普通反拱形爆破片爆破压力影响因素研究

发布时间：2018-03-09 00:02

本文选题：反拱形爆破片　切入点：爆破压力　出处：《华东理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：爆破片是一种保护压力容器安全的安全泄放装置,其在设定压力下准确爆破至关重要。本论文针对反拱形爆破片,搭建了反拱形爆破片性能测试平台,通过实验与数值模拟相结合的方式研究了拱高、热处理、倒角对反拱形爆破片爆破压力的影响,这对反拱形爆破片的研究与生产制造具有指导意义。本文的主要研究内容及成果如下:(1)搭建了能实时记录位移与压力的反拱形爆破片成型与爆破实验平台。通过开展成型与爆破试验研究了预拱高度与成型压力、拱高与爆破压力的关系,研究得到了反拱形爆破片成型压力计算公式与最佳成型高径比。(2)通过对316L反拱形爆破片固溶处理实验,分析了固溶处理温度、保温时间对反拱形爆破片爆破性能的影响,并参照固溶处理温度、保温时间对316L材料性能的影响,分析了反拱形爆破片固溶处理的特点。(3)采用数值模拟技术对典型反拱形爆破片的临界失稳状态进行了应力应变分析,并研究了圆角半径对爆破片应力分布和失稳压力的影响。研究表明:圆角半径取在0.4mm-0.8mm范围可取得较好的应力分布和失稳位置。
[Abstract]:Blasting disc is a kind of safe release device to protect the safety of pressure vessel, and it is very important for accurate blasting under set pressure. In this paper, an anti-arch blasting disc performance test platform is built for anti-arch blasting disc. The effects of arch height, heat treatment and chamfer on the blasting pressure of the reverse arch blasting disc are studied by means of the combination of experiment and numerical simulation. The main research contents and results of this paper are as follows: 1) the experimental platform for the formation and blasting of reverse arch blasting disc is built, which can record displacement and pressure in real time. The pre-arch height and molding pressure were studied by means of molding and blasting tests. The relation between the arch height and the blasting pressure, the formula of forming pressure and the optimum ratio of height to diameter of the reverse arch blasting disc are obtained. The solution treatment temperature is analyzed through the experiment on the solution treatment of the 316L reverse arch blasting disc. The influence of heat preservation time on the blasting performance of reverse arch blasting disc, and the effect of solid solution treatment temperature and heat preservation time on the properties of 316L material, In this paper, the characteristics of solid solution treatment of reverse arch blasting disc are analyzed. The critical unstable state of typical reverse arch blasting disc is analyzed by numerical simulation technique. The effect of circular radius on the stress distribution and unstable pressure of blasting disc is studied. The results show that the better stress distribution and unstable position can be obtained when the radius of circular corner is 0.4mm-0.8mm.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH49

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