換熱器用單金屬翅片管必須符合以下特點才合格

翅片管的工作原理及在換熱器上的應用.近幾年來，隨著新技術、新工藝的廣泛應用，一種新型加熱管材——翅片管越來越多的出現在瀝青加熱設備，翅片管的應用不僅可以大大提高加熱效率，而且可以降底加熱設備投資成本。換熱器用單金屬翅片管作為換熱元件，長期處在高溫潮濕的惡劣环境下，不得不使其有耐高溫、耐腐蝕等特點。換熱器用單金屬翅片管必須符合以下特點才合格：In recent years, with the wide application of new technology and new technology, a new type of heating pipe, finned tube, is more and more used in asphalt heating equipment. The application of finned tube can not only greatly improve heating efficiency, but also reduce the investment cost of heating equipment. Single metal finned tube is used as heat exchange element in heat exchanger. It has been in the harsh environment of high temperature and humidity for a long time, so it has the characteristics of high temperature resistance and corrosion resistance. The single metal finned tube of heat exchanger must meet the following characteristics: 1) 防腐性能1) corrosion resistance2) 耐磨性能2) wear resistance3) 低的接觸熱阻3) low contact thermal resistance4) 高的穩定性4) high stability5) 防積灰能力5) ability to prevent ash deposition.換熱器用單金屬翅片管通常在轉換熱功率的設備，增大熱量的面積，在我們生活中很多的設備都有使用到，是采用高智能的形象設計來實現出對於生活中环境更好的保護。Single metal finned tubes used in heat exchangers are usually used in equipment that converts heat power to increase the area of heat. Many devices in our life are used. It is to use high intelligent image design to achieve better protection of the living environment.換熱器用單金屬翅片管在使用中擁有著較高的防腐蝕的性能;很多時候，我們在對於一件物品正常的使用過程中，換熱器用單金屬翅片管的使用都是呈現出特有的环境優勢，增添瞭很多的附加功能，也在原本的設施基礎上提高瞭使用的功能，更好的便利瞭我們生活中的使用方式。耐磨性質也是實現換熱器用單金屬翅片管最顯著的特色，在將一些零件進行組裝的時候，換熱器用單金屬翅片管耐磨的性質總是會幫助設備有著耐久的使用，一些必要的裝置在使用中沒有一定揮發性，換熱器用單金屬翅片管提升設備的真實識別能力，也較好的體現出瞭在對於环境的保護下還擁有著更多的實用優勢。Single metal finned tubes for heat exchangers have a high anti-corrosion performance in use; many times, in the normal use of an item, the use of single metal finned tubes for heat exchangers presents unique environmental advantages, adding many additional functions, and improving on the basis of the original facilities. The use of the function has better facilitated the way of using in our daily life. Wear resistance is also the most prominent feature of single metal finned tubes used in heat exchangers. When assembling some parts, wear resistance of single metal finned tubes used in heat exchangers will always help equipment to have a durable use. Some necessary devices are not volatile in use. Heat exchangers are lifted by single metal finned tubes. The real recognition ability of the lifting equipment also better reflects that it has more practical advantages under the protection of the environment.1、翅片管的優點及材料翅片管由於在管外表面上設翅片而得名。它傳熱面積比光管可增大2~10倍，傳熱系數比光管可 提高1~2倍。由於傳熱能力的增強和單位面積的傳熱面加大，故與光管比完成同一熱負荷可用較少管 數，使設備結構緊湊並使金屬消耗量減少。因為翅片的材料可與基管不同，使材料的選擇與利用就更加合理。翅片材料根據使用环境和制造 工藝來確定，有碳鋼、不銹鋼、鋁及鋁合金、鋼及鋼合金等。另外，采用翅片管使介質與壁面的平均溫差降低，減少結垢，並且在翅片的漲縮作用下，已形成 的硬垢會自行脫落。1. The advantages of finned tube and its finned tubes are named after fins on the outer surface of the tube. Its heat transfer area can be increased by 2~10 times than that of the light tube, and the heat transfer coefficient can be increased by 1~2 times than that of the light tube. Because of the enhancement of heat transfer capacity and the enlargement of heat transfer surface per unit area, fewer tubes can be used for the same heat load as the optical tube, which makes the equipment compact and reduces metal consumption. Because the material of the fin can be different from the base