Zabar dama ATEX centrifugal fan ba game da duba akwati ba ne - game da hana ƙonewa a cikin tsire-tsiren sinadarai masu ƙura, guje wa gazawar bala'i a rumfunan fenti mai ƙarfi, ko tabbatar da ci gaba da kwararar iska inda adadin methane ke shawagi kusa da iyakokin fashewa. Mun ga wuraren da aka keɓance magoya bayan "ATEX-rated" kawai don gano-lokacin ƙaddamarwa-cewa ba a tabbatar da shingen motar don ƙungiyoyin iskar gas na Zone 1 ba, ko kuma kayan injin ɗin ba zai iya jure shaye-shaye mai ɗauke da silica ba. Shi ya sa ba a fara zaɓin da lambobin kasida ba, amma tare da tambayoyin da ba za a iya tattaunawa ba guda uku: Menene ainihin rarraba yanki mai haɗari? Menene iyakar zafin aiki na iska? Kuma waɗanne matsalolin injina ne fan zai jure—lalata, abrasion, hawan keke, ko duka ukun?
Me yasa Takaddar ATEX ta Bukaci Sama da Lakabi
An ATEX centrifugal fan dole ne ya hadu da buƙatu guda biyu masu daidaitawa: matakin kariya na kayan aiki (EPL) wanda ya dace da yankin (misali, Ga don Zone 0, Gb don Zone 1), da daidaituwar ƙungiyar gas (IIC don hydrogen / acetylene, IIB don ethylene, IIA don propane). Amma takaddun shaida kadai baya bada garantin aikin filin. A cikin aikin matatar guda ɗaya, mai fan ya wuce gwajin ATEX a yanayin yanayi na 25°C-amma ya kasa yayin farawa lokacin bazara lokacin da zafin jiki ya wuce T4 (135°C) saboda ƙarancin ƙira na zubar da zafi. Yarda da gaskiya ta duniya tana nufin tabbatar da yanayin zafi * ƙarƙashin ainihin yanayin aiki*, ba kawai yanayin lab ba. Hakanan yana nufin tabbatar da kowane sashi-mai ɗaukar hatimi, hannun riga, har ma da fasteners—an jera su a cikin iyakar takardar shaidar. Muna bincika takaddun shaida na nau'in EC akai-akai akan sassan jiki kafin jigilar kaya. Babu zato. Babu ware.
Zaɓuɓɓukan ƙira waɗanda ke Hana gazawa-Ba kawai Haɗu da ƙa'idodi ba
Makin da aka tabbatar ya gaza idan gininsa ya saba wa muhallinsa. Yi la'akari da waɗannan shawarwarin da aka tabbatar a fagen:
- Abubuwan da ke motsa jiki suna da mahimmanci fiye da ƙimar matsa lamba. Aluminum impellers walƙiya a cikin carbon baƙar fata yanayi-ko da tare da ATEX yarda. Titanium ko bambance-bambancen ƙarfe-karfe suna kawar da wannan haɗarin, amma suna buƙatar daidaitaccen daidaitawa mai ƙarfi don guje wa lalacewa da ke haifar da girgiza a cikin ci gaba da aiki na 24/7.
- Haɗin mota ba toshe-da-wasa bane. Motar da ta tabbatar da ATEX da aka ɗora akan gidan fan ɗin da ba ta da ƙwararrun ta ya ɓata duk yardan taron. Cikakkun naúrar-ciki har da haɗin kai, gadi, da firam ɗin tushe-dole ne a gwada su azaman tsari ɗaya.
- Dabarar hatimi tana bayyana tsawon rai. Daidaitaccen hatimin leɓe yana zubar da ƙura a cikin bearings cikin watanni a cikin sharar shukar siminti. Tsarukan tsabtace matsi mai inganci tare da allurar iskar gas na ƙara tsawon rayuwar sabis ta 3-5 × a cikin manyan yankuna masu ɓarna.
