Iinkcukacha zemibhobho yeShedyuli 120 zibonisa ukuba ubukhulu bodonga lombhobho buyi-0.719 intshi kwi-NPS 8″, 0.844 intshi kwi-NPS 10″, kunye ne-1.000 intshi kwi-NPS 12″. Umbhobho weShedyuli 120 oyi-intshi ezi-8 uphatha malunga ne-3,335 PSI kubushushu begumbi, xa kuthelekiswa ne-2,319 PSI kwiShedyuli 80. Inzuzo yoxinzelelo lweSch 120 yenza ukuba ibe yeyona nto ikhethwayo kwimisebenzi yomphunga oxinzelelo oluphezulu, imibhobho yenkqubo yeekhemikhali, kunye neenkqubo zemibhobho yeoyile negesi ezibalulekileyo.
Sekunjalo uninzi lweenjineli alukwazi ukufumana isalathiso esikhethekileyo seShedyuli 120. Le nkqubo ikhona phakathi kolwazi olubhalwe ngokupheleleyo lweShedyuli 80 kunye nolwazi olugqithisileyo lweShedyuli 160. Idatha yeSch 120 efunekayo ngamaqela okuthenga iya kubanceda bafumane ulwazi kuba lukhona njengongeniso olunye ngaphakathi kwiidathabheyisi ezinkulu zobukhulu bodonga, ezingaboneleli ngeenkcukacha malunga novavanyo loxinzelelo okanye ukufumaneka kwemveliso okanye izikhokelo zokukhetha phakathi kwayo kunye neemveliso ezikufutshane.
Eli nqaku lizalisa loo msantsa. Eli nqaku libonelela ngemilinganiselo epheleleyo yeepayipi zeShedyuli 120 kunye nobukhulu bodonga lwazo kunye nolwazi lokulinganisa uxinzelelo. Iinkcukacha zeSch 120 zibonisa ukusetyenziswa okufanelekileyo kweSch 120, umthamo wazo ogqithisileyo kwiimfuno ezithile, kunye nolwazi lwexesha lokuqalisa olufunekayo.
IItrakthi ezibalulekileyo
- Ubukhulu bodonga lwepayipi yeshedyuli ye-120 buqala kwi-0.562″ kwi-NPS 6″ ukuya kwi-1.000″ kwi-NPS 12″ phantsi kwe-ASME B36.10M.
- Umthamo woxinzelelo uphezulu malunga ne-30-50% kuneShedyuli 80 ye-NPS efanayo.
- IShedyuli 120 ayisoloko igcinwa ngabasasazi kwaye idla ngokufuna ixesha loku-odola elimiselweyo leeveki ezi-4-8.
- Ishedyuli engenamthungo ye-ASTM A53 Grade B 120 kwiimpambo ze-NPS 8″ ~3,335 PSI kubushushu begumbi, yehla kakhulu kubushushu obuphezulu.
- Ukunyamezela ubukhulu bodonga lwe-ASTM obuyi--12.5% kusebenza kwiShedyuli 120, ngoko ke soloko uqinisekisa izatifikethi zovavanyo lwe-mill ukuze ufumane inkonzo ebalulekileyo.
Yintoni iShedyuli 120 Pipe?
Umbhobho weShedyuli 120 yishedyuli yombhobho ophakathi onzima ochazwe yi- ASME B36.10M yentsimbi yekhabhoni kunye ne-alloy. Iphakathi kweShedyuli 80 kunye neShedyuli 160 kuluhlu lweshedyuli. Kuyo nayiphi na ubungakanani bombhobho obunikiweyo , iShedyuli 120 inobubanzi obufanayo bangaphandle njengoShedyuli 40 okanye iShedyuli 80. Umahluko ludonga olunzima, olunciphisa ububanzi bangaphakathi kwaye lonyusa amandla oxinzelelo.
Ubudlelwane phakathi kwenani leshedyuli kunye nobukhulu bodonga abuhambelani ngokuthe ngqo. Ishedyuli 120 ayityebi nje nge-50% kuneShedyuli 80. Kwi-NPS 8″, iSch 80 inodonga oluyi-intshi eziyi-0.500 ngelixa iSch 120 inodonga oluyi-intshi eziyi-0.719, ukonyuka nge-44%. Kwi-NPS 12″, iSch 80 inodonga oluyi-intshi eziyi-0.688 ngelixa iSch 120 inodonga oluyi-intshi eziyi-1.000, ukonyuka nge-45%. Ukuze ufumane ingcaciso epheleleyo yendlela amanani eshedyuli asebenza ngayo, jonga isikhokelo sethu sentsingiselo yeshedyuli yombhobho.
