Tam sim no, ib tug loj tus naj npawb ntawm cov ntaub ntawv insulators yog siv nyob rau hauv lub hwj chim daim phiaj sib kis kab, accounting txog li 50% ntawm cov kab insulator noj, ntawm uas linear yees account rau ib tug ntau dua kev faib ua feem. Yuav luag tag nrho cov kab yees hauv cov cheeb tsam uas muaj kuab paug hnyav siv cov khoom sib xyaw ua ke. Composite insulators tau daws qhov teeb meem ntawm cov pa phem flashover uas tau ua rau lub zog hluav taws xob tau ntau xyoo nrog kev ua haujlwm zoo los tiv thaiv kev ua pa phem, tab sis qhov teeb meem ntawm txoj hlua tsis sib txuas tau tshwm sim los ntawm qee lub sijhawm. Rau ib txoj hlua ntauwd, ib zaug cov khoom insulator puas lawm, cov kab feem ntau yuav poob rau hauv av, coj kev nyab xeeb kev nyab xeeb, rau ntau txoj hlua yees, thaum txoj hlua tawg, nws tseem yuav cuam tshuam rau cov yees thiab lwm yam insulators, uas yuav cuam tshuam qhov kev ntseeg ntawm kab. Nrog rau qhov txo qis hauv cov pa phem flashover mus txawv tebchaws nyob rau hauv xyoo tas los no, txoj hlua kev sib txuas tau dhau los ua ib qho teeb meem tseem ceeb uas tau ntsib los ntawm cov khoom siv hluav taws xob sib xyaw.
Ntau qhov laj thawj tuaj yeem ua rau cov hlua hluav taws xob sib xyaw ua ke. Muaj ntau qhov sib txawv ntawm qhov tshwm sim thiab kev xeem. Thaum txoj hlua tawg tshwm sim, nws yog ib qho tseem ceeb heev kom pom tseeb qhov ua rau txoj hlua tawg rau kev pov tseg tom ntej. Nyob rau tib lub sijhawm, sau cov ntsiab lus vim li cas rau txoj hlua insulator tawg thiab xyuas cov insulator' s network nkag. Nws tseem ceeb heev. Yog li no, tsab xov xwm no tham txog cov laj thawj ntawm cov hlua tawg ntawm cov khoom siv insulators, thiab yuav ua li cas los txheeb xyuas thiab txheeb xyuas lawv li cas.
2. Kev faib tawm thiab kev puas tsuaj ntawm cov khoom siv insulators
Cov hlua tawg ntawm cov khoom sib xyaw ua ke tuaj yeem muab faib ua peb hom: sab nraud quab yuam tearing, brittle fracture, thiab lwj. Ntawm lawv, muaj tsawg heev ntawm sab nraud quab yuam tearing, thiab brittle fracture thiab lwj yog lub ntsiab hom ntawm txoj hlua rupture.
2.1 tearing los ntawm sab nraud quab yuam
Qhov ua rau sab nraud quab yuam tearing feem ntau yog cua daj cua dub, kab mob hnyav heev, dej khov-tawm dhia, thiab lwm yam. Nyob rau hauv cov ntaub ntawv no, cov ntaub ntawv insulator yog stressed tshaj qhov tsim, ua rau txoj hlua disconnection.
Raws li tag nrho, lub zog txhua yam tswj tau ib feem ntawm lub insulator feem ntau yog lub pob taub hau caj dab, uas yog, thaum tsuas yog nyob rau hauv tensile kev nyuaj siab, lub pob taub hau feem ntau yog thawj zaug tawg. Txawm li cas los xij, thaum muaj kev sib xyaw ua ke ntawm kev ntxhov siab, kev ntxhov siab tensile lossis kev ntxhov siab, qhov kev sib txuas ntawm cov khoom siv insulator haum-mandrel yog qhov tsis muaj zog tshaj plaws, yog li txoj haujlwm tawg feem ntau nyob ntawm qhov sib txuas-mandrel.
