Dab tsi yog shielded twj tso kua mis? Shielded twj tso kua mis, tseem hu ua unsealed centrifugal twj tso kua mis los yog lub twj tso kua mis suab nrov. Nws txuas lub impeller thiab lub rotor ntawm lub tshuab hluav taws xob ua ke thiab muab tso rau hauv cov kua xa tawm, tsis zoo li feem ntau cov twj centrifugal uas txuas nrog lub tshuab hluav taws xob los ntawm kev sib txuas. Lawv raug kaw nyob rau hauv tib lub plhaub, tsis tas yuav tsum tau ntim khoom lossis cov khoom siv kho tshuab, tshem tawm cov kua dej tawm. Txhawm rau tiv thaiv kev sib cuag ntawm cov kua xa tawm thiab cov khoom siv hluav taws xob, lub stator thiab rotor ntawm lub cev muaj zog raug cais tawm ntawm cov kua siv cov hlau tsis sib nqus hlau nyias-walled lub tog raj kheej (shielding tes tsho). Qhov no yog qhov sib txawv ntawm cov twj tso kua mis thiab cov twj centrifugal. Lub tshuab hluav taws xob siv hauv lub twj tso kua mis no yog lub tshuab hluav taws xob semi qhuav submersible.
Muaj ntau hom kev tiv thaiv twj tso kua mis, cais raws li lawv cov ntaub ntawv ua haujlwm impeller, suav nrog cov twj centrifugal thiab vortex; Raws li tus naj npawb ntawm cov impellers ua haujlwm, muaj ib theem thiab ntau theem; Raws li kev npaj ntawm nws lub tshuab hluav taws xob thiab lub twj tso kua mis, muaj hom kab rov tav thiab ntsug.
Cov twj tso kua mis shielded yog tsim rau thauj corrosive, flammable, explosive, heev toxic, radioactive, thiab tsis tshua muaj nqi kua. Nws kuj tseem tsim nyog rau kev thauj cov kua dej nrog kev kub siab, kub siab, qis kub, thiab siab melting point. Vim nws lub peev xwm los tiv thaiv cov kua xau, cov twj tso kua mis shielded yog siv dav hauv kev tiv thaiv, tshuaj, roj av thiab lwm yam haujlwm.
Cov twj tso kua mis shielded tau tshwm sim nyob rau xyoo 1930, suav txog ntau dua 20% ntawm tag nrho cov khoom siv tshuaj (cov twj siv tshuaj tiv thaiv corrosion), thiab ntau lub teb chaws muaj cov khoom lag luam.