Fluorine-lined pipe with temperature-resistant and deformation-resistant structure

Through a three-layer structural design, including an inner PTFE-lined pipe, a middle steel wire skeleton reinforcement layer, and an outer stainless steel protective layer, combined with ceramic fiber felt insulation and silicone rubber connection, the problem of easy deformation and thermal stress of PTFE-lined pipes at high temperatures is solved, achieving the effect of temperature resistance and deformation resistance.

CN224414545UActive Publication Date: 2026-06-26JIANGSU TEFLON ANTICORROSION TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU TEFLON ANTICORROSION TECHNOLOGY CO LTD
Filing Date
2025-07-15
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing fluoropolymer-lined pipes are prone to softening and deformation at high temperatures. The difference in thermal expansion coefficients between the inner lining and the outer pipe generates thermal stress, leading to wear, delamination, or detachment of the inner lining. Traditional methods, such as thickening the outer pipe or wrapping it with insulation material, have limited effectiveness and are prone to aging.

Method used

It adopts a three-layer structure design. The inner layer is a polytetrafluoroethylene-lined fluoropolymer tube, the middle layer is a reinforced structural layer that integrates a spirally wound high-strength steel wire skeleton with high-temperature resistant resin, and the outer layer is a stainless steel protective layer. A ceramic fiber felt heat insulation buffer layer is set between the inner and middle layers. The fins and the fluoropolymer-lined tube are integrally formed. The filler block is made of low thermal conductivity material, and the connecting layer uses silicone rubber to absorb thermal stress.

Benefits of technology

It effectively relieves thermal stress, reduces heat transfer efficiency, reduces lining wear, enhances pipe bending resistance, extends service life, and prevents fin detachment and wear.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224414545U_ABST
    Figure CN224414545U_ABST
Patent Text Reader

Abstract

The utility model relates to a kind of fluorine-lined pipeline with temperature-resistant anti-deformation structure, the fluorine-lined pipe of its inner layer, fluorine-lined pipe is made of polytetrafluoroethylene material, its inner wall is smooth, for transporting corrosive medium;The reinforcing structure layer of middle layer, reinforcing structure layer includes high-strength steel wire framework spirally wound along the length direction of fluorine-lined pipe, and high-temperature resistant resin material filled in the gap of steel wire framework, steel wire framework and high-temperature resistant resin material solidification are integrated, to enhance the compression resistance and anti-deformation ability of pipeline;The protective layer of outer layer, protective layer is the outer tube of stainless steel material, outer tube is tightly set in the outside of reinforcing structure layer, for protecting internal structure and further improving the overall strength of pipeline, heat insulation buffer layer is set between fluorine-lined pipe and reinforcing structure layer, heat insulation buffer layer is ceramic fiber felt material, its thickness is 5-10mm, by this design, the heat conductivity coefficient of ceramic fiber felt still keeps low level with temperature rise, 5mm thickness can make heat conduction efficiency reduce more than 60%.
Need to check novelty before this filing date? Find Prior Art