Iyo yeyuniti suction urefu hwepombi yekuchengetera magetsi chiteshi ichava nemhedzisiro yakananga pane diversion system uye powerhouse marongero echiteshi chemagetsi, uye kudzika kudiki kwekuchera matongo kunodiwa kunogona kuderedza inoenderana nevagari mutengo wekuvaka wechiteshi chemagetsi; Nekudaro, ichawedzerawo cavitation njodzi panguva yekushanda kwepombi, saka iko kurongeka kwekuyerwa kwekukwirira panguva yekutanga kuiswa kwechiteshi chemagetsi kwakakosha. Mukutanga kushandiswa kwepombi turbine, zvakaonekwa kuti mumhanyi cavitation pasi pepombi yekushanda mamiriro akanga akakomba kupfuura iyo pasi pe turbine operating condition. Muchigadziro, zvinowanzodavirwa kuti kana iyo cavitation pasi pepombi yekushanda mamiriro inogona kusangana, iyo turbine inoshanda mamiriro anogonawo kusangana.
Sarudzo yekukweva kureba kwemusanganiswa inoyerera pombi turbine inonyanya kureva misimboti miviri:
Kutanga, ichaitwa maererano nemamiriro ekuti hapana cavitation pasi pekushanda kwepombi yemvura; Chechipiri, kupatsanurwa kwembiru yemvura hakugone kuitika muhurongwa hwese hwekufambisa mvura panguva yekuchinja kwechikamu chekurambwa kweyuniti.
Kazhinji, iyo chaiyo yekumhanyisa inoenderana neiyo cavitation coefficient yemumhanyi. Nekuwedzera kwekumhanya kwakananga, iyo cavitation coefficient yemumhanyi inowedzerawo, uye iyo cavitation performance inoderera. Yakasanganiswa neiyo empirical calculation value yekusveta kureba uye kukosha kwekuverengera kwedhigirii chubhu vacuum dhigirii pasi peiyo ine njodzi yekuchinja maitiro mamiriro, uye tichifunga kuti pane iyo nzvimbo yekuchengetedza kuchera kwevanhu zvakanyanya sezvinobvira, iyo unit ine yakakwana yekudzika kudzika kuti ive nechokwadi chekuchengetedza uye kugadzikana kushanda kwechikamu.
Kudzika kwemvura yakadzika yepamusoro yepamusoro pombi turbine inotarirwa maererano nekusavapo kwe cavitation yepombi turbine uye kusavapo kwekuparadzaniswa kwekoramu yemvura mumutsetse wehutu panguva dzakasiyana-siyana. Kudzika kwakadzika kwepombi turbines mumapombi ekuchengetedza magetsi emagetsi yakakura kwazvo, saka kukwidziridzwa kwemayuniti kwakadzikira. Kureba kwemayuniti emusoro wepamusoro anoshandiswa mumagetsi emagetsi akaiswa mukushanda muChina, akadai seXilong Pond, ari - 75m, ukuwo kureba kwezvidyarwa zvemagetsi akawanda ane 400-500m wemvura musoro anenge - 70 kusvika - 80m, uye kureba kwe700m wemvura musoro kunenge - 100m.
Munguva yekurambwa kwemutoro wepombi turbine, iyo sando yemvura inoita kuti avhareji yekumanikidzwa kweiyo dhizaini chubhu chikamu ichidonha zvakanyanya. Nekukurumidza kuwedzera kwemumhanyi kumhanya panguva yekuchinja kwemutoro wekurambwa, kuyerera kwakasimba kwemvura inotenderera kunoonekwa kunze kwechikamu chekumhanya, zvichiita kuti pakati pekumanikidza kwechikamu kuderera kupfuura kunze kwekumanikidza. Kunyange zvazvo avhareji yekumanikidzwa kwechikamu ichiri yakakura kudarika mhepo inopisa yemvura, dzvinyiriro yemunharaunda yepakati inogona kunge yakaderera kudarika mhepo inoputika yemvura, zvichiita kuti mvura iparadzane. Mukuongorora kwenhamba kwepombi turbine shanduko yekuchinja, chete avhareji yekumanikidza yechikamu chimwe nechimwe chepombi inogona kupihwa. Kuburikidza chete nemuyedzo wakazara wekutevedzera wemutoro wekurambwa shanduko nzira inogona kudonhedza kudzvinyirirwa kwenzvimbo kudzivirira chiitiko chekuparadzaniswa kwekoramu yemvura mune yekudhirowa chubhu.
Kudzika kwakadzika kwepamusoro pombi turbine haifanire kungosangana nezvinodiwa zve anti erosion, asi zvakare kuve nechokwadi chekuti dhizaini chubhu haina kupatsanurwa kwekoramu yemvura panguva dzakasiyana dzekuchinja. Iyo yepamusoro yepamusoro yepamusoro pombi turbine inotora kudzika kwakadzika kwemvura kudzivirira kupatsanurwa kwembiru yemvura panguva yekuchinja uye kuve nechokwadi chekuchengetedzwa kwemvura yekuchinjisa system uye zvikamu zvechiteshi chemagetsi. Semuyenzaniso, kudzika kudzika kudzika kweGeyechuan Pumped Storage Power Station ndiko - 98m, uye kudzika kudzika kweShenliuchuan Pumped Storage Power Station ndiko - 104m. Imba yeJixi inopombi yekuchengetera magetsi chiteshi ndeye - 85m, Dunhua iri - 94m, Changlongshan iri - 94m, uye Yangjiang iri - 100m.
Kune imwechete yepombi turbine, iyo iri kure inotsauka kubva kune yakakwana yekushanda mamiriro, iyo yakakura iyo cavitation intensity inotambura. Pasi pemamiriro ekushanda ekusimudzwa kwepamusoro uye kuyerera kuduku, mitsetse yakawanda inoyerera ine hombe yakanaka yekurwisa, uye cavitation iri nyore kuitika munzvimbo yakashata yekumanikidzika yeblade suction surface; Pasi pemamiriro ekusimudzwa kwakaderera uye kuyerera kukuru, kona yakaipa yekurwisa kweblade pressure surface yakakura, iyo iri nyore kukonzera kuyerera kuparadzaniswa, zvichiita kuti cavitation ivhuvhute yeblade pressure surface. Kazhinji, iyo cavitation coefficient yakakura kune chiteshi chemagetsi nemusoro wakakura shanduko yemhando, uye iyo yakaderera yekumisikidza kukwirira inogona kusangana nezvinodiwa kuti hapana cavitation ichaitika panguva yekushanda pakadzika kusimudza uye kusimudza mamiriro. Naizvozvo, kana musoro wemvura uchisiyana zvakanyanya, kureba kwekukwevera kuchawedzera zvinoenderana nemamiriro ezvinhu. Semuenzaniso, kudzika kwakadzika kweQX ndeye - 66m, uye MX-68m. Nekuti kusiyanisa kweMX musoro wemvura kwakakura, zvakanyanya kuoma kuziva kugadziridzwa uye vimbiso yeMX.
Zvinoshumwa kuti mamwe ekunze anopombi ekuchengetedza emagetsi emagetsi akasangana nekuparadzaniswa kwembiru yemvura. Iyo yakazara yekuenzanisira modhi bvunzo yeshanduko yeJapan yakakwira musoro pombi turbine yakaitwa mumugadziri, uye chiitiko chekuparadzanisa kwembiru yemvura chakadzidzwa zvakadzama kuti uone kukwidziridzwa kwepombi yepombi. Dambudziko rakanyanya kuoma remapombi ekuchengetedza masimba emagetsi ndiko kuchengetedzwa kwehurongwa. Izvo zvinodikanwa kuve nechokwadi kuti iyo spiral kesi yekumanikidza inosimuka uye muswe wemvura kudzvinyirira kwakashata kuri mukati meiyo yakachengeteka yakachengeteka pasi pemamiriro ekushanda zvakanyanya, uye kuve nechokwadi kuti iyo hydraulic performance inosvika padanho rekutanga, iro rine simba guru pakusarudzwa kwekudzika kwemvura.
Nguva yekutumira: Nov-23-2022
