1 、 Cov zis ntawm lub tshuab hluav taws xob log txo qis
(1) Yog vim li cas
Nyob rau hauv cov xwm txheej ntawm lub taub hau dej tas li, thaum cov lus qhia vane qhib tau mus txog qhov tsis muaj qhov qhib qhib, tab sis lub turbine tsis tau mus txog qhov ntsuas ceev, lossis thaum cov lus qhia vane qhib tau nce ntau dua li qhov qub ntawm tib qhov tso zis, nws suav hais tias cov khoom tso tawm tau txo qis. Lub ntsiab yog vim li cas rau cov zis txo yog raws li nram no: 1. Flow poob ntawm hydraulic turbine; 2. Hydraulic poob ntawm hydraulic turbine; 3. Mechanical poob ntawm hydraulic turbine.
(2) Kev ua haujlwm
1. Nyob rau hauv cov xwm txheej ntawm chav ua haujlwm lossis kaw, qhov tob tob ntawm cov raj xa dej yuav tsum tsis pub tsawg dua 300mm (tshwj tsis yog lub tshuab hluav taws xob impulse). 2. Ua tib zoo saib xyuas cov dej ntws los yog tawm kom cov dej ntws sib npaug thiab du. 3. Cia tus khiav khiav hauv ib txwm muaj, thiab nres lub tshuab rau kev tshuaj xyuas thiab kho thaum muaj suab nrov. 4. Rau axial-flow fixed hniav turbine, yog hais tias lub tsev tso zis poob dheev thiab lub vibration intensifies, nws yuav tsum raug kaw tam sim ntawd rau kev soj ntsuam.
2, Unit bearing ncoo kub nce sharply
(1) Yog vim li cas
Muaj ob hom bearings rau hydraulic turbines: coj bearing thiab thrust bearing. Cov xwm txheej kom ntseeg tau tias kev ua haujlwm ib txwm muaj ntawm cov kabmob yog qhov tseeb installation, lubrication zoo thiab cov khoom siv dej txias. Feem ntau muaj peb txoj kev lubrication: dej lubrication, nyias roj lubrication thiab qhuav lubrication. Cov laj thawj rau qhov nce siab ntawm cov ncej kub yog raws li hauv qab no: ua ntej, cov kabmob kev teeb tsa zoo tsis zoo lossis cov kabmob hnav; Thib ob, lubricating roj system tsis ua hauj lwm; Thib peb, daim ntawv lo roj lubricating tsis sib xws lossis cov roj tsis zoo; 4. Cov dej txias tsis ua haujlwm; 5. Lub tsev vibrates vim qee yam; Thib rau, cov roj theem ntawm cov kabmob qis dhau vim yog cov roj to.
(2) Kev ua haujlwm
1. Rau cov dej lubricated bearings, cov dej lubricating yuav tsum nruj nruj kom cov dej zoo. Cov dej yuav tsum tsis txhob muaj cov khib nyiab thiab cov roj ntau ntau kom txo tau qhov hnav ntawm cov kabmob thiab kev laus ntawm cov roj hmab.
2. Nyias roj lubricated bearings feem ntau txais nws tus kheej ncig. Roj slingers thiab thrust discs yog siv. Cov roj yog muab los ntawm kev sib hloov ntawm chav tsev. Ua tib zoo saib xyuas qhov ua haujlwm ntawm cov roj slinger. Cov roj slinger tsis tso cai rau daig. Cov roj cov khoom ntawm lub thrust disc thiab cov roj qib ntawm cov roj xa ntawv yuav tsum tau ua kom ntseeg tau.
3. Lubricate cov kabmob nrog cov roj qhuav. Ua tib zoo saib seb qhov tshwj xeeb ntawm cov roj qhuav yog raws li cov roj bearing thiab seb cov roj zoo puas zoo. Ntxiv roj tsis tu ncua los xyuas kom meej tias cov kabmob clearance yog 1/3 ~ 2/5.
4. Cov khoom siv sib khi ntawm cov bearings thiab cov kav dej txias yog nyob rau hauv qhov zoo los tiv thaiv cov dej thiab hmoov av los ntawm kev nkag mus rau cov bearings thiab ua rau lub cev lubrication ntawm cov bearings.
