基于热胀冷缩原理的TACR压力管与排管间非能动热开关设计

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Design of Passive Heat-Switch between Pressure Tube and Calandria Tube Based on the Principle of Metal Expand on Heating and Contract on Cooling of TACR

摘要: 提出了一种可应用于钍基先进CANDU型反应堆(TACR:Thorium-based Advanced CANDU Reactor)压力管与排管间的非能动热开关设计方案。该方案应用金属的热胀冷缩性质,通过热胀冷缩部件推动开关滑块移动来控制压力管与排管间的传热介质种类,以改变压力管与排管之间的热阻。该方案在满足TACR正常运行工况下对压力管和排管间高热阻要求的同时,能够在事故工况下降低二者之间的热阻导出余热。由于利用了金属热胀冷缩性质作为推动力,并利用改变传热介质种类来改变热阻,因此,高度的可靠性和有效性是该方案设计的特点。
- 热开关 /
- 自复位 /
- 非能动 /
- TACR
Abstract: The paper presents a design of passive heat-switch between pressure tube and calandria tube of Thorium-based Advanced CANDU Reactor（TACR）.The heat switch is designed on the principle of heated metal expanding and contract on cooling.The valve driven by a metal stick controls the type of heat conductor between pressure tube and calandria tube.The design meets the requirement of high heat transfer resistance in normal operation and low heat transfer resistance to remove the residual heat in accident.The design is reliable and effective.
- Heat-switch /
- Self reposition /
- Passive /
- TACR