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Phase-change heat-preservation double-flow water composite pipe containing TPU (thermoplastic polyurethane) layer

A composite pipe and phase change technology, which is applied in the direction of heat preservation and protection of pipes and pipes through heat insulation, can solve the problems of lack of PPR pipes, the water temperature does not meet the requirements, and it does not meet the requirements of energy saving and emission reduction. The effect of strong aging and good thermal insulation effect

Pending Publication Date: 2022-04-12
WUHAN KINGBULL ECONOMIC DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its excellent comprehensive performance, PPR (random copolymer polypropylene) pipes have been widely used in the industrial field in recent years, especially in the application of indoor and outdoor hot and cold water pipes. Seriously, the water temperature does not meet the requirements during the customer's use, and the energy consumption is increased, which does not meet the national energy conservation and emission reduction policy requirements
At present, there are very few domestic studies on the heat loss of PPR pipes, and there are basically no such PPR pipes on the market.

Method used

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  • Phase-change heat-preservation double-flow water composite pipe containing TPU (thermoplastic polyurethane) layer
  • Phase-change heat-preservation double-flow water composite pipe containing TPU (thermoplastic polyurethane) layer
  • Phase-change heat-preservation double-flow water composite pipe containing TPU (thermoplastic polyurethane) layer

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The structure of the phase-change thermal insulation double-flow composite pipe containing the TPU layer of the present embodiment is as follows figure 1 As shown, the first PPR pipe 4 and the second PPR pipe 5 are included, the first PPR pipe 4 and the second PPR pipe 5 are wrapped with the thermal insulation layer 3, the thermal insulation layer 3 is wrapped with the heat insulation layer 2, and the heat insulation layer 2 is wrapped with the PPR Layer 1, the ratio of the thickness of PPR layer 1, the thickness of heat insulation layer 2 and the radius of heat insulation layer 3 is 1:0.1:0.2.

[0019] The insulation layer is extruded by PPR modified by phase change material. The phase change material is a mixture of paraffin wax and n-eicosane. The mass ratio of paraffin wax, n-eicosane and PPR is 1:1:1; the heat insulation layer Extruded from thermoplastic polyurethane elastomer (TPU).

Embodiment 2

[0021] The phase-change thermal insulation double-flow water composite pipe containing the TPU layer of this embodiment comprises a first PPR pipe and a second PPR pipe, the first PPR pipe and the second PPR pipe are wrapped with an insulation layer, and the heat insulation layer is wrapped with a heat insulation layer for heat insulation. The layer is wrapped with a PPR layer, and the ratio of the thickness of the PPR layer, the thickness of the heat insulation layer and the radius of the heat insulation layer is 1:0.1:0.2.

[0022] The insulation layer is extruded by PPR modified by phase change material. The phase change material is a mixture of paraffin wax and n-eicosane. The mass ratio of paraffin wax, n-eicosane and PPR is 1:2:1; the heat insulation layer Extruded from thermoplastic polyurethane elastomer (TPU).

Embodiment 3

[0024] The phase-change thermal insulation double-flow water composite pipe containing the TPU layer of this embodiment comprises a first PPR pipe and a second PPR pipe, the first PPR pipe and the second PPR pipe are wrapped with an insulation layer, and the heat insulation layer is wrapped with a heat insulation layer for heat insulation. The layer is wrapped with a PPR layer, and the ratio of the thickness of the PPR layer, the thickness of the heat insulation layer and the radius of the heat insulation layer is 1:0.2:0.2.

[0025] The insulation layer is extruded from PPR modified by phase change material. The phase change material is a mixture of paraffin wax and n-eicosane. The mass ratio of paraffin wax, n-eicosane and PPR is 1:1:1; heat insulation The layers are extruded from thermoplastic polyurethane elastomer (TPU).

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Abstract

The phase-change heat-preservation double-flow water composite pipe comprises a first plastic pipe and a second plastic pipe, the first plastic pipe and the second plastic pipe are wrapped with heat-preservation layers, the heat-preservation layers are wrapped with heat-insulation layers, the heat-insulation layers are wrapped with plastic layers, and the heat-preservation layers are formed by extruding phase-change material modified plastic. The phase change material is a mixture of paraffin and n-eicosane, and the thermal insulation layer is formed by extrusion molding of thermoplastic polyurethane elastomer rubber. The composite pipe is good in heat preservation and insulation effect and is a double-flow water pipe, the installation complexity is reduced, and the pipe installation convenience is improved.

Description

technical field [0001] The invention relates to the field of pipe material processing, in particular to a phase-change thermal insulation double-flow composite pipe containing a TPU layer. Background technique [0002] Due to its excellent comprehensive performance, PPR (random copolymer polypropylene) pipes have been widely used in the industrial field in recent years, especially in the application of indoor and outdoor hot and cold water pipes. Seriously, the water temperature does not meet the requirements during the customer's use, and the energy consumption is increased, which does not meet the national policy requirements for energy conservation and emission reduction. At present, there are very few domestic studies on the heat loss of PPR pipes, and there are basically no such PPR pipes on the market. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a phase-change thermal insulation d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/19F16L59/02
Inventor 陈厚忠
Owner WUHAN KINGBULL ECONOMIC DEV