Ngenxa yokuba ukusetyenziswa kwempompo yodaka kubanzi kakhulu, ubume bolwelo bugqithiselwa ngamanye amaxesha bukwangumahluko omkhulu, iimeko ezahlukeneyo zomsebenzi zineemfuno ezahlukeneyo zokuhamba kwempompo kunye noxinzelelo, ukuze kuhlangatyezwane neemfuno zempompo yokusebenza kwiindawo ezahlukeneyo. , kukho iintlobo ezininzi zempompo, ngokuqhelekileyo zinokuhlelwa ngokomgaqo wokusebenza wempompo, kwaye ukusetyenziswa kwayo kunokubonelela ngokuphakamisa. Ngokomgaqo wokusebenza wempompo unokwahlulwa ube yimpompo yokufuduka elungileyo, impompo yempompo kunye nolunye uhlobo lweempompo zeendidi ezintathu
Iimpompo zokufuduka ezilungileyo zixhomekeke kutshintsho lwevolumu oluveliswa ngamaxesha athile ukufunxa umthamo wokusebenza kunye nolwelo lokukhupha, xa umthamo womsebenzi usanda, ulwelo lokufunxa impompo; xa kuncipha, ulwelo lokukhupha impompo. Iimpawu zeKinematic ngokomsebenzi wolu hlobo lwe-Li zikwahlulwe zibe:
1. Indlela yokusebenza yempompo ephindaphindayo yokuphindaphinda intshukumo. Olu hlobo lwempompo yimpompo yepiston, ipiston, i-diaphragm chestnut kunye nokunye.
2.Ii-arhente zeempompo ze-Rotary zokujikeleza kwe-axis esisigxina. Olu hlobo lwempompo yimpompo yegiya, impompo yesikrufu,imboni yempompo yegrabileiimpompo ze-vane ezityibilikayo.
I-vane chestnut ithembele enye okanye ezininzi zokujikeleza kwesantya esiphezulu se-impeller ukukhuthaza ukuhamba kwamanzi, ukufezekisa ukuthuthwa kwamanzi. Ngokolwelo kwicala lokuhamba kwempompo yempompo enempompo ngokwahlulahlulwe kwaba:
I-1.I-pump fluid ihamba ngokukhawuleza ngempompo, amandla atyhala ukuhamba kwamanzi xa amandla e-centrifugal eveliswa ngokujikeleza kwe-impeller.
(2) Ulwelo lwe-axial luhamba nge-axial ngempompo, amandla atyhala ulwelo lwe-axial thrust eyenziwe xa ujikelezo.
3. Ulwelo lwempompo oluhambayo kwimpompo luhamba kwi-shaft yempompo kwi-angle ethile, amandla atyhala ukuhamba kwamanzi xa amandla e-centrifugal eveliswa ngokujikeleza kwe-impeller kunye ne-axial thrust force.
I-4 - I-Vortex impompo yolwelo kwimpompo yokuhamba kwe-vortex ethe nkqo, exhomekeke kwi-impeller ejikelezayo ikhuthaza i-vortices eyenziwa yintshukumo yokufunxa ulwelo kunye nokukhupha ulwelo.
Ezinye iintlobo zeempompo zixhomekeke kakhulu kolunye ulwelo (ulwelo, irhasi) amandla okanye amandla ekinetic hydrostatic transmission fluid. Ngaloo ndlela, ikwabizwa ngokuba yimpompo ye-hydrodynamic, njengeempompo ze-jet, i-chestnut yamanzi, njl.
Iiparamitha ezisisiseko zeempawu eziphambili zempompo yegrabile inokulandelayo:
1, ukuhamba kwe-Q
Ukuhamba sisixa sempompo yegrabile yolwelo kwiyunithi yexesha lonikezelo (umthamo okanye umgangatho).
Ukuhamba komthamo kunye no-Q uthe, iyunithi yile: m3/s, m3/h, l/s njl.
Ukuhamba kobunzima kunye noQm uthe, iyunithi yile: t/h, kg/s.
Ubudlelwane phakathi kokuhamba kobunzima kunye nokuhamba komthamo:
Qm= ρ Q
Kwifomula ρ — ingxinano yolwelo (kg/m3, t/m3), amanzi obushushu obuqhelekileyo P =1000kg/m3.
2, intloko kaH
Intloko bubunzima beyunithi yempompo yegrabile yolwelo empompayo ephuma kumazwe angaphandle kwimpompo yegrabile (impompo yegrabile yokungena kwigrabile) ukuya kwigrabile kwindawo yokuphuma yempompo (ipump outlet flange gravel) ukongezwa kwamandla. Amandla asebenzayo lulwelo lweNewtonian olufunyenwe ngempompo yegrabile. Iyunithi ngu-N? m/N=m, umphakamo wolwelo ikholamu yegrabile yempompo yokumpompa ulwelo, imikhwa, ekubhekiswa kuyo njengeM.
3, isantya n
Isantya sisantya seyunithi yempompo yegrabile yexesha, ebonakaliswa sisimboli n, iyunithi ye-r/min.
4, NPSH NPSH
I-NPSH ikwabizwa ngokuba yi-net positive suction head, ibonakaliswa ikakhulu iiparameters zecavitation performance. I-NPSH kusetyenziso lwasekhaya Δ H.
kg/m3）
I-5, amandla kunye nokusebenza kakuhleIsiseko sokhetho lwempompo eludaka
I-Gravel pump power idla ngokubhekisela kumandla okufakwayo, okuyiyo inkuthazo yokuqala yeza i-gravel pump shaft amandla, ngoko ikwabizwa ngokuba yi-shaft power, emele ngu-P;
Impompo yegravel yamandla esebenzayo ikwabizwa ngokuba yimveliso yamandla, emelwe nguPe. Yiyunithi yamandla esebenzayo yexesha ukusuka kunikezelo lwempompo yegrabile kulwelo olukwimpompo yegrabile.
Ngenxa yokuba ukuphakamisa amandla asebenzayo kwimpompo yegrabile yemveliso yeyunithi yobunzima bolwelo olufunyenwe kwimpompo yegrabile, ke intloko kunye nesantya sokuhamba kobunzima kunye nokukhawuleziswa komxhuzulane, yiyunithi yexesha ukusuka kulwelo lwempompo yegrabile efunyenwe amandla asebenzayo - oko kukuthi impompo yegrabile amandla:
Pe= ρ gQH (W) = igamma QH (W) ifomula ρ ingxinano — ulwelo lwempompo yegrabile (kg/m3);
I-gamma enzima - ulwelo lwempompo yegrabile (N/m3);
Q - ukuhamba kwempompo yegrabile (m3 / s);
H - intloko yempompo yegrabile (m);
G — ukukhawuleza komxhuzulane (m/s2).
Amandla e-Shaft P kunye namandla Pe yokulahlekelwa kwamandla epompo yegrabile, ubungakanani bomlinganiselo wempompo yegrabile. Ukusebenza kwempompo yeGravel njengamandla asebenzayo kunye nomlinganiselo wamandla we-shaft, usebenzisa i-η.
Ixesha lokuposa: Jul-13-2021