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1. WO2018133292 - NOZZLE WITH ADJUSTABLE INNER AND OUTER FLOW CHANNEL EQUIVALENCE RATIOS, NOZZLE ARRAY, AND BURNER

Publication Number WO/2018/133292
Publication Date 26.07.2018
International Application No. PCT/CN2017/087611
International Filing Date 08.06.2017
IPC
F23R 3/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
02characterised by the air-flow or gas-flow configuration
04Air inlet arrangements
10for primary air
12inducing a vortex
CPC
F23D 14/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
14Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
20Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
22with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
24at least one of the fluids being submitted to a swirling motion
F23D 14/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
14Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
26with provision for a retention flame
F23D 14/58
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
14Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
46Details ; , e.g. noise reduction means
48Nozzles
58characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
F23D 14/62
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
14Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
46Details ; , e.g. noise reduction means
62Mixing devices; Mixing tubes
F23D 14/70
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
14Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
46Details ; , e.g. noise reduction means
70Baffles or like flow-disturbing devices
F23D 2203/007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
2203Gaseous fuel burners
007Mixing tubes, air supply regulation
Applicants
  • 中国科学院工程热物理研究所 INSTITUTE OF ENGINEERING THERMOPHYSICS, CHINESE ACADEMY OF SCIENCES [CN]/[CN]
Inventors
  • 李钢 LI, Gang
  • 徐纲 XU, Gang
  • 尹娟 YIN, Juan
  • 卢新根 LU, Xingen
  • 朱俊强 ZHU, Junqiang
  • 杜薇 DU, Wei
  • 穆勇 MU, Yong
  • 刘存喜 LIU, Cunxi
  • 刘富强 LIU, Fuqiang
  • 杨金虎 YANG, Jinhu
Agents
  • 中科专利商标代理有限责任公司 CHINA SCIENCE PATENT & TRADEMARK AGENT LTD.
Priority Data
201710053759.X22.01.2017CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) NOZZLE WITH ADJUSTABLE INNER AND OUTER FLOW CHANNEL EQUIVALENCE RATIOS, NOZZLE ARRAY, AND BURNER
(FR) BUSE À RAPPORTS D'ÉQUIVALENCE DE CANAUX D'ÉCOULEMENT INTERNE ET EXTERNE RÉGLABLES, RÉSEAU DE BUSES ET BRÛLEUR
(ZH) 一种内外流道当量比可调的喷嘴、喷嘴阵列和燃烧器
Abstract
(EN)
A nozzle with adjustable inner and outer flow channel equivalence ratios comprises a central cylinder (6), an outer-wall cylinder (3), and a wave swirler (5). The wave swirler (5) is coaxially disposed in the outer-wall cylinder (3). The central cylinder (6) is inserted into the wave swirler (5) along the axial direction of the wave swirler (5) and through an outlet end of the wave swirler (5). The wave swirler (5) is divided into an inner-ring swirling structure (13) and an outer-ring swirling structure (14). The outer-ring swirling structure (14), the central cylinder (6), and the outer-wall cylinder (3) define an outer flow channel. The inner-ring swirling structure (13) and the central cylinder (6) define an inner flow channel. The part of the central cylinder (6) embedded in the wave swirler (5) is an embedded section. The embedded section has a non-cylindrical structure and is used to adjust an equivalence ratio of the inner and outer flow channels. The embedded section adjusts the equivalence ratio of the inner and outer flow channels, thereby reducing flame propagation speed, avoiding backfiring in the central area of an outlet of a nozzle, and increasing a nozzle backfiring margin.
(FR)
L'invention concerne une buse ayant des rapports d'équivalence de canaux d'écoulement interne et externe réglables, ladite buse comprenant un cylindre central (6), un cylindre de paroi externe (3), et une coupelle de turbulence d'onde (5). La coupelle de turbulence d'onde (5) est disposée de manière coaxiale dans le cylindre de paroi externe (3). Le cylindre central (6) est inséré dans la coupelle de turbulence d'onde (5) dans la direction axiale de la coupelle de turbulence d'onde (5) et à travers une extrémité de sortie de la coupelle de turbulence d'onde (5). La coupelle de turbulence d'onde (5) est divisée en une structure de turbulence de bague interne (13) et une structure de turbulence de bague externe (14). La structure de turbulence de bague externe (14), le cylindre central (6) et le cylindre de paroi externe (3) délimitent un canal d'écoulement externe. La structure de turbulence de bague interne (13) et le cylindre central (6) délimitent un canal d'écoulement interne. La partie du cylindre central (6) intégrée dans la coupelle de turbulence d'onde (5) est une section intégrée. La section intégrée a une structure non cylindrique et est utilisée pour régler un rapport d'équivalence des canaux d'écoulement interne et externe. La section intégrée règle le rapport d'équivalence des canaux d'écoulement interne et externe, ce qui permet de réduire la vitesse de propagation de la flamme, d'éviter un retour de flamme dans la zone centrale d'une sortie d'une buse, et d'augmenter une marge de retour de flamme de buse.
(ZH)
一种内外流道当量比可调整的喷嘴,包括中间圆筒(6)、外壁圆筒(3)和波浪旋流器(5)。波浪旋流器(5)同轴设置于外壁圆筒(3)内,中间圆筒(6)沿波浪旋流器(5)轴向由波浪旋流器(5)的出口端嵌入波浪旋流器(5)。波浪旋流器(5)被分割成内圈旋流结构(13)和外圈旋流结构(14),外圈旋流结构(14)、中间圆筒(6)与外壁圆筒(3)围成外流道,内圈旋流结构(13)与中间圆筒(6)围成内流道。中间圆筒(6)嵌入波浪旋流器(5)的部分为嵌入段,嵌入段为非圆筒结构以调节内流道和外流道的当量比。通过嵌入段调节内流道和外流道的当量比,降低火焰传播速度,避免喷嘴出口中间区域发生回火,拓宽喷嘴的回火裕度。
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