Njengamandla ahlanzekile ekhwalithi ephezulu, asebenza kahle, futhi afanelekayo kanye nempahla eluhlaza yamakhemikhali, igesi yemvelo inamandla amakhulu okusebenza. Phakathi kwazo, i-liquefied natural gas (LNG), enezinga eliphezulu lokumaketha, nayo isiqalile ukuheha ukunakwa njengesengezo emithonjeni yegesi yendabuko.
Njengoba amapayipi e-LNG eyindlela evamile yokuthutha esezingeni eliphansi lokushisa, i-LNG ethuthwa ngamapayipi ngokuvamile isesimweni soketshezi esisezingeni eliphansi lokushisa. Uma ukushisa kwangaphandle kuhlasela, kuzoshintsha kalula, okubangela ukuthi ukugeleza koketshezi lwesigaba esisodwa kushintshe kube ukugeleza kwesigaba segesi-uketshezi okunezigaba ezimbili, noma ngisho nokukhiya kwegesi, okuholela ekwandeni kwengcindezi kanye nokwehla kwesilinganiso sokugeleza ezingxenyeni zamapayipi endawo, okuthinta kakhulu ukuthuthwa okuvamile kwe-LNG. Ngakho-ke, ukuhwamuka kwe-LNG kumele kulawulwe ngokuqinile. Kodwa-ke, ukuhwamuka kwepayipi le-LNG kungavimbela ukungena kokushisa kwangaphandle kanye nokuhwamuka kwe-LNG, futhi ukusebenza kwayo kuncike kakhulu kwikhwalithi yokuhwamuka kwepayipi le-LNG. Ngakho-ke, amapayipi e-LNG kumele asebenzise izindlela zokuhwamuka kokushisa , futhi ikhwalithi yawo ngeke ithinte kuphela ukusebenza kahle kokuthuthwa kwe-LNG, kodwa futhi ibe nomthelela obalulekile ekusebenzeni okuvamile kohlelo lonke.
Izinhlobo zokufakwa kwamapayipi e-LNG
I-vacuum insulation: Isimiso siwukwenza ukwakheka kwe-insulation kube i-interlayer evaliwe, futhi isikhala sangaphakathi sikhishwa siye ezingeni elithile le-vacuum ukunciphisa ukudluliswa kokushisa. Ohlelweni lwasekhaya lwe-LNG, lunesikhathi eside sokusebenzisa, umphumela osobala wokufakwa kwe-thermal kanye nokulahlekelwa kwamandla amancane. Kodwa-ke, ngenxa yentengo ephezulu kanye nesikhathi eside sokukhiqiza, isetshenziswa kakhulu kumaphrojekthi abalulekile futhi ayikwazi ukusetshenziswa ngezinga elikhulu.
Ukufakwa kwe-stacking: Ukufakwa kwe-stacking kuyindlela yendabuko yokufakelwa, okungukuthi, izinto zokufakelwa kwe-porous zifakwe ngaphandle kwepayipi, futhi ukufakwa kufinyelelwa ngoba amaseli agcwele umoya ovamile wokucindezela (noma amanye amagesi). Umphumela we-thermal insulation ungaphansi kancane kunalowo we-vacuum insulation, kodwa unesakhiwo esilula, intengo ephansi, nokusebenza okulula nokugcinwa. Njengamanje, amapayipi asekhaya e-LNG asebenzisa le ndlela kakhulu ukufakwa kwamapayipi.
Emakethe yamanje, izinto ezikhona ezibekiwe ezinqwabelene zisebenzisa i-polyurethane nezinto zengilazi eziyigwebu ngokuya ngamazinga okushisa e-LNG ahlukene. Uma kuqhathaniswa nezinto ezivamile zokufakwa ezishisayo ezifana ne-polyurethane nengilazi yegwebu, igwebu le-melamine linezinzuzo ezengeziwe. Igwebu le-melamine linobubanzi obubanzi bokumelana nesimo sezulu (kususe 196 degrees Celsius kuya ku-200 degrees Celsius), ligcina ukwakheka okuzinzile ngokomzimba namakhemikhali ngaphansi kwezimo zokushisa eziphakeme neziphansi, futhi linikeza ukuguquguquka okuhle kakhulu kwe-thermal (i-thermal conductivity coefficient, 0.032 W/ (m*K))) nokusebenza kokumuncwa komsindo (0.95NRC), lenze i-insulation ye-LNG engenasici, i-insulation yemvelo engafinyeleleki.
