Lub chaw nres tsheb fais fab ntawm cov av khib nyiab- tus dej hnyav muaj teeb meem feem ntau cov kws kho dej tsis tau pom: cov dej txias rau lub tshuab hluav taws xob- cov tshuab hluav taws xob nqa cov xuab zeb thiab cov nyom ntau heev uas nws txhaws cov khoom txias. Stator coil kub nce. Bearings overheat. Chav tsev mus ncig offline - tsis yog vim muaj kev ua haujlwm tsis zoo, tab sis vim tias cov dej uas yuav tsum tau txias nws tau hloov mus ua cov slurry. Ntawm Bapanxia Hydropower Chaw Nres Tsheb, peb 36,000 kW Swedish- cov tsev tsim tau ntsib qhov kev hem thawj tiag tiag txhua lub caij dej nyab. Hauv xyoo 1975, qhov chaw nres tsheb tau teeb tsa lub tshuab raj honeycomb inclined. Tshaj tom ntej13 lub caij dej nyab- xya lub hlis hauv ib xyoos, Plaub Hlis Ntuj txog Lub Kaum Hli - tsis muaj ib chav tsev tau poob rau qhov ua kom txias tsis ua haujlwm.
KEV TXIAV TXIM NTAWM TXOJ CAI NTAWM LUB PUMP tuaj yeem daws tau
Hydropower chaw nres tsheb ntawm tus dej ntws nrog hnyav sediment load ntsib teeb meem raws caij nyoog. Thaum lub caij muaj dej nyab, cov dej hauv lub reservoir nqa cov xuab zeb ntau yam uas yuav tsis xav txog hauv cov chaw kho dej hauv nroog. Yog tias cov dej no raug coj ncaj qha los ntawm pem hauv ntej ntawm lub pas dej ua kom txias, cov xuab zeb thiab cov khib nyiab pov tseg ntim cov kav dej txias kom nruj. Qhov kev thaiv yog cov neeg kho tshuab thiab tag nrho - tu thiab dredging lub coolers yog heev nyuaj, lub sij hawm -siv, thiab feem ntau puas cov khoom. Qee qhov chaw nres tsheb hloov mus rau pem hauv ntej thiab thim rov qab ua haujlwm ntawm lub tshuab ua kom txias kom ntws cov hlab, tab sis qhov no tsuas yog pab tau: nws tsis tuaj yeem tshem tawm tag nrho cov blockage, thiab qhov kev thim rov qab tsis tu ncua ua kom hnav ntawm cov kav dej txias lawv tus kheej.
Lub Swiss- ua cov cua txias ntawm Bapanxia muaj cov dej tsis zoo. Ib qho kev daws teeb meem sedimentation yog xav tau - ib qho uas tuaj yeem ua tau20 kg / m³ influent sediment concentrationThaum dej nyab peaks thiab tseem xa cov dej huv txaus kom txias peb 36 MW units.
YUAV UA LI CAS HONEYCOMB TUBES ua dab tsi qhib lub tank tsis tuaj yeem
Honeycomb inclined tube settler yog tsim los ntawm peb lub hauv paus ntsiab lus los ntawm ntiav -txheej txheej sedimentation txoj kev xav:
Txoj hauv paus ntsiab lus 1 - Thaj tsam qhov sib npaug.Sedimentation yog kev ua haujlwm ntawm thaj chaw dej. Ntxiv honeycomb inclined hlab tsub kom qhov chaw nyob zoo los ntawmkaum ob zaugpiv rau lub tank qhib ntawm tib hneev taw. Ntau cheeb tsam txhais tau tias kev sib cais sai dua.
Txoj cai 2 - Laminar flow stabilization.Cov dej ntws los ntawm cov hlwb honeycomb muaj qhov tshwj xeeb loj wetted perimeter, uas ua rau txo cov hydraulic vojvoog. Qhov no tso tseg tus lej Reynolds, stabilizing qhov ntws mus rau hauv ib qho kev tswj hwm laminar. Sediment thiab dej sib cais kom huv si - tsis muaj turbulence kom particles nyob rau hauv ncua kev kawm ntawv.
Txoj cai 3 - Sludge- txheej txheej.Nyob rau hauv cov hlab inclined, sediment settles nyob rau hauv ib tug sludge- txheej txheej. Qhov no tsis tsuas yog shortens qhov chaw nyob deb thiab lub sij hawm, tab sis kuj tsub kom lub zoo settling nto, boosting tag nrho efficiency. Cov qauv ntsuas ntawm 1: 1 teev tau pom tias ntawm tus qauv tsim muaj kev cuam tshuam sediment concentration ntawm 20 kg / m³ thiab qhov chaw thauj khoom ntawm qhov chaw.3–5 m³/m²·h, tus nqi tshem tawm sediment mus txog92–98%, nrog tsuas yog 3% ntawm cov effluent hais ntau tshaj 0.025 hli - qhov loj me me uas qhov txias txias pib.
