Patent ID: 11859631
Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KG
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. The rotor structure of claim 1, further comprising a second stub shaft fixed to a second end of the tie bolt, the second end being axially opposite to the first end of the tie bolt;
a second venting/sealing arrangement comprising:
a further plurality of axially spaced apart annular seals arranged about a segment of the tie bolt in correspondence with a radially-inward segment of the second stub shaft, wherein each respective neighboring seal pair of the further plurality of axially spaced apart annular seals defines sealing sides of a respective chamber of a further plurality of axially sequential chambers disposed between the process side and the atmospheric pressure side of the turbomachine; and
a further plurality of conduits extending from a radially-outward segment of the second stub shaft through the second stub shaft to communicate with the further plurality of axially sequential chambers disposed between the process side and the atmospheric pressure side of the turbomachine, the further plurality of conduits alternating between a first conduit fluidly coupled at the radially-outward segment of the second stub shaft to receive further sealing fluid and a second conduit fluidly connected at the radially-outward segment of the second stub shaft for venting,
wherein, in response to flow of a further incipient leakage of the process fluid through one or more of the further plurality of axially spaced apart annular seals, a first fluid flow is established through the first conduit of the further plurality of conduits to convey the further sealing fluid into the respective chamber of the further plurality of axially sequential chambers in communication with the first conduit, and a second fluid flow is established through the second conduit of the further plurality of conduits connected to permit venting of the respective chamber in communication with the second conduit.