平板环向开缝型爆破片爆破性能研究

以相似理论为基础，对影响平板环向开缝型爆破片爆破压力的因素进行无因次分析，归纳出爆破压力的计算公式，用以指导爆破片的设计。实验结果表明，公式的计算值与实验值相比误差在±５％以内，完全满足工程应用的要求。     

密封膜对正拱开缝型爆破片爆破压力的影响

以多层式爆破片爆破压力计算原理和普通正拱型爆破片爆破压力计算公式为基础 ,推算出正拱开缝型爆破片爆破时密封膜所占爆破压力的比例 ,从而为确定正拱开缝型爆破片强度膜的材料厚度和开缝尺寸提供了重要依据。     

正拱开缝型爆破片爆破性能有限元分析

采用有限元模拟方法,对正拱开缝型爆破片爆破压力进行了研究,探讨了爆破压力与预拱高度、孔间桥长之间的关系。正拱开缝爆破片爆破压力与相对预拱高度成线性关系。正拱开缝型爆破片的承载能力主要由桥长来决定。爆破压力跟桥长在数量上成正比。     

关于塑料粉尘料仓爆破片设计的探讨

简述塑料粉尘料仓泄爆装置的重要性;阐述塑料粉尘料仓爆破片工作原理和主要参数,从泄压面积的计算、火焰传播和压力传播、.爆破片的安装位置、反冲力等方面探讨爆破片的设计要点;通过具体工程实例加深对设计过程的认识。     

爆破片装置的正确选择与使用

介绍了爆破片的结构类型及基本特性，从选用爆破片的爆破压力、泄放面积、使用温度及适用介质等几个重要参数出发，探讨了爆破片装置的正确选择，并提出了安全使用爆破片应注意的问题。     

国内外标准爆破片爆破压力允差对比分析

爆破片爆破压力允差是爆破片的一个重要性能参数指标,其值的确定既要考虑到爆破片制造加工的可能性,又要兼顾安装爆破片设备的安全可靠性。对国内外相关标准对爆破压力允差的确定方法进行了对比分析。     

爆破片装置泄放量的计算——国外标准分析探讨

介绍了国外通用爆破片装置标准及其泄放量计算公式,发现公式计算结果与实际泄放量存在一定的偏差。分析了爆破片泄放量的影响因素,为完善超压泄放公式提供必要补充。     

粉尘爆炸泄压面积计算

随着粉料处理工业的日益发展,人们逐渐认识到许多粉尘是具有爆炸危险的。为保护设备及人员安全,需要在处理粉料的设备上安装泄爆装置(如防爆门或爆破片)。在选择泄爆装置时,经常碰到泄压面积大小的计算问题,因此重点介绍粉尘泄爆原理及泄压面积的计算。     

预测爆破片爆破压力的一种新方法

将人工神经网络用来预测爆破片爆破压力，并用偏相关指数表征各影响因素对爆破压力的影响程度。结果表明，用人工神经网络对爆破压力的预测值与实测值吻合较好，根据偏相关指数绝对值的大小来判别影响爆破压力的主要因素亦得到满意的结果。     

正拱带槽爆破片爆破性能有限元分析

采用有限元模拟方法,对正拱带槽型爆破片爆破压力进行了研究,探讨了剩余槽厚、槽顶部未贯通距离以及槽底部至端面距离对爆破压力的影响规律。结果表明:爆破压力随剩余槽厚的增加线性增大。随着槽顶端未贯通距离的增加,爆破压力首先迅速增加,然后不变,最后缓慢增加。减弱槽底部至端面距离对爆破压力影响可以忽略。     

Pneumatic bursting characteristics of plastics films

The bursting strength and inflated deflection of linear low density polyethylene (LLDPE), oriented polypropylene (OPP), flexible poly(vinyl chloride) (PVC), poly(ethylene terephthalate) (PET), and polyurethane (PUR) films of different thicknesses were investigated with the pneumatic bursting method. The study showed the bursting air pressure is directly proportional to the thickness of LLDPE, OPP, and PET films. The effect of different membrane diameters on the change of the bursting properties in OPP and PUR film was also investigated. The results showed that the bursting properties are inversely proportional to the membrane diameter. Furthermore, biaxial stress-strain exerted on the pole region of the tested films was studied. The results denoted that the relationship between the biaxial and uniaxial tensile stress-strain was considered for two types of film: (1) Film that presented an isotropic tensile behavior showed that the tangential stress-strain is higher than the tensile stress-strain. (2) Film that presented an anisotropic tensile behavior showed that the tangential stress-strain is determined by the weaker tensile stress-strain values between two directions.     

