基于MATLAB提高Pt100测温系统响应速度的研究

通过对外加保护铜套的Pt100测温系统的实验研究,利用MATLAB建立了该系统对温度输入响应的数学模型,并通过合理增设串联相位超前校正网络提高了Pt100测温系统的响应速度。对于不同组成的Pt100测温系统,可选择不同的串联相位超前校正装置参数实现响应速度的提高。     

JD-1同步电动机微机控制机在整流励磁装置中的应用

为了解决同步电动机在启动过程中的脉振现象以及在运行中因励磁电流不稳而使电动机跳闸等可靠性问题,在整流励磁装置中采用了JD 1同步电动机微机控制机。介绍了控制机的励磁技术性能、励磁可靠性及其维护,较好地改善了电网的功率因数,提高了同步电动机的运行可靠性。     

统计技术在计量标准考核中的应用

阐述了计量标准考核的现状及存在问题，提出了在计量标准考核中运用数理统计技术的具体方法、步骤，即通过核查标准建立测量过程统计控制，进而实现实验室的运行控制。     

重油催化裂化装置安全评价

运用道化学公司火灾、爆炸危险指数评价方法对广州石化重油催化裂化装置进行安全评价，定量地认识该装置的危险性，提出安全建议。     

Measuring and improving safety culture in organisations: an exploration of tools developed and used in Belgium

To support organisations in addressing their safety culture, practical tools have been developed worldwide. Based on such practical tools, it is possible to measure where an organisation is situated regarding its safety culture in order to identify priority areas, formulate appropriate improvement strategies and determine changes over time. In this paper, it is examined which practical tools to measure and improve safety culture are provided on the Belgian market. In total, 15 Belgian tools were identified, of which 8 agreed to cooperate. Amongst the included tools, there is a lot of variation regarding the methods to diagnose the safety culture and the overall procedure to improve the safety culture. The importance to adapt the tool to the specific needs and context of organisations is acknowledged in most of the tools, as well as the importance to use a multi-method approach to measure the safety culture. Also, it is recognised that all hierarchic levels should participate during the process of diagnosing the safety culture. A point of attention is this overall participation during the validation of the results of the diagnosis, and the priority setting of the recommendations, which is mainly done by the higher management. The development of the Belgian tools is based on experience with a focus on direct practical application, which leads to the fact that none of the tools are validated through scientific evidence. Another point of attention is that organisations pay too little attention at the continuity of safety culture research. And finally, the question can be raised if the safety culture tools actually address the concept ‘safety culture’, or if they address only a subset of the concept. When safety culture is addressed, a comprehensive approach should be used, where technological, organisational, human and external aspects are taken into account as interacting and interrelating elements.     

电磁流量与示踪相关流量组合测井仪及其应用

在对电磁流量与示踪相关流量组合测井仪的基本原理、井下仪器结构、仪器工作方式、技术指标等内容进行详细阐述的基础上,进一步运用测井实例分析了电磁流量与示踪相关流量组合测井仪能把电磁流量计、示踪相关流量计、同位素吸水剖面测井仪组合到一起,使附加井温、压力、磁性定位等参数相互印证,得出准确的综合解释结果,从而为油田监测提供准确可靠的测井资料,具有一定的现实意义。     

运用DCS集散控制系统提高天然气计量准确度

江苏油田在用的CWD-430双波管差压式计量装置存在结构复杂、维护工作量大：计量准确度低等缺点。影响了天然气生产数据的准确录取。引进DCS集散控制系统及高级孔板阀,实施生产工艺系统技术改造,实现了流量、压力、差压、温度信号的自动采集、计算,使计量装置的使用及维护检定更加可靠、简便,提高了天然气生产、计量自动化管理水平。     

多相流量计的原理与开发应用简介

多相流量技术就是将一种多相流量计直接安装在油气集输管线上，采用先进的测量技术，对油、气、水三相在不分离情况下进行连续、在线和自动计量，从而可以取代传统的由测试分离器及其辅助系统组成的计量装置，简化油气生产工艺流程，降低投资，减少操作成本。它可根据应用场合采用不同精度等级的多相计量装置，直接对油井产出液中的油、气、水三组分进行计量。     

自动加药装置

全自动加药装置广泛应用于冶金、石油、化工、造纸、环保等领域的水质提纯加药处理、原油脱水加药处理、液体沉降加药处理以及腐蚀性液体的加药处理,本系统采取了设计独特的隔膜式加药泵,其耐腐蚀性强,运行寿命长,为确保系统设备的安全可靠运行提供了切实可行的保障。     

Global competition and cooperation in the electronics industry: the case of X-ray equipment, 1900–1970

The electronics industry is often regarded by scholars as an example of a sector driven by endless technological innovation and major competition between a few large companies, thus embodying the common view whereby the free market leads firms to innovate. On the other hand, some business historians have also emphasised that, since the beginning of the twentieth century, most of these companies were engaged in various international cartel agreements. The business and economic history literature on this industry reveals a clear-cut divide between the inter-war years and the post-war era. In this paper, however, we argue that technical and commercial cooperation between large electronics companies continued in various forms despite the spread of anti-trust policies after 1945. In this case study, we explore the global X-ray equipment industry from its beginnings around 1900 to the advent of the CT scanner in the early 1970s. The paper focuses on Siemens and Philips, the two largest manufacturers of radiological equipment. It demonstrates that both companies pursued their commercial and technical cooperation at least until the 1970s, although it was much less overt as during the interwar years.