Hole arrangement of liners of a combustion chamber of a gas turbine engine with low combustion dynamics and emissions

Abstract

A gas turbine combustion chamber with an inner housing and an outer housing the inner housing having an inner wall element with a first hole arrangement and a second hole arrangement is provided. The inner wall element envelopes a burner volume. The first hole arrangement has first holes arranged in a first areal density, the second hole arrangement has second holes arranged in a second areal density. The outer housing has an outer wall element with a further first hole arrangement and a further second hole arrangement. The outer wall element of the outer housing envelops the inner wall element of the inner housing so that a gap in between is formed. The further first hole arrangement has further first holes arranged in a further first areal density, the further second hole arrangement has further second holes arranged in a further second areal density.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the US National Stage of International Application No. PCT / EP2012 / 074459 filed Dec. 5, 2012, and claims the benefit thereof. The International Application claims the benefit of European Application No. EP 12161509 filed Mar. 27, 2012. All of the applications are incorporated by reference herein in their entirety.FIELD OF INVENTION[0002]The present invention relates to a housing for a combustion chamber for a gas turbine and to a method for producing a combustion chamber of a gas turbine.ART BACKGROUND[0003]In a field of gas turbine technology it is an aim to reduce the production of environmental pollutants such as various oxides of nitrogen (NOx), carbon monoxide (CO) and unburned hydrocarbons (UHC). Therefore, it is an aim to achieve a reliable and stable lean-burn combustion process in a combustion chamber of a gas turbine.[0004]In order to provide a lean-burn combustion process more air is directed in particular cl...

AI Technical Summary

Benefits of technology

This patent describes a method for designing a combustion chamber for a gas turbine that reduces combustion instabilities and emissions. By arranging and distributing holes in a non-uniform manner, the combustion chamber operates at lower nitrogen emissions and increased efficiency. The method also reduces combustion dynamics, leading to a longer lifespan for the combustion chamber and turbine components. Overall, this patent provides an effective and efficient solution for reducing emissions and improving performance of gas turbines.

Problems solved by technology

However, directing more air flow through the front end, the combustion chamber promotes combustion instabilities which is an inherent problem associated with the lean-burn combustion.

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