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High-strength heat-insulation pipe shell and preparation method

A thermal insulation, high-strength technology, applied in the direction of thermal insulation protection of pipelines, thermal insulation, heat exchange equipment, etc., can solve the problem of poor crack resistance and vibration resistance, low thermal conductivity, vibration and crack resistance, and thermal insulation material strength It can not take into account the problems of thermal insulation performance, etc., to achieve the effect of low cost, improved compressive strength, hardness and temperature resistance, and light weight.

Pending Publication Date: 2021-04-06
山东佳能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a high-strength heat-insulating shell, which is light in weight, high in strength, low in thermal conductivity, and good in vibration and crack resistance, so as to solve the current There are technical problems that the strength and heat insulation performance of the heat insulation material cannot be balanced and the crack resistance and vibration resistance are poor. It is used for thermal insulation support of thermal pipelines and gravity thermal equipment in petrochemical, thermal power plants, pharmaceuticals, and heating projects.

Method used

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  • High-strength heat-insulation pipe shell and preparation method

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Effect test

Embodiment 1

[0026] The specific steps of the preparation method of the high-strength heat-insulating shell are as follows:

[0027] Put vitrified microspheres, lightweight ceramsite, microsilica fume, anti-crack fiber, and aluminate gelling agent into a mixing container in a weight percentage of 20:45:4:3:28; Add 65kg of water to the container for wet mixing; put the mixed mixture into the mold, vibrate with a vibrating rod, and smooth the outer surface; the demoulding time is 12 hours, and after 7 days of stable curing, a high-strength heat-insulating shell will be formed . The thermal conductivity of the material is determined by experiments: 0.17W / (m·K), and the compressive strength is 1.5MPa / cm 2 .

Embodiment 2

[0029] The specific steps of the preparation method of the high-strength heat-insulating shell are as follows:

[0030] Put vitrified microspheres, lightweight ceramsite, microsilica fume, anti-crack fiber, and aluminate gelling agent into a mixing container in a weight percentage of 23:44:4:3:26; Add 55kg of water into the container for wet mixing; put the mixed mixture into the mold, vibrate with a vibrating rod, and smooth the outer surface; the demoulding time is 6 hours, and after 5 days of stable curing, a high-strength heat-insulating shell will be formed . The thermal conductivity of the material is determined by experiments: 0.155W / (m·K), and the compressive strength is 1MPa / cm 2 .

[0031] It is realized by prefabrication during implementation. According to the actual geometric size and performance parameter requirements, it is made into the required shape through the mold, and it can be used after a period of stability and curing.

[0032] The typical high-streng...

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Abstract

The invention relates to an accessory matched with a pipeline, in particular to a high-strength heat insulation pipe shell and a preparation method. The high-strength heat insulation pipe shell is mainly formed by mixing vitrified micro bubbles, light ceramsite, silica fume, anti-cracking fibers and an aluminate gelling agent according to the weight percentage of 20-24: 40-45: 3-5: 3-4: 26-30 and then performing curing. The preparation method comprises the following steps: (1) uniformly mixing the vitrified micro bubbles, the light ceramsite, the silica fume, the anti-cracking fibers and the aluminate gelling agent according to a ratio in a dry manner; 2) adding water for wet mixing to obtain a mixture; (3) placing the mixture in a mold, enabling a vibrating bar to vibrate, and enabling the outer surface to be flattened; 4) performing demolding and then performing stable curing to obtain the product. The composite material has the advantages of light weight, higher strength, lower heat conductivity coefficient and better vibration resistance and crack resistance. The cost is low, the process is simple, and industrial production is easy. The heat preservation and insulation support is used for heat distribution pipelines and gravity thermal equipment of petrochemical engineering, thermal power plants, pharmacy and heating engineering.

Description

technical field [0001] The invention relates to a matching accessory for pipelines, in particular to a high-strength heat-insulating and heat-preserving pipe shell and a preparation method thereof. Background technique [0002] Currently used in long-distance high-temperature pipelines in petrochemical, electric power, metallurgy and other industries, in order to reduce heat loss during medium transmission, heat insulation measures are taken at the supporting parts of the pipeline. The heat insulation layer is a special high-strength heat insulation material . It must have high strength to support the load of the pipeline, but also have a low thermal conductivity to effectively block the leakage of heat energy. At present, the heat insulation layer of most of the heat insulation pipe brackets popular in the market is mostly made of ordinary heat-resistant castables. Although this type of heat insulation layer has high strength, it generally has problems such as poor heat in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06F16L59/02F16L59/12
CPCC04B28/06F16L59/021F16L59/12
Inventor 杨德生陈光辉
Owner 山东佳能科技股份有限公司
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