防爆袋式除尘器设计要点

防爆袋式除尘器经常应用于煤粉、硅粉、铝粉、淀粉、焦粉等易燃烧、爆炸的场合,为防燃、防爆安全生产,袋式除尘器防燃、防爆设计至关重要。文中介绍了防爆袋式除尘器设计要点及配套件选用注意事项以及爆炸的防范技术措施。     

基板温度对电热爆炸喷涂制备粘结层性能的影响

基板温度分别为室温、100和200 ℃时,采用电热爆炸喷涂技术在IC10合金表面制备NiCoCrAlY合金粘结层.利用扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD),对热循环前后的粘结层的组织形貌、化学成分及相进行分析.结果表明,基板温度对电热爆炸喷涂技术所制备NiCoCrAlY合金粘结层有明显的影响,随着基板温度的升高,所制备的粘结层与基体界面结合良好,表面粗糙度减小.在1050 ℃热循环后粘结层表面生成了Al2O3氧化层,起到了保护基体的作用.     

天然纤维素蒸汽闪爆改性对其长支链酯合成影响

采用蒸汽闪爆技术对天然纤维素进行改性,并利用改性后的纤维素、乙酸酐和脂肪酸合成长支链纤维素酯。结果表明,蒸汽闪爆处理后纤维素葡萄糖环单元三个羟基的可及性及相对反应性能得到提高,同时缩短了反应周期。     

Movement of Rock Blocks during Large-Scale Underground Explosions. Part II: Estimates by Analytical Models, Numerical Calculations, and Comparative Analysis of Theoretical and Experimental Data

The calculation results are cited for the parameters of block movement under the large-scale dynamic action. The estimates by analytical models and the results of numerical calculations are compared with the experimental data. This made it possible to interpret the data and determine the most probable mechanism of originating the movements along the interblock boundaries.     

Movement of Rock Blocks During Large-Scale Underground Explosions. Part I: Experimental Data

The instrumental measurements are cited for residual displacements and strains in the rock mass under action of underground nuclear explosions. The main attention is given to the problems of strain localization in the vicinity of faults and large cracks bounding the rock blocks with the sizes of tens and hundreds of meters. As the distance changes, the regularities of variation in interblock displacement amplitude are revealed, and the characteristic dimensions of consolidated block conglomerates moved due to a large-scale explosion are estimated.     

Numerical computation algorithm of explosion equations and thermodynamics parameters of mine explosives

A new numerical algorithm is presented to simulate the explosion reaction process of mine explosives based on the equation of state, the equation of mass conservation and thermodynamics balance equation of explosion products. With the affection of reversible reaction of explosion products to explosion reaction equations and thermodynamics parameters considered, the computer program has been developed. The computation values show that computer simulation results are identical with the testinq ones.     

瓦斯爆炸事故树模糊数学分析法研究

在计算瓦斯爆炸事故概率时 ,针对传统事故树分析中 ,对不精确事件不能够得到有效地处理 ,本文运用模糊概率的相关知识结合事故树来进行行之有效的处理。这无疑将使得对矿山瓦斯爆炸事故的概率计算更可靠和准确 ,同时也使得传统的事故树分析法得以有效地发展和延伸     

陆上油气田井场的电气防爆技术

本结合我国陆上石油、天然气田井场的现实情况,介绍石油、天然气的燃爆特性,着重介绍油气田井场爆炸危险场所区域划分的方法,正确选择合适的防爆电气设备以及正确的安装、使用和维护,保证油气田井场现场作业的防爆安全。     

燃油加油机防爆安全性能国家监督抽查结果的质量分析

介绍了2000年第4季度燃油加油机产品防爆安全性能国家监督抽查的结果,并对抽查检验结果,存在的主要质量问题及原因等进行了综合分析和评价。     

水中爆炸气泡脉动周期的试验研究

通过工程试验研究 ,观测到水下爆炸引起的地基及水中结构物的二次地震波现象。借助已有的水下爆炸理论 ,分析试验结果 ,总结了地基及结构振动的规律 ,指出二次振动现象与水中爆炸产生的气泡脉动有关。试验特别给出了紧贴壁面爆炸时气泡脉动的规律及其脉动周期的计算结果。气泡脉动诱发的结构物二次振动的幅值与第一次振动的幅值相近 ,其危害性应引起重视。