A method is proposed to measure the process margin of the main steam inlet and outlet pipe of a nuclear power plant by using an industrial photogrammetry system. This method includes steps of preparation,image acquisi...A method is proposed to measure the process margin of the main steam inlet and outlet pipe of a nuclear power plant by using an industrial photogrammetry system. This method includes steps of preparation,image acquisition,image processing,and result analysis,as well as the final processing margin analysis,and so on. In particular,it suggests a specific method for target-point layout and design of shooting network for the main steam inlet and outlet pipe measurement,and then uses a method of sub-section photography and collation to measure the inner and outer surfaces of the nuclear power interface pipe. The machining tolerance analysis shows that the method can effectively test whether the machining tolerance data of the interface pipe's top surface,outer surface and the inner surface reach a critical value,which provides a reliable reference for the next step in this process,and it is a type of machining tolerance detection method worthy of popularisation.展开更多
According to the nuclear safety regulations, this paper discusses the mechanical analysis method for piping system. Peps program has advantages of stress analysis and evaluation for nuclear piping. First, this paper i...According to the nuclear safety regulations, this paper discusses the mechanical analysis method for piping system. Peps program has advantages of stress analysis and evaluation for nuclear piping. First, this paper introduces the Peps software, and discusses the process of stress analysis and evaluation for nuclear piping using the general finite element software;Secondly, taking nuclear class 2/3 piping system as an example, it uses Peps4.0 program to calculate the piping stress in variety of working conditions, such as weight, pressure, thermal expansion, earthquake, time-history force, and etc. Finally, the paper calculates the maximum stress and stress ratio according to the ASME.展开更多
基金Supported by the National Natural Science Foundation of China(No.41301598)the Open Fund Program of Henan Engineering Laboratory of Pollution Control and Coal Chemical Resource Comprehensive Utilization(No.502002-B07,502002-A-04)
文摘A method is proposed to measure the process margin of the main steam inlet and outlet pipe of a nuclear power plant by using an industrial photogrammetry system. This method includes steps of preparation,image acquisition,image processing,and result analysis,as well as the final processing margin analysis,and so on. In particular,it suggests a specific method for target-point layout and design of shooting network for the main steam inlet and outlet pipe measurement,and then uses a method of sub-section photography and collation to measure the inner and outer surfaces of the nuclear power interface pipe. The machining tolerance analysis shows that the method can effectively test whether the machining tolerance data of the interface pipe's top surface,outer surface and the inner surface reach a critical value,which provides a reliable reference for the next step in this process,and it is a type of machining tolerance detection method worthy of popularisation.
文摘According to the nuclear safety regulations, this paper discusses the mechanical analysis method for piping system. Peps program has advantages of stress analysis and evaluation for nuclear piping. First, this paper introduces the Peps software, and discusses the process of stress analysis and evaluation for nuclear piping using the general finite element software;Secondly, taking nuclear class 2/3 piping system as an example, it uses Peps4.0 program to calculate the piping stress in variety of working conditions, such as weight, pressure, thermal expansion, earthquake, time-history force, and etc. Finally, the paper calculates the maximum stress and stress ratio according to the ASME.
