GAS TURBINE COMBUSTOR AND GAS TURBINE ENGINE HAVING THE SAME

To prevent the combustion vibration from occurring while maintaining main burner symmetry.SOLUTION: A gas turbine combustor comprises: a pilot burner disposed in the center part of a combustion cylinder; and a plurality of main burners disposed so as to surround around the pilot burner. The pilot bu...

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Bibliographic Details
Main Authors SAITO KEISHIRO, ISONO MITSUNORI, HOSAKA SHUHEI
Format Patent
LanguageEnglish
Japanese
Published 03.10.2019
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Summary:To prevent the combustion vibration from occurring while maintaining main burner symmetry.SOLUTION: A gas turbine combustor comprises: a pilot burner disposed in the center part of a combustion cylinder; and a plurality of main burners disposed so as to surround around the pilot burner. The pilot burner includes: a pilot nozzle disposed in the center part of the combustion cylinder; and a plot cone having a conical part formed from the vicinity of the downstream side end part of the pilot nozzle to expand downstream, and an annular flange part extending from the downstream side opening end toward radial outside. The flange part includes: a first position in the circumferential direction; and a second position which is different from the first position in the circumferential direction, and the radial width is different from the first position.SELECTED DRAWING: Figure 2 【課題】メインバーナの対称性を維持したまま燃焼振動の発生を防止する。【解決手段】ガスタービン燃焼器は、燃焼筒の中心部に配置されたパイロットバーナと、該パイロットバーナの周囲を取り囲むように配置された複数のメインバーナと、を備える。パイロットバーナは、燃焼筒の中心部に配置されたパイロットノズルと、該パイロットノズルの下流側端部の周囲から下流に向けて拡開するように形成された円錐部及び該円錐部の下流側開口端から径方向の外側に向けて延在する環状の鍔部を含むパイロットコーンと、を含む。鍔部は、周方向における第1位置と、該第1位置とは周方向における位置が異なる第2位置であって第1位置とは径方向の幅が異なる第2位置と、を含む。【選択図】図2
Bibliography:Application Number: JP20180058232