Qhov sib xyaw insulator core pas nrig yog ua los ntawm cov iav fiber ntau muaj zog. Thaum nws raug puas tsuaj ib nrab thiab tom qab ntawd torn nyob rau hauv kev sib koom ua ke ntawm torsion kev ntxhov siab thiab tensile kev nyuaj siab, cov tub ntxhais qws pob txha feem ntau tsis sib xws, thiab qee cov fibers yog cov iav zoo li, tsis muaj cov cim carbonization ntawm cov pob txha.
2.2 Brittle fracture (kev nyuaj siab corrosion)
Brittle fracture yog hom tseem ceeb ntawm txoj hlua sib txuas uas tshwm sim nyob rau hauv daim ntawv thov thaum ntxov ntawm cov khoom siv insulators. Cov txheej txheem tawg yog nrog cov txheej txheem kev ntxhov siab corrosion, thiab qhov chaw tawg tuaj yeem nyob hauv cov fittings thiab ze ntawm qhov sib tshuam ntawm cov fittings thiab cov tub ntxhais pas nrig.
Qhov pom tseeb tshaj plaws ntawm cov pob txha tawg yog tias feem ntau ntawm cov pob txha tawg yog tiaj tus thiab du, ntu yog perpendicular mus rau axis ntawm mandrel, thiab cov pob txha raug mob morphology.
2.3 Corruption (mandrel carbonization)
Rotten breaking tau dhau los ua daim ntawv tseem ceeb ntawm kev sib xyaw insulator txoj hlua tawg hauv xyoo tas los no. Txoj hlua tawg yog nrog los ntawm cov txheej txheem sab hauv lub sijhawm ntev, thiab cov pob txha tawg feem ntau nyob ze ntawm qhov kawg ntawm cov hluav taws xob sib xyaw ua ke.
Cov tsos mob tseem ceeb ntawm cov pob txha tawg yog qhov tseem ceeb carbonization (blackening) ntawm lub mandrel, thiab cov pob txha tsis sib xws thiab muaj qhov pom tseeb threading, raug puas morphology.
3. Qhov ua rau thiab kev loj hlob ntawm txoj hlua tawg
Ntawm peb hom ntawm cov hlua tawg, qhov tshwm sim ntawm sab nraud quab yuam tearing yog qhov tsawg heev, thiab cov txheej txheem yog yooj yim, thiab nws yog ib qho yooj yim los soj ntsuam nrog huab cua huab cua. Yog li ntawd, tsab xov xwm no tsuas yog qhia txog qhov ua rau, kev txhim kho thiab kev txheeb xyuas cov txheej txheem ntawm kev tawg thiab tawg.
3.1 Cov pob txha tawg
Brittle fracture feem ntau yog nrog cov txheej txheem kev ntxhov siab corrosion. Lub insulator bears qhov hnyav ntawm cov hlau thiab raug rau qhov nro. Thaum cov tub ntxhais qws nkag rau hauv cov kua qaub rau qee qhov laj thawj, cov kua qaub kua qaub yuav corrode cov tub ntxhais qws. Cov tsis-acid resistant core pas nrig siv nyob rau hauv thaum ntxov composite insulator yog nyob rau hauv nruj nreem. Nyob rau hauv kev sib xyaw ua ke ntawm corrosion, cov tub ntxhais pas nrig maj mam tshwm cov kab nrib pleb, thiab cov kab nrib pleb maj mam nthuav mus txog rau thaum cov rods tseem tshuav tsis tuaj yeem tiv taus lub zog tensile thiab tawg.
