1. Khetha iValve yeNkonzo yeCryogenic
UkukhethaIvalvu yeCryogenicKwizicelo ze-cryogenic kunokuba nzima kakhulu. Abathengi kufuneka baqwalasele iimeko ezikwibhodi nakwifektri. Ngaphezu koko, iimpawu ezithile ze-cryogenic fluids zifuna ukusebenza kwevalvu ethile. Ukukhetha okufanelekileyo kuqinisekisa ukuthembeka kwesityalo, ukhuseleko lwezixhobo, kunye nokusebenza okukhuselekileyo. Imarike ye-LNG yehlabathi isebenzisa uyilo lweevalvu ezimbini eziphambili.
Umsebenzisi kufuneka anciphise ubungakanani ukuze ithangi legesi yendalo lihlale lincinci kangangoko. Bakwenza oku nge-LNG (igesi yendalo enyibilikisiweyo, igesi yendalo enyibilikisiweyo). Ngokuphola ukuya kuthi ga kwigesi yendalo ibe lulwelo. -165 ° C. Kobu bushushu, ivalvu yokwahlulahlula ephambili kufuneka isasebenza
2. Yintoni echaphazela uyilo lweCryogenic Valve
Ubushushu bunempembelelo ebalulekileyo kuyilo lwevalvu. Umzekelo, abasebenzisi banokuyifuna kwiindawo ezidumileyo ezifana neMbindi Mpuma. Okanye, ingafaneleka kwiindawo ezibandayo ezifana neelwandle ezikwi-polar. Zombini iindawo zinokuchaphazela ukuqina nokuqina kwevalvu. Izinto ezisetyenziswa kwezi valve ziquka umzimba wevalvu, ibhonethi, isiqu, isitywino sesiqu, ivalvu yebhola kunye nesihlalo sevalvu. Ngenxa yokwakheka kwezinto ezahlukeneyo, ezi ndawo ziyanda kwaye zinciphe kumaqondo obushushu ahlukeneyo。
2.1. Iindlela zokusetyenziswa kweCryogenic
• Abaqhubi basebenzisa iivalvu kwiindawo ezibandayo, njengee-oyile kwiilwandle ezisezantsi.
• Abaqhubi basebenzisa iivalvu ukulawula ulwelo olungaphantsi kakhulu kwengqele.
Kwimeko yeegesi ezitsha kakhulu, njengegesi yendalo okanye ioksijini, ivalvu kufuneka isebenze ngokuchanekileyo xa kutsha.
2.2. Uxinzelelo lweValve yeCryogenic
Kukho ukuqokelelana koxinzelelo ngexesha lokuphathwa kwefriji ngendlela eqhelekileyo. Oku kungenxa yobushushu obandayo bendawo kunye nokwenziwa komphunga okulandelayo. Kufuneka kuthathwe ingqwalasela ekhethekileyo xa kuqulunqwa inkqubo yevalvu/yemibhobho. Oku kuvumela ukuqokelelana koxinzelelo.
2.3. Ubushushu beValve yeCryogenic
Utshintsho olukhawulezileyo lobushushu lunokuchaphazela ukhuseleko lwabasebenzi kunye neefektri. Ngenxa yokwakheka kwezinto ezahlukeneyo kunye nobude bexesha ezifakwa kwifriji, icandelo ngalinye levalvu ye-cryogenic liyakhula kwaye linciphe ngamanani ahlukeneyo.
Enye ingxaki enkulu xa kusetyenziswa iifriji kukwanda kobushushu obuvela kwindawo engqongileyo. Oku kwanda kobushushu yikona okubangela ukuba abavelisi bahlukanise iivalvu kunye neepayipi.
Ukongeza kumanqanaba aphezulu obushushu, ivalvu kufuneka ihlangabezane nemingeni emikhulu. Kwi-helium enyibilikisiweyo, ubushushu begesi enyibilikisiweyo buyehla bufike kwi -270 ° C.
2.4. Umsebenzi weValve yeCryogenic
Ngokwahlukileyo koko, ukuba ubushushu buhla buye kwi-zero epheleleyo, umsebenzi wevalvu uba nzima kakhulu. Iivalvu ze-cryogenic zidibanisa imibhobho neegesi zolwelo kwindawo engqongileyo. Zikwenza oku kubushushu obuphakathi. Isiphumo sinokuba ngumahluko wobushushu ofikelela kwi-300 ° C phakathi kombhobho nendawo engqongileyo.
