Categories Of Generating Teem Harmfulness

Qhov kev vibration ntawm hydro-generator teeb yog txawv ntawm cov tshuab hluav taws xob dav dav rau qee qhov.Chav tsev vibration tshwm sim yog pom tseeb, tab sis qhov kev vibration feem ntau muab zais.Ntxiv rau qhov kev vibration tshwm sim los ntawm kev sib hloov lossis kho ib feem ntawm lub tshuab nws tus kheej, kev cuam tshuam ntawm cov hluav taws xob thiab cov tshuab sib nqus sib nqus thiab cov dej ntws ua haujlwm ntawm cov dej ntws ntawm lub turbine ntawm kev vibration ntawm lub cev thiab nws cov khoom yuav tsum raug txiav txim siab. .Muaj ntau qhov laj thawj rau kev vibration ntawm hydro-generator teeb, thiab ntau qhov chaw vibration feem ntau tshwm sim ib txhij.Nws yog feem ntau ntseeg hais tias qhov cuam tshuam quab yuam qhov chaw ua rau lub zog vibration feem ntau yog los ntawm hydraulic, mechanical thiab hluav taws xob yam, uas cuam tshuam nrog ib leeg thiab feem ntau cuam tshuam ua ke los tsim kev co co.

Kev co ntawm lub tshuab hluav taws xob tsim hluav taws xob yuav tsis ua rau muaj kev puas tsuaj rau cov neeg coob, tab sis thaum qhov kev co siab tshaj qhov tso cai, tshwj xeeb tshaj yog nyob rau lub sij hawm vibration thiab resonance, lub hwj chim mov zoo, lub neej kev pab cuam ntawm lub tsev, kev ua tau zoo ntawm cov khoom pab thiab instrumentation, lub hauv paus ntawm chav tsev thiab cov vaj tse nyob ib puag ncig, thiab txawm tias tag nrho ua rau muaj kev puas tsuaj loj rau kev nyab xeeb thiab kev lag luam ntawm chaw nres tsheb hydropower.

Kev tsim teeb meem teeb meem tuaj yeem muab faib ua ob pawg hauv qab no:

Nws ua rau kev tsim thiab nthuav ntawm kev qaug zog kev puas tsuaj cheeb tsam ntawm cov hlau thiab vuam, ua rau cov kab nrib pleb, txawm tias pob txha puas thiab cov khoom seem.

Loosing ib co fasteners ntawm chav tsev yuav tsis tau tsuas yog ua rau lub rupture ntawm fasteners lawv tus kheej, tab sis kuj ua rau aggravate lub vibration ntawm cov khoom txuas thiab ua kom lawv puas.

Lub degree ntawm kev sib nrig sib coj ntawm lub rotating qhov chaw ntawm lub accelerating unit.Loj ncej viav vias nruj, ncej thiab bearing kub nce, bearing burning poob;Lub tshuab hluav taws xob rotor kev co loj dhau, nce qhov hnav ntawm lub nplhaib ntiv nplhaib thiab txhuam, nce qhov kub thiab txias, hlawv tawm cov kabmob hav txwv yeem, nce lub txim ntawm txhuam.

Lub vortex pulsating siab tsim nyob rau hauv lub tailpipe yuav ua rau lub overflow system oscillate, qhov tso zis ntawm chav tsev viav vias, thiab phab ntsa ntawm lub tailpipe tawg.Hauv qhov xwm txheej hnyav, tag nrho cov kev pabcuam tailpipe yuav raug puas tsuaj.

Qhov tshwm sim ntawm cov dej turbine resonance yog qhov hnyav dua.Piv txwv li, resonance ntawm chav tsev thiab cov nroj tsuag tuaj yeem ua rau tag nrho cov nroj tsuag thiab cov nroj tsuag sib txawv.

Hydraulic vibration yog qhov kev vibration los ntawm kev cuam tshuam ntawm hydrodynamic siab ntawm hydraulic ib feem ntawm lub turbine, uas yog hu ua hydraulic kev co.Cov yam ntxwv ntawm hydraulic ua rau muaj kev vibration feem ntau suav nrog: hydraulic instability tshwm sim los ntawm qhov tsawg zaus vortex band ntawm lub tailpipe, karman vortex system, hniav vortex, instability nyob rau hauv txoj kev hloov, hydraulic imbalance, kab noj hniav cavitation, clearance dav hlau (axial flow turbine) thiab lwm yam.

Qhov tsawg zaus vortex cheeb tsam nyob rau hauv lub tailpipe yog ib yam ntawm unsteady flow phenomenon ntawm lub tailpipe ntawm lub Francis turbine thiab axial nrug turbine nyob rau hauv ib nrab load.Thaum lub turbine ua hauj lwm nyob rau hauv lub off-tsim mob, lub siab pulsation feem ntau tshwm sim nyob rau hauv lub tailpipe vim lub zog ntawm rotating dej ntws, vortex shedding thiab cavitation ntawm lub qhov hluav taws xob khiav.Tshwj xeeb tshaj yog tom qab qhov tshwm sim ntawm qhov loj vortex band nyob rau hauv lub tailpipe, lub vortex band rotates nyob rau hauv cov yeeb nkab ntawm ib tug ze li ntawm tsau zaus, ua rau lub low-frequency siab pulsation ntawm cov dej ntws.Thaum cov dej ntws tshwm sim hauv lub raj, lub siab pulsation yuav ua rau kev co ntawm cov yeeb nkab phab ntsa, khiav, dej qhia mechanism, volute thiab siab yeeb nkab.

Kev tiv thaiv thiab kev kho mob:

Optimize hydraulic tsim.Ib tug tsis zoo lub kaum sab xis khiav lub airfoil, tsim nyog tsim ntawm qhov hluav taws xob sib faib txoj cai ntawm cov hniav, tsim nyog crown thiab paug cone, thiab ib tug khiav nrog auxiliary hniav tuaj yeem txiav txim siab rau lub taub hau siab sib xyaw khiav.

Nyob deb ntawm qhov chaw ua haujlwm vibration.Hloov tus nqi ntws thiab kev sib hloov ntawm cov dej ntws, xws li lengthening lub paug lub khob hliav qab, nce qhov ntev liner lub khob hliav qab, ua rau tus Tsov tus tw yeeb nkab lub khob hliav qab lub kaum sab xis, nce lub phaj baffle thiab baffle phaj, tswj vortex siv eccentricity , lwm.

Thaum lub sijhawm ua haujlwm ntawm chav tsev, cov khoom cua tsim nyog tau ua nyob rau hauv thaj chaw eddy tam sim no, feem ntau cov khoom siv cua, lossis yuam cua thaum tsim nyog.

Cov pawg saum toj no tau muab faib los ntawm Dingbo Power, yog tias koj muaj lus nug txog qhov diesel generators , pls hu rau Dingbo Power uas nws cov khoom npog Cummins, Perkins, Volvo, Yuchai, Shangchai, Deutz, Ricardo , MTU, Weichai thiab lwm yam.