振动监测和故障诊断技术在冶金机电设备的应用

介绍了在线监测系统的工作原理、组成、功能.运用现代故障诊断技术和系统集成技术,对设备运行过程进行实时在线监测,实现设备隐患的早期诊断.重点介绍了该系统在生产中的应用实例,以及系统的使用效果.     

利用OneproD设备构建在线振动监测系统

钢铁企业能源系统大型旋转机械较多,包括空压机、鼓风机、加压机、空分等。这些设备对生产较重要,但是其分布较为分散,导致进行实时有效的监控诊断分析较为困难。为了更好的监测诊断分析这些设备的运行状况,特此构建在线振动监测诊断分析系统用于大型旋转机械在线状态诊断分析。     

莱钢变电站在线温度无线监测系统的研究与应用

针对莱芜钢铁集团有限公司变电站封闭式设备温度无法在线实时监测的问题,采用了在线温度无线监测系统.该系统实现了对电力系统高压设备接触点的温度进行实时在线监测,经过与电力自动化系统连接,做到了远距离遥测,对温度异常情况发出报警信号并及时提醒值班人员采取措施.本文详细介绍了系统组成、系统软件设计及系统特点,实际运行结果表明,系统的应用对降低设备故障率,延长设备使用寿命,减轻工作人员劳动强度效果显著.     

基于多传感器融合的电机在线状态监测方法

电机系统的安全运行与生产过程的稳定性息息相关,因而对电机运行状态的在线检测和诊断具有重要意义.随着传感器和嵌入式技术的发展,电机监测方式也由以人工和单一的信号为主向多传感器检测方向发展.为进一步探究多传感器检测的准确性和有效性,基于嵌入式系统面向多种电机状态参数实时监测与分析,设计开发了一套电机在线状态监测系统,利用小...     

在线监测技术在滚动轴承运行管理中的应用

利用在线监测技术对滚动轴承进行实时监测,精准分析诊断滚动轴承运行状态,制定有效的维护、维修管理方案,对于提高设备运行的可靠性,降低维修费用具有深远意义。     

2050mm热轧产线设备智能运维技术的应用

介绍了2 050 mm热轧产线重点关键区域设备智能运维技术应用和探索,从高压供配电设备状态在线监测系统集成及预警诊断规则开发、轧线重要旋转设备在线监测系统集成及预警诊断规则开发、L1/L2系统的过程数据的设备状态监测系统及预警诊断规则开发、运维平台智能运维功能开发等多角度进行监测诊断技术应用和智能运维模式转型的探索,为产线设备智能运维全流程的实现积累经验、提供借鉴。     

热连轧主传动设备状态监测与故障诊断系统的设计及应用

针对攀枝花新钢钒股份有限公司的热连轧主传动系统,设计并开发了一套设备状态监测与故障诊断系统,该系统是基于RS485总线与工业以太网的分布式系统,主要完成振动信号和温度信号的采集和存储以及故障的在线监测和诊断.系统投入运行后,效果良好,为提高板材质量提供了可靠的保证.     

主传动状态检测及故障诊断方案的研究

轨梁厂万能线主传动监控系统主要有轧机工艺状态在线检测、轧机力能状态在线检测、轧制条件信号检测等三部分,根据现在运行情况看,存在不足之处,主要是主传动轧制扭矩直接的状态检测、判定和振动状态在线检测及故障诊断系统.为预防较大的事故发生,对关键设备轧机主传动运行状态提出了完善、详细的监测和故障诊断方案,做到预知维修,减少设备事故,实现生产百米高速钢轨"高尺寸精度、高表面质量、高平直度"的名牌优质产品.     

变压器色谱在线监测系统中的关键技术分析

变压器是电力系统主要设备之一.其安全可靠地运行,对电力系统供电可靠性的提高有着重要的意义.变压器在线色谱分析是基于对油中溶解气体分析理论展开的在线监测,它能够直接实现定时在线智监测和诊断故障对我们及时了解变压器运行状况、发现并追踪存的潜伏性故障及根据专家系统诊断运行工况起着重要作用.     

