矿用救生舱舱体结构设计及抗爆性能分析

发布时间：2018-03-09 15:04

本文选题：救生舱　切入点：结构设计　出处：《西安科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：目前，矿用救生舱关键技术研究已经成为国内外专家学者热点关注的工程科学问题。如何保证救生舱舱体抗爆性能则是重中之重的问题，，也是设计标准建立的理论依据和基本原则。虽然国外在救生舱舱体设计方面已经有成功应用的案例，但我国煤矿井下环境具有自身特点，进口救生舱舱体价格比较昂贵，所以我国救生舱舱体的自主研发就具有重要意义。但是救生舱舱体研究方面缺乏一定的设计理论依据和设计标准，使得整个开发过程需要进行设计-数值模拟试验-物理模拟试验-修改设计多次反复探索，造成救生舱舱体研发周期长、成本高、危险性大。因此，本文在对国内外救生舱舱体形状及结构分析的基础上，设计出适合我国煤矿井下实际环境需求的救生舱舱体，并利用有限元ANSYS软件对设计的救生舱舱体进行数值模拟计算及抗爆性能对比分析，最终得到最优的救生舱舱体结构，为较高抗爆性能和低成本的救生舱舱体研发提供一定的理论依据。主要的研究内容如下： (1)在对目前国内外矿用救生舱舱体研究现状、舱体形状结构及有限元数值模拟方法分析基础上，建立符合我国煤矿瓦斯爆炸实际情况的救生舱舱体抗爆性能数值模拟计算方案，包括救生舱舱体几何模型、材料模型、单元类型、载荷大小及施加方式； (2)根据国内外各种形状救生舱舱体抗爆性能及其适用性，对方形和拱形两种形状救生舱舱体进行初步设计和数值模拟计算，得到应力应变分布规律，并进行抗爆性能安全性对比分析，得出在同等参数条件下方形救生舱舱体具有较好的抗爆性能； (3)针对目前救生舱舱体逃生窗放置在舱体中间部位造成有毒气体进入生存舱的问题，以及瓦斯爆炸对救生舱舱体整体抗爆性能、救生舱逃生窗抗爆性能和逃生线路产生影响等问题，本文基于方形救生舱舱体形状对逃生窗分别在救生舱过渡舱、生存舱中部、生存舱后部等几种救生舱舱体结构进行设计，并利用ANSYS软件对设计的几种救生舱舱体结构进行数值模拟计算及抗爆性能安全性分析，通过对比数值模拟分析结果得到最优的救生舱舱体结构； (4)对确定的最优救生舱舱体结构进行不同冲击载荷及不同参数下的数值模拟计算及抗爆性能安全性分析，得到一系列满足不同抗爆性能要求的救生舱舱体结构设计参数推荐值，为高抗爆性能和低成本的救生舱舱体研发提供一定理论依据。
[Abstract]:At present, the research on key technology of mine lifebuoy has become an engineering scientific problem that experts and scholars at home and abroad pay close attention to. How to ensure the anti-explosion performance of lifebuoy cabin is the most important problem. It is also the theoretical basis and basic principle for the establishment of design standard. Although there have been successful cases in the design of lifebuoys in foreign countries, the underground environment of coal mines in our country has its own characteristics, and the imported lifebuoys are more expensive. Therefore, the independent research and development of the lifebuoy cabin in our country is of great significance. However, there is a lack of theoretical basis and design standards for the research of the lifebuoy cabin. It makes the whole development process need to carry on the design-numerical simulation test-physical simulation test-modify the design many times to explore, causes the lifebuoy cabin body research and development cycle to be long, the cost is high, the danger is high, therefore, Based on the analysis of the shape and structure of the lifebuoy cabin at home and abroad, this paper designs a lifebuoy cabin suitable for the actual environmental requirements of the coal mine in our country. Finally, the optimal structure of the lifebuoy cabin is obtained by using the finite element ANSYS software to carry out numerical simulation calculation and comparative analysis of the anti-explosion performance of the designed lifebuoy cabin. The main contents of this paper are as follows: (1) to provide some theoretical basis for the research and development of lifebuoys with high anti-explosion performance and low cost. 1) based on the analysis of the present research situation, the shape and structure of the cabin and the finite element numerical simulation method at home and abroad, a numerical simulation calculation scheme for the anti-explosion performance of the lifebuoy cabin is established, which accords with the actual situation of coal mine gas explosion in China. Including the lifebuoy cabin geometry model, material model, unit type, load size and application mode; (2) according to the anti-explosion performance and its applicability of lifebuoys of various shapes at home and abroad, the preliminary design and numerical simulation of the lifebuoys with square and arched shapes are carried out, and the distribution of stress and strain is obtained. By comparing and analyzing the safety of the anti-explosion performance, it is concluded that the square lifebuoy cabin has better anti-explosion performance under the same parameters. (3) aiming at the problem of poisonous gas entering the survival cabin caused by the placement of escape windows in the middle of the cabin at present, as well as the overall anti-explosion performance of the lifebuoy cabin by gas explosion, In this paper, based on the shape of the square lifebuoy cabin, the structure of the escape window is designed in the transition cabin, the middle part of the survival cabin, the rear part of the survival cabin, and so on. The numerical simulation calculation and the safety analysis of anti-explosion performance of several lifebuoy cabin structures are carried out by using ANSYS software, and the optimum lifebuoy cabin structure is obtained by comparing the results of numerical simulation analysis. 4) numerical simulation and safety analysis of the optimum lifebuoy cabin structure under different impact loads and different parameters are carried out, and a series of recommended values for the structural design parameters of the lifebuoy cabin which meet the different requirements of anti-explosion performance are obtained. It provides a theoretical basis for the research and development of high anti-explosion and low-cost lifebuoys.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD774

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