Hauv ntiaj teb ntawm cryogenics, qhov xav tau kev rwb thaiv tsev thermal zoo thiab txhim khu kev qha yog qhov tseem ceeb, tshwj xeeb tshaj yog thaum nws los txog rau kev thauj mus los ntawm cov kua supercooled xws li kua helium.Cov kav dej nqus tsev(VJP) yog ib qho thev naus laus zis tseem ceeb hauv kev txo qis kev hloov pauv cua sov thiab xyuas kom meej tias cov kua cryogenic xws li kua helium tseem nyob rau qhov kub qis uas xav tau thaum lub sijhawm thauj mus los. Tsab xov xwm no tshawb nrhiav lub luag haujlwm tseem ceeb ntawm cov kav dej nqus tsev hauv cov ntawv thov kua helium.

Cov Kav Dej Nqus Tsev Uas Muaj Cov Khaub Ncaws Hnav Yog Dab Tsi?

Cov kav dej nqus tsev, tseem hu ua cov kav dej rwb thaiv tsev, yog cov kav dej tshwj xeeb uas muaj txheej rwb thaiv tsev ntawm ob phab ntsa yeeb nkab sib xyaw. Cov txheej rwb thaiv tsev no ua haujlwm ua lub zog tiv thaiv cua sov zoo heev, tiv thaiv kev hloov pauv cua sov mus rau lossis los ntawm cov ntsiab lus ntawm cov yeeb nkab. Rau cov kua helium, uas npau ntawm qhov kub ntawm kwv yees li 4.2 Kelvin (-268.95 ° C), kev tswj qhov kub qis thaum lub sijhawm thauj mus los yog qhov tseem ceeb kom tsis txhob muaj kev ua pa thiab poob ntawm cov khoom.

Qhov Tseem Ceeb ntawm Cov Kav Dej Nqus Tsev hauv Cov Tshuab Helium Ua Kua

Cov kua helium siv dav hauv kev lag luam xws li kev kho mob (rau cov tshuab MRI), kev tshawb fawb txog kev tshawb fawb (hauv cov khoom siv ua kom cov khoom me me), thiab kev tshawb nrhiav qhov chaw (rau kev txias cov khoom siv dav hlau). Kev thauj cov kua helium hla qhov deb yam tsis muaj qhov kub nce ntxiv yog qhov tseem ceeb rau kev txo cov khib nyiab thiab xyuas kom meej tias cov txheej txheem ua haujlwm tau zoo.Cov kav dej nqus tsevtau tsim los kom cov kua dej nyob rau ntawm nws qhov kub uas xav tau los ntawm kev txo qis kev sib pauv cua sov.

Txo Qhov Kub Nce thiab Kev Poob Dej

Ib qho ntawm cov txiaj ntsig tseem ceeb ntawmcov kav dej nqus tsev vacuumHauv cov txheej txheem helium kua yog lawv lub peev xwm los tiv thaiv cua sov nkag. Lub txheej nqus tsev muab qhov thaiv zoo meej rau cov chaw cua sov sab nraud, txo cov nqi boil-off. Qhov no yog qhov tseem ceeb rau kev tswj hwm lub xeev kua ntawm helium thaum lub sijhawm thauj mus los ntev. Yog tsis siv cov rwb thaiv tsev nqus tsev, helium yuav sai sai evaporate, ua rau ob qho tib si kev poob nyiaj txiag thiab kev ua haujlwm tsis zoo.

Kev ruaj khov thiab kev ywj pheej

Cov kav dej nqus tsevsiv rau hauv cov kua helium systems yog tsim los rau kev ruaj khov, feem ntau ua los ntawm stainless hlau lossis lwm yam khoom siv uas tuaj yeem tiv taus qhov kub thiab txias heev thiab kev ntxhov siab ntawm lub tshuab. Cov kav dej no kuj tuaj yeem tsim tau yooj yim, ua rau yooj yim rau kev teeb tsa hauv cov kab ke uas yuav xav tau txoj kev nkhaus lossis txoj kev hloov pauv. Qhov kev ywj pheej no ua rau lawv zoo tagnrho rau cov khoom siv nyuaj xws li cov chaw soj nstuam, cov thoob dej cia khoom cryogenic, thiab cov tes hauj lwm thauj mus los.

Xaus lus

Cov kav dej nqus tsevua lub luag haujlwm tseem ceeb hauv kev thauj cov kua helium, muab cov cua sov rwb thaiv tsev zoo heev uas txo qhov kub nce thiab txo qhov poob. Los ntawm kev tswj hwm qhov kev ncaj ncees ntawm cov kua cryogenic, cov kav dej no pab khaws cov helium muaj nqis thiab txo cov nqi ua haujlwm. Raws li kev lag luam txuas ntxiv tsim kho tshiab thiab xav tau cov txheej txheem cryogenic siab dua, lub luag haujlwm ntawmcov kav dej nqus tsev vacuumyuav tsuas yog loj hlob tuaj xwb. Nrog lawv cov kev ua haujlwm thermal thiab kev ua haujlwm ntev,cov kav dej nqus tsev vacuumtseem yog ib qho thev naus laus zis tseem ceeb hauv kev siv cryogenics, tshwj xeeb tshaj yog rau cov kua helium.

Xaus lus,cov kav dej nqus tsev vacuum(VJP) yog qhov tseem ceeb hauv kev siv cov kua helium, ua kom muaj kev thauj mus los zoo, txo cov khib nyiab, thiab ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kab ke cryogenic.

lub raj xa dej nqus tsev:https://www.hlcryo.com/vacuum-insulated-pipe-series/