2.5. Ukusebenza kakuhle kweValve yeCryogenic
Umahluko wobushushu udala ukuhamba kobushushu ukusuka kwindawo efudumeleyo ukuya kwindawo ebandayo. Kuya konakalisa ukusebenza okuqhelekileyo kwevalvu. Kukwanciphisa ukusebenza kakuhle kwenkqubo kwiimeko ezigqithisileyo. Oku kubaluleke kakhulu ukuba umkhenkce uvela kwicala elifudumeleyo.
Nangona kunjalo, kwiindawo ezisebenzisa ubushushu obuphantsi, le nkqubo yokufudumeza engasebenziyo nayo yenziwa ngabom. Le nkqubo isetyenziselwa ukuvala isiqu sevalvu. Ngokwesiqhelo, isiqu sevalvu sivalwa ngeplastiki. Ezi zinto azikwazi ukumelana nobushushu obuphantsi, kodwa izitywino zesinyithi ezisebenza kakuhle zala macandelo mabini, ezihamba kakhulu kwicala elichaseneyo, zibiza kakhulu kwaye phantse azinakwenzeka.
2.6. Ukutywinwa kweValve yeCryogenic
Kukho isisombululo esilula kakhulu kule ngxaki! Uzisa iplastiki esetyenziselwa ukuvala isiqu sevalvu kwindawo apho ubushushu buqhelekileyo. Oku kuthetha ukuba isitywini sesiqu sevalvu kufuneka sigcinwe kude nolwelo.
2.7. Ivalvu yokuzihlukanisa ejikelezayo ene-tight tight ejikelezayo emithathu
Ezi zixhobo zokuvala zivumela ivalvu ukuba ivuleke kwaye ivale. Azinazo iingxabano ezininzi ngexesha lokusebenza. Ikwasebenzisa i-stem torque ukwenza ivalvu iqine ngakumbi. Enye yeengxaki zokugcina i-LNG yimingxunya ebambekileyo. Kule mingxunya, ulwelo lunokudumba kakhulu izihlandlo ezingaphezu kwama-600. Ivalvu yokuzihlukanisa ejikelezileyo kathathu iyawususa lo mceli mngeni.
2.8. Iivalvu zokujonga i-baffle enye nephindwe kabini
Ezi valve ziyinxalenye ebalulekileyo kwizixhobo zokunyibilikisa ulwelo kuba zithintela umonakalo obangelwa kukuhamba okungasemva. Izinto kunye nobukhulu zizinto ezibalulekileyo ekufuneka ziqwalaselwe kuba iivalvu ezibonisa ukurhawuzelelwa zibiza kakhulu. Iziphumo zeevalvu ezingalunganga zinokuba yingozi.
3. Iinjineli Ziqinisekisa Njani Ukuqina KweeValve ZeCryogenic
Ukuvuza kubiza kakhulu xa umntu ecinga ngexabiso lokuqala lokwenza igesi ibe yifriji. Kukwayingozi.
Ingxaki enkulu ngetekhnoloji ye-cryogenic kukuba kunokwenzeka ukuba isihlalo sevalvu sivuza. Abathengi badla ngokuyithatha kancinci i-radial kunye ne-linear growth yesiqu ngokunxulumene nomzimba. Ukuba abathengi bakhetha ivalvu efanelekileyo, banokuziphepha ezi ngxaki zingasentla.
Inkampani yethu icebisa ukusebenzisa iivalvu ezinobushushu obuphantsi ezenziwe ngentsimbi engagqwaliyo. Ngexesha lokusebenza ngegesi enyibilikisiweyo, izinto zisabela kakuhle kwii-gradients zobushushu.Iivalvu zeCryogenickufuneka basebenzise izixhobo zokutywina ezifanelekileyo ezinobunzima obufikelela kwi-100 bar. Ukongeza, ukolula ibhonethi luphawu olubaluleke kakhulu kuba lugqiba ubunzima be-stem sealant.
Ixesha lokuthumela: Meyi-13-2020