纺机织轴边盘的金属型低压铸造

介绍了采用金属型低压铸造生产边盘所涉及的设备、模具、工艺 ,并对产品质量和经济效益进行了分析     

浅谈气力提升系统的设计

阐述了气力提升系统的组成、原理、选择原则和设计过程。并对气力提升系统与传统提升装置进行了分析、比较,指出气力提升系统具有设备性能稳定、耗能小等优点,有着很好的应用前景,值得推广。     

压力容器无损检测 --长管拖车气瓶的无损检测技术

长管拖车是新类型的压力容器,作为一种高效运输工具,在许多领域应用广泛。综述了国内外拖车气瓶在制造和使用过程采用的各种无损检测方法及标准。方法包括超声、磁粉、渗透和声发射检测等。并介绍了各种无损检测方法的特点。     

磷酸萃取系统中的测量与控制

磷酸萃取是6万t磷铵料浆法流程的关键之一，重要的控制参数有矿浆、硫酸、返回淡磷酸的加入量及萃取槽的液位、压力、温度等。     

OPTIMIZATION OF PRESSURE SWING ADSORPTION EQUIPMENT PART II OPTIMIZATION OF TWO BED OXYGEN GENERATORS

Local equilibrium model described in Part I is used to stimulate both, the steady state operation conditions and transient regime after the start of PSA equipment. The effect of axial dispersion, adsorption isotherm nonlinearity and high pressure level is simulated. On the basis of numerical analysis, the operation of a classical two-bed oxygen generator is compared with two configurations having pressure equalizing step. The optimization strategy of the given PSA equipment has been proposed and the procedure is demonstrated on an example. The scaling-up condition for PSA equipments which can be described by local equilibrium model has been proposed on the basis of the theoretical analysis.     

Cure kinetics and shrinkage model for epoxy-amine systems

Manufacture of most of epoxy resins implies that cure needs to be carried out under pressure. Due to the significance of knowing the influence of the pressure factor in cure kinetics, cure shrinkage of a stoichiometric epoxy-amine system was measured using a pressure-volume-temperature (PVT) analyzer. Recording the specific volume change in the range of temperature from 100 to 180 °C and a pressure of 200 bar we could model the cure kinetics. The Runge-Kutta method was applied to obtain the kinetic constants of the cure reaction. In addition, using the differential scanning calorimeter (DSC) for measurements of 1 bar and the PVT analyzer for pressures of 200, 400, and 600 bar, we also model the kinetic constants as a function of pressure. The results obtained show that the effect of the temperature on the kinetic constants is higher than the effect of pressure. Therefore, both PVT and DSC are complementary techniques to describe the full range of cure kinetic process of epoxy mixtures.     

容器焊缝错边残余应力与载荷应力的测定研究

本文对焊接容器错边和不错边的焊接接头进行了电测法的残余应力测试，确定了焊接残余应力的大小及方向，并在加载的条件下，对各焊接接头测点进行了综合应力测试，并给出了受载条件下的应力分布。     

谈压力容器管理中微机应用

本文介绍一种系统软件在压力容器管理中应用。实践证明,该系统软件运行可靠,操作方便,提高了劳动效率和准确率,降低了劳动强度。     

A paraffin-fueled SOFC system design and integration

This paper addresses an integrated design of paraffin-reformer, gas separations and the electricity production with a solid oxide fuel cell (SOFC). The overall design consists of three modules. First module is a system of paraffin reformer. In this module, the paraffin feed stream is to send to a steam-reformer. In the second module, the gas separations method illustrated is the combination of a methane-permeable membrane with a pressure-swing adsorption (PSA). In the third module, the purified hydrogen is fed to the SOFC unit. To be energy efficient, this paraffin-fueled SOFC system is designed with the consideration of heat integration. The intent of this paper is to provide a possible, alternative way of cogeneration systems for refinery and petrochemical plants.     

有限长矩形压力容器的应力分析法

对有限长承受内压的矩形压力容器，本文提出了同时考虑矩形容器６个面相互作用的分析计算方法。用所编制的程序计算了一个实际的矩形容器，得到了满意的结果。