FRP pipe connecting structure

Abstract

The utility model discloses a fiber reinforced plastic (FRP) pipe connecting structure, and relates to the technical field of composite material connection, the FRP pipe connecting structure comprises a pipe body I and a pipe body II, the pipe body I and the pipe body II are provided with a connecting structure, the connecting structure comprises a connecting ring I, a connecting ring II and a sleeve, and the connecting ring I and the connecting ring II are both provided with fastening plates. The FRP pipeline connecting device has the advantages that the distance between the two sets of connecting rings can be flexibly adjusted through telescopic movement of the multiple telescopic rods in the sleeve, the FRP pipeline connecting device is suitable for FRP pipelines with different diameters, the application range is expanded, the connecting rings are arranged in the sleeve, the connecting rings are arranged in the sleeve, the connecting rings are arranged in the sleeve, the connecting rings are arranged in the sleeve, and the connecting rings are arranged in the sleeve. The first hydraulic rod and the second hydraulic rod drive the clamping ring to be connected with the clamping groove in a clamped mode, the connecting ring structure fastened through the bolt is combined, rapid positioning and high-strength connection of the pipeline are achieved, and meanwhile the sealing performance of the connecting part is improved through the sealing gasket.

Description

Technical Field

[0001] This utility model relates to the field of composite material connection technology, specifically to an FRP pipe connection structure. Background Technology

[0002] Fiber reinforced composite materials (FRP) are composite materials formed by winding, molding or pultrusion of reinforcing fiber materials, such as glass fiber, carbon fiber, aramid fiber and matrix material. Due to their advantages such as light weight, high strength and corrosion resistance, composite materials are gradually being widely used in the engineering field.

[0003] The applicant discovered through a search that a Chinese patent discloses "An FRP Pipe Connection Structure" with publication number "CN211059137 U". This patent mainly increases the clamping force by increasing the contact area between the expansion wedge and the cylindrical part and the FRP pipe, thereby improving the load-bearing capacity of the FRP pipe. However, this structure has the defect of not being able to adapt to pipes of different diameters, which limits its scope of application. Therefore, we propose an FRP pipe connection structure. Utility Model Content

[0004] The purpose of this invention is to provide an FRP pipe connection structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an FRP pipe connection structure, comprising a pipe body one and a pipe body two, wherein a connection structure is provided on the pipe body one and the pipe body two, the connection structure comprising a connecting ring one, a connecting ring two and a sleeve, wherein a fastening plate is provided on the connecting ring one and the connecting ring two, the connecting ring one and the connecting ring two are configured in two sets, and an internal rod is provided between the two sets of connecting ring one and the connecting ring two, wherein a telescopic rod is connected to the bottom surface of the internal rod, and both the internal rod and the telescopic rod are located inside the sleeve, wherein a hydraulic rod one is provided inside one set of connecting ring one and the connecting ring two, wherein two hydraulic rods one are configured, and retaining rings are provided on the two hydraulic rods one, and hydraulic rods two are provided on the other set of connecting ring one and the connecting ring two, wherein retaining grooves are connected on the two hydraulic rods two.

[0006] As a further embodiment of this utility model: the fastening plate has holes, and bolts are installed inside the holes. The first connecting ring and the second connecting ring are fastened to the fastening plate by bolts.

[0007] As a further embodiment of this utility model: the number of fastening plates and holes is set to eight, and the fastening plates and holes are respectively arranged on connecting ring one and connecting ring two.

[0008] As a further embodiment of this utility model: the number of connecting ring one and connecting ring two is set to four, the number of the built-in rod, telescopic rod and sleeve is set to four, and the telescopic rod extends and retracts inside the sleeve.

[0009] As a further embodiment of this utility model: the card slot and the card ring are engaged, and a sealing gasket is provided inside the card slot.

[0010] As a further embodiment of this utility model: the number of sealing gaskets is set to two, and the diameters of tube body one and tube body two are the same.

[0011] As a further embodiment of this utility model: a fixing ring is provided on the built-in rod, and the built-in rod and the telescopic rod are engaged inside the sleeve by the fixing ring.

[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] 1. This utility model can flexibly adjust the spacing between two sets of connecting rings by the telescopic movement of multiple telescopic rods in the sleeve, adapting to FRP pipes of different diameters and expanding the application range. The hydraulic rod one and hydraulic rod two drive the retaining ring to engage with the retaining groove. Combined with the bolt-tightened connecting ring structure, it realizes the rapid positioning and high-strength connection of the pipe. At the same time, the sealing gasket improves the sealing performance of the connection part.

