Raws li peb txhua tus paub, dej turbine generator teeb yog qhov tseem ceeb thiab cov khoom siv tseem ceeb ntawm chaw nres tsheb hydropower.Yog li ntawd, nws yog ib qho tseem ceeb tshwj xeeb los xyuas kom meej kev ruaj ntseg ntawm tag nrho cov hydraulic turbine unit.Muaj ntau yam cuam tshuam rau kev ruaj ntseg ntawm hydraulic turbine unit, uas tau muaj txij li thaum tsim tag nrho hydraulic turbine unit.
Nyob rau hauv tag nrho cov tsim ntawm hydraulic turbine unit, lub zog ntawm hydraulic tsim yog me me.Thaum lub chav dej turbine ua haujlwm nyob rau hauv ib txwm muaj, cov dej ntws ntawm lub qhov hluav taws xob khiav ntawm chav tsev yuav ntws mus ntxiv, thiab cov dej ntws ntawm qhov hluav taws xob khiav yuav tsis tig.Thaum lub turbine tsis nyob rau hauv lub siab ua hauj lwm lub xeev, qhov khiav ntawm lub qhov hluav taws xob khiav yuav maj mam tsim ib ncig ndlwg nyob rau hauv lub turbine cua ntsawj ntshab raj.Thaum lub turbine qis dua 40 ~ 70% ib nrab ntawm lub taub hau qis, qhov ntws ntawm lub qhov hluav taws xob khiav yuav tig mus rau pem hauv ntej thiab maj mam tsim cov ribbon vortex, uas yuav ua rau muaj kev vibration ntawm chav turbine.
Hauv kev ua haujlwm ntawm hydraulic turbine, qhov tseem ceeb tshaj plaws uas ua rau muaj kev vibration ntawm hydraulic turbine unit yog lub siab pulsation ntawm cov raj raj, thiab qhov no yuav ua rau muaj kev hem thawj rau kev ua haujlwm ntawm Francis turbine.Tsis tas li ntawd, yog tias Karman vortex tsheb ciav hlau raug tsim los ntawm tus Tsov tus tw ntawm qhov ntws ncig airfoil, nws tseem yuav cuam tshuam rau kev ua haujlwm ib txwm muaj ntawm hydraulic turbine, vim tias nws yuav ua rau kev quab yuam quab yuam ntawm cov hniav khiav ntawm hydraulic turbine.Thaum qhov zaus ntawm qhov yuam kev vibration no tsim muaj ntau yam kev sib raug zoo nrog lub ntuj vibration zaus ntawm cov hniav khiav, nws yuav ua rau cov kab nrib pleb hauv cov hniav ntawm cov hydraulic turbine, thiab txawm ua rau cov hniav tawg.
Tsis tas li ntawd, muaj lwm qhov tseem ceeb uas yuav cuam tshuam rau kev ua haujlwm ruaj khov ntawm lub turbine, uas yog, hydraulic yam.Yog hais tias qhov kev ua haujlwm ntawm lub turbine unit deviates los ntawm tus qauv tsim ntawm lub turbine, qhov sib cais tshwm sim yuav tshwm sim ntawm qhov nkag thiab qhov hluav taws xob ntawm cov hniav.Vim qhov tsis ruaj tsis khov ntawm qhov sib cais qhov tshwm sim, qhov degree ntawm kev puas tsuaj kuj txawv.Cov qauv hydraulic ntawm hydraulic turbine yog lub zog ntawm tag nrho cov chaw nres tsheb hydropower.
Kev tsim qauv tsim nyog thiab tsim nyog, kev ua thiab kev tsim khoom ntawm chav dej turbine tuaj yeem txhim kho kev ruaj ntseg ntawm dej turbine ua haujlwm, thiab cov ntsiab lus tseem ceeb cuam tshuam rau nws cov qauv tsim thiab kev tsim khoom yog raws li hauv qab no:
① Rau cov khoom ntws ntws, thaum lub siab ntws hauv cov dej ntws ua rau cov khoom ntws ntws, nws yuav ua rau muaj kev ntxhov siab.Nrog rau qhov nce ntawm kev ntxhov siab, nws yuav ua rau elastic deformation ntawm cov khoom.Tsis tas li ntawd, thaum lub ndlwg yog agitated, txhua yam tseem yuav tsim kev co.Thaum lub vibration zaus ntawm cov dej ntws zoo ib yam li lub ntuj zaus ntawm cov khoom, nws tseem yuav tsim cov resonance, uas yuav tsis tsuas yog ua rau lub suab nrov, tab sis kuj cuam tshuam rau kev ua haujlwm ntawm hydraulic turbine unit.Tshwj xeeb tshaj yog rau chav dej turbine nrog loj loj thiab tsis tshua muaj ceev, nws lub ntuj zaus yog heev ze rau hydraulic tsis tshua muaj zaus, yog li nws yog ib qho yooj yim los cuam tshuam los ntawm resonance.
② Kev cuam tshuam ntawm kev siv tshuab.Hauv kev ua thiab kev tsim khoom ntawm hydraulic turbine chav tsev, yog tias cov hniav ua tsis raug, lossis muaj qhov yuam kev hauv cov txheej txheem vuam ntawm cov khoom, qhov nkag thiab qhov hluav taws xob qhib qhov tseem ceeb ntawm cov hniav yuav tsis sib npaug, uas yuav ua rau muaj teeb meem kev vibration. hydraulic turbine unit cav.
③ Thaum lub nplhaib labyrinth ua tiav, qhov loj ovality tseem yuav ua rau muaj teeb meem kev co ntawm chav tsev.
Tsis tas li ntawd, kev teeb tsa zoo ntawm chav dej turbine tseem yuav cuam tshuam rau kev ua haujlwm ruaj khov ntawm chav dej turbine.Ntawm cov khoom sib txawv ntawm cov hydraulic turbine unit, yog tias cov kev taw qhia bearings tsis concentric nrog ib leeg los yog cov axis tsis raug, nws yuav ua rau hydraulic vibration thiab vibration ntawm cov kabmob.
Post lub sij hawm: Sep-22-2021
