Integral independent glass fiber reinforced plastic pipe joint
By designing an integrated independent FRP pipe joint, and utilizing a combination structure of full-width rubber rings, rubber ring stops, and water-swellable rubber rings, the problems of insufficient sealing and difficult installation of FRP pipe joints are solved, achieving a connection effect with good sealing performance and convenient installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA XINSHI PIPELINE
- Filing Date
- 2025-07-04
- Publication Date
- 2026-05-15
AI Technical Summary
Existing fiberglass pipe joints have insufficient sealing performance and are difficult to install, especially during high-pressure pipeline construction where the resistance is high and it is difficult to meet the drainage pressure resistance requirements.
An integral independent fiberglass pipe joint was designed, comprising a full-width rubber ring, a fiberglass sleeve wrapped around the outer wall of the rubber ring, and a rubber ring stop on the inner wall. The rubber ring expands when exposed to water and is locked between the stop. The rubber ring stop abuts against the inclined plane of the fiberglass pipe end face, forming a wedge structure to improve sealing performance, and the sealing effect is enhanced by the labyrinth gap.
It achieves excellent sealing performance and ease of installation. The rubber ring expands under water pressure to enhance the seal, resulting in low resistance during installation and making it suitable for drainage pipe connections.
Smart Images

Figure CN224245710U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass pipe technology, specifically to an integral independent fiberglass pipe joint. Background Technology
[0002] Fiberglass pipes are fixed-length pipes, with double O-ring socket connections. When continuously wound fiberglass pipes cannot use connectors with built-in sockets, an independent O-ring connector is required. Currently available integrated O-ring connectors are primarily for high-pressure pipelines, resulting in high resistance and installation difficulty during construction. To meet the needs of the drainage pipe market, it is necessary to develop a fiberglass pipe connector that offers excellent sealing, meets drainage pressure resistance requirements, and is easy to install. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an integral independent fiberglass pipe joint for connecting fiberglass pipes, which has the advantages of good sealing performance and convenient installation.
[0004] The technical solution of this utility model is:
[0005] An integral independent fiberglass pipe joint includes a full-width rubber ring, a fiberglass sleeve wound around the outer wall of the full-width rubber ring, at least two rubber ring stops provided on the inner wall of the full-width rubber ring and spaced apart, and a water-swellable rubber ring clamped between two adjacent rubber ring stops, wherein the rubber ring stops are integrally formed with the full-width rubber ring.
[0006] When the integral independent FRP pipe joint is used to connect FRP pipes, the rubber ring stop abuts against the end face of the adjacent FRP pipe, and the full-width rubber ring is fitted on the outer wall of the two connected FRP pipes.
[0007] Furthermore, the surface on which the rubber ring stop abuts against the fiberglass pipe wall is an inclined plane.
[0008] Furthermore, the full-width rubber ring includes a body and a plurality of sealing rings disposed on the inner wall of the body. When the full-width rubber ring is fitted onto the outer wall of the fiberglass tube, the sealing rings and the outer wall of the fiberglass tube form a labyrinth gap.
[0009] Furthermore, the number of rubber ring stoppers is 2-3.
[0010] Compared with the prior art, the integral independent fiberglass pipe joint provided by this utility model has the following advantages:
[0011] I. The integral independent FRP pipe joint of this utility model has at least two rubber ring stops on the inner wall of the full-width rubber ring. A water-swellable rubber ring is inserted between the rubber ring stops. When the integral independent FRP pipe joint is used to connect FRP pipes, the rubber ring stops abut against the end face of the adjacent FRP pipe, and the full-width rubber ring is fitted on the outer wall of the two connected FRP pipes. After water flows through the FRP pipes, the water-swellable rubber ring expands, making the contact between the rubber ring stops and the FRP pipe tighter. Together with the full-width rubber ring, it forms a double-safety sealing effect.
[0012] II. In the integral independent fiberglass pipe joint of this utility model, the surface of the rubber ring stop that abuts against the end face of the fiberglass pipe is a sloping plane, so that the rubber ring stop forms a wedge-shaped structure, resulting in a better sealing effect.
