The Structural Integrity and Leakage Tightness of Metallic and Non-metallic Piping Joints

金属和非金属管道接头的结构完整性和密封性

• 批准号: RGPIN-2021-03780
• 负责人: Bouzid, Hakim
• 金额: $ 2.84万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=742715
• 关键词: Structural; Integrity; Leakage; Tightness; Metallic

Global warming is currently one of the biggest universal challenges. The escape of primary pollutants such as sulphur dioxide, carbon monoxide, nitrogen oxides and volatile organic compounds has been the subject of a lot of criticism as these substances represent not only a major threat to the atmosphere and the environment but a high risk to human health and safety. A significant amount of these pollutants comes from pressure equipment leaks such as pressure vessels, piping, tube joints, flanges, valves and fittings. This research program unravels the complexity of the integrity and leakage tightness of the different connection styles of piping systems. The increasing demand for equipment requiring sealing compliance and the new strict environmental regulations on fugitive emissions have led to the development of a new sealing technology worldwide. With the ubiquitous use of non-metallic piping fabricated from polymeric and composite materials for the domestic, desalination, chemical and even nuclear power plant services, the need to develop tightness-based design methodologies of piping joints and connections and their qualification tools becomes a priority. The cutting-edge research in sealing technology is focused essentially on developing new sealing materials while their qualification tools and design procedures of piping joints in which they operate remain rudimentary. This research program treats the development of realistic experimental test procedures based on performance to qualify sealing materials and improve design procedures of piping joints. This is achieved by experimental testing that is conducted in our special purpose test rigs for gasketed and non-gasketed joints. The analytical and numerical modelling will also be developed to capture important trends. They will not only serve as predictive and optimization tools but coupled to the experimental work complement the fine-tuning of the parameters required for design and fabrication of the piping joints covered in this research program. To ensure the long-term reliability and safety of pressure vessels and piping systems, the candidate strives not only to develop realistic test procedures to qualify sealing products but implement the level of sophistication needed in modern design calculations of piping joints. With the development of new sealing and structural materials to accommodate the wide range of applications encountered in the pressure vessel and piping industry, there is a need to update existing standards. This research program seeks to address the glaring gaps and shortcomings of current code design procedures used in North America. It provides recommendations to improve piping joints conformity to regulations on the reduction of volatile organic compounds. This work is an effort to reduce health and environmental risks to Canadians and help the Canadian industry provide leading edge pressure vessel technologies and consulting with a highly qualified workforce.

全球变暖是目前全球面临的最大挑战之一。二氧化硫、一氧化碳、氮氧化物和挥发性有机化合物等主要污染物的逸出一直是许多批评的对象，因为这些物质不仅对大气和环境构成重大威胁，而且对人类健康和安全构成高风险。这些污染物的很大一部分来自压力设备泄漏，如压力容器、管道、管接头、法兰、阀门和配件。本研究项目揭示了管道系统不同连接方式的完整性和泄漏密封性的复杂性。对要求密封合规性的设备的需求不断增加，以及对逸散性排放的新严格环境法规，导致了全球新密封技术的发展。随着由聚合物和复合材料制成的非金属管道在国内、海水淡化、化学甚至核电站服务中的普遍使用，开发基于严密性的管道接头和连接设计方法及其鉴定工具的需求成为当务之急。密封技术的前沿研究主要集中在开发新的密封材料上，而它们所使用的管道接头的鉴定工具和设计程序仍处于初级阶段。本研究计划以性能为基础，发展切合实际的实验测试程序，以检验密封材料的性能，并改进管道接头的设计程序。这是通过在我们的特殊用途测试平台上对垫片和非垫片接头进行的实验测试来实现的。还将发展分析和数值模拟，以捕捉重要趋势。它们不仅可以作为预测和优化工具，而且与实验工作相结合，补充了本研究项目所涉及的管道接头设计和制造所需参数的微调。为了确保压力容器和管道系统的长期可靠性和安全性，候选人不仅要努力制定切合实际的测试程序，以使密封产品合格，而且要实现管道接头现代设计计算所需的复杂水平。随着新的密封和结构材料的发展，以适应压力容器和管道行业中遇到的广泛应用，有必要更新现有标准。这项研究计划旨在解决目前在北美使用的代码设计程序的明显差距和缺点。它提供了建议，以改善管道接头符合法规的减少挥发性有机化合物。这项工作旨在减少加拿大人的健康和环境风险，并帮助加拿大工业提供领先的压力容器技术，并为高素质的劳动力提供咨询。