Heat-insulation PVC (polyvinyl chloride) plastic pipeline

Abstract

The invention provides a heat-insulation PVC (polyvinyl chloride) plastic pipeline which comprises a PVC pipe, a metal heat-conducting layer, a heat-insulation layer, an anticorrosion layer and a solar cell panel. The heat-insulation layer encircles the PVC pipe, the anticorrosion layer is coated on an outer layer of the heat-insulation layer, the metal heat-conducting layer can generate heat under the effect of the solar cell panel, is a netted resistance layer and is connected with wires, resistance wires are longitudinally and transversely staggered on one another to form the netted resistance layer, and the other ends of the wires and the solar cell panel are connected with one another to form a closed circuit. The heat-insulation PVC plastic pipeline has the advantages that currents can be generated by the solar cell panel under the sun illumination conditions in the daytime and can be conducted to the netted resistance layer via the wires, electric energy can be converted into heat energy, the heat can be sustained at night by the aid of the heat-insulation layer, and accordingly freeze protection effects an be realized for the PVC pipe without external power sources; owing to protection of the anticorrosion layer which is the outermost layer, the heat-insulation PVC plastic pipeline can be buried under the ground, and is excellent in water resistance, impact resistance, anticorrosion property and flame resistance, simple in structure and easy to manufacture.

Description

technical field [0001] The invention belongs to the field of PVC plastic pipes, in particular to a thermal insulation PVC plastic pipe. Background technique [0002] In the existing technology, pipelines such as underground water pipes and sewage pipes are generally made of PVC materials. However, due to their poor antifreeze performance, this kind of water pipes is easy to freeze and crack in cold winters, resulting in large areas of overflowing and running. Residential or industrial impacts on use and travel. Such an antifreeze water pipe is disclosed in the existing patent specification CN202580447U. A resistance ribbon is wound on the outside of the water pipe. The resistance ribbon is connected with a power supply, and the power supply is turned on and off by a switch with a temperature sensor. When the temperature reaches a certain low temperature, the switch with the temperature sensor is powered on, so that the resistance ribbon is energized and heated to melt and p...

AI Technical Summary

Problems solved by technology

However, this structure does not have a heat preservation device and a protection device outside the resistance wire. In the cold winter, the heat will be lost quickly, and continuous power supply is required, resulting in a waste of electric energy, and it cannot be directly buried in the ground.

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