Compensating device suitable for use in railway car transformers
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United States of America Patent
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Apr 15, 2003
Grant Date -
N/A
app pub date -
Mar 29, 2001
filing date -
Oct 14, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compensating device suitable for use in railway car transformers has at least one compensation receptacle in fluid communication connection with the interior of the housing of a transformer and having a fluid volume. A separating element limits the fluid volume in the compensation receptacle. When a change occurs in the fluid volume in the compensation receptacle, the separating element is subject to a change in position. The separating element is designed in the form of a roll-over membrane. The circumferential edge of the membrane is connected to the side walls of the compensation receptacle at a distance form the bottom of the receptacle in a sealing manner. The connection is such that the roll-over membrane, in its rolled-up state, has a position in which it allows for the largest amount of fluid volume by substantially extending in one plane at a distance form the bottom. The membrane can be rolled-out from this position so as to approach the side walls and bottom in the compensation receptacle, reducing the fluid volume.
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