Glass fiber reinforced plastic sleeve connecting device

Abstract

The utility model discloses a glass fiber reinforced plastic sleeve connecting device which comprises a left glass fiber reinforced plastic pipe, a right glass fiber reinforced plastic pipe and a butt joint sleeve, and the butt joint position of the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe is sleeved with the butt joint sleeve. According to the utility model, the butt-joint sleeve, the butt-joint sealing ring, the sealing rubber ring, the steel ring, the outer bonding layer and the inner bonding layer are adopted to form the sleeve connecting device for the butt-joint position of the glass reinforced plastic pipes, and the left glass reinforced plastic pipe and the right glass reinforced plastic pipe move oppositely and are respectively inserted into the butt-joint sleeve; due to the fact that the sealing rubber rings with the built-in steel rings are distributed in the gaps between the butt joint sleeve and the left glass steel pipe and between the butt joint sleeve and the right glass steel pipe, the middle-frequency heating coil and the high-frequency heating coil are aligned to the installation positions of the sealing rubber rings. And after the steel ring is heated, the sealing rubber ring and the outer bonding layer and the inner bonding layer coated on the two surfaces of the sealing rubber ring are quickly melted.

Description

Technical Field

[0001] The utility model relates to the field of glass fiber reinforced plastic pipes, in particular to a glass fiber reinforced plastic sleeve connecting device. Background Art

[0002] FRP is also known as glass fiber reinforced plastic. Among them, FRP pressure pipe (process pipe) is a new type of composite pipe composed of glass fiber and unsaturated polyester resin. It is mainly used for buried pipes and overhead pipes. It has the advantages of light weight, high strength, corrosion resistance, long service life, convenient transportation and installation, low maintenance cost and low comprehensive cost, which can save a lot of money for construction projects. The existing FRP pipes are mainly connected by socket joint, flange connection or hand paste wrapping. The pipeline laying speed is slow, labor-intensive and material-intensive. The open ring groove at the end of the pipe is connected with sealing filling glue, which will damage the end wall of the pipe and there is a risk of leakage.

[0003] After searching, the publication number CN219076578U is a glass fiber reinforced plastic pipe positioning docking device, including a sleeve component and a rubber ring evenly arranged on the inner wall surface of the sleeve component; the sleeve component is a circular tube structure with openings at both ends, the inner diameter of the sleeve component is larger than the inner diameter of the glass fiber reinforced plastic pipe, and 4 circles of grooves are evenly arranged on the inner wall surfaces at both ends of the sleeve component, and a rubber ring is fixed in each groove; the glass fiber reinforced plastic pipe is directly inserted into the socket docking device, the surface of the rubber ring is tightly connected and matched with the outer wall of the glass fiber reinforced plastic pipe, effectively ensuring the reliability of the connection between the pipe socket and the spigot, and an undercut clamp is provided, which can effectively provide a stable connection and prevent the glass fiber reinforced plastic pipe from being pulled out of the docking device, and a retaining ridge is provided, which can effectively ensure the symmetry of the connection of the glass fiber reinforced plastic pipes on both sides of the docking device, avoid the problem of excessive insertion of the glass fiber reinforced plastic pipe on one side, and have good connection reliability.

[0004] However, the FRP pipe docking device in the above scheme is mainly sealed and fixed by rubber rings. In actual use, the rubber rings are easily aged due to the erosion of the FRP pipe installation environment, resulting in the sealing structure of the FRP pipe docking part being realized, and then leakage of the pipe occurs.

[0005] To this end, a fiberglass sleeve connection device is proposed, which has the advantages of quick docking and good anti-leakage effect, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a glass fiber reinforced plastic casing connection device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a glass fiber reinforced plastic casing connection device, comprising a left glass fiber reinforced plastic pipe, a right glass fiber reinforced plastic pipe and a docking sleeve, the docking sleeve is installed at the docking point of the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe, and a docking sealing ring is bonded to the middle position of the inner side of the docking sleeve, both sides of the docking sealing ring are integrally injection-molded with extension rings, and the extension rings on both sides of the docking sealing ring extend to the inner side of the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe respectively, a group of sealing rubber rings are respectively arranged on both sides of the inside of the docking sleeve, and the two groups of sealing rubber rings are respectively in contact with the outer walls of the ports of the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe, and each sealing rubber ring is installed with a steel ring inside, the outer ring of the sealing rubber ring is coated with an outer bonding layer, and the inner ring of the sealing rubber ring is coated with an inner bonding layer.

[0008] As a further description of the above technical solution: a bell mouth is arranged at the inner opening of the extension ring, and the outer ring of the extension ring abuts against the inner wall of the left glass fiber reinforced plastic pipe or the right glass fiber reinforced plastic pipe.

[0009] As a further description of the above technical solution: the outer adhesive layer and the inner adhesive layer are both made of EVA hot melt adhesive, and the thickness of the outer adhesive layer and the inner adhesive layer are both 1-3 mm.

