| The explosion-proof container,as a more widely used protective part in the field of security,plays an important role in isolating and reducing the damage of dangerous goods to the outside world,and provides a powerful guarantee for the people's life and property safety.Due to the simple structure,low price,and close range manual opening,most of the cylinder shaped explosion-proof container in china can not withstand the anti explosion equivalent of the design,there is a great danger in the process of use.Aiming at the structure and malpractice of explosion-proof cylinder,the following aspects are studied:(1)Through the empirical formula and reverse design principle,the explosion ratio distance,the size of the shock wave overpressure in the closed explosion-proof cylinder and the required pressure relief area are calculated and evaluated,which provides the basis for the design of the sealing structure of the existing explosion-proof cylinder and the design parameters of the explosion proof cylinder cover.(2)Complete the structural design of the push pull explosion proof cylinder cover and port,and establish the three-dimensional model.Based on the dynamic coefficient method,the dynamic explosion impact force is converted to the equivalent static force.The static analysis of the model is carried out through the ANSYS 14.5 finite element analysis software,and the strength and stiffness of the structure under the effect of equal effect are studied.The explosion resistance test of explosion-proof cylinder was carried out.The test results showed that the port structure had serious failure.(3)Through the analysis and improvement of the inadequacies of the design of the port of the explosion-proof cylinder,the design of the explosion-proof cylinder cover is redesigned,and the optimization analysis of the explosion proof cylinder cover is further emphasized in the light of the principle of lightweight design.Through sensitivity analysis,the main factors that affect the strength and stiffness of the cover are screened out,and the optimum technological parameters are obtained by taking them as optimization variables.In the display dynamic program AUTODYN,the numerical modeling and parameter setting of the shell,explosion-proof shell,explosive and air after the optimization are carried out,and the dynamic response of the explosion-proof cylinder cover is observed more accurately through the computer numerical simulation.(4)The automatic opening and closing device of the explosion proof cylinder based on the machine and electric gas integrated control system is designed,and the theory andselection of the key working parts,such as the cylinder of the linear drive part,the main pressure element reversing valve and the rotary support of the rotating drive,are made and the data are provided for the following characteristic parameters of the modeling and Simulation of the control system.Support? Through the SIEMENS S7-300 software,the design scheme of the related control system based on fuzzy self tuning PID algorithm is determined.(5)Establish the mathematical model of the whole control system.Through the Matlab software,the simulation and analysis of the conventional PID control and fuzzy self-tuning PID control system are carried out respectively,and the step response of the master slave control system is compared and observed.The analysis results show that the control system based on the fuzzy self-tuning PID control system is stable and no overshoot,and the error of the control system is not overadjusted.The basic control is about 2%,which meets the theoretical design requirements and initially completes the prototype construction. |
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