关键词: 换热器, 组合转子, 稳定性, 强化传热, 阻垢

Abstract: This paper presented stability analysis on assembled rotors anti-fouling and heat transfer enhancement device used in heat exchangers in a chemical plant. The stability analysis of rotors blade and rotor axial length provided the parameter changes for the device. After 17 months’ running，the results showed that the diameter of the rotor was reduced by 1.1 mm，about11.6% of the rotor diameter. Assuming steady wear each year，the assembled rotors will be in effective use for more than five years. The rotor axial length was reduced by 0.315mm，about 0.9% of the rotor axial length. Under certain conditions，the axial wear can be ignored. A small amount of fouling appeared on the rotors surface，without affecting the device stability. Heat exchangers had no new leak tube after using the rotor-assembled strands，showing no serious damage. Water side support components tipped over due to incorrect installation. The authors suggested solutions to the improper accessory installation.

Key words: heat exchanger, rotor, stability, heat transfer enhancement, anti-fouling