基于线结构光视觉的燃料组件变形测量技术研究

Research on Deformation Measurement Technique of Fuel Assembly Based on Line Structured Light Vision

摘要:

针对快堆燃料组件外形变形参数的测量，设计了基于线结构光的燃料组件变形测量系统，并考虑到辐射对电子元器件和测量精度的影响，进行了测量系统的辐射屏蔽设计。对辐射屏蔽玻璃的折射对测量的影响进行了研究，并在空气中线结构光测量模型的基础上提出一种折射校正的线结构光测量模型。在空气中进行测量系统标定，然后对加玻璃的测量值进行折射校正，通过多组测量实验表明折射校正模型校正误差为±0.05 mm，线结构光燃料组件测量系统的全局参数测量的标准差不大于0.03 mm。组件测量系统能在一定辐照剂量下能实现燃料组件变形参数的高精度测量，对于获取燃料组件物理参数和堆芯设计具有重要的意义。

Abstract:

Aiming at the measurement of deformation parameters of the fast reactor fuel assembly, a deformation measurement system based on the line structure light was designed. Considering the effect of radiation on the electronic components and measurement accuracy, radiation shielding design of the measurement system was carried out. The effect of refraction of the radiation shielding glass on measurement was studied. Based on the air-line structured light measurement model, a line structure light measurement model of the refractive correction was proposed. The calibration of the measurement system was carried out in the air, and then the measured value of added glass was corrected. Several measurement experiments results prove that the correction error of the refractive correction model is ±0.05 mm, and the standard deviation of global parameter measurement of the line structured light fuel assembly measurement system is not more than 0.03 mm. The measurement system can achieve high precision measurement of the deformation parameters of fuel assembly under a certain irradiation dose, which is of great significance for obtaining the physical parameters of fuel assembly and the reactor core design.