翅片管又称扩展表面管，可以有壳体也可以没有，翅片管是在原有的管子表面上，不论外表面还是内表面加工上了很多翅片，使原有的表面得到扩展，而形成一种独特的传热元件。翅片管在动力、化工、制冷等工业中有广泛的应用，主要应用于空气冷却器，能减轻工业缺水及工业用水的环境污染问题，传热强化方面使得低肋螺纹管及微细肋管等在蒸发、冷凝方面的相变换热得到广泛应用。由多支翅片管按一定规律排列起来而组成的换热单元叫翅片管束。一个翅片管换热器可以由一个或多个翅片管束组成，对翅片管束了解有助于翅片管换热器的应用。

Finned tube, also known as extended surface tube, can have shell or not. Finned tube is on the original surface of the tube, whether the outer surface or the inner surface is processed with many fins, so that the original surface is expanded, and a unique heat transfer element is formed. Finned tubes are widely used in power, chemical industry, refrigeration and other industries. They are mainly used in air coolers, which can reduce the water shortage and environmental pollution of industrial water. In terms of heat transfer enhancement, phase change heat transfer of low fin spiral tubes and micro fin tubes has been widely used in evaporation and condensation. The heat exchange unit composed of several finned tubes arranged according to certain rules is called finned tube bundle. A finned tube heat exchanger can be composed of one or more finned tube bundles. Understanding the finned tube bundle is helpful to the application of finned tube heat exchanger.

翅片管束的组成部分有哪些呢？

What are the components of finned tube bundle?

1.翅片管多支：传热的基本元件；

1. Multiple finned tubes: basic elements of heat transfer;

2.管箱集箱或管板：连接翅片管两端的箱体，弯管或钢板，当翅片管与箱体或管板连接以后，翅片管之间的间距也就固定了，同时管箱使管内的流体形成了连续的流道；

2. Tubesheet or header: the box, elbow or steel plate connecting the two ends of finned tube. When the finned tube is connected with the box or tube sheet, the spacing between the finned tubes is fixed, and the tube box makes the fluid in the tube form a continuous flow channel;

3.构架：使整个翅片管束得以支撑和固定。

3. Frame: support and fix the whole finned tube bundle.

管束是空冷器中主要部分，由翅片管、管箱和框架组成，是一个独立的结构整体，它的基本参数有管束型式通常指水平式、斜顶式等；工作压力和温度、翅片管型式和规格；管箱型式、管束长度和宽度、管排数、管程数等。

Tube bundle is the main part of air cooler, which is composed of finned tube, tube box and frame. It is an independent structural whole. Its basic parameters include tube bundle type, horizontal type and inclined top type; working pressure and temperature, type and specification of finned tube; tube box type, length and width of tube bundle, number of tube rows, number of tube passes, etc.

螺旋翅片管是一种具有螺旋形翅片的高效传热元件。它的传热面积为光管的几倍至几十倍，能强化传热，降低流动阻力，减少金属消耗量，从而提高了换热设备的经济性和运行可靠性。目前，螺旋翅片管已在各种锅炉中广泛使用。螺旋翅片管可采用多种方法制造，目前，用于锅炉、压力容器等换热设备上的翅片管主要有以下几种制造方法:高频电阻焊螺旋翅片管、钎焊螺旋翅片管和整体螺旋翅片管。详细介绍了螺旋翅片管的制造方法、性能评价指标、应用以及整体型螺旋翅片管的优势等。

Spiral finned tube is an efficient heat transfer element with spiral fins. Its heat transfer area is several to dozens times of that of smooth tube, which can strengthen heat transfer, reduce flow resistance and metal consumption, thus improving the economy and operation reliability of heat exchange equipment. At present, spiral finned tube has been widely used in various boilers. Spiral finned tube can be manufactured by various methods. At present, the fin tube used in heat exchange equipment such as boiler and pressure vessel mainly has the following manufacturing methods: high frequency resistance welding spiral finned tube, brazed spiral finned tube and integral spiral finned tube. The manufacturing method, performance evaluation index, application and advantages of integral spiral finned tube are introduced in detail.