Mafani apansi panthaka amathandizira kuti mpweya uziyenda pamene miyoyo imadalira. Sizida zosunga zobwezeretsera-ndiwo njira yoyamba yodzitchinjiriza ku utsi, kutentha, ndi kuchuluka kwapoizoni panthawi yadzidzidzi. Takhazikitsa, kuyesa, ndi kuwombera zovuta zimakupiza zapansi panthaka machitidwe muma projekiti 12 a metro ku China ndi Southeast Asia. Pakuwonjezera kwina ku Beijing, wokupiza yemwe adalephera adayambitsa kuchedwa kwa mpweya kwa mphindi 47 panthawi yoyeserera moto - nthawi yokwanira kuti ma CO adutse chitetezo cha 300 ppm. Chochitikacho chinasintha momwe timafotokozera, kuyesa, ndi kutumiza mayunitsi awa.
Chifukwa chiyani mafani a Standard Amalephera Mobisa
Okonda mafakitale ambiri amagwa pansi pamikhalidwe yasitima yapansi panthaka—osati chifukwa chochulukirachulukira, koma chifukwa cha mapangidwe osagwirizana. Kukupiza kwa axial kwanthawi zonse kumatha kusuntha 120,000 m³/h pa 500 Pa static pressure papepala. Koma mobisa? Imayang'anizana ndi chinyezi cha 85% chaka chonse, mpweya wodzaza ndi kloridi pafupi ndi ngalande za m'mphepete mwa nyanja, kugwedezeka kwa masitima apamtunda (mpaka 12 Hz pa 0.8 mm matalikidwe), ndi zero m'mphepete mwa matenthedwe. Tawonapo ma motors akutenthedwa mkati mwa masiku 90 chifukwa kalasi F idanenedwa - koma kutentha kwa ngalande kumagunda 52 ° C nthawi yachilimwe.
Malo enieni olephera sikuyenda kwa mpweya-ndikudalirika pansi pa zovuta zambiri. Zofunikira zitatu zomwe sizingakambirane zimalekanitsa magawo a subway-grade ndi catalogs:
- Chitsimikizo chosaphulika (GB 3836.1-2021) ya madera omwe ali ndi methane kapena malo olowera mabatire
- Kuteteza IP55+ mosalekeza, yokhala ndi zitsulo zosindikizidwa za silikoni ndi zomangira zitsulo zosapanga dzimbiri
- Dynamic balance giredi G2.5 kapena kuposa, zotsimikiziridwa pa 110% ya liwiro lalikulu la ntchito-osati kokha kuthamanga kwake
Popanda zonsezi, kukonzanso kumachepa ndi 60%. Makasitomala m'modzi adalowa m'malo mwa mafani pakatha miyezi 14 iliyonse mpaka asinthane ndi mapangidwe ozungulira axial okhala ndi makhoma apawiri odziyimira pawokha. Nthawi yawo yatsopano: miyezi 47.
FBD Series: Yopangidwira Zowona Zamsewu, Osati Mapepala a Labu
Mndandanda wa FBD (dⅠ) wotsimikizira kuphulika kwa jekeseni wotsutsana ndi axial flow wentilation fan amathetsa zomwe mafani wamba amanyalanyaza: kuwongolera kolowera ndi kuyankha kwakanthawi. Kusonkhana kwake kwa magawo awiri a rotor-zolowera kutsogolo ndi kumbuyo zomwe zimayenda mozungulira-zimapereka 22% yapamwamba kwambiri yokhazikika kusiyana ndi gawo limodzi lofanana ndi 1,800 Pa kukwera kofanana. Zovuta kwambiri, zimakwaniritsa mpweya wonse mkati mwa masekondi 2.3 poyambira. Izi ndizofunikira pamene kuzindikira kwa utsi kumayambitsa mpweya wabwino kusanawoneke kutsika pansi pa mamita 10.
Sitimangotchula zotchulidwa - timazitsimikizira. Chigawo chilichonse cha FBD chimachitika:
- Kuyesa kwa utsi wa mchere wa maola 48 (ISO 9227) pa 5% NaCl concentration
- Kupirira kwa vibration pa 15 g pachimake kuthamanga kwa mizere 10 miliyoni
- Kuyerekezera kothamanga kwa kutentha: ma windings a injini amatenthedwa kufika 180 ° C, kenako anazirala mofulumira kufika -20 ° C - mobwerezabwereza maulendo 200.
