Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component

A technology for strengthening boiling and orifice plates, applied in cooling devices, reactors, reducing greenhouse gases, etc., can solve problems such as adverse effects on the strength and safety of pressure vessels, difficulty in controlling reliability and effectiveness, and damage to transportation and installation. Achieve the effect of reducing heat dissipation loss, improving safety, and strengthening the boiling heat transfer process

Inactive Publication Date: 2013-03-13
TSINGHUA UNIV
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the outer surface of the spherical head under the pressure vessel of a large nuclear power reactor generally adopts an ordinary smooth surface, that is, no enhanced heat transfer measures have been adopted at present. This is mainly because the pressure vessel equipment of a large nuclear power reactor is an ultra-large equipment, such as a 1000MW unit. The internal diameter of the reactor pressure vessel is 4m, and the weight of the pressure vessel is more than 400 tons. Therefore, it is very difficult to manufacture an enhan

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
  • Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component
  • Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component
  • Boiling heat-exchange reinforced wall-attached orifice plate assembly shell component

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0056] like Figure 1 to Figure 3 As shown, the enhanced boiling heat exchange assembly shell component with a wall orifice plate includes a wall orifice assembly 1 and a fixing assembly 2 . The wall-attached orifice assembly 1 is installed on the outer wall of the reactor pressure vessel 3 and is supported and fixed by the fixing assembly 2. The inner wall of the wall-attached orifice assembly 1 can be attached to the outer wall of the part of the reactor pressure vessel 3 that generates high heat flux under severe accidents. Attached; the Coanda orifice plate assembly 1 includes a plurality of Coanda orifice plate units 10 that are connected to each other as a whole. Holes 11; a plurality of wall attachment supports 12 arranged in an array are arranged on the inner side 15 of the wall attachment orifice unit so that the inner wall of the attachment orifice assembly 1 is attached to the outer wall of the reactor pressure vessel 3 when it is attached to the outer wall of the r...

no. 2 example

[0082] like Figure 25 As shown, the enhanced boiling heat exchange wall-attached orifice assembly shell member includes a wall-attached orifice assembly 1 , a fixing assembly 2 , and an outer cover plate 7 of a narrow slit flow channel. The difference from the first embodiment is that in this embodiment, the outer cover plate 7 of the narrow flow channel is arranged on the outer side of the orifice plate assembly 1, and the outer side of the orifice plate assembly 1 is connected to the inner side of the outer cover plate 7 of the narrow flow channel. A narrow slit flow channel is formed.

[0083] In order to make the structure of an enhanced boiling heat transfer shell assembled with wall-mounted orifice plate more clear, the attached Figure 25 Some components are selectively omitted in (such as fixed component 2, etc.). Therefore, the following description will mainly focus on the outer cover plate of the slit channel, and other parts that are the same as those in the fir...

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

PropertyMeasurementUnit
Plate thicknessaaaaaaaaaa
Plate thicknessaaaaaaaaaa
Equivalent diameteraaaaaaaaaa
Login to view more

Abstract

A boiling heat-exchange reinforced wall-attached orifice plate assembly shell component relates to the technical field of reinforced heat exchange. A wall-attached orifice plate assembly is mounted on an outer wall of a reactor pressure vessel and is supported and fixed by a fixing assembly, and is composed of a plurality of wall-attached orifice plate units mutually connected with each other as one. The wall-attached orifice plate units are orifice plate structure and are provided with a plurality of plate holes in an array arrangement. A plurality of wall-attached supporting members in the array arrangement are arranged at the inner side of the wall-attached orifice plate units, so that a gap is formed between part of the inner wall of the wall-attached orifice plate units except the supporting members and the outer wall of the reactor pressure vessel. The wall-attached orifice plate units are composed of orifice plates and connecting and strengthening side plates, and the connecting and strengthening side plates are arranged at edges of the orifice plates. The component can substantially reinforce boiling heat-exchange process, improve critical hot-fluid density, and thus substantially improve security; and strengthens heat exchange and improve performance stability of critical hot-fluid density.

Description

technical field [0001] The invention relates to the technical field of enhanced heat transfer, in particular to an enhanced boiling heat transfer assembly shell member with a wall-attached orifice plate, which is used for enhanced boiling heat transfer outside the spherical head of the pressure vessel of a large nuclear power reactor. Background technique [0002] Severe accidents in large nuclear power reactors may lead to core meltdown. Cooling and retaining the molten material in the reactor pressure vessel is a key measure to mitigate the accident. By filling the reactor chamber with water, submerging the hemispherical head at the bottom of the pressure vessel, and boiling the pool outside the pressure vessel, it is an important measure to mitigate severe accidents. Utilize the boiling heat transfer and passive natural circulation flow of the water outside the pressure vessel to remove the decay heat of the melt in the hemispherical head, thereby maintaining the integrit...

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): G21C15/12
CPCY02E30/40Y02E30/30
Inventor 孟继安
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap