内套筒安装测量系统及其圆度误差滤除算法

System Contributing to Install Inside Sleeve and Filtering Algorithm to Evaluate Its Roundness Error

核电蒸发器内套筒安装过程中需对内外筒体同心度及内套筒圆度误差进行测定。基于实际需要,研制了核电蒸发器内套筒安装测量系统。介绍了该系统的组成及测量原理。针对系统数据处理过程中的实际情况,提出将相邻测点的位置关系分为三类:凸型、凹型、共线,并根据这三种类型,提出基于相邻测点位置关系确定最大内接圆的滤除算法。该算法便于直观理解,滤除无用点的效率较高,可有效节省数据处理时间。在实际应用中,整个系统测量精度可达到0.7mm,满足工程需要,有较高的实用价值。

Nuclear evaporator has two sleeves, outside sleeve and inside sleeve. To install inside sleeve accurately, the concentricity of the two sleeves and the roundness error of inside sleeve should be evaluated. The system which contributes to install inside sleeve of nuclear evaporator is developed. It is introduced that the parts of the system and the measuring process. The position forms among three close points are divided into three forms： convex, concave and collinear in the data processing. And it is found out how to filter the points that can＇t fix maximum inscribed circle. Based on that, the filtering algorithm is presented. This algorithm is efficient and easy to be understood. It can save the data processing time. In practical application, the measuring accuracy of the whole system is 0.7 mm, which can meet the needs of project and have practical value.