Thereby, it is possible to move the labyrinth packing 8 toward the center of the rotary axis under an action of the bimetal 9 in case of operating of the turbine and a leakage of steam is restricted.FUKAZAWA MIHARUKAWAI MITSUOWATANABE OSAMU...
A minimum-leakage seal that offers resistance to fluid flow while providing radial or axial clearance; a labyrinth of circumferential knives or touch points provides for successive expansion of the fluid being piped; used for gas pipes, steam engines, and turbines. ...
of the stage of the turbine immediately upstream from the seal. On turbines with double flow first stages, for example, it is known that the turbine stage that supplies steam to the end packing seals produces a forward running whirl (i.e., in the direction of shaft rotation) at high ...
Among my experimental researches on the labyrinth packing of the straight-through type, the following two itemes are reported in this paper. (1) On the effect of the "Sub-Fin"-It is expected that leakage loso through a labyrinth packing would be reduced when the small sub-fins are put in...
or steam. During turbine operation, a portion of the working fluid flows through a turbine along a main flow path that is defined by stationary and rotating parts that include aerodynamic vanes and blades for extracting power. Another portion of the working fluid may follow a secondary flow path...
Thereby, it is made possible to move the labyrinth packing 8 toward the center of the rotary shaft under the actions of bimetals 9 and 10 in case of operating of the turbine and to restrict a leakage of the steam.FUKAZAWA MIHARUKAWAI MITSUO...
fluid from leaking by a structure wherein packing fins to form restricted and enlarged sections in the leakage passage of turbine working fluid are made with bimetal, which deforms in the direction to narrow the leakage passage under high temperature environment during the operation of a turbine....
PURPOSE:To reduce a leakage of steam by a labyrinth packing to be arranged in a clearance between a steam turbine rotor and a casing by a method wherein the packing is supported in the casing through a returning bimetal and a supporting spring. CONSTITUTION:A rotor 6 of a steam turbine ...
PURPOSE:To reduce the leakage of turbine working fluid, enhance the turbine efficiency and enable to protect a turbine rotor or the like from being damaged by a structure wherein packing fins made of an alloy containing the respective specified weight percentages of Mn, Cu and Ni. CONSTITUTION:...
sealing of steam with a simple structure and sure packing action by sinking springs in the spaces formed by stepped parts so as to increase sureness of sealing between the bottom side of the top part of a packing segment and the jaw of a packing case as a load on a turbine increases. ...