Izinto ezibalulekileyo kubathengi kunye neenjineli

Ukukhetha inkqubo yokwenziwa kwemibhobho yentsimbi efanelekileyo kubalulekile kwizakhiwo zaselwandle, kwiiprojekthi zokufaka iipali, ukwakhiwa kweelwandle, nakwezinye izicelo zobunjineli obunzima. Imibhobho yentsimbi ye-LSAW, imibhobho yentsimbi ye-SSAW, kunye nemibhobho yentsimbi engenamthungo zonke zisetyenziswa kakhulu kwiiprojekthi zoshishino, kodwa indlela nganye yokwenziwa inika iingenelo ezahlukeneyo ngokubhekiselele kububanzi bobubanzi, ubukhulu bodonga, ukusebenza kwesakhiwo, ukusebenza kakuhle kweendleko, kunye nokufaneleka kokusetyenziswa.

Iipayipi zentsimbi ezingenamthungo zenziwa ngaphandle komthungo odibeneyo kwaye zibonelela ngokumelana okugqwesileyo koxinzelelo, okwenza zifaneleke kwiinkqubo zoxinzelelo oluphezulu kunye nokusetyenziswa okukhethekileyo koomatshini. Iipayipi zentsimbi ze-SSAW zibonelela ngokuguquguquka okugqwesileyo kwimveliso enkulu yobubanzi kwaye zisetyenziswa kakhulu kwiipayipi, ukuhanjiswa kwamanzi, kunye neeprojekthi zeziseko zophuhliso ngokubanzi. Nangona kunjalo, kwizicelo ezifuna ubukhulu obukhulu bodonga, ulawulo oluqinileyo, kunye nokusebenza okuthembekileyo phantsi kweemeko zokulayisha eziguquguqukayo, iipayipi zentsimbi ze-LSAW zihlala zikhethwa ukuze zisetyenziswe kwiipilingi zaselwandle, izakhiwo zejakethi, kunye nokusetyenziswa kweetyhubhu ezinkulu zesakhiwo.

Iipayipi ze-JCOE LSAW, ezenziwe ngokwenziwa kweepleyiti, ukuwelda kwe-arc engaphantsi komhlaba okude, kunye neenkqubo zokwandiswa koomatshini, zibonelela ngeenzuzo kubuchule bobubanzi, ulawulo lobukhulu bodonga, ukuhlolwa kwe-weld, kunye nokuchaneka kokwenziwa. Ezi mpawu zizenza zibe sisisombululo esithandwayo kwiiprojekthi ezininzi zaselwandle, zaselwandle, kunye nezobunzima apho ukuthembeka kwexesha elide kunye nokufakelwa ngokuchanekileyo kubalulekile.

Intshayelelo: Kutheni Ukukhethwa Kwemibhobho Yentsimbi Kubalulekile Kubunjineli Obunzima

Ukususela kwizakhiwo ezingaphantsi kolwandle ukuya kwiziseko ezinzima zokwakha, umbhobho wentsimbi othwala umthwalo omkhulu uthwala zombini uxinzelelo lwesakhiwo kunye nomngcipheko weprojekthi. Ukukhetha uhlobo lombhobho olufanelekileyo kwasekuqaleni kulawula ngokuthe ngqo imveliso eyenziweyo, ukusebenza kakuhle kwentsimi, kunye neendleko zeprojekthi ezisezantsi.

Ukuze kulinganiswe ukusebenza neprojekthi iyonke ye-CAPEX, iingcali zobunjineli kunye nokuthengwa kwempahla zihlala zilinganisa iindlela ezintathu eziphambili zokwenza izinto ezinobukhulu obukhulu:

• I-LSAWumbhobho wentsimbi
• I-SSAWumbhobho wentsimbi
• Akukho mthungoumbhobho wentsimbi

Yonke inkqubo yokuvelisa ishiya uphawu olucacileyo kwindlela esebenza ngayo indalo.

Ngaba ufuna ukumelana noxinzelelo olungavuthwanga?Akukho mthungoUkhokela iklasi. Ngaba ufuna iidayamitha ezinkulu ngebhajethi elawulekayo?I-SSAWKodwa kwizicelo zesakhiwo ezinzima apho ubukhulu bodonga, ukuchaneka, kunye nokunyamezela ukudinwa kuthathwa njengeyona nto iphambili,I-LSAWuhlala ethatha indawo ephezulu.

