煤气压缩机存在问题及改造措施

对煤气压缩机运行以来所存在的问题进行了分析，相继采取的改造措施及取得的效果作了探讨。重点阐述了油冷却器的改造。     

p,V, T and derived thermodynamic data for toluene,trichloromethane, dichloromethane,acetonitrile, aniline,and n-dodecane

Experimentally determined p,V,T data are reported for toluene, trichloromethane, dichloromethane, acetonitrile, aniline, and n-dodecane at 278, 288, 298, 313, and 323 K, except for dichloromethane, for which the highest temperature was 298 K. At each temperature, measurements were done at pressures up to about 280 MPa or (for aniline and n-dodecane) at a lower pressure slightly below the freezing pressure at the temperature of measurement. Values of the isobaric expansivity isothermal compressibility and (for toluene, trichloromethane, dichloromethane, and acetonitrile) internal pressure, derived from the p,V,T data, are presented.     

Centrifugal Casting of High Speed Steel/Nodular Cast Iron Compound Roll Collar

Ｈｉｇｈ ｓｐｅｅｄｓｔｅｅｌ (ＨＳＳ) ,ｉｓｃｈａｒａｃｔｅｒｉｚｅｄｂｙｅｘ ｃｅｌｌｅｎｔｈａｒｄｎｅｓｓ ,ｗｅａｒｒｅｓｉｓｔａｎｃｅ ,ａｎｄ ｇｏｏｄｒｅｄｈａｒｄｎｅｓｓ .Ｒｅｃｅｎｔｌｙ ,ＨＳＳｉｓａｐｐｌｉｅｄｔｏｍａｎｕｆａｃｔｕｒｅｈｏｔｒｏｌｌｉｎｇｒｏｌｌｓｔｏｐｒｏｄｕｃｅｓｔｒｉｐｓｏｆｇｏｏｄｓｈａｐｅａｎｄｓｍａｌｌｃｒｏｗｎｗｉｔｈｅｘｔｅｎｄｅｄｒｏｌｌｓｅｒｖｉｃｅｌｉｆｅ[1,2 ] .ＴｈｅＨＳＳｉｓａｐｐｌｉｅｄｔｏｍａｎｕｆａｃｔｕｒｅｒｏｌｌｃｏｌｌａｒｆｏｒ…     

高密度澄清池在邯钢第二污水处理厂的应用

高密度澄清池是一种新型高效的澄清池。介绍了高密度澄清池的工艺原理、运行条件和主要参数及在邯钢第二污水处理厂的应用情况。     

深孔预裂爆破在溢洪道高边坡开挖的应用

高边坡深孔预裂爆破是一项对施工质量、安全要求极高的爆破技术, 必须进行科学的爆破技术设计,确定合理的爆破参数;高度重视爆破钻孔工艺、装药工艺、网络工艺以及边坡稳定性地质分析.在洞巴水电站中不允许采用超欠平衡的开挖方法进行施工,利用设计台阶高度,采用深孔预裂爆破对溢洪道高边坡的稳定及开挖平整度进行有效控制,取得良好效果.     

Improvement of levitation characteristics in a magnetic bearing system using HTSC‐permanent magnet hybrid structure

Magnetic bearing using pinning force of a permanent magnet and a high‐temperature superconductor has been developed. Additional permanent magnet is introduced to increase the levitation force of the magnetic bearing. In this hybrid magnetic bearing system, levitation force is mainly given by the repulsive force of the permanent magnets, and stability for the lateral direction is given by pinning force of the superconductor. The experimental device is developed. A ring‐type superconductor and a bulk one are examined. Levitation characteristics of the hybrid magnetic bearing are measured. The bulk superconductor shows better characteristics of both levitation and lateral stability than the ring one. Levitation force of the hybrid system becomes about twice as large as that of the nonhybrid one. Although, the repulsive force of the permanent magnet decreases the lateral stability of the system, its influence becomes small by choosing an adequate position of the permanent magnets and the superconductor. © 2004 Wiley Periodicals, Inc. Electr Eng Jpn, 150(1): 71–77, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10350     

陈垃圾土的压缩性试验研究

首先介绍了重庆市主城区填埋场的现状，论述了深入研究陈垃圾土压缩特性的重要性。作者在简要总结了采样场内陈垃圾土的基本物理性质后。通过室内侧限压缩试验(亦称固结试验)，得出了描述陈垃圾土压缩性质的基本参数，如αv、Es、mv和Cc等，试验表明陈垃圾土是一种不同于常见土类的高压缩性欠固结土，试验结果可为填埋场再利用和已封闭填埋场的沉降计算提供依据。     

高压低温先导式安全阀的设计

介绍了一种某试验系统用高压低温先导式安全阀,主要从工作原理、结构特点、材料的选用、结构特点、试验等方面进行阐述。     

微型构造表征技术在八面河油田的应用

通过对八面河油田井网密集区及井网稀疏的欠开发区的微构造研究,探讨了微构造表征技术。首先在储层多层次逐级对比的基础上,建立主力油层对比关系;密集井网条件下,则利用钻井资料编制油层顶底微型构造图;对于欠开发地区,通过人机联作自动追踪成图技术,输出2m等值线间隔构造图,建立微构造模型。以微构造模型为基础进行潜力评价,部署关键井寻找优质储量或进行开发动态调整。应用该项技术在八面河油田滚动发现了角15块等断鼻翼部局部高点,增加石油地质储量488×10~4t。