绝缘接头Insulated joint
一、绝缘接头概述：
绝缘接头是燃气输配和石油管线系统中不可缺少的重要管道附件，主要应用于燃气输配系统和燃气调压站，其作用是将燃气输配管线的各段间、燃气调压站与输配管线间相互绝缘隔离，保护其不受电化学腐蚀， 延长使用寿命，还可直接埋地使用。本公司的整体式绝缘接头是在同国外产品进行对比、分析、研究的基础上着重针对我国燃气输配管线中经常出现的泄漏问题进行设计的。
二、产品结构和工作原理：
整体式绝缘接头由下面各零件组成：上、下管、套筒、绝缘件、密封件、绝缘涂层。在绝缘接头的上、下管对接端面件，夹有绝缘件和密封件，形成具有绝缘性能的双密封结构。套筒采用坡口焊接或与上导管直接焊接两种形式，将绝缘件和上、下管牢固封裹在里面，形成“密封容器”，从而既保证了良好的绝缘效果，又大大提高了绝缘结构的承压能力。
|
|
|
|
|
|
五、绝缘接头参数表
PN25压力等级绝缘接头
|
型号Type |
规格 |
A |
B |
L |
钢管材质 |
|
DN25-25 |
DN25 |
34 |
4 |
250 |
钢管(Steel Pipe) 20GB/T8163 |
|
DN25B-25 |
32 |
4 |
250 |
||
|
DN40-25 |
DN40 |
48 |
4 |
300 |
|
|
DN50-25 |
DN50 |
60 |
4 |
350 |
|
|
DN50B-25 |
57 |
4 |
350 |
||
|
DN65-25 |
DN65 |
76 |
5 |
350 |
|
|
DN80-25 |
DN80 |
89 |
5 |
400 |
|
|
DN100-25 |
DN100 |
114 |
5 |
400 |
|
|
DN100B-25 |
108 |
5 |
400 |
||
|
DN125-25 |
DN125 |
140 |
6 |
500 |
|
|
DN125B-25 |
133 |
6 |
500 |
||
|
DN150-25 |
DN150 |
168 |
7 |
500 |
|
|
DN150B-25 |
159 |
7 |
500 |
||
|
DN200-25 |
DN200 |
219 |
7 |
500 |
|
|
DN250-25 |
DN250 |
273 |
8 |
800 |
|
|
DN300-25 |
DN300 |
325 |
8 |
800 |
|
|
DN350-25 |
DN350 |
356 |
8 |
900 |
|
|
DN350B-25 |
377 |
8 |
900 |
||
|
DN400-25 |
DN400 |
406 |
8 |
900 |
钢管(Steel Pipe) 16MnRGB6654 |
|
DN400B-25 |
426 |
8 |
900 |
||
|
DN450-25 |
DN450 |
457 |
8 |
900 |
|
|
DN450B-25 |
480 |
8 |
900 |
||
|
DN500-25 |
DN500 |
508 |
10 |
900 |
|
|
DN500B-25 |
530 |
10 |
900 |
||
|
DN600-25 |
DN600 |
610 |
10 |
1000 |
|
|
DN600B-25 |
630 |
10 |
1000 |
||
|
DN700-25 |
DN700 |
711 |
10 |
1200 |
|
|
DN700B-25 |
720 |
10 |
1200 |
||
|
DN800-25 |
DN800 |
813 |
12 |
1300 |
|
|
DN800B-25 |
820 |
12 |
1300 |
PN40压力等级绝缘接头
|
型号Type |
规格 Specification |
A |
B |
L |
钢管材质 |
|
DN25-40 |
DN25 |
34 |
4 |
250 |
钢管(Steel Pipe) 20GB/T8163 |
|
DN25B-40 |
32 |
4 |
250 |
||
|
DN40-40 |
DN40 |
48 |
4 |
300 |
|
|
DN50-40 |
DN50 |
60 |
4 |
350 |
|
|
DN50B-40 |
57 |
4 |
350 |
||
|
DN65-40 |
DN65 |
76 |
5 |
350 |
|
|
DN80-40 |
DN80 |
