一种大直径快速堵漏装置
By using a large-diameter rapid leak-sealing device with a sealing ring and a fixing ring structure, combined with axial tightening bolts and radial sealing strips, the problem of flange leakage in the power station's water supply system was solved, achieving efficient sealing and rapid repair.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, leakage occurs frequently at the flange welding joints of power plant water supply systems. Traditional leak sealing methods are labor-intensive, inefficient, and affect the circulation of the water supply system.
A large-diameter, rapid leak-sealing device is adopted, including a sealing ring and a fixing ring. A combination of axial tightening bolts and radial sealing strips is used to achieve a double seal on the flange. The axial tightening bolts apply axial tightening force and the radial sealing strips grip the pipe wall to form two seals.
It improved the sealing effect and pressure resistance, shortened the repair time, improved the efficiency of emergency repairs, and reduced the workload on site.
Smart Images
Figure CN224516314U_ABST
Abstract
Claims
1. A large-diameter rapid leak-sealing device, characterized in that: Includes a sealing ring (1) and a fixed ring (2) parallel to and spaced from the sealing ring (1) and clamped on the pipe (8). A plurality of axial tightening bolts (6) are provided between the sealing ring (1) and the fixed ring (2). The axial tightening bolts (6) apply an axial tightening force toward the flange (7) to the sealing ring (1). The sealing ring (1) and the fixed ring (2) are located on the same side of the flange (7).
2. The large-diameter rapid leak-sealing device according to claim 1, characterized in that, The plurality of axial tightening bolts (6) are evenly distributed along the circumference of the sealing ring (1) and the fixing ring (2).
3. The large-diameter rapid leak-sealing device according to claim 2, characterized in that, One end of the threaded rod of the axial tightening bolt (6) is screwed into the threaded hole of the fixed ring (2), the nut is close to the end face of the fixed ring (2), and the other end of its threaded rod abuts against the end face of the back flange (7) of the sealing ring (1).
4. The large-diameter rapid leak-sealing device according to claim 1, characterized in that, The inner circumferential surface of the sealing ring is provided with a radial sealing strip (4) for sealing contact with the outer wall of the pipe (8).
5. The large-diameter rapid leak-sealing device according to claim 4, characterized in that, The radial sealing strip (4) is embedded in the first annular groove on the inner circumferential surface of the sealing ring (1).
6. The large-diameter rapid leak-sealing device according to claim 1, characterized in that, An axial sealing strip (3) is provided on the end face of the sealing ring facing the flange (7).
7. The large-diameter rapid leak-sealing device according to claim 6, characterized in that, The axial sealing strip (3) is embedded in the second annular groove opened on the end face of the sealing ring (1).
8. The large-diameter rapid leak-sealing device according to claim 1, characterized in that, The sealing ring (1) is formed by two sealing semi-circular rings, which are connected and fixed by radial locking bolts (5).
9. The large-diameter rapid leak-sealing device according to claim 1, characterized in that, The fixed ring (2) is formed by two fixed semi-circular rings, which are connected and fixed by radial locking bolts (5).