1, Self explosion mechanism yegirazi yakadzikama
Iyo insulator yegirazi inodziya girazi, iyo inoratidzirwa nekudzvinyirira kushushikana pamusoro pepamusoro uye kunetseka kunetseka mukati, sezvakaratidzwa mumufananidzo.
Stress stratification yegirazi rakadzikama
Kushungurudzika kwegirazi kunokonzerwa nekushanduka kwekushisa mukugadzirwa kwegirazi.Kana girazi rinenge richidziya kusvika pakunyorova tembiricha (760 ~ 780 ℃) rinotonhora nekukurumidza, simba rekudzima repamusoro pedenga rinodzikira, asi tembiricha yemukati ichiri yakakwira uye iri munzvimbo yekuwedzera, zvichikonzera kuvharika kweiyo shrinkage. yehupamhi hwepamusoro uye kudzvinyirira kudzvinyirira muuso hwepamusoro;Ipapo tembiricha yemukati inodzikira uye inotanga kuderera, asi panguva ino, iyo dhizaini yakaomeswa, zvichikonzera kuvharika kwemukati uye kunetseka kunetseka.Aya marudzi maviri ekumanikidzika akagoverwa zvakafanana mugirazi kusvikira anyatsotonhodzwa uye tembiricha yanyangarika, inova kusagadzikana zvachose.
Kamwe chiyero pakati pekudzvinyirira kwepakati uye kunetseka kwegirazi insulator girazi kwaparadzwa, kutsemuka kuchaitika nekukurumidza pasi pekuita kwekushushikana, izvo zvinozotungamira mukupwanya kwegirazi, ndiko kuti, kuzviputika.
2, Zvinokonzera uye hunhu hwekuzviputika
Izvo zvinokonzeresa girazi insulator self explosion zvinogona kukamurwa kuita zvikamu zviviri: mhando yechigadzirwa uye yekunze yekushanda nharaunda.Muzviitiko chaizvo, pane kazhinji zvikonzero zviviri panguva imwe chete.
a.Zvikonzero zvemhando yechigadzirwa
Chikonzero chikuru ndechekuti mune zvimedu zvetsvina mukati megirazi insulator, uye inonyanya kuzivikanwa ndeye nis particles.Iyo phase transition state yeNIS mukunyunguduka kwegirazi nekunyunguduka haina kukwana.Mushure mekunge insulator yaiswa mukushanda, inofungidzirwa kuti chikamu chekushandura uye kuwedzera kunoitika zvishoma nezvishoma, zvichiita kuti pave nekutsemuka mugirazi.Kana iyo dhayamita yehutsvina hushoma pane imwe kukosha, haigone kubviswa nekutonhora uye kupisa kwekuvhunduka, zvichikonzera yakawandisa kuzviputika mwero wezvidziviriro mukushanda [kuongororwa kwepakati pekuputika kwega kwegirazi insulators ye500kV transmission line Xie. Hongping].Kana zvimedu zvekusachena zviri mukati memukati tensile stress layer yegirazi, mukana wekuzviputika uripamusoro.Nokuti girazi pacharo chinhu chinoputika, chinopesana nekumanikidzika asi kwete kugadzikana, kuparara kwegirazi kunokonzerwa nekunetseka kwekunetseka.
chimiro:
Kuzviputika kunokonzerwa nekusachena kwemukati kwakakwira makore matatu kusati kwaitwa, uye kunozoderera zvishoma nezvishoma mushure mezvo, unova mutemo wakakosha wekutonga chikonzero chekuzviputika.
B) mukana wekuzviputika wega panzvimbo dzakasiyana dzetambo ye insulator yakafanana;
b.Zvikonzero zvekunze
Zvikuru kusvibiswa uye tembiricha musiyano kuchinja.Pasi pechiito chenguva imwe chete chekusvibisa kuunganidza, hunyoro uye munda wemagetsi, iyo inodonha ikozvino pane insulator yepamusoro yakakura kwazvo, zvichikonzera chikamu chebhandi rakaoma.Kana kuparara kwemhepo kukaitika panzvimbo yakaoma yebhandi, iyo arc inogadzirwa inobvisa amburera siketi yegirazi, uye kana kudzika kwecorrosion kwakadzika, zvinokonzeresa kuzviputika.Kana iyo insulator ikarohwa nemheni panguva yemaitiro ari pamusoro, mukana wekuzviputika wegirazi insulator yakabviswa nearc ichawedzera zvakanyanya.Kunyanya kusvibisa ndiyo kiyi, inogona kunge iri nekuda kwekunyanya kuwanda kwemunyu kana kuwanda kwesimbi hupfu muhupfu.
