330MW Hydrogen Cooled Generator: Cov Ntsiab Lus Txias Txias Rau Kev Siv Hluav Taws Xob
Lub hauv paus ntsiab lus thiab qhov system muaj pes tsawg leeg
Lub tshuab cua txias ntawm 330MW hydrogen cooled generator yog nyob rau hauv ib ncig ntawm kaw- voj voj voog, ua tiav kev tswj qhov kub thiab txias los ntawm kev sib pauv cua sov ntawm hydrogen gas. Lub kaw lus tag nrho muaj plaub yam tseem ceeb, uas ua haujlwm ua ke kom ruaj khov ntawm cov khoom siv.
1. Lub hauv paus ntsiab lus ua haujlwm
Thaum lub tshuab hluav taws xob ua haujlwm, cov kiv cua kiv cua ntawm ob qho kawg ntawm lub rotor tsav cov roj hydrogen kom ncig nyob rau hauv ib qho kev kaw hauv lub casing, ntws los ntawm stator core cua duct thiab rotor winding qhov cua nyob rau hauv ib ntus, absorbing lub tshav kub generated los ntawm winding thiab core; Tom qab nqus cua sov, cov pa roj kub hydrogen nkag mus rau hauv lub tshuab hluav taws xob hydrogen, sib pauv cov cua sov nrog cov dej ntws hauv lub raj, txias, thiab rov qab mus rau sab hauv lub tshuab hluav taws xob kom tshem tawm cov cua kub tsis tu ncua. Qhov kub ntawm stator winding yog tswj nyob rau hauv ib qho kev nyab xeeb ntawm tsawg dua los yog sib npaug rau 90℃thiab qhov kub ntawm cov tub ntxhais hlau yog tsawg dua los yog sib npaug rau 80℃[7]. Lub kaw lus tswj hwm hydrogen purity (Ntau dua lossis sib npaug li 98%) thiab siab (0.3-0.5MPa) los ntawm cov khoom siv hydrogen ntxiv, ntxiv kev txhim kho thermal conductivity efficiency.
Lub ntsiab zoo ntawm hydrogen txias tshuab
Piv nrog rau cov cua txias thiab cov kev daws teeb meem dej txias, 330MW hydrogen cooled generator muaj qhov zoo ntawm kev ua tau zoo, kev siv hluav taws xob, thiab kev nyab xeeb, tshwj xeeb tshaj yog tsim nyog rau cov kev xav tau ntawm kev ua haujlwm loj thiab nruab nrab - loj generator units.
1. Ua kom sov dissipation efficiency ntawm 3-5 zaug
Lub thermal conductivity ntawm hydrogen yog li 7 npaug ntawm huab cua, thiab nws muaj zog fluidity. Nws tuaj yeem nkag mus rau hauv qhov chaw nqaim xws li qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Nyob rau hauv tib lub load, lub winding kub yog txo los ntawm 30-50℃piv rau cua-txias units, zoo heev expanding lub rwb thaiv tsev lub neej.
2. Txo kev siv hluav taws xob thiab txhim kho chav ua haujlwm
Qhov ceev ntawm hydrogen tsuas yog 1/14 ntawm huab cua, thiab cua tsis kam yog qhov me me thaum lub sij hawm siab - nrawm. Lub qhov cua thiab cov neeg kho tshuab poob raug txo los ntawm 60% -80% piv rau cov cua txias chav tsev, uas tuaj yeem ua rau kom muaj txiaj ntsig tag nrho ntawm lub tshuab hluav taws xob los ntawm 0.7% -1.0% thiab txuag tau ntau cov nqi hluav taws xob txhua xyoo.