Ukujonga ngaphaya kwexabiso leyunithi yokuqala kwezi ziseko zesakhiwo yinto eyahlula icebo lokuthenga eliphumelelayo kutshintsho olubizayo lwentsimi.

1. Inkqubo yoMveliso kunye neempawu zoBume

Umbhobho weNsimbi ongenamthungo: Ukusebenza koxinzelelo oluphezulu kwizicelo ezizodwa

Yenziwe nge-billet yentsimbi eqinileyo ngokusebenzisa i-hot-rolling okanye i-cold-drawing, umbhobho wentsimbi ongenamthungo unika ulwakhiwo olugqwesileyo ngaphandle kobuthathaka bomthungo we-weld.

Iingenelo eziphambili kunye nezicelo ziquka:

lUxinzelelo Olungenakuthelekiswa: Ilungele imigca ye-oyile negesi ebalulekileyo kunye nezixhobo ze-hydraulic ezinoxinzelelo oluphezulu.

lAmandla Afanayo: Iimpawu ezihambelanayo zoomatshini ezijikeleze umjikelo wonke.

Umngeni ngeeProjekthi ezinkulu zoLwakhiwo:

Nangona iipayipi ezingenamthungo zigqwesa kwiindawo ezinoxinzelelo oluphezulu, ukuvelisa iityhubhu ezingenamthungo ezinobubanzi obukhulu, ezinodonga olunzima kufuna ukucutshungulwa okuntsonkothileyo nokubiza kakhulu. Kwiziseko zophuhliso zaselwandle ezinkulu, ukufakwa kweepali zesiseko kude nolwandle, kunye nolwakhiwo lwentsimbi, ubuchwepheshe beepayipi ezidityanisiweyo bubonelela ngenye indlela engabizi kakhulu—ukubonelela ngobukhulu obuchanekileyo kunye nobukhulu bodonga ngaphandle kokuphazamiseka.

Umbhobho weNsimbi we-SSAW: Isisombululo esiSebenzayo kwiiprojekthi ezinkulu zobubanzi

Iipayipi zentsimbi ze-SSAW—ziveliswa ngokwenza ii-coil zentsimbi ezijijekileyo ezishushu kunye nokwenza ii-arc welds eziphantsi kwamanzi ezimacala mabini ecaleni komthungo we-helical.

Ngenxa yokuba indlela yokwenza i-spiral ivumela ukuba kwenziwe iipayipi ezinobubanzi obubanzi ngeekhoyili zentsimbi ezinciphileyo, iteknoloji ye-SSAW inika ubungakanani obugqwesileyo kunye nokusebenza kakuhle kwemveliso enomthamo omkhulu. Oku kwenza ukuba ibe lukhetho olungabizi kakhulu kwiiprojekthi zeziseko zophuhliso ezinkulu nezikude.

Izicelo eziphambili zepayipi ye-SSAW ziquka:

l Iintambo zokuhambisa amanzi ezikude

l Imigca yokukhupha amanzi aselwandle kunye nodaka

l Iziseko zophuhliso zeenkonzo zikamasipala

l Uxinzelelo oluphantsi ukuya koluphakathi kunye neziseko zesakhiwo

Nangona i-SSAW ikhanya kwisantya sokuvelisa kunye nobubanzi obukhulu, uphawu lwayo oluphambili yi-continuous spiral seam. Ngenxa yokuba ii-helical welds zinde kunee-straight longitudinal welds, zibonisa iipateni ezahlukeneyo zokusasazwa koxinzelelo ezifuna uphononongo lobunjineli olucokisekileyo kwiindawo zokulayisha ezidinwa kakhulu okanye eziguquguqukayo.

Xa iinkcukacha zeprojekthi zifuna ubukhulu bodonga obunzima kakhulu, ukunyamezelana okuncinci njengobukhulu, okanye ukumelana nomthwalo onzima ojikelezayo, iinjineli zihlala zitshintsha ukusuka kwi-SSAW ukuya kwizisombululo ze-LSAW (Longitudinal Submerged Arc Welded).

