Imilinganiselo emihlanu yokukhusela ubushushu obuphantsi betanki yokugcina ulwelo lwenitrogen

1. Ukukhethwa kwezinto eziphathekayo kwitanki yokugcina initrogen engamanzi. Kuye kwangqinwa ukuba amandla aphezulu e Isixhobo soxinzelelo lwesixhobo kukuba, kokukhona kunokwenzeka ukubola koxinzelelo. Nangona kunjalo, umda wamandla ophantsi ngaphandle kokubola koxinzelelo uhambelana nomxholo kunye neempawu zokungcola, ubungakanani boxinzelelo, isantya sokusebenza kunye nezinye izinto. Ukuze kuthintelwe i-corrosion yoxinzelelo lwetanki yokugcina ulwelo oluphantsi lobushushu be-nitrogen, olona khetho lufanelekileyo kufuneka lwenziwe phantsi koqwalaselo olubanzi loxinzelelo lokusebenza, uxinzelelo olushiyekileyo, ukhuseleko kunye noqoqosho Intsimbi enamandla aphantsi.

2. Jonga rhoqo ulwelo lwenitrogen yoxinaniso kunye nokufuma kwe-nitrogen engamanzi kwitanki yokugcina ubushushu obuphantsi. Ukuba isiqulatho samanzi singaphantsi kunoxinaniso olubalulekileyo, yongeza kwangethuba isiqulatho samanzi ukugcina ukufuma kweitanki yokugcina initrogen enobushushu obuphantsi kuluhlu lwe-012% - 1%.

3. Ulwakhiwo olufanelekileyo kunye nenkqubo yokuwelda iya kwamkelwa kwitanki yokugcina initrogen engamanzi. Ukugxininiswa koxinzelelo olubangelwa yi-welds eninzi kwaye igxininiswe kakhulu, i-welds asymmetric, i-welds enqamlekileyo kunye nolandelelwano lwe-welding olungenangqiqo luya kugwenywa kwisakhiwo. Ngexesha lokwenziwa kwetanki yokugcina i-nitrogen yolwelo lobushushu obuphantsi, ukuwelda okuqinileyo kuya kuthintelwa ukuthintela iziphene ezinje nge-undercut kunye nomphetho ogxadazayo, ukuze kuqinisekiswe umphezulu ogudileyo odibana nendawo ephakathi kangangoko kunokwenzeka.

Emva kokuvelisa, unyango lwe-annealing ubushushu kufuneka lwenziwe ukususa uxinzelelo lobushushu obushiyekileyo emva kwe-welding. I-PWHT echanekileyo inokunciphisa kakhulu uxinzelelo olushiyekileyo kwinkqubo yokuvelisa kunye nobunzima obuphezulu be-HAZ.4. Yentsha initrogen engamanzicitanki yokugcina ryogenicngaphambi kokusetyenziswa, umoya ongaphakathi uya kususwa ngokupheleleyo; kwinkqubo yokuzaliswa, ukukhutshwa kunye nokugcinwa, amanye amanyathelo aya kuthathwa ukuphepha ukuzisa nayiphi na umoya. Kwitanki enkulu yolwelo lwenitrogen yobushushu obuphantsi, umphunga we-ammonia uza kugqunywa ngokuqhubekayo, ngelixa irhasi engacondensable ubukhulu becala ingumoya, oya kukhutshelwa. Kwisixhobo esincinci, umoya ongaphakathi kwetanki yokugcina inayitrojeni elulwelo iya kususwa ngokutsalwa okanye ngokufuduswa. Ngegama nje, ukuphelisa ungcoliseko lomoya kwitanki yenitrogen engamanzi kunokuthintela ngokufanelekileyo ukubola koxinzelelo.

5. Kwitanki yokugcina i-nitrogen cryogenic esanda kusetyenziswa, uhlolo lwangaphakathi nangaphandle luya kwenziwa ngokwemigaqo kunye nokuhlolwa kwamaxesha athile kuya kwenziwa. Uhlolo oluphambili luya kuqhutyelwa kwi-interface yesigaba solwelo kunye negesi, indawo ebetha i-arc kunye neyokubetha, i-T-joint kunye nezinye iindawo ezidliwayo. Zonke i-welds ezingaphantsi kwinqanaba lolwelo ziya kuxhomekeka kwi-100% ye-particle magnetic okanye i-ultrasonic flaw kufunyaniswe. Ukuba iimeko zivuma, zonke iiwelds ziya kuba phantsi kwe-100% yokuchongwa kwesuntswana lemagnethi.