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燃料量     
相关语句
  fuel quantity
     To guarantee the accuracy and reliability of fuel quantity measurement,a method for soft measurement of fuel quantity is presented based on data fusion.
     为了提高燃料量测量的准确性和可靠性,提出了基于数据融合的燃料量软测量方法。
短句来源
     The model for soft measurement of fuel quantity established through a simulation verification can reflect comparatively well the change in actual fuel quantity,improving the safety and reliability of the whole system.
     通过仿真验证,建立的燃料量软测量模型能够较好反映实际燃料量的变化,提高了系统的安全性和可靠性。
短句来源
     Soft Measurement of Fuel Quantity Based on Data Fusion and On-line Calibration of Coal Heat Values
     基于数据融合的燃料量软测量及煤质发热量在线校正
短句来源
     A model for the soft measurement of fuel quantity has been established mainly through an analysis of the measured values relating to fuel quantity and a statistical analysis of on-site operation data.
     主要通过与燃料量相关的测量值和对现场运行数据的统计分析,建立了燃料量软测量模型。
短句来源
     In order to achieve high NO reduced efficiency, low excess air coefficient, high reburning zone temperature, small coal particle and suitable reburning fuel quantity are required.
     对于同种煤种来说,要取得好的再燃效果,必须保持较低的过量空气系数、较高的再燃区温度、较小的煤粉粒径和合适的再燃燃料量
短句来源
更多       
  fuel rate
     This paper is aimed at a 300MW coal-fired boiler, designing and adjusting the radiative detection equipments, analysing the heat variation got in the waterwall, superheater, reheater, economizer and air preheater while the fuel rate, auxiliary air and tilt angle change individually.
     本课题针对某300MW 燃煤锅炉,设计并现场安装了辐射能检测设备,并以其获取的信号为参考,具体分析层间燃料量调整、改变一层燃料量、二次风量和燃烧器摆角对炉膛中水冷壁、过热器、再热器、省煤器和空气预热器吸热的影响,从而得到燃烧调整对辐射能的影响规律并建立其数学模型;
短句来源
     On the basis of analyzing NO_x formation and destruction mechanisms in coal combustion process, this paper presents a method to reduce NO_x emissions in stock boilers by reburn technology, and experimental research was developed by pot furnace, on which reburn fuel nozzles and overfire air nozzles were arranged at different location. Several influencing factors such as reburn fuel rate, reburn zone residence time and the primary zone stoichiometric ratio were studied.
     在分析煤燃烧过程中NOx生成及破坏机理的基础上,提出采用再燃烧技术降低层燃炉NOx排放的方法,并通过热态单元体模拟炉,在不同高度上布置再燃燃料喷嘴和燃尽风喷嘴,实验研究了再燃燃料量、再燃区停留时间和主燃区空气过剩系数等因素对层燃炉NOx排放的影响。
短句来源
     The radiant energy can reflect the change of the fuel rate or the quality of combustion more directly.
     通过辐射能信号能够更加直接地反映燃料量或者燃烧品质的改变。
短句来源
  fuel flow
     Finally, with a 200MW unit as an example, some transient performance indexes are calculated while feed water decreases 5% and fuel flow decreases 2 6%. The results are analyzed.
     针对某 2 0 0MW机组 ,进行了给水流量减少 5 % ,燃料量减少 2 6 %时机组瞬态经济性能的计算 ,并对计算结果进行了分析。
短句来源
     Radiation energy signals are capable of more directly reflecting the variation of fuel flow rate or combustion quality. An optimization system of radiation energy detection-based intelligent combustion-evolution has been set up to implement the evolution-optimization adjustment of the parameters of a thermodynamic control system.
     辐射能信号能够更加直接地反映燃料量或燃烧品质的变化 ,在此建立基于辐射能检测的智能燃烧进化优化系统 ,实现热力控制系统参数的进化优化整定。
短句来源
     The model static parameters are calculated by unit stable running operating point, and the model dynamic parameters are derived by turbine disturbance and fuel flow disturbance experiments.
     模型采用机组稳定运行工况点的数据确定静态参数,利用汽轮机调门开度扰动和燃料量扰动实验确定动态参数。
短句来源
     Combined with the design features of large-scale CFB boilers, the design scheme of combustion control system for home-made 410t/h CFB boilers, including the design of systems for load control, fuel flow adjustment, bed temperature control, and slag-cooler's bed-pressure control etc. , has emphatically been analyzed and explained.
     结合大型循环流化床 (CFB)锅炉的设计特点 ,对国产化 4 10t/hCFB锅炉燃烧控制系统方案 ,包括负荷控制、燃料量调节、床温控制、风量调节和冷渣器床压控制等系统设计 ,进行了重点分析说明
短句来源
     It was found in the experiments that the size of natural gas flames significantly increased as the air became more humid under the condition the fuel flow rate was increased when increasing air humidity thus to keep the exit temperature of the combustor to be constant.
     通过实验研究发现,在加湿的同时增加燃料量,从而保持燃烧室出口温度相同的情况下,天然气火焰的尺寸随空气湿度的增加会大幅增加。
短句来源
更多       
  quantity of fuel
     After the cracking heater EN - BA - 101 was expanded from SRT-Ⅳ to GK - 6, the ethylene capacity was increased from 45 to 65 kt/a. When naphtha is used as feedstock, the ethylene yield is up to 29. 45 % . The quantity of fuel gas consumed by heater is lower than before, the run - length of heater is up to 50 days.
     裂解炉(EN-BA-101)由Lummus SRT-Ⅲ型改造为KTI公司GK-6型后,生产能力提高,裂解石脑油时单程乙烯收率达到29.45%,单位乙烯生产耗用燃料量下降,副产超高压蒸汽直接并入系统,能耗下降,裂解炉运行周期达到48d。
短句来源
     The load of heat in heating furnace is mostly determined by the heat energy and quantity of fuel in heating furnace.
     加热炉热负荷大小主要取决于燃料发热值和供入加热炉内的燃料量

