1. Inkcazo kunye neempembelelo eziphambili ze-Impeller Gap

I-gap ye-impeller ibhekiselele kwi-radial clearance phakathi kwe-impeller kunye ne-casing yempompo (okanye i-guide vane ring), ngokuqhelekileyo ukusuka kwi-0.2 mm ukuya kwi-0.5 mm. Lo msantsa uchaphazela kakhulu ukusebenza kwe  iimpompo ze turbine ezithe nkqo kwimiba emibini engundoqo:

● Ukulahleka kwe-Hydraulic: Izikhewu ezigqithisileyo zokwandisa ukuvuza, ukunciphisa ukusebenza kwe-volumetric; Izikhewu ezincinci kakhulu zinokubangela ukuguga kwe-friction okanye i-cavitation.

● Iimpawu zokuhamba: Ubungakanani be-Gap buchaphazela ngokuthe ngqo ukuhamba okufanayo kwi-outlet ye-impeller, ngaloo ndlela kuchaphazela intloko kunye nokusebenza kakuhle.

2. Isiseko sethiyori soPhuculo lwe-Impeller Gap

2.1 UPhuculo lweVolumetric ngokuSebenza kakuhle

Ukusebenza kweVolumetric (ηₛ) kuchazwa njengomlinganiselo wokuqukuqela kwesiphumo sokwenyani sokuhamba kwethiyori:

ηₛ = 1 − QQleak

apho i-Qleak kukuhamba okuvuza okubangelwa ngumsantsa obangelwa yi-impeller. Ukuphucula umsantsa kunciphisa kakhulu ukuvuza. Umzekelo:

● Ukunciphisa i-gap ukusuka kwi-0.3 mm ukuya kwi-0.2 mm kunciphisa ukuvuza nge-15-20%.

● Kwiimpompo zamanqanaba amaninzi, ukulungelelaniswa okongezelekayo kuwo onke amanqanaba kunokuphucula ukusebenza kakuhle ngokupheleleyo nge-5–10%.

2.2 Ukunciphisa iilahleko zeHydraulic

Ukuphucula i-gap kuphucula ukuhamba okufanayo kwi-outlet ye-impeller, ukunciphisa i-turbulence kwaye ngaloo ndlela kuncitshiswe ilahleko yentloko. Njengokuba:

● Ukulinganisa kweCFD kubonisa ukuba ukunciphisa i-gap ukusuka kwi-0.4 mm ukuya kwi-0.25 mm kunciphisa amandla e-kinetic ene-turbulent nge-30%, ehambelana nokunciphisa i-4-6% ekusebenziseni amandla e-shaft.

2.3 Ukwandiswa kweNtsebenzo yeCavitation

Izikhewu ezinkulu zinyusa uxinzelelo kwi-inlet, ukwandisa umngcipheko we-cavitation. Ukuphucula i-gap kuzinzisa ukuhamba kwaye iphakamisa i-NPSHr (intloko ye-net suction positive) i-margin, ngokukodwa isebenzayo phantsi kweemeko zokuhamba okuphantsi.

3. UQinisekiso loMfuniselo kunye neeCase zobuNjineli

3.1 Idatha yoVavanyo lweLabhoratri

Iziko lophando lenze iimvavanyo zokuthelekisa a impompo ye turbine enezigaba ezininzi ezithe nkqo (iiparamitha: 2950 rpm, 100 m³/h, 200 m intloko).

3.2 Imizekelo yokuSebenza kuShishino

● I-Petrochemical Circulation Pump Retrofit: Indawo yokucoca yanciphisa i-gap ye-impeller ukusuka kwi-0.4 mm ukuya kwi-0.28 mm, ifezekisa ukonga amandla ngonyaka we-120 kW·h kunye ne-8% yokunciphisa iindleko zokusebenza.