IShedyuli 120 idla ngokuchazwa kwi-NPS 6″ nangaphezulu kwi-B36.10M. Iisayizi ezincinci azinalo uphawu lwe-Sch 120 okanye aziveliswa rhoqo. Ukuba iprojekthi yakho ifuna umbhobho odonga olunzima ngaphantsi kwe-NPS 6″, uya kudla ngokuchaza iShedyuli 160 okanye i-XXS endaweni yoko.
Ukuba ufuna uncedo lokukhetha ishedyuli efanelekileyo kwiimfuno zakho zoxinzelelo, iqela lethu leengcebiso zobugcisa linokujonga iinkcukacha zakho kunye nemigangatho yezinto eziphathekayo.
IShedyuli ye-120 yeMibhobho yoBume kunye nokutyeba kweDonga
Itheyibhile engezantsi idwelisa ubungakanani obuqhelekileyo bepayipi yeShedyuli 120 yentsimbi yekhabhoni phantsi kwe-ASME B36.10M. Igubungela ubungakanani obuveliswa rhoqo ukusuka kwi-NPS 6″ ukuya kwi-NPS 12″.
Ishedyuli ye-120 yeMibhobho yoBume beTheyibhile
| NPS | OD (ngaphakathi) | Udonga (ngaphakathi) | Isazisi (kwi) | Ubunzima (lb / ft) | I-OD (mm) | Udonga (mm) | Ubunzima (kg / m) |
|---|---|---|---|---|---|---|---|
| 6 " | 6.625 | 0.562 | 5.501 | 36.4 | 168.3 | 14.27 | 54.2 |
| 8 " | 8.625 | 0.719 | 7.187 | 54.7 | 219.1 | 18.26 | 81.4 |
| 10 " | 10.750 | 0.844 | 9.062 | 74.6 | 273.1 | 21.44 | 111.0 |
| 12 " | 12.750 | 1.000 | 10.750 | 88.6 | 323.9 | 25.40 | 131.8 |
Le theyibhile ibonisa iipateni ezimbini ezibalulekileyo. Okokuqala, ubukhulu bodonga buyanda nge-NPS. Okwesibini, ububanzi bangaphakathi buyancipha kakhulu njengoko udonga lusiba lukhuni. Umbhobho we-Schedule 120 oyi-intshi ezili-12 unobubanzi bangaphakathi obuyi-intshi ezili-10.750 kuphela. Ukunciphisa indawo yokuhamba kwamanzi kubalulekile xa kujongwa ubungakanani bepompo kunye nokubalwa koxinzelelo.
Ukuze ufumane idatha epheleleyo yobukhulu bodonga kuzo zonke iishedyuli, jonga itshathi yethu yobukhulu bodonga lwepayipi.
Ishedyuli 80 vs Ishedyuli 120 vs Ishedyuli 160 Ubukhulu bodonga
| NPS | Udonga lweSch 80 | Udonga lweSch 120 | Udonga lweSch 160 | Ukunyuka kwe-Sch 80 ukuya kwi-120 | Ukunyuka kwe-Sch 120 ukuya kwi-160 |
|---|---|---|---|---|---|
| 6 " | 0.432 " | 0.562 " | 0.719 " | 30% | 28% |
| 8 " | 0.500 " | 0.719 " | 0.906 " | 44% | 26% |
| 10 " | 0.594 " | 0.844 " | 1.125 " | 42% | 33% |
| 12 " | 0.688 " | 1.000 " | 1.312 " | 45% | 31% |
Ukunyuka ukusuka kwiShedyuli 80 ukuya kwiShedyuli 120 kukhulu kunokunyuka ukusuka kwiShedyuli 120 ukuya kwiShedyuli 160. Olo lwalamano lungekho mgca luyamangalisa abanye oonjineli. Ikwachaza isizathu sokuba iSch 120 idla ngokuba lolona khetho luphezulu nolunexabiso eliphantsi xa iSch 80 inganelanga.
Ishedyuli 120 Uvavanyo loxinzelelo lweMibhobho
Uvavanyo loxinzelelo lombhobho weShedyuli 120 luxhomekeke kudidi lwezinto, ubushushu, kunye nokuba umbhobho awuthungwanga okanye udityanisiwe. Amaxabiso angezantsi abalwa kusetyenziswa ifomula kaBarlow yombhobho ongenamthungo we-ASTM A53 Grade B kubushushu begumbi (100°F).
Uvavanyo loxinzelelo lweShedyuli 120 yi-NPS (ASTM A53 Grade B, i-Feelless, i-Room Temp)
| NPS | Udonga (ngaphakathi) | OD (ngaphakathi) | Uxinzelelo Oluphezulu (i-PSI) | Uxinzelelo olukhulu (ibha) |
|---|---|---|---|---|
| 6 " | 0.562 | 6.625 | 3,395 | 234 |
| 8 " | 0.719 | 8.625 | 3,335 | 230 |
| 10 " | 0.844 | 10.750 | 3,138 | 216 |
| 12 " | 1.000 | 12.750 | 3,137 | 216 |
Olu vavanyo luthatha ulwakhiwo olungenamthungo olune-joint efficiency factor eyi-1.0. Umbhobho we-Welded ERW uphethe i-E = 0.85 joint efficiency phantsi kwe-ASME B31.3, nto leyo enciphisa uxinzelelo oluvumelekileyo malunga ne-15%. Kwimbhobho ye-Schedule 120 ERW eyi-10-intshi, uxinzelelo oluvumelekileyo luyehla ukusuka kwi-3,138 PSI ukuya kwi-2,667 PSI.
Uthelekiso loxinzelelo lweShedyuli 80 vs iShedyuli 120
| NPS | Uxinzelelo lweSch 80 (PSI) | Uxinzelelo lweSch 120 (PSI) | Nyusa | % Nyusa |
|---|---|---|---|---|
| 6 " | 2,608 | 3,395 | 787 | 30% |
| 8 " | 2,319 | 3,335 | 1,016 | 44% |
| 10 " | 2,207 | 3,138 | 931 | 42% |
| 12 " | 2,157 | 3,137 | 980 | 45% |
Ukuze uthelekise neereyithingi zeShedyuli 80, bona isikhokelo sethu sokulinganisa uxinzelelo lwepayipi yeShedyuli 80. Kwizicelo ezilula, isikhokelo sethu sokulinganisa uxinzelelo lwepayipi yeShedyuli 40 sigubungela ishedyuli yesiqhelo yemizi-mveliso.
Ukuhla kobushushu
Umthamo woxinzelelo lwezinto uyancipha ngenxa yokunyuka kwamaqondo obushushu okusebenza. I-ASTM A53 Grade B ngokubanzi ayikhuthazwa ukuba isebenze rhoqo ngaphezu kwe-750°F. Uxinzelelo oluvumelekileyo lwe-A53 Grade B kwi-750°F luyancipha malunga ne-40%, nto leyo ekhokelela ekunciphiseni ngokulinganayo komlinganiselo woxinzelelo ngaphezu kolu bushushu. Umthamo woxinzelelo wombhobho weShedyuli 120 oyi-intshi ezi-8 onomlinganiselo wobushushu begumbi oyi-3,335 PSI uya kwehla uye kwi-2,000 PSI xa usebenza kwi-750°F.
Iinjineli zikhetha i-ASTM A106 Grade B kwizicelo zobushushu obuphezulu ezidlula i-750°F kuba inika imida yoxinzelelo olukhulu kumaqondo obushushu aphezulu. Soloko uqinisekisa ukuba iinkcukacha zezinto zihambelana nobushushu bakho bokusebenza ngaphambi kokuba ugqibezele iodolo yeShedyuli 120.
Ishedyuli 120 Izixhobo zePipe kunye neenkcukacha
Umbhobho weSchedule 120 wentsimbi yekhabhoni wenziwa ngokwe-ASTM A53 Grade B okanye i-ASTM A106 Grade B. Umgangatho we-ASTM A53 uchaza iindlela zokuvelisa umbhobho ongenamthungo kunye nowelding, ngelixa i-ASTM A106 ivumela kuphela imibhobho engenamthungo kwizicelo zobushushu obuphezulu. I-API 5L Grade B ikwaqhelekile kwizicelo zeoyile negesi.
