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Reheat burner arrangement

A technology of burners and combustion chambers, applied in jet propulsion devices, gas turbine devices, combustion chambers, etc., can solve problems such as difficult mixing in the circumferential direction, and achieve the effect of rapid mixing

Active Publication Date: 2014-05-07
ANSALDO ENERGIA SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This creates difficulties in achieving circumferential mixing

Method used

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  • Reheat burner arrangement
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Examples

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Embodiment Construction

[0072] figure 1 A reheat burner arrangement 100 incorporating a center body 101 is shown. The centerbody shown begins upstream of the injection plane 102 , causing fuel 103 and carrier air 104 to be injected into the annular duct 105 , and then the centerbody continues downstream to the outlet 106 of the burner arrangement 100 . The central body 101 is actively connected to the main flow 107 of hot gas. Center body 101 provides better mixing and matching of burners and burner zones. With regard to the premix burner according to the invention, the central body 101 may be provided with a fuel supply line (not shown). The central body 101 is at its end 108 in the flow direction of the main flow 107 with respect to the cross-sectional area between the annular duct 105 and the subsequent combustion chamber (see figure 2 , item 109) presenting a cylindrical or quasi-cylindrical end (see also figure 2 ). A full, partial or intermediate conical profile of the surface of the cen...

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PUM

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Abstract

Reheat burner arrangement comprising a center body, an annular duct with a cross-section area, an intermediate fuel injection plane located along the center body and being actively connected to the cross section area of the annular duct, wherein the center body is located upstream of a combustion chamber, wherein the structure of the reheat burner arrangement is defined by various parameters and the structure of the reheat burner arrangement is defined by various dependencies.

Description

technical field [0001] The present invention relates to burners for premixing applications in gas turbines. In particular, it concerns burners for combustion chambers in the reheat process. Furthermore, it relates to the method of operation of such a burner. Background technique [0002] To achieve high efficiency, high turbine inlet temperatures are required in standard gas turbines. As a result, high NO x emission levels. These emissions can be mitigated using sequential combustion. The main flow passes through the first combustion chamber (e.g. using a burner of the general type as disclosed in EP 1257809 or in US 4932861, which is also called an EV burner, where EV stands for ambient), where part of the fuel is combustion. The remaining fuel is added and burned (for example using a burner of the type disclosed in US 5431018 or US 5626017 or in US 2002 / 0187448, which is also called an SEV burner, where S stands for two stages). Both burners include premix burners b...

Claims

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Application Information

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IPC IPC(8): F23R3/28F23R3/42
CPCF23R3/346F23R3/20F23R3/12F02C7/00F23R3/16F23R3/42F02C6/02F02C6/003F05D2250/12F23R3/34F23R3/18F23R2900/03341F05D2250/13
Inventor J.P.伍德A.西亚尼A.特尤尔D.A.彭內尔E.弗雷塔格
Owner ANSALDO ENERGIA SWITZERLAND AG
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