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2. 发明公开

EP0146134A1 Piping branch structure 失效
标题翻译： Abzweigrohrstruktur。
公开(公告)号：EP0146134A1
公开(公告)日：1985-06-26
申请号：EP84115481.8
申请日：1984-12-14
申请人： HITACHI, LTD.
发明人： Masuhara, Yasuhiro , Yokomizo, Osamu , Kotani, Koichi , Kashiwai, Shinichi , Yokoyama, Iwao
IPC分类号： F16L41/02
CPC分类号： F16L41/021 , Y10T137/8593 , Y10T137/85938
摘要： The present invention resides in a piping branch structure comprising a branch pipe (9) distributing an inflowing fluid to pipes (10, 12) in at least three directions, and one of said pipes (12) facing a direction of flow of said fluid, wherein a fluid inlet (19) of said one of pipes is protruded into said branch pipe. By protruding a fluid inlet (19) of a pipe (17) which faces a direction of flow of the fluid into the branch pipe (9), the protruding pipe (17) act as obstacles, thus no vortex is generated and the non-vortex flow state can be maintain. In case of piping of recirculating system of a reactor, an inner pipe (17) whose structure is integral with that of a riser (12) pipe is provided so that it extends toward a master tube (8) side in a cross branch pipe (9). The inner pipe is provided holes (18) and a flow-regulating plate (21, 22). The quantity of cooling water circulating through the core of the reactor and the flow state of the cooling water in the pressure vessel (1) are stabilized and balanced.
摘要翻译：本发明在于一种管道分支结构，其包括在至少三个方向上将管道（10,12）分配不均匀流体的分支管道（9）和面向所述流体的流动方向的所述管道（12）中的一个，其中所述一个管道的流体入口（19）突出到所述分支管中。通过将与流体的流动方向相对的管（17）的流体入口（19）突出到分支管（9）中，突出管（17）作为障碍物起作用，因此不产生涡流，涡流状态可以维持。在反应堆的再循环系统的管道的情况下，其结构与提升管（12）管的一体的内管（17）设置成使得其在横支管（8）侧朝向主管（8）侧延伸 9）。内管设有孔（18）和流动调节板（21,22）。通过反应器的核心循环的冷却水的量和压力容器（1）中的冷却水的流动状态被稳定和平衡。

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