Imfuno yemarike yentsimbi engatyiwayo yeShedyuli 120 ihlala iphantsi kuneyentsimbi yekhabhoni. I-ASME B36.19 ibonelela ngobukhulu bentsimbi engatyiwayo, kodwa imibhobho yentsimbi engatyiwayo yeSch 120 ayikho kuzo zonke iiklasi ezikhoyo. Iinjineli zihlala zicela umbhobho wentsimbi engatyiwayo weShedyuli 80S okanye weShedyuli 160S xa ziyifuna, okanye zikhetha umbhobho ongenamthungo ohambelana nemigangatho ye-ASTM A312 Grade 304 okanye 316. Ukuze ufumane iimveliso zemibhobho yentsimbi engatyiwayo, jonga ikhathalogu yethu yemibhobho yentsimbi engatyiwayo.
Ukunyamezelana kwezixhobo zokugaya kubalulekile kwiShedyuli 120 njengokuba kunjalo nakwiishedyuli ezilula. Imigangatho ye-ASTM A53 kunye ne-A106 ivumela ubukhulu bodonga ukuba bulingane nge-12.5% ngaphantsi kwexabiso eliqhelekileyo eliqhelekileyo. Umbhobho weShedyuli 120 wee-intshi ezili-12 onodonga oluqhelekileyo lwe-intshi ezili-1.000 kufuneka ugcine ubukhulu bodonga obuncinci obuyi-0.875 yee-intshi. Umahluko we-0.125 yee-intshi ubangela ukwehla komthamo woxinzelelo ohambelana nokwehla kwepesenti.
Ubukhulu bodonga bokwenyani lwemigca ebalulekileyo yoxinzelelo oluphezulu kufuneka buqinisekiswe ngesatifikethi sovavanyo lwe-mill.
Ubunzima, Ixabiso kunye nokufumaneka kweShedyuli 120
Umbhobho weShedyuli 120 unzima kakhulu kuneShedyuli 80. Obo bunzima buchaphazela yonke into ukusuka kwizixhasi zembhobho ukuya kwiindleko zokuthumela.
Uthelekiso lobunzima: Ishedyuli 80 vs Ishedyuli 120
| NPS | I-Sch 80 (lb/ft) | I-Sch 120 (lb/ft) | Ukunyuka (lb/ft) | % Nyusa |
|---|---|---|---|---|
| 6 " | 28.6 | 36.4 | 7.8 | 27% |
| 8 " | 28.6 | 54.7 | 26.1 | 91% |
| 10 " | 40.5 | 74.6 | 34.1 | 84% |
| 12 " | 49.6 | 88.6 | 39.0 | 79% |
Ukunyuka kobunzima kuyamangalisa kwi-NPS 8″ nangaphezulu. Umgama weemitha ezili-100 wepayipi yeShedyuli 120 eyi-8-intshi inobunzima obuziikhilogram ezingama-5,470, xa kuthelekiswa neekhilogram ezingama-2,860 zeShedyuli 80. Iinkxaso zakho zepayipi, ii-ankile, kunye nentsimbi yokwakha kufuneka zenzelwe loo mthwalo wongezelelweyo. Ukuze ufumane idatha yobunzima echanekileyo kuzo zonke iishedyuli, jonga itshathi yethu yobunzima bepayipi yentsimbi.
Ixabiso lezinto zokwakha liyanyuka ngokobunzima bazo. IShedyuli 120 inokunyuka kwamaxabiso angama-25-35 ekhulwini xa kuthelekiswa neShedyuli 80 kwiinkcukacha ezifanayo ze-NPS kwaye ixabisa ngaphantsi ngama-15-20 ekhulwini kuneShedyuli 160. Umahluko weendleko phakathi kweemveliso ezimbini uqokelelana ngesantya esikhawulezayo ngexesha leeprojekthi ezinkulu. Iqela lokuthenga liza kuhlawuliswa iindleko eziphezulu xa lichaza iSch 120 yeenyawo ezingama-2,000 zombhobho we-intshi ezili-10 kuba iSch 80 ibiya kwanela.