 

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      fuel quantity
    For 'on board' diagnosis purposes of the injected fuel quantity, ceramic flow sensor chips with a diameter of 2.2 mm were integrated into finished Common Rail injection nozzles of the valve covered orifice (VCO) or mini-sac hole (MSH) class.
          
    With a high-pressure hydraulic test bench the decrease in the injected fuel quantity as a function of welding parameters was determined for both nozzle classes.
          
    For further optimization of the combustion process, the information about the actually injected fuel quantity is desirable, especially in diesel engines equipped with direct injection technology.
          
    Based on the chemical and physical characters of fuels, fuel quantity distribution, sites as well as fire potential behaviour, fourteen fuel types have been classified in Northeast China Forest area.
          
    Diagram of the center wing tank fuel quantity indication system wiring on the 747 and its common connectors.
          
    更多          
      fuel rate
    The control algorithm including fuel rate - air rate - pressure characteristics and control strategies as well are presented.
          
    In particular, the influence of the relief volume on cavitation volume and injected fuel rate were computed.
          
    The results of calculation of the fuel rate, the maximum roof and glass melt temperatures, and their positions along the furnace depending on its output are given.
          
    It is shown that coatings with high blackness applied to the hot-front wall surface of recuperators make it possible to increase the temperature of heated air and to reduce the organic fuel rate in a furnace equipped with the appropriate recuperator.
          
    The efficiency of continuous and batch-operated thermal processing is analyzed in terms of fuel rate and heat-treatment process control.
          
    更多          
      fuel flow
    The thermal stability characteristics of kerosine-type fuels are examined using a heated-tube apparatus which allows independent control of fuel pressure, fuel temperature, tube-wall temperature and fuel flow rate.
          
    A high-speed camera and a flow rate metering system were used to obtain quantitative data regarding diesel spray and fuel flow dynamics.
          
    Previous researchers have demonstrated that strong pulsations of the fuel flow rate can significantly reduce the flame length and luminosity of laminar/transitional non-premixed jet flames.
          
    Experimental results concerning the studies of the laser fuel flow velocity and output pulse energy are presented.
          
    Characteristics of the experimentally detected free-oscillation combustion regime, which results in severe perodic flame front surface changes for a fixed fuel flow rate and a constant potential difference on the electrodes, were investigated.
          
    更多          
      flow of fuel
    Plasma ignition of combustion in a supersonic flow of fuel-air mixtures: Simulation problems
          
    The structure of flow and the process of chemical reactions are investigated under conditions of transverse injection of a swirling jet of combustion products into a flow of fuel-air mixture.
          
    Gas dynamic equations are derived which describe the flow of fuel combustion products in an asymmetrical annular channel in a two-dimensional nonstationary arrangement.
          
    Automatic shut-off is supposed to stop the flow of fuel when the fuel reaches the top of the receiving tank in order to prevent over filling.
          
    A special type of filter designed to interrupt the flow of fuel when dirt or water content becomes too great.
          
    更多          
      其他


    Following the research work on thermal characteristics of fuel-fired furnaces,four reheating furnaces in some mills are investigated. The Q-P equa tions, b-P equations and economical points of these furnaces are determined according to the general formula expressing the relations between fuel rate Q(or specific fuel consumption b) and productivity P. Comparing the heatings of different category of billets in the same.furnace and comparing the furnace performance before and after its partial reconstruction, etc,...

