M'dziko la cryogenics, kufunikira kwa kutentha kwabwino komanso kodalirika ndikofunikira, makamaka pankhani yonyamula zakumwa zoziziritsa kukhosi ngati helium yamadzimadzi.Mapaipi okhala ndi vacuum(VJP) ndiukadaulo wofunikira pakuchepetsa kutentha ndikuwonetsetsa kuti madzi a cryogenic monga helium yamadzimadzi amakhalabe pamalo otsika omwe amafunidwa panthawi yamayendedwe. Nkhaniyi ikufotokoza za ntchito yofunika kwambiri ya mapaipi okhala ndi vacuum mu ntchito zamadzimadzi za helium.

Kodi Vacuum Jacket Pipes ndi chiyani?

Mapaipi okhala ndi vacuum, omwe amadziwikanso kuti mapaipi otsekeredwa, ndi mapaipi apadera omwe amakhala ndi chosanjikiza cha vacuum pakati pa makoma a mapaipi awiri okhazikika. Vacuum wosanjikiza umenewu umagwira ntchito ngati chotchinga chothandiza kwambiri cha kutentha, kulepheretsa kutentha kupita kapena kuchoka mu chitoliro. Kwa helium yamadzimadzi, yomwe imawira pa kutentha kwa pafupifupi 4.2 Kelvin (-268.95 ° C), kusunga kutentha kotereku panthawi yodutsa n'kofunika kuti zisawonongeke komanso kutaya zinthu.

Kufunika kwa Mapaipi Ovundidwa ndi Jaketi mu Liquid Helium Systems

Helium yamadzimadzi imagwiritsidwa ntchito kwambiri m'mafakitale monga chisamaliro chaumoyo (makina a MRI), kafukufuku wasayansi (mu ma particle accelerators), ndi kufufuza malo (pazigawo zoziziritsa za spacecraft). Kunyamula helium yamadzimadzi kudutsa mitunda popanda kutentha kwambiri ndikofunikira kuti muchepetse zinyalala ndikuwonetsetsa kuti ntchitoyi ikuyenda bwino.Mapaipi okhala ndi vacuumamapangidwa kuti azisunga madziwo pa kutentha kwake kofunikira pochepetsa kwambiri kusinthana kwa kutentha.

Kuchepetsa Kutentha kwa Kutentha ndi Kutayika kwa Evaporation

Mmodzi mwa ubwino waukulu wavacuum jekete mapaipim'makina amadzimadzi a helium ndikuthekera kwawo kuteteza kulowetsa kutentha. Vacuum wosanjikiza amapereka pafupifupi chotchinga changwiro kwa magwero kutentha kunja, kuchepetsa kwambiri zithupsa ziwopsezo. Izi ndi zofunika kwambiri kuti madzi a helium asasunthike poyenda mtunda wautali. Popanda kugwiritsa ntchito vacuum insulation, helium imatha kusanduka nthunzi mwachangu, zomwe zimadzetsa kuwonongeka kwachuma komanso kusagwira ntchito bwino.

Kukhalitsa ndi Kusinthasintha

Mapaipi okhala ndi vacuumZomwe zimagwiritsidwa ntchito muzitsulo zamadzimadzi za helium zimapangidwira kuti zikhale zolimba, zomwe nthawi zambiri zimamangidwa ndi zitsulo zosapanga dzimbiri kapena zipangizo zina zomwe zimatha kupirira kutentha kwambiri komanso kupanikizika kwa makina. Mapaipiwa amabweranso m'mapangidwe osinthika, omwe amatha kuyika mosavuta pamakina omwe angafunike njira zokhotakhota kapena zosinthika. Kusinthasintha uku kumawapangitsa kukhala abwino pazomangamanga zovuta monga ma laboratories, matanki osungira ma cryogenic, ndi maukonde oyendera.

Mapeto

Mapaipi okhala ndi vacuumimagwira ntchito yofunika kwambiri pamayendedwe a helium yamadzimadzi, yopatsa mphamvu kwambiri yotchinjiriza yomwe imachepetsa kutentha ndikuchepetsa kutayika. Mwa kusunga umphumphu wa zakumwa za cryogenic, mapaipiwa amathandiza kusunga helium yamtengo wapatali komanso kuchepetsa ndalama zogwirira ntchito. Pamene mafakitale akupitiriza kupanga zatsopano komanso amafuna machitidwe apamwamba kwambiri a cryogenic, udindo wavacuum jekete mapaipizidzangokulirakulira. Ndi ntchito yawo yamafuta osayerekezeka komanso kulimba,vacuum jekete mapaipikukhalabe ukadaulo wofunikira pantchito ya cryogenics, makamaka pakugwiritsa ntchito helium yamadzimadzi.

Pomaliza,vacuum jekete mapaipi(VJP) ndizofunikira kwambiri pakugwiritsa ntchito helium yamadzimadzi, zomwe zimathandiza kuyenda bwino, kuchepetsa zinyalala, ndikuwonetsetsa chitetezo ndi kudalirika kwa machitidwe a cryogenic.

vacuum jacketed pipe:https://www.hlcryo.com/vacuum-insulated-pipe-series/