Mfundo zazikuluzikulu za kapangidwe ka vavu ya cryogenic!

Mavavu a cryogenic amagwiritsidwa ntchito kwambiri m'minda ya feteleza, LNG ndi mafakitale a petrochemical. Kupatulapo nayitrogeni yamadzimadzi ndi mpweya wina wa inert wamadzimadzi, ma TV ambiri omwe amawongoleredwa sizongoyaka komanso kuphulika, komanso gasification imachitika ikatenthedwa kapena kuwunikira. , Zomwe zimapangitsa kuti voliyumu ichuluke mofulumira, zosavuta kuyambitsa kutulutsa ndi kuphulika. M'makampani, ma valve omwe amagwiritsidwa ntchito kutentha kwapakati pansi -40 ℃ nthawi zambiri amatchedwa ma valve cryogenic, ndipo ma valve omwe amagwiritsidwa ntchito pa kutentha kwapakati pansi -101 ℃ amatchedwa ma valve otsika kwambiri.

Kusankha kwazinthu zamavavu a cryogenic:

The makina katundu zitsulo pa kutentha otsika ndi osiyana ndi kutentha firiji. Kuphatikiza pa mphamvu, kulimba kwamphamvu kwapang'onopang'ono ndikofunikira kwambiri pazitsulo zotsika kutentha. Kutentha kwapang'onopang'ono kwamphamvu kwazinthu kumakhudzana ndi kutentha kwamphamvu kwazinthuzo. Kutsika kwa kutentha kwa zinthuzo kumapangitsa kuti zinthu zikhale bwino. Zipangizo zachitsulo zokhala ndi ma cubic lattice okhazikika pathupi monga chitsulo cha kaboni zimakhala ndi kuzizira kozizira pang'ono, pomwe zida zachitsulo zokhala ndi ma cubic lattice ngati chitsulo chosapanga dzimbiri cha austenitic sizikhudza kulimba kwa kutentha kocheperako.

Thupi la valve yotsika kutentha, boneti ndi ziwalo zina zosagwira ntchito nthawi zambiri zimapangidwa ndi zinthu zokhala ndi mphamvu zotsika komanso zolimba. Nthawi yomweyo, zinthu monga weldability, machinability, bata ndi chuma ziyenera kuganiziridwanso.

Popanga, milingo itatu yotsika kutentha ya -46 ℃, -101 ℃ ndi -196 ℃ imagwiritsidwa ntchito. Chitsulo cha carbon chotsika kwambiri chimagwiritsidwa ntchito pa -46 ℃ kalasi yotsika kutentha, ndipo 300 mndandanda wa austenitic zitsulo zosapanga dzimbiri zimagwiritsidwa ntchito pa -101 ℃ ndi -196 ℃ kalasi yotsika kutentha. Chitsulo chosapanga dzimbirichi chimakhala ndi mphamvu zolimbitsa thupi, kulimba kwabwino komanso magwiridwe antchito abwino.