Design Of Film Device Of Radiographic Testing For CFETR Vacuum Chamber

Bring the shortage of energy and fossil energy use in the process of environmental pollution has become an obstacle to economic growth and sustainable development and survival of human society beset bottleneck.In order to solve the energy problems restricting the human development,to research on the fusion.The study found that the fusion reactor itself is safe,no nuclear leaks,factors of human life and safety of nuclear radiation the potential threat of nuclear fusion,and the raw material is deuterium and tritium,the earth reserves are very rich,is the ideal clean energy security.Therefore,nuclear fusion energy is considered permanent energy future of mankind,the development of nuclear fusion energy is of great scientific significance and strategic significance.The vacuum chamber as the future fusion reactor is the core component container body,provide plasma steady-state operating environment.At present,China's future reactors are still in the conceptual design stage,for some technical problems in the manufacturing process of the vacuum chamber must be related to the in-depth study of great significance.Based on these key technologies,manufacturing complete vacuum room 1/8 sector a full size section,and as the future development of fusion reactor vacuum chamber assembly,testing,physical platform teleoperation engineering physics experiment,the field of manufacturing technology in China in the future of the fusion reactor chamber to achieve substantial breakthroughs among the international advanced level.China Fusion Engineering Test Reactor(CFETR)vacuum chamber volume cannot be finished in one time,the vacuum chamber is divided into 16 sectors for processing and assembly,the 2 sector of the 1/16 group by butt welding compensation ring into a 1/8 vacuum chamber.The vacuum chamber operation process requirements with high stability and reliability of.1/16 sector group are butt welding effect of welding reliability of the vacuum chamber defects,so the detection of 1/16 group at the welding quality of welding sector to ensure the future fusion reactor the reaction device to have the important meaning to the safe running.Based on the literature review,first carries on the analysis to the domestic and foreign research status of vacuum chamber,understand the commonly used method of seam detection,by contrast detection method,method of X-ray detection theory of shell weld is proposed.The vacuum chamber for the double shell structure,the distance between the two shell change range of 180-280mm,and a reinforcing rib is arranged between the two shells.The distance between two adjacent ribs 300mm,weld in two ribs.In order to ensure the accuracy of assembly,the 2 sector of the 1/16 group of welding in the vertical plane for 1/8 vacuum chamber in a vertical plane section of the D type,D type welding seam is generated.The X-ray detection of artificial cloth The lack of space,the film is difficult to locate,detection space changes and other issues.To design a kind of auxiliary tool can realize automation of cloth in the inner and outer shell body to solve the detection problem,complete detection.Ray cloth device can meet in the narrow space of the shell variable free,and can accurately send the film to a predetermined position,and can guarantee the plate and weld joint,the X-ray detection after the completion of the film sent.According to the characteristics of space detection summarizes the changes of cloth tooling to meet all functions.The function of X-ray detection of decomposition,establishment of crawling support part respectively,mechanism of cloth,crank rocker mechanism.The mechanism of integration to build three-dimensional model based on 3D model in different test operation conditions,calculation of the size parameters the structure at the same time.In order to ensure the accuracy of X-ray detection,film positioning device design.The actual test conditions of vacuum chamber into the vertical state,analysis of cloth tooling in the whole piece of cloth in the process of the maximum force position analysis,according to the analysis to overcome the crawling in the vertical section of the maximum force,according to the results of the analysis of the type selection calculation of the motor and the ball screw.A piece of cloth to control tooling design.According to the operation characteristics of cloth inspection tooling,tooling on a piece of cloth for the PID control design.In addition to the work platform using ANSYS Workbench on a piece of cloth tooling dangerous conditions where the finite element analysis results.