Ungalixazulula kanjani izinga lokushisa lomusi we-gas steam generator liphansi kakhulu?

I-gas steam generator ibizwa nangokuthi i-gas steam boiler. I-Gas steam generator iyingxenye ebalulekile yedivayisi yamandla kagesi. Ama-boilers esiteshini samandla, ama-steam turbines kanye nama-generator yizinjini eziyinhloko zeziteshi zamandla ashisayo, ngakho-ke ama-boilers esiteshini samandla ayimishini ebalulekile yokukhiqiza nokucubungula amandla kagesi. Ama-boilers wezimboni ayimishini edingekayo yokuhlinzeka ngesitimu esidingekayo ekukhiqizeni, ekucubunguleni nasekushisiseni emabhizinisini ahlukahlukene. Kunamabhoyela amaningi ezimboni futhi adla uphethiloli omningi. Ama-boilers okushisa angcolile asebenzisa igesi yokukhipha izinga lokushisa eliphezulu njengomthombo wokushisa enqubweni yokukhiqiza adlala indima ebalulekile ekongeni amandla.

Lapho kusetshenziswa isitimu esiningi, kunezidingo zokushisa kwesitimu. I-steam enezinga eliphezulu lokushisa idlala indima ebalulekile ezinqubweni ezifana nokushisisa, ukuvutshelwa, kanye nokuvalwa inzalo. Izinga lokushisa lamajeneretha omusi we-Nobeth ngokuvamile lingafinyelela ku-171°C, kodwa ngezinye izikhathi amakhasimende abika ukuthi izinga lokushisa lesitimu liphansi futhi alikwazi ukuhlangabezana nezimfuneko. Ngakho, siyini isizathu salolu hlobo lwesimo? Kufanele sikuxazulule kanjani? Ake sikuxoxe nawe.

Okokuqala, sidinga ukuthola isizathu sokuthi kungani izinga lokushisa le-steam ye-gas generator liphezulu. Ingabe kungenxa yokuthi i-generator ye-steam ayinamandla ngokwanele, okokusebenza kuyiphutha, ukulungiswa kwengcindezi akunangqondo, noma izinga lokushisa le-steam elidingwa ngumsebenzisi liphezulu kakhulu, futhi i-generator ye-steam eyodwa ayikwazi ukuwanelisa.

Izixazululo ezilandelayo zingasetshenziswa ezimweni ezahlukene:
1. Amandla anganele wejeneretha yesitimu aholela ngokuqondile ekuhlulekeni kokukhishwa kwesitimu ukuze kuhlangatshezwane nezidingo zokukhiqiza. Inani lesitimu esiphuma kujeneretha lesitimu alikwazi ukuhlangabezana nenani lesitimu esidingekayo ekukhiqizeni, futhi izinga lokushisa ngokwemvelo alanele.
2. Kunezizathu ezimbili zokuhluleka kwemishini okwenza izinga lokushisa lesitimu eliphuma kujeneretha lesitimu libe phansi. Enye iwukuthi i-gauge yokucindezela noma i-thermometer iyahluleka futhi izinga lokushisa le-steam yesikhathi sangempela nokucindezela akukwazi ukuqapha ngokunembile; enye iwukuthi ishubhu lokufudumala liyashiswa, inani le-steam elikhiqizwa i-steam generator liba lincane, futhi izinga lokushisa alikwazi ukuhlangabezana nezidingo zokukhiqiza.
3. Ngokuvamile, izinga lokushisa nokucindezela kwesitimu esigcwele kuyalingana ngokuqondile. Lapho umfutho we-steam ukhuphuka, izinga lokushisa nalo lizokhuphuka. Ngakho-ke, lapho uthola ukuthi izinga lokushisa le-steam eliphuma ku-generator ye-steam aliphezulu, ungakwazi ukulungisa i-gauge yokucindezela ngokufanele.

Izinga lokushisa le-steam aliphezulu ngoba lapho ingcindezi ingekho ngaphezu kwe-1 MPa, ingafinyelela ukucindezela okuncane okuhle kwe-0.8 MPa. Isakhiwo sangaphakathi sejeneretha yesitimu sisesimweni sokucindezela okungekuhle (ngokuyisisekelo kuphansi kunomfutho womkhathi, ngokuvamile omkhulu kuno-0). Uma ingcindezi ikhuphuka kancane ngo-0.1 MPa, kufanele kube nokulungiswa kwengcindezi. Ngamanye amazwi, ngisho noma ingaphansi kuka-0, sebenzisa Iphinde ibe ijeneretha yesitimu ngaphakathi kuka-30L, futhi izinga lokushisa lizoba ngaphezu kuka-100°C.

Ukucindezela kungaphezu kuka-0. Ngisho noma ngingazi ukuthi usayizi onjani, uma mkhulu kunomfutho womoya, uzoba ngaphezu kwamadigri angu-100. Uma umfutho uphakeme kunomfutho womkhathi, izinga lokushisa lamafutha okudlulisa ukushisa liphansi kakhulu, noma ikhoyili ye-evaporator iyashiswa futhi igezwe. Ngokuvamile, yimpahla engokoqobo yomhwamuko wamanzi. Izohwamuka lapho ifinyelela ku-100, futhi isitimu asikwazi ukufinyelela kalula amazinga okushisa aphezulu.

Lapho isitimu sithola umfutho, isitimu sizobona izinga lokushisa eliphakeme kancane, kodwa uma lehla ngaphansi komfutho womoya ovamile, izinga lokushisa lizokwehla ngokushesha libe yi-100. Indlela kuphela yokwenza into enjengale ngaphandle kokunyusa umfutho injini yesitimu iwukuphenduka. i-steam ibe yi-negative pressure. Ngaso sonke isikhathi lapho umfutho we-steam ukhuphuka cishe ngo-1, izinga lokushisa le-steam lizokhuphuka cishe ngo-10, njalonjalo, kungakanani izinga lokushisa elidingekayo nokuthi kungakanani ukucindezela okudingeka kwandiswe.

Ngaphezu kwalokho, kuhloswe ukuthi izinga lokushisa lomusi liphezulu noma cha. Uma lezi zindlela ezingenhla zisengakwazi ukuxazulula inkinga yokushisa kwe-steam ephansi ephuma ku-generator yesitimu, kungase kube kuphela ukuthi izinga lokushisa elidingekayo liphezulu kakhulu futhi lidlule umthamo wezinto zokusebenza. Kulokhu, Uma zingekho izidingo eziqinile ekucindezelweni, cabanga ukwengeza i-steam superheater.

Kafushane, okungenhla yizo zonke izizathu zokuthi kungani izinga lokushisa le-steam le-generator ye-steam liphezulu. Kuphela ngokuqeda izinkinga ezingase zibe khona ngamunye ngamunye singathola indlela yokwandisa izinga lokushisa lomusi ophuma kujeneretha umusi.