依据工艺用处,板式换热器又有不同的叫法:板式加热器、板式冷却器、板式冷凝器、板式预热器;
板式换热器是由一组波纹金属板组成,板上有孔,供传热的两种液体经过。金属板片安装在一个旁边面有固定板和活动压紧板的框架内,并用夹紧螺栓夹紧。板片上装有密封垫片,将液体通道密封,而且引导流体交替地流至各自的通道内。液体的流量、物理性质、压力降和温度差决定了板片的数量尺度,液体的化学功能、腐蚀特性决定了板片及胶垫的材质,不同的波纹板结构设计不公提高了湍流程度,而且构成许多支撑点,足以承受介质间的压力差。
金属板和活动压紧板安装在悬挂梁上,并由下导杆定位,而杆端则固定在支撑柱上,但假如其间一种液体或两种液体在换热器内不止经过一次,则接口应开在因定板和活动压紧板上。
板片波纹角度巨细的合理调配,能够较大提高单位换热面积的换热效果、调节液体的阻力、节约换热面积,其成果下降出资成本,缩短出资回收时间。
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