Muaj ntau hom hydro generators. Hnub no, cia peb qhia txog lub axial-flow hydro generator kom meej. Daim ntawv thov ntawm axial-flow hydro generator nyob rau hauv xyoo tas los no feem ntau yog kev tsim cov taub dej siab thiab qhov loj. Kev tsim cov turbines axial-flow hauv tsev kuj ceev heev. Muaj ob hom axial-flow paddle turbines ntsia rau hauv Gezhouba hydropower chaw nres tsheb, ib qho muaj lub qhov khiav ntawm 11.3m, uas yog lub qhov khiav ntawm cov turbines zoo sib xws hauv ntiaj teb. Nov yog qhov zoo thiab qhov tsis zoo ntawm nruab nrab axial flow turbine.
Qhov zoo ntawm cov axial flow turbine
Piv nrog Francis turbine, axial-flow turbine muaj cov txiaj ntsig tseem ceeb hauv qab no:
1. Qhov ceev tshwj xeeb siab thiab lub zog zoo. Yog li ntawd, nws qhov ceev thiab qhov ntws ntawm lub tshuab siab dua li Francis turbine. Nyob rau hauv tib lub taub hau thiab cov zis, nws tuaj yeem txo qhov loj ntawm lub tshuab hluav taws xob hydraulic turbine, txo qhov hnyav ntawm lub tshuab thiab txuag kev siv khoom, yog li nws muaj txiaj ntsig zoo rau kev lag luam.
2. Cov duab ntawm qhov chaw thiab qhov roughness ntawm cov hniav khiav ntawm axial-flow turbine yooj yim ua kom tau raws li qhov yuav tsum tau ua hauv kev tsim khoom. Vim tias cov hniav ntawm axial flow propeller turbine tuaj yeem tig, qhov nruab nrab ntawm kev ua haujlwm zoo dua li ntawm Francis turbine. Thaum lub nra thiab lub taub hau hloov pauv, qhov ua haujlwm hloov pauv me ntsis.
3. Cov hniav khiav ntawm axial flow paddle turbine tuaj yeem raug rhuav tshem kom yooj yim rau kev tsim khoom thiab kev thauj mus los.
Yog li ntawd, lub turbine axial-flow tseem ruaj khov hauv qhov ntau thiab tsawg ntawm kev ua haujlwm, muaj kev co tsawg dua, thiab muaj kev ua haujlwm zoo thiab cov zis tawm. Hauv qhov ntau ntawm lub taub dej qis, nws yuav luag hloov Francis turbine. Nyob rau hauv xyoo tas los no, nws tau ua kev loj hlob zoo thiab kev siv dav hauv ib chav muaj peev xwm thiab lub taub dej.
3, Qhov tsis zoo ntawm axial flow turbine
Txawm li cas los xij, lub turbine axial-flow kuj muaj qhov tsis zoo thiab txwv nws qhov kev siv. Nws qhov tsis zoo tseem ceeb yog:
1. Tus naj npawb ntawm cov hniav yog me me thiab cantilever, yog li lub zog tsis zoo thiab tsis tuaj yeem siv rau cov chaw nres tsheb hydropower nruab nrab thiab siab.
2. Vim yog qhov dej ntws loj thiab qhov ceev ntawm lub tshuab, nws muaj qhov siab me dua li Francis turbine nyob rau hauv tib lub taub hau dej, ua rau muaj qhov tob tob thiab kev nqis peev ntau ntawm lub hauv paus chaw tsim hluav taws xob.
Raws li qhov tsis zoo saum toj no ntawm axial-flow turbine, daim ntawv thov taub hau ntawm axial-flow turbine tau txhim kho tas li los ntawm kev siv cov khoom siv tshiab nrog lub zog siab thiab cavitation tiv thaiv hauv kev tsim turbine thiab txhim kho qhov kev ntxhov siab ntawm cov hniav hauv kev tsim. Tam sim no, daim ntawv thov taub hau ntawm axial flow propeller turbine yog 3-90 m, uas tau nkag mus rau thaj chaw ntawm Francis turbine. Piv txwv li, cov zis ntawm * * * ib lub tshuab ntawm txawv teb chaws axial flow propeller turbine yog 181700 kW, lub * * * taub hau yog 88m, thiab lub khiav txoj kab uas hla yog 10.3M. Lub tso zis ib zaug ntawm axial flow propeller turbine tsim nyob rau hauv Suav teb yog 175000 kW, lub * * * taub hau yog 78m, thiab lub txoj kab uas hla ntawm * * * khiav yog 11.3m. Axial flow fixed propeller turbine muaj cov hniav ruaj khov thiab cov qauv yooj yim, tab sis nws tsis tuaj yeem hloov kho rau cov chaw nres tsheb hydropower nrog kev hloov pauv loj hauv lub taub hau dej thiab thauj khoom. Rau cov chaw nres tsheb hydropower loj nrog lub taub hau dej ruaj khov thiab ua haujlwm ua lub hauv paus thauj khoom lossis ntau chav tsev, nws kuj tuaj yeem txiav txim siab tom qab kev sib piv kev lag luam thaum lub zog hluav taws xob raws caij nyoog muaj ntau. Nws qhov dej ntws tau yog 3-50m. Lub cav turbine axial flow propeller feem ntau siv cov cuab yeej ntsug, thiab nws cov txheej txheem ua haujlwm zoo ib yam li Francis turbine. Qhov txawv yog tias thaum qhov hnyav hloov pauv, nws tsis yog tsuas yog tswj kev tig ntawm lub guide vane xwb, tab sis kuj tswj kev tig ntawm cov hniav khiav kom tswj tau qhov ua haujlwm zoo.
Peb kuj tau qhia txog Francis turbine ua ntej lawm. Ntawm cov hydro generators, Francis turbine txawv ntawm axial-flow turbine heev. Piv txwv li, cov qauv ntawm lawv cov khiav yog txawv. Cov hniav ntawm Francis turbine yuav luag sib luag rau lub ncej tseem ceeb, thaum cov axial flow turbine yuav luag perpendicular rau lub ncej tseem ceeb.
Lub sijhawm tshaj tawm: Plaub Hlis-19-2022
