Thermal insulation anti-corrosive high pressure bearing special steel-plastic composite pipe

Abstract

The invention relates to a thermal insulation anti-corrosive high pressure bearing special steel-plastic composite pipe, which includes a steel pipe, wherein an inner coating layer is arranged on the inner wall surface of the steel pipe, an outer coating layer is arranged on the outer wall surface of the steel pipe, and the inner coating layer and the outer coating layer are polyethylene coating layers or epoxy resin coating layers; an inner thermal insulation coating layer is arranged on the inner wall surface of the inner coating layer; a silicon nano aerogel felt layer can be coated on the outer wall surface of the outer coating layer, and a polyethylene protective layer (5) can be arranged on the outer wall surface of the silicon nano aerogel felt layer; and an outer thermal insulation layer can be arranged on the outer wall surface of the outer coating layer. The metal pipe adopts a composite structure, is highly fireproof, temperature resistant, antistatic and flame retardant, can effectively prevent the heat conduction in the pipeline, can prevent the heat radiation and loss of high temperature object, can perform effective cold insulation for the low temperature object and effectively prevent the cold loss caused by the environmental radiation heat, and can prevent the condensation of objects.

Description

technical field [0001] The invention relates to a new type of metal pipe, which is mainly used for the transportation of liquid medium, especially the transportation of cold and hot water in tunnels or mines. The pipe can also be used for civil heating pipes, and especially relates to a special steel-plastic pipe for heat preservation, anticorrosion and high pressure. Tube. Background technique [0002] As the mining depth of coal mines continues to increase, geothermal phenomena in major coal mines across the country are becoming more and more serious. The problem of geothermal disasters in Huainan Mining Group is particularly prominent, and the temperature in some areas can reach 43 °C. At present, to solve the problem of high temperature in the underground working face of coal mines, the main measures are to increase the air convection speed to cool down, reduce the heat dissipation of electromechanical equipment in the mine, and reduce the mining time of miners, but none...

AI Technical Summary

Problems solved by technology

At present, to solve the problem of high temperature in the underground working face of coal mines, the main measures are to increase the air convection speed to cool down or reduce the heat dissipation of electromechanical equipment in the mine, and reduce the mining time of miners, but none of them can effectively solve the problem of heat damage.

At present, the non-refrigerated air-conditioning cooling measures in mines can no longer meet the operating environment requirements of the working face, and it is imperative to take air-conditioning cooling measures

However, ordinary fluorine-based refrigeration and air-conditioning cannot be used in the special environment of coal mines, and water cooling must be used. The cold water of the refrigeration and air-conditioning is transported from the ground to the mine working surface. The flame retardant and antistatic properties of pipes have not been solved well; it is mainly heat-insulated by filling foam plastics. Because it is filled manually, the foam plastic wrapping, the filling layer and the foam layer are very thick, and it is easy to cause insufficient filling and wrapping. Even, the insulation effect is not good, and the construction and installation are also very inconvenient

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