● I-Offshore Platform Injection Pump Optimization: Ukusebenzisa i-laser interferometry ukulawula i-gap (± 0.02 mm), ukusebenza kakuhle kwe-volumetric yempompo kuphuculwe ukusuka kwi-81% ukuya kwi-89%, ukuxazulula imiba yokungcangcazela ebangelwa zizithuba ezigqithisileyo.

4. Iindlela zokuSebenzisa kunye naManyathelo oPhumezo

4.1 IModeli yeMathematika yokuPhucula iGap

Ngokusekwe kwimithetho yokufana yempompo ye-centrifugal kunye ne-coefficients yokulungisa, ubudlelwane phakathi kwe-gap kunye nokusebenza kakuhle kukuba:

η = η₀(1 − k·δD)

apho u-δ lixabiso lomsantsa, D yi-impeller diameter, kunye no-k yi-empirical coefficient (ngokuqhelekileyo ngu-0.1–0.3).

4.2 IiTekhnoloji zokuPhumeza eziPhambili

●Uveliso oluchanekileyo: Oomatshini be-CNC kunye nezixhobo zokugaya zifezekisa ukuchaneka kwe-micro-meter-level (IT7-IT8) ye-impellers kunye ne-casings.

●Umlinganiselo we-In-Situ: Izixhobo zolungelelwaniso lweLaser kunye neegeyiji zokungqingqwa kwe-ultrasonic zijonga izikhewu ngexesha lendibano ukunqanda ukutenxa.

● Uhlengahlengiso Olunamandla: Kubushushu obuphezulu okanye imidiya ebolileyo, amakhonkco okutywinwa anokuthathelwa indawo ane-bolt-based-fine-tuning asetyenziswa.

4.3 Iingqwalasela

● I-Friction-Wear Balance: Izikhewu ezingaphantsi komgangatho zonyusa ukunxiba koomatshini; ubulukhuni bezinto eziphathekayo (umzekelo, i-Cr12MoV ye-impellers, i-HT250 yee-casings) kunye neemeko zokusebenza kufuneka zilinganiswe.

● Imbuyekezo yoKwandiswa kweThermal: Izikhewu ezigciniweyo (0.03-0.05 mm) ziyimfuneko kwizicelo eziphezulu zokushisa (umzekelo, iimpompo zeoli eshushu).

5. IiNdlela zekamva

●Uyilo lweDijithali: I-AI-based optimization algorithms (umzekelo, i-algorithms yemfuzo) iya kumisela ngokukhawuleza izithuba ezifanelekileyo.

●Uveliso oloNgezelelweyo: Ushicilelo lweMetal 3D luvumela uyilo oludibeneyo lwe-impeller-casing, ukunciphisa iimpazamo zendibano.

●UkuBekwa esweni ngobuchule: Izinzwa ze-Fiber-optic ezidityaniswe namawele edijithali ziya kwenza ukuba iliso lexesha lokwenyani le-gap kunye nengqikelelo yokuthotywa kokusebenza.

isiphelo

I-Impeller gap optimization yenye yeendlela ezithe ngqo zokwandisa impompo yempompo yeinjini ye-injini ethe nkqo. Ukudibanisa ukwenziwa ngokuchanekileyo, uhlengahlengiso oluguquguqukayo, kunye nokubeka iliso okukrelekrele kunokufikelela kwiinzuzo ezisebenzayo ze-5-15%, ukunciphisa ukusetyenziswa kwamandla, kunye neendleko zokugcina eziphantsi. Ngenkqubela phambili yokwenziwa kunye nohlalutyo, ukwenziwa kwe-gap kuya kuguqukela ekuchanekeni okuphezulu kunye nobukrelekrele, ibe bubuchwephesha obuphambili bokubuyisela amandla empompo.

Phawula: Izisombululo zobunjineli ezisebenzayo kufuneka zidibanise iipropati eziphakathi, iimeko zokusebenza, kunye nokunyanzeliswa kweendleko, eziqinisekisiwe ngohlalutyo lweendleko zomjikelo wobomi (LCC).