CAJ | 학술논문

为了实时监测汽轮机末级湿蒸气中水滴大小分布和浓度的变化，指导汽轮机的安全经济运行和锅炉给水量，减小湿蒸气对汽轮机的影响，提出了一种以CCD为探测器、测量湿蒸气参量的异轴角散射方法；根据模拟汽缸的结构和参量建立数学模型，并进行了仿真分析，得出水滴群质量中间半径、水滴数浓度和尺度分布参量的变化对散射比的影响规律；分别对不同工况下的湿蒸气进行了实验测量；仿真和实验结果变化趋势基本一致。结果表明，利用异轴角散射法测量湿蒸气参量变化是可行的。该研究对湿蒸气参量以及其它微粒的监测是有帮助的。
위료실시감측기륜궤말급습증기중수적대소분포화농도적변화，지도기륜궤적안전경제운행화과로급수량，감소습증기대기륜궤적영향，제출료일충이CCD위탐측기、측량습증기삼량적이축각산사방법；근거모의기항적결구화삼량건립수학모형，병진행료방진분석，득출수적군질량중간반경、수적수농도화척도분포삼량적변화대산사비적영향규률；분별대불동공황하적습증기진행료실험측량；방진화실험결과변화추세기본일치。결과표명，이용이축각산사법측량습증기삼량변화시가행적。해연구대습증기삼량이급기타미립적감측시유방조적。
In order to monitor the density and distribution of water-drop at the end stage of the steam turbine , the off-axis angular scattering method was proposed to measure the parameters of wet steam .In this way , it not only guides economic operation of the turbine but also guarantee water allowance of the boiler .At the same time , it can reduce the influence of wet steam on the turbine .Based on the structure and parameters of mock cylinder , a mathematic model was built.This mathematic model can find whether the middle radius of quantity , the density of number and the distribution of magnitude in water-drop have impact on the scattering ratio .The wet steam was measured under different conditions .The analysis result was similar to the experimental result .The experimental results proved the off-axis angular scattering method is feasible for measuring wet steam parameters .This research is helpful for monitoring the parameters of wet steam and other particles.