Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Christian Kirchner

Kevin Miny

Marcus Meyer

David J Peer

Mark J Kuzdzal

Martin Reimann

A compressor rotor for turbomachinery, such as a centrifugal compressor, is provided. Disclosed embodiments include a tie bolt and a rotor shaft that cooperates with the tie bolt to define a chamber therebetween. A seal assembly is positioned to separate the chamber from a first space and a leak detector in fluid communication with the first space and operable to generate a signal indicative of leakage of a fluid from the chamber to the first space.

In a turbomachine, rotor structure with seal assembly and method in connection with same

A gas seal, in particular dry gas seal, which extends in a circumferential direction with respect to an axis, has a rotating slide ring and a stationary slide ring, wherein the stationary slide ring is axially movable. The gas seal has a slide sleeve and a pressure element which bears against the stationary slide ring at a first contact surface by a second contact surface, wherein, by the pressure element, an elastic element axially presses the stationary slide ring by way of the sealing surface of the latter against the rotating slide ring. The seal is arranged at least partially with a fastening portion between the two portions. The first portion is metal, the second portion is ceramic, and the slide sleeve is ceramic.

Gas seal

A gas seal which extends in a circumferential direction in an axis has a rotating slip ring and an axially movable stationary slip ring. A slip sleeve guides the stationary slip ring in the axial movement direction by a first sliding face on a second sliding face. The slip sleeve is fastened to a stator of the gas seal, wherein the slip sleeve has a first recess extending in the circumferential direction, and the stator has a second recess, opposite the first recess in the region of the fastening, extending in the circumferential direction, such that the first recess and the second recess define a common cavity extending in the circumferential direction. In the cavity there is an elongate fixing element which at least partially fills the first recess and the second recess such that an unlimited axial relative movement is only possible when the fixing element is radially deformed.

A shaft seal arrangement with a shaft extending along an axis and with a stator, wherein a rotating sealing ring is arranged on the shaft and a static sealing ring is arranged on the stator, wherein the rotating sealing ring has a rotating sealing surface and the stationary sealing ring has a stationary sealing surface, wherein these sealing surfaces are arranged in such a way that they are located opposite one another in a sealing manner in a substantially radial sealing plane, wherein the shaft seal arrangement forms a contactless gas seal, wherein at least one of the sealing surfaces has a nonrotationally symmetrical surface contouring the rotating sealing ring is provided.

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Rheinberg, Germany

Christian Kirchner