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Electric tracing thermal insulation construction method for outdoor pipeline

A construction method and technology for external pipelines, applied in pipeline protection, pipeline heating/cooling, heat preservation, etc., can solve the problems of unsecured fire safety of buildings, freezing of outdoor pipelines, failure to meet the insulation requirements of outdoor pipelines, etc., and achieve construction The process design is reasonable, the construction steps are simple, and the effect of improving work efficiency and project quality

Inactive Publication Date: 2010-10-13
陕西建工集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the winter in the northern region, antifreezing of outdoor pipelines has always been a major problem for civil construction technicians. Due to the severe winter weather, it is easy to cause freezing of outdoor pipelines, such as the freezing of some outdoor fire-fighting pipelines, which will make the fire safety of buildings better There is no guarantee. At present, the traditional method is to wrap a layer of rubber and plastic insulation material on the outer wall of the installed pipeline to achieve the purpose of pipeline insulation and antifreeze. However, this method is only suitable for the insulation of indoor pipelines and cannot meet the insulation requirements of outdoor pipelines. Requirements, how to achieve the insulation of outdoor pipelines is an urgent problem that needs to be solved in front of civil construction technicians
Therefore, the technology of electric heat tracing and heat preservation was introduced to solve the problem of antifreeze of outdoor pipelines. However, some existing construction methods of electric heat tracing and heat preservation still have great deficiencies in some specific operation steps, which need to be further improved. improvement of

Method used

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  • Electric tracing thermal insulation construction method for outdoor pipeline
  • Electric tracing thermal insulation construction method for outdoor pipeline
  • Electric tracing thermal insulation construction method for outdoor pipeline

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The utility model relates to a construction method for electric heat tracing and thermal insulation of outdoor pipelines. The electric heat tracing electric cable used is composed of conductive plastic, two parallel busbars plus an insulating layer, a metal shielding net, and an anti-corrosion jacket. Among them, the conductive plastic made of plastic plus conductive carbon particles through special processing is the core of heat generation. When the temperature around the electric heating belt is low, the micromolecules of the conductive plastic shrink, and the carbon particles are connected to form a circuit loop, and the electric heating belt starts to generate heat; when the temperature is high, the conductive plastic produces micromolecular expansion, and the carbon particles gradually separate, causing the circuit to be interrupted , the resistance rises, the electric heating belt automatically reduces the power output, and the calorific value is reduced. When the...

Embodiment 2

[0073] The only difference between embodiment 2 and embodiment 1 is that the winding coefficient in step 2 is 2.0; in step 301 of step 3, the length of each reserved electric heating belt at both ends of the outdoor pipeline is 2.0m; step 302 in step 3 , lay the electric heating cable under the 45° side of the straight pipe in a way that is close to the straight pipe, and paste it with aluminum foil tape every 1.0m; m electric heating cable; when the electric heating cable is laid to the flange, reserve 1.2m electric heating cable. The thickness of the heat insulation layer in step 4 is 80mm.

Embodiment 3

[0075] Embodiment 3 differs from Embodiment 1 and Embodiment 2 only in that: the winding coefficient in step 2 is 1.8; in step 301, the length of each reserved electric heating belt at both ends of the outdoor pipeline is 1.8m; the step of step 3 In 302, the electric heating cable is laid under the 45° side of the straight pipe in a way that is close to the straight pipe, and is pasted and fixed with aluminum foil tape every 0.8m; 0.8m electric heating cable; when the electric heating cable is laid to the flange, reserve 1.2m electric heating cable. The thickness of the thermal insulation layer in step 4 is 70mm.

[0076] In the present invention, before electric heating construction, the spurs and sharp corners on the outer wall of the straight pipe and the pipe connector are firstly filed off, and the sharp parts are polished to make the outer wall of the straight pipe and the pipe connector smooth; the purpose of doing this is to make the straight The outer wall of the pip...

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Abstract

The invention discloses an electric tracing thermal insulation construction method for an outdoor pipeline, which comprises the following steps of: 1, polishing treatment; 2, determination of length of an electric heating tape; 3, pavement of the electric heating tape; 4, construction of a thermal insulation layer, namely after the pavement of the electric heating tape is finished, arranging the thermal insulation layer on the outer wall of the outdoor pipeline, wherein the thermal insulation layer is made of foam, rubber or plastic and the thickness of the thermal insulation layer is 60 to 80 millimeters; and 5, insulation test on the electric heating tape with a tramegger test method. The purposes of regulating the temperature of the outdoor pipeline and preventing the outdoor pipeline from being frozen are fulfilled through a temperature sensor and cooperative work of elements in a temperature control box.

Description

technical field [0001] The invention relates to a construction method of electric heat tracing and heat preservation, in particular to a construction method of electric heat tracing and heat preservation of outdoor pipelines. Background technique [0002] In the winter in the northern region, antifreezing of outdoor pipelines has always been a major problem for civil construction technicians. Due to the severe winter weather, it is easy to cause freezing of outdoor pipelines, such as the freezing of some outdoor fire-fighting pipelines, which will make the fire safety of buildings better There is no guarantee. At present, the traditional method is to wrap a layer of rubber and plastic insulation material on the outer wall of the installed pipeline to achieve the purpose of pipeline insulation and antifreeze. However, this method is only suitable for the insulation of indoor pipelines and cannot meet the insulation requirements of outdoor pipelines. Requirements, how to achie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L53/00F16L59/14F16L59/16
Inventor 张平印高彦党石会荣薛青辉
Owner 陕西建工集团有限公司
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