ICandelo leMveliso
Ubuninzi bokugcwalisa itanki yokugcina i-LNG
Umhla: Feb 07, 2020
Isithuba esithile kufuneka sigcinelwe iItanki yokugcina i-LNG Itankiyegesi ye-cilyogesic irhasi yotywala esetyenziswayo njengendawo yokufumana ulwandiso lwe-thermal, kwaye itanki aliyi kuzaliswa. Ubungakanani be-crygenic bule inxulumene neempawu eziphakathi kunye noxinzelelo lwenziwe umsebenzi. Elona nani liphezulu lokugcwalisa itanki yokugcina i-LNG linxulumene ngokusondeleyo nokugcinwa ngokukhuselekileyo.
Ukuqwalaselwa kukuba ivolumu yolwelo olushushu iya kwandisa, enokubangela ukuba inqanaba lolwelo liphezulu kakhulu, kwaye inqanaba lolwelo liphezulu kakhulu ukubangela i-lng chillage, kufuneka igcinwe isithuba esithile. Isithuba esingakanani kufuneka sigcinelwe indawo kufuneka simiselwe ngoxinzelelo lwe-valve yoKhuseleko lweTank kunye nemeko ye-LNG ngexesha lokugcwalisa.
Ukuba uxinzelelo oluvumelekileyo lokusebenza lwetanki yokugcina i-LNG yi-0.48MPA kunye noxinzelelo lokuzalisa yi-0.14MPA, ivolumu yokugcwalisa i-tink yogcino lwe-LNG yi-94.3% yetawuli esebenzayo yetanki.
Isixa se-LNG siza ikakhulu silawulwa linqanaba lolwelo kwitanki le-LNG Cryic. Isalathisi senqanaba elinamanzi asekwe kwitanki ye-LNG li "iliso" ukuze ligcine inqanaba lolwelo ngaphakathi kwitanki, elibaluleke kakhulu kukhuseleko lwetanki. Itanki yokugcina i-LNG iya kuxhotyiswa ngeeseti ezimbini zezixhobo zokulinganisa ezizimeleyo. Impembelelo yotshintsho lwexesha lokuxinana kwinqanaba lolwelo kufuneka luthathelwe ingqalelo xa ukhetha isixhobo sokulinganisa. Ukutshintshwa kwenqanaba legeji kuya kwenziwa ngaphandle kokuchaphazela ukusebenza kwesiqhelo kweitanki, ukuze kuqinisekiswe ukuba inqanaba kwitanki linokufunyanwa nangaliphi na ixesha.
Ukongeza kwisixhobo sokulinganisa inqanaba, itanki iya kufakwa i-alarm ephezulu, ukuze umqhubi anexesha elaneleyo lokuyeka ukuzalisa, ukuze kungabikho nqanaba lingaphezulu kwinqanaba eliphezulu. Kuya kufakwa i-alamu apho umqhubi unokuliva.
Abavelisi beetanki zokugcina i-LNG bakhumbuza ngokukodwa ukuba iitanki zincinci (ngaphantsi kwe-265m3), zivunyelwe ukuba zixhobise ivalve yenqanaba le-wolter, elilawulwa ngesandla. Xa inqanaba lolwelo lifikelela kwiVenkile yenqanaba lovavanyo, ukutya kunqunyulwa ngesandla.
Ukuqwalaselwa kukuba ivolumu yolwelo olushushu iya kwandisa, enokubangela ukuba inqanaba lolwelo liphezulu kakhulu, kwaye inqanaba lolwelo liphezulu kakhulu ukubangela i-lng chillage, kufuneka igcinwe isithuba esithile. Isithuba esingakanani kufuneka sigcinelwe indawo kufuneka simiselwe ngoxinzelelo lwe-valve yoKhuseleko lweTank kunye nemeko ye-LNG ngexesha lokugcwalisa.
Ukuba uxinzelelo oluvumelekileyo lokusebenza lwetanki yokugcina i-LNG yi-0.48MPA kunye noxinzelelo lokuzalisa yi-0.14MPA, ivolumu yokugcwalisa i-tink yogcino lwe-LNG yi-94.3% yetawuli esebenzayo yetanki.
Ukongeza kwisixhobo sokulinganisa inqanaba, itanki iya kufakwa i-alarm ephezulu, ukuze umqhubi anexesha elaneleyo lokuyeka ukuzalisa, ukuze kungabikho nqanaba lingaphezulu kwinqanaba eliphezulu. Kuya kufakwa i-alamu apho umqhubi unokuliva.
Abavelisi beetanki zokugcina i-LNG bakhumbuza ngokukodwa ukuba iitanki zincinci (ngaphantsi kwe-265m3), zivunyelwe ukuba zixhobise ivalve yenqanaba le-wolter, elilawulwa ngesandla. Xa inqanaba lolwelo lifikelela kwiVenkile yenqanaba lovavanyo, ukutya kunqunyulwa ngesandla.
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