Aging and bursting bubbles in trace-contaminated water

The rise speeds and top jet drop ejection heights of rising and bursting bubbles in water are measured as a function of bubble age. Equivalent spherical diameters range from 0.08 <d < 0. 125 cm. Various types of relatively surfactant-free water are used. Both rise speeds and top jet drop ejection heights decrease with bubble age. This is due to adsorption of surface-active materials on the bubble surface which increases the rigidity of the surface and decreases its surface free energy. In general, terminal values of rise speed and ejection height are not reached at the same bubble age. The ages at which these terminal values are reached are characteristically greater for larger bubbles in a given water sample. These ages are also characteristically greater for bubbles of a given size as the concentration of surface-active material in the water decreases.     

水泥窑纯低温余热发电项目余热锅炉爆管原因分析及处理办法

以某水泥窑纯低温余热发电项目中窑尾SP余热锅炉蒸汽发生器换热管发生爆管(漏水)事故为例,根据爆管发生的位置和形态,首先确认是锅炉水腐蚀造成。在此基础上重点介绍了余热锅炉常见的5种腐蚀类型,最终确认了此次爆管具体是由沉淀物下腐蚀所致,并介绍了这类故障的解决方案。     

玻璃纤维过滤布胀破强度的研究

介绍胀破强度试验方法和基本原理,建立了玻璃纤维过滤布拉伸断裂强力和胀破强度之间的函数关系.引入计算因子K,用于计算胀破强度.     

多层超高压容器爆破压力研究

本文给出一种利用材料真实应用力和真实应变关系曲线，计算多层超高压容器爆破压力的塑性不稳定解法。与现有爆破压力公式分析比较表明，该解法具有相当高的精度，且计算方便，可用于工程设计计算。     

爆破片装置CAD参数化绘图系统的开发

以 Auto CAD2 0 0 0为平台 ,运用 Visual L ISP语言开发了爆破片装置参数化绘图系统。该系统可按照输入的设计参数自动绘制爆破片装置的装配图和零件图并自动标注尺寸 ,大大加快了设计速度 ,提高了设计质量 ,具有较高的实用价值。以L C型爆破片装置为例 ,给出了本系统设计结果的装配图     

Characteristics of droplets generated by bubble bursting from chromic acid solutions

The effects of electrolyte concentration and gas flow rate on the characteristics of droplets generated from bubbles bursting on the surface of CrO₃ solution were studied with an experimental bubbling system. The experimental conditions included two electrolyte concentrations, 125 and 250 g l^-1 of CrO₃, and three flow rates of sparging air in the range of 4–8 l min^-1. A cascade impactor collected droplet samples for chemical analysis. A laser aerosol spectrophotometer and an aerodynamic particle sizer were employed simultaneously to measure the number concentration and size distribution of the droplets. A layer of foam formed on the liquid surface under all experimental conditions studied except at the gas flow rate of 4 l min^-1 in 125 g l^-1 CrO₃ solution. Foams had a significant effect on the characteristics of droplets generated from bursting bubbles. At identical gas flow rate and electrolyte concentration, the formation of foams led to a reduction in number concentration of droplets larger than 10 μm in aerodynamic diameter and a lower concentration of airborne Cr(VI). In the ranges of gas flow rate and electrolyte concentration tested, the results showed that the airborne Cr(VI) mass concentration increased significantly with gas flow rate and slightly with electrolyte concentration in the presence of foams. The results obtained in the present study should have applications in the emission control of Cr(VI)-containing droplets in chromium electroplating processes.     

液化石油气燃爆泄放特性的实验研究

利用５２４Ｌ球形容器对液化石油气燃爆泄放特性进行了研究，其试验结果可为从事安全工程设计的技术人员提供参考。     

ABS工程塑料管爆破压力测试研究

设计、制造了塑料管常温及高温水压爆破测试装置 ,对ABS管进行了不同温度下的水压爆破试验 ,得到了ABS管的爆破压力。数据经分析处理后 ,绘制出ABS工作压力与温度的设计曲线 ,该曲线可应用工程设计 ,也可为我国制订ABS管和管件标准提供依据。     

合成氯化氢循环液槽爆裂事故教训

对内蒙古亿利化学工业有限公司烧碱分厂一次高纯盐酸循环槽爆炸事故进行分析,并介绍了由此进行的工艺改造情况。