A matsayin tushen makamashi mai sabuntawa mai saurin amsawa, wutar lantarki yawanci tana taka rawa na ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun wutar lantarki, wanda ke nufin cewa rukunin wutar lantarki galibi suna buƙatar yin aiki a ƙarƙashin yanayin da ya saba wa yanayin ƙira. Ta hanyar nazarin bayanan gwaji da yawa, an nuna cewa lokacin da injin turbine ke aiki a ƙarƙashin yanayin da ba a tsara ba, musamman ma a ƙarƙashin yanayin ɗaukar nauyi, matsa lamba mai ƙarfi zai bayyana a cikin daftarin bututu na injin turbine. Karancin mitar wannan bugun bugun jini zai yi illa ga tsayayyen aiki na injin turbin da amincin naúrar da taron bita. Saboda haka, matsin lamba na daftarin bututu ya damu da masana'antu da masana kimiyya.
Tun lokacin da aka fara samar da matsala ta bugun jini a cikin daftarin bututun injin a cikin 1940, dalilin ya damu kuma masana da yawa sun tattauna. A halin yanzu, masana gabaɗaya sun yi imanin cewa matsa lamba na bututun daftarin aiki a ƙarƙashin yanayin ɗaukar nauyi yana faruwa ne ta hanyar motsi mai karkace a cikin bututun daftarin; kasancewar vortex yana sa rarrabawar matsa lamba a kan sashin giciye na daftarin bututu ba daidai ba, kuma tare da juyawa na bel ɗin vortex, filin matsa lamba na asymmetric shima yana juyawa, yana haifar da matsa lamba don canzawa lokaci-lokaci tare da lokaci, yana haifar da bugun jini. Ana haifar da jujjuyawar magudanar ruwa a mashigin bututu a ƙarƙashin yanayin ɗaukar nauyi (watau, akwai ɓangaren tangential na sauri). Ofishin Jakadancin Amurka ya gudanar da wani bincike na gwaji a kan swirl a cikin daftarin bututu, kuma ya yi nazarin sifar vortex da hali a ƙarƙashin digiri daban-daban. Sakamakon ya nuna cewa kawai lokacin da digiri na swirl ya kai wani matakin, maɗaukakin vortex band zai bayyana a cikin daftarin bututu. Ƙwaƙwalwar helical yana bayyana a ƙarƙashin yanayin nauyin kaya, don haka kawai lokacin da ƙimar dangi (Q / Qd, Qd shine ƙirar ƙirar ƙira) na aikin turbine tsakanin 0.5 da 0.85, matsananciyar matsa lamba zai bayyana a cikin daftarin tube. Matsakaicin babban ɓangaren bugun bugun jini da bel ɗin vortex ke haifarwa yana da ɗan ƙaranci, wanda yayi daidai da sau 0.2 zuwa 0.4 mitar juyawa na mai gudu, kuma ƙarami Q/Qd, mafi girman mitar bugun bugun. Bugu da ƙari, lokacin da cavitation ya faru, kumfa na iska da aka haifar a cikin vortex zai kara girman girman vortex kuma ya sa matsa lamba ya fi tsanani, kuma yawan bugun jini zai canza.
Ƙarƙashin yanayin ɗaukar nauyi, matsa lamba a cikin daftarin bututu na iya haifar da babbar barazana ga kwanciyar hankali da aminci na sashin wutar lantarki. Domin murkushe wannan matsatsin bugun jini, an gabatar da ra'ayoyi da hanyoyi da yawa, kamar sanya fins a bangon daftarin bututu da shiga cikin daftarin bututun matakai biyu ne masu inganci. Nishi et al. sunyi amfani da hanyoyin gwaji da ƙididdigewa don nazarin tasirin fins akan bugun bugun bututu, gami da tasirin nau'ikan fins daban-daban, tasirin adadin fins da matsayi na shigarwa. Sakamakon ya nuna cewa shigar da fins na iya rage girman ƙayyadaddun vortex da rage matsa lamba. Dmitry et al kuma sun gano cewa shigar da fins na iya rage girman bugun bugun jini da 30% zuwa 40%. Samun iska daga tsakiyar rami na babban shaft zuwa bututun daftarin kuma hanya ce mai inganci don murkushe bugun bugun jini. Matsayin eccentricity na vortex. Bugu da kari, Nishi et al. Har ila yau, ya yi ƙoƙari ya ba da daftarin bututu ta ƙananan ramuka a saman fin, kuma ya gano cewa wannan hanya za ta iya dakatar da bugun jini kuma yawan iskar da ake bukata yana da ƙananan lokacin da fin ba zai iya aiki ba.
Lokacin aikawa: Agusta-09-2022
