西安交通大学动力工程多相流国家重点实验室,西安,710049
网络首发:2012-05-10,
纸质出版:2012
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张冬青 1, 杨冬 1, 刘计武 1, 等. 超临界循环流化床下降水冷屏流量分配特性试验研究[J]. 西安交通大学学报, 2012,46(5):32-37.
Distribution Characteristics of Downward Water-Cooling Panel in Supercritical Circulating Fluidized Bed Boiler[J]. 2012, 46(5): 32-37.
针对350 MW超临界循环流化床锅炉的结构参数
建立空气-水试验台
模拟了超临界循环流化床锅炉在25%、50%和70% 3种额定负荷下气液两相流在下降水冷屏并联支管中的分配特性.采用快关阀门法和分相测量法分别测量了下降水冷屏各并联支管内的体积流量含气率分布、干度分布、各相流量分布和差压分布.试验发现:在进口集箱干度为0.3~0.9的范围内
25%负荷下的体积流量含气率、干度分布和差压分布最均匀
并且随着锅炉负荷的增加
各并联支管内的相分配偏差增加; 25%负荷下各并联支管内各相的流量分配均匀性最差
并且随着锅炉负荷的增加
各并联支管内流量分配均匀性得到改善.
An air-water test-bed was designed according to the configuration and parameter characteristics of the water-cooling panel of a supercritical circulating fluid bed boiler to study the flow distribution characteristics of the water-cooled screen at three operational loads of 25% ECR
50% ECR and 70% ECR
respectively. The volumetric fractions of air content
the quality distribution
the phase flow distribution
and the pressure distribution in each branch were measured by the quick-close valve method and the phase measurement method. The results show that the volumetric fraction of air content
the quality distribution
and the pressure distribution in the parallel branches were most uniform at the load of 25% ECR when the inlet quality was 0.3-0.9. The deviation of the phase distribution in the branches increased with an increase in the load. In addition
the uniformity of the flow distribution increased with the load
indicating that the flow distribution was the worst at the load of 25% ECR.
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朱玉琴,陈听宽,毕勤成,等.超临界压力600 MW直流锅炉流量分配特性的试验研究[J].锅炉技术,2006,37(5):11-14.
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周旭,杨冬,肖峰,等.超临界循环流化床锅炉中等质量流速水冷壁流量分配及壁温计算 [J].中国电机工程学报,2009,29(26):13-18.
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LI K N, WU X B, YIN Y L. Experimental study of gas-liquid two-phase flow even distribution in parallel-flow evaporator[J]. Journal of Superconductivity and Novel Magnetism, 2010, 23(6): 1111-1114.
朱玉琴,毕勤成,陈听宽,等. 变压运行直流锅炉水冷壁中间集箱汽液分配特性的试验研究[J]. 动力工程, 2008,28(6): 834-838.
ZHU Yuqin, BI Qincheng, CHEN Tingkuan, et al. Experimental study on steam-liquid distribution characteristics of intermediate headers of the once-through boiler with variable pressure operation[J].Journal of Power Engineering,2008,28(6): 834-838.
超临界汽轮机中压透平级流动传热特性研究. 2011,45(7): 9-14.
超临界压力水在倾斜上升管内传热的试验研究. 2011,45(5): 6-11.
高压高浓度 CO2烟气辐射换热特性分析与计算. 2011,45(5): 17-22.
预干燥燃褐煤发电系统理论研究. 2011,45(5): 1-5.
超临界直流锅炉水冷壁压降及出口汽温计算. 2011,45(1): 38-42.
联合循环电站改造为整体煤气化联合循环的粗煤气冷却. 2010,44(11):71-76.
蒸发毛细弯液面热质传输特征及其稳定性分析. 2010,44(3):21-25.
低质量流速垂直和倾斜并联内螺纹管两相流不稳定性研究. 2010,44(1):17-21.
低质量流速垂直并联内螺纹管中两相流不稳定性试验研究. 2009,43(7):36-39.
原生生物质在超临界水流化床系统中气化制氢. 2009,43(2):111-115.
生物质在超临界水流化床系统中部分氧化气化制氢. 2009,43(1):5-9.
生物质与煤超临界水气化制氢的实验研究. 2008,42(6):765-769.
超临界水中花生壳气化制氢催化剂的筛选与研究. 2008,42(7):913-918.
高含量煤在超临界水中气化制氢的实验研究. 2008,42(7):919-924.
生物质/煤超临界水气化制氢的主要影响因素. 2008,42(3):368-371.
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