共查询到19条相似文献，搜索用时 140 毫秒
1.
应用随机-模糊概率模型,分析了钢制压力容器初始静强度在压力试验和正常操作时的可靠性。对于按我国标准设计的钢制压力容器,得到其初始静强度在压力试验和正常操作时的可靠度系数,初步解决了把可靠性理论和方法应用于压力容器工程设计的一个基础问题。 相似文献
2.
3.
本文以预防、降低和消除化工行业中密封压力容器爆炸事故为目标 ,从引发事故的成因分析入手 ,运用事故树工具求取最小割、径集 ,在此基础上引入各种相对重要度 ,确定控制事故发生的关键因子 ,并讨论管理因素对突发性事故概率的影响 ,为企业的安全管理提供科学依据 相似文献
4.
特种设备(承压类)安全附件的选择——安全阀形式和口径选择 总被引：1，自引：0，他引：1
从安全阀重要性谈,介绍安全阀加类型、选用原则,重点介绍锅炉用安全阀和压力容器用安全阀的排放量计算和公称通径选择。 相似文献
5.
马秉骞 《兰州石化职业技术学院学报》2006,6(2):7-8
按GB150《钢制压力容器》的规定,圆筒形壳体、球形壳体和锥形壳体的壁厚都可按中径公式进行计算,且对圆筒形壳体和球形壳体给出了公式应用的限定条件,但对锥形壳体却没有给出限定条件.通过对圆筒形壳体和锥形壳体薄膜应力及壁厚计算公式的分析和比较,提出了锥形壳体按中径公式计算壁厚时的限定条件. 相似文献
6.
本文介绍了萍钢锅炉压力容器安全管理现状,应用标准化分析了与安全管理的相互关系和锅炉压力容器常见事故的影响因素及对策,指出推行标准化安全管理模式是钢铁企业锅炉压力容器安全运行的有效保障。 相似文献
7.
季维英 《南通职业大学学报》2005,19(4):69-71
针对压力容器的常规设计存在的不足，应用可靠性理论中的强度一应力干涉模型，将可靠性方法运用于压力容器设计，提出了可靠性设计目标，阐述了设计的具体步骤，并针对强度和应力分布的实际情况，给出了设计实例。 相似文献
8.
9.
分析边缘应力的性质,特点及其与薄膜应力的区别联系,指出边缘应力与压力容器强度的关系,提出了容器设计中处理边缘应力的几种方法和具体措施。从而解决容器设计中一个不容忽视的重要问题。 相似文献
10.
GB150-1998《钢制压力容器》第10.4.2中规定:(1)用碳素钢、16MnR钢板冷成形的圆筒,如名义厚度大于圆筒内径的3%;(2)其它低合金钢板冷成形的圆筒,如名义厚度大于圆筒内径的2.5%,其圆筒应于成形后进行热处理。该版本的 相似文献
11.
压力容器在进行压力试验时，须先对在试验压力作用下的强度进行理论校核，合格后才能进行实际操作。通过综合分析和实例验证得出：在液压试验时，对碳素钢和低合金钢容器当PL≤0．19p、对高合金钢容器当PL≤0．1p时，则不必校核压力试验时的强度，可直接进行液压试验的实际操作；对作气压试验的容器，无论何种情况都不必校核压力试验时的强度，可直接进行气压试验的实际操作。 相似文献
12.
Cun-jian MIAO Jin-yang ZHENG Xiao-zhe GAO Ze HUANG A-bin GUO Du-yi YE Li MA 《浙江大学学报(A卷英文版)》2013,14(1):31-37
Cold-stretched pressure vessels from austenitic stainless steels(ASS) are widely used for storage and transportation of liquefied gases,and have such advantages as thin wall and light weight.Fatigue is an important concern in these pressure vessels,which are subjected to alternative loads.Even though several codes and standards have guidelines on these pressure vessels,there are no relevant design methods on fatigue failure.To understand the fatigue properties of ASS 1.4301(equivalents include UNS S30400 and AISI 304) in solution-annealed(SA) and cold-stretched conditions(9% strain level) and the response of fatigue properties to cold stretching(CS),low-cycle fatigue(LCF) tests were performed at room temperature,with total strain amplitudes ranging from -.4% to -.8%.Martensite transformations were measured during the tests.Comparisons on cyclic stress response,cyclic stress-strain behavior,and fatigue life were carried out between SA and CS materials.Results show that CS reduces the initial hardening stage,but prolongs the softening period in the cyclic stress response.Martensite transformation helps form a stable regime and subsequent secondary hardening.The stresses of monotonic and cyclic stress-strain curves are improved by CS,which leads to a lower plastic strain and a much higher elastic strain.The fatigue resistance of the CS material is better than that of the SA material,which is approximately 1?03 to 2?04 cycles.The S-N curve of the ASME standard for ASS is compared with the fatigue data and is justified to be suitable for the fatigue design of cold-stretched pressure vessels.However,considering the CS material has a better fatigue resistance,the S-N curve will be more conservative.The present study would be helpful in making full use of the advantages of CS to develop a new S-N curve for fatigue design of cold-stretched pressure vessels. 相似文献
13.
