公开(公告)号：US07927095B1

公开(公告)日：2011-04-19

申请号：US11864998

申请日：2007-09-30

申请人： Benjamin T. Chorpening ,  Jimmy D. Thornton ,  E. David Huckaby ,  William Fincham

发明人： Benjamin T. Chorpening ,  Jimmy D. Thornton ,  E. David Huckaby ,  William Fincham

IPC分类号： F23N5/00

CPC分类号： F23N1/022 ,  F05D2270/082 ,  F05D2270/083 ,  F23N5/242 ,  F23N2023/42 ,  F23N2029/00 ,  F23N2041/20 ,  F23R2900/00013

摘要： A time-varying voltage is applied to an electrode, or a pair of electrodes, of a sensor installed in a fuel nozzle disposed adjacent the combustion zone of a continuous combustion system, such as of the gas turbine engine type. The time-varying voltage induces a time-varying current in the flame which is measured and used to determine flame capacitance using AC electrical circuit analysis. Flame capacitance is used to accurately determine the position of the flame from the sensor and the fuel/air ratio. The fuel and/or air flow rate (s) is/are then adjusted to provide reduced flame instability problems such as flashback, combustion dynamics and lean blowout, as well as reduced emissions. The time-varying voltage may be an alternating voltage and the time-varying current may be an alternating current.

摘要翻译： 时间变化的电压被施加到安装在燃料喷嘴中的传感器的电极或一对电极上，燃料喷嘴邻近燃气涡轮发动机类型的连续燃烧系统的燃烧区域。 时变电压引起火焰中的时变电流，其被测量并用于使用AC电路分析来确定火焰电容。 火焰电容用于精确地确定来自传感器的火焰的位置和燃料/空气比。 然后调整燃料和/或空气流速以提供减少的火焰不稳定性问题，例如回火，燃烧动力学和精益喷吹以及减少的排放。 时变电压可以是交流电压，并且时变电流可以是交流电流。

公开(公告)号：US07096722B2

公开(公告)日：2006-08-29

申请号：US10329664

申请日：2002-12-26

申请人： Kelly J. Benson ,  Jimmy D. Thornton ,  George A. Richards ,  Douglas L. Straub

发明人： Kelly J. Benson ,  Jimmy D. Thornton ,  George A. Richards ,  Douglas L. Straub

IPC分类号： G01M19/00

CPC分类号： F23N5/242 ,  F05B2260/80 ,  F23N5/123 ,  F23N2041/20 ,  F23R2900/00013

摘要： An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. A control module applies a voltage potential to the electrode and detects a combustion ionization signal and determines if there is an oscillation in the combustion ionization signal indicative of the occurrence of combustion stability or the onset of combustion instability. A second electrode held in a coplanar but spaced apart manner by an insulating member from the electrode provides a combustion ionization signal to the control module when the first electrode fails. The control module broadcasts a notice if the parameters indicate the combustion process is at the onset of combustion instability or broadcasts an alarm signal if the parameters indicate the combustion process is unstable.

摘要翻译： 提出了一种感测燃烧稳定性发生的装置和方法。 电极定位在涡轮机燃烧室中，使得电极暴露于燃烧室中的气体。 控制模块向电极施加电压并检测燃烧电离信号，并确定燃烧电离信号中是否存在表示燃烧稳定性发生或燃烧不稳定性发生的振荡。 当第一电极失效时，通过绝缘构件与电极保持共面但间隔开的第二电极提供燃烧电离信号。 如果参数指示燃烧过程处于燃烧不稳定的开始时，控制模块广播通知，或者如果参数指示燃烧过程不稳定则广播报警信号。

公开(公告)号：US06887069B1

公开(公告)日：2005-05-03

申请号：US09955582

申请日：2001-09-18

申请人： Jimmy D. Thornton ,  George A. Richards ,  Keith A. Dodrill ,  Roy S. Nutter, Jr. ,  Douglas Straub

发明人： Jimmy D. Thornton ,  George A. Richards ,  Keith A. Dodrill ,  Roy S. Nutter, Jr. ,  Douglas Straub

IPC分类号： F23D14/02 ,  F23D14/82 ,  F23N5/08 ,  F23N5/12 ,  G01N30/68

CPC分类号： F23D14/02 ,  F23D14/82 ,  F23D2208/10 ,  F23D2209/10 ,  F23N5/08 ,  F23N2031/28 ,  F23N2041/20

摘要： The present invention is directed to an apparatus for the monitoring of the combustion process within a combustion system. The apparatus comprises; a combustion system, a means for supplying fuel and an oxidizer, a device for igniting the fuel and oxidizer in order to initiate combustion, and a sensor for determining the current conducted by the combustion process.The combustion system comprises a fuel nozzle and an outer shell attached to the combustion nozzle. The outer shell defines a combustion chamber. Preferably the nozzle is a lean premix fuel nozzle (LPN). Fuel and an oxidizer are provided to the fuel nozzle at separate rates. The fuel and oxidizer are ignited.A sensor positioned within the combustion system comprising at least two electrodes in spaced-apart relationship from one another. At least a portion of the combustion process or flame is between the first and second electrodes. A voltage is applied between the first and second electrodes and the magnitude of resulting current between the first and second electrodes is determined.

摘要翻译： 本发明涉及一种用于监测燃烧系统内燃烧过程的装置。 该装置包括： 燃烧系统，用于供应燃料和氧化剂的装置，用于点燃燃料和氧化剂以启动燃烧的装置以及用于确定由燃烧过程进行的电流的传感器。 燃烧系统包括燃料喷嘴和附接到燃烧喷嘴的外壳。 外壳限定燃烧室。 优选地，喷嘴是贫燃料预混合燃料喷嘴（LPN）。 燃料和氧化剂以分开的速率提供给燃料喷嘴。 燃料和氧化剂被点燃。 定位在燃烧系统内的传感器包括彼此间隔开的关系中的至少两个电极。 燃烧过程或火焰的至少一部分在第一和第二电极之间。 在第一和第二电极之间施加电压，确定第一和第二电极之间产生的电流的大小。