我国长距离浆体管道输送系统的应用概况与展望

长距离浆体管道是一种高效、节能、环保的运输方式,拥有广阔的应用空间和发展前景。为了使我国浆体输送从业人员更加全面、及时地了解管道输送系统的现状和动态信息,以便进一步推动该技术在我国的应用和发展,着重介绍了国内浆体输送系统动力泵、管材和阀门的研发、制造水平,总结了管道输送系统主要设备和材料的应用概况及最新进展,并对未来浆体管道输送系统的发展趋势进行了展望。     

远程压力限制在S90闭式系统中的应用

该文对萨澳丹佛斯公司的S90闭式泵的远程压力限制（RVPL）系统进行了研究,并指出使用RVPL阀时的一些注意事项;详细描述了使用RVPL系统时,系统对RVPL阀及其回路的性能要求;并概括性的介绍了部分RVPL闭式系统在不同领域的应用特点。     

Friction compensation in control valves: Nonlinear control and usual approaches

This work presents different approaches to reduce the control valve friction effect on a process. One is to use the sliding mode control in different conditions and then to compare this controller to widely used algorithms and devices that reduce the control loop variability. The experiments were performed in the Flow Pilot Plant of Polytechnic School of the University of São Paulo with a pneumatic control valve with high friction in a flow control loop. The sliding mode controller yielded promising results, which can represent new horizons with respect to friction compensation in control valves.     

浅谈供热管网分段阀的设置

利用现行的计算公式,考虑供热管网的修复性等因素,对太原市供热管网的分段阀设计进行了优化分析,力求降低系统的初投资。     

Bioreactors for heart valve tissue engineering: a review

Bioreactors have great potential in the successful development of tissue‐engineered heart valve replacements, both at the research stage and in commercial platforms. Their ability to mimick the chemical and physiological conditions of the body has allowed researchers to study in vitro cellular responses, and this has helped in the fabrication of better and more efficient tissues in vivo. Use of different bioreactors, such as, rotating, dynamic flexure, cyclic stretch and pulsatile bioreactors, in tissue engineering of heart valves has been widely investigated. However, this research is still at its early stage, and many critical issues need to be resolved to make tissue engineered heart valves sufficiently reliable for clinical applications. In the following article, after a brief introduction to the structure and role of heart valves, the efforts of tissue engineers in designing heart valves using different bioreactors is described. © 2015 Society of Chemical Industry     

介绍新书《液压螺纹插装阀》

《液压螺纹插装阀》系统地全面地介绍了螺纹插装阀,是为中国同行总结的,也是为刚走出大学校门,即将从事液压技术的毕业生而写的。该书包含了一些世界知名公司近年来液压阀的研发内容,可供大学教师在改编修订教材时参考。     

上密封阀在高炉无料钟炉顶设备的设计及应用

文章对包钢炼铁厂2 500 m^3高炉炉顶设备上密封阀在高炉炉顶设备中的作用、结构组成及传动原理进行了叙述,对上密封阀传动装置、密封圈等部件进行设计,对传动轴进行了受力分析及计算。     

EST-2D停车制动系统的应用分析

本文通过对停车制动系统的原理论述,分析了EST-2D停车制动系统的起动保护、电缆过卷保护、系统保护等应用,有助于掌握设备特性,从而可通过独特操作和正确维护保养进行高效作业。     

基于插装阀的煤矿液压支架操纵阀综合试验台设计与研究

针对液压支架操纵阀的大流量试验,改进了试验台液压系统,其中液压系统中的关键控制元件采用插装阀。针对原试验台试验过程全部由试验员控制,试验数据不利于管理,本设计增加了计算机测控系统。系统由嵌入式工业控制计算机、AI/AO模块、DIO模块、继电器输出端子板、信号调理和接线端子板等组成。通过计算机高级C#程序编写设计对整个试验过程进行更有效的试验数据采集和过程控制,实现了试验过程及试验数据采集的自动化。