Chiyambi chachidule ndi ubwino wa axial flow turbine

Pali mitundu yambiri yamagetsi a hydro.Lero, tiyeni tifotokoze mwatsatanetsatane za jenereta ya axial-flow hydro.Kugwiritsa ntchito jenereta ya axial-flow hydro generator m'zaka zaposachedwa ndikukula kwamutu wam'madzi ndi kukula kwakukulu.Kupanga ma turbines apanyumba axial-flow turbines nakonso mwachangu.Pali mitundu iwiri ya ma axial-flow paddle turbines omwe amaikidwa pamalo opangira magetsi a Gezhouba, amodzi omwe ali ndi mainchesi othamanga a 11.3m, omwe ndi mainchesi othamanga a ma turbines ofanana padziko lonse lapansi.Nazi ubwino ndi kuipa kwa wapakatikati axial flow turbine.

Ubwino wa axial flow turbine
Poyerekeza ndi turbine Francis, axial-flow turbine ali ndi zotsatirazi:
1. Kuthamanga kwakukulu kwapadera ndi makhalidwe abwino a mphamvu.Chifukwa chake, liwiro lake lagawo ndikuyenda kwagawo ndizokwera kuposa za Francis turbine.Pansi pamutu womwewo ndi zinthu zomwe zimatulutsa, zimatha kuchepetsa kwambiri kukula kwa hydraulic turbine generator unit, kuchepetsa kulemera kwa unit ndikusunga zinthu zakuthupi, kotero zimakhala ndi phindu lalikulu lazachuma.
2. Mawonekedwe a pamwamba ndi roughness pamwamba pa masamba othamanga a axial-flow turbine ndizosavuta kukwaniritsa zofunikira pakupanga.Chifukwa ma turbine a axial flow propeller turbine amatha kusinthasintha, kuchuluka kwake kumakhala kokwanira kuposa kwa Francis turbine.Pamene katundu ndi mutu zikusintha, dzuwa limasintha pang'ono.
3. Masamba othamanga a axial flow paddle turbine amatha kupasuka kuti athandizire kupanga ndi kuyendetsa.

Chifukwa chake, turbine ya axial-flow turbine imakhala yokhazikika pamagawo akulu opangira, imakhala ndi kugwedezeka pang'ono, ndipo imakhala yogwira ntchito kwambiri komanso yotulutsa.Pakati pamutu wamadzi otsika, pafupifupi m'malo mwa turbine ya Francis.M'zaka makumi angapo zapitazi, yapanga chitukuko chachikulu komanso kugwiritsa ntchito kwambiri potengera mphamvu ya unit imodzi ndi mutu wamadzi.

3, Kuipa kwa axial flow turbine
Komabe, turbine ya axial-flow ilinso ndi zovuta zake ndipo imaletsa kukula kwake kogwiritsa ntchito.Zoyipa zake zazikulu ndi izi:
1. Chiwerengero cha masamba ndi ang'onoang'ono ndi cantilever, kotero mphamvu ndi osauka ndipo sangathe kugwiritsidwa ntchito kwa sing'anga ndi mkulu mutu hydropower stations.
2. Chifukwa cha kuchuluka kwa ma unit ndi liwiro lalikulu la unit, ili ndi kutalika kocheperako kuposa turbine ya Francis pansi pamutu womwewo wamadzi, zomwe zimapangitsa kuzama kwakukulu kofukula komanso ndalama zambiri zamakina opangira magetsi.

Malinga ndi zolakwika zomwe zili pamwambapa za turbine ya axial-flow turbine, mutu wa turbine wa axial-flow turbine umasinthidwa mosalekeza potengera zida zatsopano zokhala ndi mphamvu zambiri komanso kukana kwa cavitation popanga ma turbine ndikuwongolera kupsinjika kwa masamba pamapangidwe.Pakalipano, mutu wa ntchito wamtundu wa axial flow propeller turbine ndi 3-90 m, womwe walowa m'dera la Francis turbine.Mwachitsanzo, kutulutsa kwa * * * makina amodzi a turbine axial flow propeller turbine ndi 181700 kW, * * * mutu ndi 88m, ndipo m'mimba mwake wothamanga ndi 10.3M.Kutulutsa kamodzi kwa turbine ya axial flow propeller yopangidwa ku China ndi 175000 kW, * * * mutu ndi 78m, ndipo m'mimba mwake * * * wothamanga ndi 11.3m.Axial flow fixed propeller turbine ali ndi masamba okhazikika komanso mawonekedwe osavuta, koma sangagwirizane ndi masiteshoni amagetsi amadzi ndi kusintha kwakukulu pamutu wamadzi ndi katundu.Kwa malo akuluakulu opangira magetsi opangira madzi okhala ndi mutu wokhazikika wamadzi ndikugwira ntchito ngati katundu woyambira kapena mayunitsi angapo, zitha kuganiziridwanso pambuyo poyerekeza zachuma pomwe mphamvu yamagetsi yanyengo imakhala yambiri.Kutalika kwake kwamadzi ndi 3-50m.Axial flow propeller turbine nthawi zambiri imatenga chipangizo choyima, ndipo ntchito yake imakhala yofanana ndi ya turbine ya Francis, Kusiyana kwake ndikuti katundu akasintha, sikuti amangoyendetsa kasinthasintha wa kalozera, komanso amawongolera kasinthasintha wothamanga tsamba kusunga mkulu dzuwa.

Tidayambitsanso turbine ya Francis m'mbuyomu.Pakati pa ma generator a hydro, turbine ya Francis ndi yosiyana kwambiri ndi turbine ya axial-flow.Mwachitsanzo, mawonekedwe a othamanga awo ndi osiyana.Masamba a turbine ya Francis amakhala pafupifupi kufananiza tsinde lalikulu, pomwe axial flow turbine amakhala pafupi ndi shaft yayikulu.