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

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...

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

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