Vacuum heat insulation pipeline plug-in type connector and connecting method thereof

Abstract

The invention discloses a vacuum heat insulation pipeline plug-in type connector and a connecting method thereof. The vacuum heat insulation pipeline plug-in type connector comprises a female plug and a male plug, wherein the female plug comprises an outer pipe and an inner pipe; a heat insulation material is wound on the interlayer of the outer pipe and the inner pipe; the male plug comprises a first outer pipe, a second outer pipe and an inner pipe; the heat insulation material is wound on the interlayer of the first outer pipe and the inner pipe; the interlayer of the outer pipe and the inner pipe of the female plug is communicated with the interlayer of connected pipe sections, and vacuumized; the interlayer of the first outer pipe and the inner pipe of the male plug is communicated with the interlayer of the connected pipe sections, and vacuumized; the second outer pipe of the male plug is plugged into the inner pipe of the female plug; and pipe section sealing sections of the female plug and the male plug are matched with each other by using materials with different heat expansion and cold contraction coefficients. In the mode, the vacuum heat insulation pipeline plug-in type connector is high in sealing performance and heat insulation performance under cryogenic working conditions; the simple and convenient plug-in type connection of vacuum heat insulation pipe sections is effectively realized; and the vacuum heat insulation pipeline plug-in type connector is great in economic benefit and using value.

Description

technical field [0001] The invention relates to the field of cryogenic liquid transportation, in particular to a vacuum insulated pipeline plug-in coupler with an automatic sealing function in a cryogenic state and a connecting method thereof. Background technique [0002] This patent is mainly applied to the connection between vacuum insulation pipe sections for conveying cryogenic liquid (generally lower than -100°C), and the pipeline system for transporting cryogenic medium is formed by connecting cryogenic insulated pipe sections. [0003] Due to the particularity of conveying cryogenic medium, very high requirements are put forward for the coupling of the conveying pipe section: it is necessary to ensure the sealing performance of the joint joint, that is, the conveying medium cannot leak when passing through the coupler; it must also maintain good thermal insulation performance. In addition, considering the application environment of the pipeline system, which involves...

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is to provide a vacuum insulated pipeline plug-in coupler and its connecting method, which can achieve good sealing and solve the problems of serious liquid and heat leakage and difficult disassembly of the vacuum insulated pipeline coupler , with good economic benefits and use value

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