Nws tuaj yeem pom los ntawm cov saum toj no tias muaj ob yam tseem ceeb rau kev tawg tawg: lub foob tsis ua haujlwm, thiab cov tub ntxhais pas nrig yog cov tub ntxhais uas tsis muaj kua qaub-resistant. Tsis tas li ntawd, qhov tshwm sim ntawm cov kab nrib pleb heev accelerates qhov tshwm sim ntawm brittle puas. Raws li cov xwm txheej tiag tiag, txoj kev loj hlob ntawm brittle fracture muaj ob pawg hauv qab no:
① Sealing tsis ua hauj lwm-cov tub ntxhais pas nrig yog damp-sab hauv paug tshwm sim-acidic khoom yog generated-kev nyuaj siab corrosion-cov tub ntxhais pas nrig yog nkig;
② Kev tsim cov teeb meem sab laug thaum kawg (wedge qauv) - foob tsis ua hauj lwm-acidic tshuaj nyob rau hauv cov huab cua nkag-kev nyuaj siab corrosion-core pas nrig brittle puas.
Cov kab nrib pleb yuav tsum tau tsav ib lub npoo mus rau qhov kawg ntawm cov tub ntxhais pas nrig, uas yog ib qho yooj yim kom tawm ntawm cov kab nrib pleb hauv cov tub ntxhais qws. Thaum lub foob zoo li qub, qhov kev loj hlob ntawm micro tawg yog qeeb heev. Thaum lub foob tsis ua tiav, cov kab nrib pleb saum toj no yuav dhau los ua qhov pib ntawm kev ntxhov siab corrosion.
Muaj peb hom kev foob tsis ua haujlwm:
① Xaus foob tsis ua hauj lwm: lub sealant yog tawg, los yog qhov kawg yog puas thaum lub sij hawm installation, ua rau lub foob tsis ua hauj lwm.
② Kev puas tsuaj ntawm lub plhaub ua rau lub foob tsis ua haujlwm:
A. Cov khoom siv sheath tsis zoo, thiab cov sheath yog corroded los ntawm sab nraud tawm; yuav muaj corona tso tawm rau ntawm qhov chaw ntawm cov khoom siv insulator nyob rau hauv cov huab cua los nag, thiab qhov kawg yuav tau yooj yim hlawv los ntawm high-temperature arc thaum nws raug ntaus los ntawm xob laim. Yog hais tias lub sheath muaj tsis txaus hluav taws xob tiv thaiv corrosion, Nyob rau hauv cov xwm txheej saum toj no, nws yog ib qho yooj yim rau tawg thiab ua rau cov tub ntxhais pas nrig kom damp.
B. Kev teeb tsa tsis raug ntawm lub nplhaib sib npaug ua rau cov kab mob corona ntau dhau thiab yaig ntawm lub plhaub; Kev teeb tsa tsis raug ntawm lub nplhaib sib npaug lossis kev xaiv tsis raug yuav ua rau muaj kev cuam tshuam corona loj heev ntawm qhov kawg-voltage, thiab cov kev cuam tshuam ntev yuav ua rau lub plhaub thiab ua rau cov cores. Damp.
③ Muaj teeb meem ntawm lub sheath-mandrel interface, thiab noo noo nkag mus rau hauv mandrel los ntawm diffusion.
3.2 Kev poob qis
Tam sim no, feem ntau ntawm cov khoom siv hluav taws xob hauv kev ua haujlwm siv cov kua qaub-resistant core rods, yog li qhov tshwm sim ntawm cov pob txha tawg tau raug txo kom tsawg, thiab kev lwj tau dhau los ua cov ntaub ntawv tseem ceeb ntawm cov hlua hluav taws xob tawg. Kev lwj yog feem ntau nrog los ntawm kev tawm mus ntev hauv lub mandrel, thiab lub zog tsim maj mam ua rau cov qauv ntawm mandrel hloov. Ntawm ib sab, cov resin uas cua thiab kho cov iav fiber ntau decomposes thiab cov iav fiber ntau ua mos. Ntawm qhov tod tes, cov iav fiber ntau yog carbonized, thiab cov khoom siv kho tshuab tseem ceeb. Txo kom txog thaum lub mandrel tuaj yeem' tsis dais lub load thiab so.
