加热炉汽化冷却的改造与应用

通过对原加热炉无水冷滑轨进行汽化冷却改造,介绍了汽化冷却技术在推钢式加热炉中的设计与应用,改造后取得良好的经济效益,提高了生产效率.     

线材轧钢厂加热炉汽化冷却控制的改造

新疆八钢线材厂加热炉汽化冷却的管路、阀型、控制方式经改造后，汽化冷却控制由现场手动调节改为远程电控，汽化冷却系统运行可靠，与加热炉系统实现并行监控。     

线材轧钢厂加热炉汽化冷却控制改造

通过对八钢线材厂加热炉的管路、阀型、控制方式进行分析和改造 ,使加热炉汽化冷却控制由手动现场调节改造为远程电控 ,达到了优化改造的目的。     

一种应急补水系统在轧钢加热炉汽化冷却系统上的应用

提出一种用于加热炉汽化系统缺水的应急防范措施,它是汽化冷却式加热炉汽化冷却系统补水方式的一次技术革新和理念革新,从而解决加热炉断、掉电及给水泵无法正常工作的异常情况下,汽化冷却系统缺水,造成加热炉汽化冷却系统重大工艺设备事故的难题。结果表明:采用该措施完全可以在加热炉汽化冷却给水泵不能向锅筒正常补水的异常情况下,向锅筒内及时进行补水,确保汽化冷却系统运行不缺水,避免由于锅筒缺水造成工艺、设备事故,从而保证生产的正常运行。     

汽化冷却步进梁加热炉长周期稳定运行维护要点

通过近些年来对厂内数座汽化冷却步进式加热炉的维护、点检和大修检查等,对保证该型加热炉长周期稳定运行的关键维护点,如滑块焊接、软水控制、清理排污以及一些提高运行安全性的小改革进行了总结。     

中板厂蓄热式加热炉软水回收技术创新

济钢中板厂加热炉汽化冷却系统软水消耗量大,根据生产现场情况,对汽化冷却系统进行了改进,设计制作了软水回收贮存闭路循环重新利用装置,采用多级冷却回收使水质达到加热炉再利用的要求,达到了降低软水消耗量的目的。     

步进梁式加热炉汽化冷却系统设计研究

从节能和安全生产两方面出发,阐述了步进梁式加热炉采用汽化冷却的优势.介绍了我国两种炉型采用加热炉汽化冷却的发展过程.说明了保障整个系统安全稳定运行的关键设计工艺和技术.     

浅谈加热炉汽化冷却装置汽包液位

从某热轧厂加热炉汽化冷却装置普遍存在的液位控制不好的情况出发,探讨了液位控制的重要意义。分析了排汽点的选择、液位计的选择、液位调节系统的选择等多个方面对改善液位控制效果的可行性,以保证汽化冷却装置的安全正常运行。     

加热炉汽化冷却装置汽包液位控制问题研究

山西某热轧厂加热炉汽化冷却装置普遍存在液位控制不好的情况,为此探讨了液位控制的重要意义．分析了排汽点的选择、液位计的选择、液位调节系统的选择等多个方面对改善液位控制效果的可行性,以保证汽化冷却装置的安全正常运行。     

加热炉汽化冷却的控制

介绍了加热炉汽化冷却的控制功能及实现,重点介绍采用单调节器三冲量控制方法的汽包水位控制,汽包压力控制,除氧器水位及压力控制,软水箱水位控制,应急给水控制,软水泵、给水泵及循环泵控制,电动阀控制。自动控制系统运行稳定,在板坯、长材等各类型加热炉连续或间断生产的不同复杂工况下,均可实现整个汽化冷却系统的全自动运行。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.