3. Muaj kev nyab xeeb thiab txhim khu kev qha, haum rau kev ua haujlwm siab
Hydrogen muaj cov tshuaj ruaj khov thiab tsis txhawb kev sib txuas (nws tuaj yeem tawg thaum sib xyaw nrog huab cua mus rau 4% -75%). Nws tsis tsim ozone nyob rau hauv corona tawm thiab tuaj yeem tiv thaiv rwb thaiv tsev; Nyob rau tib lub sijhawm, lub kaw lus tau txais cov qauv tsim airtight tag nrho thiab cov roj kaw kom zoo tiv thaiv kev xau thiab ua tau raws li qhov yuav tsum tau ua rau lub sijhawm ua haujlwm puv sijhawm ntawm 330MW chav tsev.
Cov ntsiab lus tseem ceeb
1. Qhov cua thiab cua txias tsim
Txais ib qho plaub hauv tsib tawm ntau qhov cua qhov cua, lub cev rotor tau muab faib ua plaub qhov chaw nkag thiab tsib qhov hluav taws xob raws li axial kev taw qhia. Lub rotor winding txais kev sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm oblique ntws hauv cov cua txias, thiab qhov kawg winding txais cov longitudinal thiab transverse hydrogen sab hauv txias kom ntseeg tau tias cov cua sov tsis sib xws thiab tsis txhob muaj cua sov hauv zos [9].
2. Sealing thiab tswj kev nyab xeeb
Lub sealing roj system txais ib lub nplhaib sib khi pobzeb, uas muab qhov sib txawv ntawm lub rotating ncej los ntawm cov roj zaj duab xis los tiv thaiv cov roj hydrogen los ntawm cov pa tawm thiab cua nkag mus;
Txhim kho lub tshuab ziab khaub ncaws hydrogen kom nqus dej noo los ntawm molecular sieves thiab tswj cov dej lwg taw tes hauv qab -20℃los tiv thaiv kev tiv thaiv los ntawm kev ntub dej;
Los ntawm kev sib txuas cov kab mob hydrogen analyzer nrog xab npum dej kom pom, kev tshuaj xyuas tsis tu ncua yog ua rau ntawm flanges, li qub, lub kaus mom kawg, thiab lwm cov ntsiab lus tsis zoo los xyuas kom meej tias cov dej xau tau raws li lub teb chaws tus qauv [15].
3. Purity thiab siab xyuas
Lub purity ntawm hydrogen yuav tsum tau khaws cia ntawm 95% los yog saum toj no (nyiam dua 98%), thiab lub kaw lus yuav cia li tswb thaum lub purity poob mus rau 95%; Lub kaw lus siab feem ntau yog tswj ntawm 0.3-0.5MPa, thiab ib puag ncig muaj zog tuaj yeem txhim kho cov thermal conductivity ntawm hydrogen gas, haum rau 330MW siab load.
Daim ntawv thov scenarios thiab tus nqi
330MW hydrogen cooled generators yog dav siv nyob rau hauv loj -scale thermal fais fab nroj tsuag, faib lub zog tej yaam num, lub regional fais fab mov chaw zov me nyuam, thiab lwm yam xwm txheej, tshwj xeeb tshaj yog haum rau lub hauv paus load units uas yuav tsum tau ntev - lub sij hawm ua hauj lwm tag nrho load.
1. Cov khoom siv tseem ceeb ntawm cov khoom siv hluav taws xob thermal
Raws li cov cuab yeej tseem ceeb ntawm 330MW thermal fais fab units, hydrogen cooled generators tuaj yeem hloov mus rau cov cua kub dissipation xav tau ntawm supercritical thiab ultra supercritical units, txhim kho lub zog tsim hluav taws xob ntawm cov chav nyob, txo cov nqi siv hluav taws xob ntawm cov nroj tsuag, thiab txo cov nqi tu, pab thermal power units ua tiav kev txuag hluav taws xob thiab kev txo qis [11].
