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

A plate-shaped flow distribution device for the lower chamber of a nuclear reactor

A technology for a flow distribution device and a nuclear reactor, which is applied to the field of plate-shaped flow distribution devices in a lower chamber of a reactor, can solve the problems of difficulty in installation and maintenance, influence on structural stability, complex structure and flow field, etc. Effects of thermal hydraulic requirements

Active Publication Date: 2016-08-10
NUCLEAR POWER INSTITUTE OF CHINA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the third-generation pressurized water reactor core measurement is drawn from the upper head of the pressure vessel, but the structure and flow field of the lower chamber of the reactor are relatively complicated, and the flow-induced vibration affects the stability of the structure. At the same time, due to the complexity of the structure of the lower chamber , it is difficult to install and maintain

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
  • A plate-shaped flow distribution device for the lower chamber of a nuclear reactor
  • A plate-shaped flow distribution device for the lower chamber of a nuclear reactor
  • A plate-shaped flow distribution device for the lower chamber of a nuclear reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] The nuclear power plant reactor includes a pressure vessel 6, a hanging basket assembly 9 is arranged inside the pressure vessel, and the lower end of the hanging basket assembly 9 is provided with a lower core support plate 4, and the lower core support plate 4 is supported on the radial support of the core. On the member 5, a descending cavity 7 is formed between the hanging basket assembly 9 and the inner wall of the pressure vessel 6; the lower chamber 8 is the area in the lower head of the pressure vessel 6 which is at the lower part of the core support plate 4; When the reactor is running, the coolant enters the pressure vessel 6 through the cold pipe section, and flows into the lower chamber 8 through the descending chamber 7; the coolant is mixed in the lower chamber 8 and then passes upward through the lower core support plate 4 to enter ...

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 present invention relates to a nuclear reactor lower chamber plate-like flow distribution apparatus, which is arranged in the lower chamber inside the lower dome of a reactor pressure container, and comprises a flow distribution plate and a plurality of supporting columns, wherein the flow distribution plate is a circular plate and is fixed on the lower surface of the reactor core lower supporting plate in the pressure container through the supporting columns, the flow distribution plate and the reactor core lower supporting plate in the pressure container share the same axis line, and the flow distribution plate is uniformly provided with a plurality of penetrating water flowing holes. According to the present invention, the reactor lower chamber structure is substantially simplified, and the stability and the reliability of the structure are improved; the phenomenon of the uneven flow field on the reactor core inlet region is overcome, and the thermal-hydraulic requirements are met; and the nuclear reactor lower chamber plate-like flow distribution apparatus has characteristics of simple structure, cost reducing and economy improving.

Description

technical field [0001] The invention relates to the field of pressurized water reactor nuclear power plants, in particular to a plate-shaped flow distribution device for a reactor lower chamber of a pressurized water reactor nuclear power plant. Background technique [0002] In order to meet the thermal and hydraulic requirements of the reactor and improve the overall performance of the reactor, the coolant entering the core must be evenly distributed. When the uniformity requirements are not met, a flow distribution device is often required. The space in the lower chamber of the reactor is limited, and the installation and maintenance of components are difficult. Therefore, on the premise of satisfying the flow distribution, the structure should be simplified as much as possible to improve stability and reliability. For the second-generation and improved pressurized water reactors of nuclear power currently in operation at home and abroad, the core measurements are all draw...

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): G21C15/14G21C5/10
CPCY02E30/30
Inventor 张宏亮卢川方才顺李燕赵伟刘晓范恒周禹李宁李浩
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