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

Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect

A nuclear fuel assembly and function technology, applied in the direction of reactor fuel elements, moderator/core structure, nuclear engineering, etc., can solve the weakening of structural lattice mixing performance, flow turbulence, and coordination between the clamping system and the mixing system without consideration To achieve the effect of achieving coordination, increasing critical heat flux density, and reducing pressure loss

Active Publication Date: 2013-04-03
NUCLEAR POWER INSTITUTE OF CHINA
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this design did not consider the coordination of the clamping system and the mixing system. The interference of the clamping system (three-bend spring and bridge-shaped rigid convex) on the flow field leads to flow turbulence, especially the impact of the upper rigid convex on the downstream mixing system. Severe interference caused by the mixing effect, resulting in the weakening of the mixing performance of the structural lattice

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
  • Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect
  • Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect
  • Nuclear fuel assembly based structural grillwork with flow hybrid coordinating effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Such as figure 1 , figure 2 , image 3 As shown, based on the structural lattice with flow and mixing coordination in nuclear fuel assemblies, it includes a lattice composed of several strips 3 interwoven vertically with each other, and a pair of mixing strips are arranged on both sides of the top of the intersection of the strips 3 Each strip 3 of the wings 5 ​​is recessed to form a half-button-shaped rigid-convex structure-2, and the opening end of the rigid-convex structure-2 faces the bending direction of the corresponding mixing wing 5. According to the bending direction of the mixing wings 5 ​​at the top of the grid strip 3, a half-button structure is stamped on the just convex position on the strip 3, and the half-button shape opens upwards towards the bending direction of the mixing wings, and is formed at the crossing position of the strip 3. Stirring wings with cross orientation.

[0021] The strip provided with the rigid convex structure 1 2 is indented t...

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 discloses a nuclear fuel assembly based structural grillwork with a flow hybrid coordinating effect. The structural grillwork comprises a grillwork formed by mutually perpendicularly interweaving a plurality of stripes, a pair of mixing wings are respectively arranged on the two sides of the top of the intersection position of the stripes, and each stripe is recessed to form a half-buckled-shaped rigid protruding structure. With the adoption of the half-buckled-shaped rigid protruding structure, the coordination between a clamping system and a mixing system is achieved, the hybrid performance of the structural grillwork is enhanced, thereby improving the critical heat flux density of a nuclear fuel assembly; and with the oblique channel type paired half-buckled-shaped rigid protruding structure, the internal flow of the structural grillwork is effectively rectified, so that the pressure loss is reduced to some extent.

Description

technical field [0001] The invention relates to a structure grid based on the flow and mixing coordination function in the nuclear fuel assembly, which belongs to the design of the fuel assembly structure grid of the pressurized water reactor nuclear power plant. Background technique [0002] The fuel assembly commonly used in the existing pressurized water reactor nuclear power plant is composed of a number of fuel rods, guide pipes, positioning grids, upper and lower nozzle sockets and the like. The positioning grid is an important part of the framework, and its main function is to clamp the fuel rods to make them positioned, and the second is to stir the fluid to increase the critical heat flux density of the fuel assembly. A typical structural grid design adds a mixing system on the basis of the clamping system, so as to realize the superposition of the above two functions of the positioning grid. [0003] Through the retrieval of special topics and patent documents, it...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/352G21C5/06G21C15/243
CPCG21C3/322G21C3/3432G21C3/352Y02E30/30
Inventor 雷涛陈杰彭园程华旸张世权张虹卢庆肖忠张林雍泾
Owner NUCLEAR POWER INSTITUTE OF CHINA
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