Ugesi wezindlela ezintathu wokuhambisa amanzi we-heater ephezulu
| Thayipha | Izindlela ezintathu Valve |
| Imodeli | I-F963Y-2500LB, F963Y-420 |
| Ububanzi bokuqanjwa | I-DN 350-600 |
Ngesikhathi sokusebenza okujwayelekile kwe-heater ephezulu engu-600 kuye ku-1,000MW iyunithi yamandla kagesi ashisayo (i-ultra-supercritical), umzila omkhulu we-valve yezindlela ezintathu endaweni yokufaka umfutho ophakeme uvulwa futhi ukudlula kuvaliwe. Ukuphakelwa kwamanzi kubhayela kufaka ukungena ku-heater ephezulu kusuka emzileni omkhulu ngaphambi kokungena kubhayela nge-valve yezindlela ezintathu endaweni yokushisa ephezulu yokushisa.
- Umzimba we-valve nebhonethi yamukela isakhiwo sensimbi esakhiwe ngokuphelele.
- Uhlobo lokuvala lomzimba we-valve nebhonethi isebenzisa ingcindezi yokuzivala.
- Idizayini ye-valve yakhelwe ngezihlalo ze-valve ezingaphezulu nangaphansi. Lapho i-valve ikhuphuka ivulwa namanzi angena ku-heater ephezulu, ingxenyenkulu ye-valve ixhumana nesihlalo se-valve esingenhla ukuze kubekwe uphawu ukuvimbela ukuthi amanzi angangeni ekudluleni; lapho i-valve iyehla ukuvalwa nokutholakala kwamanzi kungena kubhayela ngokudlula, umgogodla we-valve uthinta isihlalo se-valve esingezansi sokuvala ukuqinisekisa ukunqanyulwa nokulungiswa kwesifudumezi esinamandla.
- Isihlalo se-valve ephezulu ne-valve bonnet yamukela uhlobo loqhekeko lwesakhiwo ukwenza lula ukuqaqa.
- Ukudlula lapho ukugeleza kwamanzi kudlula khona kufakwe izakhi zempophoma, okunikeza ukulahleka kwengcindezi okufana nepayipi elinengcindezi ephezulu lapho kudlula khona okuphakathi ukuvimbela ukwehla kwengcindezi yokuphakelwa kwamanzi.
- Uma kunqanyulwa i-heater enengcindezi enkulu, isondo lesandla engxenyeni engenhla ye-valve lingasiza ekuvaleni i-valve ngokweqile.
- Izakhi ze-mpintsha ezifakweni ze-valve ezihamba ngezindlela ezintathu nesihlalo se-valve esingenhla zamukela ukwakheka okuhlanganisiwe futhi azidingi i-throttle orifice eyengeziwe ngokwehlukana.
