Kulephera kwa mpweya wabwino wa mgodi kumayimitsa mpweya - komanso migodi yapansi panthaka, zomwe zikutanthauza kuti pachiwopsezo cha moyo, kupanga, ndi kutsata malamulo. Talowa m'malo opitilira 217 rotor kudutsa FBD mafani axial-proof axial fan ku Shandong ndi Shanxi migodi ya malasha kuyambira 2022. Munthawi zonse, choyambitsa sichinali kuwonongeka mwadzidzidzi-zinali zodziwikiratu kuvala zobisika ndi kuyang'anira kosagwirizana, kuyika molakwika, kapena kukonza kochedwa. Bukuli limasokoneza zomwe tikuwona patsamba: osati malingaliro, koma masitepe enieni, nthawi, ndi malire omwe amalekanitsa ntchito yotetezeka ndikuyimitsa mokakamiza.
Pamene Kusintha Sikukambitsirana—Osati Kongolangizidwa
Dongosolo la mine ventilation fan rotor limagwira ntchito pansi pa kupsinjika kwakukulu kwamakina: kuzungulira kosalekeza pa 1,450-2,980 rpm, kukhudzana ndi fumbi la malasha abrasive, chinyezi, ndi njinga zamoto zotentha. Ma spikes ogwedezeka pamwamba pa 4.2 mm/s (RMS, ISO 10816-3 Zone C) amawonetsa kusalinganika kwa rotor - osati kungovala. Timayesa izi tsiku ndi tsiku pogwiritsa ntchito ma laser vibrometer ogwirizira pamanja panthawi yopereka. Ngati kugwedezeka kukukwera 18% sabata-sabata *ndi * kusanthula gawo kukuwonetsa pafupipafupi 1 ×, kusintha kwa rotor kumayamba mkati mwa maola 72. Kudikirira ming'alu yowoneka kapena kugaya momveka kumabweretsa kulephera koopsa. Mafani a ma rotor mu FBD-6.3 (dⅠ) alephera kusuntha pakati pa maola 14,200 ogwirira ntchito popanda kukhazikikanso, ngakhale atawerenga "zabwino".
Protocol ya Maintenance Maintenance Protocol yomwe Imalepheretsa 91% ya Kulephera kwa Rotor
Timakhazikitsa izi patsamba lililonse la mgodi pomwe tili mine mpweya fani rotor mayunitsi amagwira ntchito:
- Gawo 1 - Kuwunika kusanachitike: Tsekani mphamvu, tsekani tag kunja (LOTO), kenako tsimikizirani zero voteji. Gwiritsani ntchito chizindikiro chojambulira kuti mutsimikize kutha kwa nsonga zamtundu ndi tsamba-kupitilira 0.12 mm kukuwonetsa kupunduka kosatha.
- Gawo 2 - Disassembly yoyendetsedwa: Chotsani masamba poyamba-osati malo oyambira. Gwiritsani ntchito ma wrenchi olinganiza (osati zida zamphamvu) zokhazikitsidwa ku 85 N·m pa zomangira za M12 pagulu la FBD. Kuyiwala sitepe iyi kumasokoneza 63% ya ma rotor omwe amakumbukiridwa.
- Gawo 3 - Kukonzanso kolondola: Oyera masamba ultrasonically mu pH-ndale zosungunulira. Yang'anirani foil iliyonse kuti ili ndi kuzama kwa dzenje> 0.08 mm (yoyezedwa ndi geji yakuya ya digito). Bwezerani tsamba lililonse ndi kukokoloka kwa pamwamba kupitirira 12% ya makulidwe oyambirira.
- Gawo 4 - Kusanja kwamphamvu: Balance ku G2.5 giredi pa ISO 1940-1. Osalumpha izi-ngakhale ma rotor atsopano. Labu yathu yoyeserera idapeza 74% ya zosinthira "zopanda shelufu" zidapitilira kugwedezeka kwa 5.1 mm/s musanayambe kusanja.
