Ohlangothini lokungena lwe-slurry blade diameter Ehlangothini lwe-impeller lokuthatha indawo ephakathi, njengoba umzila wokugeleza wombuthano obhaliwe, umbuthano oqoshiwe oyi-centroid uliphinda kabili ibanga le-eksisi yohlangothi lokungena lobubanzi be-blade D1, oluboniswe kuMfanekiso 5- 5 .
Ububanzi D1 bohlangothi lokungena lwensingo ngokuvamile lungabonakala ngesivinini esithize ns : Ngokuvamile , ukukhulisa inani lama-blade kungathuthukisa ukugeleza koketshezi , ukwanda okufanelekile kwekhanda lepompo , kodwa ukwandisa inani lokulahlekelwa ukungqubuzana kweqabunga leqabunga kungakhula , ukunciphisa ukugeleza endaweni yokugeleza .
Ngakho-ke, ukwanda kwenani lamaqabunga kakhulu, hhayi nje ukunciphisa ukusebenza kahle nokwenza ukuwohloka kokusebenza kwe-impeller cavitation, kodwa futhi kubangele i-pump performance curves hump (bheka Isahluko V). I-engeli ye-blade ngaphansi kwephakheji efanayo, inciphisa inani lama-blades, i-blade ngayinye yomthwalo iyanda, indima yokuphambukisa uketshezi oluphansi, kodwa futhi yehlisa ikhanda lepompo. Ngandlela-thile ingaphansi kwenani lemijikelezo yepompo , okufanele yenzeke ngendlela yobude bezikhala zeblade , eziboniswe kuMfanekiso 5-10 .
Lokhu kuzoqinisekisa inani elanele lamaqabunga , kodwa futhi ukuvimbela ukuvinjelwa kwe-impeller inlet. 8 Qinisekisa ukuthi i-engeli ye-blade inlet β1 ebekwe I-engeli ye-blade inlet ibekwe emnyango we-blade, ubuso be-blade be-tangent (ukukhuluma ngokuqinile, ingaphezulu kufanele libe kumugqa wokugeleza we-blade tangent bone ) i-engeli phakathi kwe-tangent. i-tangent eyindilinga , njengoba kuboniswe kuMfanekiso 5-6. Kucatshangwa ukuthi uketshezi luyimpompi yokugeleza okujikelezayo,umkhiqizi wepompo ye-slurryngonxantathu wesivinini sibonisa: Ekunqumeni i-engeli yokungena engu-β1 lapho i-engeli ethi △ β ikhetha isizathu:
( 1 ) ngaphambi kokuthi uketshezi lungene ku-impeller , oseluvele lungaphansi kwegumbi lokumunca , umthelela we-impeller shaft noma ukunyakaza okuzungezayo (okungukuthi i-pre- spin ), ukwandisa i-engeli yokuhlasela ukucabangela ithonya le-pre-swirl ukunciphisa umthelela wokulahlekelwa uketshezi .
( 2 ) ithatha i-engeli ephozizithi yokuhlasela , i-coefficient yesango lokungena eliminyene . , Ukunciphisa, okungukuthi ukwandisa indawo yokungena ye-blade, ukuthuthukisa ukugeleza koketshezi, kungathuthukisa kancane ukusebenza kwe-cavitation yepompo.
Egunjini lokumunca iphampu yeshubhu eliyindilinga , uketshezi lungena ku-impeller ngaphambi kokuba kushintshwe ngaphambili kuncane, kodwa kuhhafu yegumbi lokudonsa elivunguzayo ngu-. I-prerotator inkulu kakhulu, ngakho-ke i-angle yokuhlasela kufanele icatshangelwe lapho kukhethwa isakhiwo segumbi lokudonsa ngendlela ethintekile. I-engeli yokumelana ne-cavitation yepompo ngezinga elithile.
Ukuhlolwa kubonise ukuthi i-angle enhle yohla lokuhlasela, ukuguqulwa kwe-angle yokuhlasela ku-pump cavitation resistance kunomphumela omncane, ukwandisa i-angle yokuhlasela kungabambezela izimo zokugeleza kwepompo ekusebenzeni okukhulu kwe-anti-cavitation lapho kusebenza ukuwohloka okungazelelwe. Nokho, uma i-engeli ephozithivu yosuku ingaphezu kuka-200, izobangela ukusebenza kahle okuncishisiwe. Uma uthatha i-engeli engalungile yokuhlasela , ukumelana ne-cavitation yephampu kubi kakhulu .
Isikhathi sokuthumela: Jul-13-2021