余姚陆埠35kV变电所微机集控装置设计与研究

结合余姚陆埠 35kV变电所的电气一、二次系统设计工作 ,论述了基于BL - 0 2的微处理机为核心的控制系统及上位管理机的综合测量、显示等管理功能。文章对控制系统的硬件构成及软件设计作了详细的研究、分析 ,并对该变电所综合自动化的应用提出优化的设想 ,力图更好的实现变配电、馈电线路等综合自动化的目标     

Suspension force and mechanism of debris flows

The paper discusses the postulated suspension force, by which it is possible to explain some enigmatic phenomena observed in different types of mass movements. This force is generated in thick suspensions as a result of friction between sinking solid particles and static water. The suspension force is related to the seepage force but they have opposite directions. Both forces form flow networks. Having explained the suspension force, the paper describes how this influences the movement of material, particularly in debris flows. Enigmatic features and the mechanism of debris flows and lahars are explained by virtue of the suspension force. Electronic Publication     

国有基层水管单位困境及其出路

针对贺州地区基层水管单位存在的农业水价低、水费征收难和经济困难等现状,对基层水管单位的出路进行了一些探索,提出了一些解决对策。     

罗茨真空泵机组抽气速率分析

罗茨真空泵机组因配用前级泵不同和所处工作压力范围的差异，相应其抽气速率变化较大，设计中应根据具体工况条件及真空系统使用要求，力求使罗茨真空泵机组体现好的适用性和经济性。     

直线式电机在有杆抽油设备中的应用

通过对游梁式抽油机的效率、启动特性与直线式电机驱动的有杆抽油机特性的对比，论述了直线抽油机的优越性及应用前景。     

一种构思新颖的抽油机设计方案

介绍了一种与现有抽油机结构完全不同的机 电一体化抽油机 ,它主要由往复滚筒提升总成、减速器总成、蓄能助启系统及电磁自动控制和动力系统组成。其特点是采用机 电一体化设计 ,充分利用飞轮的蓄能及与电磁自动控制器的相互配合来控制电磁离合器的激磁电流和电动机的电力输入 ,实现上冲程时通电、下冲程时断电的工作方式。该机体积小 ,结构紧凑 ,适应性强 ,能满足抽油井超长冲程和节能的要求     

糯扎渡水电站机组主保护方案

结合糯扎渡水电站大型机组的发电机结构、发电机中性点引出方式及主接线对发电机主保护方案进行了分析研究，提出了发变组主保护方案，并初步确定了发电机中性点CT配置方案。同时也对主要的后备保护及异常运行保护进行了分析，并提出了设置方案。     

我国风机盘管技术现状分析

介绍了近年来我国在风机盘管技术领域的最新成果，在结构形式、强化传热、提高室内空气品质、降低噪音和提高自动控制水平等方面的技术进展情况，分析了目前风机盘管中存在的问题，并对今后的发展方向进行了展望。     

HAT-095催化剂运行末期的优化探索

通过优化工艺条件,严控进料质量、改造循环氢压缩机油系统、调整二甲苯塔操作等措施,使催化剂在运行末期,也能发挥出良好的催化性能,并延长催化剂使用寿命;提高了催化剂处理C10芳烃的能力,降低重芳烃产率,提高经济效益。为催化剂运行末期操作和正常操作提供有益的探索。     

Connecting the second exhaust-heat boiler to the operating first one under the conditions of flow circuits of combined-cycle plants with two gas-turbine units and one steam turbine

Problems arising with connecting the second exhaust-heat boiler to the first exhaust-heat boiler under load in the case of flow circuits of combined-cycle plants of type PGU-450 are considered. Similar problems exist for two-boiler single-turbine units of type PGU-325 and for two-boiler single-turbine units of traditional steampower plants with an output of 200–300 MW upon connection of the second furnace of a two-furnace boiler to the operating first furnace. Analysis of the temperature-induced stressed state and of the cyclic strength of thick-walled elements of the steam-water conduit of PGU-450 and of two-furnace boilers of two-boiler single-turbine units with an output of 200–300 MW (the check valve, the inlet header of the water economizer) is used for determining the steam temperature differences in the high-pressure conduits to the steam turbine and the order of connection of the second exhaust-heat boiler to the operating fist one. Modes of enabling a two-boiler single-turbine unit of a combined-cycle plant, which are most “rigid” from the standpoint of thermal strength, are determined. __________ Translated from élektricheskie Stantsii, No. 2, February 2006, pp. 11–17.