Air-cooled air-to-air bushing
AssigneeHitachi Energy Ltd
InventorsDan Gustavsson, Simon Lindgren, Jan Kogner, Richard Natz, Zoltan Repasi, Thomas Eriksson
Life of this patent
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Abstract
The present disclosure relates to an air-to-air through-wall bushing including a conductor, insulation surrounding the conductor, a ventilation inlet at a first end of the bushing, and a ventilation outlet at a second end of the bushing. The bushing is arranged through a wall and a pressure difference between a first pressure on a first side of the wall and a second pressure on a second side of the wall is provided The inlet and outlet allow cooling air to pass through a ventilation channel within the bushing driven by the provided pressure difference.
Claims20
An air-to-air through-wall bushing comprising:
- a conductor;
- insulation surrounding the conductor;
- a ventilation inlet at a first end of the bushing;
- a ventilation outlet at a second end of the bushing;
- and
- a ventilation channel extending between the ventilation inlet and the ventilation outlet;
- the bushing arranged through a wall,
- a pressure difference between a first pressure on a first side of the wall and a second pressure on a second side of the wall being provided, and
- said ventilation channel configured to allow cooling air to pass into the ventilation inlet, through a ventilation channel within the bushing, and out of the ventilation outlet, driven by the provided pressure difference.
A method of providing an air flow through a ventilation channel within an air-to-air through-wall bushing, the bushing being arranged through a wall and comprising:
- a conductor;
- insulation surrounding the conductor;
- a ventilation inlet at a first end of the bushing;
- and
- a ventilation outlet at a second end of the bushing;
- the method comprising:
- providing a pressure difference between a first pressure on a first side of the wall and a second pressure on a second side of the wall;
- and
- allowing ambient air to pass through the ventilation channel within the bushing, from the ventilation inlet to the ventilation outlet, driven by the provided pressure difference.
A hall arrangement comprising:
- a hall including a wall having a first side with a first pressure and a second side with a second pressure different from the first pressure to provide a pressure difference;
- and
- an air-to-air through-wall bushing arranged through the wall, the bushing comprising:
- a conductor;
- insulation surrounding the conductor;
- a ventilation inlet at a first end of the bushing;
- a ventilation outlet at a second end of the bushing;
- and
- a ventilation channel extending between the ventilation inlet and the ventilation outlet;
- said ventilation channel configured to allow cooling air to pass into the ventilation inlet, through a ventilation channel within the bushing, and out of the ventilation outlet, driven by the provided pressure difference.
Dependencies are inferred from the claim text.