Incwadi yemiyalelo yensimbi engagqwali engu-304ivalvu yesango lommeseiyivalvu yokulawula eyinhloko ezinikele yamapayipi okuthutha udaka lwezimayini. Ilinganiswe ngomfutho ojwayelekile ongu-1.6MPa, itholakala ngobukhulu obujwayelekile be-DN100, DN300 kanye ne-DN350, ifanele izimo zokusebenza ezinokushisa okuphakathi ≤ 100℃. Yakhelwe ngqo udaka lwezimayini olunezinhlayiya eziqinile kanye nezici eziqinile zokukhuhla, le valve ixazulula izindawo ezivamile zobuhlungu bezimboni zamavalvu endabuko njengokuvaleka njalo, ukuklwebheka okukhulu kanye nokwehluleka kokuvala. Ngokusebenza okuzinzile nokuthembekile, isibe yidivayisi yokulawula uketshezi ethandwayo yamaphrojekthi okuthutha amaminerali emhlabeni wonke kanye nezindawo zokuthutha imisele, ivumelana ngokuphelele nezimo zokusebenza ezinzima zezimayini.

Le valve inezinto zobungcweti kanye nomklamo wesakhiwo owenzelwe isevisi yodaka. Umzimba wevalvu yensimbi engagqwali engu-304 uhlinzeka ngokumelana nokugqwala okuvelele kanye nokusebenza okulwa nokukhuhla, umelana ngempumelelo nokuguguleka kanye nomonakalo obangelwa ukungcola kwamaminerali kudaka, futhi ugwema izinkinga zokugqwala nokubhoboka kwamavalvu avamile. Isakhiwo se-blade esincane nesibukhali singasika kahle izinsalela eziqinile kanye nokungcola kwe-fiber endaweni, siqinisekise ukuvulwa nokuvalwa okungenakuvinjelwa ngaphandle kokuminyana kwezinto. Njengoba isebenzisa i-handwheel drive ehlanzekile, ayidingi ama-motor kagesi, imithombo yomoya noma eminye imishini yamandla asekelayo. Ukusebenza okulula nokuthembekile endaweni ngeke kuthinteke ukucima kukagesi noma ukwehluleka kokunikezwa komoya, okuqinisekisa ukusebenza okuzinzile kwephayiphi unyaka wonke.

Iqhosha ngokusebenza kahle kokuvala kanye nokuzivumelanisa nezimo kokufakwa. Ifakwe isakhiwo sokuvala esizihlanzayo, ivalvu ingakhuhla ngokuzenzakalelayo ama-slurry deposits kanye nezinsalela zamaminerali ebusweni bokuvala ngesikhathi sokuvulwa nokuvalwa, igcine indawo yokuvala ihlanzekile kanye nokusebenza kokuvala okuqinile isikhathi eside ukuvimbela ukuvuza okuphakathi. Ukuxhumeka okujwayelekile okune-flanged kwenza ukufakwa okulula nokusebenzayo, ukuqaqwa kanye nokugcinwa, okufanelekela ukuhlelwa kwamapayipi amancane futhi ayinkimbinkimbi ezimayini ezingaphansi komhlaba, ezimayini ezivulekile kanye namagumbi okupompa. Ngesilinganiso sokucindezela esingu-1.6MPa, ihlangabezana ngokugcwele nezidingo zokuthwala ingcindezi zamapayipi aphakathi naphansi okucindezela ukuthuthwa kwe-slurry yasemayini kanye nokukhishwa kwe-tailings.

Ekusetshenzisweni okungokoqobo, lolu chungechunge lwama-valve esango lommese lunciphisa ngempumelelo izindleko zokusebenza futhi luthuthukisa ukusebenza kahle kwamabhizinisi okumba. Umzimba we-valve encane uthatha isikhala esincane sepayipi, ufanela kahle amaphrojekthi amasha okumba kanye namaphrojekthi okuvuselela amapayipi amadala. Isakhiwo sokushayela ngesandla sinciphisa kakhulu izindleko zokuthengwa kwemishini kanye nokugcinwa ngaphandle kohlelo lokulawula oluyinkimbinkimbi oludingekayo. Izinga layo lokuhluleka eliphansi kakhulu linciphisa ngempumelelo imvamisa yokulungisa kanye nokulahlekelwa kokuvalwa kokukhiqiza. Ihlanganisa imininingwane eminingi ye-DN100, DN300 kanye ne-DN350, i-valve ifanisa amapayipi e-slurry anezinga lokugeleza elihlukile. Isekela ukwenza ngokwezifiso ngobuningi kanye nokunikezwa ngobuningi ngokulethwa okuzinzile ukuze kuhlangatshezwane nezidingo zokuthengwa kwamaphrojekthi okumba omhlaba wonke.

Zonke izivikelo zesango zensimbi engagqwali ezingama-304 ezenziwe ngesandla ze-mese gate zikhiqizwa ngokuhambisana nezindinganiso zezimboni zomhlaba wonke. Izivikelo ze-valve ngayinye zihlolwa ngokuqinile nge-hydrostatic, ukuhlolwa kokuvala kanye nokuqinisekiswa kokusebenza ngaphambi kokulethwa ukuqinisekisa ikhwalithi ezinzile nethembekile. Njengezivikelo ze-valve ezizinikele ezingabizi kakhulu ezimweni ze-slurry, zisetshenziswa kabanzi ekuhlungeni i-ore, ekuthuthweni kwe-slurry kanye nokwelashwa kwe-tailings ngaphakathi kokushisa okuphakathi okungu-100℃. Sinikeza imikhiqizo ejwayelekile, izinsizakalo zokukhetha ezenziwe ngokwezifiso kanye nezixazululo eziphelele zokulawula uketshezi lwamapayipi ezinkampanini zobunjiniyela bezimayini ze-B-end zomhlaba wonke, ezisebenza njengendlela engcono kakhulu ethuthukisiwe kunezivikelo zendabuko zezimo zokusebenza ze-slurry.