Special bracket for pipe rack elevated polyurethane insulation pipe and construction method thereof

Abstract

The invention discloses a special bracket for a pipe rack elevated polyurethane insulation pipe. The bracket comprises an inner bracket and an outer bracket; the inner bracket is connected with a working steel pipe of a polyurethane insulation pipe; the outer bracket is connected with an outer bracket support plate through an outer bracket stand column; and the inner bracket and the outer bracketare connected through inner and outer bracket fixed bolts to form an insulation layer. A construction method of the bracket comprises the following steps: (S1) the inner bracket is welded on the working steel pipe, and the marking protection is performed on a bolt hole in a longitudinal reinforcing rib to obtain a precast piece; (S2) the polyurethane foaming is performed to obtain the polyurethaneinsulation pipe; and (S3) the outer bracket is fixed on an infrastructure of a laid pipe through an outer bracket support plate; a protecting mark on the polyurethane insulation pipe obtained in thestep (S2) is taken out; bolt holes on the two sides of the inner bracket and the outer bracket are aligned; and bolts are used for fixation. The invention further provides the polyurethane insulationpipe containing the special bracket. The construction is simple without damaging the insulation layer; and the special bracket is low in cost, excellent in insulation effect and long in service life.

Description

technical field

[0001] The invention relates to the technical field of polyurethane thermal insulation pipes, in particular to a special bracket for overhead polyurethane thermal insulation pipes in a pipe gallery and a construction method thereof. Background technique

[0002] Polyurethane insulation pipe is composed of internal medium pipe (working steel pipe), middle rigid polyurethane foam layer (insulation layer) and outer protective layer (outer protection pipe), because of its low engineering cost, less heat loss, good anti-corrosion insulation performance and With the advantages of convenient construction, it is widely used in chemical pipelines, central heating, central air-conditioning ventilation pipelines, municipal engineering and other fields.

[0003] However, in the laying process of the existing polyurethane thermal insulation pipe, in order to reliably fix the working steel pipe, it is necessary to open the outer protective pipe of the pipeline and the bott...

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