Prefabricated cryogenic heat-preservation pipeline

A heat preservation pipe and cryogenic technology, applied in the direction of heat preservation, pipe protection through heat insulation, pipe protection, etc., can solve the problems of heat preservation of conveying pipes, and achieve the effect of convenient manufacture and simple structure

Inactive Publication Date: 2016-10-12
TIANJIN PIPELINE ENG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to solve the insulation problem of cryogenic medium transportation pipelines, provide a h

Method used

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  • Prefabricated cryogenic heat-preservation pipeline
  • Prefabricated cryogenic heat-preservation pipeline

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[0021] It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be und...

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Abstract

Provided is a prefabricated cryogenic heat-preservation pipeline. The pipeline is composed of a working steel pipe, an anticorrosive layer, a heat-preservation layer, a waterproof and moisture-proof layer, an outer protective layer and an alarm detecting line, wherein the waterproof and moisture-proof layer is provided with a bonding surface. The pipeline anticorrosive layer, the heat-preservation layer and the waterproof and moisture-proof layer provided with the bonding surface are sequentially sprayed onto the steel pipe progressing spirally through a spraying device. The alarm detecting line is pre-buried in the heat-preservation layer. Molten polyethylene bands are adopted for the outer protective layer to be spirally wound on the bonding surface of the waterproof and moisture-proof layer to form a firm integrated structure. The thicknesses of all the layers can be randomly adjusted according to design requirements; the production process is simple; and the density of materials for each layer is even in distribution. The prefabricated spray-coating-wound cryogenic heat-preservation pipeline can resist the temperature of minus 196 DEG C or above and can transport cryogenic matter such as liquid nitrogen, liquefied natural gas, liquid oxygen and liquefied petroleum gas over a long distance. The prefabricated cryogenic heat-preservation pipeline is simple in structure, convenient to manufacture and capable of shortening the site construction period, reducing material wastage and lowering medium transportation cost.

Description

Technical field [0001] The invention belongs to the field of cryogenic medium transportation and other medium auxiliary equipment, and in particular relates to a prefabricated cryogenic insulation pipeline. Background technique [0002] With the advancement of technology and the improvement of human living standards, the application scope of cryogenic liquefied substances such as liquefied natural gas (LNG), liquid nitrogen (LN2), liquid oxygen (LO2), liquid carbon dioxide (LCO2), and liquefied petroleum gas (LPG) is gradually Expansion, especially LNG, is mainly composed of methane. LNG is condensed into liquid by cooling gaseous natural gas at normal pressure to -162°C. The liquefaction of natural gas can greatly save storage and transportation space. The volume after liquefaction is about 1 / 600 of the gas volume, and it has the characteristics of large heating value and high performance. LNG is a clean and efficient energy source. It is becoming more and more popular as a cl...

Claims

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Application Information

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IPC IPC(8): F16L9/14F16L59/02F16L58/02F16L57/00
CPCF16L9/14F16L57/00F16L58/02F16L59/029
Inventor 周曰从李宪实
Owner TIANJIN PIPELINE ENG GROUP
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