Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-foreign matter grille, lower tube seat assembly and fuel assembly

A technology for fuel assembly and foreign object prevention, which is applied in the directions of reactor fuel elements, fuel element assembly, greenhouse gas reduction, etc. The effect of reducing pressure drop and improving hydraulic performance

Active Publication Date: 2021-11-09
GUANGDONG NUCLEAR POWER JOINT VENTURE +3
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this anti-foreign body structure will reduce the liquid flow area of ​​the lower pipe seat, and at the same time form a large pressure drop, reducing the hydraulic performance of the pipe seat

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
  • Anti-foreign matter grille, lower tube seat assembly and fuel assembly
  • Anti-foreign matter grille, lower tube seat assembly and fuel assembly
  • Anti-foreign matter grille, lower tube seat assembly and fuel assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] Such as figure 1 , 2 As shown, the anti-foreign matter grid 1 of an embodiment of the present invention is used on the lower pipe socket in the fuel assembly. The first cell sheet 10 and several second cell sheets 20 and several subdivided blades 40 are arranged in parallel and spaced apart.

[0031] The shape of the frame body 30 is set corresponding to the outer circumference of the lower pipe seat, and can be in the shape of a square, a rectangle, a regular pentagon or a regular hexagon. The first cell sheet 10 and the second cell sheet 20 are arranged alternately, and several cells 50 are separated in the frame body 30 . Both ends of the first cell sheet 10 and the second cell sheet 20 can be fixedly conne...

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 an anti-foreign matter grid, a lower pipe seat assembly and a fuel assembly. The anti-foreign matter grid includes a frame body, several first grid element pieces arranged in parallel and spaced in the frame, and several parallel and spaced The second cell sheet and several subdivided blades; the first cell sheet and the second cell sheet are arranged in a staggered manner, and several cells are separated in the frame; the subdivided blades are set At the intersection of the first cell sheet and the second cell sheet and surrounded between the first cell sheet and the second cell sheet. The anti-foreign matter grid of the present invention is formed by the staggered arrangement of grid elements and the cooperation of subdivided blades, etc., which can divide the fluid flowing down the pipe seat, so as to ensure the flow of fluid and at the same time play the role of preventing foreign matter. At the same time, the thickness of the cell sheet is small, and the resistance to the fluid is low, which will greatly reduce the pressure drop of the anti-foreign matter plate and improve the hydraulic performance of the lower pipe seat assembly.

Description

technical field [0001] The invention relates to the technical field of nuclear fuel assemblies, in particular to an anti-foreign matter grid, a lower pipe seat assembly and a fuel assembly. Background technique [0002] In the current anti-foreign matter design of the lower pipe seat, there are usually two ways to prevent foreign matter: one is to assemble the anti-foreign matter plate, the plate is attached to the upper and lower surfaces of the pipe seat, and there are small flow holes corresponding to the position of the water hole of the pipe seat ; One is that the connecting plate of the lower pipe seat is designed with a special-shaped rib plate, which is designed as a blade structure with curved surface protrusions, and the connecting plate of the pipe seat is formed by a combination of horizontal and vertical crossings. [0003] Disclosed in CN203070777U is a lower pipe base partition consisting of two layers of plates. The two layers of plates are provided with flow...

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 Patents(China)
IPC IPC(8): G21C3/34G21C3/356
CPCG21C3/3424G21C3/356Y02E30/30
Inventor 汤阳阳庞铮铮李伟才禹文池陈威
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE