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

摘要： 针对组合转子强化传热及阻垢装置在某石化企业冷却器中运行稳定性进行了研究。通过对装置转子的叶片磨损量以及转子的轴向长度进行测量分析得出，转子经过17个月的运转，最大径向减少量为1.1mm，占转子外径11.6%，若认为每年的磨损量相同，那么组合转子有效使用年限远远超过5年。转子轴向长度方向最大磨损量为0.315mm，占总长度的0.9%，在一定的条件下，轴向磨损基本可忽略。装置运行后转子表面存在少量污垢，但其未对装置运行的稳定性造成影响。装置运行后换热器无新增漏管的报告，故装置未对换热管造成严重的损害。由于现场安装不够规范以及挂件未能与换热管固定在一起，有部分装置的出水端挂件脱出换热管并倾倒，封头的安装也对其产生了一定的影响。针对挂件倾倒问题本文给出了解决办法。

关键词: 换热器, 组合转子, 稳定性, 强化传热, 阻垢