Aiming at the construction difficulty in the installation of main equipment of primary loop for high temperature gas-cooled reactor demonstration power station, this paper carried out design and application research of main equipment adjustment device. Through the principle of combining hydraulic lifting with jacking, the overall scheme is compared and selected, the design principle is determined, the design scheme is completed, and the lifting load and operation accuracy requirements for adjustment of the heavy pressure vessel cylinder, the metallic reactor core casing and the steam generator are meet. The results of the thesis have been applied to high-temperature gas-cooled reactor demonstration power station, solving the need for precise adjustment of primary equipment of the high-temperature gas-cooled reactor demonstration power station, and provides ideas and application experience for adjustment of heavy equipment in other nuclear power plants.
Finite element analysis software is the main tool for the analysis and verification of complex lug. The commercial software represented by ANSYS occupies the main position in the field of finite element. Based on the open source finite element software SALOME and Code_Aster, using Python language and Pyqt5 framework, a lug simulation system is developed, which has the functions of guide type lug rapid modeling, automatic high-quality mesh generation, automatic acquisition of lug linearization path, automatic evaluation and report issue. The system is completely independent and controllable and replaces the conventional method of manually defining the stress linearization path, which effectively improves the evaluation efficiency of the lug. At the same time, the calculation results are compared with the ANSYS calculation results, and the error is less than 3%, which meets the accuracy requirements.
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