Rashin samun iska na fan rotor gazawar na dakatar da zirga-zirgar iska-kuma a cikin hakar ma'adinai na karkashin kasa, wannan yana nufin hadarin nan take ga rayuwa, samarwa, da bin ka'idoji. Mun maye gurbin sama da 217 rotors a fadin FBD jerin fashe-hujja axial magoya a Shandong da Shanxi coal ma'adinan tun 2022. A kowane hali, tushen dalilin ba kwatsam rushewa - shi ne tsinkaya lalacewa masked ta rashin daidaito saka idanu, kuskure shigarwa, ko jinkirta kiyayewa. Wannan jagorar tana raba abin da muke gani akan rukunin yanar gizon: ba ka'ida ba, amma ainihin matakai, lokaci, da ƙofofin da ke raba amintaccen aiki daga rufewar tilastawa.
Lokacin da Sauyawa Ba Neman Tattaunawa ba - Ba kawai An Shawarar ba
Mai rotor mai ɗaukar iska na ma'adinai yana aiki ƙarƙashin matsananciyar damuwa na inji: ci gaba da jujjuyawa a 1,450-2,980 rpm, fallasa zuwa ƙurar ƙurar kwal, danshi, da hawan keke. Girgiza kai sama da 4.2 mm/s (RMS, ISO 10816-3 Zone C) rashin daidaituwar siginar rotor-ba kawai ɗaukar lalacewa ba. Muna auna wannan yau da kullun ta amfani da vibrometer Laser na hannu yayin mika hannu. Idan rawar jiki ya hau 18% mako-kan-mako *da* nazarin lokaci yana nuna rinjayen mitar 1 ×, maye gurbin rotor yana farawa cikin sa'o'i 72. Jiran fashewar gani ko niƙa mai ji yana gayyatar gazawar bala'i. Rotors a cikin magoya bayan FBD-6.3 (dⅠ) sun gaza tsaka-tsaki bayan sa'o'in aiki 14,200 ba tare da daidaitawa mai ƙarfi ba-har ma tare da “kyakkyawan” karantawa.
Yarjejeniyar Kulawa ta Mataki Hudu Wanda ke Hana 91% na gazawar Rotor
Muna aiwatar da wannan jerin a kowane rukunin ma'adinai inda namu fan rotor na ma'adanin iska raka'a suna aiki:
- Mataki na 1 - Abubuwan bincike kafin cirewa: Kashe wutar lantarki, kulle fita (LOTO), sannan tabbatar da wutar lantarki sifili. Yi amfani da alamar bugun kira don taswirar runout a cibiya da tukwici - wuce 0.12 mm yana nuna nakasar dindindin.
- Mataki na 2 – Sarrafa wargajewa: Cire ruwan wukake da farko-ba cibiya ba. Yi amfani da madaidaitan magudanar wuta (ba kayan aikin tasiri ba) saita zuwa 85 N·m don masu ɗaure M12 akan jerin FBD. Mantawa da wannan matakin yana wargaza cibiya a kan 63% na rotors da aka tuna.
- Mataki na 3 - Daidaitawar daidaitawa: Tsaftace ruwan wukake ultrasonically a cikin pH-tsaka tsaki sauran ƙarfi. Bincika kowane iska don zurfin rami> 0.08 mm (wanda aka auna tare da ma'aunin zurfin dijital). Sauya kowane ruwa tare da zaizayar ƙasa sama da kashi 12% na kauri na asali.
- Mataki na 4 - Ma'auni mai ƙarfi: Ma'auni zuwa darajar G2.5 ta ISO 1940-1. Kar a taɓa tsallake wannan—har ma da sabbin rotors. Gidan gwajin mu ya sami kashi 74% na maye gurbin “off-the-shelf” ya wuce 5.1 mm/s girgiza kafin daidaitawa.
Me Yasa “Kamar Tsoho” Shine Kuskure Mafi Tsada
Wasu masu aiki suna yin odar rotors iri ɗaya don guje wa cancanta. Amma gajiyar kayan abu ba ta juyo ba. Rotor wanda ya yi tafiyar watanni 18 a cikin babban rami mai methane yana da canje-canjen microstructural babu abin dubawa na gani. Yanzu muna ba da duk masu jujjuyawar maye gurbin tare da takaddun takaddun jiyya na zafi da ƙayyadaddun ƙayyadaddun ƙarfin juzu'i (min. 725 MPa yawan amfanin ƙasa don ƙarfe Q345B). Titanium rotors-don gurbataccen muhallin iskar gas-yana buƙatar cikakken tabbaci na ASTM B265. Yin amfani da sassan da ba su da takaddun shaida ba ya ɓoye takaddun shaida na fashewa (GB 3836.1-2021) kuma yana haifar da sake tabbatarwa na wajibi - farashin $12,000+ da 17 kwanakin ragewa.
Ƙimar Duniya ta Gaskiya & Tsare-tsare Tsakanin Lokaci
Maye gurbin injin na'ura mai ba da iska na ma'adanan ba game da farashi ba ne kawai. Ga abin da ainihin ke motsa allura:
- Aiki: 6.5 mafi ƙarancin sa'o'i (ciki har da LOTO, bincike, daidaitawa, sake gwadawa). ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararrun ƙwararru kaɗai—babu masu koyo kan ayyuka masu mahimmanci.
- Hukuncin lokacin hutu: A fitowar tan miliyan 1.2/shekara, kowace sa'a ta layi tana kashe $8,400 a cikin samarwa da aka rasa + $2,100 a cikin hukumcin tsarin iskar iska (kowace ka'idojin aminci na lardin).
- Sassa: Daidaitaccen rotor-karfe: $2,150. Tabbataccen rotor titanium mai tabbatar da fashewa: $9,800. Lokacin jagora: daidaitattun kwanakin kasuwanci 11; 4 kwanaki bayyana (tare da biya kafin lokaci).
- Kudin boye: Sauyawa mara daidaituwa yana haifar da gazawar da ba a kai ba a cikin watanni 3.2 akan matsakaita-ƙara $1,320 a cikin sassan da ba a tsara ba da aiki.
Muna bin waɗannan ma'auni a cikin kwangilolin ma'adinai 47 masu aiki. ROI na shirin maye gurbin rotor kowane awa 12,000? Rage 3.8x a cikin katsewar iskar da ba a tsara ba. Wannan ba kulawa ba - inshorar aiki ne.
Kalma ta ƙarshe: Tsaro yana farawa a Rotor
A fan rotor na ma'adanin iska ba abin amfani ba ne. Ita ce zuciyar motsa jiki na tsarin tallafin rayuwar ku a ƙarƙashin ƙasa. Kowane karatun jijjiga, kowane ƙayyadaddun juzu'i, kowane ma'auni yana wanzuwa saboda wani ya taɓa jira tsayi da yawa-kuma ya biya fiye da kuɗi. Zibo Hongcheng Fan Co., Ltd. yana gina rotors zuwa GB/T 1236 da ka'idojin ISO 5801-amma ma'auni ba su da ma'ana ba tare da aiwatar da horo ba. Fara yau: ja rajistan ayyukan jijjiga na watan da ya gabata. Idan kowane naúrar ya nuna karatu guda uku a jere sama da 3.5 mm/s, tsara maye gurbin yanzu. Ba kwata na gaba ba. Ba bayan dubawa na gaba ba. Yanzu. Domin a cikin samun iska mai ma'adinai, ana auna gefen kuskure a cikin millimeters-da seconds.
