Special joint for fiber reinforced composite hose
The combined structure of the inner and outer bell-and-spigot pipes, combined with the flange seal and drain hole design, solves the problems of insufficient sealing and pressure bearing capacity in pipeline repair, and achieves a fast and firm connection effect.
Patent Information
- Application Number
- CN202422850418.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In the existing technology, it is difficult to repair a damaged pipeline, the connection is complicated, and the sealing and pressure-bearing capacity are poor, especially the sealing and pressure-bearing capacity of the fiber-reinforced composite hose liner repair joint is insufficient.
A combination structure of inner bell-and-spigot pipe and outer bell-and-spigot pipe is adopted, a flange sealing structure is set between the two, and a certain taper and drain hole are set at the connection to achieve a tight connection and effective exhaust between the inner liner pipe and the original pipeline, and enhance friction to prevent slipping.
The fiber-reinforced composite hose is quickly and firmly connected to the original pipe, with good sealing and strong pressure-bearing capacity, which simplifies the installation process and improves repair efficiency.
Smart Images
Figure CN223360257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline lining repair pipe fittings, in particular to a special joint for a fiber-reinforced composite hose. Background Art
[0002] In existing technology, pipeline damage is primarily repaired by replacing the pipe. This approach is difficult to implement, requires extensive excavation, and is highly inefficient. After pressure pipelines are lined with fiber-reinforced composite hoses, connecting the lining pipe to the original pipe is the most critical technology for lining repair. Currently, the commonly used joints for lining repairs in the market use transition pipes, jacking pipes, and expansion rings. These joints are complex, time-consuming, labor-intensive, and complex to install. Furthermore, they have low pressure bearing capacity and poor sealing. Utility Model Content
[0003] The utility model provides a special joint for a fiber-reinforced composite hose, which solves the problem of poor sealing and pressure bearing capacity of a liner repair joint in the prior art.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A special joint for a fiber-reinforced composite hose comprises an inner bell-and-spigot pipe and an outer bell-and-spigot pipe. A flange is respectively provided at both ends of the outer bell-and-spigot pipe. The flange at one end of the outer bell-and-spigot pipe is connected to the original repaired pipe, and the flange at the other end of the outer bell-and-spigot pipe is connected to the inner bell-and-spigot pipe. A flange is also respectively provided at both ends of the inner bell-and-spigot pipe. The flange at one end of the inner bell-and-spigot pipe is connected to the outer bell-and-spigot pipe, and the flange at the other end of the inner bell-and-spigot pipe is connected to a new steel pipe. A certain taper is provided on the connecting surface between the inner bell-and-spigot pipe and the outer bell-and-spigot pipe, which plays a role in compressing the inner liner pipe and moving it for sealing during jacking.
[0006] A drain hole is provided between the original repaired pipe and the outer bell pipe to remove gas or water from the connection.
[0007] This new joint seals the inner liner and the repaired pipe together and can then be connected to other new or old pipes, as well as to other lined and repaired pipes. The inner and outer bell-and-spigot sealing surfaces utilize a flange seal structure. This sealing structure not only provides a good seal, but also increases friction during the insertion and operation of the inner bell-and-spigot pipe. This allows the fiber-reinforced composite hose to be inserted into the original pipe, preventing the inner liner joint from slipping during operation. The inner and outer bell-and-spigot pipes have a certain taper, compressing the inner liner and sealing it during insertion. The pressure-bearing capacity is controlled by the amount of compression.
[0008] The utility model adopts an integrated jacking structure and a sealing structure of inner and outer socket surfaces, which has a simple structure, quick installation and firm connection. At the same time, an emptying hole is provided between the inner liner pipe and the original pipeline to effectively remove air or water in the interlayer, and has the advantages of good sealing and strong pressure bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0010] Figure 1 This is a schematic diagram of the use state of the utility model;
[0011] Figure 2 This is a structural diagram of the inner bell-and-spigot pipe of the utility model;
[0012] Figure 3 It is a structural diagram of the external bell-and-socket pipe of the utility model.
[0013] In the figure, 1 is the inner bell-and-spigot pipe, 2 is the outer bell-and-spigot pipe, 3 is the original pipe flange, 4 is the fiber-reinforced composite hose, 5 is the original repaired pipe, 6 is the new steel pipe, and 7 is the drain hole. DETAILED DESCRIPTION
[0014] like Figure 1 、 Figure 2 and Figure 3 The figure shows a special joint for fiber-reinforced composite hoses, comprising an inner bell-and-spigot pipe 1 and an outer bell-and-spigot pipe 2. Each end of the outer bell-and-spigot pipe 2 is provided with a flange. One end of the outer bell-and-spigot pipe 2 is connected to the original pipe flange 3 of the original repair pipe 5, while the other end of the outer bell-and-spigot pipe 2 is connected to the inner bell-and-spigot pipe 1. The inner bell-and-spigot pipe 1 also has a flange at each end. One end of the inner bell-and-spigot pipe 1 is connected to the outer bell-and-spigot pipe 2, while the other end of the inner bell-and-spigot pipe 1 is connected to the new steel pipe 6. The connection surface between the inner bell-and-spigot pipe 1 and the outer bell-and-spigot pipe 2 is tapered to compress the inner liner and seal it during jacking. A drain hole 7 is provided between the original repair pipe 5 and the outer bell-and-spigot pipe 2 to remove gas or water from the connection.
[0015] This new joint seals the inner liner and the repaired pipe together, allowing for connection to new or existing pipes, as well as to other lined and repaired pipes. The inner and outer bell-and-spigot pipes utilize a flange seal structure. This sealing structure provides a seal while also increasing friction during the insertion and operation of the inner bell-and-spigot pipe. The fiber-reinforced composite hose (4) is placed inside the original repaired pipe (5), preventing the liner joint from slipping during operation. The inner and outer bell-and-spigot pipes (1) and (2) have a certain taper, compressing the inner liner during insertion and sealing. The pressure-bearing capacity is controlled by the amount of compression.
Claims
1. Special connector for fiber reinforced composite hose, characterized by It includes an inner bell-and-spigot pipe and an outer bell-and-spigot pipe. A flange is set at each end of the outer bell-and-spigot pipe. The flange at one end of the outer bell-and-spigot pipe is connected to the original repaired pipeline, and the flange at the other end of the outer bell-and-spigot pipe is connected to the inner bell-and-spigot pipe. A flange is also set at each end of the inner bell-and-spigot pipe. The flange at one end of the inner bell-and-spigot pipe is connected to the outer bell-and-spigot pipe, and the flange at the other end of the inner bell-and-spigot pipe is connected to the new steel pipe. The connecting surface between the inner bell-and-spigot pipe and the outer bell-and-spigot pipe is set with a certain taper.
2. The special joint for fiber reinforced composite hose according to claim 1, characterized in that A drain hole is provided between the original repaired pipe and the external bell pipe.