WO2026057340 - PILOT BURNER HAVING PREMIXING ARRANGEMENT IN GAS TURBINE TO PREMIX AIR AND FUEL AT TWO DISTINCT PREMIXING LOCATIONS
National phase entry is expected:
Publication Number
WO/2026/057340
Publication Date
19.03.2026
International Application No.
PCT/EP2025/074427
International Filing Date
27.08.2025
Title **
[English]
PILOT BURNER HAVING PREMIXING ARRANGEMENT IN GAS TURBINE TO PREMIX AIR AND FUEL AT TWO DISTINCT PREMIXING LOCATIONS
[French]
BRÛLEUR PILOTE PRÉSENTANT UN AGENCEMENT DE PRÉMÉLANGE DANS UNE TURBINE À GAZ POUR PRÉMÉLANGER DE L'AIR ET DU COMBUSTIBLE À DEUX EMPLACEMENTS DE PRÉMÉLANGE DISTINCTS
Applicants **
SIEMENS ENERGY GLOBAL GMBH & CO. KG
Inventors
KUMAR SADASIVUNI, Suresh
LIU, Kexin
SINGH, Sundram
Priority Data
2413575.8
16.09.2024
GB
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1909 | |
| EPO | Filing, Examination, Granting | 8126 | |
| Japan | Filing, Examination, Granting | 2031 | |
| South Korea | Filing, Examination, Granting | 1819 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,625
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Abstract[English]
A burner for a gas turbine engine featuring a pilot burner (104) having a premixing arrangement (306) to concurrently premix air and fuel at two distinct premixing locations is provided. The premixing arrangement includes a first premixing passageway (108) and further includes a second premixing passageway (110). The outlet of the first premixing passageway is disposed at a first radial position (R1) to eject a mixture of the fuel and air into a first pilot combustion zone, and the outlet of the second premixing passageway is disposed at a second radial position (R2) to eject a mixture of the fuel and air into a second pilot combustion zone. This arrangement is effective to inhibit overlap of pilot flames formed in the first pilot combustion zone with pilot flames formed in the second pilot combustion zone. The premixing arrangement is further effective to inhibit flashback in gas turbine engines that use hydrogen fuel.[French]
L'invention concerne un brûleur pour un moteur à turbine à gaz comprenant un brûleur pilote (104) présentant un agencement de prémélange (306) pour prémélanger simultanément de l'air et du combustible à deux emplacements de prémélange distincts. L'agencement de prémélange comprend un premier passage de prémélange (108) et comprend en outre un second passage de prémélange (110). La sortie du premier passage de prémélange est disposée à une première position radiale (R1) pour éjecter un mélange du combustible et de l'air dans une première zone de combustion pilote, et la sortie du second passage de prémélange est disposée à une seconde position radiale (R2) pour éjecter un mélange du combustible et de l'air dans une seconde zone de combustion pilote. Cet agencement est efficace pour empêcher le chevauchement de flammes pilotes formées dans la première zone de combustion pilote avec des flammes pilotes formées dans la seconde zone de combustion pilote. L'agencement de prémélange est en outre efficace pour empêcher un retour de flamme dans des moteurs à turbine à gaz qui utilisent de l'hydrogène combustible.