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Chimiro, musimboti uye hunhu hwevacuum circuit breaker

Chimiro, musimboti uye hunhu hwevacuum circuit breaker

Chimiro chevacuum circuit breaker
Chimiro chevacuum circuit breaker chinonyanya kuumbwa nezvikamu zvitatu: vacuum arc yekudzima kamuri, mashandiro ekushandisa, rutsigiro uye zvimwe zvikamu.

1. Vacuum interrupter
Vacuum interrupter, inozivikanwawo sekuti vacuum switch chubhu, ndiyo yakakosha chikamu chevacuum circuit breaker.Basa rayo guru nderekugonesa yepakati uye yakakwirira voltage yedunhu kuti ikurumidze kudzima arc uye kudzvanya ikozvino mushure mekucheka magetsi emagetsi kuburikidza neakanakisa insulation performance yevacuum mupombi, kuitira kudzivirira tsaona netsaona.Vacuum interrupters yakakamurwa kuita girazi vacuum interrupters uye ceramic vacuum interrupters zvinoenderana nemakanda avo.

Vacuum arc yekudzimisa kamuri inonyanya kuumbwa nemhepo yakasimba insulating shell, conductive circuit, shielding system, kubata, mabhero uye zvimwe zvikamu.

1) Air tight insulation system
Iyo air tight insulation system ine air tight insulation shell shell yakagadzirwa negirazi kana Ceramics, inofamba inovhara ndiro inovhara, yakagadziriswa magumo evhavha ndiro, uye simbi isina tsvina.Kuti uve nechokwadi chekusimba kwemhepo pakati pegirazi, ceramics uye simbi, kuwedzera kune yakasimba mashandiro ekuita panguva yekuisa chisimbiso, iyo permeability yezvinhu pachayo inodiwa kuve diki sezvinobvira uye mukati memhepo kuburitswa kunogumira kune zvishoma.Stainless simbi mabhero haingogone chete kutsaura iyo vacuum mamiriro mukati mevacuum arc yekudzima kamuri kubva kune yekunze mamiriro emuchadenga, asi zvakare ita kuti iyo inofamba inobata uye inofamba inofambisa tsvimbo inofamba mukati meiyo yakatarwa kuti ipedze kubatana uye kudzima mashandiro eiyo vacuum switch.

2) Conductive system
Iyo yekuitisa sisitimu yekamuri yekudzimisa arc inosanganisira yakagadziriswa yekuitisa tsvimbo, iyo yakagadziriswa inomhanya arc pamusoro, iyo yakagadziriswa yekubata, iyo inofamba inobata, inofamba inomhanya arc pamusoro uye inofamba inoitisa tsvimbo.Pakati pavo, iyo yakagadziriswa yekufambisa tsvimbo, iyo yakagadziriswa inomhanya arc pamusoro uye yakagadziriswa yakabatana inosanganiswa inonzi inonzi fixed electrode;Kufambisa kubata, kufambisa arc pamusoro uye kufambisa conductive tsvimbo dzinonzi pamwe chete sekufamba electrode.Kana iyo vacuum circuit breaker, vacuum load switch uye vacuum contactor yakaunganidzwa nekamuri yekudzimisa arc yakavharwa, nzira yekushanda inovhara mabhii maviri kuburikidza nekufamba kwemudonzvo wekufambisa, kupedzisa kubatana kwedunhu.Kuti uchengetedze kusangana kwekupokana pakati peaya maviri anobatika sediki sezvingabvira uye akagadzikana, uye kuve neakanaka emagetsi simba kana arc yekudzima kamuri inotakura inoshanduka yakagadzikana ikozvino, iyo vacuum switch inoshongedzerwa negwara rinotungamira kune imwe mugumo weiyo dynamic conductive. tsvimbo, uye seti yezvitubu zvekutsikirira zvinoshandiswa kuchengetedza yakatemerwa kudzvanywa pakati pevaviri vanobatika.Kana iyo vacuum switch ichityora yazvino, iwo maviri anobatika ekamuri yekudzimisa arc anopatsanura uye anogadzira arc pakati pawo kudzamara arc yabuda kana yazvino yayambuka zero, uye kutyora kwedunhu kwapera.

