公开(公告)号：US5748090A

公开(公告)日：1998-05-05

申请号：US892833

申请日：1997-07-16

申请人： Stephen E. Borg ,  James W. West ,  Robert M. Lawrence ,  Samuel E. Harper, Jr. ,  David W. Alderfer

发明人： Stephen E. Borg ,  James W. West ,  Robert M. Lawrence ,  Samuel E. Harper, Jr. ,  David W. Alderfer

IPC分类号： F23N5/08 ,  G08B17/12

CPC分类号： F23N5/082 ,  F23N2029/14

摘要： A device has been developed which monitors the presence of a flame within a combustion chamber. The optical flameout detection system responds to gross changes in combustor light intensity, which is monitored in two spectral bands. A photomultiplier tube makes optical measurements in the ultraviolet portion of the spectrum, and a silicon photodiode covers the visible region. The detectors, located outside the combustion chamber, receive the light energy radiated from the combustion process through fiber optic probes designed to operate in a high pressure environment. The optical fibers are aimed diagonally through the center of the injector at the combustion chamber wall downstream of the injector. The probed observe events occurring within a narrow conical-shaped field of view so that the system can quickly detect longitudinal movement of the flame front away from the injector. If a change in intensity of the flame is detected, the fuel supply to the combustion chamber is shut off, limiting the amount of unburned fuel in the combustion chamber which could reignite.

摘要翻译： 已经开发了一种监测燃烧室内火焰存在的装置。 光学熄火检测系统响应于在两个光谱带中监测的燃烧器光强度的总变化。 光电倍增管在光谱的紫外部分进行光学测量，硅光电二极管覆盖可见光区域。 位于燃烧室外的探测器通过被设计成在高压环境中工作的光纤探头接收从燃烧过程辐射的光能。 在注射器下游的燃烧室壁处，光纤被对角地穿过喷射器的中心。 探测到的观察事件发生在窄锥形视野内，使得系统可以快速检测火焰前端远离喷射器的纵向运动。 如果检测到火焰的强度变化，则关闭燃烧室的燃料供给，从而限制燃烧室中可能重燃的未燃烧燃料的量。