How to reduce the energy loss of polyurethane directly buried insulation pipe In the years, the construction of the city is gradually accelerating, and the materials required for the construction are also increasing year by year. For example, in the period of 2005-2010, if the insulation pipe is directly buried If the bricks of the wall are used for calculation, the loss in the past few years is basically about 650 billion pieces. In the domestic market, the price of ordinary bricks is 0.3 yuan, and the price of solid bricks is 1.60 billion yuan. Waste is huge.
The effect of the new type of insulation pipe promoted and used is very remarkable. It is a safe and environmentally friendly product. The degree of promotion in China is also basically 50%. We expect to reach 45 billion square meters by 2020. Achieve comprehensive energy saving and environmental protection.
The high temperature prefabricated polyurethane direct buried insulation pipe is mainly composed of four parts.
(1) Working steel pipe: According to the technical requirements of the conveying medium, the seamed steel pipe, the seamless steel pipe and the double-sided submerged arc spiral welded steel pipe are respectively used.
(2) Insulation layer: rigid polyurethane foam is used.
(3) Protective case: High density polyethylene or glass steel is used.
(4) Leakage alarm line: When manufacturing high-temperature prefabricated direct buried insulation pipe, the alarm line is buried in the insulation layer close to the steel pipe. Once the pipe leaks somewhere, it can be used in the special detection instrument through the transmission of the alarm line. The alarm is displayed and the exact position of the leak and the degree of leakage are displayed to inform the maintenance personnel to quickly handle the leaking pipe section and ensure the safe operation of the heat network.
In the past few years, the loss is basically about 650 billion pieces. In the domestic market, the price of ordinary brick is 0.3 yuan, and the price of solid brick is 1.60 billion yuan. This waste is huge.
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