Cov yam ntxwv ntawm ceramic insulators
Raws li cov yam ntxwv ntawm daim ntawv thov, cov khoom siv hluav taws xob ceramic tuaj yeem muab faib ua: insulators rau cov kab, insulators rau cov chaw nres tsheb fais fab lossis cov khoom siv hluav taws xob;Nws tuaj yeem muab faib ua cov insulator sab hauv tsev thiab sab nraum zoov insulator raws li daim ntawv thov ib puag ncig;Ceramic, ntuj av nplaum ua raw khoom, sib xyaw cov khoom tsim, workpiece Ordinary ceramics yog siv rau kev siv txhua hnub, kev tu vaj tse, khoom siv hluav taws xob (cov rwb thaiv tsev), tshuaj lom neeg kev lag luam thiab tshwj xeeb ceramics - capacitors, piezoelectric, sib nqus, electro-optic thiab kub kub hluav taws xob ceramics. feem ntau yog cais raws li cov khoom zoo, theem voltage thiab daim ntawv thov ib puag ncig ntawm hluav taws xob ceramics.Raws li cov khoom zoo, nws tuaj yeem muab faib ua: disc ncua kev kawm ntawv insulator, tus pin insulator, qws insulator, hollow insulator, thiab lwm yam;Raws li qib voltage, nws tuaj yeem muab faib ua cov hluav taws xob qis (AC 1000 V thiab qis dua, DC 1500 V thiab qis dua) insulators thiab high-voltage (AC 1000 V thiab siab dua, DC 1500 V thiab siab dua) insulators.Ntawm cov high-voltage insulators, muaj ultra-high voltage (AC 330kV thiab 500 kV, DC 500 kV) thiab ultra-high voltage (AC 750kV thiab 1000 kV, DC 800 kV).
Ib hom kev ua haujlwm ceramics uas nws qhov kev hloov pauv hloov pauv nrog qhov kub thiab txias.Raws li cov yam ntxwv kub tsis kam, nws tau muab faib ua qhov zoo kub coefficient (PTC) Thermal Ceramics thiab tsis zoo kub coefficient (NTC) Thermal Ceramics.
Lub resistivity ntawm Thermal Ceramics nrog zoo kub coefficient txo exponentially nrog qhov nce ntawm kub.Cov yam ntxwv no yog xav tau los ntawm cov khoom siv hluav taws xob ntawm cov nplej thiab cov ciam teb hauv cov qauv ntawm ceramics.Tsuas yog ceramics nrog tag nrho semiconducted nplej thiab tsim nyog rwb thaiv tsev ntawm grain ciam teb yuav muaj tus yam ntxwv no.Feem ntau siv qhov kub thiab txias coefficient thermosensitive ceramics yog semiconducting BaTiO ceramics uas muaj kev txhawb nqa impurities thiab workpieces hauv qhov chaw txo qis.Lawv tsuas yog siv los ua lub zog hom viav vias sib txawv ntawm cov thermosensitive ceramic resistors, tam sim no limiters, thiab lwm yam.
Lub resistivity ntawm qhov kub tsis zoo coefficient thermosensitive ceramics nce exponentially nrog qhov nce ntawm qhov kub thiab txias.Feem ntau ntawm cov ceramics yog cov hloov pauv hlau oxide cov ntsiab lus nrog cov qauv spinel, uas yog, feem ntau oxides uas muaj ib lossis ntau dua cov hlau hloov pauv (xws li Mn, Cu, Ni, Fe, thiab lwm yam).Cov qauv tshuaj siv dav dav yog AB2O4, thiab nws cov txheej txheem ua haujlwm sib txawv raws li muaj pes tsawg leeg, qauv thiab hom semiconductor.Qhov kub tsis zoo coefficient thermal ceramics yog siv los ntsuas qhov kub thiab txias.Tsis tas li ntawd, muaj cov thermal ceramics uas nws resistivity hloov linearly nrog qhov nce ntawm qhov kub thiab txias, thiab Thermal Ceramics uas nws resistivity hloov dua nyob rau hauv ib tug tej yam tseem ceeb kub.Cov yav tas yog siv los tsim cov khoom siv hluav taws xob, yog li nws hu ua fais fab mov Thermal Ceramics.Raws li qhov kub thiab txias, thermal ceramics tau muab faib ua qhov ntsuas kub qis (4 ~ 20K, 20 ~ 80K, 77 ~ 300K, thiab lwm yam), nruab nrab kub (tseem hu ua standardization, - 60 ~ 300 ℃) thiab kub siab (300 ~ 1000 ℃).