[0013] III. The integral independent fiberglass pipe joint of this utility model can be installed by inserting the ends of the two fiberglass pipes to be connected into the full-width rubber ring, so that the end face of the fiberglass pipe abuts against the rubber ring stop. It is easy to install and has low resistance. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a structural schematic diagram of the integral independent fiberglass pipe joint of this utility model. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, and to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described below.
[0017] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding of the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0018] Please see Figure 1 This is a structural schematic diagram of the integral independent fiberglass pipe joint of this utility model. The integral independent fiberglass pipe joint 100 of this utility model includes a full-width rubber ring 1, a fiberglass sleeve 2 wrapped around the outer wall of the full-width rubber ring 1, a rubber ring stop 3 provided on the inner wall of the full-width rubber ring, and a water-swellable rubber ring 4.
[0019] In this invention, the rubber ring stop 3 and the full-width rubber ring 1 are integrally formed, which helps to improve its structural stability. There are at least two rubber ring stops 3, spaced apart. A water-swellable rubber ring 4 is engaged between two adjacent rubber ring stops. Preferably, there are 2-3 rubber ring stops 3. When the integral independent fiberglass pipe joint 100 is used to connect fiberglass pipes 200, the rubber ring stop 3 abuts against the end face of the adjacent fiberglass pipe 200, and the full-width rubber ring 1 is fitted onto the outer wall of the two connected fiberglass pipes.
[0020] In this utility model, the full-width rubber ring 1 includes a body 11 and a plurality of sealing rings 12 disposed on the inner wall of the body 11. When the full-width rubber ring 1 is fitted onto the outer wall of the fiberglass pipe, the sealing rings 12 and the outer wall of the fiberglass pipe form a labyrinth gap, which has good sealing performance.
[0021] The main materials of the water-swellable rubber ring 4 include high-molecular inorganic water-absorbing and swelling material and rubber. Specifically, the water-swellable rubber ring is refined from high-molecular inorganic water-absorbing and swelling material and rubber. This material has good elasticity and extensibility, and can expand upon contact with water, thus playing a role in waterproof sealing. After water flows through the fiberglass pipe, the water-swellable rubber ring 4 expands, making the contact between the rubber ring stop and the fiberglass pipe tighter, and together with the full-width rubber ring, forming a double-protection sealing effect.
[0022] To further improve the sealing effect, preferably, the surface of the rubber ring stop 3 that abuts against the wall of the fiberglass pipe 200 is an inclined plane, so that the rubber ring stop forms a wedge-shaped structure and the sealing effect is better.
[0023] This utility model features an integral independent fiberglass pipe joint. During installation, the ends of the two fiberglass pipes to be connected are inserted into the full-width rubber ring, so that the end face of the fiberglass pipe abuts against the rubber ring stop. It is easy to install and has low resistance.
[0024] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.
Claims
1. An integral, independent fiberglass pipe joint, characterized in that, It includes a full-width rubber ring, a fiberglass sleeve wrapped around the outer wall of the full-width rubber ring, at least two rubber ring stops provided on the inner wall of the full-width rubber ring and spaced apart, and a water-swellable rubber ring that is locked between two adjacent rubber ring stops, wherein the rubber ring stops are integrally formed with the full-width rubber ring. When the integral independent FRP pipe joint is used to connect FRP pipes, the rubber ring stop abuts against the end face of the adjacent FRP pipe, and the full-width rubber ring is fitted on the outer wall of the two connected FRP pipes.
2. The integral independent fiberglass pipe joint according to claim 1, characterized in that, The surface of the rubber ring stop that abuts against the wall of the fiberglass pipe is an inclined plane.
3. The integral independent fiberglass pipe joint according to claim 1, characterized in that, The full-width rubber ring includes a body and multiple sealing rings disposed on the inner wall of the body. When the full-width rubber ring is fitted onto the outer wall of the fiberglass tube, the sealing rings and the outer wall of the fiberglass tube form a labyrinth gap.
4. The integral independent fiberglass pipe joint according to any one of claims 1-3, characterized in that, The number of rubber ring stoppers is 2-3.