Kev khawb thiab sib tsoo ntawm cov ceg coj thiab cov ceg thawb ntawm cov hydraulic turbine me me yog ib qho txheej txheem tseem ceeb hauv kev teeb tsa thiab kho cov chaw nres tsheb hydropower me me.
Feem ntau ntawm cov bearings ntawm cov turbines hydraulic me me tsis muaj cov qauv kheej kheej thiab cov thrust pads tsis muaj cov bolts tiv thaiv qhov hnyav. Raws li pom hauv daim duab: A yog cov qauv aspheric; B tsis muaj cov bolt tiv thaiv qhov hnyav, thiab lub thrust pad yog nias ncaj qha rau ntawm lub thav duab pad. Cov hauv qab no yog feem ntau los tham txog cov txheej txheem, cov kauj ruam thiab cov kev xav tau ntawm kev khawb thiab kev teeb tsa rau daim ntawv qauv no.
1. Cov cuab yeej npaj yog cov pob zeb roj peb sab thiab ob sab. Qhov ntev ntawm cov pob zeb peb sab tuaj yeem hloov kho raws li koj tus cwj pwm. Feem ntau, nws yog qhov tsim nyog siv 6-8 teev. Cov pob zeb peb sab qub kuj tuaj yeem hloov kho dua tshiab. Yog tias ua tau, koj tuaj yeem siv cov hlau caij nplooj ntoos hlav los ntaus ib lossis ob rab riam tiaj tus, uas yooj yim dua rau khawb lub phaj thawb. Kev sib tsoo ntawm cov pob zeb peb sab yog ua tiav ntawm lub log sib tsoo. Thaum lub sijhawm sib tsoo, nws yuav tsum txias tag nrho nrog dej kom tiv thaiv cov pob zeb peb sab los ntawm cua sov thiab annealing softening. Kev sib tsoo zoo yog ua tiav ntawm cov pob zeb roj kom tshem tawm cov dents zoo heev thiab burrs tshuav thaum lub sijhawm sib tsoo ntxhib. Thaum lub sijhawm sib tsoo zoo, roj cav (lossis roj turbine) yuav tsum tau ntxiv rau kev txias. Npaj lub rooj clamp nrog qhov siab tsim nyog. Tus neeg sawv cev tso saib tuaj yeem sib xyaw nrog cov kua cwj mem haus luam yeeb thiab roj turbine lossis luam tawm liab.
2. Ntxuav, tshem xeb thiab tshem cov kab nrib pleb. Cov kabmob yuav tsum tau tshem xeb thiab tshem cov kab nrib pleb ua ntej khawb. Tshwj xeeb, qhov chaw sib xyaw ua ke ntawm cov ceg ntawm cov kabmob qhia, qhov chaw sib koom ua ke ntawm cov kabmob thiab qhov chaw ntawm cov kabmob ntawm lub thrust pad yuav tsum tau ntxuav kom zoo.
3. Khawb cov ceg ntawm lub bearing. Ua ntej, lub qhov tseem ceeb ntawm lub turbine yuav tsum tau leveled thiab kho, (levelness ≤ 0.08m / M) kom tiv thaiv cov khau kom tsis txhob raug khawb rau hauv cov duab taper. Maj mam thiab sib npaug zos tag nrho cov npoo ntawm lub bearing nrog rab riam triangular kom tshem tawm cov xuab zeb thiab cov khoom tsis huv uas txuas rau ntawm qhov chaw ntawm lub bearing. Cov khoom tsis huv uas nyob tob hauv cov hlau bearing yuav tsum tau khaws tawm kom tsis txhob cuam tshuam rau qhov zoo ntawm cov ntaub scraping.
Tom qab ntxuav lub journal, tuav lub bush bearing rau ntawm lub journal, kho lub locating pin, xauv lub hau, thiab ntsuas qhov sib xyaw ua ke ntawm lub bush bearing thiab qhov sib txawv ntawm Bush thiab lub journal nrog lub feeler gauge los txiav txim siab qhov tuab ntawm daim ntawv tooj liab ntxiv rau ntawm qhov sib xyaw ua ke (padding yog rau kev saib xyuas yav tom ntej). - Feem ntau, lub tooj liab pad yog ob txheej, thiab kwv yees li 0.10 ~ 0.20 hli tuaj yeem ntxiv. Lub hauv paus ntsiab lus rau kev txiav txim siab tag nrho qhov tuab ntawm lub pad yog kom tawm qhov nyiaj pub dawb ntawm 0.08 ~ 0.20 rau lub bush bearing; Ntawm ib sab tes, qhov zoo ntawm kev khawb yuav tsum tau lees paub, ntawm qhov tod tes, qhov haujlwm ntawm cov vuas khawb yuav tsum raug txo kom ntau li ntau tau.
