1. Nkọwa na Mmetụta dị mkpa nke oghere impeller

Ọdịiche nke impeller na-ezo aka na mkpochapụ radial n'etiti impeller na casing mgbapụta (ma ọ bụ mgbanaka ntụ ntụ), na-adịkarị site na 0.2 mm ruo 0.5 mm. Nke a ọdịiche budata emetụta arụmọrụ nke  multistage vetikal turbine nfuli n'akụkụ abụọ bụ isi:

● Mfu nke hydraulic: Ọpụpụ dị ukwuu na-eme ka mmiri na-agbapụta, na-ebelata arụmọrụ volumetric; Obere oghere karịrị akarị nwere ike ịkpata mgbakasị ahụ ma ọ bụ cavitation.

● Àgwà ndị na-asọ asọ: nha oghere na-emetụta kpọmkwem n'otu n'otu na-asọpụta na oghere impeller, si otú ahụ na-emetụta akụkụ isi na arụmọrụ.

2. Theoretical ndabere maka Impeller oghere Optimization

2.1 Mmelite arụmọrụ Volumetric

A kọwapụtara arụmọrụ volumetric (ηₛ) dị ka oke nke mpụta n'ezie na usoro usoro:

ηₛ = 1 - QQleak

ebe Qleak bu nrufu ntapu nke oghere impeller kpatara. Ịkwalite oghere ahụ na-ebelata nke ukwuu. Ọmụmaatụ:

● Mbelata oghere site na 0.3 mm ruo 0.2 mm na-ebelata ntapu site na 15-20%.

● Na nfuli multistage, mkpokọta njikarịcha n'ofe ọkwa nwere ike melite arụmọrụ zuru oke site na 5-10%.

2.2 Mbelata na mfu hydraulic

Ịkwalite ọdịiche ahụ na-eme ka ịdị n'otu dị n'otu n'ime oghere impeller, na-ebelata ọgbaghara ma si otú a na-ebelata isi ọnwụ. Dị ka ọmụmaatụ:

● CFD simulations na-egosi na ibelata ọdịiche ahụ site na 0.4 mm gaa na 0.25 mm na-ebelata ike kinetic na-akpata ọgba aghara site na 30%, kwekọrọ na mbelata 4-6% na oriri ọkụ.

2.3 nkwalite arụmọrụ cavitation

Nnukwu oghere na-eme ka nrụgide nrụgide dịkwuo elu na ntinye, na-abawanye ihe ize ndụ cavitation. Ịkwalite ọdịiche ahụ na-eme ka ọ dịkwuo mma ma na-ebuli oke NPSHr (net positive suction head), karịsịa dị irè n'okpuru ọnọdụ dị ala.

3. Nnwale nnwale na nke injinia

3.1 Data Test Laboratory

Otu ụlọ ọrụ nyocha mere ule atụnyere na a multistage vetikal turbine mgbapụta (nkeji: 2950 rpm, 100 m³ / h, 200 m isi).

3.2 Ọmụmaatụ Ngwa ụlọ ọrụ

● Petrochemical Circulation Pump Retrofit: Igwe nchacha na-ebelata oghere impeller site na 0.4 mm ruo 0.28 mm, na-enweta nchekwa ike kwa afọ nke 120 kW·h na mbelata 8% na ụgwọ ọrụ.

● Offshore Platform Injection Pump Optimization: Iji interferometry laser iji chịkwaa oghere ahụ (± 0.02 mm), arụmọrụ volumetric nke mgbapụta dị mma site na 81% ruo 89%, na-edozi nsogbu ịma jijiji kpatara oke oghere.

4. Ụzọ kachasị mma na usoro mmejuputa

4.1 Ụdị mgbakọ na mwepụ maka nkwalite oghere

Dabere na iwu myirịta centrifugal pump na ọnụọgụ mmezi, mmekọrịta dị n'etiti oghere na arụmọrụ bụ:

η = η₀ (1 - k·δD)

ebe δ bụ uru ọdịiche ahụ, D bụ dayameta impeller, na k bụ ọnụọgụ ọnụọgụgụ (nke 0.1-0.3).

4.2 Teknụzụ mmejuputa igodo

●Nrụpụta nke ọma: Igwe CNC na ngwaọrụ egweri na-enweta nkenke ọkwa micro-mita (IT7-IT8) maka ndị na-ebugharị na casings.

●Ntụnye n'ime ọnọdụ: Ngwá ọrụ nkwụnye laser na ultrasonic ọkpụrụkpụ gauges nyochaa oghere n'oge mgbakọ iji zere ndịiche.

● Ndozi dị ike: Maka mgbasa ozi na-ekpo ọkụ ma ọ bụ na-emebi emebi, a na-eji mgbanaka mkpuchi dochie ya na mma-nkwado nke bolt.

4.3 Ntụle

● Nleba anya nkebi-eyi: obere oghere na-abawanye n'ibu; ike ihe onwunwe (dịka, Cr12MoV maka impellers, HT250 maka casings) na arụ ọrụ ọnọdụ ga-kwesịrị ekwesị.

● Nkwụghachi ụgwọ Mgbasa ọkụ: Ọdịiche echekwara (0.03-0.05 mm) dị mkpa maka ngwa okpomọkụ dị elu (dịka ọmụmaatụ, nfuli mmanụ ọkụ).

5. Ụdị Ọdịnihu

●Nhazi dijitalụ: Algọridim njikarịcha dabere na AI (dịka ọmụmaatụ, algọridim mkpụrụ ndụ ihe nketa) ga-ekpebi oghere kacha mma ngwa ngwa.

●Nrụpụta mgbakwunye: Mbipụta 3D metal na-enyere aka n'ụdị impeller-casing agbakwunyere, na-ebelata njehie mgbakọ.

●Nleba anya nke ọma: Ihe mmetụta Fiber-optic jikọtara ya na ejima dijitalụ ga-eme ka nleba anya oghere dị adị na amụma mmebi arụmọrụ.

mmechi

Impeller gap optimization of impeller bụ otu n'ime ụzọ kachasị emetụta iji kwalite arụmọrụ mgbapụta igwe kwụ ọtọ multistage. Ijikọta n'ichepụta nkenke, mgbanwe dị ike, na nleba anya nwere ọgụgụ isi nwere ike nweta uru arụmọrụ nke 5-15%, belata oriri ume, yana ọnụ ahịa mmezi dị ala. Site n'ọganihu n'ichepụta na nyocha, njikarịcha oghere ga-etolite n'ụzọ ziri ezi na ọgụgụ isi dị elu, na-aghọ teknụzụ bụ isi maka nrụpụta ike mgbapụta.

Cheta na: Ngwọta injinịa bara uru ga-ejikọrịrị ihe ndị na-ajụ ase, ọnọdụ arụ ọrụ, yana mgbochi ọnụ ahịa, nke akwadoro site na nyocha usoro ọnụọgụ ndụ (LCC).