关键词: 换热器, 流体诱导振动, 固有频率, 防振措施, 机理分析

Abstract: The flow-induced vibration of tube bundles in heat exchangers seriously affects the operation safety. This paper presents the research progress in the field of vibration mechanism of tube bundles in recent years. Due to vibration damage，the average service life of heat transfer tube is only half of its design life. Based on the systematic analysis，the corresponding anti-vibration measures are proposed. As the design trend of heat exchanger is to get large-scale and high-spead shell-side flow the flow-induced vibration of tube bundles stands out as one of the decisive factors to extend the service life of heat exchanger. This paper pointed out that the future research should be focused on the reason of flow-induced vibration of tube bundles，and the more effective protective measures should be proposed，which is of some significance to the actual design of heat exchanger.

Key words: heat exchanger, flow induced vibration, natural frequency, precautionary vibration measures, analysis of mechanism