Directly buried polyurethane Prefabrication Thermal insulation pipe Supplied by the manufacturer
Since the birth of polyurethane synthetic material in the 1930s, it has been rapidly developed as an excellent thermal insulation material, and its application scope is also increasingly wide. Because of its simple construction, remarkable energy-saving and anti-corrosion effects, polyurethane synthetic material has been widely used in various heating, cooling, oil transmission, steam transmission, etc The Conduit 。
It mainly consists of four parts.
(1) Work Steel pipe : According to the technical requirements of the transmission medium, the seam steel pipe, seamless steel pipe and double submerged arc spiral welded steel pipe are used respectively.
(2) Insulation layer: rigid polyurethane Foam plastic 。
(3) Protective shell: high-density polyethylene or glass fiber reinforced plastic.
(4) Leakage * * * line: When fabricating high-temperature prefabricated directly buried insulation pipes, * * * line is embedded in the insulation layer near the steel pipe. Once leakage occurs somewhere in the pipe, through the conduction of the alarm line, * * * on the * * * detection instrument can * * * show the exact location of the leakage and the size of the leakage degree, so as to notify the maintenance personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating network.
characteristic
Polyurethane insulation pipe has good characteristics such as light volume weight, high strength, heat insulation, sound insulation, flame retardancy, cold resistance, corrosion prevention, non water absorption, simple and fast construction, and has become an indispensable material for thermal insulation, waterproof, leak stoppage, and sealing in industrial sectors such as construction, transportation, petroleum, chemical industry, power, and refrigeration. Waterproof, anti-corrosion and aging resistance: since the closed cell rate of polyurethane foam is more than 92%, polyurethane foam can not only be used as the insulation layer of directly buried pipelines, but also effectively prevent water, moisture and other corrosive liquids and gases from penetrating, preventing the breeding and development of microorganisms. Polyurethane insulation pipe is very popular because of its excellent performance, convenient construction and long service life.
Stacking and storage of pipes
1. The pipe storage site shall be flat, free of sundries and ponding, and have sufficient bearing capacity.
2. The pipes shall be placed 2m away from the heat source and equipped with fire-fighting facilities.
3. Pipe sleepers must be padded when stacking pipes; The width of the pipe sleeper shall be greater than 150mm and the height shall be greater than 100mm. During storage, pipes of the same type shall be placed together, and 12m long pipes shall be placed layer by layer from the ground. Each layer can be stacked for a short time without whole blocks, but the height shall not be more than 1.5m.
4. During the storage of pipes; Both ends of the steel pipe shall be sealed, and it shall be covered with felt cloth when stored in the open air. It is forbidden to expose to the sun and rain.
5. Pipes shall be hoisted with slings with a width greater than 50mm.
6. During loading and unloading, it shall be lifted and placed gently to prevent bumping.
7. Vertical lifting shall be adopted for truck loading and unloading, and forklift can be used for container loading and unloading with the cooperation of loader. It is forbidden to use iron tools to pry or wire ropes to bind the outer casing directly during hoisting.
