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铜管在汽轮机凝汽器中使用非常频繁,凝汽器铜管腐蚀泄漏严重威胁到机组安全经济运行;据资料统计,因凝汽器铜管腐蚀泄漏造成汽轮机停机的事故非常多。在凝汽器运行过一程中保护凝汽器铜管少受腐蚀或不受腐蚀就显得非常重要。 相似文献
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分析了广州瑞明电厂2台125MW凝汽式汽轮发电机组凝汽器腐蚀原因,并对采用钛管代替铜管的可行性、改造的技术、施工方案、经济性及应注意的问题进行了分析阐述。改造效果明显,为相近水质的电厂凝汽器或换热器改造提供了参考。 相似文献
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电厂凝汽器黄铜管腐蚀机理研究 总被引:6,自引:0,他引:6
分析电厂凝汽器铜管腐蚀失效情况。全面探讨铝黄铜凝汽器铜管腐蚀机理,及其影响因素。提出一定的防护措施及方法。对于解决目前我国电厂仍然大量存在的铜管腐蚀现象及事故,电厂的安全、经济、高效的运行有着一定的作用。 相似文献
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循环冷却水系统的节能 总被引:7,自引:0,他引:7
加强循环冷却水系统的管理,提高循环冷却水的浓缩倍数,对凝汽器铜管实施镀膜保护,对水质添加防腐阻垢剂和杀菌剂,避免凝汽器铜管的结垢、腐蚀和粘泥故障,降低了发电水耗,延长了设备使用寿命,取得了显著的节能效果。 相似文献
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中水对凝汽器铜管腐蚀性强,导致凝汽器频繁发生泄漏。通过采用TP316L不锈钢管替代铜管,并做好不锈钢管的安装及运行维护工作,解决了中水对凝汽器管的腐蚀问题,保证了凝汽器安全运行。 相似文献
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为满足电厂需要,将与25MW汽轮机配套的N-2000-Ⅰ型淡水冷却的凝汽器改型设计成N-2000-Ⅱ型含砷铝黄铜管或白钢管凝汽器和N-200-Ⅲ型钛管凝汽器。介绍了上述三种型式凝汽器的结构。并结合深圳A电厂和浙江B电厂的条件,就选用合适管材提出意见。经过投运两年多来的验证,认为中小功率凝汽式汽轮机采用无污染清洁海水冷却时,配置含砷铝黄铜管(HAL77-2A)或白铜管(B10)的铜管板凝汽器具有良好的经济效益。 相似文献
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《International Journal of Hydrogen Energy》2022,47(63):26789-26797
The issues related to the reliability of hydrogen engines of unmanned vehicles and increasing the efficiency of using hydrogen as fuel when using the method of its production during the decomposition of hydrogen-containing molecules of liquid-phase organic compounds in a plasma discharge under the action of intense ultrasonic exposure are considered. Experiments have shown that as a result of decomposition in the acoustoplasma discharge of liquid hydrocarbons, solid-phase carbon-containing products are formed, chemical transformations occur in the liquid phase and hydrogen-containing combustible gas is formed. Hydrogen-containing gas can be used as fuel immediately after synthesis, i.e. it does not require separation, since in addition to hydrogen it contains only impurities of CO2 and water vapor. The purpose of the study is to formalize the basic conditions for tightening the control of mutual compliance with the efficiency of hydrogen engines of the same series in the conditions of their mass production. Methods of mathematical statistics and hardware-software modeling were used in the study. The term “unerroric of quality mutual compliance control” is introduced to describe a set of hardware and software tools for such control. The principle of in-depth testing of the technical condition of such engines of one series is described in a multidimensional formulation of the quality control problem for three of their operating parameters at once. The conditions for increasing the mutual correspondence of the measured values of such parameters in the conditions of serial production of hydrogen engines are formalized. 相似文献
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世界发电燃料结构在不断的转换过程中。18世纪60年代从薪柴转到煤炭,19世纪到20世纪初大量发展燃煤电厂;20世纪20年代又从煤炭转向石油和天然气,20年代上半叶又大量发展燃油电厂;20世纪末由于天然气生产的发展,天然气因环境影响小,受到工业发达国家的青睐,加速发展天然气电厂。我国70年代初和90年代曾两次发展燃油电厂,由于石油危机和石油价格暴涨而受到制约,不得不实行以煤代油,改造燃油电厂。现在似乎认为燃油电厂不能再搞,但又出现发展燃气电厂的热流,发展燃气电厂确实是当今的世界潮流,但是同当年发展燃油电厂一样,要研究是否符合中国的国情? 相似文献
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本文从新型活塞设计的趋势及其对活塞车床的功能要求,讨论活塞车床的设计方案,并从机床功能、造型和宜人性上进行分析。 相似文献
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《Energy Conversion and Management》1988,28(2):161-169
The daily chronological variation of the solar heat gain through fenestration was studied for different orientations, locations, and months. Then, a method was presented to estimate the alleviation of the solar load achievable by external shading.This method was applied to investigate the effect of external shading for different exposures. The two indices, “Effectiveness” and “Efficiency”, were introduced to describe the theoretically possible solar load reduction.The feasibility of external shading, as a means of lowering the cooling load, was assessed on different exposures and at different latitudes. The assessment was based on two counterweighing criteria. These are the actually gained saving in the cooling load and the size of the required shading device. 相似文献
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随着汽车工业的发展,发动机的工况趋向于高压、高速改进。对发动机心脏零件之一的活塞也有越来越高的要求。在保留传统铝合金材料的同时,通过表面处理来改善和提高铝合金材料在发动机工况下的性能是一种非常重要的手段。 相似文献
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为适应建筑业可持续发展的需要,提出了对投标方进行施工绿色性预评价的观点,即通过分析招标控制价(或标底)和投标报价,计算出投标方施工节约资源能源的预算费用值,利用该值可进行资源能源消耗预评价;同时,通过分析投标技术资料判断其施工环境保护措施的合理性、有效性,进而对施工环境影响进行打分评价,借助于建筑安装工程费中的环境保护费,可将打分转换为施工环境保护的费用当量值,利用该值可进行环境影响预评价;将两种费用值相加即可得到施工绿色性费用当量值,利用该值可实现对施工资源能源消耗和环境影响的统一评价,有助于选择绿色施工水平较高的承包商. 相似文献