共查询到19条相似文献,搜索用时 156 毫秒
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介绍了某台9E燃气轮机因气封环损坏发生的主雾化空气泵损坏、辅助齿轮箱压力失衡导致箱体内轴承受损等故障现象,通过研究主雾化空气泵、辅助齿轮箱结构及工作原理,对可能的故障原因进行了分析,并给出机组运行及检修中应采取的措施建议,对燃气轮机用户具有参考价值。 相似文献
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以重质油为燃料的燃气轮机具有广阔的前途。这类燃气轮机的燃烧室中,为了得到满意的燃烧效果,需要提高燃油的雾化质量。因此往往采用空气辅助雾化,使用空气辅助雾化喷油咀。同一般的机械雾化喷油咀相比较,这种型式的喷咀多了一条高压雾化空气通道,它由一个空气旋流片加一个喷口组成。由于雾化空气具有很高的压力,常常为燃烧室空气压力的1.6—1.8倍,因而不能忽视气体的可压缩性。正因为这个原因,虽然 相似文献
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分析了新港热电厂燃气轮机雾化空气系统主雾化空气压缩机花键联轴器扭断和辅助雾化空气压缩机驱动皮带屡屡跑偏的两起故障的原因及事后对雾化空气系统的分析和改造。 相似文献
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燃气轮机空气进气系统的主要功能是对空气进行过滤以达到机组使用要求,降低机组运行风险,并控制机组进气噪音和压降在相应的标准范围内。由于海上平台高湿度、高盐度的工作环境和使用年限的增加,某平台3MW燃气轮机发电机组空气进气系统存在空气进气质量差、风道腐蚀穿孔、夏季暴雨和冬春季大雾天气时易湿堵造成异常停机、过滤器更换频繁、维修量大等问题。针对这些问题,对燃气轮机发电机组空气进气系统进行了全面技术分析,并结合当前空气过滤相关的新技术,对燃气轮机空气进气系统进行了改造,采用三级过滤系统改善了空气进气质量。改造方案的成功实施对当前海上平台3~30MW的燃气轮机发电机组空气进气系统运维工作有良好的借鉴意义,该改造方案并已成功在其他平台6MW燃气轮机机组上成功实施。 相似文献
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针对某分布式联合循环项目,利用EBSILON热力仿真平台建立了配置有燃气轮机进气冷系统的分布式联合循环机组热力计算模型性能,研究了燃气轮机进口空气降温幅度和机组性能随空气温度、空气湿度以及制冷量等因素的变化规律。结合当地环境条件和经济收益计算边界,分析了利用现有两台溴化锂冷水机组进行燃气轮机进气冷却条件下,机组性能的变化、投运系统后经济收益以及项目的投资回收期。研究结果表明,两台溴化锂冷水机进行燃气轮机进气冷却时,机组输出功率提升约1.20%~3.95%,机组热耗率降低约0.41%~1.01%,每年可产生经济效益约65.6万元,项目的投资回收期为2.97年。 相似文献
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本文提出一个新的设想,燃气轮机燃用含灰燃油,用爽汽雾化代替空气雾化,并使雾化蒸汽压力跟踪压气出口压力,以改善含灰燃油的燃烧. 相似文献
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为满足燃气轮机试验台配置模拟海洋大气环境装置的需求,设计了试验台盐雾系统。该系统通过蠕动泵输送燃气轮机各工况所需要的盐溶液,盐溶液输送至雾化器内雾化后形成盐雾,盐雾在燃气轮机进气道中与燃气轮机吸入的空气混合后进入压气机。在20%,35%,50%,60%,80%和100%等额定功率工况下对压气机进口空气含盐质量分数进行测量计算,压气机进气含盐质量分数均约为0.01×10-6,验证了系统满足燃气轮机全功率工况空气含盐质量分数的模拟要求。 相似文献
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对AE94.3A型燃气轮机燃气-蒸汽联合循环热力系统平衡进行研究进而发现,与同类型、同等级不同型号机组相比,AE94.3A型联合循环机组余热锅炉的排烟温度较高,排烟余热仍有进一步利用的空间。通过设计优化,扩大省煤器受热面,回收烟气余热加热给水,驱动热水型溴化锂制冷机制冷,用于机组满负荷调峰时的压气机进气冷却或厂房及办公区域空调供冷,对改善燃气轮机联合循环的运行性能,实现能源梯级利用,提高能源利用率和机组经济性运行起到了很大作用。 相似文献
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《International Journal of Hydrogen Energy》2023,48(12):4543-4550
The growth in demand for the production of heat and electricity requires an increase in fuel consumption by power equipment. At the moment, the most demanded thermal equipment for construction and modernization is gas turbine units. Gas turbines can burn a variety of fuels (natural gas, synthesis gas, methane), but the main fuel is natural gas of various compositions. The use of alternative fuels makes it possible to reduce CO2 and NOx emissions during the operation of a gas turbine. Under conditions of operation of thermal power plants at the wholesale power market, it becomes probable that combined cycle power units, designed to carry base load, will start to operate in variable modes. Variable operation modes lead to a decrease in the efficiency of power equipment. One way to minimize or eliminate equipment unloading is to install an electrolysis unit to produce hydrogen.In this article the technology of “Power to gas” production with the necessary pressure at the outlet of 30 kgf/cm2 (this pressure is necessary for stable operation of the fuel preparation system of the gas turbine) is considered. High cost of hydrogen fuel during production affects the final cost of heat and electric energy, therefore it is necessary to burn hydrogen in mixture with natural gas. Burning a mixture of 5% hydrogen fuel and 95% natural gas requires minimal changes in the design of the gas turbine, it is necessary to supplement the fuel preparation system (install a cleaning system, compression for hydrogen fuel). In addition, the produced hydrogen can be stored, transported to the consumer. For the possibility of combustion of a mixture of natural gas and hydrogen fuel in a gas turbine the methodology of calculation of thermodynamic properties of working bodies developed by a team of authors under the guidance of Academician RAS (the Russian Academy of Sciences) V.E. Alemasov has been adapted, resulting in a program that allows to obtain an adequate mathematical model of the gas turbine. The permissible range of the working body temperature is limited to 3000 K. This paper presents the developed all-mode mathematical model of a gas turbine.On the basis of mathematical modeling of a gas turbine, a change in the main energy and environmental characteristics is shown depending on the composition of the fuel gas. Adding 5% hydrogen to natural gas has little effect on the gas turbine air treatment system, the flow rate remains virtually unchanged. CO2 emissions decrease, but there is an increase in the amount of H2O in the turbine exhaust gases. 相似文献
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