高压加热器泄漏原因分析及对策

高压加热器泄漏将严重影响汽轮机组运行的经济性。以河北西柏坡发电有限责任公司1号、2号汽轮机组配套的高压加热器为例，分析了在设计、运行方面导致高压加热器泄漏的原因，提出了防止泄漏的措施和对策。     

降低妈湾电厂空预器漏风率的措施

为降低空预器漏风率，从结构设计分折得出空、烟气压差大和密封间隙大是其漏风的主要原因，通过采取高压水冲洗，气脉冲燃气吹灰，双密封改造，空预器重新选型等一系列措施来降低漏风率。     

提高200MW机组高压加热器投入率的研究

通过对武汉钢电股份有限公司2台200MW机组2年来高压加热器运行状况的统计分析，找出影响高加投入率的主要原因，提出相应的技术改造和技术措施，大大提高了高加投入率。     

大直径灌注桩施工质量缺陷及修补措施

在广西龙胜某综合楼的桩基施工中，由于操作不当，技术控制不严，造成个别大直径灌注桩出现塌孔、断桩和承载力偏低等问题．通过使用高压注浆技术，对这些桩进行了修补和加固补强．后经桩基低应变动力检测，单桩竖向承载力φ1000mm的桩可达4340kN，φ1200m的桩可达6330kN．     

大型加热器的技术开发

介绍了大型加热器的水平式多管排管外冷凝放热计算、介质横向流经管束时的振动校核、整体刚性管束以及管子与管板的连接工艺。     

固态继电器在加热器中的应用设计

介绍了固态继电器(SSR)的基本原理,以SSR为核心,采用定时器、单片机和PID调节器等控制SSR的方法进行了定时开关控制器、程控烘箱和玻璃退火炉的调功加热设计。简要分析了SSR的热设计,并讨论了在SSR的应用过程中影响其性能可靠性的相关因素以及抗干扰问题。     

汽液两相流自调节水位控制器在石嘴山发电厂330 MW机组上的应用

介绍了汽液两相流自调节水位控制器在国电宁夏石嘴山发电有限责任公司330MW机组加热器上的应用情况，通过对该水位控制器原理、现场安装、调试及生产运行中加热器水位变化的观察记录，证实水位控制器控制稳定、效果突出，其安全性、经济性、可靠性均很好。     

350MW机组高压加热器水位控制系统的改进

分析了华能南通电厂350MW机组原高压加热器控制和保护系统存在的缺陷，并提出了具体的改进方案：(1)淘汰气动控制器，以DCS实现其控制；(2)改进高压加热器危急疏水方式；(3)增加变送器数量；(4)改进保护逻辑和保护参数的设定。改进后的系统运行情况良好。     

高加水位运行不稳定的原因分析及改进措施

以韶关发电厂8号机组汽轮机为例，对高加水位运行不稳定原因进行了分析，并进行了有效的改进措施。     

Influence of aldehyde fixation on the morphology of endosomes and lysosomes: quantitative analysis and electron tomography

Cryoimmobilization is regarded as the most reliable method to preserve cellular ultrastructure for electron microscopic analysis, because it is both fast (milliseconds) and avoids the use of harmful chemicals on living cells. For immunolabelling studies samples have to be dehydrated by freeze‐substitution and embedded in a resin. Strangely, although most of the lipids are maintained, intracellular membranes such as endoplasmic reticulum, Golgi and mitochondrial membranes are often poorly contrasted and hardly visible. By contrast, Tokuyasu cryosectioning, based on chemical fixation with aldehydes is the best established and generally most efficient method for localization of proteins by immunogold labelling. Despite the invasive character of the aldehyde fixation, the Tokuyasu method yields a reasonably good ultrastructural preservation in combination with excellent membrane contrast. In some cases, however, dramatic differences in cellular ultrastructure, especially of membranous structures, could be revealed by comparison of the chemical with the cryofixation method. To make use of the advantages of the two different approaches a more general and quantitative knowledge of the influence of aldehyde fixation on ultrastructure is needed. Therefore, we have measured the size and shape of endosomes and lysosomes in high‐pressure frozen and aldehyde‐fixed cells and found that aldehyde fixation causes a significant deformation and reduction of endosomal volume without affecting the membrane length. There was no considerable influence on the lysosomes. Ultrastructural changes caused by aldehyde fixation are most dramatic for endosomes with tubular extensions, as could be visualized with electron tomography. The implications for the interpretation of immunogold localization studies on chemically fixed cells are discussed.