Chifukwa Chake “Monga Wakale” Ndiwo Cholakwa Chokwera Kwambiri
Ogwiritsa ntchito ena amayitanitsa ma rotor ofanana kuti apewe kuyenerera. Koma kutopa kwakuthupi sikusinthika. Rotor yomwe idayenda miyezi 18 mumsewu wa methane wapamwamba imakhala ndi kusintha kwapang'onopang'ono kopanda mawonekedwe owonera. Tsopano timapereka ma rotor onse okhala ndi ziphaso zotsatirika zowongolera kutentha ndi data yamphamvu yokhazikika ya batch (min. 725 MPa zokolola za Q345B chitsulo). Zozungulira za Titaniyamu—pamalo owononga mpweya—zimafunika kutsimikizira kwathunthu kwa ASTM B265 Giredi 2. Kugwiritsa ntchito magawo omwe sanatsimikizidwe kumalepheretsa chiphaso chophulika (GB 3836.1-2021) ndikuyambitsa kuvomerezedwanso kovomerezeka - kumawononga $12,000+ ndi masiku 17 opuma.
Mtengo Weniweni Padziko Lonse & Kuwonongeka Kwanthawi Yanthawi
Kusintha kozungulira mpweya wabwino wa mgodi sikungotengera gawo lokha. Izi ndi zomwe zimasuntha singano:
- Ntchito: Maola 6.5 osachepera (kuphatikiza LOTO, diagnostics, kusanja, kuyesanso). Akatswiri aluso okha-opanda ophunzira pa ntchito zovuta kwambiri.
- Chilango chanthawi yopuma: Pakutulutsa matani 1.2 miliyoni / chaka, ola lililonse osagwiritsa ntchito intaneti amawononga $8,400 pakupanga kotayika + $2,100 pazilango zamakina opumira mpweya (pa malamulo achitetezo achigawo).
- Magawo: Standard mpweya-zitsulo rotor: $2,150. Rotor yotsimikizika ya titaniyamu yosaphulika: $9,800. Nthawi yotsogolera: 11 ntchito masiku muyezo; 4 masiku kufotokoza (ndi kulipira kale).
- Mtengo wobisika: Kusintha kosalinganika kumayambitsa kulephera kubereka msanga m'miyezi 3.2 pafupifupi-kuwonjezera $1,320 m'zigawo zosakonzekera ndi ntchito.
Timatsata ma metric awa pamakontrakitala 47 amigodi. ROI yosinthira ma rotor okonzedwa maola 12,000 aliwonse? 3.8x kuchepetsa kutsekeka kwa mpweya kosakonzekera. Kumeneko sikukonza—ndi inshuwaransi yogwira ntchito.
Mawu Omaliza: Chitetezo Zimayambira pa Rotor
A mine mpweya fani rotor si chodyedwa. Ndi mtima wa kinetic wa dongosolo lanu lothandizira moyo mobisa. Kuwerenga kulikonse kwa vibration, torque iliyonse, giredi iliyonse yofananira imakhalapo chifukwa wina adadikirira motalika - ndikulipira ndalama zambiri kuposa ndalama. Zibo Hongcheng Fan Co., Ltd. imamanga ma rotor ku miyezo ya GB/T 1236 ndi ISO 5801—koma mfundo sizitanthauza kanthu popanda kuphedwa mwanzeru. Yambani lero: kukoka zipika za mwezi watha. Ngati gawo lililonse likuwonetsa kuwerengera katatu kotsatizana pamwamba pa 3.5 mm / s, sinthani sinthani tsopano. Osati kotala lotsatira. Osati pambuyo kafukufuku wotsatira. Tsopano. Chifukwa chakuti m’kati mwa mpweya wotuluka m’migodi, malire a cholakwika amayezedwa ndi mamilimita—ndi masekondi.
