Explosion-proof Tsarin injin mitar mitar ba zaɓi ba ne a cikin tsire-tsire masu sinadarai, ma'adinan kwal, ko matatun mai - su ne bambanci tsakanin ci gaba da aiki da rufewar bala'i. Mun ga wurare sun yi asarar sauyi uku na samarwa saboda wani injin fan da ya fashe a lokacin gano iskar gas. Wasu sun maye gurbin daidaitattun VFDs sau biyu a cikin watanni 18-kawai don gano tushen tushen ba kunna software bane ko garkuwar kebul, amma rashin daidaituwa tsakanin ajin rufin mota, ƙimar shinge, da zagayowar ayyuka na ainihi. A Zibo Hongcheng Fan Co., Ltd., mun ƙirƙira fashe-hujja m mitar injuna ba kamar yadda aka gyara ba, amma kamar yadda hadedde airflow kula da nodes-injiniya daga iska zuwa gidaje don lokaci guda yarda da GB 3836.1-2021 (China's Ex Standard), IEC 60079-0, da masana'antu VFD-IE5 kayyade daidaici bukatun kamar 19.
Me yasa daidaitattun Motocin VFD suka gaza a Yankuna masu haɗari-Ko da Takaddun “Ex”
Yawancin masu amfani suna ɗaukar alamar "hujjar fashewa" tana ba da tabbacin aikin VFD mai aminci. Ba ya. Motar da aka ba da izini don yanayin Ex d IIB T4 na iya yin zafi a ƙarƙashin 30 Hz PWM ƙarfin lantarki, ƙasƙantar da rufin Class H da sauri fiye da hasashen yanayin zafi. Mun auna yanayin zafin jiki na rotor 42°C sama da farantin suna a 25 Hz a cikin mahallin rami da aka rufe-isasshen carbonize varnish da jawo kurakuran ƙasa. Mafi muni: nau'ikan raƙuman ruwa marasa sinusoidal suna ƙara hasarar asara a halin yanzu a cikin shingen hana wuta, haɓaka zafin saman sama sama da iyakokin ƙimar T. Wannan shine dalilin da ya sa jerin gwanon motar mu mai tabbatar da fashewa ke farawa tare da ƙwararrun stator windings-Class H insulation * da * ƙarfafa ramukan ramuka masu juriya ga manyan ɗimbin dv/dt-da kuma ɗakunan da aka yi amfani da su zuwa ± 0.05 mm maida hankali don hana igiyoyin ruwa da aka jawo ta hanyar wutar lantarki ta gama gari.
Haɗin Kai na Duniya: Abin da Injiniya Mai Sarrafa Yake Bukatar Sanin
Daidaituwar VFD ba game da magudanar ruwa ba ne - game da tsirar wutar lantarki ne. Matsalolin mu na FBD(DⅠ) masu tabbatar da fashewar injinan mitar mitoci sun haɗa da ingantattun matatun RFI waɗanda aka ƙididdige su don rigakafin haɓakar kV 4 da garkuwar wayoyi na ciki waɗanda aka kore su daga wutar lantarki. Amma haɗin kai yana kasawa sau da yawa a cikin keɓancewa: topology na ƙasa ba daidai ba, igiyoyin ɓoye marasa kariya waɗanda ke tafiya daidai da jagororin mota, ko mitocin jigilar kaya na VFD da aka saita sama da 8 kHz a cikin wurare da aka keɓe inda raƙuman ruwa masu haske ke ƙara ƙarfin ƙarfin lantarki. Muna ba da cikakkun na'urorin ƙaddamarwa-ciki har da ferrite cores, grounding lugs, da 1: 1 keɓe masu canji don da'irar ra'ayi-ba azaman ƙara-kan ba, amma a matsayin wajibai na ƙayyadaddun tsarin. Lokacin da matatar mai a Shandong ta rage lokacin da ba a shirya ba da kashi 73%, canjin ba motar da kanta ba ce. Yana aiwatar da ƙasa mai maki ɗaya da shigar da zaɓin gyaran bugun bugun jini 12 da aka riga aka gwada don yanke THD ƙasa da 5% a tashoshin mota.
Keɓancewa Wanda Baya Rasa Takaddun Shaida
"Shin za ku iya sanya shi mai tabbatar da fashewar * da * lalatawa * da * gudu a yanayin 110 ° C?" Ee-amma kawai idan kayan, sanyaya, da hanyoyin takaddun shaida sun daidaita. Gidajen Titanium suna tsayayya da lalata H₂S amma suna gudanar da zafi mara kyau; muna warware wannan tare da hadedde axial fin tsararru da kuma tilasta-iska ducting cewa kula T3 surface zazzabi ko da a 100% load a 55 ° C na yanayi. Domin desulfurization magoya rike da rigar hayaki gas, mun embed epoxy-rufi tagulla windings *kuma* saka bakin karfe fasteners tare da passivation takaddun shaida-ba kawai sa markings. Kowane rukunin al'ada yana fuskantar gwaji mai cike da ƙonawa a 105% ƙimar ƙarfin lantarki na awanni 72 a cikin ɗakin gwajin mu na Class II Zone 1, tare da saka idanu na thermograph kowane minti 15. Babu gajerun hanyoyi. Babu kayan "daidai". Babu jinkirin sake tabbatarwa.
Zabar Dama Yana nufin Yin Tambayoyi Masu Dama Da Farko
- Menene ainihin mafi ƙarancin mitar aiki? Gudun ƙasa da 20 Hz yana buƙatar sanyaya na musamman-ƙananan samfuran mu masu saurin gudu suna amfani da masu busa na waje tare da iko mai zaman kansa, ba magoya bayan shaft ba waɗanda ke tsayawa a ƙaramin RPM.
- Wadanne masu jituwa ne suka mamaye grid ɗin ku? Idan rukunin yanar gizon ku yana da nauyin murhun wuta mai nauyi, injinan mu sun haɗa da daidaitawar stator laminations don murkushe oda na 5 da na 7.
- Yaya sauri zai sake farawa bayan share kuskure? Samun iska na ma'adinan kwal yana buƙatar farfadowa na ≤3-na biyu-muna haɗa bankunan capacitor waɗanda ke kula da tashin hankali a lokacin ƙananan tashe-tashen hankula.
- A ina ake samun kulawa? Akwatunan tashar mu na zamani suna ba da damar cikakken gwajin juriya ba tare da buɗe haɗin gwiwar wuta ba-mahimmanci lokacin da aikin zafi ya ba da izinin iyakance lokacin shiga.
Ba mu sayar da motoci. Muna ba da tabbacin tabbatar da kwararar iska. Kowane injin mitar mitar da ke tabbatar da fashewa yana barin wurin namu na Zibo tare da rahoton gwajin da za a iya ganowa wanda ke nuna rashin daidaituwa na yanzu (<2%), girman girgiza (<1.8 mm/s RMS), da hauhawar zafin saman ƙasa a ƙarƙashin ƙirar simintin igiyar ruwa ta VFD. Wannan shine yadda dogara ke samun injiniya - ba a yi alkawari ba. Ziyarci https://www.hongchengbangffan.com don takaddun bayanan fasaha, bayanin kula na aikace-aikacen akan VFD-motor, da samun damar kai tsaye ga injiniyoyin aikace-aikacen waɗanda suka ƙayyadad da abubuwan shigarwa sama da 2,100 masu haɗari tun daga 2020.
