Production method for composite insulation pipe

Abstract

The invention belongs to the field of composite pipe. An insulation pipe sequentially comprises a nanometer silver coating layer, a porous silicone tube, a stainless steel pipe, a high temperature resistance fiber felt, a sodium silicate insulation pipe, a polyurethane foaming layer, a carbon steel layer and three PE coating layers from outside to inside; a positioning ring is arranged between thecarbon steel layer and the stainless steel pipe; the outer wall of the positioning ring extends outwards to be formed with a plurality of positioning bosses; the positioning ring is fixedly connectedto the outer wall of the stainless steel pipe in a sleeving manner; and the outer walls of the positioning bosses are fixed to the inner wall of the carbon steel layer. A production method comprisesthe following steps of stainless steel pipe preparation, composite pipe A preparation, composite pipe B preparation, composite pipe C preparation, composite pipe D preparation, composite pipe E preparation, composite pipe F preparation, composite pipe G preparation and insulation pipe preparation. The prepared insulation pipe has the advantages of strong antibacterial property, strong impact resistance, good high temperature resistance, good insulation performance, difficulty in deformation damage, long service life and the like, can be rebounded to an original state after deformation with heating and does not influence normal use of a product.

Description

technical field [0001] The invention relates to the field of composite pipes, in particular to a production method of composite heat preservation pipes. Background technique [0002] The existing composite pipes have poor strength resistance, are easily deformed and damaged after applying pressure, and cannot be restored to their original shape, which affects the normal use of the composite pipe, and there is no fixed positioning structure between the inner and outer pipes. As a result, the inner pipe is easy to slip, resulting in different local mechanical strengths of the pipe, making the composite pipe easy to damage; on the other hand, due to the alternation of cold and heat, the inner pipe may shrink in diameter, and then slip off from the outer pipe. [0003] There are various types of composite tubes. Among them, the thermal insulation tube has no antibacterial properties and will accumulate a large number of bacteria after long-term use. The nano-silver composite tub...

AI Technical Summary

Problems solved by technology

[0002] The existing composite pipes have poor strength resistance, are easily deformed and damaged after applying pressure, and cannot be restored to their original shape, which affects the normal use of the composite pipe, and there is no fixed positioning structure between the inner and outer pipes. As a result, the inner pipe is easy to slip, resulting in different local mechanical strengths of the pipe, which makes the composite pipe easy to be damaged; on the other hand, due to the alternation of cold and heat, the inner pipe may shrink and slip from the outer pipe.

[0003] There are various types of composite tubes. Among them, the thermal insulation tube has no antibacterial properties and will accumulate a large number of bacteria after long-term use. The nano-silver composite tube is a plastic composite tube composed of nano-silver coating, PPR tube and PEF tube. The nano-silver coating and The antibacterial agent is formed on the surface of the PPR tube. Since the PPR tube is not porous, the nano-silver coating on its surface will affect its antibacterial function, and the strength of the plastic composite tube is far inferior to that of the stainless steel tube. Afterwards, it is easy to be deformed and damaged, and has the defects of short life and poor heat preservation effect

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