Zabar dama Nau'in fan ba game da daidaita lambar kasida da farantin suna ba. Yana da game da warware matsala ta gaske — motsa iska don tsayayya, sarrafa hayaki mai lalacewa, tsira da rafukan shaye-shaye na digiri 200, ko kiyaye ma'adinan gawayi a ƙarƙashin yanayin haɗarin fashewa. Mun yi girma, gwadawa, kuma mun ba da izini sama da magoya bayan tsakiya 1,200 tun daga 2020-kuma a kowane yanayi, nau'in da ba daidai ba ya haifar da jinkiri, rashin daidaituwar aminci, ko gazawar da wuri.
Me yasa "Nau'i" ya fi girma ko sauri
Mai 9-19 mai matsananciyar matsa lamba centrifugal abin hurawa yana motsa iska daban fiye da mai fan mai shiga-shiga-dual-har ma da RPM iri ɗaya da matsatsin tsaye. Bambancin ya ta'allaka ne a cikin lissafi na impeller, ƙirar casing, da hanyar kwararar iska. Na'urori masu lanƙwasa a baya suna ɗaukar iskar hayaƙi mai ƙura ba tare da toshewa ba. Raka'a masu lanƙwasa gaba suna isar da babban ƙara a ƙaramin matsa lamba-amma sun gaza da sauri a cikin mahalli masu ɓarna. Radial-tip impellers suna zaune a tsakanin su: matsakaicin inganci, babban juriya ga ɓarna, da sauƙi na inji wanda ke da mahimmanci yayin kiyayewa a cikin wuraren kiln mai nisa.
Mun taɓa maye gurbin fan mai lankwasa gaba a cikin layin rini na yadi tare da ƙirar baya-baya. Naúrar ta asali ta ɗauki watanni 4. Sabuwar ya yi watanni 37 - babu wanda zai maye gurbinsa, babu zamewar bel, babu faɗuwar iska. Me yasa? Saboda aikace-aikacen ya buƙaci ƙananan tashin hankali, ba matsakaicin CFM ba. Wannan shine ka'ida ta farko: daidaita da nau'in zuwa ga halayen iska, ba kawai tsarin duct ba.
The Four Core Centrifugal Fan Types—And Where They Fail
Masu amfani da masana'antu ba sa buƙatar nau'ikan ilimi. Suna buƙatar hikimar yanke shawara. Ga abin da ke aiki-da kuma inda kowane nau'in ya rushe:
- Magoya bayan-mai lankwasa (BC).: Mafi kyau don tsayin daka, zafi mai zafi, ko sabis na lalata-kamar rijiyar lalata ko iska ta farko. Wuraren ƙwanƙwasa suna karkata daga juyawa. Ƙarfin inganci ya kai 82-87%. Amma suna buƙatar daidaitaccen daidaita mashigai; aikin bututun da ba daidai ba yana haifar da girgizar da ke fasa gidaje. Samfurin mu na BC (misali, bambance-bambancen rigakafin lalata tare da kwanon rufin FRP) sun haɗa da mazugi masu shigar da laser masu daidaitawa a matsayin ma'auni.
- Magoya bayan masu lankwasa (FC).: Karamin, shuru, da ƙarar girma a ƙananan juriya - madaidaicin iskar kayan shafa na HVAC ko sake zagayawa cikin ɗaki mai tsabta. Amma suna tsayawa cikin sauƙi sama da 150 Pa a tsaye matsa lamba. Mun ga raka'a FC guda uku sun gaza a cikin layukan dawo da sinadarin shuka saboda masu aiki sun yi watsi da matsi mai tsayin tsayi. Ba a gina su don juriya mai canzawa ba.
- Magoya bayan Radial-tip (RT).: Dawakan aiki na ƙura, ɗanɗano, ko aiki mai ƙazanta - iskar ma'adinai, sanyaya wuri mai sanyi, shayewar kiln rotary. Ruwan wukake suna miƙewa kai tsaye, suna ƙin ginawa. Ana siyar da ƙarancin inganci (72-78%) don dogaro. A cikin aikace-aikacen sanyaya na abokin ciniki na ƙarfe ɗaya, masu sha'awar RT sun yanke lokacin da ba a shirya su ba da kashi 63% a madadin BC.
