E nwere ọtụtụ ụdị ihe eji emepụta mmiri. Taa, ka anyị webata ihe eji emepụta mmiri nke na-emepụta mmiri nke axial-flow n'ụzọ zuru ezu. Ojiji nke ihe eji emepụta mmiri nke axial-flow n'afọ ndị na-adịbeghị anya bụ mmepe nke isi mmiri dị elu na nnukwu nha. Mmepe nke turbines nke axial-flow n'ime ụlọ dịkwa ngwa ngwa. E nwere ụdị turbines abụọ nke axial-flow paddle arụnyere n'ọdụ ike mmiri nke Gezhouba wuru, otu n'ime ha nwere dayameta ọsọ nke 11.3m, nke bụ dayameta ọsọ nke turbines ndị yiri ya n'ụwa. Lee uru na ọghọm nke turbines nke na-emepụta mmiri nke etiti.
Uru nke turbine axial flow
Ma e jiri ya tụnyere Francis turbine, axial-flow turbine nwere isi uru ndị a:
1. Ọsọ dị elu na njirimara ike dị mma. Ya mere, ọsọ nkeji ya na mmiri nkeji ya dị elu karịa nke Francis turbine. N'okpuru otu isi na ọnọdụ mmepụta, ọ nwere ike ibelata nha nke igwe jenerato turbine hydraulic nke ukwuu, belata ibu nke unit ma chekwaa oriri ihe, yabụ ọ nwere uru akụ na ụba dị elu.
2. Ọdịdị elu na oke iru ala nke agụba ndị na-agba ọsọ nke turbine axial-flow dị mfe imezu ihe achọrọ n'imepụta. N'ihi na agụba nke turbine axial flow propeller nwere ike ịtụgharị, arụmọrụ nkezi dị elu karịa nke turbine Francis. Mgbe ibu na isi gbanwere, arụmọrụ ya anaghị agbanwe agbanwe.
3. Enwere ike ịgbasa agụba ndị na-agba ọsọ nke turbine axial flow paddle iji mee ka mmepụta na njem dị mfe.
Ya mere, turbine axial-flow na-anọgide na-adịgide n'ọtụtụ ọrụ, ọ naghị enwe mkpọtụ dị ukwuu, ọ na-arụkwa ọrụ nke ọma ma na-arụpụta ihe nke ọma. N'ime oke isi mmiri dị ala, ọ fọrọ nke nta ka ọ dochie turbine Francis. N'ime iri afọ ndị na-adịbeghị anya, o meela nnukwu mmepe na ojiji sara mbara n'ihe gbasara ikike otu unit na isi mmiri.
3, Ọghọm nke turbine axial flow
Agbanyeghị, turbine axial-flow nwekwara ọghọm ma na-ebelata oke ojiji ya. Isi ọghọm ya bụ:
1. Ọnụọgụ agụba dị obere ma nwee ike ime ka ihe ghara ịdị ike, yabụ ike adịghị mma, a pụghịkwa itinye ya n'ọdụ ọkụ eletrik dị n'etiti na n'elu.
2. N'ihi nnukwu mmiri ọkụ eletrik na ọsọ dị elu nke unit ahụ, ọ nwere obere ogologo mmiri ọkụ karịa Francis turbine n'okpuru otu isi mmiri ahụ, nke na-ebute nnukwu omimi igwu ala na nnukwu itinye ego na ntọala ọdụ ike.
Dịka ihe ndị a kpọtụrụ aha n'elu nke turbine axial-flow si dị, isi ngwa nke turbine axial-flow na-akawanye mma site n'iji ihe ọhụrụ nwere ike dị elu na iguzogide cavitation na mmepụta turbine ma na-eme ka ọnọdụ nrụgide nke agụba dị mma. Ugbu a, isi ngwa nke turbine axial flow propeller bụ 3-90 m, nke abatala na mpaghara turbine Francis. Dịka ọmụmaatụ, mmepụta nke otu igwe * * * nke turbine axial flow propeller mba ọzọ bụ 181700 kW, isi * * * bụ 88m, na dayameta onye na-agba ọsọ bụ 10.3M. Mmepụta otu nke turbine axial flow propeller emepụtara na China bụ 175000 kW, isi * * * bụ 78m, na dayameta nke onye na-agba ọsọ * * * bụ 11.3m. Turbine axial flow fixed propeller nwere agụba edobere na nhazi dị mfe, mana ọ nweghị ike ịgbanwe na ọdụ ike mmiri nwere nnukwu mgbanwe na isi mmiri na ibu. Maka nnukwu ọdụ ike mmiri nwere isi mmiri kwụsiri ike ma na-eje ozi dị ka ibu ntọala ma ọ bụ ọtụtụ nkeji, enwere ike ịtụle ya mgbe atụnyere akụ na ụba mgbe ike eletrik oge dị ukwuu. Oke isi mmiri ya dị na ya bụ 3-50m. Turbine axial flow propeller na-ejikarị ngwaọrụ kwụ ọtọ, usoro ọrụ ya dịkwa otu nke Francis turbine. Ihe dị iche bụ na mgbe ibu ahụ gbanwere, ọ bụghị naanị na ọ na-achịkwa ntụgharị nke vane nduzi, kamakwa ọ na-achịkwa ntụgharị nke agụba na-agba ọsọ iji nọgide na-arụ ọrụ nke ọma.
Anyị webatarakwa turbine Francis mbụ. N'ime ndị na-emepụta hydro, turbine Francis dị nnọọ iche na turbine axial-flow. Dịka ọmụmaatụ, ụdị nhazi nke onye na-agba ọsọ ha dị iche. Agụba nke turbine Francis fọrọ nke nta ka ọ bụrụ ihe yiri isi shaft, ebe nke turbine axial flow fọrọ nke nta ka ọ bụrụ ihe kwụ ọtọ na isi shaft.
Oge ozi: Eprel-19-2022
