Nyob rau hauv kev tsim thiab xaiv cov cartridge rhaub, lub thickness ntawm cov hlau sheath (los yog lub tsho) yog ib qho tseem ceeb parameter. Nws tsis yog ib rooj plaub ntawm "qhov thicker qhov zoo" los yog "qhov thinner qhov zoo dua." Xwb, nws yuav nrhiav tau qhov zoo tshaj plaws tshuav point ntawm thermal conductivity efficiency thiab txhua yam muaj zog. Kev nkag siab txog qhov sib npaug no yog qhov tseem ceeb rau kev ua kom lub tshuab rhaub dej ua haujlwm zoo, nyab xeeb, thiab ua haujlwm ntev hauv nws daim ntawv thov tshwj xeeb.
I. Qhov cuam tshuam ntawm Sheath Thickness ntawm Thermal Efficiency: Ua raws li cov lus teb nrawm thiab txuag hluav taws xob
Cov txheej txheem cua sov ua raws li Fourier Txoj Cai. Cias muab tso, lub sheath nws tus kheej tsim ib tug "thermal resistance" nyob rau hauv txoj kev ntawm tshav kub hloov ntawm lub internal kuj hlau mus rau sab nraud. Thermal resistance yog ncaj qha proportional rau sheath thickness.
Slower Thermal Response: Cov ntaub qhwv tuab dua txhais tau tias muaj kev tiv thaiv thermal ntau dua. Qhov no txhais tau tias yuav tsum tau siv sijhawm ntev dua rau lub tshuab cua sov kom mus txog lub zog- kom ncav cuag qhov ntsuas kub ntawm nws qhov chaw. Piv txwv li, lub rhaub nrog 1.5mm tuab sheath yuav muaj lub sij hawm preheating ntev dua piv rau cov qauv zoo sib xws nrog 0.8mm tuab sheath. Nyob rau hauv cov txheej txheem uas yuav tsum tau ceev kub nce, qhov no yuav cuam tshuam cov efficiency ntau lawm.
Txo qhov ruaj khov-Lub Xeev Thermal Efficiency: Txawm tias tom qab tau mus txog qhov chaw ua haujlwm ruaj khov, cov ntaub qhwv tuab dua ua rau cov khoom siv hluav taws xob tsis tu ncua. Cov cua kub ntau yog "raug" sab hauv, yuam kom cov xaim sab hauv los ua haujlwm ntawm qhov kub siab dua kom tswj tau qhov kub thiab txias. Qhov no tsis tsuas yog nce lub zog noj, tab sis kuj tseem ua rau kev laus ntawm cov khoom siv magnesium oxide rwb thaiv tsev.
Qhov kub thiab txias qhov sib txawv ntawm cov tub ntxhais thiab qhov saum npoo: Lub plhaub tuab ua rau qhov loj dua radial kub gradient. Qhov no txhais tau hais tias qhov ntsuas kub ntawm cov hlau tsis muaj zog tuaj yeem siab dua li tus nqi tsim, tsim cov chaw kub kub uas ua rau cov ntsiab lus tsis ua haujlwm.
Cov ntsiab lus: Los ntawm kev pom zoo thermal, lub hnab nyias nyias (piv txwv li, 0.6-1.0mm) muaj cov txiaj ntsig tseem ceeb, muab cov lus teb sai dua thermal, ntau dua qhov kub ntawm qhov kub, thiab qis hauv kev ua haujlwm kub.
II. Qhov cuam tshuam ntawm Sheath Thickness ntawm Mechanical Strength: Ua kom muaj kev nyab xeeb thiab kav ntev
Lub sheath yog lub tshuab cua sov thawj kab ntawm kev tiv thaiv sab nraud cov neeg kho tshuab kev ntxhov siab, thiab nws cov thickness ncaj qha txiav txim siab cov txheej txheem robustness.
Siab Resistance thiab Anti-Deformation Peev Xwm: Thaum lub sij hawm kev teeb tsa (xws li, nias- haum rau hauv lub qhov pwm) los yog kev ua haujlwm, lub tshuab cua sov yuav raug radial siab. Sheath thickness muaj kwv yees li linear kev sib raug zoo nrog compressive zog. Lub sheath uas yog 1.2 hli tuab tuaj yeem tiv taus txog 40% siab dua li ib qho uas yog 0.8 hli tuab, tiv thaiv kev sib tsoo lossis deformation.
Bending thiab Vibration Resistance: Raws li cov khoom siv kho tshuab, cov qauv kev khoov nruj yog proportional rau lub voos xwmfab ntawm nws cov tuab. Txawm tias me ntsis nce hauv thickness tuaj yeem txhim khu kev tiv thaiv kom khoov deformation. Nyob rau hauv ib puag ncig nrog kev co lossis kev poob siab, lub hnab tuab tuaj yeem tiv thaiv cov kab nrib pleb lossis pob txha uas tshwm sim los ntawm kev qaug zog, ncua kev pabcuam lub neej ntau zaus.
Corrosion Resistance thiab Safety Margin: Nyob rau hauv corrosive (xws li, acidic, alkaline media) los yog siab -kub oxidizing ib puag ncig, cov hlau sheath maj mam erodes. Qhov "corrosion allowance" tsim los rau hauv lub rhaub yog ua tiav los ntawm kev ua kom lub thickness. Lub hnab tuab tuab ua kom ntseeg tau tias cov qauv tsim muaj kev ruaj ntseg txaus txawm tias tom qab cov khoom poob vim corrosion, tsis txhob muaj kev puas tsuaj xws li perforation thiab to.