Umbhobho weNsimbi we-LSAW (JCOE): Isisombululo esikhethwayo kwizicelo ezinzima zesakhiwo

Imibhobho yentsimbi ye-LSAW (Longitudinal Submerged Arc Welded) yenziwe ngeepleyiti zentsimbi enye ezinzima kusetyenziswa indlela yokwenza i-JCOE cold-forming—apho ipleyiti ibunjwa ngokuthe ngcembe ibe yi-'J', 'C', kunye 'O' iprofayili ngaphambi kokuwelda i-arc engaphantsi kwamanzi enamacala amabini kunye nokwandiswa koomatshini obupheleleyo.

UmgangathoI-JCOEIndlela yokusebenza kweMveliso:

Ukuhlolwa kwePlati yeNsimbi → Ukuyilwa kweJCOE okuqhubekekayo → Ukwandiswa koomatshini obupheleleyo be-SAW ngaphakathi nangaphandle → I-NDT kunye nokuhlolwa kokugqibela

Xa kuthelekiswa nombhobho we-SSAW osekwe kwi-coil, inkqubo ye-JCOE esekelwe kwipleyiti ivumela ulawulo oluphezulu lwe-metallurgy, ulawulo oluchanekileyo lobukhulu bodonga, kunye nokusebenza kolwakhiwo okungenakuthelekiswa nanto.

Iingenelo eziphambili zobugcisa zeJCOE LSAW Pipe:

Ubukhulu Bodonga Obunzima Kakhulu: Ngokuxhomekeke kudidi lwentsimbi kunye neekhowudi zoyilo, iipayipi ze-JCOE LSAW zinokudlula ngokulula ubukhulu bodonga obuyi-50mm, nto leyo eyenza ukuba zibe lolona khetho lubalaseleyo kwiziseko zomoya zaselwandle, iijakethi zetyhubhu, kunye neenqwaba zezakhiwo ezithwala imithwalo enzima.

Umthungo weWeld oQondileyo oSinye: Ulwakhiwo lweweld olude lwenza lula kakhulu uvavanyo olungenakutshabalaliswa (NDT), lwenza kube lula ulawulo lokwenziwa kwevenkile, kwaye lukhawulezisa ukuwelda kwe-field girth ngexesha lokufakwa.

Ukwandiswa koomatshini kunye nokuchaneka: Inyathelo lokugqibela lokwandiswa koomatshini lisusa uxinzelelo lwangaphakathi ngelixa lizisa ukujikeleza okungaqhelekanga kunye nokuthe tye—into ebalulekileyo yokulungelelaniswa kwemibhobho engenamthungo kwiindawo zaselwandle ezikude nolwandle.

2. Uthelekiso lwePipe yeNtsimbi engenamthungo yeLSAW vs SSAW vs Seamless Steel

3. Kutheni i-LSAW ikhethwa kakhulu kwiiprojekthi zolwakhiwo oluphezulu nolunzima

Kwiiprojekthi zesakhiwo ezikude nolwandle nezinzima, ukukhethwa kwemibhobho yentsimbi kudla ngokusekwe kudibaniso lokusebenza kwesakhiwo, iimfuno zokufakelwa, kunye nokuthembeka komjikelo wobomi.

Iipayipi zentsimbi ze-LSAW zihlala zikhethwa ukuze zisetyenziswe ngendlela enzima kuba zibonelela ngeenzuzo ezininzi.

Amandla Odonga Olunzima Okulayisha Ngokutshintshatshintshayo

Izakhiwo zaselunxwemeni zichatshazelwa yimithwalo eqhubekayo yokusingqongileyo, kuquka intshukumo yamaza, amandla omoya, kunye noxinzelelo olujikelezayo.

Iipayipu kunye nezakhiwo zejakethi kufuneka zigcine ulungelelwaniso lwesakhiwo kangangeminyaka emininzi yenkonzo. Iipayipu ze-LSAW eziludongeni olunzima zibonelela ngamandla afunekayo kunye nokuqina kwezi ndawo zinzima.

Xa kuthelekiswa nokusetyenziswa kwemibhobho eqhelekileyo, izinto zokwakha ezikude nolwandle zihlala zifuna ulawulo olukhulu kubukhulu bodonga, umgangatho wezinto eziphathekayo, kunye neempawu zoomatshini.

