1. Khetha ivalve yenkonzo ye-cryogenic
Ukukhetha ivalve kwizicelo ze-cryogenic kunokuba nzima kakhulu. Abathengi kufuneka baqwalasele iimeko ebhodini nakwifektri. Ngaphezu koko, iipropathi ezithile ze-cryogenic fluids zifuna ukusebenza kwevalve ethile. Ukukhetha okufanelekileyo kuqinisekisa ukuthembeka kwezityalo, ukukhuselwa kwezixhobo, kunye nokusebenza ngokukhuselekileyo. Imakethi yehlabathi ye-LNG isebenzisa iziyilo ezimbini eziphambili zevalvu.
Umsebenzisi kufuneka anciphise ubungakanani ukugcina itanki yegesi yendalo incinci kangangoko. Oku bakwenza nge-LNG (igesi yendalo engamanzi, irhasi yendalo enyibilikisiweyo). Ngokupholisa malunga nerhasi yendalo iba lulwelo. -165 ° C. Kweli qondo lobushushu, ivalve engundoqo yokuzahlula kufuneka isasebenza
2. Yintoni echaphazela uyilo lwevalvu?
Ubushushu bunempembelelo ebalulekileyo kuyilo lwevalve. Umzekelo, abasebenzisi banokuyidinga kwiindawo ezidumileyo ezinje ngoMbindi Mpuma. Okanye, inokulungela iindawo ezibandayo ezinje ngeelwandle ezimhlophe. Zombini iimeko ezingqongileyo zinokuchaphazela ukuqina kunye nokuqina kwevalve. Amalungu ezi valves abandakanya umzimba wevalve, ibhonethi, isiqu, i-stem seal, ivalve yebhola kunye nesitulo sevalvu. Ngenxa yokwakheka kwezinto ezahlukeneyo, la macandelo ayanda kwaye ankontileka kumaqondo obushushu ahlukeneyo.
Iinketho zesicelo seCryogenic
Ukhetho 1:
Abaqhubi basebenzisa iivalvu kwiindawo ezibandayo, ezifana nezixhobo zokulawula ioyile kwiilwandle ezimhlophe.
Ukhetho 2:
Abaqhubi basebenzisa iivalvu ukulawula ulwelo olungaphantsi kakhulu komkhenkce.
Kwimeko yeegesi ezinokutsha kakhulu, ezifana negesi yendalo okanye i-oxygen, i-valve kufuneka isebenze ngokuchanekileyo xa kwenzeka umlilo.
3.Uxinzelelo
Kukho ukwakhiwa koxinzelelo ngexesha lokuphathwa ngokuqhelekileyo kwefriji. Oku kungenxa yokwanda kobushushu bemo engqongileyo kunye nokwakheka komphunga okulandelayo. Inkathalo ekhethekileyo kufuneka ithathwe xa kuyilwa ivalve / inkqubo yombhobho. Oku kuvumela uxinzelelo ukuba lwakheke.
4.Ubushushu
Ukutshintsha kobushushu obukhawulezayo kunokuchaphazela ukhuseleko lwabasebenzi kunye neefektri. Ngenxa yokubunjwa kwezinto ezahlukeneyo kunye nobude bexesha abaphantsi kwefriji, inxalenye nganye ye-valve ye-cryogenic yandisa kwaye inkontileka kwimilinganiselo eyahlukeneyo.
Enye ingxaki enkulu xa uphatha iifriji kukunyuka kobushushu obuvela kwindawo engqongileyo. Oku kwanda kobushushu yinto ebangela ukuba abavelisi bahlukanise iivalvu kunye nemibhobho
Ukongeza kwiqondo lokushisa eliphezulu, i-valve kufuneka ihlangabezane nemingeni enzima. Kwi-helium enyibilikisiweyo, ubushushu berhasi enyibilikisiweyo buyehla ukuya kuma-270 ° C.
5.Umsebenzi
Kwelinye icala, ukuba iqondo lobushushu liyehla liye ku-zero ngokupheleleyo, umsebenzi wevalvu uba ngumngeni omkhulu. Iivalve ze-Cryogenic zidibanisa iipayipi kunye neegesi ezimanzi kwindawo. Ikwenza oku kubushushu be-ambient. Isiphumo sinokuba ngumahluko wobushushu ukuya kuthi ga kwi-300 ° C phakathi kombhobho kunye nokusingqongileyo.
6.Ukuphumelela
Umahluko weqondo lokushisa udala ukuhamba kobushushu ukusuka kwindawo efudumeleyo ukuya kwindawo ebandayo. Iya kuwonakalisa umsebenzi oqhelekileyo wevalve. Kwakhona kunciphisa ukusebenza kakuhle kwenkqubo kwiimeko ezinzima. Oku kuxhalabisa ngokukodwa ukuba umkhenkce uyabumba ekupheleni okufudumeleyo.
Nangona kunjalo, kwizicelo zobushushu obuphantsi, le nkqubo yokufudumeza i-passive nayo yenziwe ngabom. Le nkqubo isetyenziselwa ukutywina i-valve stem. Ngokuqhelekileyo, isiqu sevalve sivalwa ngeplastiki. Ezi zixhobo azikwazi ukumelana namaqondo okushisa aphantsi, kodwa izitywina zetsimbi ezisebenza kakhulu zamacandelo amabini, ezihamba kakhulu kwicala elichaseneyo, zibiza kakhulu kwaye ziphantse zingenakwenzeka.
7.Ukutywinwa
Kukho isisombululo esilula kakhulu kule ngxaki! Uzisa iplastiki esetyenziselwa ukutywina isikhondo sevalvu kwindawo apho ubushushu buqhelekile. Oku kuthetha ukuba i-sealant yesiqu sevalve kufuneka igcinwe kumgama ukusuka kulwelo.
8.Ivalve yokwahlula kathathu ejikelezayo
Ezi zixhobo zivumela ivalve ukuba ivule kwaye ivale. Zine-friction encinci kunye ne-friction ngexesha lokusebenza. Ikwasebenzisa i-stem torque ukwenza ivalve iqine ngakumbi. Omnye wemiceli mngeni yogcino lwe-LNG yimingxuma evalelekileyo. Kule mingxunya, ulwelo lunokudumba ngokuqhushumba amaxesha angaphezu kwama-600. Ivalve yokwahlula yodwa ejikeleza kathathu iyawuphelisa lo mngeni.
9.Single kwaye kabini baffle check valves
Ezi zivalo ziyinxalenye ephambili kwisixhobo sokunyibilikisa ngenxa yokuba zithintela umonakalo obangelwa kukubuyela umva. Izinto eziphathekayo kunye nobukhulu zizinto ezibalulekileyo zokuqwalaselwa kuba iivalve ze-cryogenic zibiza. Iziphumo zeevalvu ezingachanekanga zinokuba yingozi.
Iinjineli ziqinisekisa njani ukuqina kweevalvu ze-cryogenic?
Ukuvuza kubiza kakhulu xa ubani eqwalasela iindleko zokuqala ukwenza igesi ibe yifriji. Ikwayingozi.
Ingxaki enkulu ngetekhnoloji ye-cryogenic kukukwazi ukuvuza kwesitulo sevalvu. Abathengi bahlala bejongela phantsi ukukhula kwe-radial kunye nomgca wesikhondo ngokunxulumene nomzimba. Ukuba abathengi bakhetha i-valve efanelekileyo, banokuphepha ezi ngxaki zingentla.
Inkampani yethu incoma ukusebenzisa iivalve zobushushu obuphantsi ezenziwe ngentsimbi engenasici. Ngethuba lokusebenza kunye negesi e-liquefied, izinto eziphathekayo ziphendula kakuhle kwi-gradients lokushisa. Iivalve ze-Cryogenic kufuneka zisebenzise izinto ezifanelekileyo zokutywina ezinobunzima obufikelela kwi-100 bar. Ukongeza, ukwandisa ibhonethi luphawu olubaluleke kakhulu kuba lumisela ukuqina kwe-stem sealant.
Ixesha lokuposa: May-13-2020