2. Faib hluav taws xob thiab hluav taws xob thaum muaj xwm ceev
Hauv kev faib hluav taws xob ua haujlwm, 330MW hydrogen cooled generator tuaj yeem hloov kho mus rau ntau qhov chaw kub xws li roj turbines thiab biomass fais fab, thiab sai sai teb rau kev hloov pauv; Raws li cov khoom siv hluav taws xob thaum muaj xwm txheej ceev, nws cov khoom siv hluav taws xob tau zoo thiab muaj peev xwm ua haujlwm ruaj khov tuaj yeem ua kom cov khoom siv hluav taws xob tsis tu ncua hauv cheeb tsam thaum muaj hluav taws xob tsis ua haujlwm.
3. Kev lag luam tus nqi thiab cov txiaj ntsig kev lag luam
Kev txhim kho kev ua tau zoo: Piv rau huab cua- cov chav txias txias, lub zog tsim hluav taws xob tau nce los ntawm 0.7% -1.0%, nrog rau ib xyoos nce ntawm kwv yees li 2.3-3.3 lab kWh (xam raws li 7000 teev ntawm kev ua haujlwm hauv ib xyoos);
Kev siv hluav taws xob txo qis: qhov cua poob qis yog txo los ntawm 60% -80%, txuag ntau tshaj 1 lab kWh ntawm lub Hoobkas hluav taws xob txhua xyoo thiab txo qis kev ua haujlwm thiab cov nqi kho;
Muaj kev nyab xeeb thiab txhim khu kev qha: Txo cov sijhawm poob qis uas tshwm sim los ntawm overheating, txhim kho cov khoom siv, thiab xyuas kom ruaj khov rau lub zog hluav taws xob.
Kev Ua Haujlwm, Kev Saib Xyuas, thiab Kev Nyab Xeeb Cov Qauv
1. Cov ntsiab lus tseem ceeb ntawm kev saib xyuas txhua hnub
Kev saib xyuas txhua hnub ntawm hydrogen purity, siab, thiab to. Yog tias qhov purity qis dua 98%, hydrogen yuav tsum tau muab ntxiv rau lub sijhawm, thiab yog tias nws qis dua 95%, lub tshuab yuav tsum raug kaw rau kev daws teeb meem;
Tsis tu ncua ntxuav lub scaling nyob rau hauv lub hydrogen txias tub raj kom ntseeg tau tias tshav kub hloov efficiency, thiab kho cov dej txias txaus tus nqi raws sij hawm thaum lub txias dej kub yog txawv txav;
Xyuas cov roj zoo thiab siab ntawm cov roj sealing system. Lub sealing roj siab yuav tsum ib txwm yog 0.05-0.1MPa siab dua hydrogen siab kom tiv thaiv cov roj zaj duab xis rupture;
Ua hydrogen leak detection ib zaug txhua lub hlis twg, siv cov kab ke hydrogen analyzer los npog tag nrho cov kab ke. Thaum kaw, cov dej xab npum tuaj yeem siv los kuaj xyuas qhov xau.
2. Cov qauv kev nyab xeeb ua haujlwm
Kev hloov hydrogen yuav tsum tau siv CO ₂ ua qhov nruab nrab nruab nrab, nruj me ntsis raws li cov txheej txheem ntawm "tso tawm hydrogen ua ntej, ces them hydrogen" los tiv thaiv hydrogen oxygen sib tov tawg;
Nruab ib hydrogen concentration saib nyob rau hauv lub computer chav tsev, nrog lub tswb pib ntawm tsawg tshaj li los yog sib npaug li 1% (ntim feem), thiab cov kev sib txuas cov pa system yuav cia li pib;
Cov neeg ua haujlwm yuav tsum tuav daim ntawv pov thawj los ua haujlwm, paub txog cov txheej txheem thaum muaj xwm txheej ceev ntawm hydrogen cooling systems, thiab yuav tsum tau nruab nrog cov cuab yeej kev nyab xeeb xws li tua hluav taws thiab tshuaj tiv thaiv.
