| This paper carried on analysis and research in theory and practice, based on the summaries of the present status and development of refuge chamber at home and abroad. In theory, this paper makes analysis on structure statics, impact dynamics and thermal protection performance of the structure of refuge chamber on the basis of finite element and kinetic theory. Built the parameter model by Pro/E software, and carried on the structure optimization analysis for refuge chamber combined with ANSYS Workbench, laying the groundwork for improvement of refuge chamber’s structure. In practice, we take a reality test of the comprehensive performance of refuge chamber, the protection performance and sustain ability of refuge chamber under the mine disaster environment are test. The main content is as follows.1. Designed the structure of the chamber body that a combination of square and round body, and the static stiffness and strength analysis of refuge chamber structure are taken by the ANSYS Workbench. The stress contour and deformation contour are gotten by the statics analysis of the structure. Then the analysis and evaluation to the results are carried on, the points of the maximum deformation and stress concentration are clear under0.3MPa, which is prepared for the subsequent optimization design.2. On the basis of statics analysis, took structure optimization analysis of refuge chamber. Using ANSYS Workbench Design Exploration function, analyzed the influence of different parameters on the deformation, stress of the refuge chamber structure, and provided a basis for structure optimization design of refuge chamber. Carried on the preliminary optimization of the size of the refuge chamber structure, and compared the stiffness and strength of the refuge chamber structure before and after optimization.3. Impact resistant performance analysis was carried out on the structure of refuge chamber. Took the numerical simulation analysis of the influence of the chamber body from mine gas explosion by AUTODYN software, and simplified history curves of the pressure on the chamber body to make shock resistance analysis in case. Then impact resistant dynamic response of the refuge chamber is analyzed on the basis of LS-DYNA, the size of the stress and deformation of the body and the flange is taken while the body is under the impact load.The results show that the optimized body conformed to the requirements of the antiknock. 4. Based on ANSYS Workbench, thermal protective performance analysis is carried out on the refuge chamber. Heat insulation structure is present, then the way of two kinds of heat insulation structure is analyzed in theoretical, and use Transient Thermal module to simulate the temperature change inside the refuge chamber to get history curves to provide theoretical basis for the research of the internal systems.5. Comprehensive performance test of refuge chamber is carried on. Put to manned test by simulated the environment of high temperature of coal mine, then observed the change of parameters inside the refuge chamber, investigated the live performance and thermal protection performance of refuge chamber. According to the test, the heat insulation performance is good the actual gas use is clear and the activities of the staff in the chamber are understood.In conclusion, this paper mainly completed the structure design of refuge chamber which is combination of square and circle as a new structure. Then the static analysis was carried on, and the body size parameters were optimized on the basis of this. Using explicit dynamic software, the antiknock performance analysis was made to the optimized structure. Finally, the simulation analysis and test research of the insulation perfonnance of the body was carried out and good results were shown. |
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