Koyar da Taurari da WVT-12 Vacuum Circuit Breaker

I. Bincike da Tahalilin Fanni

Daga baya 2003, ina yi aiki mai muhimmanci wajen gina alamar fanni na WVT-12 tsohon kungiyar Anhui Longbo. A lokacin, a cikin rukunin kashi na 12kV, tsohon kungiyoyi masu tsawon harsuna suka fi shiga miliyan 98% daga jerin tsohon kungiyoyi. Saboda zan iya jagorancin tashar kashi da kuma ci gaba na tattalin arziki da tattalin gida, tushen mulki da kasa suna nufin tasirin cin kofin kayayyaki don tsohon kungiyoyi masu sahihiyar 12kV.

Fannin WVT an samu ne a farkon Poland a shekarar 1997. Fannin yana cikin tushen da ke da zamanin yanzu, kuma ana yi nasara a kasashe na Sharq Europe, Tsakiyar Europe, Jami'ar Kasashen Yakin Daular (CIS) da wasu wurare. Tun da aiki a cikin tahalilin fanni, an samu cewa tsohon kungiyoyi masu tsawon harsuna suka yi lura zuwa adadin kadan, adadin abubuwan da ba za a biye (ko babban hadin kula), da kuma sahihiyar daidai. Daga cikinsu, an samu fannin cast pole, wanda ya yi amfani da tsari na epoxy resin don haifi da tsarin tsohon kungiyoyi da kafin harsuna a kan fadada, wanda ya ba da nasara a yi waƙoɗi babban hadin kula tun da aiki na tsohon kungiyar, kuma ta shahara da ma'aikatar ginin al'amuran a cikin fanni.

A cikin bayan canza cikakken tushen, tsohon kungiyoyi masu tsawon harsuna a cikin mulki suna da shawarar tushen kamar JP3855-96 Tushen Mafi Girma Don Tsohon Kungiyoyi Masu Tsawon Harsuna na 3.6～40.5kV AC da DL403-91 Tushen Don Bayyana Tsohon Kungiyoyi Masu Tsawon Harsuna na 10～35kV Indoor. A kasa, haka da ba a gane tushen mai mahimmanci da ya danganta da JB3855 na China, amma an yi amfani da tushen IEC 56 AC High-Voltage Circuit Breakers. Ya kamata a lura cewa tushen na China a cikin yadda ake daidaita tsarin dan iska, tsarin dan iska na tsohon kungiyoyi ba da shawarar tattalin arziki, lokaci na zamantakawa na tsohon kungiyoyi ba da shawarar tattalin arziki, da kuma adadin amfani na tattalin karamin kisa, duka su ka ƙarin ko ƙarfin da IEC tushen.

II. Tushen Ginin Al'ama na Fanni
(A) Ingantaccen Tushen Ginin Al'ama

An yi karɓar da bayanin fannin tsohon kungiyoyi masu tsawon harsuna a cikin rukunin kashi na 12kV, kuma an yi rawa da uku abubuwa: ZN28, VEP, da VD4:

• ZN28: Yana da fadada na tsawon karami da kudin kadan, yana cikin abubuwan da ba suka da muhimmiyar, yana daidaita a cikin abubuwan da ba suka da muhimmiyar;

• VD4: Fannin ABB, wanda yake cikin tushen da ke da zamanin yanzu, yana daidaita a cikin abubuwan da suka da muhimmiyar da kuma daidai;

• VEP: Yana daidaita fannin Germany da kuma tushen na mulkin China da kuma tushen na Germany.

Tushen ginin al'aman da na sani shine: imkanin fanni da tushen tsarin kasa suna daidaita tushen VD4, imkanin yanayi suna daidaita tushen VEP da VD4, tare da tsarin kasa mai kudanci, daidai, da kuma kudin kadan mai kyau a tushen.

(B) Tushen Mai Sauran

• Ginin Al'ama na Tushen: Tsarin kasa suna daidaita tushen VD4, VEP, da ZN□-12, da kuma tushen mafi girma da tushen mai mahimmanci suka daidaita tushen VD4 da VEP.

• Mahimmiyar Tushen Mai Tsawon Harsuna: An yi amfani da poles masu amfani. Tun da APG process forming technology, abubuwan da suka da tsarin tsohon kungiyoyi masu tsawon harsuna suka haifi da epoxy resin da kuma an yi amfani da ita don haifi da tushen kadan, yana daidaita tsarin kasa, yana daidaita tsarin dan iska, da kuma yana daidaita tsarin kasa, da kuma yana daidaita tsarin kasa da kuma babban hadin kula.

• Tsarin Tsohon Kungiyoyi Masu Tsawon Harsuna: An samu tushen middle-sealed ceramic vacuum arc extinguish chamber, copper-chromium contacts, da kuma tushen cup-shaped longitudinal magnetic field structure, wanda yana da tsarin kasa mai ƙarin, tsarin dan iska mai ƙarin, da kuma tsarin aiki mai tsawo.

• Yanayi: An kafa tushen kafin da kuma tushen tsawon harsuna, wanda yana da tushen planar-spring energy storage mechanism da tushen manual da kuma electric energy storage functions. An yi amfani da tushen modular design, yana daidaita tsarin kasa, da kuma an yi amfani da tushen secondary half-axis pin mechanism don haifi da tushen closing retention. Tushen energy storage mechanism an yi amfani da tushen turbine and worm deceleration design, da kuma trip coil yana da tushen fully enclosed direct-acting structure, da kuma over-travel adjustment an yi amfani da insulating pull rod don haifi da tushen over-travel adjustment of the switch without removing the main circuit.

• Tushen Contacts: An yi amfani da tushen cup-shaped longitudinal magnetic field contacts. A lokacin da aka yi amfani da tushen, tushen current yana yi amfani da tushen longitudinal magnetic field, wanda yana daidaita tushen arc diffuse and distribute evenly. Idan tushen current yana haifi da zero, tushen insulation strength yana daidaita tushen breaking.

III. Bayanin Fayada Ta'addadi da Jam'iyyar

A ranar 2 ga watan Ferua, 2006, an yi amfani da tushen WVT indoor high-voltage vacuum circuit breaker don haifi da tushen. Ba a yi amfani da tushen quality inspection, an yi amfani da tushen national testing center don haifi da tushen type tests on March 2. A ranar 13 ga watan Afrilu, an samu tushen inspection report, da kuma tushen results met the requirements, satisfying the standards of M2 and C2 circuit breakers.

Wannan abu yana da fannin da ya da tsarin al'amuran da kuma fannin mai al'amuran, tare da tsarin aiki mai tsawo da babban hadin kula, yana daidaita tushen economic losses from electrical maintenance. Yana da tsarin dan iska mai ƙarin, yana daidaita tushen harsh environments, yana daidaita tushen imported products, da kuma yana da kudin kadan mai kyau. Tushen annual domestic market demand yana daidaita miliyan 350,000 units, yana daidaita tushen broad market prospect and good economic and social benefits.