Muaj ntau hom hydroelectric generators. Hnub no, kuv yuav qhia txog cov axial flow hydroelectric generators kom meej. Daim ntawv thov ntawm axial flow turbine generators nyob rau hauv xyoo tas los no feem ntau yog kev tsim cov taub hau siab thiab loj. Cov axial-flow turbines hauv tsev tab tom tsim kho sai. Ob lub axial-flow paddle-type turbines ntsia ntawm Gezhouba Hydropower Station tau tsim. Ib qho ntawm lawv muaj lub cheeb ntawm 11.3 meters, uas tam sim no yog qhov loj tshaj plaws ntawm nws hom hauv ntiaj teb. . Nov yog qhov zoo thiab qhov tsis zoo ntawm axial flow turbines.
Qhov zoo ntawm cov axial flow turbine
Piv nrog Francis turbines, axial flow turbines muaj cov txiaj ntsig tseem ceeb hauv qab no:
1. Kev ceev tshwj xeeb siab thiab cov yam ntxwv zoo ntawm lub zog. Yog li ntawd, nws qhov ceev thiab ntws ntawm lub tshuab siab dua li ntawm Francis turbine. Nyob rau hauv tib lub taub hau dej thiab cov xwm txheej tso zis, nws tuaj yeem txo qhov loj ntawm lub tshuab hluav taws xob turbine, txo qhov hnyav ntawm lub tshuab, thiab txuag kev siv khoom, yog li nws pheej yig. siab.
2. Cov duab ntawm qhov chaw thiab qhov roughness ntawm cov hniav khiav ntawm lub turbine axial flow tuaj yeem ua tau raws li qhov yuav tsum tau ua hauv kev tsim khoom. Vim tias cov hniav ntawm lub turbine axial-flow rotary-paddle tuaj yeem tig, qhov nruab nrab ntawm kev ua haujlwm siab dua li ntawm lub turbine sib xyaw. Thaum lub nra thiab lub taub hau dej hloov pauv, qhov ua haujlwm tsis hloov pauv ntau.
3. Cov hniav khiav ntawm lub turbine axial-flow paddle tuaj yeem rhuav tshem tau, uas yooj yim rau kev tsim khoom thiab kev thauj mus los.
Yog li ntawd, lub turbine axial flow tuaj yeem tswj tau qhov ruaj khov hauv qhov ntau thiab tsawg dua, nrog kev co tsawg dua, thiab kev ua haujlwm zoo dua thiab cov zis tawm. Hauv qhov ntau ntawm lub taub hau qis, nws yuav luag hloov Francis turbine. Nyob rau hauv xyoo tas los no, ob qho tib si hais txog lub peev xwm ib chav thiab kev siv lub taub hau dej, muaj kev txhim kho zoo heev, thiab nws daim ntawv thov kuj dav heev.
Qhov tsis zoo ntawm cov turbine axial flow
Txawm li cas los xij, lub cav turbine axial flow kuj muaj qhov tsis zoo thiab txwv nws qhov kev siv. Qhov tsis zoo tseem ceeb 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 rau hauv cov chaw nres tsheb hydropower nruab nrab thiab siab.
2. Vim yog qhov ntws ntawm lub tshuab loj thiab qhov ceev ntawm lub tshuab siab, nws muaj qhov siab nqus me dua li Francis turbine nyob rau hauv tib lub taub hau, ua rau muaj qhov tob tob rau lub hauv paus ntawm lub chaw tsim hluav taws xob thiab kev nqis peev siab.
Raws li qhov tsis zoo ntawm cov turbine axial flow turbines uas tau hais los saum toj no, cov khoom siv tshiab uas muaj zog tiv thaiv cavitation tau siv rau hauv kev tsim turbine thiab lub zog ntawm cov hniav tau txhim kho hauv kev tsim, yog li ntawd lub taub hau thov ntawm axial flow turbines tau txhim kho tas li. Tam sim no, lub taub hau thov ntawm axial-flow paddle turbine yog 3 txog 90 m, thiab nws tau nkag mus rau thaj chaw ntawm Francis turbine. Piv txwv li, qhov tso zis siab tshaj plaws ntawm ib chav tsev ntawm txawv teb chaws axial-flow paddle turbines yog 181,700 kW, lub taub hau dej siab tshaj plaws yog 88m, thiab lub taub hau khiav yog 10.3m. Qhov tso zis siab tshaj plaws ntawm ib lub tshuab ntawm axial-flow paddle turbine tsim tawm hauv kuv lub tebchaws yog 175,000 kW, lub taub hau dej siab tshaj plaws yog 78m, thiab lub taub hau khiav siab tshaj plaws yog 11.3m. Lub 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. Nws muaj lub taub hau dej ruaj khov thiab ua haujlwm ua lub hauv paus thauj khoom lossis ntau lub chaw nres tsheb fais fab loj. Thaum lub zog ntawm lub caij muaj ntau, kev sib piv nyiaj txiag kuj ua tau. Nws tuaj yeem xav txog. Nws lub taub hau siv tau yog 3-50m. Cov turbines axial-flow paddle feem ntau siv cov khoom siv ntsug. Nws cov txheej txheem ua haujlwm zoo ib yam li Francis turbines. Qhov txawv yog tias thaum lub nra hnyav hloov pauv, nws tsis tsuas yog tswj kev sib hloov ntawm cov vanes qhia. , Thaum tseem kho qhov kev sib hloov ntawm cov hniav khiav kom tswj tau qhov ua haujlwm siab.
Ua ntej, peb kuj tau qhia txog 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 khiav yog txawv. Cov hniav ntawm Francis turbines yuav luag sib luag rau lub ncej tseem ceeb, thaum cov axial flow turbines yuav luag perpendicular rau lub ncej tseem ceeb.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-11-2021
