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Kushanda nheyo yemagineti pombi

Nguva: 2021-05-11 Hits: 379

Iyo magineti pombi inoumbwa nezvikamu zvitatu: pombi, magineti drive, uye mota. Chinhu chakakosha cheiyo magineti drive ine yekunze magineti rotor, yemukati magineti rotor uye isiri-magnetic isolation sleeve. Kana mota ichityaira yekunze magineti rotor kuti itenderere, iyo magineti inogona kupinda mukati memhepo gap uye zvisiri-magineti zvinhu, uye kutyaira iyo yemukati magineti rotor yakabatana kune impeller kuti itenderere synchronously, kuona iyo isingabatike kutapurirana kwesimba, uye kushandura simba. chisimbiso muchisimbiso chakamira. Nekuti iyo pombi shaft uye yemukati magineti rotor yakavharirwa zvachose nemuviri wepombi uye yekuzviparadzanisa sleeve, dambudziko re "kumhanya, kubudisa, kudonha, uye kuvuza" rinogadziriswa zvachose, uye kuvuza kweanopisa, anoputika, ane chepfu uye anokuvadza media mukati. iyo yekunatsa uye indasitiri yemakemikari kuburikidza nechisimbiso chepombi inobviswa. Njodzi dzinogona kuitika dzinoita kuti hutano hwemuviri nepfungwa uye kugadzirwa kwevashandi kuve kwakachengeteka.

1. Kushanda nheyo yemagineti pombi
N pairs dzemagineti (n in an even number) anounganidzwa mukati nekunze magineti rotor yemagnetic actuator muhurongwa hwenguva dzose, kuitira kuti zvikamu zvemagineti zviumbe yakakwana yakabatana magineti system kune imwe neimwe. Kana mukati nekunze magineti matanda akatarisana kune mumwe nemumwe, ndiko kuti, kuchinjika angle pakati pemagineti mapango Φ=0, iyo magineti simba remagineti system ndiyo yakaderera panguva ino; apo magineti matanda anotenderera kune imwechete danda, iyo yekuchinjisa angle pakati pemagineti matanda Φ = 2π / n, iyo magineti simba remagineti system yakakura panguva ino. Mushure mekubvisa simba rekunze, sezvo magineti mapango eiyo magineti system achidzosera mumwe kune mumwe, simba remagineti rinodzoreredza magineti kune yakaderera magineti simba. Ipapo magineti anofamba, achityaira iyo magineti rotor kutenderera.

2. Mamiriro ezvinhu
1. Permanent magineti
Magineti echigarire akagadzirwa neasingawanzo pasi echigarire magineti zvinhu ane yakakura yekushanda tembiricha renji (-45-400 ° C), yakakwirira coercivity, uye yakanaka anisotropy mugwara remagineti. Demagnetization haizoitike kana mapango akafanana ari pedyo. Icho chitubu chakanaka chemagnetic field.
2. Sleeve yekuzviparadzanisa nevamwe
Kana simbi yekuparadzanisa sleeve inoshandiswa, sleeve yekuzviparadzanisa iri mu sinusoidal alternating magnetic field, uye eddy current inonyandurwa muchikamu chemuchinjikwa perpendicular kune nzira yemagnetic force line uye inoshandurwa kuita kupisa. Chirevo che eddy current ndechekuti: kupi Pe-eddy current; K-constant; n-yakatemerwa kumhanya kwepombi; T-magnetic transmission torque; F-kumanikidza mu spacer; D-mukati dhayamita ye spacer; resistivity of a material;-material The tensile strength. Apo pombi yakagadzirwa, n uye T inopiwa nemamiriro ekushanda. Kudzikisa eddy ikozvino inogona kungotariswa kubva kune zvikamu zveF, D, zvichingodaro. Sleeve yekuzviparadzanisa inogadzirwa nezvinhu zvisiri-metallic zvine high resistivity uye simba guru, iro rinonyanya kushanda mukuderedza eddy ikozvino.

3. Kudzora kwekutonhodza lubricant kuyerera
Kana iyo magineti pombi ichimhanya, mvura shoma shoma inofanira kushandiswa kugeza nekutonhodza annular gap nzvimbo pakati pemukati magineti rotor uye sleeve yekuzviparadzanisa uye friction peya yeinotsvedza. Kuyerera kwechinotonhorera kunowanzo 2% -3% yedhizaini yekuyerera kwepombi. Iyo annulus nzvimbo pakati pemukati magineti rotor uye sleeve yekuzviparadzanisa inoburitsa kupisa kwakanyanya nekuda kweeddy currents. Kana iyo yekutonhodza lubricant isina kukwana kana gomba rekutsvaira risina kutsvedzerera kana kuvharika, tembiricha yepakati ichakwira kupfuura tembiricha yekushanda yegineti isingaperi, uye iyo yemukati magineti rotor inozorasa magnetism uye iyo magineti drive ichatadza. Kana iyo yepakati iri mvura kana mvura-based liquid, kutonhora kunokwira munzvimbo ye annulus kunogona kuchengetedzwa pa 3-5 ° C; kana yepakati iri hydrocarbon kana mafuta, tembiricha inokwira munzvimbo ye annulus inogona kuchengetedzwa pa5-8 ° C.

