Consideration on Improvement of Failed Fuel Separator Roller in High Temperature Gas-Cooled Reactor
-
摘要: 由于现有高温气冷堆碎球分离器辊筒采用直齿式齿条，并在齿条上镶嵌改向齿，燃料球经过改向齿时会产生碰撞，易造成燃料球磕伤破损，并引起装置振动；同时该结构不能保证所有不合格燃料球都被分选出来，检出率不可控。本文对碎球分离器辊筒进行改进，采用螺旋变V形槽自扰动式辊筒；对辊筒结构原理进行阐述并给出辊筒V形槽曲面方程，同时对燃料球扫描轨迹进行仿真。改进结果表明燃料球能够自身进行姿态调整，可达到平稳运行、检出率高、避免磕碰的目的，值得在该堆型内推广应用。Abstract: Since the existing high-temperature gas-cooled reactor failed fuel separator roller adopts a straight-toothed rack, and the redirecting teeth are embedded on the rack, the fuel balls will collide when passing through the redirecting teeth, which is easy to cause the fuel balls to be damaged, and cause the device to vibrate; At the same time, the structure can not ensure that all unqualified fuel balls are sorted out, and the detection rate is uncontrollable. In this paper, the roller of the failed fuel separator is improved by adopting a spiral V-shaped groove self-disturbing roller; the structure principle of the roller is described, the curved surface equation of the V-shaped groove of the roller is given, and the scanning trajectory of the fuel ball is simulated. The improvement results show that the fuel balls can adjust their posture by themselves, which can achieve the purpose of stable operation, high detection rate and avoiding collision. It is worthy to be popularized and applied in this reactor type.
-
Key words:
- Failed fuel separator /
- Roller /
- V-shaped groove /
- Posture adjustment /
- Scan line
-
图 1 V形槽与球体截面参数示意图
α—OA与竖直方向的夹角；β—OQ与OA的夹角；θ—V形槽的张角（一般可选择直角，也可以非直角）；H—球心与主轴距离；h1、h2—球体与V形槽两锯齿面的触点B、点B’与主轴之间的距离；r—被测燃料球半径
Figure 1. Schematic Diagram of Section Parameters of V-shaped Groove and Ball
图 2 燃料球转动轴和检测规板接触点示意图
Figure 2. Schematic Diagram of Contact Point between Fuel Ball Rotating Shaft and Detection Gauge Plate
-
[1] 刘继国,肖宏伶,王伟成. 10 MW高温气冷实验堆燃料元件装卸系统研制[J]. 原子能科学技术,2003, 37(4): 334-339. doi: 10.3969/j.issn.1000-6931.2003.04.010 [2] 刘继国,肖宏伶. 10 MW高温堆燃料元件输送速度的测量[J]. 高技术通讯,2001, 11(5): 95-96. doi: 10.3321/j.issn:1002-0470.2001.05.024 [3] 英特阿托姆公司. 球形燃料核反应堆燃料元件的排出装置: 德国, 1042620A[P]. 1990-05-30. [4] 刘继国,程宏斌,刘欣. 10MW高温气冷堆电涡流碎球分选装置的研制[J]. 高技术通讯,1999(9): 52-54. [5] 王金华, 张海泉, 刘继国. 球床高温气冷堆一体化燃料卸料装置: 中国, 1975937A[P]. 2007-06-06. -
下载:
点击查看大图
图(5)
计量
- 文章访问数: 188
- HTML全文浏览量: 69
- PDF下载量: 26
- 被引次数: 0