tube, the choice and utilization of the material are more reasonable. Fin materials are determined according to the use environment and manufacturing process, including carbon steel, stainless steel, aluminium and aluminium alloy, steel and steel alloy, etc. In addition, the average temperature difference between the medium and the wall is reduced by using finned tubes, and the scaling is reduced. Under the action of the expansion and contraction of the fins, the hard scales formed will fall off by themselves.2、幾種常見翅片管的性能評定比較幾種翅片管的傳熱性能，繞片式最差，主要是接觸熱阻的存在，特別是在運行時，繞片式的 翅片張力隨溫度的增加而迅速下降，使接觸熱阻也迅速增加。焊接式傳熱性能最好。套片式性能次之， 因為翅片緊套於管表面上後再加以表面熱鍍鋅。雙金屬軋片傳熱性能類似於鑲片式，因為它是在套裝 後再軋出翅片。2. The performance evaluation of several common finned tubes compares the heat transfer performance of several finned tubes. The worst performance of winding finned tubes is the e彩色沥清地坪xistence of contact thermal resistance. Especially in operation, the fin tension of winding finned tubes decreases rapidly with the increase of temperature, which makes the contact thermal resistance increase rapidly. The heat transfer performance of welding is the best. The performance of the sleeve is second, because the fins are tightly sleeved on the surface of the tube and then are hot-dip galvanized. The heat transfer performance of the bimetal strip is similar to that of the insert, because it is rolled out of the fins after it is fitted.3、翅片管的分類翅片按其在管子上排列方式，可分縱向和橫向(徑向)兩大類。其他類型都是這兩類的變形，例 如大螺旋角翅片管(接近縱向)，而螺紋管(接近橫向)等。可根據流體的流動方向及換熱特點來選 擇。翅片管因制造方法不同而使其在傳熱性能、機械性能等方面有一定的差異。按制造方法分為整體 翅片、焊接翅片和機械連接翅片等。整體翅片由鑄造、機械加工或軋制而成，翅片與管子一體，無接 觸熱阻，強度高。但要求翅片與管子用同樣材料。焊接翅片用釬焊或氬弧焊等工藝制造，可使用與管 子不一樣的 材料。由於它的制造簡易、經濟且具有較好的傳熱和機械性能，故廣為應用。它的主要問 題是焊接工藝質量。機械連接翅片管有繞片式、鑲片式及雙金屬軋片式等。3. The classified fins of finned tubes can be divided into longitudinal and transverse (radial) fins透水地坪 according to their arrangement on the tubes. Other types are of these two types of deformation, such as large spiral angle finned tube (close to longitudinal), and threaded tube (close to transverse), etc. It can be selected according to the flow direction and heat transfer characteristics of the fluid. Because of different manufacturing methods, finned tubes have certain differences in heat transfer performance and mechanical properties. It is divided into integral fins, welding fins and mechanical connecting fins according to manufacturing methods. The integral fin is made by casting, mechanical processing or rolling. The fin and the tube are integrated. It has no contact thermal resistance and high strength. However, the same material is required for fins and pipes. Welding fins are produced by brazing or argon arc welding. Materials that are different from pipes can be used. Because its manufacturing is simple, economical and has good heat transfer and mechanical properties, it is widely applied. The main problem is the quality of welding process. The mechanical connection finned tube has winding type, insert type and bimetal rolled sheet type.換熱器用單金屬翅片管擁有著一定的防止積灰的能力，在對待較多的觀念中，換熱器用單金屬翅片管的使用都是一種心情的融合，有效的承載瞭很多在使用中的不同技能展示，也是一種有效的使用方式。Single metal finned tubes for heat exchangers have certain ability to prevent ash accumulation. In many concepts, the use of single metal finned tubes for heat exchangers is a kind of mood fusion. It effectively carries a lot of different skills in use, and is also an effective way of use.