Ukuchaneka Okuphuculweyo Kokwenziwa Kokufakelwa Kwangaphandle Kwelizwe

Ukufakelwa komoya ongaphandle kwelwandle kubandakanya iimfuno ezingqongqo zokulungelelanisa imibhobho, ukulungiswa kokuwelda, kunye nokuhlanganiswa kwentsimi.

Ukuchaneka kwesiphelo semibhobho kunye nokujikeleza kwayo kuchaphazela ngokuthe ngqo ukusebenza kakuhle kwe-welding ngexesha lokufakelwa. Inkqubo yokwandiswa koomatshini esetyenziselwa imibhobho ye-JCOE LSAW inceda ukuphucula ukuhambelana okulinganayo, ivumela ukulingana okungcono ngexesha lokwenziwa kunye nokwakhiwa kolwandle.

Kwabakhi be-EPC, oku kunokunciphisa ubunzima bokufakelwa kwaye kuphucule ukusebenza kakuhle kweprojekthi iyonke.

Imigangatho efanelekileyo kunye neemfuno zoMgangatho

Ngokuxhomekeke kwiimfuno zesicelo, imibhobho yentsimbi ye-LSAW inokunikezelwa ngokwemigangatho eyahlukeneyo yamazwe ngamazwe, kuquka:

• I-EN 10210 yamacandelo angenanto agqitywe shushu
• I-EN 10219 yamacandelo angenanto adibeneyo akhiwe ngendlela ebandayo
• I-API 5L yezicelo zemibhobho
• Iinkcukacha ze-ASTM
• Iimfuno eziphathelele iprojekthi ekude nolwandle

Kwiprojekthi zeziseko zophuhliso zaseYurophu kunye neeprojekthi zaselwandle, abathengi badla ngokufuna amaxwebhu asemgangathweni aneenkcukacha, kuquka:

• EN 10204 3.1 Izatifikethi zoVavanyo lweMill
• Ukuhlolwa komntu wesithathu ngokweemfuno zeprojekthi
• Uvavanyo lwe-Ultrasonic (UT)
• Iindlela ezongezelelweyo ze-NDT xa zichaziwe
• Uvavanyo lwempembelelo kwizicelo ezisebenzisa ubushushu obuphantsi

Iiklasi zentsimbi ezikhethwa rhoqo kwizicelo zesakhiwo ezifuna ukwenziwa ziquka uthotho lwe-S355 kunye ne-S460 ngokuxhomekeke kwiimfuno zoyilo.

4. Indlela Abathengi Abafanele Bayivavanye Ngayo Umthengisi Wemibhobho Yentsimbi ye-LSAW

Xa bethenga imibhobho yentsimbi ye-LSAW eludongeni olunzima, abathengi kufuneka bahlole okungaphezulu kunomthamo wemveliso kunye nexabiso.

Umthengisi othembekileyo kufuneka akwazi ukubonelela:

Ubuchule bokuvelisa

Qinisekisa ukuba umenzi unezixhobo ezifanelekileyo na:

• Uluhlu lobubanzi olufunekayo
• Ubukhulu bodonga obufunekayo
• Amanqanaba entsimbi afunekayo
• Ubungakanani beprojekthi enkulu

Inkqubo yoLawulo loMgangatho

Iinkqubo ezibalulekileyo zokuhlola ziquka:

• Ukuqinisekiswa kokwakheka kweekhemikhali
• Uvavanyo lwepropathi yoomatshini
• Ukuhlolwa kwe-weld
• Uvavanyo lobukhulu
• Uvavanyo lwe-hydrostatic xa kufuneka
• Uvavanyo olungatshabalalisiyo

Isiqinisekiso kunye namaxwebhu

Kwiiprojekthi zamazwe ngamazwe, abathengi kufuneka baqinisekise:

• Imigangatho esebenzayo
• Izatifikethi zokuhlola
• Inkqubo yokulandelela
• Ubuchule bokuhlola bomntu wesithathu

Kubathengi baseYurophu, inkxaso epheleleyo yamaxwebhu idla ngokubaluleka njengemveliso ebonakalayo.