Ekwakhiweni kobunjiniyela beziteshi zezitshalo ze-LNG, isimo sangempela sephrojekthi kufanele sihlaziywe ngokuqondile, futhi kukhethwe futhi kusetshenziswe izinto ezisetshenziswayo ezishisayo ezishisayo nezibandayo. Okugqamile kwayo kuhlanganisa:
- Ukushisa okuncane okuphephile kokusetshenziswa kwezinto ezibandayo zokushisa kufanele kube ngaphansi kwezinga lokushisa elincane le-medium ngesikhathi sokusebenza okuvamile;
- Ukusebenza kokuvikela umlilo kwezinto ezibandayo zokushisa kufanele kuhlangabezane nezidingo zamazinga amanje kazwelonke;
- Beka kuqala ukusetshenziswa kwezinto ezibandayo zokushisa ezinokumelana okuhle kakhulu komphunga wamanzi ukuze kuqinisekiswe ukuzinza kwesikhathi eside kokusebenza kwempahla;
- Izinto ezibandayo zokufaka izinto ezibandayo kufanele zibe nokusebenza okuhle kokusika noma ukusika esizeni, ukwakhiwa okulula, kanye nobunzima bokufakwa esizeni okwenziwe lula;
- Beka kuqala izinto noma imikhiqizo enezinzuzo eziphezulu zezomnotho eziphelele;
- Yehlisa inani lomsebenzi wokulungisa wansuku zonke ngemva kokufakwa kwesistimu yokupholisa emkhiqizweni futhi uthuthukise ukusetshenziswa kabusha kwezinto.
Ngokusekelwe ezidingweni ezingenhla, i-melamine foam ingasetshenziswa njengento yokuvikela ukushisa kanye nezinto zokulondoloza ezibandayo zamapayipi e-LNG, kanti i-melamine foam idlala indima ebalulekile ekuvimbeleni ukushisa kanye nokulondolozwa okubandayo kwamapayipi e-LNG. I -Melamine foam iyinto yepulasitiki eguquguqukayo ye-elastomer enesakhiwo senethiwekhi esinezinhlangothi ezintathu. Isagcina isakhiwo esiphelele somzimba kanye nesamakhemikhali ku-minus 196 degrees Celsius, ngakho-ke isenomoya omuhle kakhulu wokushisa emazingeni okushisa aphansi futhi ivimbela ukujikeleza kwezindawo zangaphakathi nangaphandle. Ukuqhutshwa kokushisa kanye nokushisa ngemisebe, ukumelana okuhle kakhulu nomlilo (B1, UL94 V0 kanye ne-HL-1) kanye nezakhiwo zokuvikela (akukhiqizi noma yikuphi ukuqina kanye nokungaguquguquki), ukumelana ne-asidi kanye ne-alkali, ukumelana nokugqwala, ukumelana nokuguga, isisindo esincane kanye nokuguquguquka okuphansi kokushisa, njll., futhi ngenxa yokuthi i-melamine resin foam iyinto enwebekayo kodwa engeyona i-fiber, ayinawo uthuli, ayina-halogenated futhi ayina-hydrocarbon, ayinamalangabi futhi/noma ayinazo izinsimbi ezisindayo ezinobuthi, ifaneleka kakhulu ezindaweni ezinezidingo eziphezulu kakhulu ezinobungani nemvelo, indawo yokugcina ebandayo (isitshalo sokucubungula imithi, isitshalo sokucubungula ukulondolozwa kwezithelo nemifino, isitshalo sokucubungula ukudla, isitshalo sokucubungula inyama kanye nefektri yeziphuzo ezibandayo) ukufudumala okubandayo (ukufudumala kanye nokuvutha), ukufudumala okubandayo okufrijiwe/okuqandisiwe (ukufudumala kanye nokuvutha), ukufudumala okubandayo kwethangi lokugcina elimanzi le-LNG (ukufudumala kanye nokuvutha), imoto yokuthutha emanzi ye-LNG noma ukufudumala okubandayo kanye nokuvutha (ukufudumala kanye nokuvutha).
Ukuze uthole ulwazi olwengeziwe mayelana ne-SINOYQX Melamine Foam, sicela usithinte ku- [email protected] noma usithumelele izwi: +86-28-8411-1861.
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