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公开(公告)号：US4420458A
公开(公告)日：1983-12-13
申请号：US258639
申请日：1981-04-29
申请人： Thomas G. Dunlap , William G. Jameson, Jr. , Carl R. Mefford , Harold L. Nelson , James E. Cearley
发明人： Thomas G. Dunlap , William G. Jameson, Jr. , Carl R. Mefford , Harold L. Nelson , James E. Cearley
摘要： In a nuclear fuel assembly having a coolant conducting or water tube which also retains the spacers in axial position, the fuel rods experience greater axial growth with exposure than the water tube creating a risk that the water tube might become disengaged from the supporting tie plates. An arrangement for preventing such disengagement is described including lengthened end plug shanks for the water tube, a protective boss surrounding the lower end plug shank to protect it from flow induced vibration, a conical seat for the lower end plug and an arrangement for limiting upward movement of the water tube.
摘要翻译： 在具有还将间隔件保持在轴向位置的冷却剂导管或水管的核燃料组件中，与水管相比，燃料棒暴露于轴向增长，导致水管可能从支撑连接板脱离。 描述了一种用于防止这种脱开的装置，其包括用于水管的加长的端塞柄，围绕下端塞柄的保护凸起以防止流动引起的振动，用于下端塞的锥形座和用于限制向上运动的装置 的水管。
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公开(公告)号：US4314884A
公开(公告)日：1982-02-09
申请号：US40997
申请日：1979-05-21
摘要： A fuel assembly for a nuclear reactor including a plurality of fuel rods held in spaced, parallel position between upper and lower tie plates and retained in lateral position by intermediate spacers and having a water tube in lieu of a fuel element in one or more of the rod positions, the water tubes having an outside diameter greater than that of the fuel rods and the spacer springs in the spacer cells of the water tubes being modified to accommodate the larger diameter of the water tubes.
摘要翻译： 一种用于核反应堆的燃料组件，包括多个燃料棒，所述多个燃料棒保持在上下连接板之间的间隔开的平行位置，并通过中间间隔件保持在横向位置，并且具有代替燃料元件的一个或多个 杆位置，具有大于燃料棒的外径的水管和水管的间隔室中的间隔弹簧被修改以适应较大直径的水管。
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