Muab daim ntawv tooj liab txiav rau ntawm qhov sib koom ua ke ntawm lub bush bearing, tuav ob lub bush bearing rau ntawm phau ntawv xov xwm, nruj cov ntsia hlau kho, tig lub bush bearing thiab zom nws. Yog tias nws tsis tuaj yeem tig, tshem lub bush bearing, khi nws ua ib nrab ntawm phau ntawv xov xwm, nias nws nrog tes, zom nws rov qab thiab tawm mus raws li kev taw qhia tangent, thiab tom qab ntawd khawm thiab zom nws thaum muaj qhov sib txawv ntawm lub bush bearing thiab phau ntawv xov xwm. Tom qab sib tsoo, qhov sib cuag ntawm qhov chaw pobzeb yuav pom dub thiab ci, thiab qhov siab dua yuav dub tab sis tsis ci. Txiav qhov dub thiab ci nrog lub duab peb ceg rov qab. Thaum cov xim dub ci tsis pom tseeb, thov ib txheej ntawm cov neeg sawv cev tso saib rau ntawm phau ntawv xov xwm ua ntej sib tsoo. Sib tsoo thiab khawb ntau zaus kom txog thaum qhov sib cuag thiab qhov sib nrug ntawm qhov chaw bearing thiab phau ntawv xov xwm ua tau raws li qhov yuav tsum tau ua. Feem ntau hais lus, tag nrho cov pobzeb nto yuav tsum tau kov lub sijhawm no, tab sis tsis muaj ntau qhov sib cuag; Qhov sib nrug tau pib mus txog qhov yuav tsum tau ua, thiab muaj qhov tso cai khawb ntawm 0.03-0.05 hli. Khawb cov plhaub bearing ntawm ob sab ntawm lub flywheel.
4. Khawb cov ntaub thaiv thawb. Vim tias cov ntaub thaiv thawb feem ntau raug khawb thaum lub sijhawm thauj mus los thiab khaws cia, yuav muaj cov burrs ntawm qhov chaw ntawm cov ntaub thaiv, yog li ua ntej muab cov ntawv xuab zeb metallographic lo rau ntawm daim iav, thiab thawb cov ntaub thaiv thawb rov qab thiab tawm ntawm daim ntawv xuab zeb rau ntau zaus. Thaum lub sijhawm sib tsoo, khaws cov pobzeb nto sib luag rau daim iav, thiab lub sijhawm sib tsoo thiab qhov hnyav ntawm txhua pobzeb yog tib yam, txwv tsis pub qhov tuab ntawm kev thawb sib txawv heev, ua rau muaj kev ua haujlwm ntawm kev khawb.
So daim iav phaj thiab qhov chaw ntawm lub ncoo, nias lub ncoo thawb rau ntawm daim iav phaj, zom nws rov qab thiab tawm ntau dua kaum zaug raws li kev tig ntawm lub ncoo thiab daim iav phaj, thiab tshem lub ncoo thawb rau kev khawb. Tom qab tag nrho cov chaw ntawm cov kabmob sib cuag zoo nrog daim iav phaj, cov kabmob tuaj yeem sib sau ua ke.
5. Sib dhos cov kabmob thiab khawb me me. Ua ntej, muab lub rooj zaum kabmob uas tau ntxuav lawm tso rau hauv qhov chaw (ntawm lub hauv paus ncej, cov ntsia hlau kho ntawm lub rooj zaum kabmob tuaj yeem txuas ua ke tab sis tsis txhob nruj), muab lub bush qis dua tso rau hauv lub rooj zaum kabmob, maj mam tsa lub ncej loj rau hauv lub bush, kho lub rooj zaum kabmob los ntawm kev ntsuas qhov sib txawv ntawm lub bush, kom txoj kab nruab nrab ntawm lub bush ntawm ob sab ntawm lub flywheel nyob hauv ib txoj kab ncaj (saib sab saud: qhov yuam kev dav dav ≤ 2 xov hlau), thiab qhov chaw pem hauv ntej thiab tom qab yog qhov tsim nyog (yuav tsum ntxiv lub ncoo thaum qhov sib txawv ntawm qhov siab ntawm lub rooj zaum kabmob loj), thiab tom qab ntawd xauv lub ntsia hlau kho ntawm lub rooj zaum kabmob.