Izi sizowonjezera-injiniya. Zimagwirizanitsa zida ndi envelopu yogwiritsira ntchito. Moto wamphangayo ukagunda 600°C, mafani apafupi amayenera kupulumuka kutentha kwanthawi yayitali kuti achotse njira zothawirako. Magawo a FBD adutsa mayeso owonetsa mphindi 90 pa kutentha kwa 750 ° C popanda kupunduka kwamapangidwe.
Kusintha Mwamakonda Sikosankha - Kumafunika ndi Fizikisi
"Off-the-shelf" kulibe kwa mafani apansi panthaka. M'mimba mwake, gradient, kuchuluka kwa masitima apamtunda, ndi mbiri yamoto zimatengera mafani a geometry, osati mabulosha otsatsa. Ngalande ya m'mimba mwake ya 5.8 m yokhala ndi 3% gradient imafunika kupindika kosiyana ndi 4.2 m pagawo lathyathyathya—ngakhale zonse zitafuna 150,000 m³/h.
Timayamba ntchito iliyonse ndi deta yosonkhanitsidwa m'munda-osati zongoganizira. Mainjiniya athu amayezera:
- Kachulukidwe ka zinthu zozungulira (PM₁₀ ndi PM₂.₅) kupitilira maola 72
- Kukhazikika kwa CO₂ ndi NOₓ panthawi ya ntchito yapamwamba
- Kuchuluka kwa madzi apansi panthaka m'malo achipinda cha fan
Zomwe zimayendetsa zisankho zomwe palibe pepala lodziwika bwino lomwe lingathe: kugwiritsa ntchito titanium alloy blades (pakukana kwa chloride), kaya kuyika ma thermocouples mu ma windings a motor motor (kuti atseke molosera), kapena kuphatikiza kulumikizana kwa mabasi a CAN kuti afotokozere zenizeni zenizeni ku SCADA. Tsamba limodzi la Guangzhou Line 11 lidafuna mafani a centrifugal osachita dzimbiri okhala ndi ma casings a Hastelloy C-276 - chifukwa madzi apansi panthaka anali ndi pH ya 3.2. Chitsulo cha kaboni chokhazikika chikanachita dzimbiri m'miyezi 11.
Yang'anani Kupyola Kwa Fan-Yang'anani Padongosolo
Chofanizira njira yapansi panthaka ndichabwino ngati kuphatikiza kwake. Tawonapo mafani apamwamba akulephera chifukwa mabatani okwera amamveka pa 42 Hz - ma frequency omwe amadutsa masitima 8 amagalimoto. Kukonzekera sikunali fan watsopano. Idasinthidwa ma dampers olumikizidwa mu chimango chothandizira ndi mapadi odzipatula okhala ndi kulolerana kwa 0.035 mm.
Chitetezo chenicheni chimachokera ku kuganiza kwadongosolo: mawonekedwe a kayendedwe ka mpweya (pogwiritsa ntchito ANSYS Momveka bwino ndi geometry yeniyeni), chithandizo chamakono (kusunga phokoso pansi pa 85 dBA pamasiteshoni ogwiritsira ntchito), ndi zomangamanga zowonongeka (N+1 kasinthidwe ndi switchover yokha mu <1.2 masekondi). Zibo Hongcheng iliyonse zimakupiza zapansi panthaka zombo zokhala ndi ma curve-slip curve, malipoti osokonekera, komanso chidule cha mayeso a electromagnetic - osati chizindikiro cha CE.
Kudalirika sikutheka mufakitale. Zimatsimikiziridwa mumsewu-tsiku ndi tsiku, kubowola moto pambuyo pobowola moto, zaka khumi pambuyo pa zaka khumi. Ichi ndichifukwa chake timapangira kusintha koipitsitsa, chilimwe chotentha kwambiri, komanso kusokoneza mphamvu kwanthawi yayitali. Chifukwa utsi ukadzadza m'khonde, palibe "zabwino." Pali zomwe zimagwira ntchito.