Zoo kub coefficient thermistor;Semiconductor ceramics;Ferroelectric ceramics;kev loj hlob
Paub meej: raws li cov ntaub ntawv sau tseg thiab kev paub dhau los hauv kev ua haujlwm, kev tshawb nrhiav kev tsim, kev sim, cov yam ntxwv ntawm cov khoom siv thiab kev siv ntawm PTC ceramics tau piav qhia.
Johnson lub zog, ib qho kev pabcuam ib zaug rau cov neeg siv hluav taws xob hauv ntiaj teb.Jiangxi Johnson Electric Co., Ltd. tsim lub zog insulators, porcelain insulators, iav insulators, composite insulators, kab insulators, ncua kev kawm ntawv insulators, pin insulators, disc insulators, nro insulators, xob laim ntes, disconnectors, transformers, load keyboards, thawv substations, poob fuses, cables thiab fais fab fittings.Txais tos nug.
Cov yam ntxwv ntawm iav insulator
Iav insulator muaj cov yam ntxwv hauv qab no:
(1) Lub zog siv hluav taws xob siab, 1 ~ 2 npaug siab dua li ntawm cov plooj (porcelain insulator).
(2) Qhov kev ua tau zoo yog qhov ruaj khov thiab tsis yooj yim rau kev laus, thiab kev ua haujlwm hluav taws xob siab dua li ntawm cov plooj (porcelain insulator).
(3) Cov txheej txheem ntau lawm yog tsawg, lub voj voog ntau lawm yog luv, nws yooj yim rau kev siv tshuab thiab tsis siv neeg ntau lawm, thiab kev ua haujlwm ntau lawm yog siab.
(4) Vim lub pob tshab ntawm iav insulator, nws yog ib qho yooj yim mus nrhiav tau cov kab nrib pleb me me thiab ntau yam kev puas tsuaj sab hauv lossis kev puas tsuaj thaum lub sijhawm tshuaj xyuas sab nraud.
(5) Yog hais tias muaj ntau yam tsis xws luag nyob rau hauv lub iav lub cev ntawm lub insulator, lub iav yuav cia li tawg, uas yog hu ua "tus kheej tawg".Tom qab lub rwb thaiv tsev tawg lawm, cov seem rauj ntawm lub hau hlau tseem tuav tau qee yam kev siv zog thiab tau dai rau ntawm txoj kab, thiab cov kab tseem tuaj yeem ua haujlwm ntxiv.Thaum tus kws tshuaj xyuas kab tshuaj xyuas cov kab, nws yog ib qho yooj yim mus nrhiav tus kheej tawg insulator thiab hloov lub insulator tshiab nyob rau hauv lub sij hawm.Vim hais tias cov iav insulator muaj cov yam ntxwv ntawm "tus kheej tawg", nws tsis yog qhov tsim nyog los ua qhov kev tiv thaiv kev tiv thaiv ntawm cov insulator hauv cov txheej txheem ntawm kev ua haujlwm, uas ua rau nws yooj yim rau kev khiav lag luam.
(6) Cov iav insulators yog lub teeb hauv qhov hnyav.Vim yog cov txheej txheem tsim khoom thiab lwm yam laj thawj, "tus kheej tawg" tus nqi ntawm iav insulator siab, uas yog qhov tsis zoo ntawm iav insulator.