- Magoya bayan centrifugal mai shigowa mai shiga biyu: Biyu impellers a daya shaft, jawo iska daga bangarorin biyu. Yana isar da madaidaicin kwarara ba tare da asymmetry ba. Mahimmanci inda sarari yake da ƙarfi amma dole ne kwararar iska ta tsaya tsayin daka-kamar tashoshin samun iska na rami ko tsarin sharar hayaki mai hawa rufin. Koyaya, suna buƙatar haɓaka tushe mai ƙarfi. Canjin tushe na mm 2 ya haifar da resonance a cikin wani aikin kwanan nan har sai mun ƙara fakitin anka mai juriya.
Abin da Catalog ba zai gaya muku ba
Wasu na iya jayayya cewa zaɓin abu yana haifar da nau'in impeller. Amma mun ga magoya bayan titanium tare da cikakkiyar juriya na lalata sun gaza saboda mai lankwasa na baya baya iya ɗaukar nauyin tokar gardawa. Nau'in yana bayyana ilimin lissafi. Material yana bayyana taga rayuwa.
Gaskiya guda uku masu wuyar gaske daga bayanan filin:
- Matsi mai lankwasa karya. Mai fan da aka ƙididdige “12 kPa @ 25,000 m³/h” yana ɗaukar ingantattun yanayin shiga. Gishiri na bututu na duniya na ainihi, dampers, da masu tacewa suna sauke aikin gaske da kashi 12-18%. Koyaushe gwada a matakin tsarin-ba kawai fan-kawai ba.
- Takaddun shaida mai tabbatar da fashewa (misali, dⅠ don ma'adinan kwal) ya shafi cikakken taron-ba kawai motar ba. Motar bokan da aka kulle zuwa gidan da ba a tabbatar da shi ba ya ɓata yarda. Haɗin tsarin mu na FBD ya haɗa da share fage mai jure walƙiya da tsayayyen hanyoyin da aka tabbatar da GB 3836.1.
- Daidaitaccen daidaitawa ba na zaɓi ba ne. Magoya bayan BC marasa daidaituwa suna rawar jiki a 1,450 RPM. A 2,900 RPM, wannan rashin daidaituwa iri ɗaya yana ninka ƙarfi sau huɗu. Kowane fan na centrifugal na Hongcheng yana fuskantar ma'auni na ISO 1940 G2.5 - aunawa, ba zato ba.
Yadda Ake Zaba—Jerin Binciken Filin Minti Biyar
Kafin ka buɗa takamaiman takarda, amsa waɗannan tambayoyi biyar:
- Menene matsakaicin matsa lamba mai tsayi— ba kololuwa ba, ba ka’ida ba? Auna shi da manometer a mashigar fan, ƙarƙashin cikakken kaya.
- Shin tashar iska ta ƙunshi abrasives, danshi, ko sinadarai? Idan eh, kawar da mai lankwasa gaba. Ba da fifikon radial-tip ko mai lankwasa baya tare da suturar kariya.
- Shin takurawa sarari? Dual-inlet yana adana sawun ƙafa amma yana buƙatar tsayayyen tsari. Mai shiga guda ɗaya tare da mazugi mai tsayi na iya zama mafi sauƙi.
- Masu aiki za su daidaita kwarara akai-akai? Hannun masu lanƙwasa a baya suna murƙushewa. Gaba-mai lankwasa yana ƙaruwa mara tabbas ƙasa da 60% gudun.
- Menene kudin gazawa? Kashewa a cikin gidan tukunyar jirgi yana kashe $ 18,000 / awa. Biyan gaba don mai lankwasa baya + hadedde thermal monitoring — ba daga baya don gyaran gaggawa ba.
Nau'in fan na Centrifugal ba sassa ne masu musanya ba. An ƙirƙira su da martani ga ƙuntatawar jiki. Zaɓi nau'in da ke mutunta iskar ku, yanayin ku, da maƙasudin lokacinku-ba wanda ke da ƙasida mafi kyawu ba.
