly uses the ultrasonic power sound field to treat the fluid, so that the physical and chemical indicators and forms of the scale substances in the fluid will change under the action of ultrasonic waves, so that the scale will be dispersed, loose, broken, destroyed, and fall off, and will not easily adhere to the pipe wall. In this way, the effect of anti-scaling and descaling of the heat exchanger is achieved, and the heat transfer efficiency is improved and improved.

Compared with the traditional method, the main advantage of ultrasonic descaling method is that it does not need to use any chemicals, that is to say, it does not need to add any substances to the water. The principle of the ultrasonic descaling method is to use ultrasonic vibrations to vibrate the metal structure of the cooked exchanger and the water in it. Under the action of these vibrations, the hardness salt in the water begins to crystallize and will not adhere to the metal structure vibrating at the same ultrasonic frequency. on the pipe wall. On the one hand, the vibration of the pipe wall prevents the salt that has not yet fully crystallized in the water from depositing on the pipe wall; on the other hand, it helps to shatter the newly formed brittle water layer below 0.2mm. The mechanism of vibrating the scale layer is as follows:

Under the action of the lateral vibration generated by the pipe, the scale layer deposited on the water pipe also began to vibrate. The result of multiple lateral vibrations. Tiny cracks appear in the limescale. Under the action of ultrasonic vibration, water penetrates into the scale layer, because in the capillary, the resistance to liquid movement is greatly reduced. As the water enters the hot tube wall, it expands and even boils, creating bubbles that push against the edges of the crack and pull the scale away from the tube wall. Then, on the surface that has been cleaned, a new scale layer begins to form again. When the scale layer reaches the aforementioned thickness, the ultrasonic wave will vibrate it again, so as to achieve a certain dynamic balance. During this process, the heat transfer efficiency of the tube wall has not decreased. Because the scale fragments that are shaken off and carried away by the water flow take away the heat energy it obtains from the pipe wall, and transfer heat energy to the water during the flow away process. The role of ultrasonic waves is not only to prevent scale formation and maintain the output parameters of thermal power devices, but also to improve output parameters. This is because the vibration of the tube wall and water can generate fine water flow, and the vibration of the tube wall can reduce the liquid resistance and increase the flow rate of the water flow, thereby increasing the heat transfer effect on the tube surface. Usually, in the case of using ultrasonic waves, the boiler contains oxygen in the air, which is stored in the tiny gaps of the inner surface of the water pipe, and the ultrasonic vibration reduces the resistance of the liquid, so that the water flow can easily transport oxygen from these small gaps. Take away in the middle, so as to avoid the water pipe metal being corroded by oxygen.