5. Lub installation clearance ntawm lubricating bearing muaj feem xyuam rau chav tsev siab ntawm bearing bush, linear ceev ntawm kev sib hloov, lubrication hom, roj viscosity, cov khoom ua, installation raug thiab vibration ntawm chav tsev.
3, Chav tsev vibration
(1) Mechanical vibration, vibration los ntawm mechanical vim li cas.
vim li cas; Ua ntej, hydraulic turbine yog biased; Qhov thib ob, qhov chaw nruab nrab ntawm lub turbine thiab lub tshuab hluav taws xob tsis sib haum thiab kev sib txuas tsis zoo; Thib peb, cov kabmob muaj qhov tsis xws lossis qhov kev hloov kho tsis raug, tshwj xeeb tshaj yog qhov kev tshem tawm loj dhau; 4. Kev sib txhuam thiab kev sib tsoo ntawm qhov sib hloov thiab qhov chaw nyob ruaj khov
(2) Hydraulic kev co, kev co ntawm chav tsev tshwm sim los ntawm qhov tsis sib xws ntawm cov dej ntws mus rau hauv tus khiav
Yog vim li cas: ua ntej, cov lus qhia vane tau puas lawm thiab cov bolts tau tawg, ua rau qhov qhib tsis sib xws ntawm cov lus qhia vane thiab cov dej tsis sib xws nyob ib ncig ntawm tus khiav; Qhov thib ob, muaj sundries nyob rau hauv lub volute los yog tus khiav yog thaiv los ntawm sundries, thiaj li hais tias cov dej ntws nyob ib ncig ntawm tus khiav yog uneven; Thib peb, cov dej ntws hauv cov raj xa dej tsis ruaj khov, uas ua rau lub sijhawm hloov pauv ntawm cov dej siab ntawm lub raj xa dej, lossis huab cua nkag mus rau hauv cov ntaub ntawv kauv ntawm hydraulic turbine, ua rau kev vibration ntawm chav tsev thiab lub suab nrov ntawm cov dej ntws.
(3) Kev co hluav taws xob yog hais txog chav tsev vibration tshwm sim los ntawm kev tsis sib haum lossis kev hloov pauv ntawm hluav taws xob tam sim.
Yog vim li cas: ua ntej, peb-theem tam sim no ntawm lub tshuab hluav taws xob yog qhov tsis sib npaug. Vim qhov tsis sib xws tam sim no, peb-theem electromagnetic quab yuam tsis sib npaug; Qhov thib ob, qhov hloov pauv tam sim no los ntawm kev sib tsoo hluav taws xob ua rau lub tshuab hluav taws xob ceev thiab turbine tsis tuaj yeem synchronize tam sim ntawd; Thib peb, qhov sib txawv ntawm stator thiab rotor tsis sib npaug, uas ua rau tsis muaj kev ruaj ntseg ntawm rotating magnetic teb.
(4) Cavitation vibration, chav tsev vibration tshwm sim los ntawm cavitation.
Yog vim li cas: ua ntej, qhov kev co tshwm sim los ntawm hydraulic imbalance, uas nws amplitude nce nrog qhov nce ntawm ntws; Qhov thib ob yog qhov kev vibration tshwm sim los ntawm qhov tsis sib xws los ntawm qhov hnyav eccentric ntawm tus khiav, kev sib txuas tsis zoo ntawm chav tsev thiab qhov eccentricity, thiab qhov amplitude nce nrog qhov nce ntawm qhov kev sib hloov ceev; Qhov thib peb yog kev vibration los ntawm cov hluav taws xob nto. Lub amplitude nce nrog qhov nce ntawm excitation tam sim no. Thaum lub excitation raug tshem tawm, qhov kev vibration tuaj yeem ploj mus; Qhov thib plaub yog kev vibration los ntawm cavitation yaig. Nws amplitude muaj feem xyuam rau lub regional load, qee zaum cuam tshuam thiab qee zaum ua phem. Nyob rau tib lub sijhawm, muaj lub suab nrov hauv lub raj cua ntsawj ntshab, thiab tej zaum yuav muaj qhov tshwm sim ntawm lub tshuab nqus tsev vacuum.
