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A Compensatorless Vacuum Tube for Cryogenic Fluid Transport

A low-temperature fluid, non-compensation technology, used in pipeline expansion compensation devices, thermal insulation, pipe components, etc., can solve problems such as large heat loss, poor pipeline reliability, and many welds, and achieve the effect of small heat loss.

Inactive Publication Date: 2016-09-28
BEIJING INST OF AEROSPACE TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the vacuum heat insulation pipes in the prior art, the corrugated compensation pipes generally used have a large heat loss, and there are many welds, and the reliability of the pipeline is poor. Therefore, the applicant proposes a new vacuum heat insulation pipe

Method used

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  • A Compensatorless Vacuum Tube for Cryogenic Fluid Transport
  • A Compensatorless Vacuum Tube for Cryogenic Fluid Transport

Examples

Experimental program
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Embodiment 1

[0034]A compensator-free vacuum tube for cryogenic fluid transportation, comprising an inner tube 2, an outer tube 3, an insulation layer 7 outside the inner tube 2, a vacuum cavity is formed between the inner tube and the outer tube, and the inner tube 2 and the outer tube 3 Pipe support 4 is evenly arranged between the inner walls along the axis of the outer pipe, and retaining rings 5 ​​are arranged on both sides of the pipe support; vacuum evacuation nozzles are installed on the outer pipe wall; The inner tube or the central part of the inner tube between the pipeline supports 4 is arc-shaped, and the arc direction of the inner tube between adjacent pipeline supports is opposite; the central angle of the arc-shaped inner tube is 7°; the inner diameter of the inner tube is 27mm, wall thickness is 2.5mm, and length is 4022mm; the inner diameter of the outer tube is 86mm, wall thickness is 3mm, and length is 3268; the distance between the two pipeline supports is 400cm; the he...

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Abstract

The invention relates to a vacuum low-temperature heat-insulation pipe for low-temperature fluid transportation, in particular to a vacuum low-temperature heat-insulation pipe without a compensator for low-temperature fluid transportation. The vacuum cryogenic insulation pipe of the present invention includes an inner pipe 2 for conveying low-temperature medium, and an outer pipe 3 sleeved outside the inner pipe, wherein the inner pipe 2 is wrapped with heat insulating material and a vacuum is formed between the inner pipe and the outer pipe, and the outer pipe 2 is Between the inner wall of the outer tube 3 and the inner wall of the outer tube, there is a pipeline support 4 evenly arranged along the axis of the outer tube. The tube arcs are in the opposite direction. Through the ingenious design of the inner tube and the outer tube, the present invention enables the vacuum tube without compensator of the present invention to have small heat loss, safety, stability and high efficiency when transporting cryogenic liquid.

Description

technical field [0001] The invention relates to a vacuum tube for cryogenic fluid delivery, in particular to a compensator-free vacuum tube for cryogenic fluid delivery. Background technique [0002] Vacuum cryogenic insulation tubes are mainly used to transport cryogenic liquids, such as liquid oxygen, liquid nitrogen, liquid hydrogen, liquefied natural gas, etc. It is mainly composed of an inner tube and an outer tube. In the prior art, the inner tube is generally a smooth straight tube, and the inner and outer tubes are supported and connected to each other by setting a support device. The support device is generally an annular plate, which is sleeved on the outside of the inner tube. , top on the inner wall of the outer tube; heat insulation sleeves are installed at both ends of the heat insulation tube, and the heat insulation sleeve is set between the inner and outer tubes. For heat transfer; bellows or U-shaped expansion joints are arranged on the inner pipe to reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/135F16L51/00
Inventor 郁焕礼于兰应媛媛杨庆瑞宋健陈建军陈斌武
Owner BEIJING INST OF AEROSPACE TESTING TECH