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Hvad er en centrifugal pumpe? Hvordan virker det?

I centrifugalpumper, som med alle turbomachines, der er en vigtigste element kaldet løbehjulet, roterende en vinkelhastighed omkring en fast akse. Den simpleste formaf den centrifugalhjul fås ved centralt (radial) vinger mellem to parallelle diske. Hertil kommer, en af diskene er fortykkelse omkring aksen og forbinder til en mile. Somanført i nedenstående figur er en væske partikel inde løbehjulet roterer omkring rotationsakse med hastigheden på U = rωwith hjul, mens på den anden side den bevæger sig ifølge hjulet med W-hastigheden og blade. U får navnet på den relative hastighed af miljømæssige hastighed, W.

 

Når en væskefyldt løbehjulet starter spinning omkring aksen, begynder det at dukkefra væske B overfladen under indflydelse af centrifugale kræfter. Således er væskenabsorberes fra overfladen af E printet ud fra den overflade B.

 

Strømmen set af en roterende observatør med hjulet vil afvige fra strømmen af observatør i ubevægelig miljø. Hastigheden af en partikel, der bevæger sig inden for flow, ifølge en stationær observatør i ubevægelig miljø, har den absolutte hastighed, hastighed relative hastighed, at hjulet ser på det punkt, hvor en observatør spinningmed hjulet.

 

Absolutte hastighed er den vektorielle sum af C,-W, og du øger. Med den intensitetog ledelse af W og du hastigheder danner de en rektangulær kant. Denne grænse repræsenterer den absolutte hastighed af rektanglets diagonal. Kanterne af firkantenangiver den relative hastighed af W og omgivende hastighed du, afhængigt af intensiteten og retning af vold. Således, disse tre hastigheder danner en trekant. I beregninger, er en uendelig række af meget tynde wings handlet på tanken. I dette tilfældeer det acceptabelt at flow garn overvåges fuldt ud og at foderet er endimensionale.I tilfælde af ikke-effekt input er starten på fløjen tangent til den relative hastighed afinput. Med et andet udtryk er W1, hvilket gør en B1 vinkel med indtag kammer af pumperne, i samme retning som fløj profilen. Ligeledes er W2 hastighed, hvilket gøren β2 vinkel med udgangen af afkørslen fløj, i den samme retning. Retning af indgangen afhænger retning af den første fløj element i posten og orientering af hastigheden af indrejse når posten anmodes om at blive gennemført uden forvrængning og dermed forebygge tab. I pumper ender bladet under β2 vinkel på W2 relative hastighed.

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