This paper proposes a theoretical method using finite element analysis （FEA） to calculate the plastic collapse loads of pressure vessels under internal pressure, and compares the analytical methods according to three criteria stated in the ASME Boiler Pressure Vessel Code. First, a finite element technique using the arc-length algorithm and the restart analysis is developed to conduct the plastic collapse analysis of vessels, which includes the material and geometry non-linear properties of vessels. Second, as the mechanical properties of vessels are assumed to be elastic-perfectly plastic, the limit load analysis is performed by employing the Newton-Raphson algorithm, while the limit pressure of vessels is obtained by the twice-elastic-slope method and the tangent intersection method respectively to avoid excessive deformation. Finally, the elastic stress analysis under working pressure is conducted and the stress strength of vessels is checked by sorting the stress results. The results are compared with those obtained by experiments and other existing models. This work provides a reference for the selection of the failure criteria and the calculation of the plastic collapse load. 相似文献
14.
对国内外正火型高强度压力容器用钢的发展情况进行了调研,分析了国内正火高强度压力容器用钢的研制思路,并对国内外相关标准进行解析,提出了新一代高韧性正火高强度压力容器用钢的研制构想。同时对新钢材的市场应用前景及应用领域进行了初步的探讨。 相似文献
15.
依据《固定式压力容器安全技术监察规程》中的压力容器分类图,采用EXCEL进行算法编程,完成了不同形状容器的容积算法、压力容器PV值算法、介质组别区分算法及压力容器分类逻辑算法的编制,可在输入压力容器的工作介质、直径、长度、设计压力后,对压力容器类别进行自动划分,使压力容器类别划分更准确、快捷。 相似文献
16.
分别从剩余强度评价和剩余寿命预测两方面介绍了含缺陷压力容器适用性评价技术的研究现状,提出了今后需要着重开展的工作. 相似文献
17.
以一金属-梯度材料-陶瓷的复合圆简为研究对象，研究了功能梯度材料组份连续变化论况下的温度分布和热应力分布规律；并根据强度理论，就ZrO2Ti－6AI－4V梯度材料的热应力分布进行了组份分布的统和特性设计．计算结果表明：金属-陶瓷梯度材料具有较好的热应力缓和性，且其模型具有较广的适用性． 相似文献
18.
刘海侠 《河北软件职业技术学院学报》2007,9(3):63-65
本文在弹塑性断裂双参数分析方法的基础上,导出了预测压力容器等重要工程结构断裂韧度CTOD要求的理论表达式.只要在实际结构服役条件下,材料断裂韧度高于该表达式要求的韧度值,就可防止结构的弹塑性断裂失效.同时,在该表达式中考虑了应力集中及焊接残余应力的影响,并表明断裂韧度要求随作用应力及板厚的增加而增加.最后给出了两个实例,以考核该理论表达式的实用性. 相似文献
19.
To consider the internal pressure loaded by both the cylindrical Ti-Al alloy liner and the carbon fiber resin composite （CFRC） wound layers, two models are built. The first one is a cylinder loaded with the internal pressure in the hoop direction only. In this model, the total hoop direction load is distributed over all layers under the internal pressure. The second one is a cylinder loaded with the internal pressure in the axial direction only. In this model, the total axial load is distributed over all cylinders under the internal pressure. Taking the boundary conditions of the continuous displacement between layers into account, a group of equations are built. From these equations, we get the solutions of stresses in both hoop direction and axial direction loaded by every layer under internal pressures. After the stresses are obtained, a reasonable design can be done. An example is given in the final section of this study. 相似文献