Fluid handling – Systems
Patent
1986-11-03
1991-02-19
Rivell, John
Fluid handling
Systems
137561R, G21D 100
Patent
active
049934546
ABSTRACT:
A piping branch structure includes a branch pipe distributing an inflowing fluid to pipes in at least three directions, and one of the pipes face a direction of flow of the fluid, wherein a fluid inlet of one of the pipes protrudes into the branch pipe. By protruding a fluid inlet of a pipe which faces a direction of flow of the fluid into the branch pipe, the protruding pipe 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, whose structure is integral with that of a riser pipe, is provided so that the inner pipe extends toward a master tube side in a cross branch pipe. The inner pipe is provided holes and a flow-regulating plate. The quantity of cooling water circulating through the core of the reactor and the flow state of the cooling water in the pressure vessel are stabilized and balanced.
REFERENCES:
patent: 1097982 (1914-05-01), Luft
patent: 3103942 (1963-09-01), Sharp
patent: 3496261 (1970-02-01), Parr
patent: 4480656 (1984-11-01), Johnson
Kashiwai Shin-ichi
Kotani Koichi
Masuhara Yasuhiro
Yokomizo Osamu
Yokoyama Iwao
Hitachi , Ltd.
Rivell John
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