Imibuzo Ebuzwa Rhoqo Malunga ne-LSAW, i-SSAW kunye nePipe yeNsimbi engenamthungo

Umbuzo 1:Yintoni umahluko omkhulu phakathi kwemibhobho yentsimbi ye-LSAW kunye ne-SSAW?

A1:Umahluko ophambili yindlela yokwakheka kwe-weld kunye nendlela yokuvelisa. Iipayipi ze-LSAW zenziwa ngeepleyiti zentsimbi ezine-weld ethe tye ende, ngelixa iipayipi ze-SSAW zenziwa ngee-coil zentsimbi ezine-weld ejikelezayo. I-LSAW idla ngokukhethwa kwizicelo zesakhiwo esinzima ezifuna ulawulo oluqinileyo kunye nobukhulu bodonga obunzima.

Umbuzo 2:Ngaba i-LSAW ingcono kune-SSAW xa kudityaniswa imibhobho?

A2:Zombini i-LSAW kunye ne-SSAW zingasetyenziselwa ukufakela izinto ngokweemfuno zeprojekthi. Nangona kunjalo, kwiziseko zaselwandle, izakhiwo zejakethi, kunye neeprojekthi ezibalulekileyo ekudinweni, i-LSAW ikhethwa rhoqo ngenxa yobuchule bayo bodonga olunzima, ulwakhiwo lwe-weld oluthe tye, kunye nokuchaneka kwayo kobukhulu.

Umbuzo 3:Ingaba imibhobho ye-JCOE LSAW inokufikelela kubungakanani bodonga?

A:3Iipayipi ze-JCOE LSAW zinokufikelela kubukhulu bodonga obungaphezulu kwe-50mm ngokuxhomekeke kububanzi bepayipi, umgangatho wentsimbi, kunye namandla omenzi.

Umbuzo 4:Yeyiphi imigangatho esetyenziswa rhoqo kwiipayipi zesakhiwo ze-LSAW?

A4:Ngokuxhomekeke kwisicelo, iipayipi ze-LSAW zinokuhambelana ne-EN 10210, EN 10219, API 5L, iinkcukacha ze-ASTM, okanye iimfuno ezithile zeprojekthi.

Isiphelo: Ukukhetha Umbhobho Ofanelekileyo Wokuthembeka Kweprojekthi Yexesha Elide

Ukukhetha phakathi kwe-LSAW, i-SSAW, kunye nombhobho wentsimbi ongenamthungo kufuna ukuqwalaselwa ngononophelo iimfuno zobunjineli, iimeko zokusebenza, kunye nemigangatho yeprojekthi.

Iipayipi ezingenamthungo zihlala zilukhetho oluhle kakhulu kwiizicelo zoxinzelelo oluphezulu. Iipayipi ze-SSAW zibonelela ngesisombululo esingabizi kakhulu kwiiprojekthi ezininzi zeziseko zophuhliso ezinobukhulu obukhulu. Nangona kunjalo, kwiiprojekthi zezakhiwo ezinzima, ukufakwa kweepali kude nolwandle, kunye neeprojekthi zobunjineli baselwandle ezifuna ubukhulu bodonga obunzima kunye nolawulo oluchanekileyo lokwenziwa, iipayipi zentsimbi ze-JCOE LSAW zihlala zisisombululo esithandwayo.

Ngenxa yetekhnoloji yokuvelisa ephucukileyo, ulawulo oluqinileyo lomgangatho, kunye nokuthobela imigangatho yamazwe ngamazwe, abathengisi beepayipi ze-LSAW abathembekileyo banokunceda abakhi be-EPC kunye nabanini beeprojekthi ukunciphisa iingozi kunye nokufezekisa ukusebenza kwesakhiwo ixesha elide.

Ngaba ufuna iinkcukacha zombhobho wentsimbi we-LSAW eludongeni olunzima kwiprojekthi yakho elandelayo yolwandle okanye yesakhiwo?IQELA le-YUANTAI DERUNukuze ufumane iinkcukacha ezineenkcukacha, amaxwebhu esiqinisekiso, kunye nenkxaso yeprojekthi.

Iinkcukacha ezikhoyo:

• Ububanzi: Ø406mm–1422mm
• Ubukhulu bodonga: Ukuya kuthi ga kwi-50mm+
• Amanqanaba entsimbi: S355 / S460
• Uhlolo: UT, NDT