Hauv cov txheej txheem no, cov teeb meem sab hauv tsim kho raws cov kev taw qhia radial ntawm cov tub ntxhais pas nrig thaum tseem tab tom txhim kho raws axial kev taw qhia. Internal paug channel yog generated nyob rau hauv lub tub ntxhais pas nrig.
Raws li lub hauv paus chiv keeb ntawm kev tso tawm sab hauv ntawm tus pas nrig, qhov lwj tuaj yeem muab faib ua ob pawg hauv qab no:
① Sealing puas (kawg foob tsis ua hauj lwm los yog sheath puas) - cov tub ntxhais pas nrig yog damp-sab hauv paug tshwm sim-acid yog tsim-cov tub ntxhais pas nrig yog carbonized-dua;
Lub hauv paus chiv keeb ntawm kev tso tawm sab hauv ntawm hom rupture no yog qhov tsis ua haujlwm ntawm qhov kawg foob thiab kev puas tsuaj ntawm cov ntaub qhwv. Qhov laj thawj yog tib yam li cov pob txha tawg tau piav saum toj no. Nws tuaj yeem pom tias txawm tias siv cov kua qaub-resistant mandrel, tsuav yog lub foob tsis ua tiav, txoj hlua tawg tseem yuav tshwm sim!
② Muaj qhov tsis xws luag hauv cov tub ntxhais pas nrig - qhov dej nkag mus - tawm sab hauv - tsim cov tshuaj acidic - corrosion ntawm lub plhaub - ua kom muaj kev tawm sab hauv - carbonization ntawm cov tub ntxhais pas nrig;
Internal defects ntawm mandrel feem ntau yog tshwm sim los ntawm cov neeg pluag mandrel-sheath interface, xws li cov neeg pluag kev sib raug zoo, cov cua qhov nyob rau hauv lub interface, thiab lwm yam. Cov neeg pluag bonding yuav ua rau debonding thiab nyob rau hauv cov huab cua sib txawv. Cov txheej txheem tseem ceeb ntawm txoj hlua tawg yog raws li hauv qab no: qhov saum npoo ntawm cov ntaub qhwv tsis zoo, tab sis cov dej noo tau nkag mus rau hauv cov tub ntxhais pas nrig. Yog vim li cas yog tias thaum muaj huab cua sib txawv hauv cov tub ntxhais qws, cov dej sab nraud tuaj yeem nkag mus rau hauv cov tub ntxhais pas nrig los ntawm cov txheej txheem diffusion.
4. Txoj kev txheeb xyuas txoj hlua tawg
Nws yog ib qho yooj yim kom tau txais cov lus qhia los ntawm huab cua cov ntaub ntawv rau txoj hlua tawg los ntawm sab nraud quab yuam tearing. Yog li ntawd, tsuas yog kev tsom xam ntawm brittleness thiab lwj yog tham ntawm no. Thaum txoj hlua tawg tshwm sim, thawj zaug txiav txim seb txoj hlua tawg puas yog qhov tawg tawg lossis tawg tawg raws li cov pob txha tawg thiab qhov chaw, thiab tom qab ntawd xaiv cov khoom sib txuas rau kev kuaj xyuas raws li qhov ua tau tau piav qhia saum toj no.
4.1 Cov pob txha tawg
Yog tias nws raug txiav txim siab ua pob txha tawg, raws li cov lus hais saum toj no, nws yuav yog txoj hlua tawg los ntawm kev foob tsis ua haujlwm + non-acid resistant mandrel, los yog cov khoom seem ntawm qhov kawg + foob tsis ua hauj lwm + non-acid resistant mandrel.