[0010] As a further description of the above technical solution: two annular grooves are formed at the edges of both sides of the butt sealing ring, and the two annular grooves are respectively abutted against the end faces of the left fiberglass reinforced plastic pipe and the right fiberglass reinforced plastic pipe facing each other.

[0011] As a further description of the above technical solution: an annular gap is formed between the docking sleeve and the left fiberglass reinforced plastic pipe or the right fiberglass reinforced plastic pipe, and the thickness of the sealing rubber ring is adapted to the size of the annular gap.

[0012] As a further description of the above technical solution: the inner diameter of the docking sleeve is larger than the diameter of the left fiberglass reinforced plastic pipe or the right fiberglass reinforced plastic pipe, and the diameters of the left fiberglass reinforced plastic pipe and the right fiberglass reinforced plastic pipe are the same.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, a butt sleeve, a butt sealing ring, a sealing rubber ring, a steel ring, an outer bonding layer and an inner bonding layer are used to form a sleeve connection device at the butt joint of a glass fiber reinforced plastic pipe. The left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe are moved toward each other and the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe are respectively inserted into the butt sleeve, so that the extension rings on both sides of the butt sealing ring are respectively inserted into the inner walls of the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe. Since the sealing rubber ring of the built-in steel ring is distributed at the gap where the butt sleeve and the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe are connected, the installation position of the sealing rubber ring is aligned with the medium and high frequency heating coils, so that the steel ring is heated to quickly melt the sealing rubber ring and the outer bonding layer and the inner bonding layer coated on both sides, so that the left glass fiber reinforced plastic pipe and the right glass fiber reinforced plastic pipe can be firmly butted. Compared with the prior art, the disadvantage that the sealing structure is easy to age is avoided, and the anti-leakage effect is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a glass fiber reinforced plastic casing connection device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a butt seal ring of a glass fiber reinforced plastic casing connection device of the utility model;

[0017] Figure 3 The utility model is a cross-sectional view of a sealing rubber ring of a glass fiber reinforced plastic casing connection device.

[0018] Legend:

[0019] 1. Left FRP pipe; 2. Right FRP pipe; 3. Docking sleeve; 4. Docking sealing ring; 5. Sealing rubber ring; 6. Steel ring; 7. Bell mouth; 8. Extension ring; 9. Outer bonding layer; 10. Inner bonding layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] According to an embodiment of the utility model, a glass fiber reinforced plastic casing connection device is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, according to an embodiment of the utility model, a glass fiber reinforced plastic casing connection device comprises a left glass fiber reinforced plastic pipe 1, a right glass fiber reinforced plastic pipe 2 and a butt sleeve 3, the butt joint of the left glass fiber reinforced plastic pipe 1 and the right glass fiber reinforced plastic pipe 2 is sleeved with a butt sleeve 3, and a butt seal ring 4 is bonded to the middle position of the inner side of the butt sleeve 3, and both sides of the butt seal ring 4 are integrally injection-molded with extension rings 8, and the extension rings 8 on both sides of the butt seal ring 4 extend to the inner side of the left glass fiber reinforced plastic pipe 1 and the right glass fiber reinforced plastic pipe 2 respectively, and a group of sealing rubber rings 5 ​​are respectively arranged on both sides of the inside of the butt sleeve 3, The two sets of sealing rubber rings 5 ​​are in contact with the outer walls of the ports of the left glass fiber reinforced plastic pipe 1 and the right glass fiber reinforced plastic pipe 2 respectively, and each sealing rubber ring 5 is internally installed with a steel ring 6, the outer ring of the sealing rubber ring 5 is coated with an outer bonding layer 9, and the inner ring of the sealing rubber ring 5 is coated with an inner bonding layer 10. The docking scheme of the device can also be used for the sleeve installation of two glass fiber reinforced plastic pipes with different inner diameters. The specific implementation method is: a plurality of sealing rubber rings 5 ​​are equidistantly arranged between two glass fiber reinforced plastic pipes with different inner diameters, and the material of the sealing rubber ring 5 is plastic or plastic, so that it has a bonding effect after being heated and melted;

[0023] In one embodiment, a bell mouth 7 is provided at the inner opening of the extension ring 8, and the outer ring of the extension ring 8 is against the inner wall of the left FRP pipe 1 or the right FRP pipe 2. By setting the bell mouth 7, the resistance and interference of the thickness of the extension ring 8 on the fluid passing through the FRP pipe can be reduced, which is highly practical.

[0024] In one embodiment, the outer adhesive layer 9 and the inner adhesive layer 10 are both made of EVA hot melt adhesive, and the thickness of the outer adhesive layer 9 and the inner adhesive layer 10 are both 1-3 mm. EVA hot melt adhesive is a solvent-free, moisture-free, 100% solid fusible polymer. It is solid at room temperature and becomes a flowable liquid adhesive with a certain viscosity when heated and melted to a certain degree, which meets the heating and melting bonding requirements of the device and ensures the bonding effect.