Cov qauv kev lag luam thiab cov txheej txheem thev naus laus zis
1. Cov qauv kev lag luam tseem ceeb
Kev tsim, kev saib xyuas, thiab kev ua haujlwm ntawm 330MW hydrogen cooled generator yuav tsum ua raws li cov qauv hauv qab no hauv lub tebchaws thiab kev lag luam specifications ntawm National Standard Information Public Service Platform [14]:
DL/T 1766.4-2021 "Cov Lus Qhia rau Kev Kho Dej Hydrogen Hydrogen Cooled Steam Turbine Generator Part 4: Txhim Kho Hydrogen Cooling System"
NB/T 25068-2017 Cov Txheej Txheem Txheej Txheem rau Hydrogen Roj Dej System ntawm Nuclear Fais Fab Cog Generator
Lub National Energy Administration's "Neeg tsib Kev Tiv Thaiv Kev Nyab Xeeb Kev Nyab Xeeb" (hais meej cov qauv rau kev tuav cov hydrogen leakage: Tsawg dua lossis sib npaug ntawm 0.3m ³ / d yog qhov qub, Ntau dua lossis sib npaug li 0.3m ³ / d yog npaj rau kev tshem tawm tsis xws luag, thiab ntau dua lossis sib npaug li 5m ³ / d yog tam sim ntawd kaw).
2. Kev tsim kho technology
Tag nrho hydrogen txias tshuab kev hloov kho tshiab: siv cov roj hydrogen nrog lub purity ntawm ntau dua lossis sib npaug li 99.9% raws li qhov nruab nrab cua txias rau stator, rotor, thiab cov tub ntxhais hlau, hloov cov dej ib txwm siv hydrogen txias, kev txhim kho ntxiv, thiab tswj hydrogen to hauv qab 0.5m ³ / d (tsuas yog 40% ntawm lub teb chaws tus qauv);
Kev soj ntsuam ntse thiab sealing innovation: Kev sib koom ua ke AI thiab siab -cov cuab yeej kho qhov muag pom tseeb kom ua tiav- lub sijhawm ntse saib xyuas ntawm hydrogen to, purity, thiab siab, thaum txhim kho cov khoom sib khi kom txo tau qhov txaus ntshai [11];
Tsis tshua muaj kev tsim kho kom zoo: Los ntawm kev siv cov thev naus laus zis xws li kev txhawb nqa elastic ntawm lub rotor kawg thiab sib nqus shielding ntawm stator kawg, cov neeg kho tshuab kev co thiab poob raug txo, thiab cov cuab yeej siv tau ntev.
Cov ntsiab lus
Lub 330MW hydrogen cooled generator, nrog nws cov txiaj ntsig zoo ntawm kev ua kom muaj cua sov kom zoo, kev siv hluav taws xob tsawg, thiab kev nyab xeeb siab, tau dhau los ua qhov zoo tshaj plaws txias txias rau 330000 kilowatt theem tsim hluav taws xob. Nws txoj kev tsim qauv, kev tswj hwm kev nyab xeeb, thiab kev siv dav dav tuaj yeem ua tsis tau tsuas yog ua tau raws li lub sijhawm ntev - cov kev xav tau ntawm cov thermal fais fab loj loj thiab cov phiaj xwm faib hluav taws xob, tab sis kuj pab lub zog hluav taws xob ua kom muaj kev txuag hluav taws xob, txo kev noj, kev nyab xeeb, thiab ruaj khov. Nrog rau kev tsim kho tshiab ntawm cov thev naus laus zis xws li tag nrho hydrogen txias thiab kev saib xyuas ntse, 330MW hydrogen cooled generator yuav ua kom pom dav dua daim ntawv thov kev cia siab hauv thaj chaw ntawm cov cuab yeej hluav taws xob, muab kev txhawb nqa tseem ceeb rau kev hloov pauv hluav taws xob thoob ntiaj teb.
