道路照明设计浅谈

在介绍城市道路分类及道路照明评价指标的基础上,对路灯的布设,灯杆、光源、灯具的选择,道路照明供配电及控制,电缆敷设及接地保护等设计要点作了阐述,从而做好道路照明设计,满足使用要求。     

熟料中SO3对水泥性能的影响

新绛威顿水泥有限责任公司有拥1条1000t／d熟料的新型干法水泥生产线。因其所用燃煤w（SO3）较高，矿点杂，导致熟料中w（SO3）普遍较高且波动较大。文章以2002年～2004年生产数据为依据，对该厂熟料中SO3量高低对水泥性能的影响进行了归纳和分析，发现随着熟料中SO3量的增多，熟料凝结时间缩短，28d抗压强度有所增加，3d抗压强度基本无影响。所以，当熟料中SO3量变化较大时，要相应调整水泥中SO3的加入量，以保证水泥凝结时间的正常。     

基于数理统计的光整机工艺参数设定方法及应用

合理的轧制力和弯辊力设定是实现光整机稳定轧制的前提,更是获得良好板形及板面质量的基本保证。针对某冷轧厂镀锌线二级系统简陋,轧制力和弯辊力设定值无法自动生成的问题,采用统计学的方法,并以统计数据为基础,设计出简单的光整机二级轧制力和弯辊力模型,并在生产中进行了应用。实际生产表明:采用轧制力和弯辊力二级自动控制系统,延伸率波动保持在±0.1%以内,部分可保持在±0.05%以内,且波动只出现于带头,基本小于10 m;提高了光整机段速度,不再减速过焊缝,且未再出现过渡过程中断带、拉窄等问题;减少了人工干预及误操作,降低了操作人员的工作强度。     

浆液型电磁流量计在煤化工水煤浆流量测量中的应用

通过对煤化工生产中水煤浆计量难的分析,有针对性地解决了水煤浆电磁流量计在具体应用中存在的问题。为煤化工设计院、水煤浆电磁流量计制造厂家、化工生产企业的工作改进提供可靠的依据。     

餐厅内部新型传菜系统的设计

提出了餐厅内部的新型传菜系统,着重分析了其结构组成和各个子系统的装置设置与控制设计,以达到提高餐厅服务效率、降低工作人员劳动强度和创造良好就餐环境的目的。     

射频阻抗技术在油罐剖面监测中的应用

在油田生产中,原油沉降罐中油水界面及液位的准确测量对于油田的正常生产有着重要的作用。目前的油罐液位及油水界面测量装置误差较大,本文提出通过逐点阻抗测量技术这一全新的测量方法来提高液位及油水界面的测量精度,为生产工艺的调整及相关部门的决策提供可靠依据。     

Quantitative prediction of reduction in large pipe setting round process

The control manner during the process to ensure the quality of pipe products mainly relies on the operator’s experience, so it is very necessary to study the setting round process and obtain its spring-back law. The setting round process is shaping an oval section pipe into circular section, so it is difficult to provide a quantificational analysis for its spring-back process because of the curvature inequality of pipe section neutral layer. However, the spring-back law of the circle-oval process can be easily predicted. The experimental method is firstly used to establish the equivalent effect between the setting round process and the circle-oval process. The setting round process can be converted into the circle-oval process. There are two difficulties in the theoretical analysis for the circle-oval process: elastic-plastic bending problem of curved beam; statically indeterminate problem. A quantitative analytic method for the circle-oval process is presented on the basis of combination of the spring-back law of plane curved beam with the element dividing idea in finite element method. The ovality after unloading versus the relative reduction is plotted with analytical and experimental results respectively, which shows a fair agreement. Finally, the method of quantitative prediction of reduction for large pipe setting round is given based on the equivalent effect and the analytical results. Five pipes, which are needed to be set round, are used to carry out experiment so as to verify this method. The results of verification experiment indicates that, in the experimental range, the residual ovality are all under 0.35% after the once only setting round with the theoretical prediction reductions. It is much less than the 1% requirement of pipe standard. Applying the established theoretical analysis is able to correct the pipe ovality with sufficient accuracy, which provides theoretical direction to plant use.     

装模高度调节装置设计计算及标准化与系列化

简要介绍装模高度调节装置设计的一般要求及主要尺寸参数的计算、校核方法,装模高度调节装置的标准化、系列化设计要点以及所取得的成果。     

碱-偏高岭石-矿渣系胶凝材料的凝结硬化性能研究

研究了不同粒化高炉矿渣掺量对"碱-偏高岭石-矿渣"体系在室温下凝结硬化性能的影响和对反应物的NH4+交换容量的影响.结果表明:在温度(20±1)℃并保湿养护条件下,随矿渣掺量的增加,碱-偏高岭石-矿渣系胶凝材料的凝结时间缩短,抗压强度提高,反应物中结构类似沸石的产物含量下降.     

对大学信息技术课程建设思路的探讨

随着社会产业结构的调整，信息技术教育的内容和要求发生了巨大变化，开创新的教育理念和教育方法要从课程建设和师资培养两个方面入手。课程建设是高等学校教学管理工作建设及专业建设的重要内容，师资培养是提高整体教育水平的关键。