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Overhead central heating/cooling pipeline and overhead central heating/cooling pipe network

A technology for centralized heating and heating pipelines, which is applied in the direction of pipes/pipe joints/fittings, protection of pipelines through heat insulation, prevention of damage/wear of pipelines, etc. Low-level problems, to achieve the effect of quick repair, convenient transportation, and small hydraulic loss

Pending Publication Date: 2020-06-23
BEIJING HTN PIPELINE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Central heating secondary network pipelines and central cooling pipelines have relatively low requirements for working pipes. Traditional working pipes are steel pipes. Due to the shortcomings of steel pipes, which are easy to corrode, as transportation pipes, they have the disadvantages of low service life and high energy consumption. , can no longer meet the various high requirements of thermal insulation pipelines

Method used

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  • Overhead central heating/cooling pipeline and overhead central heating/cooling pipe network

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preparation example Construction

[0090] According to another aspect of the present invention, there is provided a method for preparing the above central heating / cooling pipeline for aerial use, comprising: inserting the medium delivery pipe into the metal outer protection pipe, fixing the medium delivery pipe and the metal outer protection pipe, and then The flame-retardant polyurethane foam raw material is injected into the cavity between the medium delivery pipe and the metal outer protective pipe for foaming to form a flame-retardant polyurethane insulation layer, thereby obtaining the central heating / cooling pipeline for overhead use. The method is scientific in process, simple and controllable, and the obtained pipeline can be used in cooling or heating scenarios, and is suitable for overhead laying. The pipeline has good corrosion resistance, good flame retardancy, light weight, simple maintenance and long service life.

[0091] In a preferred embodiment, the injection volume accuracy of the injection of...

Embodiment 1

[0123] Such as figure 1 As shown, a central heating pipeline for aerial use includes a medium delivery pipe 1, a flame-retardant polyurethane insulation layer 2, and a metal outer protective pipe 3 arranged in sequence from the inside to the outside. The medium delivery pipe is a PERT II type medium delivery pipe. The raw material produced by Total, the metal outer protective tube is galvanized iron outer protective tube;

[0124] The specifications of the heating pipeline are: the outer diameter of the PERT II medium delivery pipe is 25mm, the wall thickness S5 / SDR11 is 2.3mm, and the wall thickness S4 / SDR9 is 2.8mm; the outer diameter of the metal outer protection pipe is 75mm, and the wall thickness is 0.6 mm.

Embodiment 2

[0126] A central cooling pipeline for overhead use, including a medium delivery pipe, a flame-retardant polyurethane insulation layer and a metal outer protection pipe arranged in sequence from the inside to the outside, the medium delivery pipe is an HDPE medium delivery pipe, and the metal outer protection pipe is a galvanized iron sheet Protective tube;

[0127] Cooling pipes include water supply pipes and return pipes;

[0128] The specifications of the water supply pipe are: the outer diameter of the HDPE medium delivery pipe is 32mm, the wall thickness is 3mm, the outer diameter of the metal outer protection pipe is 140mm, the wall thickness is 0.6mm, and the thickness of the flame-retardant polyurethane insulation layer is 53.6mm;

[0129] The specifications of the return pipe are: the outer diameter of the HDPE medium delivery pipe is 32mm, the wall thickness is 3mm, the outer diameter of the metal outer protection pipe is 110mm, the wall thickness is 0.6mm, and the th...

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Abstract

The invention relates to the field of overhead pipelines, and specifically provides an overhead central heating / cooling pipeline and an overhead central heating / cooling pipe network. The overhead central heating / cooling pipeline comprises a medium conveying tube, a flame-retardant polyurethane thermal insulation layer and a metal outer protective tube which are sequentially arranged from inside tooutside, wherein the medium conveying tube comprises an HDPE medium conveying tube or a PERT II type medium conveying tube. The pipeline has the advantages of being resistant to corrosion, long in service life, small in water flow resistance, capable of saving energy consumption, small in weight, convenient in construction, simple in daily maintenance, good in flame resistance, and the like, is more suitable for building overhead laying, and has a bright application prospect.

Description

technical field [0001] The invention relates to the field of overhead pipelines, in particular to an overhead central heating / cooling pipeline and an overhead central heating / cooling pipe network. Background technique [0002] At present, my country's urbanization is developing at a high speed, and the corresponding residential area is also increasing rapidly. Since the beginning of the 21st century, the central heating area has increased at a rate of 200 million square meters per year, and the heat is directly sent to the secondary network of the heating user's room. It is also a huge scale of development. [0003] After entering the summer, the temperature of the high temperature limit is increasingly refreshed, and the temperature of people's air conditioners is adjusted lower and lower, and the start-up time is longer and longer, resulting in more and more frequent "power shortages". Centralized cooling systems are developed to utilize recycling The water pipeline system...

Claims

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Application Information

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IPC IPC(8): F16L9/147F16L57/00F16L57/04F16L59/02F17D1/08B29C44/18
CPCB29C44/18F16L9/147F16L57/00F16L57/04F16L59/02F16L59/028F17D1/08
Inventor 郭兰芳
Owner BEIJING HTN PIPELINE EQUIP