外浮顶油罐边缘密封型式的选用与油气损耗

分析了外浮顶油罐的油气损耗机理和估算方法 ,列举了国内外常用的浮顶边缘密封结构型式 ,并对其优缺点进行了分析对比 ,同时对密封型式的选择及一次密封与二次密封的搭配提出了建议。     

CO2压缩机干气密封损坏及处理

介绍了干气密封在压缩机上的使用及损坏过程,分析了干气密封的损坏原因,并提出了使用过程中的注意事项。     

New sealing concept for planar solid oxide fuel cells

A key element in developing high-performance planar solid oxide fuel-cell stacks is the hermetic seal between the metal and ceramic components. Two methods of sealing are commonly used: (a) rigid joining and (b) compressive sealing. Each method has its own set of advantages and design constraints. An alternative approach is currently under development that appears to combine some of the advantages of the other two techniques, including hermeticity, mechanical integrity, and minimization of interfacial stresses in the joint substrate materials, particularly the ceramic cell. The new sealing concept relies on a plastically deformable metal seal; one that offers a quasi-dynamic mechanical response in that it is adherent to both sealing surfaces, i.e., non-sliding, but readily yields or deforms under thermally generated stresses. In this way, it mitigates the development of stresses in the adjacent ceramic and metal components even when a significant difference in thermal expansion exists between the two materials. The pre-experimental design of the seal, initial proof-of-principle results on small test specimens, and finite-element analyses aimed at scaling the seal to prototypical sizes and geometries are described herein. This paper was presented at the ASM Materials Solutions Conference & Show held October 18–21, 2004 in Columbus, OH.     

马钢一烧2×8 m2竖炉系统的改造

介绍了马钢一烧竖炉系统自投产以来设备上存在的问题及改造后的效果。     

关于气瓶阀门阀瓣密封材料变形问题的探讨

相关的气瓶阀门规定指出，阀门密封面不允许发生塑性变形，但是在进行了4500多次超负荷的启闭试验后，即使阀瓣密封件产生了严重的塑性变形，气瓶阀仍然密封良好。因此，通过大量的试验。从理论上分析了气瓶阀阀瓣密封材料必然会产生塑性变形，也只有产生了塑性变形才能保证阀门实现气密封。     

新型机械密封辅助系统的研究和设计

采用新型机械密封辅助系统,将冷却液打到密封环的内径并循环使用,同时对密封的泄漏进行监测,从而改变了密封环的工作环境,延长了密封件的使用寿命,降低了装置的运行成本,提高了密封系统的安全性。     

汽轮机主油泵轴断裂分析

采用化学分析、力学性能测试和金相检验等手段，对某电站汽轮机主油泵轴的早期断裂进行了分析。结果表明，泵轴未经有效的热处理、边缘存在较大的夹杂物以及键槽未加工R角是导致泵轴断裂的主要原因。     

大直径回转平面研磨工艺探讨

介绍了大直径回转反应炉密封面的设计及研磨工艺,对以往和改进后的研磨主进行了对比,改进后的研磨方法减少了生产成本,缩短了工期。     

闸室沉井沉放施工技术

以上虞市东港排涝闸工程为例,介绍了闸室沉井在沉放过程中的施工技术和质量控制,以及在沉放过程中产生偏斜而采取的纠偏措施.     

内部水汽含量检测技术和低压封装限制

介绍了GJB 548A方法1018规定的内部水汽含量的三种测定程度和原理以及所用的设备，并重点介绍了程度1中的有关测试方法以及对内部封装压强的要求。