Transformer tank for a shell type transformer, shell type transformer and method for clamping a magnetic core of a shell type transformer

A clamping arrangement for exerting a clamping force on a magnetic core of a shell type transformer, the clamping arrangement comprising:

• a beam that is fixable to an interior wall of the transformer;
• a plunger sleeve arranged inside the beam, the plunger sleeve comprising a thread;
• a plunger arranged inside the plunger sleeve, the plunger comprising a first end to exert the clamping force on the magnetic core, the plunger being movable with respect to the beam and the plunger sleeve along a longitudinal axis, and a value of the clamping force being adjustable based on a position of the plunger with respect to the beam;
• and
• a screw device comprising a screw arranged at a first end of the plunger sleeve in contact with a second end of the plunger to move the plunger along its longitudinal axis, and
• the screw being turnable in the thread of the plunger sleeve to move with respect to the plunger sleeve along the longitudinal axis and to set a part of the screw that protrudes the sleeve interior.