Formation hydraulique : Explication simple, comprise de tous. Support sur clef USBFormation hydraulique :...

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Formation hydraulique "les bases" vol 1&2

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La procédure de contrôle, réglage et dépannage est décrite à l'aide d'un schéma de mini-pelle 1.6T....

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1- Load

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Formation individuelle en direct, flexible adaptée à votre niveau. ...

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A simple acting cylinder filled with oil is in a static position. A load of one ton is placed on the rod, the piston has a surface of 10 cm2.

A pipe is clogged with a manometer at its end.

There is a pressure of 100 bars on the manometers. This pressure applies at all points of the circuit perpendicular to all surfaces. (Pascal's theorem).

The pressure is determined by the load in relation to the application surface according to the formula :

P= F/S

P : pressure in bar.

F : force or load in daN or Kg.

S : area in cm2.

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2- The addition of oil

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Formation hydraulique: Explication simple comprise de tous. Retrouver les cours associés aux...

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Formation hydraulique de base niveau 1 complète en vidéo webcam enregistrée sur...

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A 200 liter tank is filled with oil using a hand pump (item 1). The valve (item 3) is closed after filling the tank. An anti-return valve (item 2) ensures the tightness of the circuit. A manometer is installed at the top of the tank.

It is found that to increase the pressure from 0 to 300 bar it is necessary to add oil with the pump. The oil is compressible, it is necessary to add 6 liters of additional oil.

∆v = ∆p * Vi / 10000

∆v: difference in volume.

∆p: pressure difference.

VI : initial volume.

10000 : oil compressibility coefficient (46 cSt) (varies depending on the oil).

Hydraulic training : The basics Vol 1

Véritable formation hydraulique : explications simples, comprises de tous. Véritable...

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3- Temperature

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A 200 liter tank is filled with oil using a hand pump (item 1). The valve (item 3) is closed after filling the tank. A no-return valve (item 2) ensures the tightness of the circuit. A manometer is installed at the top of the tank.

The tank is subjected to a temperature rise of 20 ° to 60 °.

It is found that the volume of oil in the tank increases (+6 liters), which causes an increase in pressure from 0 to 300 bar.

∆v = ∆T * Vi *0.00075

∆v : difference in volume.

∆T : temperature difference.

VI : initial volume.

0.00075 : coefficient of expansion of the oil (46 cSt) (varies according to the oil).

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