管道开孔如何计算
作者:上海辉顺阀门 发布时间:2015-04-10 10:03
管道开孔补强计算表 （出自《压力管道应力分析》） 主管公称壁厚 13 厚度负偏差 0.125 S1 11.38 支管公称壁厚 7.5 厚度负偏差 0.125 S2 6.56 补强圈外径 300 焊缝焊脚高度 10 Sr（补强圈厚度）
管道开孔补强计算表
|
（出自《压力管道应力分析》） |
|
主管公称壁厚 |
13 |
厚度负偏差 |
0.125 |
S1 |
11.38 |
|
|
|
|
|
|
|
|
|
|
支管公称壁厚 |
7.5 |
厚度负偏差 |
0.125 |
S2 |
6.56 |
|
|
|
|
|
|
|
|
|
|
补强圈外径 |
300 |
焊缝焊脚高度 |
10 |
Sr（补强圈厚度） |
13 |
|
|
|
|
|
|
|
|
|
|
主管外径 |
426 |
|
|
d1 |
184.61 |
|
|
|
|
|
|
|
|
|
|
支管外径 |
168 |
设计压力（MPa） |
3.5 |
|
|
|
|
|
|
|
|
|
|
|
|
支管与主管夹角 |
60 |
设计温度（℃） |
370 |
|
|
|
|
|
|
|
|
|
|
|
|
c1主管钢管腐蚀裕量 |
2.5 |
设计温度下许用应力（MPa） |
90 |
|
|
|
|
|
|
|
|
|
|
|
|
c2支管钢管腐蚀裕量 |
2.5 |
焊接接头系数 |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
计算沿主管的有效补强区范围 |
|
|
|
|
|
|
|
|
|
|
d2 |
105.24 |
184.61 |
|
|
|
|
|
|
|
|
|
|
|
|
|
计算沿支管的有效补强区范围 |
|
|
|
|
|
|
|
|
|
|
L4 |
22.19 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L4 |
23.16 |
22.19 |
|
|
|
|
|
|
|
|
|
|
|
|
|
计算需要的补强面积A1 |
|
|
|
|
|
|
|
|
|
|
S01（主管理论壁厚） |
8.16 |
|
|
Y（温度影响系数） |
0.4 |
|
|
|
|
|
|
|
|
|
|
A1（受内压时） |
1707.48 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A1（受外压时） |
853.74 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
计算补强区内主管超厚部分形成的面积A2 |
|
|
|
|
|
|
|
|
|
|
A2 |
132.65 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
计算补强区内支管超厚部分形成的面积A3 |
|
|
|
|
|
|
|
|
|
|
S02（支管理论壁厚） |
3.22 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A3 |
43.34 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
计算补强区内焊缝金属及补强金属的总面积A4 |
|
|
|
|
|
|
|
|
|
|
A4 |
1578.13 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
补强条件的校核 |
|
|
|
|
|
|
|
|
|
|
A2+A3+A4 |
1754.13 |
A1 |
1707.48 |
合格 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
壁厚计算 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
必填项 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
