换热器管板孔桥宽度计算GBT151

19264419.2519.30.09490.94995.805.754.054.02换热管外径换热管中心距Ⅰ级管束管孔直径Ⅱ级管束管孔直径d(mm)S(mm)dh(mm)dh(mm)141914.2514.3162216.2516.3192519.2519.3253225.2525.3303830.3530.4324032.432.45354435.435.45384838.4538.5455745.545.55506450.5550.6557055.6555.7577257.6557.7换热器管板孔桥宽度计算注：绿色框为输入数据，黄色框为计算结果。换热管外径d(mm)换热管中心距S(mm)管板厚度δ(mm)Ⅰ级管束管孔直径dh(mm)Ⅱ级管束管孔直径dh(mm)钻头偏移量△2(mm)孔桥偏差△1(mm)Ⅰ级管束允许孔桥宽度B(mm)Ⅱ级管束允许孔桥宽度B(mm)Ⅰ级管束最小孔桥宽度Bmin(mm)Ⅱ级管束最小孔桥宽度Bmin(mm)