The heat exchanger sometimes vibrates during the normal operation. Sometimes there is only one vibration source. Sometimes there are several vibration sources. Some vibration sources are relatively easy to predict and prevent, and some vibration sources are relatively easy to predict and prevent. The vibration caused is hard to estimate. Today, Shaanxi Ruite gives you an analysis of the causes of vibrations in the heat exchanger during operation.
It has been found through research that the vibration inside the heat exchanger is mainly caused by the flow of the shell side fluid, and the vibration caused by the fluid flow on the tube side is relatively small. When this vibration is serious, the tube will leak and destroy, resulting in a lot of noise. The pressure drop on the shell side is increased. For a period of time, as heat exchangers increase in capacity, the number of cases causing vibration and damage is gradually increasing, which has attracted the attention of the industry.
The damage caused by vibration has the following conditions: 1. The heat transfer tube parts collide with each other due to vibration, causing surface wear and obvious appearance wear; the heat transfer tube adjacent to the baffle plate is subject to collision and wear; the life of heat transfer tube during vibration Reduced; small cracks on the pipe fittings eventually cause damage to the pipe.
Made of fluoroplastic material, the fluoroplastic surface is smooth and the friction coefficient is small. Although it has vibration, it is not easy to wear. The fluoroplastic is almost chemically inert to all strong acids and alkalis, so it is not easy to corrode. Because the surface of the fluoroplastic tube bundle is smooth, it is smooth. Not easy to scale and build up. Compared with the metal material, fluoroplastics have better performance and longer life.
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Label: Analysis of the causes of vibration in heat exchangers
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