Heat exchange two-layer pipe sealing structure and installing fixture and method thereof

Abstract

The invention discloses a heat exchange two-layer pipe sealing structure. The heat exchange two-layer pipe sealing structure comprises an outer pipe, an inner pipe arranged in the outer pipe and a sealing component; the sealing component is installed on the inner pipe in a sleeving mode and comprises an external bevel; and the end of the outer pipe is provided with an internal bevel, and the external bevel and the internal bevel closely abut against each other. The invention further discloses an installing fixture. The installing fixture comprises an installing barrel, the inner side wall of the installing barrel is in threaded fit with the outer side wall of the connecting barrel, and an opening of the end of the installing barrel is provided with a stop body used for stopping the connecting barrel. The invention further discloses an installing method. The installing barrel is twisted to be installed on the connecting barrel through a thread in a sleeving mode, axial motion of the connecting barrel is stopped through the stop body, thus, the connecting barrel rotates along with the installing barrel, the installing barrel continues being twisted to be installed at the end of the outer pipe through a thread in a sleeving mode, the sealing component is pressed through a pressing body, the external bevel is made to be tightly attached to the internal bevel, the connecting barrelis welded to or adheres to the end of the outer pipe through welding or bonding equipment, and the installing barrel is reversely twisted to be separated from the connecting barrel. The heat exchangetwo-layer pipe sealing structure is better and more durable in sealing.

Description

technical field [0001] The invention relates to the field of pipe sealing connection, in particular to a heat exchange double-layer pipe sealing structure, an installation fixture and an installation method thereof. Background technique [0002] The heat exchange double-layer tube includes an outer tube and an inner tube arranged inside the outer tube. Inside the inner tube is a first medium channel, and between the outer wall of the inner tube and the inner wall of the outer tube is a second medium channel. When the first and second medium channels are respectively When media with different temperatures are circulated, heat exchange will take place between the two media. This kind of heat exchange double-layer tube is widely used in various civil and industrial heat exchange equipment such as water dispensers and evaporative concentrators. It is used for The core component of heat exchange. [0003] At the end of the heat exchange double-layer tube, it is necessary to seal...

AI Technical Summary

Problems solved by technology

In this sealing method, the contact surface between the sealing ring, the outer tube and the steps is sharp, resulting in stress concentration, which has a great impact on the fatigue life of the sealing ring and needs to be replaced frequently

[0004] Moreover, the existing sealing structure is bulky, and the nut is exposed after installation, which is unsightly. Once the seal is not tight due to wrong screwing, it will cause cross-contamination of the two media

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