2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Kab lus no yuav muaj cov ntaub ntawv hais txog bushings, lawv hom thiab hom. Kev tsim ntawm ntau hom, hom lawv tus kheej, lawv cov peev txheej thiab lub hom phiaj yuav raug txheeb xyuas kom meej. Lawv qhov zoo nyob rau hauv kev sib piv nrog cov cuab yeej zoo sib xws kuj yuav raug txiav txim siab. Tom qab nyeem tsab xov xwm, koj yuav tsis tsuas kawm paub cov ntaub ntawv dav dav txog bushings, tab sis koj tseem tuaj yeem txiav txim siab cov cim thiab muaj peev xwm paub qhov txawv ntawm ib hom ntawm lwm tus.
Scope ntawm daim ntawv thov ntawm bushings
Dab tsi yog qhov hluav taws xob bushing? Qhov no yog ib qho cuab yeej tshwj xeeb, lub luag haujlwm tseem ceeb uas yog los xyuas kom meej qhov kev sib cais ntawm cov khoom siv hluav taws xob los ntawm cov phab ntsa sab hauv lossis sab nrauv ntawm lub plhaub uas lawv dhau. Lawv kuj tau siv thaum txhim kho switchgears ntawm transformer substations, lawv kuj ua lub luag hauj lwm ntawm cov lus xaus rau tag nrho switchgears.
Post insulators yog tsim los kho cov kab hluav taws xob overhead rau cov tsheb thauj neeg tam sim noswitchgears thiab lwm yam khoom siv hluav taws xob. Nws yog ib qho tsim nyog ntxiv tias bushing-type porcelain insulators, uas tau nrov ua ntej, tseem siv niaj hnub no nrog ntau qhov kev hloov kho.
Cov bushings yog qhov yooj yim heev los siv los txuas cov khoom tawm ntawm cov chaw nres tsheb, los ntawm cov tsev nyob hauv tsev tau siv zog.
Hom insulators
Bushings muab faib ua ob hom. Thawj hom yog cov insulators uas tsim los rau kev teeb tsa sab hauv tsev. Lawv yog siv raws li high-voltage los yog lub tshuab nqus tsev outputs los ntawm transformers ntawm high-voltage Circuit Court breakers. Lub bushing insulator ntawm hom nthuav tawm yog ua los ntawm cov plooj (porcelain), thiab cov pas hlau hlau nyob hauv cov khoom. Nws muaj kev ruaj ntseg nrog flanges ua los ntawm cov hlau, txuas nrog lub hau porcelain thiab nplaum xuab zeb.
Qhov thib ob pom tau raug muab rov qab rau ob qho tib si sab nraum zoov thiab sab hauv tsev. Cov cuab yeej zoo li no muaj cov tav nruab nrab, uas nyob ntawm qhov deb me me ntawm ib leeg. Cov khoom siv no yog tsim los rau kev sib cais los ntawm cov khoom siv tam sim no ntawm kaw switchgear. Hom bushing insulator no yog siv nyob rau hauv mains khiav hauj lwm voltage ntawm 10, 25, 35, 110 kV thiab kev khiav hauj lwm tam sim no los ntawm 630 mus rau 11,000 A.
Tseem muaj lwm hom insulators, tab sis lawv tau tsim los rau lub hom phiaj tshwj xeeb. Cov khoom siv los ntawm hom yog tsim nyog rau kev cais cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob thiab rau kev sib txuas cov neeg siv khoom nrog cov log tsheb mus rau cov kab hluav taws xob overhead. Cov khoom no yog tsimlos ntawm cov ntaub ntawv muaj zog ntxiv, kom lawv cov qauv tsim yog resistant rau dynamic tam sim no loads.
Cov txiaj ntsig ntawm cov insulators
Lub bushing yuav tsum muaj lub neej ua haujlwm ntev, yog li nws muaj cov yam ntxwv hauv qab no:
- siab tiv thaiv kev ua haujlwm hnyav;
- kwv yees me me;
- Y UV resistant;
- siab zog;
- lub neej ua haujlwm ntev;
- kwv yees me me tag nrho qhov ntev.
kev tsim kho IP
IP bushings yuav tsum muaj qhov siab tshaj plaws txhua yam thiab hluav taws xob, yog li cov khoom siv los ntawm lawv tuaj yeem ua raws li hauv qab no:
- polymer;
- porcelain;
- iav tempered.
Lub insulator yog tsim los kom muaj qhov sib zog tawg siab tshaj qhov hluav taws xob flashover. Sab nrauv insulators tas li nyob rau hauv kev cuam tshuam ntawm lwm yam ib puag ncig, yog li lawv nto yog ribbed. Qhov no yog ua tshwj xeeb los txhim kho kev ua tau zoo ntawm cov khoom.
Insulators raws li lawv lub hom phiaj tau muab faib ua bushings, kev txhawb nqa thiab ncua kev kawm, kuj tseem muaj hom kev teeb tsa rau kev tso kawm hauv tsev thiab cov qauv lossis rau kev teeb tsa sab nraum zoov.
Lub chaw kuaj IP-10 feem ntau yog ua los ntawm cov plooj (porcelain). Tus tsim ntawm xws li ib tug insulator yog txiav txim raws li nyob rau hauv voltage thiab hwj chim zaus ntawm lub network. Cov khoom nws tus kheej yog ua los ntawm porcelain. Cov duab cylindrical, ntawm cov axes ntawm cov tav tau nruab, nruj nreem khi nrog cov cement-xuab zeb mortar.
