quinta aula.pptx
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Transcript of quinta aula.pptx
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8/15/2019 quinta aula.pptx
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UNIVERSIDADE FEDERAL DE PELOTASESCOLA DE ENGENHARIA
HIDRÁULICA DE CONDUTOS FORÇADOS
QUINTA AULA
VÁLVULAS HIDRAULICAS
Eng. Elet. Amilca Oli!eia "a#m$ %Sc Eng.
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VÁLVULAS DE "LOQUEIO &"LOC' ( VALVES)
- válvula de gaveta (gate valves)
- válvula de macho (plug, cock valves)- válvulas de esfera (ball valves)
- válvulas de comporta (slide, blast valves)
De*tinam(*e a e*ta+elece ,# inte,m-e , #/,. C,*t#mam *e0e me*m, 0i1met, 0a t#+#la23,.
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VÁLVULAS DE REGULAGE% &THROTTLING VALVES)
( !4l!#la* 0e gl,+, &gl,+e !al!e*)( !4l!#la* 0e ag#l5a &nee0le !al!e*)( !4l!#la* 0e c,nt,le &c,nt,l !al!e*)( !4l!#la* 0e +,+,leta &+#tte6 !al!e*)( !4l!#la* 0e 0ia7agma &0ia-5agm !al!e*)
Utili8a0a* -aa c,nt,la , #/,$ -,0en0, ta+al5a em 9#al9#e-,*i23, 0e 7ec5ament, -acial. P, m,ti!, 0e ec,n,mia -,0em *e 0e0i1met, in7ei, a, 0a t#+#la23,. O* 0,i* :ltim,* ti-,* acima tam+;m-,0em ta+al5a c,m, !4l!#la* 0e +l,9#ei,.
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VÁLVULAS QUE PER%ITE% O FLU !al!e* ( em +a*e 0e t#+#la2?e*7,2a0a*)( !4l!#la* 0e eten23, e 7ec5ament, &*t,-(c5ec> !al!e*)( !4l!#la* 0e -; &7,,t !al!e* ( em *#c2?e*)
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VÁLVULAS QUE CONTROLA% A PRESS@O DE %ONTANTE
( !4l!#la* 0e *eg#an2a e 0e al!i, &*a7et6$ elie7 !al!e*)( !4l!#la* 0e e/ce**, 0e !a83, &e/ce** ,B !al!e*)( !4l!#la* 0e c,nta -e**3, &+ac>(-e**#e !al!e*)