一种耐高温的嵌套式蜂窝夹套氟塑料复合管道
By using a nested honeycomb jacket structure and thermally conductive silicone, the interfacial stress and deformation problems of fluoropolymer-lined pipes under high-temperature vacuum conditions are solved, thereby improving the pipes' compressive strength and safety.
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
- 2026-07-17
AI Technical Summary
Existing fluoropolymer-lined pipes are prone to interfacial stress delamination, spalling, and pipe wall deformation under high-temperature media transmission or vacuum negative pressure conditions, increasing equipment maintenance costs and safety risks.
It adopts a nested honeycomb jacket structure, with the inner and outer honeycomb jackets made of high-temperature resistant alloy. Ceramic fiber pillars are set between the inner and outer honeycomb jackets to form a supporting truss. The outer honeycomb jacket is filled with thermally conductive silicone. The inner wall of the fluorine straight pipe is provided with spiral flow guiding ribs to enhance rigidity.
It improves the compressive strength and circumferential stiffness of the pipeline, reduces the surface temperature of the outer steel pipe, reduces heat loss, avoids pipe wall deformation and local stress concentration, and enhances safety and equipment life.
Smart Images
Figure CN224516162U_ABST
Abstract
Claims
1. A high temperature resistant nested honeycomb jacketed fluoroplastic composite pipe, characterized in that: The device includes a fluorine straight pipe (1), an outer steel pipe (2), and a honeycomb jacket. The honeycomb jacket is disposed between the fluorine straight pipe (1) and the outer steel pipe (2). The honeycomb jacket includes an inner honeycomb jacket (3) and an outer honeycomb jacket (4). Both the inner honeycomb jacket (3) and the outer honeycomb jacket (4) are made of high-temperature resistant alloy. An opening is provided between the honeycomb holes of the inner honeycomb jacket (3) and the outer honeycomb jacket (4). A ceramic fiber support column (5) is fixedly disposed in the opening. The ceramic fiber support column (5) and the inner and outer honeycomb jackets form a supporting truss. Thermally conductive silicone (6) is disposed in the honeycomb holes of the outer honeycomb jacket (4).
2. The nested honeycomb jacketed fluoroplastic composite pipe according to claim 1, wherein: The inner wall of the fluorine straight tube (1) is provided with a flow guiding rib (7). The flow guiding rib (7) is integrally formed in a spiral shape on the inner wall of the fluorine straight tube (1). The material of the flow guiding rib (7) is the same as that of the fluorine straight tube (1), both being made of PTFE material.
3. The nested honeycomb jacketed fluoroplastic composite pipe according to claim 1, wherein: The honeycomb holes of the inner honeycomb jacket (3) are a composite structure of regular hexagons and circles. The side length of the regular hexagon is 5-8mm, and the circle is inscribed in the regular hexagon with a diameter of 4-6mm.
4. The nested honeycomb jacketed fluoroplastic composite pipe according to claim 2, wherein: The helix angle of the guide rib (7) is 15-25°, the rib height is 3-5% of the inner diameter of the pipe, the cross section of the guide rib (7) is an isosceles trapezoid, and the parameter combination of the guide rib (7) increases the fluid turbulence by 30% and the flow resistance increases by no more than 5%.
5. The nested honeycomb jacketed fluoroplastic composite pipe according to claim 4, wherein: The surface of the flow guide rib (7) is provided with staggered microgrooves, the spacing between adjacent microgrooves is 0.5-1mm, and the angle between the microgrooves and the fluid flow direction is 45-60°.