Hom kev sib xyaw suspension insulator:
hom qauv, hom pa phem resistant, DC hom, spherical yam, aerodynamic hom, hauv av hlau hom, rau overhead contact system ntawm electrified railway.
1. Cov khoom sib xyaw insulator yog tsim los ntawm peb qhov chaw: iav fiber ntau epoxy resin rub tawm pas nrig, silicone roj hmab kaus tiab thiab kho vajtse.Lub kaus mom silicone roj hmab siv cov txheej txheem kev txhaj tshuaj siab, uas daws qhov teeb meem tseem ceeb cuam tshuam rau kev ntseeg tau ntawm cov khoom siv hluav taws xob sib txuas, cuam tshuam hluav taws xob tawg.Cov txheej txheem crimping siab tshaj plaws tau txais kev pom zoo rau kev sib txuas ntawm cov iav rub tawm pas nrig thiab cov fittings, uas yog nruab nrog lub kaw lus tsis siv neeg puv acoustic flaw detection system.Nws muaj lub zog siab, zoo nkauj tsos, ntim me me thiab lub teeb yuag.Cov galvanized fittings tuaj yeem tiv thaiv xeb thiab xeb, thiab tuaj yeem hloov pauv nrog cov porcelain insulators.Cov qauv yog txhim khu kev qha, tsis ua puas lub mandrel, thiab muaj peev xwm muab tag nrho kev ua si rau nws txhua yam muaj zog.
2. Kev ua tau zoo ntawm hluav taws xob thiab kev ua haujlwm siab.Lub tensile thiab flexural zog ntawm epoxy iav rub-tawm pas nrig loaded sab hauv yog 2 zaug siab dua li ntawm cov hlau zoo tib yam thiab 8 ~ 10 npaug siab dua li ntawm high-strength porcelain, uas zoo txhim kho kev ntseeg tau ntawm kev nyab xeeb kev ua haujlwm.
3. Nws muaj kev ua qias tuaj zoo, kev ua qias tuaj zoo thiab muaj kuab paug flashover tsis kam.Nws cov ntub dej tiv taus qhov hluav taws xob thiab cov pa phem tiv thaiv hluav taws xob yog 2 ~ 2.5 npaug ntawm cov plooj (porcelain insulators) nrog tib qhov kev nkag mus deb.Yog tsis muaj kev ntxuav, nws tuaj yeem ua haujlwm nyab xeeb hauv thaj chaw muaj kuab paug hnyav.
4. Cov ntim me me, lub teeb yuag (tsuas yog 1 / 6 ~ 1 / 9 ntawm cov porcelain insulator ntawm tib qib voltage), lub teeb qauv thiab kev thauj mus los yooj yim thiab kev teeb tsa.
5. Silicone roj hmab kaus tiab muaj kev ua tau zoo hydrophobic.Nws tag nrho cov qauv ua kom ntseeg tau tias cov rwb thaiv tsev sab hauv tsis cuam tshuam los ntawm kev ya raws.Tsis tas yuav tsum muaj kev tiv thaiv kev tiv thaiv kev tiv thaiv kev tiv thaiv kev kuaj xyuas thiab tu, uas txo cov haujlwm ntawm kev saib xyuas txhua hnub.
6. Nws muaj kev sib khi zoo thiab muaj zog hluav taws xob tiv thaiv corrosion.Cov khoom siv lub kaus yog tiv taus hluav taws xob thiab cov cim txog tma4 Qib 5, nrog kev laus ua haujlwm zoo, tiv thaiv corrosion thiab kub tsis kam, uas tuaj yeem siv rau thaj tsam ntawm - 40 ℃ ~ - 50 ℃.
7. Nws muaj zog tiv thaiv thiab poob siab tsis kam, zoo tiv thaiv brittleness thiab creep tsis kam, tsis yooj yim rau tawg, siab dabtsi yog khoov thiab torsional lub zog, tuaj yeem tiv taus sab hauv siab, muaj zog tawg-pov thawj, thiab tuaj yeem hloov nrog cov plooj (porcelain) thiab iav insulators.
