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Ua hauj lwm hauv paus ntsiab lus ntawm magnetic twj tso kua mis

Sijhawm: 2021-05-11 Ntaus: 277

Lub twj tso kua mis sib nqus yog tsim los ntawm peb ntu: lub twj tso kua mis, lub tshuab sib nqus, thiab lub cev muaj zog. Cov khoom tseem ceeb ntawm lub tshuab magnetic muaj ib qho sib nqus rotor sab nraud, ib sab hauv magnetic rotor thiab lub tes tsho tsis sib nqus. Thaum lub cev muaj zog tsav lub sab nraud magnetic rotor tig, lub magnetic teb tuaj yeem nkag mus rau hauv huab cua sib txawv thiab cov ntaub ntawv tsis sib nqus, thiab tsav lub puab tsaig sib nqus rotor txuas nrog lub impeller kom tig synchronously, paub txog qhov tsis sib txuas ntawm lub zog, thiab hloov lub zog. foob ​​rau hauv ib lub foob zoo li qub. Vim hais tias lub twj tso kua mis thiab cov hlau nplaum sab hauv lub rotor yog tag nrho los ntawm lub twj tso kua mis lub cev thiab lub tes tsho cais, qhov teeb meem ntawm "khiav, emitting, dripping, thiab to" yog daws tau tag nrho, thiab cov xau ntawm flammable, explosive, lom thiab teeb meem tawm hauv lub refining thiab tshuaj lom neeg kev lag luam los ntawm lub twj tso kua mis foob raug tshem tawm. Qhov kev nyab xeeb muaj peev xwm ua tau zoo ua kom muaj kev noj qab haus huv ntawm lub cev thiab lub hlwb thiab kev nyab xeeb ntawm cov neeg ua haujlwm.

1. Lub hauv paus ntsiab lus ntawm kev sib nqus twj tso kua mis
N khub ntawm cov hlau nplaum (n yog ib tus lej) tau sib sau ua ke ntawm cov hlau nplaum sab hauv thiab sab nrauv ntawm cov hlau nplaum sib nqus hauv kev sib xyaw ua ke, kom cov hlau nplaum qhov chaw tsim kom muaj kev sib txuam ua ke sib nqus ua ke. Thaum cov hlau nplaum sab hauv thiab sab nrauv yog qhov sib txawv ntawm ib leeg, uas yog, lub kaum sab xis ntawm qhov sib nqus ntawm ob txoj kab hlau nplaum Φ = 0, lub zog sib nqus ntawm cov hlau nplaum yog qhov qis tshaj nyob rau lub sijhawm no; Thaum cov hlau nplaum tig mus rau tib tus ncej, lub kaum sab xis txav ntawm ob lub sib nqus ncej Φ = 2π / n, lub zog sib nqus ntawm cov hlau nplaum yog qhov siab tshaj plaws nyob rau lub sijhawm no. Tom qab tshem tawm cov quab yuam sab nraud, txij li cov hlau nplaum ntawm cov hlau nplaum sib nqus sib nqus sib nqus, lub zog sib nqus yuav rov ua kom cov hlau nplaum rov qab mus rau qhov qis tshaj lub zog sib nqus. Tom qab ntawd cov hlau nplaum txav, tsav cov hlau nplaum rotor tig.

