Cabirka Dhuumaha Birta 3 Jilayaasha:
Sharaxaada buuxda ee cabbirka tuubada birta waxaa ka mid ah dhexroorka dibadda (OD), dhumucda gidaarka (WT), dhererka tuubada (Caadiyan 20 ft 6 mitir, ama 40 ft 12 mitir).

Jilayaashan waxaan ku xisaabin karnaa miisaanka tuubada, inta tuubada cadaadisku qaadi karto, iyo qiimaha cagtii ama mitirkiiba.
Sidaa darteed, waa sababta aan had iyo jeer ugu baahanahay inaan ogaano cabbirka tuubada saxda ah.

Shaxda Cabbirrada Dhuumaha Birta

Cutubka Jadwalka Tubooyinka oo mm sida hoos ku qoran, halkan ka eeg Shaxda Jadwalka Dhuumaha oo inji ah.

Heerarka cabbirka ee tuubada birta
Waxaa jira heerar kala duwan oo lagu qeexo cabbirka tuubada birta, OD iyo dhumucda gidaarka. Inta badan waa ASME B 36.10, ASME B 36.19.

Tilmaamaha caadiga ah ee ku habboon ASME B 36.10M iyo B 36.19M
Labada ASME B36.10 iyo B36.19 labaduba waa qeexida caadiga ah ee cabbirka tuubada birta iyo qalabka.

ASME B36.10M
Heerku wuxuu daboolayaa jaangooyada cabbirka iyo cabbirrada tuubooyinka birta. Tuubooyinkan waxaa ka mid ah noocyo aan sinaba lahayn ama alxan leh, oo lagu dabaqo heerkul sare ama hooseeya iyo cadaadis.
Dhuumaha oo laga soocay tuubada (Pipe vs Tube), halkan dhuumaha ayaa si gaar ah loogu talagalay nidaamyada dhuumaha, dareeraha (saliida iyo gaaska, biyaha, slurry) gudbinta. Isticmaal heerka ASME B 36.10M.
Heerkan, Dhuumaha Dhexroorka Dibadda ee ka yar 12.75 in (NPS 12, DN 300), dhexroorka dhabta ah ee tuubooyinka ayaa ka weyn NPS (Cabirka Dhuumaha Magaca ah) ama DN ( Dhexroor Magaca ah).

Dhinaca gacanta, cabbirrada tuubada birta, dhexroorka dhabta ah ee dibadda ka baxsan oo leh lambarka tuubada ee dhammaan cabbirrada.

Waa maxay Jadwalka Cabbirrada Dhuumaha Birta?
Jadwalka dhuumaha birta waa hab tilmaamaya ASME B 36.10, oo sidoo kale loo isticmaalo heerar kale oo badan, oo lagu calaamadeeyay "Sch". Sch waa soo gaabinta jadwalka, guud ahaan ka muuqata heerka tuubada birta ee Maraykanka, kaas oo horgale u ah tiro taxane ah. Tusaale ahaan, Sch 80, 80 waa nambarka tuubada ee shaxda/miiska ASME B 36.10.

"Maadaama dhuumaha birta ah codsiga ugu muhiimsan uu yahay in lagu qaado dareerayaasha cadaadiska, markaa dhexroorkooda gudaha ayaa ah cabbirkooda muhiimka ah. Baaxaddan muhiimka ah waxa loo qaadanayaa sida magac-u-yaal (NB). Sidaa darteed, haddii dhuumaha birta ahi ay dareereyaasha cadaadis ku qaadaan, aad bay muhiim u tahay in tuubuhu yeesho xoog ku filan iyo dhumucdiisuna ku filan tahay. Markaa dhumucdiisuna waxay ku qeexan tahay Jadwalka, taas oo macnaheedu yahay jadwalka tuubada, oo loo soo gaabiyo SCH. Halkan ASME waa heerka la bixiyay iyo qeexida jadwalka dhuumaha."

Qaabka jadwalka tuubada:
Sch.=P/[ó]t×1000
P waa cadaadiska Naqshadeeyay, unugyada MPa;
[ó]t waa culeyska la oggol yahay ee agabka heerkulka naqshadeynta, Unugyada MPa.

Maxay SCH uga dhigan tahay cabbirrada tuubooyinka birta?
Sida lagu sharraxayo cabbirka birta birta ah, waxaan inta badan isticmaalnaa jadwalka tuubada, Waa hab matalaya dhumucda gidaarka tuubada oo leh lambar. Jadwalka tuubooyinka (sch.) ma aha dhumucda gidaarka, laakiin waa taxane dhumucdiisuna tahay darbiga. Jadwalka tuubooyinka kala duwan macnaheedu waa dhumucda gidaarka kala duwan ee tuubada birta ee dhexroorka isku mid ah. Tilmaamaha ugu badan ee jadwalku waa SCH 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160. Tirada miiska weyn, ayaa sii dhumuc weynaysa derbiga tuubooyinka, ayaa sarreeya iska caabbinta cadaadiska.