8. Cov khoom siv hluav taws xob thiab hluav taws xob ntawm cov khoom sib xyaw insulator series zoo dua li cov porcelain insulator, nrog rau kev ua haujlwm loj kev nyab xeeb.Nws yog ib qho khoom kho tshiab rau cov kab hluav taws xob.
Cov yam ntxwv ntawm composite insulator
1. Tus nqi xoom yog tus kheej tawg thiab yooj yim rau kev ntes
Lub compound hanging ntug muaj cov yam ntxwv ntawm xoom tus nqi nws tus kheej tawg.Tsuav nws tau pom nyob rau hauv av los yog nyob rau hauv lub nyoob hoom qav taub, tsis tas yuav nce tus ncej kom pom ib qho ntawm ib qho, uas txo cov kev siv zog ntawm cov neeg ua haujlwm.
Nrog rau kev qhia txog cov khoom lag luam los ntawm cov kab ntau lawm, kev ua haujlwm txhua xyoo tus kheej tawg yog 0.02-0.04%, uas tuaj yeem txuag tau tus nqi txij nkawm ntawm kab.Zoo arc thiab kev co kuj.Hauv kev ua haujlwm, qhov tshiab ntawm cov iav insulator hlawv los ntawm xob laim tseem yog lub iav du thiab muaj cov txheej txheem tiv thaiv kev ntxhov siab sab hauv.Yog li ntawd, nws tseem tuav lub zog rwb thaiv tsev txaus thiab txhua yam muaj zog.
Qhov kev puas tsuaj loj heev tshwm sim los ntawm tus neeg xyuas pib icing tau tshwm sim ntau zaus ntawm 500 kV kab.Qhov sib xyaw suspension insulator tom qab tus neeg xyuas pib galloping tsis muaj attenuation hauv electromechanical kev ua tau zoo.
2. Kev ua haujlwm zoo ntawm tus kheej thiab tsis yooj yim rau kev laus
Raws li qhov kev xav dav dav ntawm lub tuam tsev fais fab, lub iav insulator tsis yooj yim rau cov pa phem thiab yooj yim los ntxuav, thiab iav insulator khiav ntawm kab sab qab teb yog ntxuav tom qab los nag.
Tsis tu ncua coj cov iav insulators ntawm cov kab hauv cov cheeb tsam raug ntsuas los ntsuas qhov kev ua haujlwm ntawm electromechanical tom qab ua haujlwm.Cov ntaub ntawv sau ntau txhiab tus qhia tau hais tias qhov kev ua tau zoo ntawm electromechanical ntawm cov iav insulators tom qab 35 xyoo ntawm kev ua haujlwm yog qhov tseem ceeb raws li lub sijhawm xa khoom, thiab tsis muaj qhov tshwm sim ntawm kev laus.
Lub peev xwm tseem ceeb yog qhov loj, qhov hluav taws xob faib hauv txoj hlua tsis sib xws, thiab qhov dielectric tas li ntawm iav yog 7-8, uas ua rau cov khoom siv hluav taws xob sib xyaw muaj cov peev txheej loj thiab cov hluav taws xob tsis sib xws hauv cov hlua, uas yog qhov tsim nyog rau kev txo qis. voltage los ntawm lub insulator nyob ze ntawm tus neeg xyuas pib sab thiab grounding sab, thiaj li yuav txo tau cov xov tooj cua cuam tshuam, txo corona poob thiab prolong lub neej kev pab cuam ntawm lub iav insulator.Txoj kev ua haujlwm tau ua pov thawj qhov no
Cov yam ntxwv ntawm kev ua tau zoo thiab kev pabcuam ntawm cov khoom siv insulator # kev ua tau zoo ntawm cov khoom siv insulator:
1. Cov ntim me me thiab lub teeb yuag, uas yog kwv yees li 1 / 5 ~ 1 / 9 ntawm tib qhov hluav taws xob qib porcelain insulator, uas yooj yim rau kev thauj mus los thiab kev teeb tsa.