chimiro:
A) zvinogoneka kuti kuzviputika hakusi pachena mumakore mashoma ekutanga ekushanda, asi kunoitika zvakanyanya pane imwe nguva mushure memakore akati wandei ekushanda (kuchinja kukuru munzvimbo dzinosvibisa nzvimbo kunokonzera kuwandisa kusvibiswa);
B) mukana wekuzviputira wega-yepamusoro-voltage yekupedzisira uye yakaderera-voltage kuguma kwetambo ye insulator yakakura kupfuura iyo iri pakati (nzvimbo yemagetsi pa-high-voltage end uye yakaderera-voltage kupera yakasimba, uye creepage yenzvimbo inoitika. kutanga patsoka yesimbi ye insulator apo kusvibiswa kwakanyanya kurema);
C) gumbo resimbi reiyo non self exploding insulator mushongwe imwe chete yakakuvadzwa (arc yemunharaunda inokonzerwa nekuwanda kwekusvibisa kuunganidza kunokonzera kukanganisa kwegirazi pedyo negumbo resimbi), uye kune kuputika kwakanaka kwemuamburera;
Girazi kukuvara pedyo nesimbi tsoka
3, Yakasara ongororo yesando
Mushure mekuputika kwega kwegasi regirazi insulator, amburera disc girazi rinotyoka uye rinopararira kuita sando inosara.Chimiro chegirazi pane yakasara nyundo inogona kupa rubatsiro rwekuongorora chikonzero chekuzviputika.Chimiro uye mhando yakasara sando girazi:
a.Radial
Kune iyo yekuzviputika yakakonzerwa nekukanganisika kumwe chete, nzvimbo yekutanga inogona kuwanikwa nekudzosera kumashure kutsvaga mutswe.Kana iyo yakaputsika girazi slag pane yakasara sando iri muradioactive chimiro, kutsemuka kwayo kunotangira, ndiko kuti, nzvimbo yekutanga yekuzviputika, iri kumusoro kwegirazi chidimbu.Muchiitiko ichi, kuputika kwega kunokonzerwa nemhando yegirazi chidimbu pachayo, senge batching, dissolution process, nezvimwe.
Residual nyundo radial
b.Hove makwapa
Kana iyo yakaputsika girazi slag pane yakasara sando iri muchimiro chezvikero zvehove, uye nzvimbo yekutanga yekuzviputika iri pedyo nepasi pegirazi chikamu padhuze nechivharo chesimbi, pane zviviri zvinogona zvikonzero zvekuzviputika mune ino kesi, izvo ndiko kuti, girazi rakatyoka nekuda kwekuzviputika kwega kwechigadzirwa chakaremara kana simba rekunze, iro rinogona kuve remagetsi kushushikana kana kushushikana kwemagetsi, sekuenderera mberi kwemagetsi spark kurohwa, kuputsika kwezvikamu zvegirazi kunokonzerwa nemagetsi frequency hombe uye kusaenzana kuvuza. ikozvino, etc.
Residual hammer fish scale
c.Mixed
Kana iyo yakatyoka girazi slag pane yakasara sando iripo mune ese hove chiyero uye chimiro cheprojekiti, nzvimbo yekutanga yekuzviputika iri pane amburera siketi yegirazi chidimbu.Muchiitiko ichi, kuzviputika kunogona kukonzerwa nezvose zviri mukati uye kunze.
Residual sando yakasanganiswa mhando
4, Countermeasures
a.Kupinda kwekutonga: iyo mhando yekuwana magirazi insulators inodzorwa kuburikidza nesampling yekuongorora yemakanika kukuvadzwa uye kukwira kwemafungu maitiro ekuita.
b.Composite insulators inoshandiswa munzvimbo dzakasvibiswa zvakanyanya.Kana zvakatemerwa kuti centralized self explosion inokonzerwa nekuwanda kusvibiswa kwekuunganidza, composite insulators inogona kushandiswa kutsiva magirazi insulators.
c.Simbisa kuongorora patrol, uye itisa yakakosha patrol patambo yekutapurirana nenguva mushure memamiriro ekunze akaipa sekurova kwemheni.
d.Chenjerera kune zvekufambisa.Munguva yekuvaka zvivakwa uye kugadziriswa kwekukurumidzira, iyo yakadzikama girazi insulator ichachengetedzwa nezvinhu zvekudzivirira kudzivirira kukuvara.
Parizvino, kudzora kwemhando yegirazi insulators mune yakakura vagadziri vemba yakanaka, uye hazvichadiwi kushandisa magirazi insulators akataurwa munguva yakapfuura mushure mekumira kwehafu yegore.
Nguva yekutumira: Kubvumbi-02-2022