2. Cov yam ntxwv zoo
1. Cov hlau nplaum ruaj khov
Cov hlau nplaum tas mus li ua los ntawm cov khoom siv hlau nplaum tsis tshua muaj hauv ntiaj teb muaj qhov dav dav ntawm kev ua haujlwm kub (-45-400 ° C), siab coercivity, thiab zoo anisotropy nyob rau hauv cov kev taw qhia ntawm magnetic teb. Demagnetization yuav tsis tshwm sim thaum tib tus ncej nyob ze. Nws yog ib qhov zoo ntawm magnetic teb.
2. Lub tes tsho cais
Thaum siv lub tes tsho hlau cais, lub tes tsho cais yog nyob rau hauv ib qho kev sib nqus sib nqus sib nqus, thiab eddy tam sim no yog induced nyob rau hauv tus ntoo khaub lig seem perpendicular mus rau cov kev taw qhia ntawm lub magnetic quab yuam kab thiab hloov mus rau hauv tshav kub. Qhov kev qhia ntawm eddy tam sim no yog: qhov twg Pe-eddy tam sim no; K- tas li; n-rated ceev ntawm lub twj tso kua mis; T-magnetic kis torque; F-siab nyob rau hauv lub spacer; D-hauv txoj kab uas hla ntawm lub spacer; resistivity ntawm cov khoom; - khoom Lub zog tensile. Thaum lub twj tso kua mis tsim, n thiab T tau muab los ntawm kev ua haujlwm. Txhawm rau txo qhov eddy tam sim no tsuas yog txiav txim siab los ntawm F, D, thiab lwm yam. Lub tes tsho cais tawm yog ua los ntawm cov khoom siv tsis yog xim hlau uas muaj kev tiv thaiv siab thiab lub zog siab, uas ua tau zoo heev hauv kev txo cov eddy tam sim no.

3. Kev tswj cov roj lubricating txias
Thaum lub twj tso kua mis sib nqus khiav, cov kua me me yuav tsum tau siv los ntxuav thiab txias qhov sib txawv ntawm thaj tsam ntawm lub puab tsaig sib nqus rotor thiab lub tes tsho cais thiab kev sib txhuam ntawm cov zawv zawg kabmob. Tus nqi ntws ntawm lub coolant feem ntau yog 2% -3% ntawm tus qauv tsim tus nqi ntawm lub twj tso kua mis. Lub annulus cheeb tsam ntawm lub puab magnetic rotor thiab lub tes tsho cais generates kub vim eddy tam sim no. Thaum lub lubricant txias tsis txaus los yog lub qhov dej ntws tsis zoo los yog thaiv, qhov kub ntawm qhov nruab nrab yuav siab tshaj qhov kub ntawm cov hlau nplaum ua haujlwm, thiab cov hlau nplaum sab hauv lub rotor yuav maj mam poob nws cov hlau nplaum thiab cov hlau nplaum yuav ua tsis tiav. Thaum qhov nruab nrab yog dej los yog dej-raws li cov kua dej, qhov kub nce hauv cheeb tsam annulus tuaj yeem tswj tau ntawm 3-5 ° C; Thaum qhov nruab nrab yog hydrocarbon lossis roj, qhov kub nce hauv thaj tsam annulus tuaj yeem khaws cia ntawm 5-8 ° C.

4. zawv zawg bearing
Cov ntaub ntawv ntawm zawv zawg bearings ntawm cov twj sib nqus yog impregnated graphite, ntim nrog polytetrafluoroethylene, engineering ceramics thiab lwm yam. Vim tias engineering ceramics muaj cov cua kub zoo, tiv thaiv corrosion, thiab kev sib txhuam tsis zoo, zawv zawg bearings ntawm cov twj sib nqus feem ntau yog ua los ntawm engineering ceramics. Vim hais tias engineering ceramics yog nkig heev thiab muaj me me expansion coefficient, lub bearing clearance yuav tsum tsis txhob me me heev kom tsis txhob muaj ncej dai xwm txheej.
Txij li cov zawv zawg bearings ntawm lub tshuab nqus tsev twj tso kua mis yog lubricated los ntawm qhov nruab nrab conveyed, cov ntaub ntawv sib txawv yuav tsum tau siv los ua cov bearings raws li cov xov xwm sib txawv thiab kev ua haujlwm.

