Patent Number: 051732513
Section: claims

1. In a gas-cooled, high-temperature nuclear reactor with a circular outline, a mixing apparatus for a plurality of turbulently flowing fluid flows varying in at least one of temperature and composition, comprising a horizontal, annular mixing chamber having a plurality of sectors, horizontal annular conduits for receiving at least one fluid flow, a plurality of vertical conduits being disposed above said sectors and having upper ends connected to said horizontal annular conduits and lower ends connected to said mixing chamber, an outlet opening communicating with said mixing chamber, said sectors having a plurality of bores formed therein in the vicinity of said outlet opening for receiving absorber material, and one of said sectors forming a plurality of deflector elements for deflecting the at least one fluid flow into said mixing chamber. 2. The mixing apparatus according to claim 1, including an at least partly star-shaped distributor distributing the fluid flows to a plurality of said radial deflector elements. 3. The mixing apparatus according to claim 1, wherein said deflector elements are widened in radial direction toward the outside. 4. The mixing apparatus according to claim 1, including a plurality of single-conduit and radial deflector elements disposed beside said mixing chamber. 5. The mixing apparatus according to claim 1, wherein said deflector elements have a curved wall in a cross-sectional plane of said mixing chamber. 6. The mixing apparatus according to claim 5, wherein said mixing chamber has a given full height, and said mixing chamber is joined over said given full height to said the deflector elements. 7. The mixing apparatus according to claim 5, wherein said mixing chamber is horizontally oriented and has a cover with outer vertical openings partly penetrating said cover above said mixing chamber. 8. The mixing apparatus according to claim 1, wherein the high-temperature nuclear reactor operates on the pebble bed principle, and said sectors form a central pebble discharge conduit. 9. The mixing apparatus according to claim 8, wherein said sectors have vertical bores formed therein in the vicinity of said pebble discharge conduit for receiving absorber material.