湿盐胶带双级清扫器

清扫器的作用是将皮带上沾着的介质清除干净的装置。对湿盐胶带来说,若清扫器不能正常工作,将直接影响着皮带机的正常运行,增加原材料的消耗,造成很大的浪费,有时甚至使生产被迫停止。     

小个头，截大图

PCD杂志中有很多软件的界面图。这些都是通过截图软件捕捉并保存下来的。此类软件中比较出名的是HyperSnap、Snaglt等。不过这几个软件都有不少辅助功能。显得略为复杂。如果只是希望单纯的截图功能，下面这款小工具也许更合适。[编者按]     

海洋平台主发电机燃料切换保障分析

海上平台如有稳定的气源,一般设置燃气/柴油两用主电站,当燃料气系统压力降低时,主电站燃料要从常态的天然气切换到柴油,这时要评价系统是否能够满足主机切换的要求。本文对切换时需要的燃气量进行了较为精确的计算,适用于燃料气用量大、操作压力高的主发电机系统。     

海上某油田原油脱水稳定工艺方案选择

根据南海S油田原油物性,结合S油田钻采平台的空间布局情况,对该油田的原油处理工艺进行了分析,提出了满足原油外输要求的四种原油脱水稳定方案。结合各个方案特点和设备布置情况,对该四种方案进行了空间布置、能耗和经济性对比,最终选择了"生产分离器+电脱水器+脱气罐"高压方案作为该平台的原油脱水稳定工艺方案。该方案降低了设备费用,有效的利用了平台空间,同时满足了原油外输的要求。     

基于飞轮矩计算的活塞式压缩机计算机辅助设计研究

往复压缩机飞轮矩的计算是动力计算的主要内容之一,人工与编程计算两者难以兼顾精度、可靠及方便。文章提出用Auto CAD绘制压缩机综合活塞力图、切向力图,求取飞轮矩的方法。通过ZW型设计实例研究了Auto CAD在活塞式压缩机飞轮矩计算方法上的应用。事实证明此法直观明了、精度高、方便可靠。     

Preset model of bending force for 6-high reversing cold rolling mill based on genetic algorithm

The hydraulic roll-bending device was studied, which was widely used in modern cold rolling mills to regulate the strip flatness. The loaded roll gap crown mathematic model and the strip crown mathematic model of the reversing cold rolling process were established, and the deformation model of roll stack system of the 6-high 1 250 mm high crown (HC) reversing cold rolling mill was built by slit beam method. The simulation results show that, the quadratic component of strip crown decreases nearly linearly with the increase of the work roll bending force, when the shifting value of intermediate roll is determined by the rolling process. From the first pass to the fifth pass of reversing rolling process, the crown controllability of bending force is gradually weakened. Base on analyzing the relationship among the main factors associated with roll-bending force in reversing multi-pass rolling, such as strip width and rolling force, a preset mathematic model of bending force is developed by genetic algorithm. The simulation data demonstrate that the relative deviation of flatness criterions in each rolling pass is improved significantly and the mean relative deviation of all five passes is decreased from 25.1% to 1.7%. The model can keep good shape in multi-pass reversing cold rolling process with the high prediction accuracy and can be used to guide the production process.     

扫描设置碎碎念

扫描操作是杀毒软件保护系统的日常工作，可是一次全面的扫描太花时间了，本文以《卡巴斯基》为例来说明怎样优化扫描速度而不降低扫描质量。[编者按]     

锥篮离心机构上几个值得探讨的问题

锥篮离心机由于结构简单,检修方便,而且生产能力大,所以在制盐生产中得到了广泛应用,湖北省的大部分制盐生产厂家都使用锥篮离心机。我厂自1990年以来已先后将WH-800卧式活塞卸料离心机改装为锥篮离心机四台,经过近两年的运行,使用效果很好。今年又从广重购买了3台WI-650锥篮离心机,在Ⅲ组罐已安装了两台,并已投入运行。仅与我厂自行改装的WZ-650锥篮离心机相比较,广重产的WI-650锥篮离心机有以下几点优点: 1.设备结构紧凑,体积小、重量轻、安装方便。 2.稳定性好,动、静平衡好,振动小。     

河南省河南庄金矿床Ⅱ号矿体原生晕特征与深部成矿预测

河南庄金矿床位于北秦岭构造带内,该构造带内成矿地质条件优越,具有较好的找矿潜力.Ⅱ号矿体为河南庄金矿床的主要矿体之一,为进一步探明其深部找矿潜力,针对Ⅱ号矿体进行了原生晕特征分析.结果表明:Ⅱ号矿体原生晕轴向分带序列为Pb-Zn-Au-Mo-Cu-Ag-As-Sb-Bi-W;前缘晕元素为As、Sb、Ag,近矿晕元素为P...