R-milling fixed-length clamp for upper tube seat plate spring of fuel assembly

Abstract

The invention particularly relates to an R-milling fixed-length clamp for an upper tube seat plate spring of a fuel assembly. The R-milling fixed-length clamp comprises a bottom plate, multiple grooves with the two ends communicating with each other in the length direction are formed in the bottom plate, and a pressing plate is detachably connected between every two adjacent grooves through a connecting piece. When the pressing plates are perpendicular to the two adjacent grooves, the pressing plates can be pressed on the two non-adjacent side walls of the two adjacent grooves. When the pressing plates are parallel to the two adjacent grooves, the side faces of the pressing plates make contact with the two adjacent side walls of the two adjacent grooves. The R-milling fixed-length clamp for the upper tube seat plate spring of the fuel assembly is compatible with R-milling fixed-length procedure machining of a pressing plate spring and a supporting plate spring, and operation is convenient; and factors such as batch production, production change and cutters are fully considered, production efficiency is improved, waste of the cutters, personnel and economy is reduced, and the clamphas very good economic value and is suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of manufacturing nuclear fuel parts, and in particular relates to a spring milling R fixed-length fixture for a tube seat plate on a fuel assembly. Background technique [0002] The fuel assembly upper tube seat plate spring is one of the important components of the upper tube seat assembly. Its main function is to provide an appropriate pressing force to keep the fuel assembly pressed against the upper surface of the core support lower plate during reactor operation to prevent water flow. Flushing causes components to jump and damages fuel components. [0003] The upper tube seat plate spring of the fuel assembly is composed of a compression plate spring and three supporting plate springs. The left end of the pressing plate spring is provided with a hole of diameter R, and the opening and the right end of the pressing plate spring are provided with chamfers. The left end of the support plate spring is pro...

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