Design And Research Of Digital Twin Aided Deep In Situ Thermal Insulation Coring System

The successful development of in-situ coring equipment for deep strata is the basis for exploring the laws of in-situ rock mechanics and constructing the theory of deep rock mechanics,and is the forerunner of the "four deep and one vertical" science and technology strategy in China.Deep rock in-situ coring equipment design is a typical complex product design,with long design cycle,complex design process,difficult to obtain accurate design requirements,high requirements for prototype verification experimental environment,involving multidisciplinary cross,coupling and other design and engineering problems,which makes the design and development of deep equipment and other complex products face unprecedented challenges.In recent years,with the rapid development of Internet and 5th generation communication technology,the application of intelligent manufacturing and digital design in manufacturing industry is common,and the production mode of manufacturing industry is changing to intelligent.As the product of modern Internet,digital twin technology has the functions of high fidelity visual model design and realtime data acquisition and transmission.Combined with the simulation application platform,Combined with the simulation application platform,it is helpful to build the virtual link between physical experiment platform and twin model,form the interactive application of real-time data and virtual environment,realize the virtual verification and visual display of complex product innovative design,accelerate the effective iteration of complex product design process and enhance the design expression of users.In this paper,combined with innovative design method and digital twin technology,in the initial stage of conceptual design,innovative design method,theory and tools are used to assist designers to quickly form conceptual design scheme,build corresponding physical pre research experimental platform,and carry out experiments to collect and process key data.According to the real-time collected data,the corresponding dynamic response visualization is formed,and the design process of complex products is visually displayed to users;at the same time,the experimental data are taken as the boundary conditions of digital twin,and the experimental conditions which are difficult to realize in the laboratory are simulated by computer.The results of experiment and simulation are compared and optimized to systematically guide the product design iteration and form data and method support for the evolution process of the scheme.The main contents of this paper are as follows:(1)In view of the complexity of complex product design,combined with innovative design method and digital twin technology,digital technology is used in the process of product design for scheme performance and technical verification,so as to increase users' understanding of design scheme and realize effective iteration of design scheme.(2)Taking the conceptual design of deep core in-situ thermal insulation system as an example,the requirements of deep core in-situ thermal insulation system are obtained and analyzed.According to the use constraints of equipment in deep in-situ environment,the design requirements are determined by using ad design axiom and FBS model in innovative design method,and then the preliminary functional requirements model and overall conceptual design structure of the system are obtained by using TRIZ.(3)The physical pre research experimental platform for in-situ thermal insulation scheme of deep core was built.According to the innovative desig method to get the best active insulation design scheme,and according to the actual use of 140 MPa,150 ? working requirements,design and purchase the corresponding experimental equipment,carry out the corresponding pre research experiment in the laboratory,and preliminarily verify the feasibility of the experimental scheme.(4)Based on the physical pre research scheme of deep core in-situ insulation system,the corresponding digital twin model is constructed.Lab VIEW graphical programming software,ANSYS Workbench simulation software and ni- usb-6002 data acquisition card are used as the main software and hardware platform.According to the requirements of active thermal insulation function,the digital twin is constructed.Combined with the actual collected data and digital analog working conditions,the virtual communication bridge between user, product and designer is formed,and the auxiliary design and scheme evolution guidance are formed for the design scheme.