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04-02

Dalian Roland Pump Co., Ltd.

DalianRolandPumpCo.,Ltd.isanenterprisespecializingintheR&D,designandmanufactureofspecialchemicalpumps.Thecompany'sleadingproductisahigh-powermagneticcentrifugalpump.
04-02

Eddy current loss of magnetic pump

Magneticpumpsusepermanentmagnetcouplingtoachievecontactlesspowertorquetransmission.Inthisway,apressure-bearingshellcanbeinstalledinthemagneticfieldairgaptoisolatetheworkingmediumfromtheatmosphere,sothatthenormalshaftdynamicsealbecomesastaticseal.Thepressure-bearingshelliscommonlyknownas"isolatingsleeve",anditsinstallationpositionandworkingconditionsdeterminethespecialrequirementsfortheperformanceofthematerial.Suchashighmechanicalstrength,non-ferromagnetic,highresistivity,corrosionresistanceandsoon.Amongtheconventionalmaterials,therearenomaterialsthatsatisfyalltheconditions.Indesperation,itisnecessarytousenon-ferromagneticandrelativelyhighresistivitymetalmaterials.Suchasausteniticstainlesssteel,Hastelloy,titaniumalloy,etc.
04-02

Sliding bearing problem

Theworkingrotorsupportofthemagneticpumpcanusuallyonlyuseslidingbearings,andrelyonthepumpedliquidforlubrication.Thefailureofthemagneticpumpisconcentratedinbearingdamage.Therefore,thereliabilityoftheslidingbearingisthekeyfactortoensurethecontinuousoperationlifeofthemagneticpumpunit.
04-02

Roland magnetic pump efficiency comparison

Inthesmallpowerrange,theRolandmagneticpumphasanefficiencyofabout8-12%higherthancomparableordinarymagneticpumpsandshieldedelectricpumps;itisabout2%lowerthanthemechanicalsealpump,andtheefficiencywhenitdeviatesfromtheBEPpointbyhalfItwillbeabout6%lower. TheoverallefficiencyofRolandhigh-powermagneticpumpisbasicallythesameasthatofcomparablemechanicalsealpump. (Explanation):Theslidingbearingandthemagneticcouplinginthemagneticpumpproducefrictionloss,butthelossvalueisarelativelyconstantamount.WhenrunningatasmallflowawayfromtheBEPpoint,theshaftpowerdecreases,andtheratiooffrictionlosstoshaftpowerincreasescomparedtotheBEPpoint.Whendrivingwithhighpower,theratioisverysmallandcanbeignored.
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Dalian Roland Pump Co., Ltd

Factory Address: Beihai Industrial Park, Houmu Village, Yingchengzi Street, Ganjingzi District, Dalian City office (marketing): Room 404, No. 9 Chengren Street, Shahekou District, Dalian City (Yindu Building)
Postcode:116021
Fax:0411-84620048
Website:
http://www.dlb.cn
Email:sales@dalian-pumps.com

 

Contact Us

Sales: Mr. Liu      Tel:15940909967
Sales: Mr. Tang   Tel:13904281362

Dalian Roland Pump Co., Ltd

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