在设计核电站时,须对安全壳内外的高能与中能管道进行发生假想性断管事件及其后续效应的设计分析.这些管道一旦发生破裂,泄漏的高能量流体将对管道施加很大的横向力,使管道产生高速运动,即管道甩动.这种高速运动的管道可能会对周围结构造成严重破坏,因而引起世界上各主要发展核电国家的重视,并开展了大量的研究工作.详细叙述常规岛侧高中能管道断管位置的判定准则、假想破口的类型、断管的后续影响及其防护等.还进一步介绍有关管道断裂甩动问题的各种计算方法,如力矩平衡法、能量平衡法、有限元法等.%During the design of a nuclear power plant,Engineers must clarify the dcsign bases and define the protective measures to ensure the containment and other systems and equipment are adequately protected from adverse consequences associated with the postulated rupture of high-energy piping or crack of moderate-energy piping both inside and outside the containment. When a rupture occurs, the expused high-energy liquid causes a strong transverse force which prompts pipes to run at a high speed, resulting in what is referred to as the pipe whip phenomenon. The pipe whip could cause severe damages to the associated structures. All the countries wiih nuclear power have paid tremendous attention to this issue and conducted a great deal of research on this issue.This paper describes the design bases of determining the position of a pipe rupture or pipe crack for high-energy piping and moderate-energy piping in conventional islands,and also expounds the postulated crevasse type,consequences of the pipe rupture and protection measures. Furthermore, this paper presents several means to solve the pipe whip problem, such as moment balance, energy balance and finite element.
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