Xaus: Los ntawm qhov kev xav ntawm cov neeg kho tshuab lub zog thiab kev nyab xeeb, lub hnab tuab (piv txwv li, 1.0-1.5mm lossis ntau dua) muab kev ua haujlwm zoo dua, kev pheej hmoo ua haujlwm, thiab lub neej ua haujlwm ntev dua.
III. Nrhiav qhov sib npaug: Cov kev xav tseem ceeb thiab cov tswv yim ua kom zoo
Tus tsim lub luag haujlwm yog ua kom muaj kev paub txog kev lag luam- tawm ntawm cov kev sib tw ua ntej raws li qhov kev thov tshwj xeeb.
1. Daim Ntawv Thov Kev Pabcuam Tseem Ceeb:
Scenarios Ua Ntej Thermal Efficiency: Qhov zoo tshaj plaws rau cov kua cua sov (dej, roj, thiab lwm yam). Cov kua dej muaj cov coefficient ntawm convective heat transfer coefficients thiab tuaj yeem nqa cov cua sov sai sai. Ib daim nyias nyias maximizes qhov ceev ntawm tshav kub hloov, ua tau zoo efficiency thiab txuag zog. Feem ntau, lub thickness ntawm 0.8-1.0mm yog xaiv.
Scenarios Prioritizing Mechanical Strength: Qhov zoo tshaj plaws rau siab- cua kub cua sov, ntxig-style pwm cua sov, lossis ib puag ncig uas muaj kev kub siab lossis kev co. Ntawm no, kev ntseeg siab yog qhov tseem ceeb, yuav tsum muaj cov ntaub tuab tuab los tiv thaiv deformation thiab qaug zog. Feem ntau, lub thickness ntawm 1.2-1.5mm los yog ntau tshaj yog xaiv.
Extreme Corrosive Environments: Qhov kev tiv thaiv corrosion yog qhov kev txhawj xeeb tseem ceeb. Thawj phab ntsa thickness yuav tsum tau txaus kom tom qab xav tau corrosion tsis dhau lub rhaub lub neej, nws tseem tshaj qhov tsawg kawg nkaus ruaj ntseg thickness. Qhov no feem ntau xav tau phab ntsa thickness tsawg kawg yog 1.5 hli.
2. Tshaj Tawm Txog Kev Ua Lag Luam -tawm nrog Cov Khoom Siv thiab Kev Tsim Kho Tshiab:
Xaiv High-Strength lossis High-Cov Khoom Siv Hluav Taws Xob: Siv siab- lub zog alloys (piv txwv li, Inconel) tso cai rau siv cov phab ntsa nyias nyias thaum ua tau raws li qhov yuav tsum tau muaj zog. Kev siv cov khoom siv hluav taws xob siab (piv txwv li, tooj liab, nrog cov txheej txheem tiv thaiv) tso cai rau kev hloov pauv sai nrog cov phab ntsa nyias, tab sis cov nqi thiab kev txwv kev siv (xws li, kub, corrosion resistance) yuav tsum tau soj ntsuam.
Txais Cov Qauv Tsim Qauv Tsim Kho Tshiab: Piv txwv li, koom nrog kev txhawb nqa cov tav lossis hauv zos thickening nyob rau hauv uas tsis yog - qhov chaw hloov hluav taws xob tseem ceeb thaum tuav cov phab ntsa nyias ntawm qhov chaw hloov hluav taws xob tseem ceeb; los yog tsim cov raj sib xyaw (cov txheej sab hauv nrog cov khoom siv siab, txheej txheej nrog lub zog siab / corrosion kuj).
IV. General Design Guidelines and Recommendations
Rau feem ntau cov pa siv hauv kev lag luam, lub plhaub tuab ntawm 0.8mm txog 1.2mm sawv cev rau qhov siv tau "zoo tshaj plaws" uas muaj kev cuam tshuam zoo ntawm ob pawg ntawm cov yam ntxwv ua haujlwm. Thaum ua ib qho kev xaiv tshwj xeeb hauv qhov ntau:
Thaum qhov chaw ua haujlwm yog me me thiab thermal efficiency yog qhov tseem ceeb (piv txwv li, immersion dej cua sov), lean mus rau qis kawg ntawm qhov ntau (0.8-1.0mm).
Thaum txhua yam kev ntxhov siab, siab, lossis kev vibration yog qhov kev sib tw tseem ceeb (piv txwv li, tuag-casting pwm cua sov), lean mus rau qhov kawg ntawm qhov ntau (1.0-1.2mm lossis siab dua).
Thaum kawg, cov txheej txheem xaiv kev tshawb fawb suav nrog: Kev txhais cov ntawv thov (nruab nrab, qhov kub thiab txias, siab, kev co) → Txiav txim siab lub hom phiaj kev ua tau zoo (cov lus teb ceev los yog kev ntseeg siab tiag tiag) → xam qhov tsim nyog lub zog lossis kev tiv thaiv corrosion → Xaiv lub thickness ntawm cov khoom siv thiab cov txheej txheem uas ua tiav qhov zoo tshaj plaws sib npaug. Los ntawm qhov kev tshuaj ntsuam xyuas zoo no, lub tshuab rhaub cartridge tuaj yeem ua kom tiav nws txoj haujlwm zoo thiab nyab xeeb thoob plaws hauv nws lub neej kev pabcuam.
