DEVICE, IN PARTICULAR TURBOMACHINE, CONTAINING STRUCTURE FOR SEALING SHAFT Russian patent published in 2021 - IPC F16J15/43 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to a device (AR), in particular a turbomachine (TM), containing: a shaft (SH) continuing along the axis (X), a device (SHS) for sealing the shaft, for sealing the annular gap GP between the shaft (SH) and the stator (STT) from the space (PFC) for the technological working fluid to the external environment (AMB), and the device (SHS) for sealing the shaft has a magnetofluidic seal (FFS) of the shaft, moreover, on the side of the space (PFC) for the technological working fluid, the shaft sealing device contains an additional shaft seal (SHS 1) next to the magnetofluidic seal (FFS) of the shaft, and the magnetofluidic seal (FFS) of the shaft is located in the annular gap (GP) in the axial direction between the first shaft seal and the external environment (AMB); moreover, in the annular gap (GP) between the additional seal (SHS 1) of the shaft and the magnetofluidic seal (FFS) of the shaft in the axial direction, pressure removal (SUC) is provided.

EFFECT: shaft sealing device for a turbomachine is created that has a small leak, preferably almost no leaks at all, and at the same time with relatively low operating costs.

7 cl, 3 dwg