89 |
5 |
400 |
|
|
DN100-40 |
DN100 |
114 |
5 |
400 |
|
|
DN100B-40 |
108 |
5 |
400 |
||
|
DN125-40 |
DN125 |
140 |
6 |
500 |
|
|
DN125B-40 |
133 |
6 |
500 |
||
|
DN150-40 |
DN150 |
168 |
7 |
500 |
|
|
DN150B-40 |
159 |
7 |
500 |
||
|
DN200-40 |
DN200 |
219 |
7 |
500 |
|
|
DN250-40 |
DN250 |
273 |
8 |
800 |
|
|
DN300-40 |
DN300 |
325 |
10 |
800 |
|
|
DN350-40 |
DN350 |
356 |
12 |
900 |
|
|
DN350B-40 |
377 |
12 |
900 |
||
|
DN400-40 |
DN400 |
406 |
10 |
900 |
钢板(Steel Plate) 16MnR |
|
DN400B-40 |
426 |
10 |
900 |
||
|
DN450-40 |
DN450 |
457 |
10 |
900 |
|
|
DN450B-40 |
480 |
10 |
900 |
||
|
DN500-40 |
DN500 |
508 |
12 |
900 |
|
|
DN500B-40 |
530 |
12 |
900 |
||
|
DN600-40 |
DN600 |
610 |
14 |
1000 |
|
|
DN600B-40 |
630 |
14 |
1000 |
||
|
DN700-40 |
DN700 |
711 |
14 |
1200 |
|
|
DN700B-40 |
720 |
14 |
1200 |
||
|
DN800-40 |
DN800 |
813 |
16 |
1300 |
|
|
DN800B-40 |
820 |
16 |
1300 |
PN64压力等级绝缘接头 PN64
|
型号Type |
规格 |
A |
B |
L |
钢管材质 |
|
DN25-64 |
DN25 |
34 |
4 |
250 |
钢管(Steel Pipe) 20 GB/T8163 |
|
DN25B-64 |
32 |
4 |
250 |
||
|
DN40-64 |
DN40 |
48 |
4 |
300 |
|
|
DN50-64 |
DN50 |
60 |
4 |
350 |
|
|
DN50B-64 |
57 |
4 |
350 |
||
|
DN65-64 |
DN65 |
76 |
5 |
350 |
|
|
DN80-64 |
DN80 |
89 |
5 |
400 |
|
|
DN100-64 |
DN100 |
114 |
5 |
500 |
钢管(Steel Pipe) 16Mn GB/T6479 |
|
DN100B-64 |
108 |
5 |
500 |
||
|
DN125-64 |
DN125 |
140 |
6 |
600 |
|
|
DN125B-64 |
133 |
6 |
600 |
||
|
DN150-64 |
DN150 |
168 |
7 |
600 |
|
|
DN150B-64 |
159 |
7 |
600 |
||
|
DN200-64 |
DN200 |
219 |
8 |
600 |
|
|
DN250-64 |
DN250 |
273 |
10 |
800 |
|
|
DN300-64 |
DN300 |
325 |
12 |
800 |
|
|
DN350-64 |
DN350 |
356 |
8.8 |
1000 |
L450*1(X65) GB/T9711 |
|
DN400-64 |
DN400 |
406 |
10 |
1000 |
|
|
DN450-64 |
DN450 |
457 |
11 |
1000 |
|
|
DN500-64 |
DN500 |
508 |
12.5 |
1200 |
|
|
DN600-64 |
DN600 |
610 |
16 |
1200 |
|
|
DN700-64 |
DN700 |
711 |
17.5 |
1300 |
|
|
DN800-64 |
DN800 |
813 |
20 |
1300 |
