Water supply pipeline inspection opening anti-leakage structure
By combining bolt parallel insertion and annular sealing groove in the sealing design, the high material consumption and leakage risk of traditional water supply pipeline inspection port sealing structures are solved, achieving the effect of reducing material consumption and improving sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JI NAN CITY TAP WATER CORP
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional water supply pipeline inspection port sealing structures suffer from high material consumption, uneven deformation leading to leakage risks, and frequent maintenance issues.
The design adopts parallel bolt insertion, eliminating the threaded hole on the connecting flange. The connection is achieved through nuts and bolts, and a combination sealing structure of annular sealing groove and sealing ring is set at the outer end of the connecting flange to enhance the sealing effect.
It reduces material consumption, improves sealing performance, reduces maintenance frequency, and meets the requirements of lightweight design.
Smart Images

Figure CN224352641U_ABST