[0014] 2. This utility model ensures uniform stress on the pipeline during the connection process by using multiple sets of telescopic rods distributed in a ring and the interlocking action of hydraulic rod one and hydraulic rod two, thus avoiding local stress concentration and improving the stability and durability of the connection structure.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a first perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is a second perspective view of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the hydraulic rod 2 and the slot in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the hydraulic rod and the retaining ring in an embodiment of this utility model;

[0020] Figure 5This is a schematic diagram of the connection structure of the built-in rod, telescopic rod, and sleeve in an embodiment of this utility model.

[0021] In the diagram: 1. Pipe body one; 2. Pipe body two; 3. Connecting structure; 31. Connecting ring one; 32. Connecting ring two; 33. Fastening plate; 34. Internal rod; 35. Telescopic rod; 36. Sleeve; 37. Hydraulic rod one; 38. Snap ring; 39. Hydraulic rod two; 40. Snap groove. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0023] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Fiber-reinforced polymer (FRP) composites, with their excellent properties such as lightweight, high strength, and corrosion resistance, are widely used in piping systems in engineering fields such as chemical, construction, and energy. The reliability of FRP pipe connections directly affects the stability and safety of the system. Common connection methods in existing technologies include flange connections, socket connections, and mechanical clamp connections. Traditional connection structures are usually designed for pipes of fixed diameter and cannot flexibly adjust the connection spacing according to actual working conditions, resulting in poor adaptability to different pipe diameters. In engineering applications, when connecting FRP pipes of different specifications or when the pipe undergoes slight deformation due to changes in ambient temperature, fixed connection methods may encounter problems such as installation difficulties, decreased sealing performance, or even structural failure, limiting the application expansion of FRP pipes in complex scenarios. Therefore, please refer to the appendix. Figure 1 - Appendix Figure 5 This utility model discloses an FRP pipe connection structure, including a pipe body 1 and a pipe body 2. A connection structure 3 is provided on both pipe bodies 1 and 2. The connection structure 3 includes a connecting ring 31, a connecting ring 32, and a sleeve 36. Both the connecting ring 31 and the connecting ring 32 are provided with fastening plates 33. The connecting rings 31 and 32 are arranged in two sets, and an internal rod 34 is provided between the two sets of connecting rings 31 and 32. A telescopic rod 35 is connected to the bottom surface of the internal rod 34. Both rod 34 and telescopic rod 35 are located inside sleeve 36. One set of connecting ring 31 and connecting ring 32 has a hydraulic rod 37 inside. There are two hydraulic rods 37, and each hydraulic rod 37 has a retaining ring 38. Another set of connecting rings 31 and connecting ring 32 has a hydraulic rod 39. The two hydraulic rods 39 are connected by a retaining groove 40, which realizes the quick positioning and high-strength connection of tube body 1 and tube body 2. At the same time, the sealing gasket improves the sealing of the connection.

[0025] In Example 1, the fastening plate 33 has holes, and bolts are installed inside the holes. Connecting ring 1 31 and connecting ring 2 32 are fastened to the fastening plate 33 by bolts. The number of connecting ring 1 31 and connecting ring 2 32 is set to four. The number of built-in rod 34, telescopic rod 35 and sleeve 36 is also set to four. The telescopic rod 35 extends and retracts inside the sleeve 36, thereby adjusting the distance between the two pairs of connecting ring 1 31 and connecting ring 2 32.

[0026] Specifically, bolt holes are made in the fastening plate 33, and bolts are used to detachably fasten the connecting ring 31 and the connecting ring 32. The telescopic rod 35 is set to extend and retract, so as to facilitate the adjustment of the distance between the connecting ring 31 and the connecting ring 32.

[0027] In embodiment 2, the slot 40 and the retaining ring 38 are engaged, and a sealing gasket is provided inside the slot 40. The number of fastening plates 33 and holes is set to eight, and the fastening plates 33 and holes are correspondingly set on connecting ring 1 31 and connecting ring 2 32. The number of sealing gaskets is set to two. The diameters of tube 1 and tube 2 are the same. A fixing ring is provided on the built-in rod 34. The built-in rod 34 and the telescopic rod 35 are engaged inside the sleeve 36 through the fixing ring.

