During the operation of a nuclear power plant,as a channel connecting the pressurizer to the hot section of the main pipeline,the pressurizer can adjust the working pressure of the coolant in the main circuit system through a surge tube to avoid the possibility of accidents caused by high or low pressure.The installation of surge pipes involves long pipelines,multiple welding joints,and high installation accuracy requirements,requiring precise assembly and installation process control.This article mainly describes the process method of using a self-developed high-precision optical dual base station spatial positioning measurement system to achieve the installation of fluctuation tubes.Application research is carried out from the aspects of measurement control network layout,measurement of fluctuation tube body size,measurement of connecting pipe nozzle,simulation group,etc.Through simulation group matching,the prefabricated processing size of pipeline groove can be determined in advance,compared to the traditional method of manual measurement after actual splicing,It can significantly shorten the on-site construction period,and at the same time,repetitive measurements were conducted on the size of the fluctuation tube body.The maximum difference between the three measurement results is 0.11 mm,which meets the accuracy requirement of less than 0.3 mm between the two three-dimensional measurements in nuclear power plants.It has been verified that the system can better meet the on-site usage needs.
关键词
核电厂/波动管/精密测量仪器/模拟组对
Key words
nuclear power plants/wave tube/precision measuring instruments/simulate pairing
维普
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