流体动密封压力接头的计算机辅助设计与选型

介绍在AutoCAD 2 0 0 0上 ,如何运用ObjectARX开发集流体动密封压力接头选型、设计绘图与客户信息查询于一体的CAD软件系统。     

新型自封带旁通阀回油过滤器基本模型介绍

针对箱侧、箱底回油过滤器的特点,提出一种较传统结构更简单、使用起来更方便的结构模型。     

Transport properties of nonelectrolyte liquid mixtures—IV. Viscosity coefficients for benzene,perdeuterobenzene, hexafluorobenzene,and an equimolar mixture of benzene + hexafluorobenzene from 25 to 100°c at pressures up to the freezing pressure

Viscosity coefficient measurements made with an estimated accuracy of ±2% using a self-centering falling body viscometer are reported for benzene, perdeuterobenzene, hexafluorobenzene and an equimolar mixture of benzene + hexafluorobenzene at 25, 50, 75 and 100°C at pressures up to the freezing pressure. The data for each liquid at different temperatures and pressures are correlated very satisfactorily by a graphical method based on plots of 9.118×10⁷ V ^2/3/(MRT)^1/2 versus logV, and are reproduced to within the experimental uncertainty by a free-volume form of equation. Application of the empirical Grunberg and Nissan equation to the mixture viscosity coefficient data shows that the characteristic constant G is practically temperature- and pressure-independent for this system.     

低压长袋脉冲袋式除尘器设计与应用

以工业原料尤里卡沥青(EP)为对象，详细论述了低压长袋脉冲袋式除尘器的主要设计环节，着重分析了新型脉冲阀技术。指出了该技术在化肥行业原料干燥、风扫制备等方面的推广应用和发展趋势。     

Standardized task strain and system response times in human-computer interaction

Abstract

Involuntary delays in human-computer interaction, for example, system response times (SRTs) can increase stress. In the present study, 40 college-age subjects were randomly divided into an “incentive” and a “non-incentive” group”. Subjects performed a computer task with SRTs of 0-5, 15, and 4-5 s. Physiological, subjective, and performance data were collected during the task. The computer task was designed to individually set difficulty level (i.e., mental strain), thus standardizing the task for all subjects. By using this procedure, changes resulting from SRT duration can be separated from the effects related to task difficulty. The results indicate that both short and long SRTs produced differential psychophysiological changes consistent with different types of stress responses. Short SRTs resulted in higher autonomic and somatic activity, increased positive self-reported emotional states but poorer performance. Long SRTs resulted in increased electrodermal activity, negative self-reported emotional states and better performance.     

阿海水电站围堰防渗墙缺陷修补施工

阿海水电站截流采用了大量的块石和钢筋石笼,在后续上游防渗墙施工过程中,因成槽部位地层结构复杂导致卡钻且处理困难,围堰无法闭气。经研究,采用了高压旋喷灌桨技术进行了缺陷部位的防渗处理。介绍了在特珠地层条件下,高喷施工参数的选择,以及浆液的调整与组合,并对关键技术处理措施及质量控制方法进行了阐述。施工完成后,防渗墙已经过两个汛期的运行,证明防渗效果满足工程需要,为同类基础的施工积累了经验。     

金鸡滩水电厂2号机组异常运行分析及处理

金鸡滩2号机组在运行中出现了油压装置压油泵频繁打油,受油器下游侧端盖与挡油环、端盖与小轴相互碰刮的异常运行情况,文章对此异常情况进行了分析并介绍了故障的排查处理过程,对类似机组的相同故障处理有借鉴作用。     

彭家岩水电站压力管道滑坡治理技术

对彭家岩水电站压力管道滑坡治理工程进行了分析总结。实践证明,根据彭家岩水电站工程地质条件和滑坡机理分析,所采取的完善排水、外封内排,卸荷减载、稳定坡脚,下挡上护、灌桩支撑的工程治理技术措施是有效的,通过综合治理保障了电站的安全可靠运行。     

一种有创血压模拟器的设计

针对有创血压测量设备研发阶段、校准测试或在教学实验中难以采用人体或动物来做试验的缺点,提出一种新型有创血压模拟器设计方法。该模拟器通过微控制器产生正弦波和各种人体血压波形,输送到扬声器产生振动,利用传动模块和压力传感器将压力变化值传送到上位机作显示分析。实验表明该模拟器具有精度高、波形显示速度快的特点。