Abahlinzeki bemishini yempendulo yamandla yeziguquli zefrikhwensi bakukhumbuza ukuthi ukonga amandla eziguquli zefrikhwensi kubonakala kakhulu ekusetshenzisweni kwamafeni namaphampu amanzi. Ukuze kuqinisekiswe ukwethembeka kokukhiqiza, imishini ehlukahlukene yokukhiqiza idizayinelwe nge-margin ethile yedrayivu yamandla. Lapho injini ingakwazi ukusebenza ngomthwalo ogcwele, ngaphezu kokuhlangabezana nezidingo zokushayela amandla, i-torque eyeqile ikhulisa ukusetshenziswa kwamandla okusebenzayo, okuholela ekumoshweni kwamandla kagesi. Indlela yendabuko yokulawula isivinini yemishini efana namafeni namaphampu iwukulungisa umthamo wokuphakelwa komoya kanye namanzi ngokulungisa ukuvuleka kwe-inlet noma i-outlet baffles nama-valve. Le ndlela inamandla okufaka aphezulu futhi idla inani elikhulu lamandla ngesikhathi sokuvimbela ama-baffles nama-valve. Uma usebenzisa ukulawulwa kwesivinini esishintshashintshayo, uma isidingo sokugeleza sincishisiwe, singahlangatshezwana naye ngokunciphisa iphampu noma isivinini sefeni.
Ngokusho kwe-fluid mechanics, i-P (amandla) = Q (izinga lokugeleza) × H (ingcindezi), izinga lokugeleza elingu-Q lilingana namandla wejubane elijikelezayo N, ingcindezi H ilingana nesikwele sejubane elijikelezayo N, futhi amandla P alingana ne-cube yejubane elijikelezayo N. Uma ukusebenza kahle kwepompo yamanzi kuyancipha ngokulinganayo, izinga lokugeleza kwamanzi lingancipha ngokulinganayo, lapho isivinini sokugeleza sincipha ngokulinganayo, lapho i-N. kulokhu, amandla okukhipha i-shaft P ayancipha ebudlelwaneni be-cubic. Ukusetshenziswa kwamandla kwenjini yepompo yamanzi kucishe kulingane nesivinini sokujikeleza. Lapho izinga lokugeleza elidingekayo Q lehla, imvamisa yokuphuma kwe-inverter ye-Delta ingalungiswa ukuze kuncishiswe ngokulinganayo isivinini semoto n. Kuleli qophelo, amandla P wemoto kagesi azokwehla kakhulu ngokuya ngobudlelwano be-cubic, konga amandla angama-40% kuye kwangama-50% uma kuqhathaniswa nokulungisa ama-baffle nama-valve, ngaleyo ndlela kufezwe umgomo wokonga amandla.
Isibonelo, lapho uklama futhi ufaka amaphampu amanzi, ukusetshenziswa okuphezulu kuyacatshangelwa futhi umkhawulo othile ushiywe. Kodwa-ke, ekusebenzeni okusebenzayo, kunzima ukufeza ukusetshenziswa okuphezulu, okuholela esimweni esithi "ihhashi elikhulu elidonsa imoto encane". Izindlela zendabuko zokulawula ukugeleza zitholakala ngokulawula ukuvulwa kwama-valve. Ngenxa yalokho, ukusebenza kahle kwepompo yamanzi kungama-30% -60% kuphela, okungagcini nje ngezindleko eziphakeme kodwa futhi kuchitha amandla kagesi abalulekile.
Ubuchwepheshe bokulawula idrayivu eguquguqukayo:
Ngenxa yokuthi imithwalo yephampu yamanzi ingeye-square torque loads, izinga lokugeleza kwayo (Q), ikhanda (H), amandla (P), nesivinini semoto (n) kuhlobene kanjena.
Q1/Q0=n1/n0 H1/H0=(n1/n2)^2 P1/P0=(n1/n2)^3
I-Q0, H0, P0, n0 amanani angaphansi kwezimo zokusebenza ezilinganiselwe.
I-Q1, i-H1, i-P1, ne-n1 amanani asesimweni sangempela sokusebenza.
Ngakho-ke, ngokushintsha ijubane layo ukuze lilawule izinga lokugeleza kwalo ukuze lifinyelele izinhloso ezingokoqobo, ubuchwepheshe bokuguqula imvamisa bushintsha isivinini semoto ngokushintsha imvamisa yokunikezwa kwamandla, futhi amandla ashintsha ngokulingana namandla esithathu ejubane, onga amandla kakhulu. Ngaphezu kwalokho, inezici zokusebenza okulula, ukugcinwa okulula, ukusebenza okuzinzile, nobubanzi bejubane elibanzi, okwenza isetshenziswe kabanzi emkhakheni wamaphampu amanzi.