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Какво е центробежна помпа? Как работи това?

В центробежни помпи, както и при всички turbomachines, има основен елемент, наречен работно колело, въртящи се ъглова скорост около фиксираната ос. Най-простата форма на центробежно работно колело се получава от Централно (радиални) крила между две успоредни дискове. В допълнение, един от дисковете е сгъстяване около оста и се свързва с една миля. Както е посочено в следната фигура, течност частица вътре в работното колело се върти около ротационната ос със скоростта на U = rωwith на колелото, а от друга страна, тя се движи по колелото с W-скорост и листа. U получава името на относителната скорост на околната среда скорост, W.

 

Когато напълнена с течност работно колело започва върти около оста, тя започва да се появяват от течността б повърхност под влиянието на центробежни сили. Така, течността, погълната от повърхността на E е отпечатана от повърхността б.

 

Потокът видян от въртящ се наблюдател с колелото ще се различава от потока на наблюдател в неподвижно среда. Скоростта на частиците се движат в рамките на потока, според стационарен наблюдател в неподвижно среда, има абсолютна скорост, скоростта относителна скорост, че колелото вижда в точката, където един наблюдател се върти с колелото.

 

Абсолютна скорост е векторна сума на C, W, и ви скорости. С интензитета и посоката на W и ви скорости, те образуват правоъгълна ръба. Този праг представлява абсолютната скорост на диагонала на правоъгълника. Ръбовете на правоъгълника показват относителната скорост на W и скоростта на околната среда на вас, в зависимост от интензивността и посоката на насилие. По този начин, тези три скорости образуват триъгълник. В изчисленията, безкраен брой на много тънки крила са действали на мисълта. В този случай е приемливо, че потокът прежди са напълно наблюдавани и че фуражът е едно измерение. В случай на неударен вход, началото на крилото е допирателна към относителната скорост на въвеждане. С друг израз, скоростта на W1, което прави β1 ъгъл с приемната камера на помпите, е в същата посока като крилото профил. По същия начин, W2 скорост, която прави β2 ъгъл с края на крилото изход, е в същата посока. Посоката на въвеждане зависи от посоката на първия елемент на крилото в навлизането и ориентацията на скоростта на влизане, когато се иска вписването да се извърши без изкривяване и по този начин да се предотвратят загубите. В помпи, острието завършва под β2 ъгъл на относителната W2 скорост.

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