① Foob tsis ua haujlwm + tsis-acid resistant mandrel
Kev pov thawj ntawm qhov kawg foob tsis ua hauj lwm: ua ib qho kev ntsuas nruj ntawm tib batch ntawm cov khoom, dissect lub tawg insulator fittings, thiab tshuaj xyuas cov khoom nyob rau hauv xeb.
Kev ntsuas nruj yog siv 70% ntawm cov khoom ntsuas ntsuas rau cov khoom siv hluav taws xob sib xyaw rau 96 teev, tom qab ntawd qhwv qhov kawg nrog kev nkag mus rau 20 feeb, thiab xyuas seb cov xim puas tau nkag mus rau qhov kawg thiab qhov tob ntawm kev nkag los ntawm kev kuaj pom thiab lub cev. Tsuav qhov tob tob tob tsis ncav cuag cov tub ntxhais pas nrig, qhov kawg foob yog suav tias tsim nyog.
Kev foob tsis ua tiav thaum kawg feem ntau yog ib qho piv txwv. Kev ntsuas kev sib khi ntawm cov khoom siv tib yam yuav tsis pom qhov teeb meem, tab sis yog tias muaj kev foob tsis ua haujlwm thaum kawg, nws yuav siv sij hawm qee lub sij hawm rau cov txheej txheem kev ntxhov siab corrosion kom tshwm sim, yog li qhov kawg fittings feem ntau xeb sab hauv yog li ntawd, nws. yog qhov ncaj qha thiab siv tau zoo tshaj plaws los txiav qhov kawg ntawm cov insulators tawg thiab xyuas cov khoom xeb.
Kev pov thawj ntawm kev sib khi tsis ua haujlwm tshwm sim los ntawm cov khoom siv tsis zoo: ua qhov kev soj ntsuam thiab hluav taws xob corrosion poob ntawm lub kaus npog cov khoom siv rau tib cov khoom lag luam.
Umbrella npog cov ntaub ntawv xau thiab hluav taws xob tiv thaiv kev ntsuas hluav taws xob yog txiav lub tsho insulator lub kaus rau hauv cov qauv tiaj tus ntawm qee qhov tuab, thiab siv cov qauv ntsuas qhov ntsuas qhov ntsuas tsis tu ncua, qhov ntsuas hluav taws xob yog AC 4.5kV, thiab cov qauv tuaj yeem tiv taus 6h thiab corrosion Yog hais tias qhov tob tsis tshaj 2.5 hli, qhov kev ntsuam xyuas raug txiav txim siab kom dhau.
Kev pov thawj ntawm kev foob tsis ua hauj lwm los ntawm kev teeb tsa tsis raug ntawm lub nplhaib sib npaug: xyuas seb lub nplhaib sib npaug yog ntsia rov qab, seb qhov chaw teeb tsa puas yog, thiab ua qhov kev ntsuas hluav taws xob hauv hluav taws xob ntawm cov phiaj xwm sib npaug ntawm lub nplhaib sib npaug.
Kev pov thawj ntawm kev foob tsis ua haujlwm los ntawm kev ua haujlwm tsis zoo ntawm mandrel-sheath interface: Ua mandrel permeability test, mandrel nrog sheath water diffusion test, fais fab zaus tuaj yeem ntsuas qhov kub thiab txias, ntsuas yoj yoj, thiab autopsy rau tib batch ntawm insulators.
Mandrel Acid Resistance Verification: Ua mandrel acid resistance test ntawm tawg insulators los yog cov khoom ntawm tib batch.