SYSTEM: Los ntawm lub pas dej da dej mus rau lub taub dej txias
Kev siv dej tshwj xeeb tau ua rau pem hauv ntej ntawm lub pas dej, nrog rau cov chaw nres nkoj sab saud thiab qis ua haujlwm sib koom ua ke. Txhua qhov chaw nres nkoj muaj cov khib nyiab ruaj khov; ib qho chaw khib nyiab uas txav tau yooj yim ntawm qhov nkag hauv ntej cuam tshuam cov nroj tsuag dej loj dua thiab cov khib nyiab. Dej yog kos los ntawm lub taub hau yeeb nkab nyob rau sab saud ntawm lub twj tso kua mis lub tsev thiab faib ua plaub kab, pub los ntawm plaub.12Sh-19 centrifugal twj tso kua mis(tag nrho plaub qhov sib koom ua ke). Ib lub tshuab lim dej tsis siv neeg ua ntej txhua lub twj tso kua mis muab cov lim zaum kawg rau cov khib nyiab zoo ua ntej cov dej nkag mus rau hauv lub tank sedimentation.
Hauv lub tank -18 m txoj kab uas hla, 18 m qhov siab, 0.3 m freeboard- cov dej tau nce los ntawm qhov chaw faib khoom ntawm qhov hluav taws xob tshaj tawm ntawm 50 mm / s. Qhov siab tshaj plaws ntawm cov dej saum npoo av yog maj mam0.2-0.8 hli / s. Tom qab dhau los ntawm cov hlab ntsha honeycomb, cov dej ntshiab tau nce thiab tau sau los ntawm kev qhib sab ntawm yim radial luv sau troughs (saib daim duab 1), uas pub rau hauv ib qho kev sib sau ua ke ib ncig ntawm lub tank perimeter. Los ntawm qhov ntawd, φ500 hli qhov hluav taws xob yeeb nkab xa cov dej kho rau lub taub hau dej txias rau txhua chav. Cov dej txias uas siv tau tso tawm tag nrho rau hauv lub tailrace.
Settled sediment poob rau hauv ib60℃conical hoppernyob rau hauv lub tank hauv qab thiab yog tawm mus rau lub tailrace los ntawm ib tug sludge yeeb nkab. Lub tank qauv yog qhia hauv daim duab 2.
LUB HONEYCOMB SPECIFICATION - THIAB COV KHOOM ZOO TSHAJ PLAWS
Honeycomb hlwb yog ib txwm hexagons nrog a50 mm inscribed lub voj voog txoj kab uas hla. Txhua lub raj module yog1 m ntev, inclined ntawm 60 degree, muab qhov siab ntsug ntawm 0.866 m. Cov hlab yog sib sau ua ke rau hauv 1 × 0.5 × 0.5 m rectangular honeycomb units.
Tus thawj 1975 installation sivntawv honeycomb- 80 g Jiamusi kraft ntawv dipped nyob rau hauv phenolic resin thiab tshav kub-kho. Daim ntawv honeycomb nqi40,000 yuan. Nws ua haujlwm, tab sis cov khoom muaj qhov txwv tsis pub muaj: tsis muaj zog thiab tawv, thiab nws muaj hnub nyoog. Tom qab plaub xyoos ntawm kev ua haujlwm, hauv1979, daim ntawv honeycomb tau hloov nrogaluminium honeycombntawm tus nqi ntawm120,000 yuan- peb npaug ntawm tus nqi, tab sis nyob deb dua. Tom qab cuaj xyoo ntawm kev ua haujlwm tom qab, cov txhuas tau pom tsuas yog qhov me me ntawm qhov corrosion thiab tseem nyob ruaj khov.
Lub pob zeb pob zeb nws tus kheej xav tau1,400 m³ ntawm pob zeb, 50 tonnes ntawm steel reinforcement, thiab tus nqi160,000 yuan. Tag nrho - tank, ntawv honeycomb, thiab tom qab ntawd aluminium upgrade - tag nrho cov peev yog 320,000 yuan. Rau lub kaw lus uas yuav tiv thaiv peb 36 MW turbine- cov tshuab hluav taws xob rau ntau tshaj kaum xyoo, qhov no yog qhov me me.
