Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Grillwork for pressurized water reactor fuel assembly

A technology for fuel assemblies and pressurized water reactors, which is applied to reactor fuel elements, reactors, and greenhouse gas reduction, etc., can solve the problems of inability to limit internal strips, poor structural rigidity, poor strength, and thicker plate thickness, so as to avoid cracks. and deformation, increased stiffness, high processing efficiency

Inactive Publication Date: 2020-04-10
JILIN AGRICULTURAL UNIV
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among them, in order to solve the problems of many defects in the existing grid manufacturing process, complex process, and poor manufacturing efficiency; and to solve the defects of the existing grid strip design structure rigidity and poor strength, to solve the existing grid outer strips when assembling The problem that the inner strip cannot be well limited; on the inner surface of the outer strip, there are a plurality of bosses distributed in two rows at equal intervals, and the outer strip at the junction of the boss and the outer strip Bring the plate thickness setting to thicken;

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Grillwork for pressurized water reactor fuel assembly
  • Grillwork for pressurized water reactor fuel assembly
  • Grillwork for pressurized water reactor fuel assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The grid frame in the prior art is composed of inner strips and outer strips, and the inner strips are interlaced and surrounded by the outer strips. Both the inner strip and the outer strip are formed by pressure processing of metal plates, and the inner strips, the inner strip and the outer strip are connected by welding; the disadvantages are:

[0035] Both the inner strip and the outer strip are processed by pressure from metal plates; the pressure processing is prone to cracks and springback, so there are many defects, the process is complicated, and the processing efficiency is low; in addition, the protrusions on the inner strip and the outer strip Because it is formed by pressure processing, it will cause local plate thinning, which affects the local stiffness and strength of the strip.

[0036] In view of the above problems, the present invention provides a grid for PWR fuel assemblies.

[0037] Specific as figure 1 with figure 2 As shown, a grid for PWR fu...

Embodiment 2

[0045] The embodiment of the present invention is further limited on the basis of embodiment 1.

[0046] In the prior art grid, the guide fins of the outer strips are also bent inwards to reduce the risk of the adjacent components being caught during loading and unloading, but the guide fins bent inwards in the vertical direction Rigidity will be reduced, and it is easy to deform in the vertical direction when the assembly is loaded and unloaded.

[0047] Such as Figure 4 with Figure 5 As shown, in order to increase the stiffness of the guide fins 13 in the vertical direction and reduce the risk of the adjacent components being caught during loading and unloading, a reinforcement structure is provided on the inner surface of the guide fins 13, and the reinforcement structure passes through the outer strip The limit slots provided on the belt 1 are used for position limit, and the reinforcing structure is vertically distributed with the guide fins 13 .

[0048] Furthermore...

Embodiment 3

[0052] The difference between the embodiment of the present invention and embodiment 2 only lies in:

[0053] The reinforcing structure is a reinforcing plate 14 , and an opening groove 15 is opened on the reinforcing plate 14 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention particularly relates to a grillwork for a pressurized water reactor fuel assembly, and belongs to the field of pressurized water reactor fuel assemblies. The grillwork comprises outer strips and inner strips, and a plurality of inner strips are arranged inside a plurality of outer strips in a wrapping manner and are mutually staggered, wherein a plurality of bosses which are distributed in two rows at equal intervals are arranged on the surface of the inner side of the outer strips and the thickness of the plate on the outer strips at the joint of the bosses and the outer stripsis set to be thickened so that the thickness of the plate on the outer strips at the joint of the bosses and the outer strips is set to be thickened, the strength and the rigidity of the outer stripsat the bosses are improved in a basic mode of adding materials, cracks and deformation caused by excessive load can be effectively avoided and the reliability is higher; the process is simple and themachining efficiency is high.

Description

technical field [0001] The invention relates to the field of pressurized water reactor fuel assemblies, in particular to a grid for pressurized water reactor fuel assemblies. Background technique [0002] The grid frame in the prior art is composed of inner strips and outer strips, and the inner strips are interlaced and surrounded by the outer strips. Both the inner strip and the outer strip are formed by pressure processing of metal plates, and the inner strips, the inner strip and the outer strip are connected by welding; the disadvantages are: [0003] Both the inner strip and the outer strip are processed by pressure from metal plates; the pressure processing is prone to cracks and springback, so there are many defects, the process is complicated, and the processing efficiency is low; in addition, the protrusions on the inner strip and the outer strip Because it is formed by pressure processing, it will cause local plate thinning, which affects the local stiffness and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G21C3/352
CPCG21C3/352Y02E30/30
Inventor 王君陈晓明谢哲东王跃勇武海巍杨丹赵丽萍焦海坤周丽娜
Owner JILIN AGRICULTURAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com