Tig lub flywheel tes rau ntau qhov tig, tshem lub bush bearing thiab xyuas seb qhov sib txuas ntawm cov bush bearing puas sib faib. Thaum tag nrho cov bearing nto sib txuas zoo thiab qhov sib nrug ntawm bush bearing ua tau raws li qhov yuav tsum tau ua (qhov sib nrug yuav tsum ua raws li qhov yuav tsum tau ua ntawm daim duab kos). Yog tias tsis qhia, siv 0.l ~ 0.2% ntawm txoj kab uas hla ntawm phau ntawv xov xwm los khawb. Siv cov ntaub ntawv peb ceg khawb cov ntsiab lus loj thiab ntxiv cov ntsiab lus ntom ntom; tus qauv riam feem ntau yog strip, uas yog siv los pab txhawb kev khaws cia thiab kev ncig ntawm cov roj turbine. Qhov yuav tsum tau ua yog tias cov ntsiab lus sib txuas tau faib tag nrho hauv lub kaum sab xis ntawm 60 ° ~ 70 ° hauv nruab nrab ntawm lub bush bearing qis dua, thiab 2-3 cov ntsiab lus ib square centimeter yog qhov tsim nyog, tsis ntau dhau lossis tsawg dhau.
Siv daim ntaub dawb los ntxuav lub thrust pad. Tom qab nws nyob rau hauv qhov chaw, ntxiv me ntsis roj lubricating rau hauv lub guide bearing pad, tig lub flywheel, thiab ntxiv axial thrust los sib tsoo lub thrust pad thiab daim iav raws li nws qhov chaw tiag tiag. Kos txhua lub pad (qhov chaw ntawm lub thrust pad nrog qhov ntsuas kub thiab ze rau qhov chaw sib xyaw ua ke tau kho), xyuas qhov chaw ntawm lub pad, khawb lub contact pad dua, thiab sib tsoo tus pin ntawm sab nraub qaum ntawm lub pad nrog daim ntaub abrasive (qhov sib tsoo qis dua, uas yuav tsum ntsuas nrog lub micrometer sab hauv lossis vernier caliper, uas piv rau lub pad nyias dua). Ntawm ib sab, lub hom phiaj yog ua kom qhov chaw ntawm lub pad kov zoo dua nrog daim iav, ntawm qhov tod tes, ua kom lub thrust pad "tuab" nyias dua. Nws yog qhov yuav tsum tau ua kom tag nrho 8 lub thrust pads muaj kev sib cuag zoo hauv qhov chaw tiag tiag. Feem ntau hais lus, lub thrust pad ntawm kab rov tav me me yog me me thiab lub nra yog me me, yog li qhov chaw ntawm lub pad tsis tuaj yeem khawb.
6. Khawb kom zoo. Tom qab tag nrho cov kabmob tau teeb tsa rau hauv qhov chaw thiab cov pob zeb tawv, ntxiv axial thrust kom tig, thiab kho thiab khawb raws li qhov sib cuag tiag tiag ntawm cov ntaub thaiv kabmob thiab cov ntaub thaiv kabmob kom ua tau raws li qhov yuav tsum tau ua ntawm cov duab kos thiab cov lus qhia.
Yuav tsum qhib ib lub qhov roj ntev rau ob sab ntawm qhov sib koom ua ke ntawm lub bush bearing lossis ib sab (sab muab roj), tab sis tsawg kawg 8 hli lub taub hau yuav tsum tau khaws cia rau ob qho kawg kom tsis txhob poob roj lubricating los ntawm ob qho kawg. Lub qhov roj ntawm lub thawb feem ntau suav nrog 0.5 hli qis dua thiab qhov dav yog li 6 ~ 8 hli. Lub bush bearing thiab lub thawb pad tsuas yog tsim nyog tom qab khawb zoo.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-13-2021