3) Shielding system
Iyo yekudzivirira sisitimu yevacuum arc yekudzimisa kamuri inonyanya kuumbwa nekudzivirira silinda, yekudzivirira chivharo uye zvimwe zvikamu.Iwo makuru mabasa ekudzivirira system ndeaya:
(1) Dzivirira kubatwa kubva pakuburitsa huwandu hukuru hwesimbi mhute uye mvura inodonhedza inopfapfaidza panguva yekumisikidza, kusvibisa mukati memukati wegoko rekudzivirira, zvichiita kuti simba rekudzivirira ridzike kana kupenya.
(2) Kuvandudza nzvimbo yemagetsi kugovera mukati mevacuum interrupter inobatsira kune miniaturization yeganda rekudzivirira revhavha yevhavha, kunyanya kune miniaturization yevacuum interrupter ine high voltage.
(3) Bvisa chikamu chearc simba uye condense arc zvigadzirwa.Kunyanya kana iyo vacuum interrupter inokanganisa pfupi-circuit ikozvino, yakawanda yesimba rinopisa rinogadzirwa nearc rinotorwa nekudzivirira system, iyo inobatsira kuvandudza simba rekugadzirisa dielectric pakati pevanobata.Iyo yakakura huwandu hwezvigadzirwa zvearc zvakanyudzwa neiyo shielding system, iyo yakakura simba rinotora, iro rinoita basa rakanaka mukuwedzera kutyora kugona kwevacuum interrupter.

4) Bata system
Iyo yekubata ndiyo chikamu icho arc inogadzirwa uye kudzima, uye zvinodiwa zvezvinhu uye zvimiro zvakakwirira.
(1) Mashoko okukurukura
Pane zvinotevera zvinodikanwa zvekubatanidza zvinhu:
a.High breaking capacity
Zvinoda kuti conductivity yezvinhu pachayo ihombe, thermal conductivity coefficient iduku, simba rekupisa rakakura, uye simba rekupisa erekitironi rakaderera.
b.High breakdown voltage
High breakdown voltage inotungamira kune yakakwira dielectric kudzoreredza simba, iyo inobatsira kudzima arc.
c.High magetsi kuonda kuramba
Ndiko kuti, inokwanisa kumira kubviswa kwemagetsi arc uye ine simbi shoma evaporation.
d.Kupokana kune fusion welding.
e.Iko kukosha kwepasi-kubvisa ikozvino kunodiwa kuve pasi pe2.5A.
f.Yakaderera gasi kugutsikana
Yakadzika mhepo yemukati ndiyo inodiwa kune zvese zvinoshandiswa mukati mevacuum interrupter.Mhangura, kunyanya, inofanira kunge iine oxygen isina mhangura inobatwa neyakakosha nzira ine yakaderera gasi.Uye alloy yesirivha nemhangura inodiwa pakutengesa.
g.Iyo yekubata zvinhu yevacuum arc yekudzimisa kamuri yedunhu inopwanya kazhinji inotora mhangura chromium alloy, ine mhangura uye chromium accounting ye50% zvakateerana.Pepa remhangura chromium alloy rine ukobvu hwe3mm rinosungirirwa pazvimiro zvekusangana zvekumusoro nepasi zvakateerana.Imwe yasara inodaidzwa kuti contact base, inogona kugadzirwa neoxygen isina mhangura.

(2) Bata chimiro
Iyo yekubatanidza chimiro ine simba rakakura pakupwanya kweiyo arc yekudzima kamuri.Iyo arc yekudzima mhedzisiro inogadzirwa nekushandisa mabatiro ane akasiyana zvimiro zvakasiyana.Kune marudzi matatu eanowanzo shandiswa anobatika: spiral trough type structure contact, cup-shaped structure kusangana ne chute uye cup-shaped structure inosangana ne longitudinal magnetic field, iyo iyo cup-shaped structure inosangana ne longitudinal magnetic field ndiyo huru.

5) Bellows
Iyo bhero yevacuum arc yekudzima kamuri inonyanya kuita basa rekuona kufamba kweiyo electrode inofamba mukati meimwe nharaunda uye kuchengetedza yakakwira vacuum kwenguva yakareba, uye inoshandiswa kuve nechokwadi chekuti vacuum arc yekudzima kamuri ine yakakwira mechanical hupenyu.Mabhero evacuum interrupter chinhu chitete-madziro chakagadzirwa nesimbi isina tsvina ine ukobvu hwe0.1 ~ 0.2mm.Munguva yekuvhura uye yekuvhara nzira yevacuum switch, mabhero ekamuri yekudzimisa arc ari pasi pekuwedzera uye kuputika, uye chikamu chebhero chiri pasi pekunetseka kwakasiyana, saka hupenyu hwebasa hwemabhero hunofanirwa kutsanangurwa zvinoenderana ne kudzokororwa kuwedzera uye kuputika uye kumanikidzwa kwebasa.Hupenyu hwebasa hwemabhero hunoenderana nekupisa kwekupisa kwemamiriro ekushanda.Mushure mekunge vacuum arc yekudzima kamuri yapwanya iyo hombe-pfupi-yedunhu ikozvino, yakasara kupisa kweiyo conductive tsvimbo inotamirwa kune mabhero kusimudza tembiricha yemabhero.Kana tembiricha ichikwira kune imwe nhanho, zvinokonzeresa kuneta kwemavhuvhu uye kukanganisa hupenyu hwebasa hwemhepo.


Nguva yekutumira: Jul-04-2022
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