A high-pressure gas detection joint for micro-diameter thin-walled tubes of heat exchangers

A technology of high-pressure gas and detection joints, which is applied in the field of aerospace science to achieve the effects of convenient assembly and disassembly, improved detection quality, and easy observation of detection results.

Active Publication Date: 2018-12-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no detection joint that can meet the requirements for leak-free connection of high-pressure gas sources and micro-diameter thin-walled pipes

Method used

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  • A high-pressure gas detection joint for micro-diameter thin-walled tubes of heat exchangers
  • A high-pressure gas detection joint for micro-diameter thin-walled tubes of heat exchangers
  • A high-pressure gas detection joint for micro-diameter thin-walled tubes of heat exchangers

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Embodiment Construction

[0033] See Figure 1-Figure 7 , the present invention is a high-pressure gas detection joint for micro-diameter thin-walled tubes of heat exchangers, which mainly includes a first-level joint 1, a shunt pipe 2, a plug 3, a second-level joint 4, a second-level joint nut 5, and a sealing joint 6 parts; the positional relationship between them is: the first-level joint 1, the second-level joint 4 and the plug 3 are respectively assembled and welded to the shunt pipe 2; the outer conical surface of the sealing joint 6 and the inner conical surface of the second-level joint 4 Contact installation, fixed by the thread fit of the secondary joint 4 and the secondary joint nut 5; at the same time, the micro-diameter thin-walled tube 7 is inserted into the inner hole of the sealing joint 6, and the axial extrusion force of the conical surface of the secondary joint 4 to fix.

[0034] When the high-pressure gas detection joint is working, firstly, the conical surface of the primary join...

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Abstract

The invention relates to a high-pressure gas detection joint for the micro-diameter thin-walled tubes of heat exchangers. The high-pressure gas detection joint is composed of a primary joint (1), a shunting pipe (2), a choke plug (3), secondary joints (4), secondary joint nuts (5) and sealing joints (6); the primary joint (1), the secondary joints (4) and the choke plug (3) are welded to the shunting pipe (2); the outer conical surfaces of the sealing joints (6) are installed in a manner that the outer conical surfaces of the sealing joints (6) contact with the inner conical surfaces of the corresponding secondary joints (4) and are fixed through the screwed fit of the secondary joints (4) and the secondary joint nuts (5); and micro-diameter thin-walled tubes (7) are inserted into the inner circular holes of the sealing joints (6) and are fixed by means of the axial squeezing forces of the conical surfaces of the secondary joints (4). The high-pressure gas detection joint of the invention is convenient to assemble and disassemble; the sealing property of a gas can be ensured; and no damage will be brought to the micro-diameter thin-walled tubes in installation and detection processes, and the detection quality of the micro-diameter thin-walled tubes can be improved, and detection results are easy to observe, and work efficiency can be improved.

Description

technical field [0001] The invention relates to a high-pressure gas detection joint used for micro-diameter thin-walled tubes of heat exchangers, which is suitable for connecting and sealing the micro-diameter thin-walled tubes and high-pressure gas sources for detecting the quality of the thin-walled tubes. It belongs to the field of aerospace science and technology. Background technique [0002] With the continuous improvement of aero-engine power, the aero-engine heat exchanger is an important system for cooling and heat dissipation, and its cooling effect directly affects the heat dissipation effect of the engine and its power, economy, and reliability. Therefore, more and more attention has been paid to the development of efficient aero-engine heat exchangers. The heat exchanger contains a large number of dense micro-diameter thin-walled tubes, and its quality not only directly affects the heat exchange efficiency of the heat exchanger, but also has a great impact on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/02
CPCG01M3/02G01M3/022
Inventor 程诚赵睿韩金全王震周应科万敏
Owner BEIHANG UNIV
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