一种增强焊接强度的金属孔网管骨架聚乙烯复合管
By setting a special perforation structure at the end of the composite pipe, the through cross-sectional area and axial cross-sectional area of the thermoplastic layer are increased, which solves the problem of insufficient bonding strength during electrofusion welding, achieves higher welding quality and long-term sealing performance, and improves the safety and durability of the pipeline system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG JINJIANG HIGH-TECH PLASTIC PIPE IND CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-17
AI Technical Summary
During electrofusion welding of existing metal mesh reinforced polyethylene composite pipes, the structural bonding strength at the pipe ends is insufficient, leading to loosening of the sealing ring and the medium seeping in along the steel-plastic interface, causing pipe delamination, reduced pressure bearing capacity, and safety hazards.
An opening structure is set at the end of the composite pipe to form a connecting section, so that the total through cross-sectional area and axial cross-sectional area of the thermoplastic layer are larger in the connecting section than in the main body section. By increasing the aperture and density, a stronger mechanical locking force is formed, improving the welding quality and sealing performance.
It enhances welding strength, prevents sealing rings from falling off, eliminates water leakage, improves the safety and durability of the pipeline system, and ensures pressure resistance and sealing reliability.
Smart Images
Figure CN224516161U_ABST
Abstract
Claims
1. A metal-reinforced polyethylene composite pipe with enhanced welding strength, comprising a porous metal skeleton and thermoplastic layers covering the inner and outer sides of the porous metal skeleton and interconnected through its pores, characterized in that, The porous metal skeleton includes at least one main section and at least one connecting section disposed at the end of the composite pipe along its length direction; the opening structure of the connecting section is different from the opening structure of the main section, such that the total through cross-sectional area provided for the thermoplastic layer per unit length of the porous metal skeleton on the connecting section is greater than the total through cross-sectional area of the main section, and such that the total cross-sectional area of the thermoplastic layer on the axial section passing through the center of the pore on the connecting section is greater than the total cross-sectional area of the thermoplastic layer on the axial section passing through the center of the pore on the main section.
2. The reinforced, weld-strength, metal-mesh-pipe-skeleton, polyethylene composite pipe of claim 1, wherein, The pores on the main body section are first through holes, and the pores on the connecting section are second through holes, the diameter of the second through hole being larger than the diameter of the first through hole.
3. The reinforced, weld-strength, metal-mesh-pipe-skeleton, polyethylene composite pipe of claim 2, wherein, The diameter of the second through hole is 1 mm to 3 mm larger than that of the first through hole.
4. The reinforced, high-strength, metal-mesh-carcass, polyethylene composite pipe of claim 1, wherein, The aperture density of the connecting section is greater than that of the main body section.
5. The reinforced, high-strength, metal-mesh-carcass, polyethylene composite pipe of claim 1, wherein, The opening in the main body section is a circular hole, and the opening in the connecting section is an oblong hole or an elliptical hole.