Jacking Oil System

Samuël Buysschaert Sep 6, 2021:

Si ça peut aider un complément TECHNICAL SPECIFICATION FOR JACKING OIL PUMP SET
https://npcil.etenders.in/tender_document/tender_5456/tech_c...

Jean-Paul ROSETO (asker) Sep 6, 2021:

Jacking Oil Supply c'est alors l'alimentation du dispositif de virage lent de la turbine à gaz?

Jean-Paul ROSETO (asker) Sep 6, 2021:

je comprends

florence metzger Sep 6, 2021:

non dans votre cas Jacking Oil System c'est le dispositif de virage lent de la turbine à gaz. c'est un système hydraulique.

Jean-Paul ROSETO (asker) Sep 6, 2021:

alors "jacking oil system" serait "un système de graissage/lubrification secondaire/supplémentaire", puisqu'il vient seconder. Peut on traduire ainsi ?

When a turbine-generator shaft is rotating very slowly, the normal lubricating oil supply cannot ensure that a hydrodynamic oil wedge will be maintained. Also, additional lubrication measures are required to prevent bearing damage and to minimise breakaway torque when starting a turbine-generator from standstill.



In both circumstances the jacking oil system provides high pressure oil to the base of the bearing and floats the rotors on a film of oil. Until the turbine shaft speed is capable of sustaining an adequate bearing oil wedge (above 200 r/min), the jacking oil system and the normal lubricating oil system are run in parallel.

Samuël Buysschaert Sep 6, 2021:

Une suggestion,

Contexte,
Jacking Oil System
https://mda139.net/turbineplant/jacking-oil-systems.html

C'est une sorte de "Système de lubrification par circulation d'huile"

Oil Jacking Pump, 11.1.1.2 Turbine Jacking Oil System (Fig. 3.45)
https://www.sciencedirect.com/topics/engineering/oil-jacking...

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TUTORIAL ON LARGE STEAM TURBINE SYSTEMS IN OIL & GAS APPLICATIONS
Oil System (p.16), Jacking Oil (p.17), Barring System (p.20)
https://oaktrust.library.tamu.edu/bitstream/handle/1969.1/16...

Jacking Oil System Alstom
(p.5, p.11 à 15)
https://docshare02.docshare.tips/files/25435/254354754.pdf

https://www.cjc.dk/fr/solutions-systeme/production-electriqu...
https://www.cjc.dk/fr/solutions-systeme/production-electriqu...

Jean-Paul ROSETO (asker) Sep 6, 2021:

The jacking oil system must always operate when the rotor is at low speed to prevent metal to metal contact, that is during:
• Start-up of the gas turbine.
• Shut down of the gas turbine.
• Hydraulic rotor barring operation.
• Offline compressor cleaning of the gas turbine.
• Forced cooling of the gas turbine.
• Rotor turning with Static Starting Device (SSD), e.g. motor roll during plant commissioning.

florence metzger Sep 6, 2021:

il faudrait connaitre le contexte car il me semble que sur les navires on parlait de jacking oil system pour le serrage/desserrage des écrous hydrauliques des culasses

Jean-Paul ROSETO (asker) Sep 6, 2021:

pompe à huile mise sur vérin

Jean-Paul ROSETO (asker) Sep 6, 2021:

système à huile mis sur vérin

Jean-Paul ROSETO (asker) Sep 6, 2021:

The jacking oil system consists of 2 x 100% high pressure piston pumps.