Cov Ntsiab Cai Tsim Cov Qauv Tshwj Xeeb rau Ultra-Tshav Kub Kub Ib Leeg-Ended Cartridge rhaub
Cryogenic kuaj chambers, qis -kub tsheb thauj mus los thiab aerospace xeem fixtures tsis tu ncua nce thov rau cov khoom siv hluav taws xob txhim khu kev qha ua haujlwm ntawm -80℃. Ntau pawg neeg yuav khoom thiab engineering pab pawg pom cov khoom siv hluav taws xob tsis tuaj yeem ua kom muaj txiaj ntsig zoo ib yam tom qab lub sijhawm ua haujlwm ntev - nyob rau hauv qhov chaw khov. Ib feem loj ntawm kev ua tsis tiav thaum ntxov tshwm sim los ntawm kev tsis quav ntsej cov qauv tsim tshwj xeeb tshwj xeeb rau ultra- qhov kub tsis tshua muaj qhov kub ntawm ib qho kawg cartridge rhaub.
Raws li cov ntaub ntawv sib sau ua ke hauv cov khoom siv hluav taws xob, cov khoom siv hluav taws xob sab hauv thermal ntawm lub tshuab hluav taws xob hloov pauv tag nrho hauv cov xwm txheej tsis zoo. Ntawm -80 degree, cua sov dissipation ceev los ntawm cov hlau sheath mus rau ib puag ncig cua nrawm nrawm heev. Yog tias lub zog ntom ntom ntawm qhov chaw tsis raug teeb tsa kom raug, qhov tsis sib xws ntawm cov hluav taws xob hluav taws xob yuav tshwm sim hauv ib qho - tas cartridge rhaub. Qhov zoo tshaj plaws ceev qhov rais rau ultra-low kub daim ntawv thov nyob ntawm 5 W / cm² thiab 7 W / cm². Cartridge rhaub tsim tshaj li qhov no ntsib teeb meem kev ntseeg siab. Thaum qhov ceev tshaj 7 W / cm², cov cua sov sab hauv hluav taws xob ua rau muaj kev kub ntxhov thermal hloov txhua qhov pib, ua kom cov hlau qaug zog. Thaum qhov ceev poob qis dua 5 W / cm², cov khoom cua kub txaus tsis tuaj yeem xa tuaj rau hauv qhov txwv qhov ntev.
Kev hloov kho nruab nrab ntawm rwb thaiv tsev sawv cev rau kev hloov kho tseem ceeb rau ultra-tsawg kub cartridge rhaub. Ordinary magnesium oxide hmoov muaj impurities uas ua rau tawg nyob rau hauv txias heev. Kev txhim kho siab -purity compacted magnesium oxide sib tov tiv thaiv ntim contraction ntawm -80 degree, ua kom ruaj khov rwb thaiv tsev tiv thaiv txawm tias lub rhaub yog powered los yog dormant. Ntau cov khoom siv hluav taws xob hluav taws xob siv hluav taws xob siv cov khoom siv hluav taws xob qis uas tsis muaj cov ntaub ntawv pov thawj cryogenic, ua rau cov rwb thaiv tsev tiv thaiv poob sai sai tom qab kaum ob lub voj voog pib txias.
Mounting kam rau ua kuj cuam tshuam rau kev ua haujlwm ruaj khov ntawm ultra- qhov kub tsis tshua muaj ib qho - tas cartridge rhaub. Loose haum nruab nrab ntawm lub tshuab hluav taws xob lub tshuab hluav taws xob sab nrauv thiab lub qhov mounting tsim cov pa tawm. Huab cua ua raws li thermal barrier nyob rau hauv ultra- kub tsis tshua muaj, zoo heev txo tshav kub hloov efficiency. Tight clearance matching yuav tsum tau lav zoo thermal conduction. Nyob rau tib lub sijhawm, rov ua qhov kub thiab txias ntawm -80℃mus rau qhov kub thiab txias ua haujlwm tsim kev nthuav dav thiab kev cog lus. Kev sib dhos nruj heev tuaj yeem ua rau sheath jamming thiab mechanical stress puas.
Environmental corrosion yuav tsum tsis txhob underestimated. Qee qhov qis- qhov chaw ua haujlwm kub muaj cov kab mob chemical vapors. Yog tsis muaj kev tiv thaiv- corrosion sheath kho, cartridge rhaub txheej phab ntsa maj mam raug corrosion, tsim cov ntsiab lus overheating hauv zos. Incoloy 800 sheath muab superior qis-kub toughness thiab tshuaj tiv thaiv piv rau ib txwm stainless hlau rau hnyav cryogenic ua hauj lwm tej yam kev mob. Terminal tiv thaiv qauv xav tau kev saib xyuas ntxiv thiab. Qhib terminals absorb ambient ya raws yooj yim; Thaum kub nce thaum cua sov, dej vapor nkag mus rau hauv lub rhaub dej sab hauv thiab rhuav tshem cov txheej txheem rwb thaiv tsev.
Txhua qhov ultra- cov dej kub cua kub tsis tuaj yeem tso siab rau universal cartridge heater parameters. Qhov ceev calibration xws li ntawm 5 mus rau 7 W / cm², hloov kho cov qauv rwb thaiv tsev, cov ntaub ntawv sib txuam thiab kev sib dhos ua kom haum rau kev npaj yuav tsum tau ua ke. Cov khoom siv cryogenic sib txawv sib txawv hauv lub voj voog ua haujlwm, qib av noo thiab kev txuag hluav taws xob. Kev ntsuam xyuas qhov ntsuas tsis zoo pab xaiv qhov tsim nyog ultra- qhov kub tsis tshua muaj siab ib zaug - tas lub tshuab cua sov thiab zam cov khoom siv tsis tsim nyog downtime thiab cov nqi hloov khoom siv.
