Objective  Digital twin technology and Internet of Things (IoT) technology have been widely used in structural health monitoring, but their application in special equipment is still in its infancy.

  Methods  In view of the safety monitoring requirements for the whole life cycle of pressure containers, this paper realizes the temperature data acquisition of the structure through IoT and uses the VUE + Flask framework to write a software monitoring system. The container model is established via the Three.js library to realize the real-time driving of the temperature data of the digital twin model. Additionally, in order to test the feasibility of the twin system, relevant temperature experiments are carried out based on ANSYS simulation.

  Results  The experiment proves that the key digital twin technology based on the pressure container structure can realize functions such as intelligent monitoring, scene perception, digital mining and information feedback.

  Conclusion  The system architecture proposed herein has good reference value, and the deep integration of IoT technology and digital twin technology can contribute to the development of China’s strategic high-end products and major key equipment.