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1. 发明授权

EP2975613B1 COOLING SYSTEM FOR STORED NUCLEAR FUEL 有权
公开(公告)号：EP2975613B1
公开(公告)日：2018-08-22
申请号：EP14764284.7
申请日：2014-02-21
申请人： Fujikura Ltd.
发明人： MOCHIZUKI, Masataka , RANDEEP, Singh , MATSUDA, Masahiro
IPC分类号： G21C19/08 , G21C19/07 , F28D15/02 , G21C19/32 , G21F5/10 , G21F9/36
CPC分类号： G21C19/32 , F28D15/0275 , F28D2015/0216 , G21C19/07 , G21C19/08 , G21F5/10 , G21F9/36
摘要： A cooling system for cooling nuclear fuel stored in a pool that can prevent a lowering of water level resulting from evaporation is provided. The cooling system cools the nuclear fuels 3 stored in a bottom of the pool 2 filled with cooling water 4. The cooling water 4 comprises an upper layer formed in a water surface as side in which a density of the cooling water 4 is low, a lower layer formed in the bottom side of the pool 2 in which a density of the cooling water 4 is high, and an intermediate layer in which a density of the cooling water 4 is in between those of the cooling waters 4 in the upper layer and the lower layer. A lower end 5a of a heat pipe 5 adapted to transport heat in the form of latent heat of working fluid is situated at a site where the heat is exchanged with the cooling water 4, and an upper 5b end of the heat pipe 5 is exposed to external air. The nuclear fuel 3 is stored within the lower layer.

2. 发明授权

EP2835609B1 LOOP THERMOSIPHON EMERGENCY COOLING SYSTEM 有权
公开(公告)号：EP2835609B1
公开(公告)日：2018-06-06
申请号：EP13772115.5
申请日：2013-04-02
申请人： Fujikura Ltd.
发明人： MOCHIZUKI, Masataka , SINGH, Randeep , MATSUDA, Masahiro
IPC分类号： F28D15/02 , G21C15/18
CPC分类号： F28D15/0266 , F28D15/06 , G21C15/12 , G21C15/18 , Y02E30/40
摘要： An emergency cooling system for cooling an object certainly and rapidly in case a temperature of the object is accidentally raised abnormally. A loop thermosyphon is formed by connecting an evaporating portion with a condensing portion through a vapor pipe and a return pipe in a manner to form a cyclic conduit. A condensable working fluid circulates within the loop thermosyphon to be evaporated by a heat of the cooling object at the evaporating portion, and to be condensed at the condensing portion to radiate the heat conducted from the cooling object. A switching valve is disposed on the return pipe to selectively allow the working fluid in a liquid phase to be returned from the condensing portion to the evaporating portion. Heat transfer pipes to which the heat of the cooling object is conducted are arranged in the evaporating portion. Heat transfer protrusions are formed on an inner wall of the heat transfer pipe to penetrate through dews of the working fluid, and a preheating portion to which the heat of the cooling object is conducted is formed within a portion of the return pipe connected to the heat transfer pipe.

3. 发明公开

EP2975613A1 COOLING SYSTEM FOR STORED NUCLEAR FUEL 有权
标题翻译： KÜHLSYSTEMFÜRGESPEICHERTEN KERNBRENNSTOFF
公开(公告)号：EP2975613A1
公开(公告)日：2016-01-20
申请号：EP14764284.7
申请日：2014-02-21
申请人： Fujikura Ltd.
发明人： MOCHIZUKI, Masataka , RANDEEP, Singh , MATSUDA, Masahiro
IPC分类号： G21C19/07 , F28D15/02 , G21C19/32 , G21F5/10 , G21F9/36
CPC分类号： G21C19/32 , F28D15/0275 , F28D2015/0216 , G21C19/07 , G21C19/08 , G21F5/10 , G21F9/36
摘要： A cooling system for cooling nuclear fuel stored in a pool that can prevent a lowering of water level resulting from evaporation is provided. The cooling system cools the nuclear fuels 3 stored in a bottom of the pool 2 filled with cooling water 4. The cooling water 4 comprises an upper layer formed in a water surface as side in which a density of the cooling water 4 is low, a lower layer formed in the bottom side of the pool 2 in which a density of the cooling water 4 is high, and an intermediate layer in which a density of the cooling water 4 is in between those of the cooling waters 4 in the upper layer and the lower layer. A lower end 5a of a heat pipe 5 adapted to transport heat in the form of latent heat of working fluid is situated at a site where the heat is exchanged with the cooling water 4, and an upper 5b end of the heat pipe 5 is exposed to external air. The nuclear fuel 3 is stored within the lower layer.
摘要翻译：提供了一种用于冷却存储在池中的核燃料的冷却系统，其可以防止由蒸发引起的水位降低。冷却系统冷却储存在池2的底部的充满冷却水4的核燃料3.冷却水4包括形成在水面中的上层，其中冷却水4的密度低，冷却水4的密度高的池2的底面形成的下层和冷却水4的密度在上层的冷却水4的密度之间的中间层和下层。适于以工作流体的潜热传递热量的热管5的下端5a位于与冷却水4交换热量的位置，并且热管5的上部5b端部露出到外部空气。核燃料3储存在下层内。

4. 发明公开

EP2835609A1 LOOP THERMOSIPHON EMERGENCY COOLING SYSTEM 有权
标题翻译：循环热虹吸应急冷却系统
公开(公告)号：EP2835609A1
公开(公告)日：2015-02-11
申请号：EP13772115.5
申请日：2013-04-02
申请人： Fujikura Ltd.
发明人： MOCHIZUKI, Masataka , SINGH, Randeep , MATSUDA, Masahiro
IPC分类号： F28D15/02 , G21C15/18
CPC分类号： F28D15/0266 , F28D15/06 , G21C15/12 , G21C15/18 , Y02E30/40
摘要： An emergency cooling system for cooling an object certainly and rapidly in case a temperature of the object is accidentally raised abnormally. A loop thermosyphon is formed by connecting an evaporating portion with a condensing portion through a vapor pipe and a return pipe in a manner to form a cyclic conduit. A condensable working fluid circulates within the loop thermosyphon to be evaporated by a heat of the cooling object at the evaporating portion, and to be condensed at the condensing portion to radiate the heat conducted from the cooling object. A switching valve is disposed on the return pipe to selectively allow the working fluid in a liquid phase to be returned from the condensing portion to the evaporating portion. Heat transfer pipes to which the heat of the cooling object is conducted are arranged in the evaporating portion. Heat transfer protrusions are formed on an inner wall of the heat transfer pipe to penetrate through dews of the working fluid, and a preheating portion to which the heat of the cooling object is conducted is formed within a portion of the return pipe connected to the heat transfer pipe.
摘要翻译：一种应急冷却系统，用于在物体温度意外升高异常的情况下，确实快速地冷却物体。环形热虹吸管通过蒸发管和回流管以形成循环管道的方式通过将蒸发部分与冷凝部分连接而形成。可冷凝的工作流体在环路热虹吸器内循环以通过蒸发部分处的冷却物体的热量而蒸发，并且在冷凝部分处冷凝以散发从冷却物体传导的热量。开关阀设置在回流管上，以选择性地允许液相工作流体从冷凝部分返回到蒸发部分。传导冷却物体的热量的传热管布置在蒸发部分中。传热突起形成在传热管的内壁上以穿透工作流体的结露，并且在返回管的与热量相连的部分内形成传导冷却物体的热量的预热部分输送管道。

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