Samenvatting Duidelijk overzicht

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Summary

Samenvatting Duidelijk overzicht

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2023/2024

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Belangrijkste processen en verschillen van de laatste hoofdstukken.

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Zuigermachines Stromingsmachines
Zuiger In- en uitlaat niet meer gescheiden door
kleppen
VD: aantal machine onderdelen kleiner,
goedkoper
ND: terugstroom van uitlaat naar inlaat als
pomp stopt
Zuigerpompen: vloeistof Turbopompen: vloeistof
Eenheidsvolume: construcBef vast -> Vs
z = toerental aandrijvende motor
Debiet Q: Debiet Q:
- vaste waarde bij een vast toerental - Hangt af van installaBe waar je de pomp
- onaIankelijk geleverde druk gaat inbouwen
- IntermiJerend debiet - GelijkmaBg

Geleverde druk: komt van de gebruiker Geleverde druk: komt ook van de gebruiker
Aanzuighoogte:
- theorie niet meer dan 10 meter
- prakBjk nog lager door verliezen &
traagheidskrachten : 8 meter ofzo
PV-diagram theoreBsch

PV-diagram werkelijk

CavitaBe mogelijk CavitaBe mogelijk
Oplossing cavitaBe: accumulator
Ogenblikkelijk debiet kruk-
drijfstangmechanisme: sinusuidaal verloop
Tijdens zuigstap geen debiet naar de bruiker
-> Heel grote accumulator voorzien op
persleiding

1

, Oplossing: 2 gedefaseerde zuigers / cilinders:
krukken 180° gedefaseerd

-> harmonisch verloop: ogenblikkelijk debiet
nog alBjd nul op momenten, maar heel
kortstondig
-> geen halve cyclus meer waar debiet nul blijX
Oplossing: 3 krukken 120° defaseren

-> rimpel op debiet: kleiner dan net
-> ogenblikkelijk debiet nooit meer op nul
-> machine vergroot sterk in omvang
Oplossing: dubbelwerkende zuigerpomp
-> Geen extra zuiger
-> Wel extra kleppen
-> Extra afdichBng nodig: moeilijk met
bewegende stang erdoor

Enkelwerkende zuigerpomp Centrifugaalpomp
Dubbelwerkende zuigerpomp Meertrapspompen om druk te verhogen
Plunjerpomp in lijn Diepboorpomp
Axiaalplunjerpomp met 6 zuigers Vuilwaterpomp: rotor net buiten stator &
- kleiner minder schoepen
- minder lek
- minder lawaai
- betere prestaBes

2

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Study: Handelsingenieur
Uploaded on: October 10, 2024
Number of pages: 8
Written in: 2023/2024
Type: Summary

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