Udidi lweMveliso
Indlela yokuvavanya ukuvela kweDewar
Umhla: nge-17 kaJuni 2020
Ukungaphumeleli kwe-vacuum ye-Dewar yinto enqabileyo. Ngokuqhelekileyo inkqubo yokucoca i-cylinder yegesi inokugcinwa iminyaka emininzi, apho i-vacuum ye-cylinder yegesi ihamba ngokuthe ngcembe (ngesantya esicothayo kakhulu) iyancipha ngokuthe ngcembe. Ukuba iplagi yokufunxa ye-cylinder yegesi ayiqhelekanga, kodwa ivacuum ikrokrelwa ukuba ayisebenzi, i-dewar kufuneka ivavanyelwe izinga lokuphuma kwamanzi (NER), kwaye iziphumo zovavanyo zithelekiswa nexabiso lezinga lokuphuma kwamanzi kwitheyibhile yenkcazo yemveliso.
1. Okokuqala, gcwalisa i-cylinder nge-nitrogen ye-liquid, umgangatho wokuzalisa kufuneka ube ngu-1\/2 ukuya kwi-2\/3 yomgangatho wokuzaliswa okupheleleyo;
2. Vala iivalvu zokungena neziphumayo zeisitya soxinzelelo, ivalve ye-booster, ivalve yokusebenzisa igesi, kwaye uvule ivalve yokukhupha ukukhupha igesi;
3. Shiya i-cylinder yegesi iiyure ezingama-24, uze ulinganise ngokuchanekileyo isilinda segesi kwaye urekhode ubunzima, ixesha kunye nomhla;
4. Qhubeka ugcine iDewar ihleli iiyure ezingama-48, emva koko ulinganise ngokuchanekileyo isilinda segesi kwakhona, kwaye urekhode ubunzima besibini, ixesha kunye nomhla;
Thelekisa isiphumo sovavanyo kunye nexabiso lezinga lokuphuphuma kwamanzi kwitheyibhile echaza imveliso. Ixabiso lesantya somphunga wombhobho omtsha onexabiso lobushushu obungaphantsi kwesibini liqhelekileyo, kwaye nasiphi na isiphumo sovavanyo esingaphezulu kwesibini sibonisa ukuba i-vacuum ye-interlayer ilahlekile okanye ilahlekile. Nceda ubuyisele inqanawa entsha yoxinzelelo okanye ulungise iDewar ngexesha.
Kufuneka kuqatshelwe ukuba ukuzaliswa kokuqala kweebhotile ezishushu okanye ukugcwalisa ngaphezuluiisilinda zegesikunokubangela ukuba izinga lokuphuma kwamanzi libe ngumphunga ngokugqithisileyo. Uxinzelelo lwe-liner yebhotile ene-interlayer vacuum elahlekileyo iya kunyuka ngokukhawuleza. Ukutshintsha kolu xinzelelo kucace gca.
Ubushushu beqokobhe langaphandle lomkhumbi woxinzelelo, ngakumbi apho umbhobho ugxininiswe kwaye kufuphi nenkxaso ungaphantsi kobushushu bezinye iindawo. Iqabaka okanye "ukubila" kweqokobhe langaphandle kuxhomekeke kwiqondo lobushushu kunye nokufuma kwendawo engqongileyo. Ubukho balo mcimbi we-condensation abukwazi ukusetyenziswa njengesalathisi esithembekileyo sokugweba ubukho be-cylinder vacuum, kwaye uvavanyo lwezinga lokunyuka kwe-evaporation yemihla ngemihla yindlela ethembekileyo nesebenzayo yokugweba.
1. Okokuqala, gcwalisa i-cylinder nge-nitrogen ye-liquid, umgangatho wokuzalisa kufuneka ube ngu-1\/2 ukuya kwi-2\/3 yomgangatho wokuzaliswa okupheleleyo;
2. Vala iivalvu zokungena neziphumayo zeisitya soxinzelelo, ivalve ye-booster, ivalve yokusebenzisa igesi, kwaye uvule ivalve yokukhupha ukukhupha igesi;
3. Shiya i-cylinder yegesi iiyure ezingama-24, uze ulinganise ngokuchanekileyo isilinda segesi kwaye urekhode ubunzima, ixesha kunye nomhla;
4. Qhubeka ugcine iDewar ihleli iiyure ezingama-48, emva koko ulinganise ngokuchanekileyo isilinda segesi kwakhona, kwaye urekhode ubunzima besibini, ixesha kunye nomhla;
Kufuneka kuqatshelwe ukuba ukuzaliswa kokuqala kweebhotile ezishushu okanye ukugcwalisa ngaphezuluiisilinda zegesikunokubangela ukuba izinga lokuphuma kwamanzi libe ngumphunga ngokugqithisileyo. Uxinzelelo lwe-liner yebhotile ene-interlayer vacuum elahlekileyo iya kunyuka ngokukhawuleza. Ukutshintsha kolu xinzelelo kucace gca.
Ubushushu beqokobhe langaphandle lomkhumbi woxinzelelo, ngakumbi apho umbhobho ugxininiswe kwaye kufuphi nenkxaso ungaphantsi kobushushu bezinye iindawo. Iqabaka okanye "ukubila" kweqokobhe langaphandle kuxhomekeke kwiqondo lobushushu kunye nokufuma kwendawo engqongileyo. Ubukho balo mcimbi we-condensation abukwazi ukusetyenziswa njengesalathisi esithembekileyo sokugweba ubukho be-cylinder vacuum, kwaye uvavanyo lwezinga lokunyuka kwe-evaporation yemihla ngemihla yindlela ethembekileyo nesebenzayo yokugweba.
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