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Che cosa è una pompa centrifuga? Come funziona?

Nelle pompe centrifughe, come con tutte le turbomacchine, c'è un elemento principale chiamato la girante, ruotando una velocità angolare attorno all'asse fisso. La forma più semplice della girante centrifuga è ottenuta da Ali (radiali) centrali tra due dischi paralleli. Inoltre, uno dei dischi è ispessimento intorno all'asse e si connette a un miglio. Come indicato nella figura seguente, una particella di fluido all'interno della girante ruota intorno all'asse di rotazione con la velocità di U = rωwith la ruota, mentre dall'altro, si muove secondo la ruota con la W-velocità e le foglie. U ottiene il nome della velocità relativa della velocità ambientale, W.

 

Quando una girante fluido-riempita comincia girare intorno all'asse, comincia ad emergere dalla superficie del liquido B sotto l'influenza delle forze centrifughe. Così, il fluido assorbito dalla superficie della e viene stampato dalla superficie B.

 

Il flusso visto da un osservatore rotante con la ruota si discosta dal flusso dell'osservatore nell'ambiente immobile. La velocità di una particella che si muove all'interno del flusso, secondo un osservatore stazionario nell'ambiente immobile, ha la rapidità assoluta, la velocità relativa velocità che la ruota vede nel punto in cui un osservatore gira con la ruota.

 

Velocità assoluta è la somma vettoriale di C, W, e si velocità. Con l'intensità e la direzione del W e velocità, formano un bordo rettangolare. Questa soglia rappresenta la velocità assoluta della diagonale del rettangolo. I bordi del rettangolo indicano la velocità relativa di W e la velocità ambientale, a seconda dell'intensità e della direzione della violenza. Così, queste tre velocità formano un triangolo. Nei calcoli, un numero infinito di ali molto sottili sono agito sul pensiero. In questo caso, è accettabile che i filati di flusso siano completamente controllati e che il mangime sia una dimensione. In caso di ingresso non di impatto, l'inizio dell'anta è tangente alla velocità relativa di ingresso. Con un'altra espressione, il tasso di W1, che fa un angolo β1 con la camera di aspirazione delle pompe, è nella stessa direzione del profilo alare. Inoltre, la velocità di W2, che fa un angolo β2 con la conclusione dell'uscita dell'ala, è nello stesso senso. La direzione dell'ingresso dipende dalla direzione del primo elemento alare nella voce e dall'orientamento della velocità di ingresso quando si richiede di effettuare l'immissione senza distorsione e quindi impedendone le perdite. Nelle pompe, la lama termina sotto l'angolo β2 della velocità relativa W2.

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