Gaoqing County Steam Insulated Pipeline

厚度：

2、3、4

芯材：

聚氨酯

形状：

圆形

It has become a relatively mature advanced technology in some developed countries abroad. In the past decade or so, our country's heating engineering technicians have digested and absorbed this advanced technology and are promoting the development of domestic pipe network laying technology to a higher level. The practical results of more than ten years have fully proved that the laying method of black and yellow jacket insulation pipes has many advantages compared with traditional trench and overhead laying. Directly buried insulated pipes are closely combined with a steel pipe for transporting media, a high-density polyethylene outer casing, and a rigid polyurethane foam insulation layer between the steel pipe and the outer casing.


Brief introduction:
Prefabricated polyurethane directly buried insulated pipes not only have advanced technical and practical performance that are difficult to match with traditional trenches and overhead pipes, but also have significant social benefits and Economic benefits are also a powerful measure for heating and energy saving. The adoption of directly buried heating pipeline technology marks that the development of China's heating pipeline technology has entered a new starting point. With the further improvement and development of this advanced technology, it is imperative that heating pipes be directly buried instead of trenches and overhead.
Detailed description:
Overview of polyurethane insulation pipe: Prefabricated polyurethane direct buried insulation pipe is mainly composed of four parts.

Working steel pipes: Seamless steel pipes and double-sided submerged arc spiral welded steel pipes are used according to the technical requirements of the transmission medium.

Insulation layer: rigid polyurethane foam.

Protective shell: made of high-density polyethylene or fiberglass.

Leakage alarm line: When manufacturing prefabricated polyurethane directly buried insulated pipes, an alarm line is buried in the insulation layer close to the steel pipe. Once a leak occurs somewhere in the pipe, through the conduction of the alarm line, It can alarm and display the exact location and extent of leakage on a special detection instrument, so that maintenance personnel can be notified to deal with the leaking pipe section quickly and ensure the safe operation of the heating network.
Performance: Prefabricated polyurethane directly buried insulation pipe has good mechanical properties and thermal insulation properties. It can withstand high temperatures under normal circumstances. It can withstand high temperatures by modification or combination with other insulation materials. It is suitable for all kinds of hot and cold water. Insulation engineering for high and low temperature pipelines. Advantages:

Reduce project costs. According to calculations by relevant departments, double-pipe heating pipes can generally reduce the project cost by about 50% (using fiberglass as the protective layer) and % (using high-density polyethylene as the protective layer).

Low heat loss, saving energy.