天华化工机械及自动化研究设计院有限公司

正国内率先进行阳极保护技术研究的单位国内重大硫酸项目阳极保护设备供应商阳极保护远程监控及预警系统国家发明专利:ZL 2012 1 0005384.7通过物联网技术实时采集阳极保护设备运行参数,通过电脑端或手机端实时远程在线监测。参数异常时迅速向捆绑手机(业主设备负责人及我方售后工程师)发送报警短信。诊断设备运行状态,提供解决方案。历史数据查询。根据用户要求,可共同研制基于物联网技术的其它设备远程监控系统,如监测硫酸生产工艺参数等。     

Physicians and the medical society--between the interests and values

Macrophages may be a potential regulator of ovarian functions. The goal of this study was to determine the changes in the macrophage frequency (number of cells per unit square of tissue) during follicular growth, ovulation, and postovulatory follicular regression in chickens. Cryostat sections of ovarian stroma containing primary follicles, small white follicles, and preovulatory and postovulatory follicles of laying hens were immunostained for macrophage using mouse anti-chicken macrophage monoclonal antibody. Macrophages were observed under a light microscope and counted by a computer assisted image analyzer. The frequency of macrophages in the theca layer was significantly greater in the small white follicles than in the primary follicles (P < 0.01) and also greater in the preovulatory follicles than in the small white follicles (P < 0.01). No significant differences were observed in the macrophage frequency between the third largest and largest preovulatory follicles. In the theca layer of postovulatory follicles, macrophage frequency was significantly greater than in that layer in the preovulatory follicles (P < 0.01); however, the frequency of macrophages decreased significantly in the Day 3 postovulatory follicles as compared with Day 1 postovulatory follicle (P < 0.05). These results suggest that macrophages may play an important role in the follicular development and regression of postovulatory follicles.     

Dermatology and the Internet--uses for the clinic and research

Improvement brought to iodinated molecules aims to obtain an optimal enhancement effect together with a lower toxicity. However, benign adverse events remain a common risk, and anaphylactoid reactions from the intravascular administration of iodinated contrast media may occur at random and are unpredictable. Although most contrast reactions are mild and self-limited, severe and even life-threatening reactions can occur at any time and for any kind of agent. Physicians must be aware of possible complications related to administration of this kind of agents and must be able to identify patients at risk, to care for prevention and prescribe an appropriate premedication regimen.     

Kinematics of the pelvic girdle and the thoracic and lumbar segments in the course of the lateral inclinations and rotations of the spine

Physiological displacements of the trunk are the addition of these of the pelvic girdle and thoracic and lumbar spine segments. For a long time (3), this conjunction had been noticed but without numbered precisions. The purpose of this communication is to appreciate quantitatively, from a series of 16 subjects, the respective share of each components during lateral bending movements in the frontal plan and movements of rotation in the transverse plan. It results from this work that the pelvic girdle presents as reduced amplitude (4 degrees) in lateral bending on the other hand, displacement predominate to the level of thoracic spine (50 degrees). In rotation pelvic displacements are very important (30 degrees), while the spine so thoracic that lumbar has a weak participation (inferior to 5 degrees). Moderated abduction of hips increases by significant manner the motility of the pelvic girdle.     

Design and analysis of the tunnel connecting the beamcorridor and the spectrum hall of the CSNS

There is a tunnel connecting the beamcorridor and the target station in the spectrum hall in the CSNS project. The length of the tunnel is about 20 m. The shielding design of the tunnel is very significant for the persons working in the spectrum hall beca     

谈投标报价策略和技巧

建筑企业参加投标竞争,目的在于得到对自己最有利的施工合同,从而获得尽可能多的盈利.为此,做出投标决策以后,必须仔细研究投标报价策略,并借助投标报价技巧,以达到既能中标又能赢利的目的.