小制作管件、法兰、短管连接

管道连接最小尺寸设计规定(试行)（小外径钢制管件、法兰、短管连接）编号:日期:20050113版次:0主编工艺室批准第1页共20页1范围1.1本标准规定了石油化工装置配管设计过程中B系列国标管件之间及其与JB钢制管法兰和短管间的最小连接尺寸。1.2本标准适用于石油化工装置配管设计过程中DN15～DN40B系列和DN40～DN500B系列国标管件及其与JB钢制管法兰之间连接。1.3本标准不适用上述管件与ANSI法兰、SH法兰之间的连接。2一般规定2.1本标准中所采用的各类管道组成件应符合以下规定管件：《钢制对焊无缝钢管》GB/T12459—2005（B系列）《钢制承插焊管件》GB/T14383—93（B系列）《钢板制对焊管件》GB/T13401—2005（B系列）法兰：《凸台面板式平焊钢制管法兰》JB/T81—94（系列2）《凸台面对焊钢制管法兰》JB/T82.1—94（系列2）《凹凸面对焊钢制管法兰》JB/T82.1—94（系列2）《环连接面对焊钢制管法兰》JB/T82.4—94（系列2）2.2管子壁厚应符合《石油化工企业钢管尺寸系列》（SH3405）的规定。2.3对焊件之间的焊缝间隙按零计算。2.4有关弯头的连接尺寸均以长半径弯头（L）的基准进行计算；使用短半径弯头（S）时，需要重新计算。2.5法兰与三通之间的连接尺寸“H”或“J”是以等径三通的尺寸（M值）算出的；使用异径三通时，需重新计算，即三通M值与法兰D值（E值）之和。第2页共20页2.6平焊法兰之间的连接按单头螺栓考虑，对焊法兰之间的连接按双头螺柱考虑，双头螺柱的螺母为加厚型。3符号说明3.1在各个管道连接最小尺寸中使用的符号规定如下：L—长半径（R=1.5DN）90°对焊弯头尺寸；S—短半径（R=1DN）90°对焊弯头尺寸；D—平焊法兰加短管的最小尺寸；E—对焊法兰的最小尺寸；F—按长半径弯头尺寸和“D”值确定的最小尺寸；G—按长半径弯头和“E”值确定的最小尺寸；H—按等径三通尺寸和“D”值确定的最小尺寸；J—按等径三通尺寸和“E”值确定的最小尺寸；SO—平焊法兰WN—对焊法兰3.2各类阀门尺寸所使用的符号规定如下：L—分别为“Z41”，“J41”和“H44”型阀门的结构长度；H—为闸阀或截止阀阀杆全开时的高度或止回阀的凸起部高度；D0—手轮直径。第3页共20页4．管道连接最小尺寸4．1DN15承插件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN2.5PN4.0PN4.0PN4.0PN6.3PN6.3PN10PN16A959595959595105105105110B141616161824.526.530.5C1214D6060E353535354854.554.556.5F100100G115115115115130140140150HJKN螺栓直径M12X40M12X50M12X60M12X70M12X70M12X70M12X70M12X85M12X85M16X10螺栓数量4444444444闸阀L130130130130130170170170170H250250235235235235235250250Do160160200200200200200200200截止阀L100100130130130170170170170H111111230220220220220231240Do6565120200200200200200200止回阀第4页共20页4．2DN20承插件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10PN16A105105105105105105125125125130B141616162026.528.532.5C1416D6060E383636365662.562.561.5F100100G130130130130150150150150HJKN螺栓直径M12X50M12X50M12X60M12X70M12X70M12X70M12X80M12X95M16X100M20X11螺栓数量4444444444闸阀L150150150150150190190190190H305305284284284284284288280Do160160250250250250250250250截止阀L150150150150150190190190190H132132275258258258258306272Do6565140250250250250250250止回阀第5页共20页4．3DN25承插件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A115115115115115115135135135140B141616162228.530.534.5C1416D6060E403838385864.564.561.5F110110G130130130130150160160160HJKN螺栓直径M12X50M12X60M12X60M12X70M12X70M12X70M16X80M16X100M16X100M20X120螺栓数量4444444444闸阀L160160160160160210210210210H330330303303303303303310310Do180180250250250250250250250截止阀L160160160160160210210210210H142142295272272272272306295Do8080160250250250250250250止回阀160160160210210H145145145145145第6页共20页4．4DN40承插件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A145145145145145145165165165175B161818182430.532.538.5C1416D6060E454848486874.576.571.5F130130G140150150150170170180170HJKN螺栓直径M16X60M16X60M16X70M16X80M16X80M16X80M20X100M20X115M20X110M24X140螺栓数量4444444444闸阀L240240200200200240240260260H425425358358358358358395395Do200200300300300300300300350截止阀L200200200200200260260260260H203203354323323323323380375Do160160200300300300300350350止回阀200200200260260260260H160160160162162第7页共20页4．5DN40对焊件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A145145145145145145165165165175B161818182430.532.538.5C1820D7070E454848486874.576.571.5F110110G102105105105125132134129H127127J102105105105125135134129K7575N100105105105125130135130螺栓直径M12X50M12X60M12X60M12X70M12X70M12X70M16X80M16X100M16X100M24X140螺栓数量4444444444闸阀L240240200200200240240260260H425425358358358358358395395Do200200300300300300300350350截止阀L200200200200200260260260260H203203354323323323323380375Do160160200300300300300350350止回阀200200200260260H160160160160162第8页共20页4．6DN50对焊件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A160160160160160160175175195215B1620202026343644C1822D7080E4848484870788098F110110G124124124124146154156174H134144J112112112112134142144162K7580N105105105105125130130155螺栓直径M16X60M16X70M16X70M16X80M16X80M16X80M20X100M20X110M22X120M22X140螺栓数量4444444444闸阀L250250250250250250250300300H402402415415415415415467467Do200200350350350350350400400截止阀L230230230230230300300300300H230230412373373373373430455Do180180240350350320320400400止回阀230230230300300300300H177160160177177210210第9页共20页4．7DN65对焊件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A180180180180180180200200220245B1822222228364052C2024D7080E50525252758392113F165175G143147147147170178187208H146156J126128128128151159168189K95100N125130130130150160170190螺栓直径M16X60M16X70M16X80M16X90M16X90M16X90M20X10M20X12M22X13M27X16螺栓数量4448888888闸阀L265265265280280280280280340H402402452548548473473545620Do200200240240240280280480400截止阀L290290290290290340340340H260260445433433430430462Do180180240280280320320450止回阀290290290340340340H185192192197197227第10页共20页4．8DN80对焊件配管连接最小尺寸单位：mm压力等记号级凸台面平焊法兰凸台面对焊法兰凹凸面对焊法兰梯形槽面对焊法兰PN1.0PN1.6PN1.6PN2.5PN4.0PN4.0PN6.3PN6.3PN10.0PN16.0A195195195195195195210210230260B2020242430384254C2024D7080E52555858758398118F184194G166169172172189198212232H15