Abstract:
A probe assembly for measuring the concentration of exhaust's emissions in a turbine engine. The probe assembly (10) including a first probe member (14) configured and operable to passively generate a beam of light wherein the wavelength of the beam of light is contingent upon the configuration of the first probe member. A second probe member (24) positioned in the probe assembly to receive the beam of light generated by the first probe member, the second probe member configured and operable to attenuate the light passively generated from the first probe member contingent upon the gaseous species present in the exhaust emissions (20) of the turbine engine (100).
Abstract:
A fuel injector for a gas turbine combustor is disclosed which includes a feed arm having a flange for mounting the injector within the combustor and a fuel nozzle (26) depending from the feed arm for injecting fuel into the combustor for combustion. An optical sensor array is operatively associated with the fuel nozzle for observing combustor flame characteristics. The optical sensor array includes a plurality of sapphire rods (194) positioned to be close enough to the combustor flame to oxidize soot deposits thereon.
Abstract:
A fuel injector, 20, for a gas turbine engine is disclosed which includes a nozzle body, 28, for issuing fuel and air into a combustor, 30, and an on-axis optical probe, 50, located within the nozzle body, 28, for observing combustor flame radiation, wherein the optical probe, 50, includes a plurality of optical fiber bundles, 60a - 60g, extending to a distal end of the probe, 50, and a shaped lens, 56, is supported at the distal end of the probe, 50, to provide a multi-directional field of view of combustion characteristics and properties in an operating gas turbine engine combustor.
Abstract:
A system is disclosed for actively controlling combustion in a gas turbine engine (10), which includes a fuel injector (110) for issuing fuel into a combustion chamber of the gas turbine engine (10). The fuel injector (110) has a dynamic pressure sensor (130) for measuring acoustic pressure within the combustion chamber and a flame sensor (140) for observing flame characteristics within the combustion chamber. The system further includes a high speed valve assembly (112) for controlling flow of fuel to the injector (110) and an electronic controller associated with the fuel injector (110) for commanding the valve assembly (112) to deliver fuel to the fuel injector (110) at a commanded flow rate, based upon input from the sensors (130,140) in the fuel injector (110).
Abstract:
A non-intrusive sensor for measuring mass flow of a medium flowing through a tube comprises: a probe having a predetermined length disposed along an external wall of the tube; a heater for heating the probe at a first point along the length thereof; a first temperature measuring device disposed at the first point for measuring a temperature of the probe and for generating a first signal T h representative thereof; a second temperature measuring device disposed at a second point along the length of the probe for measuring another temperature of the probe and for generating a second signal T t representative thereof; a third temperature measuring device disposed along the external wall of the tube a distance away from the probe for measuring an ambient temperature and for generating a signal T a representative thereof; and circuitry coupled to the first, second and third temperature measuring devices for generating a mass flow signal based on a ratio of temperature differential signals (T h - T a )/(T t - T a ). A counterpart method is also disclosed.
Abstract:
A non-intrusive sensor for measuring mass flow of a medium flowing through a tube comprises: a probe having a predetermined length disposed along an external wall of the tube; a heater for heating the probe at a first point along the length thereof; a first temperature measuring device disposed at the first point for measuring a temperature of the probe and for generating a first signal T h representative thereof; a second temperature measuring device disposed at a second point along the length of the probe for measuring another temperature of the probe and for generating a second signal T t representative thereof; a third temperature measuring device disposed along the external wall of the tube a distance away from the probe for measuring an ambient temperature and for generating a signal T a representative thereof; and circuitry coupled to the first, second and third temperature measuring devices for generating a mass flow signal based on a ratio of temperature differential signals (T h - T a )/(T t - T a ). A counterpart method is also disclosed.
Abstract translation:用于测量流过管的介质的质量流量的非侵入传感器包括:具有沿管的外壁设置的预定长度的探针; 加热器,其沿着其长度在第一点处加热探针; 第一温度测量装置,设置在第一点处,用于测量探针的温度,并产生代表其的第一信号T h; 第二温度测量装置,设置在沿探针长度的第二点处,用于测量探针的另一温度,并产生代表其的第二信号T t; 第三温度测量装置,沿着管的外壁离开探头一定距离,用于测量环境温度并产生代表其的信号T a; 以及耦合到第一,第二和第三温度测量装置的电路,用于基于温差信号(T h -T a)/(T t -T a)的比率产生质量流量信号。 还公开了一种对应方法。
Abstract:
A fuel injector for a gas turbine combustor is disclosed which includes a feed arm (22) having a flange (24) for mounting the injector within the combustor and a fuel nozzle (26) depending from the feed arm for injecting fuel into the combustor for combustion. An optical sensor array (34) is located within the fuel nozzle for observing combustion conditions within the combustor.
Abstract:
A system for stabilizing combustion in a gas turbine engine comprises a) optical sensing means embedded within a fuel injector for observing conditions within a combustion chamber of a gas turbine engine; b) means for detecting combustion instabilities based upon conditions observed by the optical sensing means; and c) means for modulating a fuel flow rate to reduce detected combustion instabilities.