Kev ntsuas cov kua qaub ntawm cov tub ntxhais pas nrig yog tev tawm ib feem ntawm lub plhaub ntawm lub insulator kom nthuav tawm cov tub ntxhais pas nrig, thiab tom qab ntawd txhuam nws thiab qhwv nws nrog 1mol / L nitric acid. Nyob rau tib lub sijhawm, qee qhov tensile quab yuam yog thov rau 96h. Tus nqi tensile quab yuam yog cov khoom ntawm thaj tsam ntawm cov tub ntxhais pas nrig thiab 300MPa, xws li 96h. Yog hais tias lub rear mandrel tsis puas thiab tsis muaj qhov pom tseeb tawg ntawm qhov chaw, nws tau txiav txim siab tias mandrel yuav tsum tau acid-resistant thiab compound. (tseem hu ua acid-resistant mandrel)
Yog xav paub ntxiv txog cov txheej txheem thiab cov txheej txheem uas tau hais los saum toj no, saib" GB/T 19519-2014 Overhead Line Insulators-Suspension and Strain Composite Insulators for AC Systems with a Nominal Voltage Ntau tshaj 1000V Lus Txhais, Test Methods thiab Txais Kev Cai".
② Kev tsim khoom tsis zoo thaum kawg + foob tsis ua haujlwm + tsis-acid resistant mandrel
Kev pov thawj ntawm kev foob tsis ua hauj lwm thiab tsis-acid-resistant mandrel yog tib yam li saum toj no. Xaus kev tsim khoom tsis raug tuaj yeem txheeb xyuas tau los ntawm kev kuaj xyuas kev puas tsuaj ntawm cov khoom siv tib yam. Txawm li cas los xij, qhov kawg kev tsim khoom tsis xws luag feem ntau yog ib rooj plaub thiab nws yog ib qho nyuaj rau taug qab qhov chaw kom raug los ntawm kev xeem. Nws tuaj yeem pab tau los ntawm qhov kawg qauv thiab txoj hauj lwm ntawm qhov tawg. Yog tias qhov kawg tau txais cov qauv kab thiab cov pob txha tawg nyob rau hauv qhov kawg haum thiab nyob ze rau qhov kawg ntawm cov kab uas tau tsav, nws txhais tau hais tias muaj peev xwm ntau dua ntawm kev tsim khoom tsis xws luag hauv.
4.2 Yog
Yog tias nws raug txiav txim siab ua pob txha tawg, raws li cov lus hais saum toj no, nws yuav yog qhov kev tso tawm sab hauv lub sijhawm ntev los ntawm lub foob tawg uas ua rau txoj hlua tawg, lossis cov pas nrig tseem ceeb muaj qhov tsis xws luag sab hauv uas erodes lub sheath ntawm lub sab hauv mus rau sab nraud thiab ua rau sab hauv lub sij hawm ntev tso tawm ua rau txoj hlua tawg.
① Foob tawg + mus sij hawm ntev sab hauv
Cov txheej txheem pov thawj rau qhov kawg foob tsis ua hauj lwm thiab lub tsho puas yog ua raws li nqe lus dhau los 3.1.
Yog tias pom ib lub qhov ntawm lub mandrel, seb lub qhov yog tshwm sim los ntawm ib qho kev sab nraud uas ua rau lub plhaub sealing tsis ua hauj lwm, los yog seb nws yog tshwm sim los ntawm qhov tsis xws luag thiab perforation, yuav yog tus yuam sij rau kev txiav txim. Koj tuaj yeem pib nrog qhov sib txawv ntawm qhov sib txawv ntawm sab hauv thiab sab nraud ntawm lub qhov. Feem ntau, sab nrog ntau dua ntawm cov khoom siv carbonized muaj qhov ua tau zoo dua ntawm kev pib tawm lub sijhawm ua ntej, thiab qhov tshwm sim ntawm lub qhov pib ntawm sab no ntau dua.
② Cov tub ntxhais pas nrig muaj qhov tsis xws luag
Nyob rau hauv xyoo tas los no, qhov tsis xws luag sab hauv ntawm mandrel feem ntau tshwm sim los ntawm qhov tsis zoo mandrel-sheath interface. Kev txheeb xyuas qhov tsis zoo ntawm qhov cuam tshuam: Ua cov tub ntxhais pas nrig permeability xeem, core pas nrig nrog sheath dej diffusion kuaj, lub zog zaus tuaj yeem ntsuas qhov kub thiab txias, ntsuas yoj yoj, thiab necropsy rau tib batch ntawm insulators.
