高效、紧凑换热器是目前有发展前途的新型换热设备,综合吸纳了板式、板翅式及螺旋板换热器的优点,开发出一种新型蜂窝紧凑结构螺旋板换热器,详细介绍了该换热器的结构特点、好性及应用场合,便于好地推广应用。
Efficient and compact heat exchanger is one of the most promising new type of heat exchange equipment, comprehensive absorbed plate, the plate heat exchanger and the advantages of the spiral plate heat exchanger, developed a new type of compact cellular structure of the spiral plate heat exchanger, the structure characteristics of the heat exchanger is introduced, advantages and applications, to facilitate better popularization and application.

蜂窝紧凑结构螺旋板换热器,它是采用和板式换热器传热板相似的带有压槽(坑)的1mm薄金属板取代螺旋板换热器的螺旋板,用薄板上密布的凹坑取代稀疏的定位柱,构成蜂窝巢状内胆的新型蜂窝螺旋板换热器。

该换热器的结构综合了板式、板翅式和螺旋板式3种换热器的优点,摈弃其缺点,通过结构集成及优化而成。它是一种可用于高压介质、结构紧凑、金属消耗量低、传热高效、制造也不太复杂的高效紧凑换热器。

对板式、板翅式及螺旋板式等换热器的结构性能综合分析可知,从承受介质压力的能力看, 板式、板翅式换热器传热元件(板片)远远优于螺旋板换热器的内件(螺旋板) ;螺旋板换热器的筒状外壳又远远优于板式换热器的厚平板外壳;从内件的传热系数及单位传热面积金属消耗量来看,板式、板翅式换热器的内件远优于螺旋板换热器的内件;从2种换热器介质流程、温差及处理量等方面,螺旋板换热器总体结构又优于板式、板翅式换热器的总体结构。
such as performance, a comprehensive analysis from the medium pressure ability, plate, plate fin heat exchanger heat transfer components (plate) is much better than the screw plate heat exchanger in a spiral plate (); Tubular shell of spiral plate heat exchanger is much better than the plate heat exchanger of thick plate shell; From the internal parts of heat transfer coefficient of heat transfer and unit area of metal consumption, plate, plate fin heat exchanger in the internal parts of a far better than the screw plate heat exchanger; From 2 medium and processing process, the temperature difference of heat exchanger, spiral plate heat exchanger and overall structure is superior to the plate, the overall structure of the plate-fin heat exchanger.

在分析比较的基础上,提出了这种新型结构换热器———蜂窝紧凑螺旋板换热器。

换热器外部结构采用普通螺旋板式换热器的圆筒体结构,内部用作传热面的螺旋板改用与板式换热器传热板相似的具有压槽(坑)的薄不锈钢传热板卷制而成,构成一种宏观上看起来是螺旋板换热器,从传热面看却是蜂窝(巢)状紧凑结构,既像板式又像板翅式的紧凑式换热器该换热器的传热板在高压介质的作用下,通过密布的凹坑的凸出高度的支撑,相邻两板紧紧压在一起,凹坑起了定距柱的作用,但此“定距柱”并不需要焊接,冲压的数量也没有限制。众所周知,多支承平板承受均布载荷的介质压力的能力与撑点的间距的平方成反比,密布支撑点的薄板可以承受很高的介质压力。
External heat exchanger structure using common cylinder structure of the spiral plate heat exchanger, internal used for spiral plate heat transfer surface to similar to plate heat exchanger heat transfer plate has a pressure tank (pit) of thin stainless steel heat transfer plate coiling, constitute a macro seems to be on the spiral plate heat exchanger, look from the heat transfer surface is the cellular (nests) shape compact structure, both as compact like a plate heat exchanger and plate heat exchanger heat transfer of the heat exchanger plate under the action of high pressure medium, by gathering the bulging height of pit support, two adjacent plate tightly pressed together, pits have played a role in column spacing, but the "distance column" does not need welding, there is no limit to the number of stamping. As we all know, the more support plate under uniform load and the power of the medium pressure is inversely proportional to the square of the distance of supporting points, gathering point of sheet can be medium under high pressure.
多支撑点的凹坑将圆筒状的内、外压压力容器转化为以支撑点间距为尺寸的多腔体承压结构,像板翅式换热器的蜂巢中的一个个蜂窝,从而可以具有板翅式换热器的结构紧凑、传热效率高的优点。螺旋板换热器有足够厚度的圆柱形外壳,承受内压能力是很强的,将所有螺旋板包扎在一起,所以在支撑点处的凹坑与相邻板之间并不需要焊接,从而克服了板翅式换热器各板翅之间需要钎焊的缺点,大大减少了加工费用。在设备大型化方面也比板翅式换热器及板式换热器为有利。