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Tegnologie

Graad 9

Hidrouliese en pneumatiese stelsels

Module 10

Die werking van ‘n hidrouliese stelsel

AKTIWITEIT 1:

Om die werking van ’n hidrouliese stelsel te beskryf

[LU 1.3, 2.3]

Pneumatiese en hidrouliese stelsels is sisteme wat beheer uitoefen sodat die inset-uitsetverhouding so verander dat take, met minder krag, vinniger verrig kan word.

  • Daar is twee soorte hidrouliese stelsels:
  • ’n Oop hidrouliese stelsel: Dit bestaan uit ‘n vloeistof wat onder druk die sisteem verlaat, byvoorbeeld water in ’n tuinslang met ’n drukkop.Die sisteem kan ook bestaan uit water wat in ’n pyp vloei waar daar ’n drukverskil is. Dink aan die groot voordeel wat die toestel aan besproeiingsboere bied.
  • ’n Geslote hidrouliese stelsel: Dit bestaan uit ’n verseëlde eenheid bestaande uit twee suiers wat met ’n pyp of reservoir aan mekaar verbind is. ’n Insetkrag op die kleiner suier word deur die vloeistof in alle rigtings voortgeplant en lewer ’n uitsetkrag op die groter suier. Omdat die druk in alle rigtings in die vloeistof voortgeplant word, kan die groter suier meer werk verrig vanweë sy groter oppervlak. Alle hidrouliese stelsels werk volgens hierdie beginsel.

  • Die werking van ’n hidrouliese stelsel kan ook met behulp van ’n spuit voorgestel word.
  • Die suier waarop die druk toegepas word , word die meester of insetspuit genoem en die spuit wat die uitwerking ondervind, word die bediener of uitsetspuit genoem.

Beskryf in jou eie woorde hoe ’n hidrouliese stelsel werk. Noem ook twee voorbeelde van hidrouliese stelsels wat algemeen gebruik word.

AKTIWITEIT 2:

Om die verspreiding van druk in ’n hidrouliese stelsel te ondersoek en te beskryf

[LU 1.3, 2.3]

  • Jy het die volgende items vir hierdie ondersoek nodig:
  • 2 x 10 mℓ-plastiekspuite genommer A en B
  • 1 x plastiekbuis
  • Vul die stelsel met water.
  • Maak die plastiekbuisie aan albei kante nat en heg dit aan die spuite soos in die illustrasie aangedui.

1. Druk die suier van silinder A, 2 cm in. Noteer jou waarneming van die afstandlewering by silinder B.

2. Druk die suier van silinder B, 2 cm in. Noteer jou waarneming van die afstandlewering by spuit A.

3. Is daar enige meganiese voordeel waargeneem?

4. Samevatting: Die verspreiding van druk in ’n hidrouliese stelsel.

AKTIWITEIT 3:

Om die werking van ’n pneumatiese stelsel te ondersoek en met dié van ’n hidrouliese stelsel te vergelyk

[LU 1.3, 2.3]

  • Maak plastiekspuite A en B droog en herhaal die ondersoek in aktiwiteit 2, maar trek lug in plaas van water in die silinder in.

1. Watter ooreenkoms is daar tussen hidrouliese en pneumatiese stelsels?

2. Watter verskil is daar tussen die stelsels ten opsigte van die effektiewe voortplanting van die druk?

AKTIWITEIT 4:

Om die uitwerking van die deursnee van die suierskyf op afstand- en kraglewering te ondersoek en te bespreek

[LU 1.3, 2.3]

Jy benodig die volgende items vir hierdie ondersoek:

  • 1 x 10 mℓ-silinder genommer A
  • 1 x 20 mℓ-silinder genommer C
  • ’n buisie
  • Verbind die silinders soos in die figuur aangedui en vul die stelsel met water.

1. Druk die suier van silinder A, 2 cm in. Noteer jou waarneming van die afstandlewering by silinder C.

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
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Cied
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Smarajit Reply
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Source:  OpenStax, Tegnologie graad 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11070/1.1
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