Dej Turbine Runners: Hom thiab Technical Specifications

Cov dej turbines yog cov khoom tseem ceeb hauv cov tshuab hluav taws xob, hloov lub zog ntawm cov dej ntws los yog cov dej poob rau hauv lub zog siv tshuab. Nyob rau hauv lub plawv ntawm cov txheej txheem no lus dagtus khiav, lub rotating ib feem ntawm lub turbine uas interacts ncaj qha nrog dej ntws. Tus qauv tsim, hom, thiab cov kev qhia tshwj xeeb ntawm tus khiav yog qhov tseem ceeb hauv kev txiav txim siab lub tshuab ua haujlwm, kev ua haujlwm ntawm lub taub hau, thiab daim ntawv thov scenarios.

1. Kev faib tawm ntawm Dej Turbine Runners

Dej turbine runners feem ntau muab faib ua peb pawg loj raws li hom dej ntws uas lawv ua:

A. Impulse Runners

Impulse turbines ua haujlwm nrog cov dav hlau dej siab tshaj tawm tawm tsam cov neeg sib tw khiav hauv cov huab cua siab. Cov khiav no yog tsim los rausiab taub hau, low-flowdaim ntawv thov.

• Pelton Khiav:

  • Qauv: Diav-zoo li lub thoob mounted ntawm lub periphery ntawm ib lub log.

  • Lub taub hau ntauNtev: 100-1800 meters.

  • Ceev: Tsawg kev sib hloov ceev; feem ntau yuav tsum tau ceev nce.

  • Daim ntawv thov: Cov cheeb tsam roob, off-grid micro-hydropower.

B. Reaction Runners

Cov tshuaj tiv thaiv turbines ua haujlwm nrog dej siab hloov maj mam thaum nws dhau los ntawm tus khiav. Cov neeg khiav dej num no submerged thiab ua haujlwm nyob rau hauv dej siab.

• Francis Khiav:

  • Qauv: Sib xyaw ntws nrog sab hauv radial thiab axial txav.

  • Lub taub hau ntauNtev: 20-300 meters.

  • Kev ua tau zoo: Siab, feem ntau tshaj 90%.

  • Daim ntawv thov: Dav siv nyob rau hauv nruab nrab-lub taub hau hydro chaw nres tsheb.

• Kaplan khiav:

  • Qauv: Axial khiav khiav nrog adjustable hniav.

  • Lub taub hau ntauNtev: 2-30 meters.

  • Nta: Adjustable blades tso cai rau kev ua haujlwm siab nyob rau hauv ntau qhov sib txawv.

  • Daim ntawv thov: Low-head, high-flow Rivers thiab tidal applications.

• Propeller Khiav:

  • Qauv: Zoo ib yam li Kaplan tab sis nrog cov hniav ruaj khov.

  • Kev ua tau zoo: Optimal tsuas yog nyob rau hauv tas li ndlwg tej yam kev mob.

  • Daim ntawv thov: Cov chaw me me nrog cov dej ntws ruaj khov thiab lub taub hau.

C. Lwm yam Khiav

• Turgo Khiav:

  • Qauv: Dej dav hlau ntaus tus khiav ntawm lub kaum sab xis.

  • Lub taub hau ntauNtev: 50-250 meters.

  • Qhov zoo: Kev sib hloov ceev dua li Pelton, kev tsim kho yooj yim dua.

  • Daim ntawv thov: Me-rau-nruab nrab hydropower chaw nres tsheb.

• Cross-Flow Runner (Banki-Michell Turbine):

  • Qauv: Dej ntws los ntawm tus khiav hla, ob zaug.

  • Lub taub hau ntauNtev: 2-100 meters.

  • Nta: Zoo rau me me hydropower thiab sib txawv ntws.

  • Daim ntawv thov: Off-grid systems, mini hydro.

2. Cov ntsiab lus tseem ceeb ntawm cov neeg khiav dej num

Ntau hom kev sib tw yuav tsum tau ua tib zoo saib xyuas lawv cov txheej txheem kev ua haujlwm kom ntseeg tau tias kev ua haujlwm zoo:

3. Cov txheej txheem xaiv

Thaum xaiv ib hom kev khiav, engineers yuav tsum xav txog:

• Lub taub hau thiab Flow: Txiav txim siab seb puas yuav xaiv qhov impulse lossis cov tshuaj tiv thaiv.

• Qhov chaw nyob: River variability, sediment load, seasonal change.

• Kev Ua Haujlwm Flexibility: Xav tau cov hniav hloov kho los yog ntws adaptation.

• Nqi thiab Kho: Cov neeg khiav dej num yooj yim xws li Pelton lossis Propeller yooj yim los tswj.

4. Yav tom ntej Trends

Nrog rau kev nce qib hauv kev suav cov dej dynamics (CFD) thiab 3D hlau luam ntawv, turbine runner tsim tau hloov mus rau:

• Higher efficiency nyob rau hauv sib txawv flows

• Customized runners rau qhov chaw tshwj xeeb

• Kev siv cov ntaub ntawv sib xyaw ua kom sib zog thiab corrosion-resistant hniav

Xaus

Dej turbine runners yog lub hauv paus ntawm hydropower hloov dua siab tshiab. Los ntawm kev xaiv cov neeg khiav dej num uas tsim nyog thiab ua kom zoo dua nws cov kev tsis sib xws, cov chaw tsim hluav taws xob muaj peev xwm ua tiav kev ua haujlwm siab, kev pab lub neej ntev, thiab txo kev cuam tshuam ib puag ncig. Txawm hais tias rau me me hluav taws xob nyob deb nroog lossis cov kab sib txuas loj loj, tus neeg khiav dej num tseem yog tus yuam sij rau kev qhib lub peev xwm ntawm hydropower.