A transformer tank for a shell type transformer, shell type transformer and method for clamping a magnetic core of a shell type transformer
AssigneeHitachi Energy Switzerland AG
InventorMiguel Aguirre
Life of this patent
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Abstract
A transformer tank for a shell type transformer includes a wall, the wall surrounding a tank interior, a clamping arrangement for exerting a clamping force on a magnetic core of the shell type transformer. The clamping arrangement includes a beam fixed on the wall, and a plunger, the plunger including a first axial end configured to exert the clamping force on the magnetic core. The plunger is movable with respect to the beam along its longitudinal axis and a value of the clamping force is settable depending on the position of the plunger relative to the beam.
Claims10
A transformer tank for a shell type transformer (100), comprising:
- a wall (111), the wall (111) surrounding a tank interior (112),
- a clamping arrangement (120) for exerting a clamping force (121) on a magnetic core (101) of the shell type transformer (100),
- wherein the clamping arrangement (120) comprises:
- a beam (122) fixed on the wall (111),
- a plunger (123), the plunger (123) comprising a first axial end (124) configured to exert the clamping force (121) on the magnetic core (101), wherein the plunger (123) is movable with respect to the beam (122) along its longitudinal axis (126) and a value of the clamping force (121) is settable depending on the position of the plunger (123) relative to the beam (122),
- a screw device (128), the screw device (128) being contact with a second axial end (125) of the plunger (123) for moving the plunger (123) along its longitudinal axis (126).
A method for clamping a magnetic core (101) of a shell type transformer (100), comprising:
- turning a screw (129) for moving a plunger (123) along its longitudinal axis (126) with respect to a wall (111) of a transformer tank (110), wherein the screw (129) is in contact with an axial end (125) of the plunger (123), thereby
- exerting clamping force (121) on a magnetic core (101) of the transformer (100), and
- setting the clamping force (121) to a preset value by turning the screw (126) with a value of a torque corresponding to the preset value of the clamping force (121).
Dependencies are inferred from the claim text.