Indlela yokupholisa kwangaphambili kunye nezilumkiso zangaphambi kokupholisa iitanki zokugcina i-LNG

Okokuqala, ungayipholisa njani itanki yogcino lwe-LNG?
(1) Ukupholisa kwangaphambili ngeqondo lobushushu le-nitrogen. Jonga ukuthembeka kwe-hose engalayisha, kwaye akukho mvula, inkunkuma kunye nolunye ubugebenga kumbhobho. Qhagamshela i-hose kwitanki kwaye ujonge ukuba unxibelelwano lukhuselekile. Phakamisa uxinzelelo lwetanki, vula i-tanki, jonga unxibelelwano lwe-hose ukuze kuvuzwe. Ngokuthe chu Gcwalisa itanki yokugcina i-LNG nge-netrogen yerhasi ye-nitrogen. Xa uxinzelelo lwetanki logcino luvuka ukuya kwi-0.2MPA, vala ivalve yokulayisha yeSikhululo se-UN. Emva kokuba itanki yokugcina i-LNG iguqulelwa kangangemizuzu eli-15, ivule i-valve yenqanaba lesigaba segesi, ikhuphe i-nitrogen, kwaye iphakamise kwaye inciphise uxinzelelo. Khwela kuyo. Irhasi ikhutshiwe ngokulinganisa ivalve epheleleyo, kwaye iqondo lobushushu lilinganiswa yi-thermometer, ngaloo ndlela begweba ubushushu bangaphakathi kwetanki. Xa ifikelela kwixabiso elilindelekileyo, umsebenzi wokupholisa kwangaphambili ugqityiwe. (2) Ukupholisa kwangaphambili nge-nitrogen yolwelo. . Xa i-nitrogen yolwelo ipholile, irhasi ye-nitrogen ye-witrogen ifuneka ikhutshwe ngetyhubhu yesigaba segesi. Le gesi yeqondo lokushisa iphantsi inokuthi ipholelwe ngamanye amaxesha imibhobho yegesi exhunyiwe kwezinye iitanki, malunga nokugcina i-nitrogen yolwelo.

Okwesibini, unjani kwitanki yokugcina i-LNG nge-nitrogen yolwelo?
Ngexesha lokupholisa kwangaphambili kweItanki yokugcina i-LNGKwakuqala ukuphononongwa kwangaphambili nge-nitrogen yeqondo eliphantsi, kulandelwe ngokupholisa kwangaphambili nge-nitrogen yolwelo kusetyenziswa le nkqubo ilandelayo.
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. Lawula ukuvulwa kwe-dumper Voumper Valve, uvuleke kancinci ukuvulwa okuncinci ukugcina uxinzelelo kwi-0.3MPA. Xa uxinzelelo lwetanki luphakama ukuya kwi-0,2 ~ 0.3MPA, vala i-Ilve yokuGcina isikhululo seSitishi, vula i-ITA yeRhafu yeRhafu yeSigaba se-LNG ukunciphisa uxinzelelo, kwaye uphinde uqhubeke nokusebenza.
(3) Irhasi ikhutshwa ngokulinganisa ivalve epheleleyo. Xa iqondo lobushushu lifikelela kwixabiso elithile okanye isalathiso senqanaba elinamanzi sinemigangatho yenqanaba lolwelo, ngaphambili kunye ne-valve engasemva ivalve evalelweyo ivaliwe, kwaye ulwelo ludliwe nangalo xesha. Ngexesha lenkqubo ye-Inlet ye-Inlet, uxinzelelo lwetanki kufuneka lujongwe ngokusondeleyo kwaye lurekhodwe ukunqanda uxinzelelo ukusuka ekunyukeni; Xa uxinzelelo luphuma, ivalve esezantsi ivale ivaliwe ngexesha. Yiva ubushushu bomzimba wangaphandle wetanki ngesandla kwaye uqinisekise ukuba akukho ngxaki kwitanki.
(4) Xa inqanaba legeji yetanki yokugcina i-LNG ifikelela kwixabiso elithile, ulwelo luphelisiwe.
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. Emva kokuvala i-vamiper valve, ulwelo oluphakathi kwe-Valve kunye nevalve yokukhangela kufuneka ikhutshiwe.
. Xa umbhobho we-LNG Pipelipe ubuyela kubushushu obuqhelekileyo, vala ivalve ye-inlet yetanki elingaphezulu.
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3. Ngowuphi owona mxholo uphakamileyo wokhuseleko kunye noKhuseleko ekufuneka unikwe ingqalelo xa inkqubo yetanki ye-LNG ipholile?

Xa ipholisa kwangaphambili inkqubo yetanki ye-LNG, ezi zinto zisekukhuni zilandelayo ziya kuqatshelwa:
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(2) anikele ingqalelo ukujonga ukuba ngaba kukho ukuvuza konxibelelwano, kwaye abasebenzi abangadibananga nabo kufuneka baphume;
(3) anikele ingqalelo ukujonga uxinzelelo loxinzelelo lombhobho kunye netanki yokugcina;
(4) Nikela ingqalelo ukuba ingaba iqabaka emva kokujonga ivalve yokhuseleko.
Xa ipholisa kwangaphambili inkqubo yetanki ye-LNG, olu hlolo lulandelayo kufuneka luqatshelwe:
(1) Jonga izinto zobushushu eziphantsi zokuqhekeka kobushushu obuphantsi;
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(4) Jonga ukuqina kunye nokuguquguquka kwe-turygenic ivalve yokuqinisekisa ukuba iyaqhwa
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. Kwangelo xesha, utshintsho lomgangatho we-vacuum wetanki yogcino ngaphambi nasemva kokuphononongwa kwangaphambili kwetanki yokugcina ifunyenwe, kwaye ukusebenza kwetanki yokugcina kuphononongwa ngokupheleleyo.