A matsayin tushen makamashi mai sabuntawa cikin sauri, wutar lantarki ta ruwa yawanci tana taka rawar daidaita kololuwa da daidaita mita a cikin tashar wutar lantarki, wanda ke nufin cewa na'urorin wutar lantarki na ruwa galibi suna buƙatar aiki a ƙarƙashin yanayi waɗanda suka bambanta da yanayin ƙira. Ta hanyar nazarin adadi mai yawa na bayanan gwaji, an nuna cewa lokacin da injin turbin ke aiki a ƙarƙashin yanayin da ba na ƙira ba, musamman a ƙarƙashin yanayin ɗaukar kaya na ɗan lokaci, bugun matsin lamba mai ƙarfi zai bayyana a cikin bututun turbin. Ƙananan mitar wannan bugun matsin lamba zai yi mummunan tasiri ga aikin injin turbin da amincin na'urar da bita. Saboda haka, bugun matsin lamba na bututun zato ya kasance abin damuwa ga masana'antu da masana'antu.
Tunda matsalar bugun matsin lamba a cikin bututun da aka yi amfani da shi a cikin injin turbine aka fara gabatar da shi a shekarar 1940, masana da yawa sun damu kuma sun tattauna dalilin. A halin yanzu, masana gabaɗaya sun yi imanin cewa bugun matsin lamba na bututun da aka yi amfani da shi a ƙarƙashin yanayin ɗaukar kaya na ɗan lokaci yana faruwa ne ta hanyar motsi na vortex mai karkace a cikin bututun da aka yi amfani da shi; wanzuwar vortex yana sa rarraba matsin lamba a kan sashin giciye na bututun da aka yi amfani da shi bai daidaita ba, kuma tare da juyawar bel ɗin vortex, filin matsin lamba mara daidaituwa shi ma yana juyawa, yana sa matsin lamba ya canza lokaci-lokaci akan lokaci, yana haifar da bugun matsin lamba. vortex mai karkace yana faruwa ne ta hanyar kwararar juyawa a cikin bututun da aka yi amfani da shi a ƙarƙashin yanayin ɗaukar kaya na ɗan lokaci (watau, akwai ɓangaren gudu mai tangential). Ofishin Maido da Muhalli na Amurka ya gudanar da wani bincike na gwaji kan juyawar da ke cikin bututun da aka yi amfani da shi, kuma ya yi nazarin siffar vortex da ɗabi'arsa a ƙarƙashin digiri daban-daban na juyawa. Sakamakon ya nuna cewa sai lokacin da matakin juyawa ya kai wani mataki, ƙungiyar vortex mai karkace za ta bayyana a cikin bututun da aka yi amfani da shi. Vortex ɗin helical yana bayyana a ƙarƙashin yanayin ɗaukar kaya na ɗan lokaci, don haka sai lokacin da ƙimar kwararar da aka danganta (Q/Qd, Qd shine ƙimar kwararar ma'aunin ƙira) na aikin injin turbine ya kasance tsakanin 0.5 da 0.85, bugun matsin lamba mai tsanani zai bayyana a cikin bututun zayyana. Mitar babban ɓangaren bugun matsin lamba da bel ɗin vortex ya haifar yana da ƙasa kaɗan, wanda yayi daidai da sau 0.2 zuwa 0.4 na juyawar mai gudu, kuma ƙaramin Q/Qd, mafi girman mitar bugun matsin lamba. Bugu da ƙari, lokacin da cavitation ya faru, kumfa iska da aka samar a cikin vortex zai ƙara girman vortex ɗin kuma ya sa bugun matsin lamba ya fi tsanani, kuma mitar bugun matsin lamba ma zai canza.
A ƙarƙashin yanayin ɗaukar kaya na ɗan lokaci, bugun matsin lamba a cikin bututun zamiya na iya zama babbar barazana ga aikin na'urar samar da wutar lantarki mai dorewa da aminci. Domin danne wannan bugun matsin lamba, an gabatar da ra'ayoyi da hanyoyi da yawa, kamar shigar da fin a bango na bututun zamiya da kuma fitar da iska zuwa cikin bututun zamiya ma'auni biyu ne masu tasiri. Nishi da abokan aikinsa sun yi amfani da hanyoyin gwaji da na lambobi don nazarin tasirin fin a kan bugun matsin lamba na bututun zamiya, gami da tasirin nau'ikan fin daban-daban, tasirin adadin fin da matsayin shigarwarsu. Sakamakon ya nuna cewa shigar da fin na iya rage yawan kewayowar vortex da kuma rage bugun matsin lamba. Dmitry da abokan aikinsa sun kuma gano cewa shigar da fin na iya rage girman bugun matsin lamba da kashi 30% zuwa 40%. Samun iska daga tsakiyar ramin babban shaft zuwa bututun zamiya shi ma hanya ce mai tasiri don danne bugun matsin lamba. Matsayin kewayowar vortex. Bugu da ƙari, Nishi da abokan aikinsa. kuma sun yi ƙoƙarin sanya iska ta shiga bututun da ke cikin jirgin ta ƙananan ramuka a saman fin ɗin, kuma sun gano cewa wannan hanyar za ta iya danne bugun matsin lamba kuma yawan iskar da ake buƙata ƙanƙanta ne lokacin da fin ɗin ba zai iya aiki ba.
Lokacin Saƙo: Agusta-09-2022
