Tubhini yemvura muchina wemagetsi unoshandura simba rekuyerera kwemvura kuita simba remuchina unotenderera. Ndeye turbine muchina wemvura yemuchina. Kare 100 BC, rudiment yemvura turbine - turbine yemvura yakaonekwa muChina, iyo yakashandiswa kusimudza kudiridza uye kutyaira zviyo zvekugadzira zviyo. Mazhinji emazuva ano maturbine emvura akaiswa mumagetsi emagetsi kuti atyaire majenareta kuti agadzire magetsi. Muchiteshi chemagetsi emvura, mvura iri mudhamu repamusoro pemvura inotungamirwa kuenda kune hydraulic turbine kuburikidza nepiipi yemusoro kuti ityaire turbine runner kutenderera uye kutyaira jenareta kugadzira magetsi. Mvura yapera inodururwa kuzasi kwerukova kuburikidza nepombi yetailrace. Iyo yakakwirira yemusoro wemvura uye yakakura yekuyerera, iyo yakakura simba rekubuda reiyo hydraulic turbine.
A tubular turbine unit mu hydropower station ine cavitation dambudziko mumhanyi chamber ye turbine, iyo inonyanya kuumba cavitation nehupamhi hwe200mm uye yakadzika ye 1-6mm paimba yekumhanya pamvura inopinza uye yekubuda kweblade imwe chete, inoratidza cavitation mabhandi kumativi ose. Kunyanya, iyo cavitation muchikamu chepamusoro chekamuri yekumhanya inonyanya kuoneka, ine yakadzika ye10-20mm. Zvikonzero zvecavitation mukamuri yekumhanya ye turbine zvinoongororwa sezvinotevera:
Mumhanyi uye blade ye hydropower station inogadzirwa nesimbi isina tsvina, uye chinhu chikuru chekamuri yekumhanya ndeye Q235. Kuoma kwayo uye cavitation kuramba kwakashata. Nekuda kweiyo shoma yekuchengetera mvura yedhivha, dhamu rave richishanda kune yekupedzisira-yakakwirira dhizaini musoro kwenguva yakareba, uye nhamba huru yemabhuru emhepo anoonekwa mumvura yemuswe. Panguva yekushanda, mvura inoyerera mu hydraulic turbine kuburikidza nenharaunda iyo kudzvinyirira kwakaderera kudarika vaporization pressure. Mvura inopfuura nepaburi remba inoputika uye inofashaidza kuti ibudise mabubbles, ichiita kudzvanywa kwenzvimbo, zvichikonzera kukanganiswa kwesimbi nesando yemvura nguva nenguva, zvichikonzera kudzokorora mitoro pamusoro pesimbi, zvichikonzera kukuvadzwa kwezvinhu, semhedzisiro, iyo metal crystal cavitation inodonha. Iyo cavitation inoitika kakawanda pakamuri yekumhanya pane inopinza uye yekubuda kweiyo blade imwechete. Nokudaro, pasi pekushanda kwe-ultra-high mvura yemusoro kwenguva yakareba, iyo cavitation inoitika zvishoma nezvishoma uye inoramba ichidzika.
Tichifunga nezvedambudziko re cavitation ye turbine runner chamber, hydropower station yakagadziriswa nekugadzirisa welding pakutanga, asi dambudziko rakakomba recavitation rakawanikwa zvakare mukamuri yekumhanya panguva yekugadziriswa gare gare. Muchiitiko ichi, munhu anotarisira bhizinesi akatibata uye akatarisira kuti tinogona kubatsira kugadzirisa dambudziko re cavitation ye turbine runner chamber. Mainjiniya edu akagadzira hurongwa hwekugadzirisa hwakanangwa zvichienderana nekuongororwa kwakadzama kwemidziyo yebhizinesi. Ndichiri kuona ukuru hwekugadzirisa, takasarudza kabhoni nano polymer zvinhu zvinoenderana nemamiriro ekushanda emidziyo kuti isangane nezvinodiwa zvenguva refu yekushanda pasi penzvimbo yekushanda. Matanho ekugadzirisa pasaiti ndeaya anotevera:
1. Kuitisa pamusoro degreasing kurapwa nokuda cavitation zvikamu turbine runner chamber;
2. Kubvisa ngura nekuputika kwejecha;
3. Batanidza Sorecun nano polymer zvinhu uye uise kune chikamu chinogadziriswa;
4. Kusimbisa zvinhu uye tarisa kugadzirisa pamusoro.
Nguva yekutumira: Oct-14-2022
