Kunezici ezimbili eziyinhloko ezithinta izinga lokushisa le-steam ye-steam generator: enye ingxenye yegesi ye-flue; enye uhlangothi lwesitimu.
Izici eziyinhloko ezinomthelela ohlangothini lwe-flue gas yilezi:1) Izinguquko kuphethiloli izakhiwo. 2) Izinguquko kumthamo womoya nokusabalalisa. 3) Izinguquko ekwakhekeni komlotha endaweni yokushisa. 4) Izinguquko ekushiseni kwesithando somlilo. 5) Lungisa ingcindezi embi yesithando somlilo ngaphakathi kobubanzi obujwayelekile.
Izici eziyinhloko ezinomthelela ohlangothini lwe-steam yilezi:1) Izinguquko kumthwalo wejeneretha yesitimu. 2) Izinguquko ekushiseni kwesitimu esigcwele. 3) Izinguquko ekushiseni kwamanzi okuphakelayo.
Akungabazeki ukuthi izinga lokushisa le-steam generator lingenye yemingcele eyinhloko yokusebenza okuphephile nokonga kwejeneretha ye-steam. Izinga lokushisa le-steam generator lithinta ngqo ukuphepha nomnotho weyunithi. Ukushisa kwe-steam ephezulu ngokweqile kungase kubangele indawo yokushisisa ukuthi ishise futhi iqhume ipayipi, kubangele ukucindezeleka okushisayo okwengeziwe kwipayipi lesitimu kanye nengxenye yokucindezela okukhulu kwe-steam turbine, ngaleyo ndlela kufinyeze impilo yesevisi yemishini. Ngakolunye uhlangothi, izinga lokushisa eliphansi kakhulu le-steam lizonciphisa ukusebenza kahle kwezomnotho kweyunithi, futhi ezimeni ezinzima, amanzi angase akhiqizwe. umthelela.
Izici ezithinta izinga lokushisa lesitimu le-steam generator ikakhulukazi zihlanganisa izici ezintathu ezilandelayo:
1. Izinguquko ekucindezelweni kwesitimu esikhulu
Umthelela wengcindezi enkulu yesitimu ekushiseni okuphezulu kwesitimu sibonakala ngokusatshalaliswa kokukhuphuka kwe-enthalpy ephakathi nendawo kanye noshintsho lomthamo wokushisa othize. Umthamo wokushisa othize we-steam eshisa kakhulu uthintwa kakhulu ukucindezela. Umehluko phakathi kwezinga lokushisa le-steam elilinganiselwe kanye nezinga lokushisa lokugcwala likhuphuka ngomfutho ophansi, kanye nengqikithi yesitimu esishisa kakhulu Ukuphakama kwe-enthalpy kuzokwehla.
2. Ithonya lokushisa kwamanzi okuphakelayo
Lapho izinga lokushisa lamanzi okuphakelayo lehliswa, njengalapho ukushisisa okuphezulu kuhoxiswa, lapho ukuphuma kwejeneretha yesitimu kuhlala kungashintshile, izinga lokushisa eliphansi lokuphakelayo lamanzi nakanjani lizoholela ekwenyukeni kwenani likaphethiloli, okuholela ekwenyukeni kokushisa okukhazimulayo okuphelele. esithandweni kanye nomehluko wezinga lokushisa phakathi kwentuthu yesithando somlilo kanye nokushisa okukhazimulayo. Izinga lokushisa le-steam ekuphumeni kwe-convection superheater lizokhuphuka; ngakolunye uhlangothi, ukwenyuka kwevolumu yegesi ye-flue kanye nomehluko wokushisa wokudlulisa ukushisa kwe-convection superheater kuzokwandisa izinga lokushisa lomusi. Isamba salezi zinguquko ezimbili sizobangela ukuthi izinga lokushisa lesitimu esishisa kakhulu likhuphuke kakhulu. Lokhu kwanda kunomthelela omkhulu kunokumane ukhuphule umthwalo wejeneretha yesitimu kuyilapho kugcina izinga lokushisa lamanzi okuphakelayo lingashintshile. Ngokuphambene nalokho, lapho izinga lokushisa kwamanzi okuphakelayo likhuphuka, izinga lokushisa le-steam lizokwehla.
3. Ithonya lendawo emaphakathi yelangabi lesithando somlilo
Njengoba indawo emaphakathi yelangabi lesithando somlilo ihambela phezulu, izinga lokushisa lentuthu yesithando somlilo lizokhula. Njengoba ukushisa okumuncwa i-heater enkulu ekhazimulayo kanye ne-convection superheater ikhuphuka futhi izinga lokushisa lesitimu liyenyuka, indawo yesikhungo somlilo inomthelela omkhulu kuzinga lokushisa lomusi oshisa kakhulu.
Izici ezithinta izinga lokushisa lokushisisa kabusha kwesitimu kanye nezinga lokushisa le-superheat liyafana ngokuyisisekelo. Nokho, ingcindezi yesitimu esishisiswe kabusha iphansi futhi izinga lokushisa elivamile liphezulu. Ngakho-ke, amandla ayo okushisa athize mancane kunesitimu esishisa kakhulu. Ngakho-ke, lapho inani elifanayo lesitimu lithola ukushisa okufanayo, ukuguquka kwezinga lokushisa kwesitimu esishiselwe kabusha kuba kukhulu kunalolo lwesitimu esishisa kakhulu. Ngamafuphi, ukushisa kwe-steam ye-steam generator kuyisici esibalulekile sokusebenza, kodwa ngenxa yokuthi kunezici eziningi ezithinta izinga lokushisa lomusi, inqubo yokulungisa inzima. Lokhu kudinga ukuthi ukulungiswa kwezinga lokushisa le-steam kufanele kuhlaziywe futhi kubhekwe njalo, futhi umqondo wokulungisa kusengaphambili kufanele usungulwe.
Lapho izinga lokushisa lishintsha, kufanele siqinise ukugadwa nokulungiswa kwezinga lokushisa lesitimu, sihlaziye ubudlelwano phakathi kwezinto ezithonyayo nezinguquko, futhi sihlole ulwazi oluthile ekulungiseni izinga lokushisa lomusi ukuze siqondise ukusebenza kwethu kokulungisa.
Isikhathi sokuthumela: Nov-03-2023
