Muaj ntau ntau hom hydroelectric generators.Hnub no, kuv yuav qhia txog cov axial flow hydroelectric generators kom ntxaws.Daim ntawv thov ntawm axial flow turbine generators nyob rau hauv xyoo tas los no tsuas yog kev loj hlob ntawm lub taub hau siab thiab loj loj.Hauv tsev axial-flow turbines tab tom txhim kho sai.Ob lub axial-flow paddle-type turbines tau teeb tsa ntawm Gezhouba Hydropower Station tau tsim.Ib tug ntawm lawv muaj txoj kab uas hla ntawm 11.3 meters, uas yog tam sim no loj tshaj plaws ntawm nws hom nyob rau hauv lub ntiaj teb no..Ntawm no yog qhov zoo thiab qhov tsis zoo ntawm axial flow turbines.
Qhov zoo ntawm axial flow turbine
Piv nrog Francis turbines, axial flow turbines muaj qhov zoo hauv qab no:
1. High precision ceev thiab zoo zog yam ntxwv.Yog li ntawd, nws chav tsev ceev thiab chav khiav yog siab dua li ntawm Francis turbine.Nyob rau hauv tib lub taub hau dej thiab cov zis, nws tuaj yeem txo qhov loj ntawm lub tshuab hluav taws xob turbine, txo qhov hnyav ntawm chav tsev, thiab txuag cov khoom siv, yog li nws yog kev lag luam.siab.
2. Cov duab thiab qhov roughness ntawm cov hniav ntawm cov axial flow turbine tuaj yeem ua tau raws li qhov yuav tsum tau ua hauv kev tsim khoom.Vim tias cov hniav ntawm axial-flow rotary-paddle turbine tuaj yeem tig, qhov nruab nrab ntawm qhov ua tau zoo yog siab dua li ntawm cov sib xyaw-flow turbine.Thaum lub load thiab lub taub hau dej hloov, qhov ua tau zoo tsis hloov ntau.
3. Cov hniav khiav ntawm axial-flow paddle turbine tuaj yeem raug tshem tawm, uas yooj yim rau kev tsim khoom thiab kev thauj mus los.
Yog li ntawd, axial flow turbine tuaj yeem tswj kev ruaj ntseg hauv kev ua haujlwm loj dua, nrog kev vibration tsawg dua, thiab kev ua haujlwm siab dua thiab tso zis ntau dua.Nyob rau hauv qis-head range, nws yuav luag hloov lub Francis turbine.Nyob rau hauv xyoo tsis ntev los no, ob qho tib si nyob rau hauv cov nqe lus ntawm ib chav tsev muaj peev xwm thiab siv lub taub hau dej, muaj ib tug zoo txoj kev loj hlob, thiab nws daim ntawv thov kuj dav heev.
Disadvantages ntawm axial flow turbine
Txawm li cas los xij, axial flow turbine kuj muaj qhov tsis txaus thiab txwv nws qhov kev thov.Lub ntsiab shortcomings yog:
1. Tus naj npawb ntawm cov hniav yog me me, thiab nws yog cantilever, yog li lub zog tsis zoo, thiab nws tsis tuaj yeem siv nyob rau hauv nruab nrab thiab siab lub taub hau hydropower chaw nres tsheb.
2. Vim tias chav tsev loj txaus thiab siab chav tsev ceev, nws muaj qhov siab me me dua li ntawm Francis turbine nyob rau hauv tib lub taub hau, uas ua rau muaj kev khawb loj hauv qhov tob rau lub hauv paus ntawm lub chaw nres tsheb fais fab thiab kev nqis peev uas tseem ceeb heev.
Raws li cov saum toj no-hais shortcomings ntawm axial txaus turbines, high-strength anti-cavitation cov ntaub ntawv tshiab yog siv nyob rau hauv turbine manufacturing thiab lub zog ntawm cov hniav yog txhim kho nyob rau hauv tsim, thiaj li hais tias daim ntawv thov lub taub hau ntawm axial txaus turbines yog tsis tu ncua txhim kho.Tam sim no, daim ntawv thov lub taub hau ntawm axial-flow paddle turbine yog 3 txog 90 m, thiab nws tau nkag mus rau thaj tsam ntawm Francis turbine.Piv txwv li, qhov siab tshaj plaws ib leeg tso tawm ntawm txawv teb chaws axial-flow paddle turbines yog 181,700 kW, lub taub hau dej siab tshaj plaws yog 88m, thiab txoj kab uas hla yog 10.3m.Qhov siab tshaj plaws ib leeg-tshuab tso zis ntawm axial-flow paddle turbine tsim nyob rau hauv kuv lub teb chaws yog 175,000 kW, lub taub hau dej siab tshaj plaws yog 78m, thiab qhov siab tshaj plaws khiav txoj kab uas hla yog 11.3m.Lub axial-flow fixed-propeller turbine tau kho cov hniav thiab cov qauv yooj yim, tab sis nws tsis tuaj yeem hloov mus rau cov chaw nres tsheb hydropower nrog kev hloov pauv loj hauv dej taub hau thiab thauj khoom.Nws muaj lub taub hau dej ruaj khov thiab ua haujlwm raws li lub hauv paus thauj khoom lossis chaw nres tsheb ntau lub zog loj.Thaum lub caij muaj hwj chim ntau, kev sib piv kev lag luam kuj tseem ua tau.Nws tuaj yeem txiav txim siab.Nws lub taub hau siv tau yog 3-50m.Axial-flow paddle turbines feem ntau siv cov khoom siv ntsug.Nws cov txheej txheem ua haujlwm yog qhov pib zoo ib yam li ntawm Francis turbines.Qhov txawv yog hais tias thaum lub load hloov, nws tsis tsuas yog tswj cov kev sib hloov ntawm cov lus qhia vanes., Thaum tseem kho qhov kev sib hloov ntawm cov hniav khiav kom muaj kev ua haujlwm siab.
Ua ntej, peb kuj tau qhia Francis turbines.Ntawm cov turbine generators, tseem muaj qhov sib txawv loj ntawm Francis turbines thiab axial flow turbines.Piv txwv li, cov qauv ntawm lawv cov neeg khiav dej num txawv.Cov hniav ntawm Francis turbines yuav luag sib npaug mus rau lub ntsiab ncej, thaum lub axial ntws turbines yuav luag perpendicular mus rau lub ntsiab ncej.
Post lub sij hawm: Nov-11-2021
