Pressure vessel safety evaluation and risk early warning method based on digital twinning

Abstract

The invention relates to a pressure vessel safety evaluation and risk early warning method based on digital twinning. The method comprises the following steps: S1, determining a damage mode of a pressure vessel; s2, designing an overall scheme of safety evaluation and risk early warning of the pressure vessel; s3, simplifying the physical model of the pressure vessel based on the designed overall scheme, and establishing a simplified physical model; s4, load working condition parameters of the pressure vessel in actual service are obtained; s5, determining material performance parameters of the pressure vessel component; s6, establishing a pressure vessel safety evaluation and risk early warning digital twinborn model; s7, obtaining a full-field damage distribution cloud picture of the pressure vessel component; and S8, comparing the whole-field damage distribution cloud picture with the strength requirement of the pressure vessel component material, if the strength requirement is met, performing safety evaluation at the next time node according to the subsequent need of a user, if the strength requirement is not met, outputting a pressure vessel risk early warning.

Description

technical field [0001] The present invention relates to the field of safety evaluation and risk early warning of pressure vessels, and more specifically relates to a method for safety evaluation and risk early warning of pressure vessels based on digital twins. Background technique [0002] Pressure vessels are widely used in petroleum, chemical, nuclear power, thermal power, aviation, aerospace and other industries, and are usually affected by harsh service environments such as high temperature and high pressure, as well as extreme media such as corrosive and toxic media. It can be predicted that there are many potential major damage modes during the service of pressure vessels. Once these components fail, it will cause huge economic losses and even cause environmental and social problems. Therefore, the safety evaluation and risk warning of pressure vessels has always been an important issue facing the pressure vessel industry. [0003] Existing pressure vessel safety as...

AI Technical Summary

Problems solved by technology

[0003] Existing pressure vessel safety assessment and risk warning technologies are mostly based on off-line data or design data, which cannot realize the system integration and simultaneous calculation of high-temperature structural safety assessment methods and pressure vessel service parameters, so it cannot reflect the damage of pressure vessels in service in real time evolutionary behavior

At the same time, the high-risk parts of the pressure vessel cannot be displayed in real time according to the damage evolution of the pressure vessel, and it is difficult to realize the early warning of the service risk of the pressure vessel components

The above problems all restrict the accurate acquisition of the damage evolution state of the pressure vessel by engineers, and cannot fully guarantee the long-term safe service of the pressure vessel

[0004] Although there are technical contents such as real-time data acquisition and online display in the existing mechanical engineering field, these applications do not realize the direct connection between real-time data acquisition and life evaluation methods, nor do they embed finite element analysis, safety evaluation methods and other related content

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