| 摘要 |
The present invention relates to a device for transferring a fluid from a stationary (20) to a rotating machine part (3) by means of a rotary joint (1), which optionally comprises flat radial, conical or cylindrical transition surfaces, wherein an at least partially tubular connecting rod (2) rotating with the rotating machine part (3) is provided thereon for the purpose of conveying the fluid, which rod (2) extends into the area of the rotary joint (1) and which is axially displaceable with respect to the rotary joint (1). To provide a device with the above-mentioned features, in which a change in the volume of the central feed pipe during a chucking or releasing movement of the connecting rod, which consists of the central feed pipe or contains the latter, is prevented, it is proposed according to the invention that the rotating transition surface of the rotary joint (1) be associated with a media delivery pipe (30) which is disposed with radial play coaxially with respect to the connecting rod (2) of the rotating machine part (3) and overlaps the latter in the axial direction by an amount which is greater than the maximum axial displacement of the rotating connecting rod (2) which occurs during use of the device relative to the co-rotating media delivery pipe (30).
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