Yadda Ake Magance Gajerun Matsala ta Volvo Diesel Generator Set

Saitin janareta na diesel na Volvo ba kasafai suke samun matsalar gajeriyar kewayawa yayin amfani ba.Menene manyan dalilai da kuma yadda za a warware?Mai samar da janareta 100KW ya raba tare da ku.

1. Halayen gajeriyar kewayawa kwatsam.

A cikin hali na wani tsayayye-jihar short-circuit, saboda da babban synchronous reactance, da tsayayye-jihar short-circuit halin yanzu ba babba, kuma a cikin hali na wani kwatsam short-da'awa, saboda super-transient reactance iyakancewa. halin yanzu ƙarami ne kuma yana ƙunshe da ɓangaren kai tsaye, gajeriyar gajeriyar kewayawa kwatsam tana da girma , Ƙimar mafi girman sa na iya kaiwa fiye da sau goma ƙimar halin yanzu.

Tare da fitowar wannan inrush halin yanzu, windings na mota za a fuskanci wani babban tasiri electromagnetic karfi, wanda zai iya nakasu da windings har ma lalata rufi na windings.

A cikin aiwatar da gajeriyar kewayawa kwatsam, motar tana fuskantar ƙaƙƙarfan juzu'i mai ƙarfi, kuma rawar jiki na iya faruwa.

The stator da na'ura mai juyi windings na mota suna da overvoltage.

2. Halayen abubuwan mamaki na zahiri a cikin janareta a lokacin gajeriyar kewayawa kwatsam.

A cikin yanayin gajeriyar da'ira mai tsayi-jihar, armature halin yanzu yana dawwama, kuma madaidaicin ƙarfin magnetomotive mai ƙarfi shine tsayin juzu'i mai jujjuyawa filin maganadisu yana jujjuyawa a saurin daidaitawa, don haka ba zai haifar da ƙarfin lantarki a cikin injin na'ura mai juyi ba kuma ya haifar da ƙarfi. halin yanzu.Daga dangantakar da ke yanzu Duba, yana daidai da yanayin budewar na'urar.

Lokacin da gajeriyar da'irar ba zato ba tsammani ta faru, girman ƙwanƙwasa na yanzu yana canzawa, kuma girman filin maganadisu daidai yake yana canzawa.Saboda haka, na'ura mai ba da wutar lantarki yana aiki tsakanin stator da rotor, wanda ke haifar da damar wutar lantarki da kuma halin yanzu a cikin motsi na rotor, sa'an nan kuma yana rinjayar stator windings.Daga mahangar dangantakar lantarki, canjin matsakaicin halin yanzu yana daidai da yanayin gajeriyar da'ira na kwatsam na gidan wuta.

A daidai lokacin da ake aikin samar da wutar lantarki na Volvo dizal janareta, ba zato ba tsammani na'urorin lantarki sun yi gajeriyar kewayawa, sai wani katon kwallon wuta ya bayyana, wanda ya sa wutar janareta da mitar ta bace, kuma injin dizal ya sake tashi da sauri, sai kuma janareta. ya kasa kafa wutar lantarki.

Binciken gazawa:

Bayan mai aiki ko mai kulawa ya sami irin wannan laifin, yakamata su fara bincika fis ɗin motsa jiki, sannan su bincika stator, exciter da sassan sarrafa janareta.Sai dai bayan tabbatar da cewa babu lalacewa za a iya fara injin dizal.Idan janareta ba ya samar da wutar lantarki, ya kamata a duba ragowar ƙarfin magnetization na exciter.

Dalilin laifuffuka:

(1) Akwai buɗaɗɗen kewayawa ko gajeriyar kewayawa a cikin abin motsa jiki.

(2) The excitation fuse a bude yake.

(3) Rushewar bututu na biyu.

(4) Akwai gajeriyar da'ira ko buɗaɗɗen da'ira a cikin injin reactor.

(5) Ragowar maganadisu na exciter ya ɓace.

Hanyar magance matsala:

Sashin sarrafawa na wannan saitin janareta na dizal yana ɗaukar ƙa'idar haɓakawa ta atomatik ta atomatik, don haka lokacin da za a magance wannan nau'in kuskuren, ya zama dole a fahimci ka'idar lokaci fili excitation atomatik tsarin wutar lantarki da abun da ke ciki da kuma rawar kowane tsarin tsarin. sa'an nan kuma bi matakai daga sauƙi zuwa ka'idar dubawa mai rikitarwa.

(1) Duba fis ɗin kuma gano cewa an busa fis ɗin.Duba ko sassan da ke cikin akwatin sarrafawa sun kone.Yayin binciken, an gano cewa ƙayyadaddun bututu biyu na yanzu sun ƙone.

(2) Yi amfani da multimeter don auna diodes masu gyara guda 6, kuma ba a sami rashin daidaituwa ba daga sakamakon gwajin.

(3) Yi amfani da multimeter don gwada juriya na exciter, kuma ma'auni na juriya shine 3.5Ω, wanda ya nuna cewa iska na ciki na exciter ya lalace (juriya ta al'ada game da 0.5Ω).

(4) Bayan maye gurbin bututu mai iyakancewa na yanzu na biyu da fuse, lokacin da injin dizal ya tashi zuwa ƙimar ƙimar, janareta ba zai samar da wutar lantarki ba.

Wannan yana nuna cewa kuskuren na iya zama cewa wutar lantarki na ciki na remanence na exciter ya yi ƙasa sosai (a cikin tsarin samar da wutar lantarki na yau da kullum, kayan aikin lantarki ba zato ba tsammani da gajeren lokaci da babban ƙwallon wuta ya bayyana, wanda zai haifar da wutar lantarki na ciki na exciter. a bace.

(5) Bayan magnetizing da exciter da baturi, fara da dizal engine zuwa rated gudun, da janareta zai fara samar da wutar lantarki da kuma cika kayyade bukatun.

Idan kuna sha'awar Volvo dizal janareta , tuntuɓi kamfanin Dingbo Power ta imel dingbo@dieselgeneratortech.com.