High-temperature heat insulation pipeline production technology

Abstract

The invention provides a high-temperature heat insulation pipeline production technology. The technology is characterized in that a plurality of aerogel felts are axially installed along the outer wall of a work tube before an outer protection tube is jointed to make the aerogel felts combined with a polyurethane thermal insulation layer formed through foaming in order to form a heat insulation system of a heat insulation pipeline, and the heat insulation system combines the respective excellent performances of the aerogel felts and the foamed polyurethane thermal insulation layer, can substitute traditional heat insulation materials having an unfavorable heat insulation effect, like cement perlite tiles and glass wool, has an improved temperature tolerance, and also has the characteristics of energy saving, environmental protection, safety, reliability and the like; and additionally two ends of the aerogel felts are abutted surrounding the outer wall of the work tube, abutment lines are formed between the two ends, and the abutment lines of the plurality of aerogel felts are assigned along the axial outer wall of the work tube in an interlace manner, so a defect of the heat insulation performance decrease caused by the rapid loss of heat along the abutment lines distributed along a straight line because one abutment line cracking of the aerogel felts when the abutment lines are positioned in a same straight line is avoided, thereby the pipeline heat insulation performance is guaranteed.

Description

technical field [0001] The invention relates to a production process of a high-temperature heat-insulating pipeline, and belongs to the technical field of medium-transporting heat-insulating pipelines. Background technique [0002] In the fields of central heating, central cooling, oil and gas transportation, etc., the pipelines used for medium transportation need to be insulated to ensure the insulation performance of the pipelines during medium transportation. In the prior art, the materials used as the thermal insulation layer of the thermal insulation pipeline generally include cement perlite, glass wool, polyurethane foam and the like. [0003] For example, the Chinese patent document CN201034218Y discloses a steel socket prestressed reinforced concrete heat insulating pipe, which is composed of a pipe core and a heat insulating layer, wherein the heat insulating layer is made of glass felt or cement perlite or asbestos cement or glass cloth. However, Due to the large ...

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Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the heat-insulated pipelines in the prior art cannot meet the technical requirements of high temperature resistance, water resistance and small heat loss at the same time, so as to provide a high temperature resistant and water resistant pipeline that can be applied to high temperature medium transportation. Production process of heat-insulated pipes with less heat loss

[0008] Another technical problem to be solved by the present invention is to overcome the defects that the heat-insulated pipelines in the prior art cannot meet the technical requirements of high temperature resistance, water resistance and small heat loss at the same time, so as to provide a high temperature resistant and water resistant pipeline that can be applied to high temperature medium transportation. Insulated pipes with low heat loss

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