Jadwalka 40, 80 cabbirka tuubada birta macnaheedu waa
Haddii aad ku cusub tahay warshadaha tuubooyinka, maxaad had iyo jeer u aragtaa jadwalka 40 ama 80 tuubooyinka birta ah meel kasta? Waa maxay nooca walxaha loogu talagalay tuubooyinkan?
Sida aad u akhriday maqaallada kor ku xusan waxaad ogtahay in Jadwalka 40 ama 80 uu ka dhigan yahay dhumucda gidaarka tuubada, laakiin sababta ay had iyo jeer u raadiyaan iibsadayaasha?

Waa tan sababta:
Jadwalka 40 iyo 80 birta birta ah sida cabbirada caadiga ah ee looga baahan yahay warshadaha kala duwan, sababtoo ah cadaadiska guud ee tuubooyinkan, had iyo jeer waxaa la waydiiyaa tiro badan.

Heerka walxaha ee tuubooyinka dhumucdiisuna ma laha wax xaddidaad ah, waxaad weydiin kartaa sch 40 tuubooyinka birta ah, sida ASTM A312 Fasalka 316L; Ama sch 40 tube steel carbon, sida API 5L, ASTM A53, ASTM A106B, A 179, A252, A333 iwm.

Waa maxay Cabirka Dhuumaha Magaca (NPS)?
Cabbirka Dhuumaha Magaca (NPS) waa cabbirka caadiga ah ee Waqooyiga Ameerika ee tuubooyinka loo isticmaalo heerkulka sare ama hooseeya. Cabbirka tuubada waxaa lagu qeexaa laba tiro oo aan cabbir ahayn: cabbirka tuubada magacaaban (NPS) oo ku salaysan inji, iyo jadwal (Sched. ama Sch.).

Waa maxay DN ( dhexroorka magaca ah)?

Dhexroorka magacaaban waxa kale oo uu ka dhigan yahay dhexroor ka baxsan. Sababtoo ah sida gidaarka tuubada uu yahay mid aad u dhuuban, dhexroorka dibadda iyo gudaha ee tuubada birta ayaa ku dhow isku mid, markaa celceliska qiimaha labadaba waxaa loo isticmaalaa magaca dhexroorka tuubada. DN (dhexroor magaceed) waa dhexroorka guud ee tuubooyinka iyo qalabyada dhuumaha kala duwan. Dhexroorka isku midka ah ee tuubada iyo qalabka tuubooyinka ayaa la isku xiri karaa, waxay leedahay isbeddel. Inkasta oo qiimuhu uu ku dhow yahay ama la siman yahay dhexroorka tuubada gudaheeda, maaha dareenka dhabta ah ee dhexroorka tuubada. Cabbirka magaca waxaa lagu matalaa calaamad dhijitaal ah oo ay ku xigto xarafka "DN", oo ku calaamadee cutubka millimitir ka dib calaamadda. Tusaale ahaan, DN50, tuubo leh dhexroor magaceedu yahay 50 mm.

Jadwalka Heerka Miisaanka Dhuumaha
Heerka WGT (class miisaanka) waa calaamad muujinaysa dhumucda gidaarka tuubada goor hore, laakiin weli la isticmaalo. Waxay leedahay saddex darajo oo keliya, kuwaas oo kala ah STD (standar), XS (xoog dheeraad ah), iyo XXS (laba jibaaran oo xoog leh).
Tuubooyinkii hore ee wax soo saarka, caliber kastaa wuxuu leeyahay hal tilmaam oo kaliya, oo loo yaqaan tube standard (STD). Si loola tacaalo dareeraha cadaadiska sare, tuubada dhumucda (XS) ayaa soo muuqatay. XXS (laba jibaar dheeraad ah oo xoog leh) ayaa u muuqday inay xakamayso dareeraha cadaadiska sare. Dadku waxay bilaabeen inay u baahdaan isticmaalka dhuunta dhuuban ee dhaqaale ee dheeraadka ah ilaa ay ka soo baxayaan tignoolajiyada farsamaynta alaabta cusub, ka dibna si tartiib tartiib ah ayaa u muuqday lambarka tuubada sare. Xidhiidhka u dhigma ee ka dhexeeya jadwalka tuubada iyo fasalka miisaanka, tixraac ASME B36.10 iyo ASME B36.19 qeexitaanka.

Sidee loo qeexaa cabbirka birta iyo cabbirka si sax ah?
Tusaale ahaan: a. Lagu muujiyey sida "tuubo ka baxsan dhexroorka × dhumucda gidaarka", sida Φ 88.9mm x 5.49mm (3 1/2" x 0.216"). 114.3mm x 6.02mm (4 1/2 "x 0.237"), dhererka 6m (20ft) ama 12m (40ft), Dhererka Random Single (SRL 18-25ft), ama Dhererka Random Double (DRL 38-40ft).

b. Lagu muujiyey sida "NPS x Jadwalka", NPS 3 inch x Sch 40, NPS 4 inch x Sch 40. Cabbir la mid ah sida kor ku xusan qeexitaanka.
c. Loogu muujiyey sida "NPS x WGT Class", NPS 3 inch x SCH STD, NPS 4 inch x SCH STD. Isla cabbirka sare
d. Waxaa jira hab kale, Waqooyiga Ameerika iyo Koonfurta Ameerika, sida caadiga ah isticmaal "Pipe Outer Diameter x lb/ft" si loo qeexo cabbirka tuubada. Sida OD 3 1/2 ", 16.8 lb/ft. lb/ft waa rodol cagtiiba.