Mun maye gurbin magoya bayan gado sama da 120 a cikin tashoshin wutar lantarki da ake kora kwal inda iskar gas mai gurbataccen iska ya haifar da lalata da sauri na daidaitattun kwandon ƙarfe na carbon. Canzawa zuwa magoya bayan centrifugal mai shiga-biyu tare da casings mai rufaffiyar epoxy da Hastelloy-C276 impellers sun yanke lokacin da ba a shirya ba da kashi 78% — ba tare da lalata mutuncin ATEX ba.
Keɓancewa Ba Abin Luxury ba ne—Hanya ce kaɗai don Daidaita Gaskiya
Magoya bayan ATEX na waje suna kula da yanayin littafin rubutu. Shafukan gaske ba sa bin littattafan karatu. Wurin tsaftar magunguna yana buƙatar samun iska mai tabbatar da fashewa tare da ≤25 dB(A) amo — ba zai yuwu ba tare da madaidaicin radial-tip impellers. Magani: al'ada mai lankwasa titanium impeller, acoustic lilin hadedde a cikin volute, da kai tsaye-drive IE4 motor kawar da bel-drive hadarin haska. Jimlar lokacin bayarwa: makonni 11. Wani abokin ciniki a cikin layin samar da sulfuric acid yana buƙatar juriya ga hazo H₂SO₄ a 80°C yayin da yake riƙe takaddun shaida na Zone 1 IIB. Daidaitaccen suturar epoxy da aka lalata. Mun yi amfani da simintin ƙarfe na simintin gyare-gyaren da aka yi da fluoropolymer tare da kari mai rufin yumbu-da ingantattun abubuwan haɓakar zafin jiki a cikin cikakken kewayon aiki.
Al'ada ba yana nufin jinkiri ba. Mashin ɗinmu na cikin gida, ƙirƙira ƙarfe na ƙarfe, da layukan daidaitawa masu ƙarfi suna ba mu damar canza lissafin lissafin casing, daidaita fitilun mashiga/kanti, haɗa na'urori masu auna zafin jiki, ko ƙara tashar jiragen ruwa mai tsafta-duk ba tare da jinkirin sake tabbatarwa ba, saboda muna aiki a cikin iyakokin ƙira da aka riga aka yarda.
Abin da ke zuwa Bayan Daftari Yana Ƙaddara Amintacce-Ba kawai Biyayya ba
Takaddun bayanai shine layin farko na kariya yayin bincike ko binciken abin da ya faru. Kowanne ATEX centrifugal fan daga Zibo Hongcheng Fan Co., Ltd. jiragen ruwa tare da cikakken fayil na fasaha: takardar shaidar nau'in EC, rahotannin gwaji (firgita, hayaniya, hawan zafin jiki), takaddun shaida, da ƙayyadaddun ƙayyadaddun juzu'i na shigarwa-ba ƙa'idodin ƙa'idodi ba. Mun haɗa da farantin suna QR masu haɗin kai zuwa zane-zane mai sarrafa bita da lissafin kayan gyara. Lokacin da wani shafin yanar gizon petrochemical a Oman yana buƙatar maye gurbin gaggawar tukunyar tukunyar tukunyar jirgi ta tsakiya, ƙungiyar injiniyoyinmu sun sake nazarin kusoshi na tushen su, juriyar juzu'i na ductwork, da haɗin wutar lantarki na gida-sannan kuma an tura madaidaicin sauyawa tare da saitunan VFD da aka riga aka saita da kuma tabbatar da jujjuya lokaci. Babu zato. Babu sake aikin injiniyan filin.
Ba a samun aminci a lokacin ƙaddamarwa. Yana dawwama ta hanyar kiyayewa da ake iya faɗi, sassan da za a iya ganowa, da injiniyoyi waɗanda suka tsaya a cikin ɗakin kulawa yayin farawa. Shi ya sa goyon bayanmu ya haɗa da takamaiman horo na aikace-aikace-ba kawai "yadda ake kunna shi ba," amma "yadda za a iya gano ɓarna a matakin farko a cikin mahalli na Yanki na 2 mai zafi."