UJames Okafor, igosa lokuthenga kwifemu yeenkonzo zeoyile yaseNigeria, wafunda ngokufumaneka kweShedyuli 120 ngendlela enzima. Iqela lalifuna imibhobho ephambili yokutshintshwa kwiprojekthi yabo yokujova amanzi enoxinzelelo oluphezulu ngo-2024. Ingcaciso yayifuna imibhobho yeShedyuli 120 kwi-NPS 8.
UJames wayekholelwa ukuba umsasazi wakhe oqhelekileyo uza kubonelela ngepayipi evela kwimpahla esetyenzisiweyo kuba bayenzile kwiShedyuli 40 kunye neShedyuli 80.
Wachitha iintsuku ezintathu efowunela abasasazi ngaphambi kokuba afumanise ukuba amashishini asekuhlaleni ayengenayo iSch 120 ngolo hlobo. Umenzi wadinga iiveki ezisibhozo ukuvelisa loo nto kuba kwakufuneka yenziwe iodolo.
Ukulibaziseka kweprojekthi kubize inkampani yakhe i-$12,000 kubasebenzi abalinde ixesha elide. Ishedyuli 120 ayisoloko ikwishelufu.
Izicelo: Apho iShedyuli 120 iphumelela khona
Umbhobho weShedyuli 120 uzalisa indawo ethile. Le nto ayisebenzi njengokhetho oluphambili lokusetyenziswa kwemibhobho yemizi-mveliso ngokubanzi. Le nkqubo isebenza njengokhetho lokuphucula xa izinto zeShedyuli 80 zingamelani noxinzelelo lokusebenza kunye namandla oomatshini.
Eyona ndlela iphambili yokusebenzisa le nkqubo ibandakanya ukusetyenziswa kwamanzi ashushu ngomphunga kunye namanzi ebhoyila. Izityalo zamandla kunye neenkqubo zebhoyila zoshishino zisebenza kumanqanaba oxinzelelo anokuxhaswa zizixhobo zeSch 80 kuphela phantsi kweemeko eziqhelekileyo. Uyilo lwenkqubo yeSch 120 lunika abasebenzisi ukhuseleko olongezelelweyo kodwa luthintela iindleko ezigqithisileyo kunye nobunzima obuhambelana neSch 160.
Imigca yenkqubo ebalulekileyo ethutha ulwelo olubolayo phantsi koxinzelelo igcinwa zizityalo zokucubungula iikhemikhali kunye nemisebenzi yokucoca ngeSch 120. Udonga olutyebileyo lubonelela ngamandla oxinzelelo kunye nesibonelelo esongezelelweyo sokubola.
Iprojekthi yokwandisa umzi-mveliso wokucoca inkunkuma waseLouisiana ikhethe iSch 120 kumgca wokuphakela i-hydrocracker oziisentimitha ezili-10 emva kokuba izibalo zobunjineli zibonise ukuba iSch 80 iza kusebenza nge-8 ekhulwini yomda wayo woxinzelelo phantsi kweemeko zoxinzelelo loyilo. Injineli yeprojekthi, uChen Wei, ikhethe iSch 120 endaweni yeSch 160 kuba udonga lwe-160 beluya kunciphisa ububanzi bangaphakathi ngaphantsi kobuncinci obufunekayo kwisantya sokuhamba kwamanzi. ISch 120 yayiyeyona shedyuli kuphela eyanelisa zombini iimfuno zoxinzelelo kunye nokuhamba kwamanzi.
Imigca yokuqokelela ioyile negesi isebenzisa iSch 120 kwimigca ye-trunk ye-NPS ukusuka kwi-8″ ukuya kwi-12″ kwiinkqubo zokuqokelela ezinoxinzelelo oluphezulu. Ishedyuli ijongana noxinzelelo lwentloko yemithombo ngaphandle kokufuna udonga olugqithisileyo lweSch 160, nto leyo eya kwenza ukufakwa kunye nokuwelda kube nzima ngakumbi.
Ii-mains zokukhusela umlilo ezisebenzela izakhiwo eziphakamileyo kunye nezakhiwo zoshishino zihlala zifuna i-Sch 120 ukuba inike amandla okuphatha uxinzelelo aneleyo kwiinkqubo zazo zeempompo ezimileyo kumanqanaba esakhiwo esisezantsi.
