Kev Cai Hydrogen Gas-rau-Dej Txias Rau Thermal Fais Fab Chaw Nres Tsheb Generator Overhaul Hloov
Thermal fais fab nroj tsuag turbo-generators hloov thermal zog rau hauv hluav taws xob. Cov chav muaj peev xwm loj ua rau muaj cua sov loj heev los ntawm stator winding, rotor winding thiab stator core. Lub tshuab hluav taws xob cua txias tshem tawm cov cua sov no kom ua kom cov rwb thaiv tsev nyob hauv qhov kub thiab txias. Cov thev naus laus zis txias txias tau siv dav hauv cov chaw siv hluav taws xob thermal: hydrogen txias, hydrogen-dej-hydrogen txias, dej-hydrogen-dej txias. VRCOOLER muab finned-tube hydrogen coolers thiab auxiliary heat exchangers rau thermal power generators, muab 1: 1 sib npaug hloov raws li cov khoom qub los yog cov duab kos duab rau kev tsim kho tshiab thiab kev kho dua tshiab.
Main Cooling Types rau Thermal Turbo-Generator
Tag Nrho Hydrogen Cooling (H-H-H) Hydrogen cools stator winding, rotor winding thiab stator core. Cov hydrogen kub dhau los ntawm hydrogen coolers (gas-to-water finned tube heat exchangers). Features qis cua-hnub poob, siab txias efficiency. Dav siv rau nruab nrab-loj thermal generating units.
Hydrogen-Water-Hydrogen Cooling (H-W-H) Stator winding txais sab hauv de-ionized dej txias; rotor winding thiab stator core yog txias los ntawm hydrogen. Kev sib npaug ntawm kev ua haujlwm txias thiab cov cuab yeej siv peev, feem ntau rau 200-300MW thermal units.
Dej-Hydrogen-Water Cooling (W-H-W) Ob lub stator thiab rotor hollow conductors yog txias los ntawm dej de-ionized; stator core siv hydrogen txias. Siv rau loj-muaj peev xwm 600MW-1000MW ultra-supercritical thermal fais fab nroj tsuag.
Kaw Cua-rau-Dej Cooling Feem ntau yog rau me me thermal generators. Tsis yig rau cov chav loj MW-theem vim qhov ua haujlwm tsis zoo ntawm kev hloov hluav taws xob.
Core System Cheebtsam (Hydrogen-cooled generator as reference)
Hydrogen Cooler (Finned-tube heat exchanger) Cov khoom siv hluav taws xob tseem ceeb. Hydrogen ntws tawm sab nraud finned hlab; dej txias circulates hauv cov hlab. Vertical lossis kab rov tav qauv, mounted hauv lub tshuab hluav taws xob kawg vaj tsev. Kev ntsuas nruj helium yuav tsum tau kuaj.
Gas-tight generator casing Khaws qhov zoo hydrogen siab, tiv thaiv huab cua ingress thiab hydrogen to.
Hydrogen circulating blowers Tsav yuam hydrogen ncig hauv lub tshuab hluav taws xob kab noj hniav.
Ncej foob-roj system Blocks hydrogen to los ntawm rotating ncej clearance, tseem ceeb explosion-proof tivthaiv.
Hydrogen tuav auxiliary system Hydrogen tshuab ziab khaub ncaws, CO₂ purging module, gas sampling & purity monitoring unit, siab tswj li qub, kev nyab xeeb pab kiag li lawm.
De-ionized dej txias subsystem Rau inner-water-cooled winding hom: tshav kub exchanger, dej tank, ion exchanger, lim, conductivity & kub transmitters.
Saib xyuas & tswb ntsuas Hydrogen purity, dew point, siab, winding kub, sib txawv siab sensors rau interlock tiv thaiv.
Cov Ntsiab Cai Tsim & Cov Ntsiab Lus Ua Haujlwm
Hydrogen nruj kev nyab xeeb Hydrogen-air sib tov ua rau muaj kev pheej hmoo tawg. Tube-rau-tube-daim ntawv nthuav dav-weld sib koom ua ke; tag nrho helium leak tshuaj xyuas thaum tsim khoom. Khaws qhov zoo hydrogen siab nyob rau hauv casing txhua lub sijhawm. Siv CO₂ nruab nrab purging ua ntej sau lossis tso tawm cov pa roj hydrogen.
Nruam hydrogen-side-sab siab poob tswj Kev tiv thaiv ntau dhau yuav txo tau cov dej ntws ntawm hydrogen, ua rau over-temperature ntawm rotor thiab stator.
Anti-vibration qauv Turbo-generator khiav ntawm kev kub ceev. Kev txhawb nqa ntxiv rau lub raj ntim kom tsis txhob muaj lub cev qaug zog tawg thiab dej ntws los ntawm kev co mus ntev.
Dew-point & condensation tiv thaiv Tswj hydrogen dew-point ntawm hydrogen tshuab ziab; tsis txhob ya raws condensation puas winding rwb thaiv tsev.
Kev ruaj ntseg rau lub hwj chim-cog overhaul Dej-sab nkag tau rau tshuaj ntxuav; tshem tau bundle qauv nyiam.
Lub ntsiab zoo ntawm Hydrogen Cooling rau Thermal Generators
Hydrogen thermal conductivity yog kwv yees li . 7 zaus siab dua huab cua; qis qis cua-hnub poob ntau txhim khu kev ua haujlwm tag nrho
Hydrogen yog qhuav thiab tsis-corrosive, ncua kev pab cuam lub neej ntawm rwb thaiv tsev
Paub txog cov qauv compact rau loj-muaj peev xwm turbo-generators
Common Risks & Countermeasures
Hydrogen tawg phom sij: nruam purity online xyuas, zoo casing siab, txheem txheej txheem purging.
Cooler tube to: helium leak test ua ntej xa khoom; kev tshuaj xyuas tsis tu ncua thaum kaw kev kho dua tshiab.
Dew-point over-limit: khaws hydrogen tshuab ua haujlwm kom zoo.
