Tool and method for frontal unscrewing of a link nut in a twin-spool turbine

The present invention relates to a method for unscrewing the link nut of the HP rotor of a twin-spool turbine, comprising a front fan, an intermediate casing (7), a HP module with a HP rotor and a LP turbine module, the intermediate casing having a support bearing for the HP rotor, said rotor being...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MANCHON ROLAND, BERTIN MICHEL, DAGRON HERVE, MUSTIERE CEDRIC, COUTURE JEAN-MICHEL, TAILPIED FABRICE
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HAND TOOLS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MANIPULATORS MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS STEAM ENGINES TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a method for unscrewing the link nut of the HP rotor of a twin-spool turbine, comprising a front fan, an intermediate casing (7), a HP module with a HP rotor and a LP turbine module, the intermediate casing having a support bearing for the HP rotor, said rotor being retained in the bearing by the link nut, the method comprising a step of placing an unscrewing tool in front of the link nut after having removed the fan and released access to the nut from the front, the method being characterised in that, with the rotation of the HP rotor locked and the frontal unscrewing tool including a socket spanner (320) provided with teeth having a shape that complements that of the teeth of the link nut, a mounting (310) for the socket spanner (320) is attached to the intermediate casing, the socket spanner (320) is rotatably mounted on the mounting, and an unscrewing torque is applied to said socket spanner (320). The invention also relates to the unscrewing tool for implementing the method of the invention.