4. Sliding bearing
Zvishandiso zvekutsvedza mabheji emagineti mapombi akaiswa graphite, akazadzwa ne polytetrafluoroethylene, engineering ceramics uye zvichingodaro. Nekuti mainjiniya ceramics ane yakanaka kupisa kupisa, corrosion resistance, uye friction resistance, anotsvedza magineti pombi anowanzo gadzirwa neinjiniya ceramics. Nekuti mainjiniya ceramics ane brittle uye ane diki yekuwedzera coefficient, iyo inotakura clearance haifanirwe kunge iri diki zvakanyanya kudzivirira tsaona yakaturika shaft.
Sezvo kutsvedza kwepombi yemagineti kuchizorwa nesvikiro rinofambiswa, zvinhu zvakasiyana zvinofanirwa kushandiswa kugadzira mabearings zvichienderana nemidhiya yakasiyana uye mamiriro ekushanda.

5. Matanho ekudzivirira
Kana chikamu chinotyairwa cheiyo magineti dhiraivha ichimhanya pasi pekuremerwa kana rotor yakanamira, makuru uye anotyairwa zvikamu zvemagnetic drive zvinongotsvedza kubva kudzivirira pombi. Panguva ino, magineti echigarire pane magineti actuator anoburitsa kurasikirwa kweeddy uye kurasikirwa kwemagineti pasi pechiito chekuchinjanisa magineti yeiyo inoshanda rotor, izvo zvinokonzeresa kuti tembiricha yegineti yekusingaperi ikwire uye iyo magineti actuator kutsvedza nekutadza. .
Tatu, zvakanakira zvemagineti pombi
Kuenzaniswa nemapombi ecentrifugal anoshandisa ma mechanical seals kana kurongedza zvisimbiso, magineti pombi ane zvinotevera zvakanakira.
1. Iyo pombi shaft inoshanduka kubva pachisimbiso chine simba kuenda kune yakavharwa static chisimbiso, ichidzivirira zvachose kudonha kwepakati.
2. Hapana chikonzero chekuzora yakazvimirira uye mvura inotonhorera, iyo inoderedza kushandiswa kwesimba.
3. Kubva pakubatanidza kutapurirana kune synchronous drag, hapana kuonana uye kukakavara. Iyo ine yakaderera simba rekushandisa, yakanyanya kushanda zvakanaka, uye ine damping uye vibration kuderedza mhedzisiro, iyo inoderedza kukanganiswa kwemota vibration pamagnetic pombi uye kukanganisa pamota kana pombi ikaitika cavitation vibration.
4. Kana yakawandisa, mukati uye kunze magnetic rotors inotsvedza zvishoma, iyo inodzivirira motokari uye pombi.
Chechina, maitiro ekudzivirira
1. Dzivirira zvidimbu kupinda
(1) Ferromagnetic tsvina uye zvimedu hazvibvumidzwe kupinda mune magineti pombi drive uye inotakura friction pairi.
(2) Mushure mekutakura svikiro iro riri nyore kupenya kana kunaya, rigeze nenguva (durura mvura yakachena mugomba repombi mushure mekumisa pombi, uye kuibvisa mushure memaminitsi 1 ekushanda) kuve nechokwadi chehupenyu hwesevhisi yekutsvedza. .
(3) Pakutakura svikiro rine zvimedu zvakasimba, inofanira kusefa painopinza pombi inoyerera pombi.
2. Kudzivirira demagnetization
(1) Iyo magineti pombi torque haigone kugadzirwa idiki zvakanyanya.
(2) Inofanirwa kushandiswa pasi pemamiriro ekushisa akataurwa, uye tembiricha yepakati inorambidzwa zvakanyanya kudarika mwero. A platinamu kuramba tembiricha sensor inogona kuiswa pamusoro pekunze kweiyo magineti pombi yekuzviparadzanisa sleeve kuti ione kukwira kwekushisa munzvimbo ye annulus, kuitira kuti igone kuvhundutsa kana kuvhara kana tembiricha yadarika muganhu.
3. Dzivirira kukakavara kwakaoma
(1) Idling inorambidzwa zvachose.
(2) Zvinorambidzwa zvachose kubvisa svikiro.
(3) Nevhavha yekubuda yakavharwa, pombi haifaniri kuenderera mberi kweanopfuura maminitsi maviri kudzivirira magnetic actuator kubva pakupisa uye kukundikana.1620721392374454

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