Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Ultrasonic nozzle for use in metallurgical installations and method for dimensioning an ultrasonic nozzle

A technology for supersonic nozzles and metallurgical equipment, applied in lighting and heating equipment, special data processing applications, computer-aided design, etc., can solve problems such as the need to replace gun heads, achieve good internal flow characteristics, simplify installation or operation, and save copper material effect

Active Publication Date: 2013-04-24
SMS DEMAG AG
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After this time, the nozzle edge wears down so much that there is a risk of water breakdown of the water-cooled supersonic nozzle and the nozzle tip has to be replaced

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
  • Ultrasonic nozzle for use in metallurgical installations and method for dimensioning an ultrasonic nozzle
  • Ultrasonic nozzle for use in metallurgical installations and method for dimensioning an ultrasonic nozzle
  • Ultrasonic nozzle for use in metallurgical installations and method for dimensioning an ultrasonic nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Different embodiments of the disclosure are described below, wherein the same reference symbols are used for identical or similar components and a repeated description is partially omitted.

[0030] Figure 1 shows the schematic Mach number distribution inside and outside of a Laval supersonic nozzle (which operates with oxygen). Oxygen enters the atmosphere here at 1650°C.

[0031] It is evident here that in the design state shown in Figure 1a, ie when the pressure p at the outlet cross-section e equal to the ambient pressure p u , allowing essentially undisturbed flow.

[0032] The underexpansion (Unterexpansion) is shown in Figure 1b, where the ambient pressure p u is less than the pressure p at the outlet cross-section e . Disturbing jet streams are clearly recognizable here.

[0033] In Fig. 1c is shown the overexpansion (Ueberexpansion), ie in which the ambient pressure p u greater than the outlet cross-section p e place pressure. There is also a disturbin...

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 relates to an ultrasonic nozzle for use in metallurgical installations, in particular for the top blowing of oxygen in a Basic Oxygen Furnace (BOF) or an electric arc furnace (EAF), comprising a convergent portion and a divergent portion, which are adjacent to each other at a nozzle throat (DK), wherein the ultrasonic nozzle is defined by the following group of nozzle forms in the respective design case thereof: (T1)

Description

Technical field [0001] The present invention involves a method of UEBERSCHALLLLESE applications applied in metallurgical devices and a method to determine such supersonic nozzles. Background technique [0002] The supersonic nozzle or Laval supersonic nozzle finds a wide range of use in the field of metallurgy applications.For example, in the BOF turning furnace (oxygen bleeding furnace) when making steel, the Aufblasen is blown into a metal pool with the help of the Blaslanze. [0003] In the field of arc furnace (EAF), the supersonic nozzle is applied to a sprayer used in oxygen or in a burner for melting waste. [0004] For example, a supersonic nozzle that is known in the file WO 00 / 28096 A1 is known to spray the device of oxygen or other engineering gas. It can be applied to metallurgical process and especially when melting metal.Here is a mathematical method for designing the wall contours of the convergence of the LAVAL supersonic nozzle and the diffusion nozzle. Among the...

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): C21C5/46F27B3/22F27D3/16
CPCF27D2003/164F27D2003/169F27D3/16C21C5/4606G06F17/5009F27B3/225C21C5/5217G06F30/17Y02P10/20C21C5/46F27B3/22G06F30/00G06F30/20G06F30/28G06F2113/08
Inventor H-J.奥登塔尔J.施吕特H.奥利维尔I.克利奥切尼科夫
Owner SMS DEMAG AG
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
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