2. Composite insulator muaj lub zog txhua yam, txhim khu kev qha, kev ua haujlwm ruaj khov thiab cov npoo loj rau kev ua haujlwm nyab xeeb, uas muab kev lees paub rau kab thiab kev ua haujlwm zoo.
3. Cov khoom siv insulator muaj kev ua haujlwm zoo tshaj plaws.Silicone roj hmab kaus tiab muaj qhov zoo hydrophobicity thiab kev txav mus los, muaj kuab paug tsis zoo thiab muaj zog tiv thaiv kev ua qias tuaj flashover.Nws tuaj yeem ua haujlwm nyab xeeb hauv thaj chaw muaj kuab paug hnyav yam tsis muaj kev ntxuav phau ntawv thiab tuaj yeem tsis pub dawb los ntawm kev saib xyuas tsis muaj nqi.
4. Cov khoom siv hluav taws xob muaj cov yam ntxwv ntawm cov kua qaub thiab alkali tsis kam, kev kub nyhiab tiv thaiv thiab hluav taws xob tiv thaiv, kev ua haujlwm zoo sealing, thiab tuaj yeem ua kom ntseeg tau tias nws cov rwb thaiv tsev sab hauv tsis cuam tshuam los ntawm ya raws.
5. Cov khoom siv hluav taws xob muaj qhov zoo brittleness tsis kam, muaj zog poob siab thiab tsis muaj kev sib tsoo tawg.
6. Composite insulators yog hloov tau thiab tuaj yeem hloov pauv nrog cov khoom siv plooj (porcelain insulators).
Yuav txiav txim qhov zoo ntawm insulator li cas?
a.Standard rau tsim nyog rwb thaiv tsev kuj
(1) Lub rwb thaiv tsev tiv thaiv ntawm cov rwb thaiv tsev tshiab yuav tsum siab dua lossis sib npaug li 500m Ω.
(2) Lub rwb thaiv tsev tiv thaiv ntawm insulator thaum lub sijhawm ua haujlwm yuav tsum ntau dua lossis sib npaug li 300m Ω.
b.Kev txiav txim txoj cai ntawm insulator deterioration
(1) Yog tias cov rwb thaiv tsev tsis zoo ntawm cov insulator tsawg dua 300m Ω thiab ntau dua 240m Ω, nws tuaj yeem raug txiav txim raws li tus nqi qis.
(2) Yog tias cov rwb thaiv tsev tsis zoo ntawm cov insulator tsawg dua 240m Ω, nws tuaj yeem raug txiav txim tias xoom insulator.
Txoj kev no feem ntau tsis yog siv los ntsuas qhov kev tiv thaiv kev tiv thaiv ntawm cov rwb thaiv tsev sib xyaw.
Suspension insulators yog dav siv nyob rau hauv lub hwj chim system.FRP suspension insulators muaj lub neej ua haujlwm ntev thiab nyiam los ntawm lub zog hluav taws xob.Qhov zoo ntawm suspension insulators hauv kev ua lag luam tsis sib xws.Muaj cov khoom siv hluav taws xob rov ua dua tshiab ntawm kev muag khoom.Nws yog ib qho tsim nyog los sib piv cov khoom thaum yuav khoom ncua kev kawm ntawv insulators.Yog tias koj xav paub txog kev ncua kev tshem tawm insulator los ua ke thiab tau txais cov duab ncua kev cuam tshuam insulator kev twb kev txuas, koj tuaj yeem sab laj nrog Joson lub tuam txhab khoom siv hluav taws xob, cov chaw tsim khoom ntawm cov khoom siv hluav taws xob zoo.Josen fais fab muab cov hluav taws xob hluav taws xob porcelain suspension insulators, 330kV suspension insulators, 500kV suspension insulators, 10kV suspension composite insulators, suspension pollution resistant insulators, normal suspension insulators, disk suspension glass insulators thiab suspension ceramic insulators.
Lub sij hawm xa tuaj: Plaub Hlis-18-2022