| Tsim Parameter | Tsim tus nqi | Kev ua haujlwm tiag tiag |
| Tank txoj kab uas hla × qhov siab | 18 m × 18 m | Ib lub tank (ob txoj kev npaj) |
| Qhov chaw nyob rau ib lub tank | 254.5 m² | 508 m² xav tau (2 tanks) |
| Nto loading | 3–5 m³/m²·h | ~ 5 m³ / m²·h (ib lub tank) |
| Tube cell diam | 50mm (lub voj voog inscribed) | Hexagonal honeycomb |
| Tube ntev / inclination | 1 m / 60 degree | Vertical qhov siab 0.866 m |
| Khoom siv (thawj → upgrade) | Ntawv (phenolic resin) | Aluminium (los ntawm 1979) |
KEV PAB CUAM: 83 SAMPLES dhau 4 xyoos
Nyob nruab nrab ntawm 1977 thiab 1980, cov nroj tsuag thiab cov chaw khaws cia hauv cheeb tsam saib xyuas chaw khaws cia83 ua ke cov qauv dejnyob rau hauv lub tank inlet thiab qhov hluav taws xob, tsom xam cov sediment concentration thiab particle loj tis. Cov txiaj ntsig qhia ib zaj dab neeg sib xws:
1.Coarse sediment (d> 0.025 mm) nyob zoo. Cov effluent tsuas muaj10–15%ntawm cov coarse hais tam sim no nyob rau hauv lub influent - ib tug siab tshem tawm tus nqi rau cov feem uas ua tau clogging.
2.Qhov nruab nrab particle loj nyob rau hauv lub effluent yog tsis tu ncua me dua nyob rau hauv lub influent. Lub tank tau ua raws nraim li nws tau tsim los ua: xaiv tshem tawm qhov loj dua, txhaws- qhov loj me.
3.Qhov feem pua ntawm cov sediment nrog d < 0.025 mm nce nyob rau hauv cov effluent, thaum cov feem pua nrog d > 0.025 mm txo - paub meej tias xaiv tshem tawm ntawm cov teeb meem ntxhib feem.
4.Sediment tshem tawm efficiency txhim kho nrog influent concentration. Ntawm qhov tsim muaj peev xwm ntawm 20 kg / m³, tag nrho tshem tawm tshaj65%.
Table 1: Tshem tawm kev ua haujlwm los ntawm qhov loj me (d> 0.025 mm ciam teb)
| Particle loj dua d> 0.025 mm (raws li % ntawm tag nrho cov ntsuas) | Qhov feem pua ntawm kev ntsuas ua tau raws li qhov xwm txheej no | Sediment tshem tawm efficiency |
| 15% | 100% | 78% |
| 25% | 71% | 65% |
| 50% | 43% | 33% |
Lub rooj tau lees paub tias kev tshem tawm qhov ua tau zoo rau qhov ntxhib feem (d> 0.025 mm) yog qhov muaj zog, thaum cov feem zoo (d < 0.025 mm) dhau los ntawm kev nkag tau yooj yim dua - uas tau txais, vim nws yog cov khoom ntxhib uas ua rau kom txias dua.
Table 2: Sediment thauj tus nqi thiab tshem tawm efficiency (1980 ntsuas cov ntaub ntawv)
| Lub sijhawm ntsuas | Inlet thauj tus nqi (kg / h) | Inlet avg. conc. (kg / m³) | Qhov hluav taws xob thauj tus nqi (kg / h) | Qhov hluav taws xob avg. conc. (kg / m³) | Kev tshem tawm tus nqi |
| Jul 4 00:00 – Jul 6 08:00 | 7,500 | 3.72 | 2,497 | 1.96 | 67% |
| Jul 13 00:00 – Jul 13 12:00 | 7,338 | 3.64 | 3,069 | 2.41 | 58% |
| Aug 2 17:00 – Aug 3 00:00 | 20,906 | 9.52 | 6,318 | 6.70 | 70% |
Tag nrho peb lub sij hawm ntsuas pom qhov kev tshem tawm ntau dua 50%, nrog tus nqi siab tshaj -70%- coinciding nrog lub siab tshaj plaws influent concentration (9.52 kg/m³ nruab nrab). Qhov no lees paub qhov sib txawv:qhov qias neeg cov dej tuaj, qhov zoo dua tus neeg nyob tshem cov sediment- raws nraim tus cwj pwm xav tau thaum dej nyab- lub caij ntuj sov.
VIM LI CAS THIAJ LI YUAV TSUM TAU QHOV TSEEB NTAWM COV qauv - Thiab yog vim li cas nws tsis muaj teeb meem
Cov qauv ntsuas tau kwv yees 92-98% tshem tawm ntawm kev tsim khoom. Cov ntaub ntawv hauv teb tau pom 58-70%. Peb yam piav qhia qhov sib txawv:
1. Ib zaug - tank ua haujlwm tawm tsam ob - tank tsim.Qhov chaw nres tsheb xav tau 1,280 m³ / h ntawm cov dej txias. Tus tsim xam - raws li qhov xav tau sedimentation cheeb tsam ntawm 427 m² - hu rauob lub tank(txhua 254.5 m²). Vim qhov chaw txwv, tsuas yog ib qho tau tsim. Ib lub tank khiav tsis tu ncua saum nws qhov chaw tsim khoom. Lub sij hawm khaws cia hauv cov hlab ntsha ntawm lub honeycomb yog luv dua li cov qauv xav tau, thiab kev ua haujlwm sedimentation raug kev txom nyem raws li.
