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Composite structure heat insulation pipe and using method thereof

A composite structure and heat-insulated pipe technology, applied in the direction of protecting pipes, pipes, rigid pipes, etc. through heat insulation, can solve problems such as defects, aggravated greenhouse effect, and ozone layer destruction

Active Publication Date: 2021-05-25
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane composite insulation pipes also have shortcomings that have not been overcome: for example, in addition to material defects that are easily caused by process problems, the foaming agent of polyurethane still cannot meet the requirements of environmental protection
The second-generation blowing agent currently used belongs to hydrochlorofluorocarbons, so it will cause damage to the ozone layer and aggravate the greenhouse effect
The development of new blowing agents needs to consider other factors such as cost, safety, performance, etc., so this problem still needs to be solved

Method used

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  • Composite structure heat insulation pipe and using method thereof

Examples

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Effect test

Embodiment 1

[0062] The invention provides a heat insulating pipe with a composite structure. The heat insulating pipe with a composite structure is as follows: figure 1 As shown, it includes an inner tube 1 and an outer tube 10 coaxially nested from the inside to the outside. The annular accommodation cavity formed between the inner tube 1 and the outer tube 10 is a vacuum environment, and the inner tube surrounds the outer circumference of the inner tube 1 in the accommodation cavity. A tubular structure shielding layer 8 is arranged along its axial direction. Both the inner annular cavity 9 formed between the inner tube 1 and the shielding layer 8 and the outer annular cavity 7 formed between the shielding layer 8 and the outer tube 10 are filled with thermal insulation materials.

[0063] Both ends of the outer tube 10 are provided with a cover assembly, the cover assembly includes an outer kerat 4, an inner kerat 2 and a ceramic ring 11, the outer kerat 4 is sleeved on the outer perip...

Embodiment 2

[0068] The invention provides a heat insulating pipe with a composite structure. The heat insulating pipe with a composite structure is as follows: figure 1 As shown, it includes an inner tube 1 and an outer tube 10 coaxially nested from the inside to the outside. The annular accommodation cavity formed between the inner tube 1 and the outer tube 10 is a vacuum environment, and the inner tube surrounds the outer circumference of the inner tube 1 in the accommodation cavity. A tubular structure shielding layer 8 is arranged along its axial direction. Both the inner annular cavity 9 formed between the inner tube 1 and the shielding layer 8 and the outer annular cavity 7 formed between the shielding layer 8 and the outer tube 10 are filled with thermal insulation materials.

[0069] Both ends of the outer tube 10 are provided with a cover assembly, the cover assembly includes an outer kerat 4, an inner kerat 2 and a ceramic ring 11, the outer kerat 4 is sleeved on the outer perip...

Embodiment 3

[0074] The invention provides a heat insulating pipe with a composite structure. The heat insulating pipe with a composite structure is as follows: figure 1 As shown, it includes an inner tube 1 and an outer tube 10 coaxially nested from the inside to the outside. The annular accommodation cavity formed between the inner tube 1 and the outer tube 10 is a vacuum environment, and the inner tube surrounds the outer circumference of the inner tube 1 in the accommodation cavity. A tubular structure shielding layer 8 is arranged along its axial direction. Both the inner annular cavity 9 formed between the inner tube 1 and the shielding layer 8 and the outer annular cavity 7 formed between the shielding layer 8 and the outer tube 10 are filled with thermal insulation materials.

[0075] Both ends of the outer tube 10 are provided with a cover assembly, the cover assembly includes an outer kerat 4, an inner kerat 2 and a ceramic ring 11, the outer kerat 4 is sleeved on the outer perip...

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Abstract

The invention provides a composite structure heat insulation pipe and a using method thereof. The composite structure heat insulation pipe comprises an inner pipe and an outer pipe which are coaxially sleeved from inside to outside, wherein the interior of an annular containing cavity formed between the inner pipe and the outer pipe is a vacuum environment, a tubular structure shielding layer is arranged in the containing cavity around the periphery of the inner pipe in the axial direction of the inner pipe, and an inner side annular cavity formed between the inner pipe and the shielding layer and an outer side annular cavity formed between the shielding layer and the outer pipe each are filled with a heat preservation material. All conventional heat transfer paths are systematically analyzed, blocking structures are designed one by one according to different transfer modes, and all heat transfer processes are systematically and fully considered.

Description

technical field [0001] The invention belongs to the technical field of heat-insulating pipes, and relates to a heat-insulating pipe with a composite structure and a use method thereof, in particular to a vacuum heat-insulation pipe with a composite structure and a use method thereof. Background technique [0002] With the continuous expansion of industrial scale, the human demand for energy such as oil and electricity is increasing, which also puts forward higher and higher requirements for the insulation effect of pipeline transportation. Therefore, the thermal insulation pipe has also developed with the continuous improvement of thermal insulation materials and thermal insulation structures. In the 1930s, the former Soviet Union used coal slime to insulate pipes, and in the 1940s it switched to pouring foam concrete. The insulation methods used are called filling type and pouring type, which were used in early direct buried pipelines. However, due to the relatively high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02F16L59/04F16L59/065F16L59/08F16L9/18
CPCF16L59/028F16L59/029F16L59/04F16L59/065F16L59/08F16L9/18
Inventor 项晓东林湖韩明昊权泰
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA