Umbhobho wentsimbi Dimension 3 abalinganiswa:
Inkcazo ngokupheleleyo kwidimension yentsimbi yombhobho ibandakanya i-diameter yangaphandle (OD), ubukhulu bodonga (WT), ubude bombhobho (Ngesiqhelo 20 ft 6 mitha, okanye 40 ft 12 yeemitha).

Ngokusebenzisa ezi mpawu singabala ubunzima bombhobho, ubungakanani boxinzelelo lombhobho onokuthwala, kunye neendleko ngeenyawo okanye ngemitha nganye.
Ngoko ke, yiyo loo nto sihlala sifuna ukwazi ubungakanani bombhobho obuchanekileyo.

Itshathi yobungakanani bombhobho wentsimbi

Iyunithi yeTshati yeShedyuli yoMbhobho nge-mm njengezantsi, jonga apha kwiTshati yeShedyuli yoMbhobho nge-intshi.

Imigangatho yobungakanani bombhobho wentsimbi
Kukho imigangatho eyahlukeneyo yokuchaza ubungakanani bombhobho wensimbi, i-OD kunye nobukhulu bodonga. Ikakhulu zii-ASME B 36.10, ASME B 36.19.

Iinkcukacha zomgangatho ofanelekileyo ASME B 36.10M kunye ne-B 36.19M
Zombini i-ASME B36.10 kunye ne-B36.19 yinkcazo esemgangathweni yemilinganiselo yombhobho wensimbi kunye nezixhobo.

ASME B36.10M
Umgangatho uquka ukumiselwa komgangatho wemibhobho yentsimbi kunye nobukhulu. Le mibhobho ibandakanya iintlobo ezingenamthungo okanye ezidityanisiweyo, kwaye zisetyenziswe kwiqondo lokushisa eliphezulu okanye eliphantsi kunye noxinzelelo.
Umbhobho owahlulwe kwi-tube (iPipe vs Tube), apha umbhobho ngokukhethekileyo kwiinkqubo zemibhobho, ulwelo (i-Oyile negesi, amanzi, uludaka) ukuhanjiswa. Sebenzisa umgangatho we-ASME B 36.10M.
Kulo mgangatho, umbhobho we-Diameter yangaphandle encinci kune-12.75 kwi-(NPS 12, DN 300), umbhobho owona bubanzi mkhulu kune-NPS (ubungakanani bombhobho oqingqiweyo) okanye i-DN (i-Nominal Diameter).

Esandleni, kwimilinganiso yetyhubhu yentsimbi, eyona dayamitha yangaphandle iyafana nenani lombhobho kuzo zonke iisayizi.

Yintoni iShedyuli yeMibhobho yentsimbi?
Ishedyuli yombhobho wentsimbi yindlela ebonisayo emelwe yi-ASME B 36.10, kwaye isetyenziswa nakweminye imigangatho emininzi, ephawulwe nge "Sch". I-Sch sisishunqulelo seshedyuli, ebonakala ngokubanzi kumgangatho wemibhobho yentsimbi yaseMelika, esisimaphambili senombolo yothotho. Umzekelo, iSch 80, 80 yinombolo yombhobho esuka kwitshathi/itheyibhile ASME B 36.10.

“Ekubeni umbhobho wentsimbi isicelo esingundoqo kukuthutha ulwelo phantsi koxinzelelo, ngoko ke ubukhulu bawo bangaphakathi bubukhulu bawo obubalulekileyo. Obu bukhulu bubalulekileyo buthathwa njenge-nominal bore (NB). Ngoko ke, ukuba umbhobho wentsimbi uthwala ulwelo ngoxinzelelo, kubaluleke kakhulu ukuba umbhobho ube namandla okwaneleyo kunye nobukhulu obaneleyo bodonga. Ngoko ubukhulu bodonga buchazwe kwiiShedyuli, oku kuthetha ukuba ishedyuli yombhobho, efinyeziweyo njenge-SCH. Apha i-ASME ngumgangatho onikiweyo kunye nenkcazo yeshedyuli yombhobho.

Ifomula yeshedyuli yombhobho:
Uluhlu.=P/[ó]t×1000
P luxinzelelo oluYiliweyo, iiyunithi kwiMPa;
[ó] t luvumeleke uxinzelelo lwemathiriyeli phantsi koyilo lobushushu, IiYunithi kwiMPa.

Ithetha ukuthini i-SCH kubungakanani bombhobho wentsimbi?
Njengoko ichaza iparamitha yombhobho wentsimbi, ngokuqhelekileyo sisebenzisa ishedyuli yombhobho, Yindlela emele ubukhulu bodonga lombhobho ngenani. Ishedyuli yombhobho ( sch. ) ayisiyonto yobunzima bodonga, kodwa uchungechunge lwamadonga. Ishedyuli yombhobho eyahlukileyo ithetha ubukhulu bodonga olwahlukileyo lombhobho wentsimbi kwidayamitha efanayo. Ezona zibonakaliso zeshedyuli zi-SCH 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160. Inani letafile liba likhulu, kokukhona liba likhulu umphezulu udonga lombhobho, ukuphakama kokumelana noxinzelelo.

IShedyuli ye-40, i-80 imilinganiselo yombhobho wensimbi ithetha
Ukuba umtsha kwishishini lombhobho, kutheni uhlala ubona ishedyuli 40 okanye 80 umbhobho wentsimbi kuyo yonke indawo? Loluphi uhlobo lwemathiriyeli yale mibhobho?
Njengoko ufunde amanqaku angasentla uyazi ukuba iShedyuli ye-40 okanye i-80 imele ubukhulu bodonga lombhobho, kodwa kutheni isoloko ikhangelwa ngabathengi?

Nasi isizathu:
IShedyuli ye-40 kunye ne-80 yombhobho wensimbi njengobungakanani obuqhelekileyo obufunekayo kumashishini ahlukeneyo, ngenxa yoxinzelelo oluqhelekileyo le mibhobho ithwala, isoloko ibuzwa ngobuninzi obukhulu.

Umgangatho wezinto ezibonakalayo kwimibhobho yobukhulu obunjalo awunayo imida, unokubuza i-sch 40 ipayipi yensimbi engenasici, njenge-ASTM A312 Grade 316L; Okanye sch 40 carbon steel pipe, ezifana API 5L, ASTM A53, ASTM A106B, A 179, A252, A333 njl.

Yintoni ubungakanani boMbhobho oQelekileyo (NPS)?
Ubungakanani bombhobho obizwa ngokuba yi-NPS (i-NPS) yiseti yaseMntla yaseMelika yobungakanani obuqhelekileyo bemibhobho esetyenziselwa uxinzelelo oluphezulu okanye oluphantsi kunye namaqondo obushushu. Ubungakanani bombhobho bucaciswe ngamanani amabini angena-dimensional: ubungakanani bombhobho oqhelekileyo (NPS) ngokusekelwe kwii-intshi, kunye neshedyuli (Sched. okanye iSch.).

Yintoni i-DN (i-Nominal Diameter)?

Idayamitha yesibizo ikwathetha idiameter yangaphandle. Ngenxa yokuba udonga lombhobho luncinci kakhulu, ngaphandle nangaphakathi ngaphakathi kombhobho wensimbi uphantse ufana, ngoko ke ixabiso eliqhelekileyo leeparamitha zombini lisetyenziswa njengegama lobubanzi bombhobho. I-DN (i-diameter ye-nominal) yi-diameter eqhelekileyo yeepayipi ezahlukeneyo kunye nezixhobo zombhobho. Ububanzi obufanayo bombhobho kunye nokufakelwa kombhobho kunokudibaniswa, kunokutshintshana. Nangona ixabiso lisondele okanye lilingana nedayamitha yangaphakathi yombhobho, ayisiyiyo ingqiqo yokwenene yobubanzi bombhobho. Ubungakanani obuqhelekileyo bumelwe ngumqondiso wedijithali olandelwa ngunobumba "DN", kwaye uphawule iyunithi ngeemilimitha emva kwesimboli. Ngokomzekelo, i-DN50, umbhobho onobubanzi obuyi-50 mm.

Umbhobho Weight Class iShedyuli
Iklasi ye-WGT (iklasi yobunzima) luphawu lobunzima bodonga lombhobho kwasekuqaleni, kodwa lusasetyenziswa. Inamabanga amathathu kuphela, angala STD ( standard ), XS ( extra strong ), kunye ne XXS ( double extra strong).
Ngombhobho wokuvelisa kwangaphambili, i-caliber nganye inenkcazo enye kuphela, ebizwa ngokuba yi-standard tube (STD). Ukuze ujongane noxinzelelo oluphezulu lwamanzi, umbhobho wokuqina (XS) uvele. Umbhobho we-XXS (owomelele ngokuphindwe kabini) ubonakale ulawula ulwelo oluphezulu loxinzelelo. Abantu baqala ukufuna ukusetyenziswa kombhobho obhityileyo obhityileyo de kwavela iteknoloji entsha yokulungisa izinto, emva koko yavela ngokuthe ngcembe le nombolo yombhobho ingasentla. Ubudlelwane obuhambelanayo phakathi kweshedyuli yombhobho kunye neklasi yobunzima, bhekisa kwi-ASME B36.10 kunye ne-ASME B36.19 yokucaciswa.

Indlela yokuchaza imilinganiselo yepayipi yensimbi kunye nobukhulu ngokuchanekileyo?
Umzekelo: a. Ivakaliswe “njengombhobho ongaphandle kwedayamitha × ubukhulu bodonga”, njenge-Φ 88.9mm x 5.49mm (3 1/2” x 0.216”). 114.3mm x 6.02mm (4 1/2” x 0.237”), ubude 6m (20ft) okanye 12m (40ft), Single Random Length (SRL 18-25ft), okanye kabini Random Ubude (DRL 38-40ft).

b. Icaciswe “njengeNPS x iShedyuli”, iNPS 3 intshi x Sch 40, NPS 4 intshi x Sch 40.
c. Ichazwe njenge "NPS x WGT Class", NPS 3 intshi x SCH STD, NPS 4 intshi x SCH STD. Ubungakanani obufanayo ngasentla.
d. Kukho enye indlela, eNyakatho Melika naseMzantsi Melika, ngokuqhelekileyo isebenzisa "I-Pipe Outer Diameter x lb / ft" ukuchaza ubungakanani bombhobho. Njengo-OD 3 1/2”, 16.8 lb/ft. lb/ft yiponti ngenyawo.