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Structural system and construction method of oil and gas multiphase flow multi-cavity thermal insulation combined pipeline

A multiphase flow and pipeline technology, applied in the field of pipelines, can solve the problems of poor thermal insulation performance of transportation medium, single transportation mode, low transportation efficiency, etc., and achieve the effects of high tensile strength, good long-term airtightness, and improved transportation efficiency.

Inactive Publication Date: 2021-01-29
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 provide an oil-gas multi-phase flow multi-cavity thermal insulation composite pipeline structure system and construction method, which is used to solve the problem of small diameter, stability, impermeability, etc. of traditional pipelines. In order to solve the problems of poor performance, low transportation efficiency, single transportation mode and poor thermal insulation performance of transportation medium in cold regions, a construction method for this oil-gas multiphase flow multi-cavity thermal insulation combined pipeline structure system is provided

Method used

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  • Structural system and construction method of oil and gas multiphase flow multi-cavity thermal insulation combined pipeline
  • Structural system and construction method of oil and gas multiphase flow multi-cavity thermal insulation combined pipeline
  • Structural system and construction method of oil and gas multiphase flow multi-cavity thermal insulation combined pipeline

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Embodiment 1

[0061] refer to figure 1 , this oil-gas multiphase flow multi-cavity thermal insulation composite pipeline structure system is composed of three pipelines connected by GFRP anti-buckling energy dissipation dampers. Integral node connection composition, combining Figure 4 , Figure 5 As shown, the straight pipe unit is formed by two seamless inner and outer layers of wound GFRP round pipes, insulation boards and interlayer self-compacting fine stone concrete, as shown in Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, the inner side of the outer GFRP round tube is provided with GFRP shear connection keys according to a certain rule, and the outer side of the inner GFRP round tube is set with GFRP high-strength bolts according to a certain rule, and the bolt holes are pre-arranged on the insulation board. The plate and the inner GFRP round pipe are fixed, and the straight pipes are connected by integral nodes on site, such as Figure 6 , Figure 7 As shown, the...

Embodiment 2

[0067] refer to figure 2 , this oil-gas multiphase flow multi-cavity thermal insulation composite pipeline structure system is composed of three pipelines connected by GFRP buckling-resistant energy dissipation dampers, and the three pipelines are arranged on the three vertices of an equilateral triangle. Among them, a single pipeline is composed of straight pipeline monomers and curved pipeline monomers connected by integral nodes. Figure 12 As shown, the curved pipe unit is formed by two seamless inner and outer layers of wound GFRP round pipes, insulation boards and interlayer self-compacting fine stone concrete, as shown in Figure 9 , Figure 11 As shown, the inner side of the outer GFRP round pipe is provided with GFRP shear connection keys according to a certain rule, and the outer side of the inner GFRP round pipe is arranged with GFRP high-strength bolts according to a certain rule, the bolt holes are pre-arranged on the insulation board, and the heat preservation...

Embodiment 3

[0071] refer to image 3 , this oil-gas multiphase flow multi-cavity thermal insulation composite pipeline structure system is composed of three pipelines connected by GFRP buckling-resistant energy dissipation dampers, and the three pipelines are arranged on the three vertices of an equilateral triangle. Among them, a single pipeline is composed of straight pipeline monomers and span pipeline monomers connected through integral nodes, combined Figure 13 As shown, the spanning pipe unit is formed by two seamless inner and outer layers of wound GFRP round pipes and self-compacting fine stone concrete sandwiched in the insulation board, as shown in Figure 9 , Figure 11 As shown, the inner side of the outer GFRP round tube is provided with GFRP shear connection keys according to a certain rule, and the outer side of the inner GFRP round tube is set with GFRP high-strength bolts according to a certain rule, and the insulation board and the inner GFRP round tube are fixed by do...

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Abstract

A structural system and construction method of an oil-gas multi-phase flow multi-cavity thermal insulation composite pipeline, which relates to the technical field of pipelines, and is composed of three pipelines sequentially connected through GFRP anti-buckling energy-dissipating dampers, and the axes of the three pipelines are sequentially connected to form Equilateral triangle, each pipeline includes pipeline monomer and integral node, the pipeline monomer includes outer GFRP circular tube, inner GFRP circular tube, self-compacting fine stone concrete layer and insulation board; the outer wall of the outer GFRP circular tube has There are bolt holes reserved for the outer GFRP round pipe; the two pipes are connected by an integral node, and the outer wall of the integral node is provided with concrete pouring holes and vent holes, and the concrete pouring holes and vent holes are distributed at intervals. The oil-gas multiphase flow multi-cavity thermal insulation combined pipeline structure system and construction method solve the problems of traditional pipelines such as small diameter, poor stability, poor impermeability, low transportation efficiency, single transportation mode and poor thermal insulation performance of transportation medium in cold regions.

Description

Technical field: [0001] The invention relates to the technical field of pipelines, in particular to a structural system and a construction method of an oil-gas multiphase flow multi-cavity thermal insulation composite pipeline. 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 sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/14F16L9/19F16L13/11F16L55/033F16L59/14F16L59/20B28B21/56B28B21/72B28B21/82
CPCB28B21/56B28B21/72B28B21/82F16L9/14F16L9/19F16L13/11F16L55/033F16L59/14F16L59/182F16L59/20
Inventor 张云峰计静马令勇杨毛毛李岩刘迎春
Owner NORTHEAST GASOLINEEUM UNIV