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Lower tube socket with function of filtering foreign matters

A function and tube seat technology, applied in the field of the lower tube seat of the reactor fuel assembly, can solve the problems of limited rigidity and strength of the filter part, collapse, excessive deformation of the lower tube seat, etc., and achieve excellent coolant pressure drop and reduce coolant pressure. The effect of reducing and improving structural strength

Active Publication Date: 2013-10-02
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing lower pipe seat, the rigidity and strength of the filter part structure are limited, which has a negative impact on the structural strength and rigidity of the lower pipe seat. Under strict load conditions, it is easy to cause excessive deformation of the lower pipe seat, and even collapse

Method used

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  • Lower tube socket with function of filtering foreign matters
  • Lower tube socket with function of filtering foreign matters
  • Lower tube socket with function of filtering foreign matters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1-8 shown. A lower pipe seat with the function of filtering foreign matter, comprising several blades 8 whose axes are parallel to each other and several rib assemblies 9 whose axes are parallel to each other, the axes of the rib assemblies 9 and the axes of the blades 8 are perpendicular to each other; the rib assembly 9 It is composed of two symmetrical upper ribs 91 and lower ribs 92, and the opposite surfaces of the upper ribs 91 and the lower ribs 92 are respectively provided with slots 20 corresponding to the number of blades 8; the blades 8 include several convex directions Consistent protruding parts 14, connected by a straight section 16 between adjacent two protruding parts 14, the upper end surface and the lower end surface of the straight section 16 are all provided with grooves 15, and the opening direction of the groove 15 is in line with that of the protruding parts 14. The protruding directions of the ribs are perpendicular to each other...

Embodiment 2

[0054] The difference between this embodiment and Embodiment 1 is that the protruding member 14 includes a planar member and a protrusion arranged on one side of the planar member. As for the protrusion, it is generally preferred to use a protrusion whose protrusion surface is streamlined.

Embodiment 3

[0056] The difference between this embodiment and Embodiment 1 is that the protruding member 14 includes a planar member and a protrusion arranged on one side of the planar member. As for the protrusion, it is generally preferred to use a protrusion whose raised surface is m-shaped.

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Abstract

The invention discloses a lower tube socket with a function of filtering foreign matters. The lower tube socket comprises a plurality of blades having mutually paralleled axles and a plurality of fillet assemblies having mutually paralleled axles, the axles of the fillet assemblies are vertical to the axles of the blades; the fillet assembly is composed of two symmetric fillets, the opposite facesof the two fillets are respectively provided with clamping slots having number corresponding to that of the blades, the blades are clamped in the clamping slots; the blade comprises a plurality of bulges having the same convex directions, two adjacent bulges are connected by a straight section, the upper end surface and the lower end surface of the straight section are provided with grooves, theopening direction of the groove is vertical to the convex direction of the bulge, and the fillet assembly is clamped in the groove. The lower tube socket disclosed by the invention is good in structure strength, filtering ability and coolant pressure drop.

Description

technical field [0001] The invention belongs to a lower nozzle of a reactor fuel assembly, in particular to a lower nozzle with the function of filtering foreign matter. Background technique [0002] The lower nozzle is the lower structural part of the reactor fuel assembly, which provides support, positioning and distribution of coolant flow for the fuel assembly. In addition, since the coolant flows through the fuel assembly at a very fast speed during the operation of the reactor, the coolant may The contained foreign matter will damage the fuel rods, resulting in the risk of fuel rod breakage. In order to limit this risk, the lower nozzle needs to have the function of filtering foreign matter to prevent foreign matter from flowing into the fuel assembly. [0003] In the existing lower pipe seat, the rigidity and strength of the filter part structure are limited, which has a negative impact on the structural strength and rigidity of the lower pipe seat. Under strict load ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/33G21C3/322
CPCG21C3/322G21C3/3305Y02E30/30G21C3/3206
Inventor 粟敏冯琳娜陈杰茹俊雷涛青涛雍泾肖忠
Owner NUCLEAR POWER INSTITUTE OF CHINA
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