Txoj haujlwm ntawm bushings
Lub hom phiaj tseem ceeb ntawm bushings yog cov rwb thaiv tsev ntawm cov khoom siv tam sim no uas dhau los ntawm cov phab ntsa thiab cov txheej txheem ntawm cov tsev lossis cov qauv. Xws li cov insulators yog ua los ntawm dielectric porcelain. Lub tsev yog tsim nyob rau hauv daim ntawv ntawm ib lub tog raj kheej, nyob rau sab sauv ntawm uas muaj ib tug tam sim no-nqa pas nrig. Hlau flanges raug ntsia rau ntawm nruab nrab ntawm rooj plaub, uas, raws li tau hais los saum toj no, yog tsim los kom ceev cov insulators rau saum npoo.
Lub SP bushing insulator ntawm kev khiav hauj lwm voltage txog li 10 kV yog ua los ntawm cov plooj (porcelain), thiab ntawm kev khiav hauj lwm voltage ntau tshaj 35 kV, cov ntaub ntawv ntaus ntawv yog ua raws li ib tug complex insulating qauv, uas, nyob rau hauv lem, muaj cov rooj plaub plooj (porcelain), daim duab los qhia, daim ntawv dielectric thiab cov roj hloov pauv.
Kev txhim kho bushings
Thaum lub sijhawm teeb tsa, cov bushings sab nraum zoov tau tshuaj xyuas cov kab nrib pleb thiab lwm yam tsis xws luag, vim tias qhov chaw ntawm cov insulators tuaj yeem puas thaum lub sijhawm thauj mus los. Lawv kuj tshuaj xyuas seb lub ntsej muag glaze, uas ua haujlwm rau kev tiv thaiv ntxiv thiab rwb thaiv tsev ntawm cov khoom, tau hnav tawm.
Insulators yuav tsum tau muab tso rau ntawm cov qauv hlau kom ruaj ntseg cov khoom lag luam, nrog rau kev ua haujlwm ntev ntawm cov tsheb thauj mus los lossis cov kab hluav taws xob overhead.
Kev teeb tsa ntawm bushing insulators pib nrog qhov chaw ntawm lub phaj bushing, uas yog tsau raucov qauv los yog tej fittings. Tsis tas li ntawd, cov insulators raug kaw rau ntawm ob sab nrog cov cam khwb cia hlau nrog cov khoom siv hlau uas muaj qhov sib npaug zoo li lub tsheb ciav hlau. Lawv qhov loj me nyob ntawm qhov loj ntawm cov log tsheb ruaj khov. Spacers tau nruab rau ntawm cov khoom lag luam busbar coj nruab nrab ntawm cov busbars ruaj khov.
Kev kos npe tau raug xa rov qab los qhia txog txhua yam khoom lag luam. Piv txwv li, lub bushing insulator IP-10 630 7, 5 UHL1, qhov twg:
- I - insulator;
- P - checkpoint;
- 10 yog qhov kev ua haujlwm ib txwm muaj ntawm cov khoom (kV);
- 630 - ib txwm ua haujlwm tam sim no ntawm cov khoom (A);
- 7, 5 - tawg quab yuam (kN);
- UHL - kev nyab xeeb ntawm kev ua haujlwm;
- 1 - pab pawg.
SP tawg voltage
Qhov tawg ntawm cov plooj (porcelain PI) tuaj yeem sib txawv nyob ntawm qhov tuab ntawm cov plooj (porcelain) txheej. Txawm li cas los xij, qhov tsim ntawm cov insulators yog txiav txim siab los ntawm qhov yuav tsum tau muaj zog txhua yam, tsim flash kev nyuaj siab thiab ntxiv kev ntsuas corona tshem tawm.
Thaum lub 10 kV bushing ua haujlwm, tsis muaj kev ntsuas los tshem tawm tus kabmob corona. Ntawm qhov ntsuas hluav taws xob siab tshaj 35 kV, kev ntsuas raug coj los teeb tsa lub kaus mom ze ntawm tus pas nrig tawm tsam lub flange, tsuas yog nyob rau hauv qhov chaw uas qhov siab tshaj plaws hauv huab cua.
txhawm rau tiv thaiv tus kabmob corona, cov insulators yog tsim yam tsis muaj cua kab noj nyob ib puag ncig tus pas hlau ntsia hauv lub rwb thaiv tsev. Lub sijhawm noQhov saum npoo ntawm IP yog metallized nrog tus pas nrig. Thiab txhawm rau txhawm rau tshem tawm cov tsos mob ntawm cov paug tawm hauv qab ntawm lub hwj chim, qhov chaw hauv qab nws kuj yog metallized thiab ntxiv rau hauv av.
Zoo kawg
Tej zaum txhua tus tau pom lub tshuab hloov pauv uas nws cov kab nyiaj siv ua haujlwm txuas nrog IP. Cov khoom siv no tseem tsim nyog rau kev sib txuas cov xov hlau rau kev teeb tsa ruaj khov, txij li cov xov hlau hluav taws xob tsis tuaj yeem txuas nrog yam tsis muaj cov khoom thaiv.
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