Damping of pressure pulsations in CANDU fuel bundles

CANDU 燃料棒束中压力脉动的阻尼

基本信息

批准号：
578558-2022
负责人：
Mohany, AtefA
金额：
$ 2.1万
依托单位：
University of Ontario Institute of Technology
依托单位国家：
加拿大
项目类别：
Alliance Grants
财政年份：
2022
资助国家：
加拿大
起止时间：
2022-01-01 至 2023-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752758
关键词：
Damping pressure pulsations CANDU fuel

项目摘要

Piping systems used in industrial applications such as power stations and natural gas pipelines are liable to generate pressure pulsations. These often arise from the use of reciprocating pumps and/or the dynamicinstability of valves, which can act as sources of unwanted noise and vibration. If the frequencies of thesepulsating sources correspond to the resonant frequencies of the piping system, a very dangerous acousticresonance condition can result. This can produce extremely large pressure fluctuations, often several times thedynamic head of the flow in the main pipe, as well as substantial vibrations in the piping system andsurrounding components. Almost all of the acoustic damping devices that exist in literature to date have beendeveloped to mitigate pressure pulsations in ducts and piping systems that contain gas flow. However, theflow-acoustic conditions in water flow are significantly different from air flow and thus the applicability andthe effectiveness of these damping devices to mitigate pressure pulsations in CANDU fuel bundles is unclear.To bridge the knowledge gap and advance the current state-of-the-art, the main objective of this project is toinvestigate the generation and attenuation of acoustic pressure pulsations in water filled piping system anddevelop preliminary design guidelines for the implementation of acoustic dampers in piping systems of nuclearpower plants to prevent the occurrence of acoustic pressure pulsations.

电站和天然气管道等工业应用中使用的管道系统有可能产生压力脉动。这些通常是由于往复泵和/或阀门动态性的使用而产生的，阀门可以充当不必要的噪声和振动的来源。如果驱逐源的频率对应于管道系统的谐振频率，则可能会导致非常危险的声音呼吸条件。这可能会产生极大的压力波动，通常几次在主管道中流动的动态头部，以及管道系统和符合组件的实质性振动。迄今为止，文献中存在的几乎所有声学阻尼设备都在减轻包含气体流动的管道和管道系统中的压力搏动。然而，水流中的流动声条件与空气流有显着不同，因此这些阻尼装置在减轻CARDU燃料捆绑中的压力脉动的适用性和有效性尚不清楚。弥合知识差距并提高最新的最新状态。 -Art，该项目的主要目的是对水填充管道系统中的声压力脉动的产生和衰减进行研究，并为在核能工厂的管道系统中实施声学抑制剂的实施初步设计指南，以防止发生声压力脉动的发生。