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

Wind tunnel heating section shell and end face cooling structure of inner shell free end

A technology of cooling structure and heating section, which is used in the testing, measuring devices, instruments, etc. of machine/structural components, etc., can solve the problems of damage to the free end of the inner shell of the wind tunnel, and the end face cooling effect of the free end of the inner shell of the wind tunnel is difficult to meet the requirements. , to achieve the effect of improving the service life, increasing the structural strength and improving the cooling state

Active Publication Date: 2020-05-08
中国空气动力研究与发展中心超高速空气动力研究所
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide an end face cooling structure for the free end of the inner shell in the wind tunnel heating section, improve the end face cooling effect of the free end of the wind tunnel inner shell, at least solve the problem that the end face cooling effect of the free end of the existing wind tunnel inner shell is difficult to meet the requirements, and is easy The problem that the free end of the inner shell of the wind tunnel is damaged due to high temperature

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
  • Wind tunnel heating section shell and end face cooling structure of inner shell free end
  • Wind tunnel heating section shell and end face cooling structure of inner shell free end
  • Wind tunnel heating section shell and end face cooling structure of inner shell free end

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The end surface cooling structure of the free end of the inner casing of the wind tunnel heating section provided by Embodiment 1 of the present invention, see figure 1 As shown, it shows a part of the structure of the wind tunnel heating section, wherein the free end of the inner shell 2 has an annular protrusion 21 in the radial direction, and the outer surface of the annular protrusion 21 is closely fitted with the outer shell 1, so that there is no annular protrusion There is a gap between other parts of the inner shell 2 and the outer shell 1, and there is a water jacket 3 in the gap, that is, the water jacket 3 is set on the outside of the inner shell 2, and its inner surface is close to the inner shell 2. The outer surface is close to the inner surface of the outer shell 1, and there are multiple axially arranged water inlet passages 5 between the water jacket 3 and the inner shell 1, and there are multiple axially arranged water inlet channels 5 between the water...

Embodiment 2

[0050] The second embodiment is basically the same as the first embodiment, and the similarities will not be repeated. The difference is: see Image 6 As shown, the groove walls on both sides of the annular groove are inclined, and the distance between the groove walls on both sides is getting farther and farther from the groove bottom of the annular groove to the notch mouth, so that the annular groove forms a flared annular groove, that is, the groove of the annular groove The distance between the groove walls on both sides of the mouth is greater than the distance between the groove walls on both sides at the bottom of the groove.

[0051] Since the shape of the metal ring 4 matches the shape of the annular groove 4 , in this embodiment, the outer and inner surfaces of the metal ring 4 are also inclined to achieve a tight fit with the annular groove.

[0052] In a preferred embodiment, the inclination angle of the groove wall on each side of the annular groove is 1°.

[00...

Embodiment 3

[0055] The third embodiment provides a wind tunnel heating section shell, see figure 1 and figure 2 As shown, the shell of the wind tunnel heating section includes an outer shell 1, an inner shell 2 and a water jacket 3, the water jacket 3 is set outside the inner shell 2, and the outer shell 1 is set outside the water jacket 3 and the inner shell 2 , wherein the inner shell includes the end surface cooling structure of the free end of the inner shell in any one of Embodiment 1 or Embodiment 2. The shell of the heating section can effectively improve the cooling state of the end surface of the free end of the inner shell during use, and improve the service life of the inner shell

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 the technical field of hypersonic speed low-density ground test equipment, in particular to a wind tunnel heating section shell and a cooling structure of the free end of an inner shell of the wind tunnel heating section shell. According to the structure, cooling water (liquid) flows into one end of the U-shaped channel from the water inlet channel; then the water flows through the U-shaped channel and flows out from the other end of the U-shaped channel to the water outlet channel; under the condition that both the structural size and the machining process are considered, cooling water (liquid) can flow through the position closer to the end face of the free end of the inner shell, the cooling state of the end face of the free end of the inner shell can be effectively improved, and the service life of the inner shell is prolonged. The cooling structure design of the free end of the wind tunnel inner shell can effectively improve the cooling state of the end face of the free end of the inner shell and prolong the service life of the inner shell.

Description

technical field [0001] The invention relates to the technical field of hypersonic low-density ground test equipment, in particular to a cooling structure for a shell of a heating section of a wind tunnel and a free end of the inner shell. Background technique [0002] The supersonic low-density wind tunnel can simulate the test environment at a height of 60km-100km from the ground, and is used as a ground test device for studying rarefied gas dynamics. [0003] In order to meet the requirements of this kind of test, the total temperature of the front chamber (heating section) of the wind tunnel can reach up to 3000K, and the total pressure can reach up to 10MPa. For the copper material with better effect, because the inner shell needs high-pressure cooling during the test, the flow channel of the inner shell water tank needs at most high-pressure cooling water with an average flow rate of 1kg / s and a water pressure of 4MPa. The free end of the inner shell is closely combine...

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): G01M9/04
CPCG01M9/04
Inventor 毛春满杨彦广石义雷隆永胜李震乾
Owner 中国空气动力研究与发展中心超高速空气动力研究所
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com