1、焊接法
一般多选用焊接法。这样可保持不锈钢列管换热器高温高压时衔接的紧密性,一起焊接工艺较胀管工艺简便,管板孔加工要求低,且压力不太高时可运用较薄的管板,因而焊接法被选用。
2、胀接法
是用胀管器揉捏伸人管板孔中的管子端部,使换热器的管端发生塑性变形,不锈钢列管换热器管板孔一起产生弹性变形。当取出胀管器后,管板孔弹性缩短,管板和管子会紧紧揉捏在一起,完成密封紧固。
所以在给不锈钢列管换热器装置换热管的时分,一般都会选用以上这二者中的一种方法,但无论是哪种固定方法能起到很好的固定作用。不过小编还是主张大家在装置换热器换热管之前,根据设备自身的结构情况等条件来挑选适宜的一种固定方法进行装置,从而使固定效果比较好。
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