    Following the research work on thermal characteristics of fuel-fired furnaces,four reheating furnaces in some mills are investigated. The Q-P equa tions, b-P equations and economical points of these furnaces are determined according to the general formula expressing the relations between fuel rate Q(or specific fuel consumption b) and productivity P. Comparing the heatings of different category of billets in the same.furnace and comparing the furnace performance before and after its partial reconstruction, etc, the effects of constructive and operational parameters on fuel consumption has been analyzed. Also, comparing the actual working point (region) of furnace with its economical points, available fuel consumption has been predicted. The effects of some existing fuel saving measures, such as skid insulation and reconstruction of discharged end, has been assessed. Finally, posibility to further reduce the specific fuel consumption and the appropriate measures (increasing the hearth load factor, the specific productivity and the operatioual ratio of mill) are suggested.

    在研究火焰炉热工特性的基础上,研究了四座轧钢厂的加热炉。按照以往提出的热负荷Q(以及单位燃耗b)与生产率P之间的一般关系式,确定了这几座炉子的Q—P方程及b—P方程以及经济点的位置。对比同一座炉子加热不同坯料和炉体局部改造的前后情况等,分析了结构和操作等参数对单位燃耗的影响。从炉子实际工作点(区间)与经济点的对比中判断了炉子强化后可能节约的燃料量。确定了现行措施(水管包扎、出料端的改造)的效果,指出了进一步降低单位燃耗的可能性和应该采取的措施(提高炉底利用率、炉底强度和作业率等)。

    Gas turbine is a nonlinear, multi-input and multi-output powersystem. The increasing of the number of shafts and the number of control paramet-ers, togather with their corresponding control loops, make the gas turbines as acontrol object more and more complicate. This paper gives a study of the dynamicbehaviour of split shaft gas turbines with regenerator and adjustable nozzles by themodern control theory. With the detailed consideration of the physical phenomena,which take place in transient response, five...

    Gas turbine is a nonlinear, multi-input and multi-output powersystem. The increasing of the number of shafts and the number of control paramet-ers, togather with their corresponding control loops, make the gas turbines as acontrol object more and more complicate. This paper gives a study of the dynamicbehaviour of split shaft gas turbines with regenerator and adjustable nozzles by themodern control theory. With the detailed consideration of the physical phenomena,which take place in transient response, five differential and six algebraic equationsdescribing the dynamic behaviour are deduced, finally, through some special transfor-mation, a mathematical model of split shaft gas turbines in state-space form isobtained. On the basis of this state-space mathematical model, this paper presentsa common computer programm for the dynamic study of different split-shaft gasturbines with different control rules. This mathematical model may also be used forthe optimal control of split-shaft gas turbines.

    燃气轮机是一个复杂的非线性、多输入一多输出系统。随着燃气轮机轴数的增加(分轴、双轴、叁轴…),被调节量的增多和调节规律的复杂化(从只调节燃料量到同时调节燃料量、可调喷嘴、可转导叶…),以及在系统中包括多个调节回路,更增加了分析的复杂性。本文用现代控制理论对带回热器、具有可调喷嘴的分轴燃气轮机进行分析研究,列出了描述分轴机组的微分方程与代数方程,经变换后得到了分轴机组的状态空间数学模型。在此基础上,用子系统组合的方法编制了适合于不同分轴机组和不同调节规律动态分析的通用程序。此数学模型亦可用于分轴机组的最优控制。

    Taking a 200MW unit with a natural-circulation boiler as an example, this paper presents a model of boiler dynamics.Based upon the results of calcul-ation on a digital computer, the transient behaviors of the unit are discussed.For a step change in fuel flow rate only, the steam pressure and turbine out-put respond very slowly.But the rate of change in stearin temperature in the transient process may be dangerous for certain thick-walled elements.The situ-ation can be improved to a large extent by a simultaneous...

    Taking a 200MW unit with a natural-circulation boiler as an example, this paper presents a model of boiler dynamics.Based upon the results of calcul-ation on a digital computer, the transient behaviors of the unit are discussed.For a step change in fuel flow rate only, the steam pressure and turbine out-put respond very slowly.But the rate of change in stearin temperature in the transient process may be dangerous for certain thick-walled elements.The situ-ation can be improved to a large extent by a simultaneous change in the tur-bine governor valve position.It is suggested that all these facts should be consi-dered for a natural circulation boiler to be operated in the variable-pressure mode.

    本文以带有自然循环锅炉的20万瓩机组为例,说明了它的动态数学模型,并根据数字计算机得出的结果、示出几种操作量改变后机组主要参量的动态过程,加以讨论。当燃料量一次跃变后,蒸汽压力和汽机功率的响应很慢,而在过渡过程中汽温变化率对机组的某些部件可能达到危险的程度;如果同时改变汽机调门的开度,上述情况会得到很大的改善。对于将以变压方式运行的自然循环锅炉,本文内容可供参考。

     
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