提高火力发电厂参数测量可靠性的实例

就某厂投入锅炉跟随自动中,多次出现退出锅炉自动,燃烧指令大幅上升,负荷跟着大幅上升的现象,进行分析,找出原因并采取了措施,取得良好的效果。     

可控制纤维取向的长玻纤增强塑料管材挤出机头

介绍笔者发明的两个关于长玻纤在线挤出增强管材机头的专利,描述了这两个机头的结构特点和工作原理,其特征为,机头可安装在现有通用的挤出机上,使用普通的聚合物粒料,在粒料塑化熔融后在线混入一定长度的玻纤,能使熔体分子和玻纤沿所挤出圆形管材的管壁螺旋取向。     

Fabrication and electrochemical performance of solid oxide fuel cell components by atmospheric and suspension plasma spray

The theory of functionally graded material (FGM) was applied in the fabrication process of PEN (Positive-Electrolyte-Negative), the core component of solid oxide fuel cell (SOFC). To enhance its electrochemical performance, the functionally graded PEN of planar SOFC was prepared by atmospheric plasma spray (APS). The cross-sectional SEM micrograph and element energy spectrum of the resultant PEN were analyzed. Its interface resistance was also compared with that without the graded layers to investigate the electrochemical performance enhanced by the functionally graded layers. Moreover, a new process, suspension plasma spray (SPS) was applied to preparing the SOFC electrolyte. Higher densification of the coating by SPS, 1.61%, is observed, which is helpful to effectively improve its electrical conductivity. The grain size of the electrolyte coating fabricated by SPS is also smaller than that by APS, which is more favourable to obtain the dense electrolyte coatings. To sum up, all mentioned above can prove that the hybrid process of APS and SPS could be a better approach to fabricate the PEN of SOFC stacks, in which APS is for porous electrodes and SPS for dense electrolyte.     

On-line temperature monitoring and process diagnosis of plasma sprayed coatings

On-line temperature monitoring of plasma sprayed coating is presented, which is based on IR pyrometery combined to robot trajectories. Temperature fields of the substrate before spraying and the deposited coating when the damage happens are taken to investigate the temperature fluctuation information. Experimental results demonstrate that coating damage always occurs in the temperature transition area of the substrate from the higher to the lower, as well as the higher temperature area. The temperature difference between the peak and the mean of the relevant regions is beyond 30-50 ℃ or even higher. This case provides the omen of coating damage and the focusing scopes for the process control of coating temperature in plasma spraying.     

广东罗定电厂1号机组EH油压低故障的处理

广东罗定电厂1号机组DEH调速系统在冲转过程中多次出现因为EH油压低导致汽轮机跳闸。根据故障现象排查出发生故障的几个可能原因,如:系统存在泄漏、泵故障、运行方式不当等。通过核实,寻找出发生故障的真实原因是:调门动作频繁造成机体很大的振动,导致卸荷阀针阀的旋转手柄弹开,使高压调门卸荷阀卸荷,造成油压下降。     

负极硫酸钡分散性对电池性能影响研究

采用不同添加方式在和制负极铅膏时添加硫酸钡.通过单片容量对比测试,以及整组电池容量、大电流放电、循环寿命测试,验证了硫酸钡分散性对电池性能的影响.     

注射模CAE软件Z-mold的Report模块及其网上发布功能

以BorlandDelphi为开发语言 ,在注射模CAE软件Z_mold的后处理功能Z_view中 ,添加Report模块并实现其网上发布功能 ,这样便于完成CAE分析结果的报告 ,便于结果的网上传输浏览并以实例介绍了客户如何根据自己的需求应用该模块。     

固体氧化物燃料电池核心部件的液料等离子熔射制备工艺

设计与开发了液料送粉系统,开展液料等离子熔射工艺制备SOFC电解质层的研究,并与大气等离子熔射制备结果进行比较.结果表明,致密电解质层的孔隙率1.61%,基本满足SOFC对电解质致密性的要求;较之于常规的大气等离子熔射制备工艺,液料等离子熔射制备的电解质层的厚度均匀性和致密性均得到了很大改善,有助于提高其导电性能;晶粒尺寸较小,有利于制备致密电解质涂层.