COOLING RETAINING RING ASSEMBLY OF TURBINE FOR GAS TURBINE PLANT (VERSIONS) Russian patent published in 2017 - IPC F01D11/08 F01D5/18 F01D25/12 

FIELD: machine engineering.

SUBSTANCE: cooling retaining ring assembly of a gas turbine plant contains outer and inner retaining elements. The outer retaining element is located within the turbine section of the gas turbine plant near the turbine section body and has at least one air conduit for cooling fluid introduction into this element. The inner retaining element is located in the inner radial direction with respect to the outer retaining element and is rigidly connected thereto. The inner retaining element has micro channels extending circumferentially or axially, or both, to cool the inner retaining element with cooling fluid from at least one air duct. In the outer retaining element or in the inner retaining element or both, micro channel inlet openings are provided to guide the cooling fluid from the outer retaining element to the microchannels and coating. The coating is located near the inner surface of the inner retaining element and is intended for hermetic closure of the micro channels to protect them from the hot gas path of the gas turbine plant.

EFFECT: Improved cooling efficiency and longer service life.

20 cl, 7 dwg