基于物联网技术下的数字化油气田设计与实现

数字化油气田建设是我国油气企业发展的方向,本文介绍了一种基于物联网数字化油气田系统,通过传感器、射频识别（RFID）、通信网络、云计算等新技术建立一套覆盖油气生产、处理等全过程的物联网系统,实现生产数据自动采集、关键流程连锁控制,工艺流程可视化展示、生产过程实时监测的综合信息平台,实现人与物理系统的“智能”整合,实现工业化与信息化的融合。     

秦安县农村户用改进型沼气池建造的关键技术

近年来,随着我县农村户用沼气建设力度的不断加大,为缓解我县能源资源短缺的现状,通过对农村户用沼气池施工技术及工艺的改进,进行技术集成示范,总结出秦安农村户用改进型沼气池的建造技术,为该地区沼气事业的发展提供科学依据.     

一种新型蓄电池充电控制策略研究

在风光互补发电系统中,蓄电池作为风光互补发电系统的储能设备,在整个发电系统中起着非常重要的作用,而蓄电池充电控制方法的优劣,是影响其使用寿命的一个重要因素。文章对风光互补发电系统中蓄电池的常用充电控制方法进行了分析,提出了一种新的控制策略,即将蓄电池充电电压、充电电流采样值分别与蓄电池事先设定好的恒压过充电压、恒流充电限流值和浮充电流值进行实时比较,来判断采取哪种合理的充电方式,对蓄电池起到尽可能的保护,从而延长了风光互补发电系统中蓄电池使用寿命。     

大型管壳式换热器管-管板连接的可靠性措施

从材料性能、管孔的结构及加工要求、管与管板的连接形式等影响换热器管与管板连接接头强度的因素出发 ,结合乙烯大型换热器E EA12 3F的制造提出了管与管板连接接头的可靠性措施     

重钙装置改产磷铵反应与尾气洗涤系统设备出现的问题

介绍瓮福磷肥厂重钙(TSP)装置改产DAP后,反应与尾气洗涤系统料浆泵、搅拌器、反应器、洗涤泵、重要阀门在运行中出现的问题及处理措施.     

单组分湿固化聚氨酯密封剂的制备、固化特性及开发应用

介绍了单组分湿固化聚氨酯密封剂的制备、固化特性及该产品的国内外发展概况，并就其开发工作提出了看法。     

预应力长锚杆加固理论探讨

通过岩体剪切破坏分析，找出最危险剪切破坏面，再用合理结构的预应力长锚杆或长锚索提供的有效抗剪力，消除岩体最大破坏剪应力，以过到加固边坡不稳定滑动岩体目的。     

Flow pattern measurement in a full scale silo containing iron ore

The flow pattern in a silo is important because it affects both the recovery of solids and the pressures on the silo wall during discharge. Wherever mass flow is not achieved, the boundary of the flow channel has significant implications for both the functional and structural design of the silo. Many techniques have been used for the study of flow patterns in model silos, but most cannot be used at full scale, and very few quality measurements at full scale have ever been made. This paper outlines a full scale experimental study in which the patterns of solids flow and the flow channel boundaries are reliably quantified.The full scale silo was specially designed, constructed and instrumented to exhibit funnel flow and to make observations of the solids flow pattern and the silo wall pressures. It had three outlets: one concentric, one fully eccentric and one in between. Three materials were used: iron ore pellets, slag fines and crushed basalt. This paper describes experiments involving iron ore pellets. The silo was seeded with radio frequency tags whose residence times were measured by detecting them on exit during discharge. The residence time data were studied to deduce the discharge flow pattern. This paper presents the results of three different flow pattern interpretation techniques: the best of them (mass-time relationships) is shown to give a very clear identification of the solids flow pattern and the flow channel boundary.     

单填料函滑动管板式换热器密封结构的设计

自行设计了一台单填料函滑动管板式换热器代替进口设备，运转良好。本文着重介绍该设备密封结构的设计。     

Multimodel analysis and controller design for nonlinear processes

Multimodel analysis and controller design for nonlinear processes via gap metric is discussed. It is shown that the loop-shaping H_∞ approach can integrate the procedure of selecting operating points and the local controller design. The local controllers can guarantee not only stability but also performance specified by the pre- and/or post-compensators. Thus, at each operating points, local controllers can have similar performance, and the global performance of the system can be predicted.