Flow-Induced Vibration in Heat Exchangers
Flow-Induced Vibration in Heat Exchangers
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DOI：
10.1205/026387602753581971
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发表时间：
2002-04
影响因子：
3.9
通讯作者：
H. Goyder
中科院分区：
文献类型：
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作者：
H. Goyder
热交换器管束可能因过度振动或噪音而失效。主要失效机制是由管子周围和管子之间流过的壳程流体产生的。该流体可以是液体、气体或多相混合物。最严重的振动机制是流体弹性不稳定，仅运行几个小时后就可能导致管道损坏。显然，必须始终避免这种极端的振动原因。相反，由于流动湍流引起的抖振引起的振动非常小。然而，经过多年的使用后，这种无情的低水平振动会因微动而导致管壁变薄，这在高完整性热交换器中可能是不可接受的。因此，生命周期和完整性问题必须经常包含在热交换器规范中。本文回顾了引起振动和噪声的各种机制。特别关注实现良好管支撑布置的方法，以最大限度地减少振动损坏。参考了最新的数据来源，并讨论了标准和高完整性热交换器的设计和操作的良好工作实践。
Heat exchanger tube bundles may fail due to excessive vibration or noise. The main failure mechanisms are generated by the shellside fluid that passes around and between the tubes. This fluid may be a liquid, gas or multi-phase mixture. The most severe vibration mechanism is a fluidelastic instability, which may cause tube damage after only a few hours of operation. Clearly, such extreme causes of vibration must always be avoided. In contrast buffeting due to flow-turbulence causes very little vibration. However, after many years of service such remorseless low level vibration will produce tube wall thinning, due to fretting, which may be unacceptable in a high-integrity heat exchanger. Consequently, the issues of life cycle and integrity must frequently be included in heat exchanger specification. This paper reviews the various mechanisms that cause vibration and noise. Particular attention is given to methods for achieving good tube support arrangements that minimize vibration damage. References to the most recent sources of data are given and good working practice for the design and operation of standard and high-integrity heat exchangers is discussed.