球床反应堆燃料元件脉冲气力提升动力特性分析
Dynamical Analysis of Impulse Pneumatic Transportation of Fuel Element in Pebble Bed Reactor
-
摘要: 球床反应堆采用球形燃料元件多次通过堆芯的循环运行方式，燃料元件从堆芯底部连续单列排出后依靠管路气动推力逐一被提升至堆芯顶部。本文建立了球形燃料元件“近等径”管路脉冲气力提升运动模型，并在此基础上分析了气源压力、控制阀有效截面积、球外径与管内径的直径比等参数对提升过程燃料元件运行速度的影响。利用测速装置测量了10 MW球床反应实验堆提升器出口燃料元件的运行速度，实验结果接近理论分析结果。近等径球流管路脉冲气力提升运动模型的建立及实验研究为球床反应堆燃料输送系统优化设计及运行调控提供了理论依据。Abstract: Pebble bed reactors use “multi-pass” circulation scheme of spherical fuel element. The fuel spheres are uploaded from the core one by one, and lifted up to return to the core through the pneumatic conveying pipeline. In this paper, the motion model of impulse pneumatic transportation of spherical fuel characterized by the “approximately equal diameter” was established. Some influences, such as air supply pressure, effective area of controlling valve, sphere-to-pipe diameter ratio, etc., to the velocity of fuel elements were analyzed. The practical velocity of fuel element was measured by using speed measuring instrument fixed in 10 MW pebble bed reactor. The test results agree with the theoretical results. The establishment of the motion model of fuel element in impulse pneumatic transportation provides the foundation for the optimum design and regulation of fuel transporting system.
-
-
[1] 吴宗鑫. 我国高温气冷堆的发展[J]. 核动力工程，2000，21(1)：39-40.WU Zongxin. The development of high temperature gas cooled reactor in China[J]. Nucl Power Eng, 2000, 21(1): 30-40(in Chinese). [2] 刘继国，梁锡华，黄鹏. HTR10燃料元件的气体输送[J]. 核动力工程，2001，22(6)：526-529.LIU Jiguo, LIANG Xihua, HUANG Peng. Gas transportation of fuel element in HTR-10[J]. Nucl Power Eng, 2001, 22(6): 526-529(in Chinese). [3] FABER R, MAVERSBERGER P, RYSY W. Fundamentals of the pneumatic transport of spherical fuel elements[J]. Kerntechnik, 1972, 14(4): 153. [4] RYSY W. Mathematical description of the sphere movement in tubes, especially in the fuel element circulating system of a pebble bed reactor[J]. Forschung Im Ingenieurwesen-Engineering Research, 1973, 39(1): 29-34. [5] SMC(中国)有限公司. 现代实用气动技术[M]. 北京:机械工业出版社,1998. [6] 曾凯，沈鹏，都东，等. 球床堆燃料元件循环系统任务剖面的建立[J]. 核动力工程，2011，32（4）：10-13.ZENG Kai, SHEN Peng, DU Dong, et al. Establishment of mission profile of fuel element cycle-lifting in pebble bed reactor[J]. Nucl Power Eng, 2011, 32（4）: 10-13(in Chinese).
计量
- 文章访问数: 724
- HTML全文浏览量: 0
- PDF下载量: 1218
下载:
