关键词: HL-3, 基准网, 部件定位测量, 激光跟踪仪

Abstract: According to the installation accuracy requirements of HL-3 assembly design, it is necessary to establish a high-precision datum network and adopt advanced measuring equipment such as laser tracker to measure spatial position of the installed components. The established datum network realizes the maximum uncertainty of the spatial coordinates of the reference points in the network to be 0.133mm. Especially, during the installation of vacuum vessel, temporary first wall/limiter and other components, positioning measurement, data feedback, installation and adjustment are carried out to achieve installation coaxiality of vacuum vessel in Æ1.84mm, which meets the coaxiality within Æ3mm; elevation deviation is between –0.08 and +0.136mm, which meets the elevation deviation within ±1mm. The maximum deviation of temporary first wall/limiter installation is +1.9351mm and the minimum deviation is –1.8337mm, which meets the surface position error of each module in ±2mm. The establishment of datum network and high-precision positioning and measurement of components ensure high-quality construction of HL-3 tokamak.

Key words: HL-3, Datum network, Component positioning measurement, Laser tracker