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螺旋折流板换热器是以很小的压降实现强化传热的新型换热设备,但已有的1/4椭圆螺旋折流板方案不适合用于占管壳式换热器绝大多数的正三角形排列布管方案。文中介绍一种新型螺旋折流板换热器,由每层3块三分椭圆折流板首尾相接而形成壳侧螺旋通道,每块折流板的边都位于管束的自然间隔中。由于每块折流板的基准边与椭圆之长轴重合或平行,并与正三角形排列布管的各管孔的一条中心连线平行;另一条边也与另一方向的管孔中心连线平行,因而其管孔的定位划线和制造容易实现。
The spiral baffle heat exchanger is a new type of heat exchange device that achieves enhanced heat transfer with a small pressure drop. However, the existing 1/4 elliptic spiral baffle scheme is not suitable for large-scale heat exchangers Most of the regular triangle arrangement tube plan. In this paper, a new type of spiral baffle heat exchanger is introduced, in which three arc-shaped elliptical baffles on each layer are connected end to end to form shell-side spiral channels, and the edges of each baffle are located in the natural space of the tube bundle. Because each baffle reference edge coincides with or parallel to the long axis of the ellipse and is arranged in parallel with a triangle pipe center hole parallel to each other; the other side is also connected to the center of the hole in the other direction Parallel, so the positioning of its pipe scribing and manufacturing easy to achieve.