Sezvatinoziva tese, mvura turbine jenareta seti ndiyo musimboti uye kiyi yemuchina chikamu chehydropower station. Naizvozvo, zvinonyanya kukosha kuve nechokwadi chekushanda kwakagadzikana kweiyo yese hydraulic turbine unit. Pane zvinhu zvakawanda zvinokanganisa kugadzikana kwehydraulic turbine unit, izvo zvave zviripo kubva pakugadzirwa kweiyo hydraulic turbine unit.
Mukugadzirwa kwese kwe hydraulic turbine unit, pesvedzero ye hydraulic dhizaini idiki. Kana iyo turbine unit yemvura ichishanda pasi pemamiriro enguva dzose, mvura inoyerera painomhanya yekubuda kweiyo unit icharamba ichiyerera ichibuda, uye mvura inoyerera pane inomhanya inobuda haitenderere. Kana iyo turbine isiri munzvimbo yakakwana yekushanda, kuyerera kweanomhanya kunobuda zvishoma nezvishoma kunogadzira kuyerera kwedenderedzwa mu turbine draft chubhu. Kana turbine iri pasi pe40 ~ 70% chikamu chemutoro wemusoro wakaderera, kuyerera kweanomhanya kunotenderera kunotenderera mberi uye zvishoma nezvishoma kuumba ribhoni vortex, izvo zvinotozokonzera kuzunguzika kweiyo turbine unit.
Mukushanda kwe hydraulic turbine, chinhu chinonyanya kukosha chinokonzera kuzunguzika kwehydraulic turbine unit is pressure pulsation of draft chubhu, uye chinhu ichi chinozokonzera kutyisidzira kushanda kwaFrancis turbine. Uye zvakare, kana chitima cheKarman vortex chikagadzirwa pamuswe wekuyerera kwakatenderedza airfoil, ichakanganisawo kushanda kwakajairwa kweiyo hydraulic turbine, nekuti zvinozotungamira kune kumanikidzwa vibration yeanomhanya blade yehydraulic turbine. Kana iyo frequency yeiyi yekumanikidzira vibration inoumba hukama hwakawanda neakasikwa vibration frequency yeanomhanya blade, inotungamira kune makatsemuka mumhanyi blade ye hydraulic turbine, uye inototungamira mukuputsika kweblade.
Mukuwedzera, pane chimwe chinhu chichakanganisa kushanda kwakagadzikana kweturbine, kureva, hydraulic factor. Kana mamiriro ekushanda kweturbine unit akatsauka kubva pakugadzirisa mamiriro e turbine, kuyerera kwekuparadzanisa chiitiko kuchaitika pakupinza uye kubuda kweblade. Pamusana pehuwandu husina kugadzikana hwekuyerera kwekuparadzanisa phenomenon, chiyero chekukuvadza chakasiyanawo. Iyo hydraulic modhi ye hydraulic turbine ndiyo sosi yemagetsi yese hydropower station.
Sainzi uye inonzwisisika dhizaini dhizaini, kugadzirisa uye kugadzirwa kweiyo mvura turbine unit inogona kunyatso kuvandudza kugadzikana kwemvura turbine kushanda, uye zvinhu zvikuru zvinokanganisa dhizaini nekugadzira kwayo ndezvizvi:
① Yezvikamu zvekuyerera, kana iyo yekuyerera inoyerera mundima inoyerera ichiita pane inoyerera ndima yezvikamu, inoburitsa kushushikana. Nekuwedzera kwekushushikana, zvinotungamira kune elastic deformation yezvikamu. Pamusoro pezvo, kana kuyerera kuchinge kubvongodzwa, chimwe nechimwe chikamu chinoburitsawo kuzununguka. Kana iyo vibration frequency yekuyerera kwemvura yakafanana neyechisikigo frequency yezvikamu, inoburitsawo resonance, iyo isingazongoburitsa yakakomba kusvibiswa kweruzha, asi zvakare inokanganisa kushanda kwakajairwa kwehydraulic turbine unit. Kunyanya kune iyo turbine yemvura unit ine saizi yakakura uye yakaderera kumhanya, iyo yakasarudzika frequency iri padyo neiyo hydraulic low frequency, saka zviri nyore kubatwa neresonance.
② Kupesvedzera kwekugadzira tekinoroji. Mukugadzirisa nekugadzira hydraulic turbine unit, kana blade process isiri iyo chaiyo, kana paine zvikanganiso muwelding process yezvikamu, iyo inlet uye yekubuda yekuvhura kukosha kwemablades ichave isina kuenzana, izvo zvinozopedzisira zvatungamira kuvibration matambudziko ehydraulic turbine unit injini.
③ Kana mhete yelabyrinth ikagadziriswa, iyo yakakura ovality inotungamira kumatambudziko ekudengenyeka kweyuniti.
Uye zvakare, iyo yekuisa mhando yemvura turbine unit ichakanganisawo kushanda kwakagadzikana kweiyo mvura turbine unit. Pakati pezvikamu zvakasiyana-siyana zve hydraulic turbine unit, kana mabheji emutungamiri asina kutarisana nemumwe kana kuti axis isiri yakarurama, inokonzera hydraulic vibration uye vibration yezvikamu zvinotakura.
Nguva yekutumira: Sep-22-2021