[0025] In one embodiment, two annular grooves are formed at the edges of both sides of the butt sealing ring 4, and the two annular grooves are respectively abutted against the end faces of the left FRP pipe 1 and the right FRP pipe 2 facing each other. By setting the annular grooves, the tightness of the connection between the butt sealing ring 4 and the left FRP pipe 1 and the right FRP pipe 2 is maintained.

[0026] In one embodiment, an annular gap is formed between the docking sleeve 3 and the left FRP pipe 1 or the right FRP pipe 2, and the thickness of the sealing rubber ring 5 is adapted to the size of the annular gap. By setting the annular gap, space is provided for the installation of the sealing rubber ring 5.

[0027] In one embodiment, the inner diameter of the butt sleeve 3 is larger than the diameter of the left FRP pipe 1 or the right FRP pipe 2 , and the diameters of the left FRP pipe 1 and the right FRP pipe 2 are the same.

[0028] Working principle:

[0029] When in use, the left FRP pipe 1 and the right FRP pipe 2 are moved toward each other, and the left FRP pipe 1 and the right FRP pipe 2 are respectively inserted into the docking sleeve 3, so that the extension rings 8 on both sides of the docking sealing ring 4 are respectively inserted into the inner walls of the left FRP pipe 1 and the right FRP pipe 2. Since a number of sealing rubber rings 5 ​​of the built-in steel ring 6 are distributed at the gap where the docking sleeve 3 connects the left FRP pipe 1 and the right FRP pipe 2, the installation position of the sealing rubber ring 5 is aligned through the medium and high frequency heating coils, so that the steel ring 6 is heated to quickly melt the sealing rubber ring 5 and the outer bonding layer 9 and the inner bonding layer 10 coated on both sides, so that the outer bonding layer 9 and the inner bonding layer 10 of the sealing rubber ring 5 are melted to fill the gap between the left FRP pipe 1 and the right FRP pipe 2 and the docking sleeve 3, so that the left FRP pipe 1 and the right FRP pipe 2 are firmly docked, and it is suitable for the installation of FRP pipes in harsh maintenance environments.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass fiber reinforced plastic casing connection device, comprising a left glass fiber reinforced plastic pipe (1), a right glass fiber reinforced plastic pipe (2) and a butt sleeve (3), characterized in that: A butt joint sleeve (3) is sleeved and installed at the butt joint of the left glass fiber reinforced plastic pipe (1) and the right glass fiber reinforced plastic pipe (2), and a butt joint sealing ring (4) is bonded to the middle position of the inner side of the butt joint sleeve (3). Both sides of the butt joint sealing ring (4) are integrally injection-molded with extension rings (8), and the extension rings (8) on both sides of the butt joint sealing ring (4) extend to the inner side of the left glass fiber reinforced plastic pipe (1) and the right glass fiber reinforced plastic pipe (2), respectively. A group of sealing rubber rings (5) are respectively arranged on both sides of the inside of the butt joint sleeve (3), and the two groups of sealing rubber rings (5) are respectively in contact with the outer walls of the ports of the left glass fiber reinforced plastic pipe (1) and the right glass fiber reinforced plastic pipe (2), and each sealing rubber ring (5) is internally installed with a steel ring (6), the outer ring of the sealing rubber ring (5) is coated with an outer bonding layer (9), and the inner ring of the sealing rubber ring (5) is coated with an inner bonding layer (10).

2. A fiberglass casing connection device according to claim 1, characterized in that: A bell mouth (7) is provided at the inner opening of the extension ring (8), and the outer ring of the extension ring (8) abuts against the inner wall of the left glass fiber reinforced plastic pipe (1) or the right glass fiber reinforced plastic pipe (2).

3. A fiberglass casing connection device according to claim 1, characterized in that: The outer adhesive layer (9) and the inner adhesive layer (10) are both made of EVA hot melt adhesive, and the thickness of the outer adhesive layer (9) and the inner adhesive layer (10) are both 1-3 mm.

4. A fiberglass casing connection device according to claim 1, characterized in that: Two annular grooves are formed at the edges of both sides of the butt seal ring (4), and the two annular grooves are respectively abutted against the end faces of the left glass fiber reinforced plastic pipe (1) and the right glass fiber reinforced plastic pipe (2) at the opposite ends.

5. A fiberglass casing connection device according to claim 1, characterized in that: An annular gap is formed between the butt joint sleeve (3) and the left glass fiber reinforced plastic pipe (1) or the right glass fiber reinforced plastic pipe (2), and the thickness of the sealing rubber ring (5) is adapted to the size of the annular gap.

6. A fiberglass casing connection device according to claim 1, characterized in that: The inner diameter of the butt-jointed sleeve (3) is larger than the diameter of the left glass fiber reinforced plastic pipe (1) or the right glass fiber reinforced plastic pipe (2), and the diameters of the left glass fiber reinforced plastic pipe (1) and the right glass fiber reinforced plastic pipe (2) are the same.

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