Silawulwa kanjani isivinini sokuqalisa kubhayela? Kungani isivinini sokukhuphuka kwengcindezi singakwazi ukushesha kakhulu?
Umfutho ukhuphula isivinini esigabeni sokuqala sokuqalwa kwebhayela futhi phakathi nayo yonke inqubo yokuqalisa kufanele uhambe kancane, ulingane, futhi ulawulwe ngokuqinile phakathi kwebanga elishiwo. Ngenqubo yokuqalisa yama-boilers esigubhu se-high-pressure kanye ne-ultra-high-high-pressure, isivinini sokukhuphula ingcindezi ngokuvamile silawulwa sibe ngu-0.02~0.03 MPa/min; kumayunithi asekhaya angu-300MW angenisiwe, isivinini sokukhuphuka komfutho akufanele sibe sikhulu kuno-0.07MPa/min ngaphambi kokuxhumeka kwegridi, futhi akufanele sibe sikhulu kuno-0.07 MPa/min ngemva kokuxhumeka kwegridi. 0.13MPa/min.
Esigabeni sokuqala sokukhushulwa kwe-boost, ngenxa yokuthi ama-burners ambalwa kuphela asetshenziswayo, ukuvutha akunamandla, ilangabi lesithando somlilo aligcwaliswa kahle, futhi ukushisa kwendawo yokushisa yokuhwamuka akulingani; ngakolunye uhlangothi, ngenxa yokuthi izinga lokushisa kwendawo yokushisa nodonga lwesithando somlilo liphansi kakhulu, Ngakho-ke, phakathi kokushisa okukhishwe ukushiswa kukaphethiloli, akukho ukushisa okuningi okusetshenziselwa ukuhwamulisa amanzi esithandweni. Lapho ingcindezi iphansi, kuba mkhulu ukushisa okucashile kokuhwamuka, ngakho-ke awukho umusi omningi okhiqizwa endaweni ehwamukayo. Umjikelezo wamanzi awusungulwa ngokujwayelekile, futhi ukushisa akukwazi ukukhuthazwa kusuka ngaphakathi. Ingaphezulu lishisisa ngokulinganayo. Ngale ndlela, kulula ukubangela ukucindezeleka okukhulu kokushisa emishinini yokuhwamuka, ikakhulukazi isigubhu se-steam. Ngakho-ke, izinga lokushisa kufanele lihambe kancane ekuqaleni kokunyuka kwengcindezi.
Ukwengeza, ngokusho koshintsho phakathi kwezinga lokushisa lokugcwala kanye nokucindezela kwamanzi nomusi, kungabonakala ukuthi ukuphakama kwengcindezi, kuncane inani lokushisa lokugcwalisa elishintsha ngokucindezela; ingcindezi ephansi, inani elikhulu lokushisa kwesimo lishintsha ngokucindezela, ngaleyo ndlela kubangele umehluko wezinga lokushisa Ukucindezeleka kokushisa okudlulele kuzokwenzeka. Ngakho-ke ukugwema lesi simo, isikhathi sokukhushulwa kufanele sibe side.
Esigabeni sakamuva sokwanda kwengcindezi, nakuba umehluko wokushisa phakathi kwezindonga ezingenhla neziphansi zesigubhu kanye nezindonga zangaphakathi nezangaphandle ziye zancishiswa kakhulu, isivinini sokwandisa ingcindezi singashesha kunalokho esisesiteji sokucindezela okuphansi, kodwa i-mechanical ukucindezeleka okubangelwa ukwanda kwengcindezi yokusebenza kukhulu, ngakho-ke ingcindezi esigabeni sakamuva Isivinini sokukhulisa akufanele sidlule isivinini esichazwe emithethweni.
Kungabonakala kulokhu okungenhla ukuthi ngesikhathi senqubo yokuqinisa ingcindezi ye-boiler, uma isivinini somfutho we-pressure sishesha kakhulu, sizothinta ukuphepha kwesigubhu se-steam kanye nezingxenye ezihlukahlukene, ngakho-ke isivinini sokukhulisa ingcindezi asikwazi ukushesha kakhulu.
Yiziphi izinkinga okufanele zinakwe lapho iyunithi iqala ukushisa nokucindezela?
(1) Ngemva kokuba ubhayela ubasiwe, ukufutha kwensiza ye-air preheater kufanele kuqiniswe.
(2) Lawula ngokuqinile ukukhuphuka kwezinga lokushisa kanye nesivinini sokukhuphuka komfutho ngokuya ngejiko lokuqalisa leyunithi, futhi uqaphe umehluko wezinga lokushisa phakathi kwezigubhu ezingenhla nezingaphansi kanye nezindonga zangaphakathi nezingaphandle ukuze zingeqi ku-40°C.
(3) Uma isifudumezisi somile, izinga lokushisa lentuthu yesithando somlilo kufanele lilawulwe ngokuqinile ukuze lingeqi izinga lokushisa elivumelekile lodonga lweshubhu, futhi izindonga zeshubhu yokushisa ephezulu neyokushisa kufanele ziqashwe ngokucophelela ukuze kuvinjelwe ukushisa ngokweqile.
(4) Gada eduze izinga lamanzi esigubhu futhi uvule ivalvu yokujikeleza kabusha kwe-economizer lapho ukuhlinzekwa kwamanzi kumiswa.
(5) Lawula ngokuqinile ikhwalithi yeziphuzo ezinesoda.
(6) Vala umnyango womoya kanye nevalvu yokukhipha amanzi yesistimu yesitimu ngesikhathi.
(7) Ukuqapha njalo okokufaka kwesibhamu somlilo kanye nowoyela, uqinise ukugcinwa nokulungiswa kwesibhamu sikawoyela, futhi ugcine i-atomization enhle kanye nokuvutha.
(8) Ngemva kokuba i-steam turbine igingqiwe, gcina izinga lokushisa lesititi lisezingeni lokushisa elingaphezu kuka-50°C. Umehluko wezinga lokushisa phakathi kwezinhlangothi ezimbili zesitimu esishisa kakhulu nesishiso esishise kabusha akufanele ube ngaphezu kuka-20°C. Sebenzisa amanzi aqeda ukushisa ngokucophelela ukuze uvimbele ukushintshashintsha okukhulu kwezinga lokushisa lesitimu.
(9) Hlola njalo futhi urekhode imiyalelo yokunwetshwa kwengxenye ngayinye ukuze uvimbele ukuthikamezeka.
(10) Uma kutholakala okungavamile ezintweni ezithinta ngokuqondile ukusebenza okuvamile, inani kufanele libikwe, ukunyuka kwengcindezi kufanele kumiswe, futhi ukunyuka kwengcindezi kufanele kuqhutshekwe ngemva kokuba amaphutha eseqediwe.
Isikhathi sokuthumela: Nov-29-2023
