Insulating-liquid immersed electrical machine.

摘要

An insulating liquid immersed electrical machine comprises a hermetically sealed tank (1) containing the electrical machine (4) and insulating liquid (5) arranged between the electrical machine (4) and the tank (1). The tank (1) includes deformable means (72) through which gas and liquid cannot pass and whose shape is variable so that the volume receiving the insulating liquid (5) between the tank (1) and the electrical machine (4) is variable. The insulating liquid (5) completely fills the receiving volume in the tank (1). Pressurizing means (7, 73) are provided for adjusting the shape of the deformable means (72) so that the pressure of the insulating liquid (5) in the tank (1) is kept at a suitable degree for preventing the insulating liquid (5) from vaporizing.