5. Kev tiv thaiv
Thaum cov tsav ib feem ntawm lub magnetic drive khiav nyob rau hauv overload los yog lub rotor yog daig, lub ntsiab thiab tsav qhov chaw ntawm lub magnetic drive yuav cia li plam tawm los tiv thaiv lub twj tso kua mis. Nyob rau lub sijhawm no, cov hlau nplaum ruaj khov ntawm lub tshuab nqus hlau nplaum yuav ua rau poob thiab sib nqus poob hauv qhov kev txiav txim ntawm kev sib nqus sib nqus ntawm lub rotor nquag, uas yuav ua rau qhov kub thiab txias ntawm cov hlau nplaum ruaj khov nce thiab cov hlau nplaum ua kom plam thiab ua tsis tiav. .
Peb, qhov zoo ntawm lub twj tso kua mis sib nqus
Piv nrog cov twj tso kua mis centrifugal uas siv cov tshuab foob lossis ntim cov ntsaws ruaj ruaj, cov twj sib nqus muaj qhov zoo hauv qab no.
1. Lub twj tso kua mis hloov pauv ntawm lub foob dynamic mus rau lub kaw zoo li qub, kom tsis txhob muaj qhov nruab nrab to.
2. Tsis tas yuav muaj kev ywj pheej lubrication thiab dej txias, uas txo kev siv zog.
3. Los ntawm coupling kis mus rau synchronous luag, tsis muaj kev sib cuag thiab kev sib txhuam. Nws muaj kev siv hluav taws xob tsawg, kev ua haujlwm siab, thiab muaj cov nyhuv damping thiab kev co, uas txo cov kev cuam tshuam ntawm lub cev muaj zog ntawm lub tshuab nqus tsev twj tso kua mis thiab qhov cuam tshuam rau lub cev muaj zog thaum lub twj tso kua mis tshwm sim cavitation kev co.
4. Thaum overloaded, lub puab thiab sab nraud sib nqus rotors plam kuj, uas tiv thaiv lub cev muaj zog thiab twj tso kua mis.
Plaub, kev ceev faj ua haujlwm
1. Tiv thaiv cov khoom kom tsis txhob nkag mus
(1) Ferromagnetic impurities thiab hais tsis pub nkag mus rau hauv lub tshuab nqus tsev twj tso kua mis thiab bearing kev sib txhuam khub.
(2) Tom qab thauj cov nruab nrab uas yooj yim rau crystallize los yog precipitate, yaug nws nyob rau hauv lub sij hawm (dej huv si rau hauv lub twj tso kua mis kab noj hniav tom qab tso tseg lub twj tso kua mis, thiab ntws nws tom qab 1 min ntawm kev ua hauj lwm) los xyuas kom meej lub neej kev pab cuam ntawm zawv zawg bearings .
(3) Thaum thauj cov khoom nruab nrab uas muaj cov khoom siv, nws yuav tsum tau lim ntawm qhov nkag ntawm lub twj tso kua mis ntws.
2. Tiv thaiv demagnetization
(1) Lub tshuab nqus hlau nqus torque tsis tuaj yeem tsim me me heev.
(2) Nws yuav tsum tau ua raws li qhov ntsuas kub, thiab qhov nruab nrab kub yog nruj me ntsis txwv tsis pub tshaj tus qauv. Lub platinum kuj kub sensor tuaj yeem ntsia tau rau sab nrauv ntawm lub tes tsho sib nqus twj tso kua mis kom pom qhov kub nce hauv thaj tsam annulus, kom nws tuaj yeem tswb lossis kaw thaum qhov kub siab tshaj qhov txwv.
3. Tiv thaiv kev sib txhuam qhuav
(1) Idling yog txwv tsis pub.
(2) Nws yog txwv tsis pub khiav tawm hauv nruab nrab.
(3) Nrog lub qhov hluav taws xob lub qhov hluav taws xob kaw, lub twj tso kua mis yuav tsum tsis txhob khiav tsis tu ncua rau ntau tshaj 2 feeb kom tsis txhob muaj qhov sib nqus actuator los ntawm overheating thiab ua tsis tiav.