Ukuze ufumane iimveliso zemibhobho yentsimbi yekhabhoni kwiishedyuli eziqhelekileyo nezinkulu, jonga ikhathalogu yethu yemibhobho yentsimbi yekhabhoni.
Ishedyuli 120 vs Ishedyuli 80 vs Ishedyuli 160
Ukukhetha phakathi kweShedyuli 80, 120, kunye ne-160 kufuna okungaphezulu kokuthelekisa amanqaku oxinzelelo. Kufuneka uqwalasele nendawo yokuhamba kwamanzi, ubunzima, iindleko, kunye nokufumaneka kwawo.
Uthelekiso olusecaleni kwi-NPS 10″
| ipropati | Isiqendu 80 | Isiqendu 120 | Isiqendu 160 |
|---|---|---|---|
| Ubungakanani bodonga | 0.594 " | 0.844 " | 1.125 " |
| Ngaphakathi ubukhulu | 9.562 " | 9.062 " | 8.500 " |
| Ubunzima ngenyawo ngalinye | 40.5 lb | 74.6 lb | 104.1 lb |
| Uvavanyo loxinzelelo (i-PSI) | 2,207 | 3,138 | 3,958 |
| Indawo yokugeleza kwamanzi (kwi-²) | 71.8 | 64.5 | 56.7 |
Itheyibhile ibonisa iingenelo kunye neengxaki zale meko. IShedyuli 160 iphatha uxinzelelo olungaphezulu ngama-26% kuneShedyuli 120, kodwa ubunzima bayo buyanda ngama-39% kwaye indawo yayo yokuhamba iyancipha nge-12%. Ukuncipha kokuhamba kwamanzi kubangela ukunyuka kweemfuno zentloko yepompo kunye neendleko zokusebenza eziphezulu kulo lonke ixesha lobomi benkqubo. IShedyuli 120 ibonelela ngomgangatho ophakathi: amandla oxinzelelo angaphezu kwama-42% kuneSch 80, kunye nobunzima obuncinci kunye nokunciphisa ukuhamba kwamanzi kuneSch 160.
Ixesha lokuchaza ishedyuli nganye:
- Shedyuli 80: Imibhobho eqhelekileyo yemizi-mveliso, uxinzelelo oluphantsi ukuya koluphakathi, ifumaneka kwisitokhwe.
- Shedyuli 120: Imigca yenkqubo yoxinzelelo oluphezulu, iinkqubo zebhoyila, kunye nokusetyenziswa okubalulekileyo apho iSch 80 ingonelanga kodwa iSch 160 igqithisile. Ihlala yenziwe ngokwe-odolo.
- Shedyuli 160: Inkonzo yoxinzelelo olugqithisileyo, ii-hydraulics ezibalulekileyo zoxinzelelo oluphezulu, kunye neenkqubo zodonga olunzima ezigunyazisiweyo ngekhowudi. Ixabiso eliphezulu kunye nobunzima.
Imibuzo Ebuzwa Rhoqo Malunga neShedyuli ye-120 Pipe
Usetyenziselwa ntoni umbhobho weShedyuli 120?
Umbhobho weShedyuli 120 usebenza ngezicelo ezintandathu ezithile, eziquka imigca yomphunga enoxinzelelo oluphezulu kunye neenkqubo zamanzi okusela ebhoyila kunye nemibhobho yenkqubo yeekhemikhali, imigca yokuqokelela ioyile negesi, kunye nezicelo ezibalulekileyo zoshishino ezifuna ngaphezulu kwepayipi yeShedyuli 80 enokusingatha imisebenzi yoxinzelelo. Umbhobho usebenza njengokhetho oluphakathi oluphakathi olukhoyo phakathi kweShedyuli 80 kunye neShedyuli 160.
Bungakanani ubukhulu bodonga lombhobho weShedyuli 120?