4, Unit bearing ncoo kub nce thiab siab heev
(1) Yog vim li cas
1. Kev tu thiab kev txhim kho yog vim li cas: cov roj phwj xau, pitot tube installation txoj haujlwm tsis raug, qhov sib txawv ntawm cov nplais tsis ua raws li qhov yuav tsum tau ua, thiab chav tsev vibration tshwm sim los ntawm kev teeb tsa zoo yog txawv txav;
2. Kev khiav hauj lwm vim li cas: kev khiav hauj lwm hauv cheeb tsam vibration, tsis ntxiv roj raws sij hawm vim qhov txawv txav ntawm cov roj zoo thiab qib roj, tsis ua raws li kev cuam tshuam ntawm cov dej txias thiab cov dej ntim tsis txaus, ua rau lub sijhawm ua haujlwm tsis zoo ntawm lub tshuab.
(2) Kev ua haujlwm
1. Thaum cov kabmob kub nce, ua ntej xyuas cov roj lubricating, thiab ncua sijhawm ntxiv lossis tiv tauj los hloov cov roj; Kho cov dej txias txias los yog hloov cov khoom siv dej; Kuaj seb qhov kev vibration ntawm chav tsev tshaj li tus qauv. Yog tias qhov kev vibration tsis tuaj yeem raug tshem tawm, lub tsev yuav tsum raug kaw;
2. Nyob rau hauv cov ntaub ntawv ntawm qhov hluav taws xob tiv thaiv qhov kub thiab txias, saib xyuas seb lub kaw lus puas zoo li qub, thiab xyuas seb cov kab hluav taws xob puas raug hlawv. Thaum lub Bush yog hlawv, hloov nws nrog ib tug tshiab los yog zom nws dua.
5 、 Kev tswj ceev ceev tsis ua haujlwm
Thaum tus tswv xeev qhib tag nrho, tus neeg khiav dej num tsis tuaj yeem nres kom txog thaum cov lus qhia qhib lub qhov rooj qhib tsis tuaj yeem tswj tau zoo, uas yog hu ua kev tswj ceev tsis ua haujlwm. Yog vim li cas: ua ntej, cov lus qhia vane kev twb kev txuas yog khoov, uas tsis muaj peev xwm tswj tau qhov qhib ntawm phau ntawv qhia vane, uas ua rau cov lus qhia vane tsis tuaj yeem raug kaw thiab chav tsev tsis tuaj yeem nres. Nws yuav tsum raug sau tseg tias qee qhov me me tsis muaj cov khoom siv braking, thiab lub tsev tsis tuaj yeem nres ib ntus raws li qhov kev txiav txim ntawm inertia. Lub sijhawm no, tsis txhob yuam kev tias nws tsis tau raug kaw. Yog tias koj txuas ntxiv kaw qhov kev qhia vane, tus pas txuas txuas yuav raug khoov. Qhov thib ob, kev tswj hwm kev ceev tsis ua haujlwm yog tshwm sim los ntawm qhov tsis ua haujlwm ntawm tus tswv xeev tsis siv neeg. Nyob rau hauv cov ntaub ntawv ntawm kev ua haujlwm txawv txav ntawm chav dej turbine, tshwj xeeb tshaj yog thaum muaj kev kub ntxhov rau kev ua haujlwm nyab xeeb ntawm chav tsev, sim nres lub tshuab tam sim rau kev kho mob. Tsis kam khiav yuav tsuas loj qhov txhaum. Yog tias tus tswv xeev ua tsis tiav thiab cov lus qhia qhib lub tshuab tsis tuaj yeem nres, lub ntsiab valve ntawm lub turbine yuav tsum raug siv los txiav cov dej ntws mus rau hauv lub turbine.
Lwm txoj kev kho mob: 1. Tsis tu ncua ntxuav lub sundries ntawm cov dej qhia mechanism, kom nws huv si, thiab tsis tu ncua refuel lub movable qhov chaw; 2. Cov khib nyiab khib nyiab yuav tsum tau muab tso rau ntawm qhov nkag thiab tsis tu ncua; 3. Rau cov hydraulic turbine nrog txhua lub tsheb, ua tib zoo saib xyuas kom lub sijhawm hloov lub nres nres thiab ntxiv cov roj nres.
Post lub sij hawm: Jun-28-2022
