Patent · US Active

Axial seal in a casing structure for a fluid flow machine

US9605551B2 · kind B2 · utility

2Cited by

7References

12Claims

0Family size

Assignee

MTU Aero Engines AG · DE

Inventors

Manfred Feldmann · Eichenau, DE
Janine Sangl · Dachau, DE
Sebastian Kaltenbach · Munich, DE
Joachim Lorenz · Bensheim, DE

Key dates

Filing date	Oct 8, 2013
Grant date	Mar 28, 2017
Priority date	—
Expiry date	Jul 4, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01D25/246
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A casing structure for a fluid flow machine, in particular for a gas turbine or an aircraft engine, including an outer casing wall and an inner casing wall, which annularly surround a flow channel of the fluid flow machine and are spaced apart in a radial direction with respect to the flow channel. At least one cavity is formed between the inner and outer casing walls. The cavity is axially divided into at least two regions which are separated from each other by an axial seal in such a way that different pressure conditions are created according to the axial position of these regions, which different pressure conditions correspond to the pressure conditions in the flow channel. A corresponding fluid flow machine such as, for example, an aircraft engine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.