阅读说明：本技术 模拟核电厂rpv换热特性的三维试验系统及三维试验装置 (Three-dimensional test system and three-dimensional test device for simulating RPV heat exchange characteristics of nuclear power plant ) 是由 展德奎 梁峻铭 陈鹏 夏少雄 张会勇 张雷 于 2019-12-25 设计创作，主要内容包括：一种模拟核电厂RPV换热特性的三维试验系统及三维试验装置(10),三维试验装置(10)包括筒体段(11)、连接在筒体段(11)下端的半球形的下封头(12)、设置在下封头(12)内的加热组件；其中,筒体段(11)为非加热段；加热组件设置在下封头(12)内形成三维加热段。该三维试验系统用于模拟核电厂严重事故条件下高温的堆芯熔融物传到RPV壁面,并且RPV壁面外部流动过程,从而研究在三维流动条件下RPV外壁面不同位置CHF分布及三维冷却水流动特性,从而为研究严重事故缓解系统,即堆坑注水系统的有效性提供数据支持。(A three-dimensional test system and a three-dimensional test device (10) for simulating RPV heat exchange characteristics of a nuclear power plant are disclosed, wherein the three-dimensional test device (10) comprises a cylinder section (11), a hemispherical lower end enclosure (12) connected to the lower end of the cylinder section (11), and a heating assembly arranged in the lower end enclosure (12); wherein the barrel section (11) is a non-heating section; the heating assembly is arranged in the lower end enclosure (12) to form a three-dimensional heating section. The three-dimensional test system is used for simulating the transmission of high-temperature reactor core melt to the RPV wall surface under the condition of a severe accident of a nuclear power plant and the external flowing process of the RPV wall surface, so that the CHF distribution at different positions of the RPV outer wall surface and the flowing characteristic of three-dimensional cooling water under the condition of three-dimensional flowing are researched, and data support is provided for researching the effectiveness of a severe accident relieving system, namely a pit filling system.)