Large-diameter long-conveying intelligent thermal insulation combined pipeline structure and construction method thereof

Abstract

The invention relates to the technical field of pipelines, in particular to a large-diameter long-conveying intelligent thermal insulation combined pipeline structure and a construction method thereof. The structure comprises single pipelines and an integral node, wherein each single pipeline comprises an outer-layer GFRP circular pipe, an inner-layer GFRP circular pipe, a self-compaction fine aggregate concrete layer and an annular heat transfer plate, and bolt holes are arranged at the two end parts of the single pipelines; the outer walls of the outer-layer GFRP circular pipes are providedwith outer-layer GFRP circular pipe reserved bolt holes and heat-conducting pipe mounting holes, steel anchor frames are mounted outside the heat-conducting pipe mounting holes, the steel anchor frames are provided with temperature control devices, the temperature control devices are connected with the annular heat transfer plate, the two single pipelines are connected through the integral node, the integral node is connected with the two single pipelines through high-strength bolts, concrete pouring holes and exhaust holes are formed in the outer wall of the integral node, and the concrete pouring holes and the exhaust holes are distributed at intervals. The large-diameter long-conveying intelligent thermal insulation combined pipeline structure and the construction method thereof solve the problems of small diameter, poor stability, poor permeability resistance and poor heat preservation performance of a conveying medium in a high-severe cold area in a traditional pipeline.

Description

Technical field: [0001] The invention relates to the technical field of pipelines, in particular to a large-diameter long-distance intelligent heat preservation composite pipeline structure and a construction method thereof. Background technique: [0002] Conventional long-distance pipelines are mostly round steel pipes and reinforced concrete round pipes, with diameters ranging from 0.5 meters to 1.5 meters. One end adopts the form of an enlarged head, and the connection between the pipes is realized through the head. The liquid is transported in the steel pipe all the year round, and it is easy to rust. Long-term erosion will reduce the effective thickness of the pipe wall, reduce the rigidity of the pipe wall, and local buckling will easily occur under the pressure of the soil and the outside world. At the same time, due to the erosion of the inner wall by the liquid in the pipeline, there are more and more impurities. It is difficult to meet the quality inspection standa...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and to provide a large-diameter long-distance intelligent thermal insulation combined pipeline structure and its construction method, which is used to solve the problems of small diameter, stability, impermeability, etc. of traditional pipelines. In order to solve the problem of poor thermal insulation performance of transmission medium in high and severe cold areas, it also provides a construction method for this large-diameter long-distance intelligent thermal insulation combined pipeline structure system

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