HTR-PM高温气冷示范堆堆芯石墨粉尘产生量估算

在球床式高温气冷堆堆芯内,影响石墨球摩擦磨损率的关键条件为载荷与温度。此前,中国辐射防护研究院研究了载荷对石墨球摩擦磨损性能的影响,得到了石墨球磨损率与载荷的关系。本文在此基础上进一步研究了温度对石墨球磨损率的影响,通过拟合得到了石墨球磨损率与石墨球所受载荷、温度之间的关系式,结合HTR-PM高温气冷示范堆内燃料元件所受载荷和温度的分布情况,计算得出石墨球之间摩擦产生的石墨粉尘量约为14.01 g/d(5.1 kg/a)。

Estimation of graphite dust production in core of high temperature gas cooled reactor

Key conditions for wear rate of graphite balls are load and temperature in the core of a spherical bed type high temperature gas cooled reactor. In its previous study, China Institute for Radiation Protection obtained the relationship between wear rate of graphite balls and load. In this paper, further study on the effect of temperature upon wear rate of graphite balls is implemented and the produced amounts of graphite dust are calculated. Fitting the relationship of loading and temperature on wear rate of graphite balls, as well as the distribution of load and temperature of fuel elements in HTR-PM,the produced graphite dust was calculated as about 14.01 g/d (5.1 kg/a).