[0028] Specifically, the distance between the two sets of connecting rings can be flexibly adjusted by the telescopic movement of multiple telescopic rods 35 within the sleeve 36, adapting to FRP pipes of different diameters and expanding the application range.

[0029] Specifically, the hydraulic rod 37 and hydraulic rod 39 drive the retaining ring 38 to engage with the retaining groove 40. Combined with the bolt-tightened connecting ring structure, this achieves rapid positioning and high-strength connection of the pipeline, while the sealing gasket improves the sealing performance of the connection.

[0030] Specifically, through the interlocking and synergistic effect of multiple sets of telescopic rods 35, hydraulic rod one 37 and hydraulic rod two 39 distributed in a ring, the pipeline is subjected to uniform stress during the connection process, avoiding local stress concentration and improving the stability and durability of the connection structure 3.

[0031] Working principle: First, two sets of connecting rings 31 and 32 are respectively fitted onto the outside of pipe body 1 and pipe body 2. The two sets of connecting rings 31 and 32 are fixed in the designated position of the pipeline by the bolts on the fastening plate 33. When it is necessary to adjust the distance between the two sets of connecting rings 31 and 32, the extension length of the telescopic rod 35 in the sleeve 36 is manually adjusted according to the difference in diameter between pipe body 1 and pipe body 2, so that the distance between the two sets of connecting rings 31 and 32 is adapted to the pipeline connection requirements. When it is necessary to clamp and fix, the hydraulic rod 37 is activated to push the retaining ring 38, and the hydraulic rod 39 pushes the retaining groove 40 closer to each other until the retaining ring 38 is embedded in the retaining groove 40 to complete the clamping. The sealing gasket is deformed by pressure to achieve a seal.

[0032] When disassembly is required, reverse the operation of hydraulic rod 37 and hydraulic rod 39 to separate the retaining ring 38 from the retaining groove 40. Loosen the bolts to remove the connecting ring and complete the pipeline separation. At this point, the entire process is complete.

[0033] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0036] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. An FRP pipe connection structure, comprising a pipe body one (1) and a pipe body two (2), characterized in that: The first tube (1) and the second tube (2) are provided with a connecting structure (3), which includes a first connecting ring (31), a second connecting ring (32) and a sleeve (36). Both the first connecting ring (31) and the second connecting ring (32) are provided with fastening plates (33). The first connecting ring (31) and the second connecting ring (32) are set in two sets, and an internal rod (34) is provided between the two sets of the first connecting ring (31) and the second connecting ring (32). The bottom surface of the internal rod (34) is connected to a telescopic extension device. The rod (35), the built-in rod (34) and the telescopic rod (35) are both set inside the sleeve (36). One set of the connecting ring one (31) and the connecting ring two (32) is provided with a hydraulic rod one (37). There are two hydraulic rods one (37). The two hydraulic rods one (37) are provided with retaining rings (38). The other set of the connecting ring one (31) and the connecting ring two (32) is provided with a hydraulic rod two (39). The two hydraulic rod two (39) are connected with a retaining groove (40).

2. The FRP pipe connection structure according to claim 1, characterized in that: The fastening plate (33) has holes, and bolts are installed inside the holes. The connecting ring one (31) and the connecting ring two (32) are fastened together by bolts and the fastening plate (33).

3. The FRP pipe connection structure according to claim 2, characterized in that: The number of fastening plates (33) and holes is set to eight, and the fastening plates (33) and holes are respectively set on connecting ring one (31) and connecting ring two (32).

4. The FRP pipe connection structure according to claim 3, characterized in that: The number of connecting ring one (31) and connecting ring two (32) is set to four, and the number of the built-in rod (34), telescopic rod (35) and sleeve (36) is set to four. The telescopic rod (35) extends and retracts inside the sleeve (36).

5. The FRP pipe connection structure according to claim 1, characterized in that: The slot (40) and the ring (38) are engaged, and a sealing gasket is provided inside the slot (40).

6. The FRP pipe connection structure according to claim 5, characterized in that: The number of sealing gaskets is set to two, and the diameters of tube body one (1) and tube body two (2) are the same.

7. The FRP pipe connection structure according to claim 4, characterized in that: A fixing ring is provided on the built-in rod (34), and the built-in rod (34) and the telescopic rod (35) are engaged inside the sleeve (36) by the fixing ring.

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