絕緣接頭Insulated joint
一、絕緣接頭概述：
絕緣接頭是燃氣輸配和石油管線系統中不可缺少的重要管道附件，主要應用于燃氣輸配系統和燃氣調壓站，其作用是將燃氣輸配管線的各段間、燃氣調壓站與輸配管線間相互絕緣隔離，保護其不受電化學腐蝕， 延長使用壽命，還可直接埋地使用。本公司的整體式絕緣接頭是在同國外產品進行對比、分析、研究的基礎上著重針對我國燃氣輸配管線中經常出現的泄漏問題進行設計的。
二、產品結構和工作原理：
整體式絕緣接頭由下面各零件組成：上、下管、套筒、絕緣件、密封件、絕緣涂層。在絕緣接頭的上、下管對接端面件，夾有絕緣件和密封件，形成具有絕緣性能的雙密封結構。套筒采用坡口焊接或與上導管直接焊接兩種形式，將絕緣件和上、下管牢固封裹在里面，形成“密封容器”，從而既保證了良好的絕緣效果，又大大提高了絕緣結構的承壓能力。
|
|
|
|
|
|
五、絕緣接頭參數表
PN25壓力等級絕緣接頭
|
型號Type |
規格 |
A |
B |
L |
鋼管材質 |
|
DN25-25 |
DN25 |
34 |
4 |
250 |
鋼管(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 |
鋼管(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壓力等級絕緣接頭
|
型號Type |
規格 Specification |
A |
B |
L |
鋼管材質 |
|
DN25-40 |
DN25 |
34 |
4 |
250 |
鋼管(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 |
鋼板(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壓力等級絕緣接頭 PN64
|
型號Type |
規格 |
A |
B |
L |
鋼管材質 |
|
DN25-64 |
DN25 |
34 |
4 |
250 |
鋼管(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 |
鋼管(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 |
