灵活操作的汽轮机部件的返工和修理选择

IF 1.4 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Frank Biesinger, Huascar Lorini, Ritesh Shah
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引用次数: 0

摘要

可再生能源在电网中的渗透增加,加速了将传统的化石能源从传统的基本负荷运行向更灵活的运行机制转变的需求。在启动次数、每年运行小时数和负荷水平变化方面,运行模式发生了巨大变化。这导致运行设备的热瞬变增大,从而增加低周疲劳损伤。为了保证汽轮机部件的持续完整性,必须应用剩余寿命分析方法对汽轮机部件的寿命状态进行评估。根据寿命消耗的数量和潜在裂纹发现的范围,可能有不同的部件维修选择。返工或修理选项可分为两大类,即冷返工和热返工。这两个选项也可以连续执行。在热返工的情况下,所有的返工或修理选项都提供了通过应用具有改进应力场甚至更优质材料的剖面来改善组件应用的机会。返工/再调节的目的是确保汽轮机部件适合未来的运行。这确保了工厂能够通过精心定制的翻新和返工,在能源行业中提供更灵活的运营。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rework and Repair Options for Steam Turbine Components Subject to Flexible Operation
Abstract The increase in renewable energy penetration on the grid has accelerated the need to transition conventional fossil-based energy sources from their traditional base load operation to more flexible operational regimes. The mode of operation changed dramatically in terms of number of starts, operating hours per annum and variation in load level. This results in greater thermal transients on operational equipment leading to an increase in Low Cycle Fatigue damage. To ensure the continued integrity of the steam turbine components, it is essential to assess the lifetime status by applying Residual Lifetime Analysis methods. Depending on the amount of lifetime consumption and the extend of potential crack findings, different component repair options are possible. The rework or repair options can be divided into two main groups, namely cold- and hot-rework. These two options can also be carried out consecutively. All rework or repair options provide the opportunity to improve the application of a component by applying profiling with improved stress fields and even superior materials, in the case of hot rework. The aim of the rework / re-conditioning is to ensure that the steam turbine component is suitable for future operation. This ensures that plants are well placed to deliver more flexible operation in the energy industry through carefully tailored refurbishments and reworks.
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来源期刊
CiteScore
3.80
自引率
20.00%
发文量
292
审稿时长
2.0 months
期刊介绍: The ASME Journal of Engineering for Gas Turbines and Power publishes archival-quality papers in the areas of gas and steam turbine technology, nuclear engineering, internal combustion engines, and fossil power generation. It covers a broad spectrum of practical topics of interest to industry. Subject areas covered include: thermodynamics; fluid mechanics; heat transfer; and modeling; propulsion and power generation components and systems; combustion, fuels, and emissions; nuclear reactor systems and components; thermal hydraulics; heat exchangers; nuclear fuel technology and waste management; I. C. engines for marine, rail, and power generation; steam and hydro power generation; advanced cycles for fossil energy generation; pollution control and environmental effects.
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