共查询到20条相似文献,搜索用时 312 毫秒
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在机组停运前向水汽系统一次性加入“停用防诱蚀药剂”--DAK,能在机组的金属表面形成一种防锈膜,该膜具有可靠和有效的耐锈蚀性能。该新工艺在遵义发电总厂8号机组的成膜中,达到了保护停用检修机组的目的,防止了大气锈蚀,安全可靠性得以提高,延长了设备使用寿命。 相似文献
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介绍了 SW-ODM高效成膜按防蚀剂在开封火电厂 4号机组大修停用保护中的应用。重点叙述了该方法的特点、应用及实际效果 ,并作了分析 ,提出了影响成膜效果的因素以及如何正确利用这一技术 相似文献
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WHEC—11型防腐溶垢成膜剂的应用研究 总被引:2,自引:0,他引:2
通过高压釜实验确定WHEC-11型停炉保护缓蚀剂现场应用时的最佳工艺参数。此缓蚀剂与传统缓蚀剂相比,成膜快、用量少,还可溶解老垢,且形成的膜不影响锅炉启动时的汽水品质。 相似文献
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介绍了热力设备停用腐蚀的发生、危害及保护方法,详述了N-309停用保护缓蚀剂的缓蚀机理和应用。实践证明,采用N-309停用保护缓蚀剂是一种保护范围广、效果好、操作简便省时省力适用性很强的保护方法。 相似文献
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特高压线路工频参数测试干扰分析是选择适合工频参数测试方法及测试结果分析的重要基础。测试了1 000 kV皖南-浙北特高压线路正序和零序参数测试期间的干扰电压信号,分析了其频谱特征;在此基础上,通过与正序参数仿真计算值的对比分析了正序参数实际测试偏差。结果表明:皖南-浙北特高压同塔双回线路工频参数测试期间,干扰电压存在“三相不平衡性及时变性”的特点;工频法和异频法2种不同方法得到的线路参数测试结果存在一定差异;干扰电压“时变”时,线路工频参数测试宜采用异频法。 相似文献
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《国外电子测量技术》2014,(10)
正Qingdao,China7.16-19,2015The International Conference on Electronic MeasurementInstruments(ICEMI)is the world’s premier conference dedicated to the electronic measurement and test of devices,boards and systems that is covering the complete cycle from design,verification,test,diagnosis,failure analysis and process of manufactory and products 相似文献
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《国外电子测量技术》2014,(9)
正Qingdao,China7.16-19,2015The International Conference on Electronic MeasurementInstruments(ICEMI)is the world's premier conference dedicated to the electronic measurement and test of devices,boards and systems that is covering the complete cycle from design,verification,test,diagnosis,failure analysis and process of manufactory and products 相似文献
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S. Y. Wu B. N. Tran F. Y. Davis C. L. Trent D. L. Edberg W. A. Geideman 《Integrated ferroelectrics》2013,141(3):281-291
Abstract Smart materials of lead-zirconate-titanate (PZT) piezoelectric ceramics have attracted attention in recent years for active vibration control, acoustic noise suppression, health monitoring and damage assessment. We at McDonnell Douglas Aerospace have been studying these ceramics for use as sensors and actuators in various space and aircraft structures. In this paper, we will report results of a recent study on active vibration control using monomorph PZT actuators. The experiments were performed on thin aluminum cantilever beams. Collocated and non-collocated sensors and actuators were employed. Two control techniques: the classical velocity feedback and adaptive feedback controls, were investigated. We have obtained significant damping and broadband vibration attenuation of greater than 30 dB using the classical control with the single-input single-output feedback approach. A 24 dB reduction has also been achieved using the adaptive control with the multiple-input single-output approach. Detailed experimental methods and results will be described. 相似文献
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电站锅炉停用保护剂多采用十八胺和表面活性胺。对这2种停用保护剂进行了应用效果对比研究,即对湿冷机组、空冷机组采用十八胺或表面活性胺、有无凝结水精处理系统等6台机组停机和启动过程中给水、主蒸汽和凝结水的氢电导率变化情况进行分析。研究结果表明:在停机过程和启动过程,2种保护剂均会在水汽系统中发生部分分解,导致水汽系统的氢电导率显著升高;表面活性胺和十八胺比较,使用前者,机组启停机过程可保持凝结水精处理系统正常投运,因而可使水汽质量迅速达标,对机组安全运行有利,因此推荐采用表面活性胺作为锅炉停用保护剂。 相似文献
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