Ubukhulu bodonga lwepayipi yeshedyuli ye-120 buxhomekeke kubukhulu obuqhelekileyo. Umbhobho we-NPS 6″ unobukhulu bodonga obuzii-intshi eziyi-0.562. Umbhobho we-NPS 8″ unobukhulu bodonga obuzii-intshi eziyi-0.719. Umbhobho we-NPS 10″ unobukhulu bodonga obuzii-intshi eziyi-0.844. Umbhobho we-NPS 12″ unobukhulu bodonga obuzii-intshi eziyi-1.000. Itheyibhile ye-ASME B36.10M ibonelela ngamaxabiso achanekileyo ekufuneka ajongwe ukuze kulinganiswe ngokuthe ngqo.
Ingakanani inqanaba loxinzelelo lombhobho weShedyuli 120?
Umbhobho wentsimbi yekhabhoni ongama-intshi ayi-8 we-Schedule 120, ohlangabezana nemigangatho ye-ASTM A53 Grade B, unokumelana noxinzelelo lwe-PSI oluyi-3,335 kubushushu begumbi. Umbhobho we-intshi ezili-10 unokumelana nomlinganiselo we-PSI omalunga ne-3,138. Amanqaku ayancipha xa amaqondo obushushu enyuka kwaye ulwakhiwo oludibeneyo lubonisa amanqaku aphantsi ngenxa yezizathu zokusebenza kakuhle kwamalungu.
Ngaba iShedyuli 120 inamandla kuneShedyuli 80?
Uthelekiso phakathi kweShedyuli 120 kunye neShedyuli 80 lubonisa ukuba iShedyuli 120 inika amandla angcono. IShedyuli 120 ibonakalisa ubukhulu obungama-30 ukuya kuma-50 ekhulwini kuneShedyuli 80 kuluhlu lwayo lwe-NPS ngelixa ibonisa ukumelana okungcono koxinzelelo ngama-30 ukuya kuma-50 ekhulwini. Kwi-NPS 8″, iSch 120 inomthamo woxinzelelo ongama-44% ngaphezu kweSch 80.
Ingakanani imilinganiselo efumaneka kwipayipi yeShedyuli 120?
I-ASME B36.10M ichaza iShedyuli 120 kwi-NPS 6″ ukuya kwi-24″ kunye nobukhulu obukhulu. Obona bukhulu buqhelekileyo obuveliswayo nobugciniweyo yi-NPS 6″, 8″, 10″, kunye ne-12″. Uyilo lweShedyuli eSisiseko 120 lusebenza kuphela kubungakanani obungaphezulu kwe-NPS 6″.
isiphelo
Ukhetho olusebenzayo olunodonga olunzima phakathi kweShedyuli 80 kunye neShedyuli 160 ludlula iimfuno. Le mveliso inika uphuculo loxinzelelo lwe-30 ukuya kwi-50 ekhulwini xa ithelekiswa neShedyuli 80 kodwa ifuna ubunzima obuncinci kunye neendleko ezincinci kwaye inika amandla okuhamba ngcono kuneShedyuli 160. Le nkqubo isebenza ngokufanelekileyo phakathi kwe-30 kunye ne-100 ekhulwini lomthamo wayo ophezulu, nto leyo eyenza ukuba ifaneleke kwiindlela zoxinzelelo oluphezulu lomphunga kunye neekhemikhali kunye nemisebenzi yeoyile negesi ebalulekileyo.
Kufuneka uqinisekise imeko yesitokhwe ngaphambi kokuba usebenzise iShedyuli 120 njengengcaciso. Abasasazi bengingqi abayigcini le mveliso kwisitokhwe kuzo zonke iindawo ezahlula kwiSch 40 kunye neSch 80. Iimveliso ezenziwe ngokwenziwa ngokwezifiso zihlala zifuna iiveki ezi-4 ukuya kwezi-8 ukuze zihanjiswe. Kufuneka ubeke ixesha lakho lokuthenga ngokusekelwe kwiimfuno zakho zangoku.
Sebenzisa i-ultrasonic gauge ukulinganisa ubukhulu bodonga xa uhambisa uze uqinisekise imilinganiselo yakho ngokuthelekisa nesatifikethi sovavanyo lwe-mill. Ukunyamezelana kwe-ASTM -12.5% kusebenza kuzo zonke iishedyuli, kuquka ne-Sch 120. Uluhlu lokunyamezelana kweempazamo luba lubalulekile kwimisebenzi yemibhobho enoxinzelelo oluphezulu.
