Alstom Technology Limited

Anton Sumin

Alexander Anatolievich Khanin

Sergey Vorontsov

Edouard Sloutski

Valery Kostege

An axial flow gas turbine () includes a rotor () and a stator, and a hot gas path through which hot gas passes. The rotor () includes a rotor shaft () with axial slots for receiving a plurality of blades (B-B) arranged in a series of blade rows, with rotor heat shields (R, R) interposed between adjacent blade rows. The rotor shaft () is configured to axially conduct a main flow of cooling air along the rotor heat shields (R, R) and the lower parts of the blades (B-B), and the rotor shaft () supplies the interior of the blades (B-B) with cooling air (). Stable and predictable cooling air parameters at any blade row inlet are secured by providing air-tight cooling channels (), which extend axially through the rotor shaft () separate from the main flow of cooling air (), and supply the blades (B-B) with cooling air ().

Axial flow gas turbine

A stator heat shield () for a gas turbine () includes an outside () which in the installed state faces a hot gas path () of the gas turbine (), and an inside () facing away from the outside (). A plurality of ribs () are formed on the inside () and extend axially in the installed state with regard to an axis of rotation () of a rotor () of the gas turbine () and, in the circumferential direction, are spaced a distance apart from one another. At least one baffle plate () is arranged on the inside () and is in contact with the ribs (). At least one groove () is designed in an end face () bordering the stator heat shield () in the circumferential direction, into which at least one sealing element () can be inserted. A plurality of bores () are included, each opening at a distance from the groove () in the direction of the outside () at the inside () at one end and on the end face () at the other end and arranged a distance apart from one another in the axial direction.

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Moscow, Russia

Anton Sumin