Cov tub ntxhais pas nrig permeability xeem yog txiav cov tub ntxhais pas nrig rau hauv 10 hli cov qauv ntev, cov kev taw qhia txiav yog perpendicular rau cov tub ntxhais pas nrig, xuab zeb ob kawg nrog cov ntawv xuab zeb, thiab muab tso rau hauv cov tshuaj liab los yog ntshav methine. Cov tshuaj yuav fim tus qauv nyob rau hauv capillary kev txiav txim. Sab saum toj kawg nkaus nkag mus, thiab lub sijhawm rau kev daws kom nkag mus rau sab saum toj hauv lub mandrel yog ntsuas.
Kev ntsuas dej ntawm lub mandrel nrog sheath yog txiav lub mandrel rau hauv 30 hli ntev qauv, txiav kev taw qhia yog perpendicular mus rau mandrel, polish ob kawg nrog sandpaper, boil nws nyob rau hauv ib tug 0.1% NaCl tov rau 100h, thiab ces siv ib tug 12kV. AC voltage rau 1min, ntsuas qhov to tam sim no.
Lub zog zaus tiv taus qhov ntsuas kub ntsuas qhov ntsuas kub yog siv qhov kev ua haujlwm siab tshaj plaws rau lub rwb thaiv tsev rau 30 feeb, thiab siv infrared los ntsuas qhov kub thiab txias ntawm lub rwb thaiv tsev.
Kev ntsuas yoj yoj yog ua kom sov lub rwb thaiv tsev hauv dej rau 42 teev, thiab siv qhov hluav taws xob impulse nrog qhov siab ntawm 1000kV / us-1500kV / μs, ntxiv rau thiab rho tawm 25 zaug txhua.
Necropsy yog tshem tawm lub plhaub nrog rab riam lossis lwm qhov quab yuam, thiab saib xyuas qhov chaw ntawm lub mandrel tom qab lub plhaub tau tev tawm.
Cov ncauj lus kom ntxaws ntxiv txog qhov kev ntsuas saum toj no tuaj yeem pom hauv" GB / T 19519-2014 Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob nrog Nominal Voltage Ntau tshaj 1000V AC System Kev ncua thiab Tension Composite Insulators Txhais, Kev Ntsuas thiab Kev Cai Txais" .
Tom qab tshem tawm qhov teeb meem sealing, ib qho kev txawv txav tseem ceeb hauv ib qho ntawm cov kev ntsuam xyuas saum toj no tuaj yeem txiav txim siab tias cov insulator yuav muaj teeb meem cuam tshuam. Cov yam ntxwv txawv txav tseem ceeb ntawm txhua qhov kev xeem xa mus rau:
Core pas nrig permeability xeem: Cov seem xeem ntawm cov tub ntxhais pas nrig yog nkag los ntawm cov tshuaj methine hauv 15 feeb.
Mandrel nrog sheath dej diffusion xeem: qhov to tam sim no ntawm mandrel tshaj 1mA;
Lub zog zaus tuaj yeem ntsuas qhov kub thiab txias: Thaum lub sij hawm simulation simulation, qhov kub nce ntawm cov tub ntxhais pas nrig yog qhov tseem ceeb, thiab qhov kub thiab txias yuav maj mam nce nrog lub sij hawm ntxiv ntawm lub sij hawm pressurization; Yog hais tias nws tsuas yog ib tug me ntsis kub nce, tej zaum nws yuav hais tias lub sheath yog damp, tab sis tsis muaj teeb meem nyob rau hauv lub mandrel.
Kev ntsuam xyuas yoj yoj: sab hauv kev tawg ntawm cov tub ntxhais pas nrig;
Necropsy: Ib cheeb tsam loj ntawm mandrel nto yog ncaj qha raug.