2. Tsawg dua - dua - tsim kom muaj kev sib haum xeeb.Tshaj li 13 xyoos ntawm kev ua haujlwm, ib hnub nruab nrab cov sediment concentration ntawm 20 kg / m³ nkaus xwbob mus rau peb hnub hauv ib xyoos- thiab hauv qee lub xyoo, tsis yog kiag li. Lub tank siv feem ntau ntawm nws lub neej ua haujlwm zoo hauv qab qhov tsim muaj peev xwm thauj khoom. Sludge kuj tsis tso tawm ntawm qhov tsim ntim, uas cuam tshuam ntxiv rau kev ua haujlwm.
3. Kev txwv tsis pub coj mus kuaj.Cov txheej txheem kev sim - suav nrog tus lej ntawm cov qauv, qhov chaw kuaj, thiab tus neeg sawv cev ntawm cov ntaub ntawv - tau lees paub tias tsis txaus rau kev ntsuas kev ua tau zoo. Qhov ntsuas 58-70% yog qhov kev kwv yees kwv yees.
Thiab tseem, txawm tias khiav ib lub tank uas ob tau teev tseg, lub kaw lus tau xa dab tsi tseem ceeb:xoom yuam kev kaw vim qhov cua txias tsis ua haujlwm hauv 13 lub caij dej nyab. When combined with alternating forward-reverse cooling system operation, no severe wear or clogging was found in cooler end covers or pipes during inspections. The honeycomb settler did not need to achieve 98% removal to succeed - it only needed to remove enough of the >0.025 hli feem kom cov cua txias kom meej. Nws ua.
Qhov no txhais tau li cas rau lwm qhov chaw dej dej
1.Inclined tube settlers ua haujlwm rau cov dej txias ua haujlwm - tsis yog rau kev kho dej haus xwb. Lub hom phiaj kev ua tau zoo sib txawv (tshem tawm cov lus ntxhib, tsis ua tiav sub-NTU clarity), tab sis cov ntsiab lus hydraulic zoo ib yam.
2.Kev xaiv khoom nyob ntawm daim ntawv thov. Daim ntawv honeycomb ua haujlwm tau plaub xyoos ntawm 40,000 yuan. Aluminium siv sijhawm cuaj xyoo (thiab suav) ntawm 120,000 yuan. Rau kev teeb tsa niaj hnub no, PVC thiab PP muab tus nqi- ua haujlwm nruab nrab hauv nruab nrab uas tsis muaj ntawv lossis txhuas tuaj yeem ua tau raws li xyoo 1975.
3.Ib lub tank tsis muaj peev xwm tseem tuaj yeem xa cov kev ntseeg tau ua haujlwm yog tias lub hom phiaj tsim tau raug txhais kom raug. Lub tank Bapanxia yog ib nrab ntawm thaj chaw uas yuav tsum tau ua - tab sis vim tias lub hom phiaj yog kev tiv thaiv kom txias, tsis meej meej, nws ua tiav.
4.Rau cov chaw nres tsheb hydropower ntawm sediment- cov dej ntws ntws, honeycomb inclined tube settlers muab cov cuab yeej siv tsawg, tsis tshua muaj nqi, sedimentation ceev, thiab me me hneev taw - qhov zoo uas muaj txiaj ntsig tshwj xeeb tshaj yog thaum chaw nres tsheb qhov chaw muaj kev txwv.
Xav Tau Tube Settler Media rau Kev Lag Luam lossis Kev Siv Hauv Nroog?
Juntai muab PVC thiab PP honeycomb inclined tube settler media nyob rau hauv ib tug ntau yam ntawm cell loj thiab daim ntawv thicknesses - rau cov dej kho nroj tsuag, industrial txias dej systems, thiab hydropower daim ntaub ntawv. Peb muab hydraulic sizing xam, kev qhia xaiv cov khoom, thiab kev txhawb nqa installation. Txawm hais tias koj tab tom tsim ib qho chaw nyob tshiab lossis hloov cov hnub qub tshaj tawm, peb tuaj yeem pab koj txheeb xyuas cov khoom tsim nyog rau koj lub hom phiaj dej zoo.
| Tube Settler Khoom Specs | Thov Kev Pabcuam Engineering | Tag Nrho Cov Khoom Muag |