Mayelana nama-turbine blades

I-blade iyingxenye ebalulekile ye-steam turbine futhi enye yezingxenye ezintekenteke nezibalulekile.Ithwala imiphumela ehlangene yokushisa okuphezulu, umfutho ophakeme, amandla amakhulu e-centrifugal, amandla esitimu, amandla ajabulisayo, ukugqwala nokudlidliza kanye nokuguguleka kwamaconsi amanzi endaweni emanzi ngaphansi kwezimo ezinzima kakhulu.Ukusebenza kwayo kwe-aerodynamic, i-geometry yokucubungula, ukugwedla kwendawo, imvume yokufaka, izimo zokusebenza, ukukala nezinye izici konke kuthinta ukusebenza kahle nokuphuma kwe-turbine;Idizayini yayo yesakhiwo, ukuqina kokudlidliza kanye nemodi yokusebenza kunomthelela omkhulu ekuphepheni nasekuthembekeni kweyunithi.Ngakho-ke, amaqembu akhiqizayo adume kakhulu emhlabeni enze imizamo engapheli yokusebenzisa impumelelo ethuthuke kakhulu yesayensi nezobuchwepheshe ekuthuthukiseni izindwani ezintsha, futhi ethula njalo ama-blade amasha asebenza kahle kakhulu kusukela kwesinye isizukulwane kuye kwesinye ukuze avikele isikhundla sawo esithuthukile emkhakheni we-turbine. ukukhiqiza.

Kusukela ngo-1986 kuya ku-1997, imboni yamandla yaseShayina ibilokhu ithuthuka ngokuqhubekayo nangesivinini esikhulu, futhi i-turbine yamandla ibona ipharamitha ephezulu namandla amakhulu.Ngokwezibalo, ekupheleni kuka-1997, amandla afakiwe ezinjini zomusi okuhlanganisa amandla ashisayo namandla enuzi ayesefinyelele ku-192 GW, kuhlanganisa namayunithi angu-128 ashisayo angu-250-300 MW, 29 320.0-362.5 MW namayunithi angu-17 500-660mws ;Amayunithi angu-200 MW nangaphansi nawo athuthuke kakhulu, okuhlanganisa amayunithi angu-188 angu-200-210 MW, amayunithi angu-123 angu-110-125 MW kanye namayunithi angu-141 angu-100 MW.Umthamo omkhulu weturbine yamandla enuzi ngu-900MW.

Ngomthamo omkhulu we-steam turbine yesiteshi samandla kagesi e-China, ukuphepha nokuthembeka kwama-blade nokugcinwa kokusebenza kahle kwawo okuphezulu kubaluleke kakhulu.Kumayunithi angu-300 MW kanye nama-MW angu-600, amandla ashintshwa yi-blade ngayinye yesiteji afinyelela ku-10 MW noma ngisho nama-20 MW.Ngisho noma i-blade yonakaliswe kancane, ukuncishiswa komnotho oshisayo nokuthembeka kokuphepha kwe-steam turbine kanye neyunithi yonke yamandla ashisayo ayikwazi ukushaywa indiva.Isibonelo, ngenxa yokulinganisa, indawo ye-nozzle yesiteji sokuqala yokucindezela okuphezulu izoncishiswa ngo-10%, futhi ukukhishwa kweyunithi kuzoncishiswa ngo-3%.Ngenxa yomonakalo odalwe yizindaba zakwamanye amazwe ezinzima ezishaya i-blade kanye nomonakalo obangelwa izinhlayiya eziqinile eziguguleka i-blade, ukusebenza kahle kwesiteji kungancishiswa ngo-1% ~ 3% kuye ngobunzima baso;Uma i-blade iphuka, imiphumela yilena: ukudlidliza okulula kweyunithi, ukungqubuzana okuguquguqukayo nokumile kwephaseji lokugeleza, nokulahlekelwa ukusebenza kahle;Ezimweni ezimbi kakhulu, ukuvala umlomo ngempoqo kungase kubangelwe.Ngezinye izikhathi, kuthatha amasonto ambalwa kuya ezinyangeni ezimbalwa ukushintsha izindwani noma ukulungisa ama-rotor nama-stators awonakele;Kwezinye izimo, umonakalo we-blade awutholakali noma uphathwa ngesikhathi, okwenza ingozi idlulele kuyo yonke iyunithi noma ukudlidliza okungenakulinganisela kweyunithi ngenxa yokuphuka kwensingo yokugcina yesiteji, okungaholela ekubhujisweni kwayo yonke. iyunithi, futhi ukulahlekelwa kwezomnotho kuzoba ngamakhulu ezigidi.Izibonelo ezinjalo azivamile ekhaya naphesheya.

Ulwazi oluqoqwe eminyakeni edlule lufakazele ukuthi noma nini lapho inani elikhulu lamaturbine amasha esetshenziswa noma lapho ukunikezwa kwamandla kanye nesidingo kungalingani futhi izinjini zesimusi zisebenza isikhathi eside ngokuphambuka ezimeni zokuklama, ukwehluleka kwe-blade. umonakalo odalwe ukuklama okungafanele, ukukhiqiza, ukufakwa, ukunakekelwa kanye nokusebenza kuzodalulwa ngokugcwele.Njengoba kushiwo ngenhla, umthamo ofakiwe wezinjini ezinkulu zezitimu eziteshini zikagesi eShayina ukhule ngokushesha ngaphezu kweminyaka eyi-10, futhi isimo esisha sokusebenza komthwalo ophansi wesikhathi eside wamayunithi amakhulu kwezinye izindawo sesiqalile ukubonakala.Ngakho-ke, kuyadingeka ukuphenya, ukuhlaziya nokufingqa zonke izinhlobo zokulimala kwama-blades, ikakhulukazi isigaba sokugcina kanye nama-blade esiteji esilawulayo, futhi uthole imithetho, ukuze wenze izinyathelo zokuvimbela nokuthuthukisa ukugwema ukulahlekelwa okukhulu.