Connecting structure of PCCP (prestressed concrete cylinder pipe)

Abstract

The utility model discloses a PCCP (prestressed concrete cylinder pipe) connecting structure which comprises pipe bodies, the two ends of each pipe body are respectively provided with an inserting part and a socket part, the inserting parts and the socket parts on the two pipe bodies which correspond to each other end to end are inserted and correspond to each other, sealing rings are arranged on the outer sides of the inserting parts, and sealing rings are arranged on the outer sides of the socket parts. Fixing parts and pressing parts corresponding to the fixing parts are arranged at the two ends of each pipe body respectively, the number of the pressing parts is multiple, and the pressing parts are detachably connected with the fixing parts on the adjacent pipe bodies. The pipeline connecting structure has the beneficial effects that the fixing pieces and the pressing pieces at the two ends of the pipe body are combined, the multiple pressing pieces enable two sections of pipelines to be stably connected in a detachable connection mode, pressure can be gradually applied in the later use process, and the tightness and long-term sealing of pipeline connection are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection, specifically to a connection structure for PCCP pipe. Background Technology

[0002] PCCP pipes are commonly used in water conservancy projects, municipal water supply and drainage, and industrial water transmission. The reliability of their connection structure directly affects the sealing performance, pressure bearing capacity, and service life of the pipeline system. The structure typically consists of a steel cylinder, concrete, and prestressed steel reinforcement. Connections are usually made through plug-in joints.

[0003] Traditional PCCP pipe connections are mostly plug-in or socket-type, typically using rubber sealing rings to ensure the seal at the joints and prevent water leakage. However, because a single sealing ring is used for sealing, fluctuations can easily occur during water flow in the pipeline, causing the sealing ring to deform due to uneven stress, leading to leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a connection structure for PCCP pipe in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A connection structure for a PCCP pipe includes a pipe body, with a plug and a socket at both ends of the pipe body. The plug and socket on two pipe bodies that are corresponding to each other are plugged in. A sealing ring is provided on the outside of the plug. Fixing members and clamping members corresponding to the fixing members are provided at both ends of the pipe body. There are multiple clamping members, which are detachably connected to the fixing members on adjacent pipe bodies.

[0007] Furthermore, the fastener has a convex portion on its surface away from the tube body, and the clamping member includes a zigzag rod rotatably connected to the tube body, with a clamping bolt at the movable end of the zigzag rod corresponding to the clamping of the convex portion.

[0008] Furthermore, the fastener is in the form of an arc segment or an annular shape, and the fastener has a through-hole that communicates with the tube body.

[0009] Furthermore, the convex surface facing the clamping bolt is conical, with the small end of the conical surface extending toward the axis of the pipe body, and the inner end of the clamping bolt is rotatably connected to a wedge-shaped block corresponding to the conical surface of the convex surface.

[0010] Furthermore, the convex portion and the forming hole are integrally formed with the fixing component.

[0011] Furthermore, the number of clamping components is not less than three, and they are distributed circumferentially with the axis of the tube body as the reference.

[0012] Furthermore, it also includes a connecting ring disposed on the outer wall of the tube body, the connecting ring being disposed away from the fixing member, the surface of the connecting ring having a through hole communicating with the tube body, and all the zigzag rods being rotatably connected to the connecting ring.

[0013] Furthermore, both the fastener and the connecting ring are formed on the outer wall of the tube body.

[0014] Furthermore, the movable end of the insertion part is provided with an inclined surface to facilitate insertion, and there are multiple sealing rings, which are evenly distributed along the axial direction of the insertion part.

[0015] The beneficial effects are:

[0016] The fixing and clamping parts at both ends of the pipe body are combined. Multiple clamping parts are connected in a detachable manner to ensure that the two pipe sections can be firmly connected. In later use, pressure can be gradually applied to ensure the tightness and long-term sealing of the pipe connection.

[0017] This structure features high-efficiency sealing performance and maintainability, can adapt to different environments and pressure conditions, and is easy to disassemble and maintain, ensuring the long-term stability and reliability of the pipeline system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] Figure 1 This is a cross-sectional view of the internal structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the fastener in this utility model;

[0021] Figure 3 This is a structural schematic diagram of the fastener in another embodiment of the present invention.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. Pipe body; 101. Insertion part; 102. Sealing ring; 2. Socket part; 3. Clamping part; 301. Folding rod; 302. Clamping bolt; 303. Connecting ring; 4. Fixing part; 401. Forming hole; 402. Convex part. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] First embodiment:

[0026] See Figures 1-3 As shown, this utility model provides a connection structure for a PCCP pipe, including a pipe body 1. The two ends of the pipe body 1 are respectively provided with a plug part 101 and a socket part 2. The plug parts 101 and socket parts 2 on the two pipe bodies 1 with corresponding ends are plugged into each other. A sealing ring 102 is provided on the outside of the plug part 101 to effectively prevent leakage.

[0027] Each end of the pipe body 1 is provided with a fixing member 4 and a corresponding clamping member 3. There are multiple clamping members 3, and they are detachably connected to the fixing members 4 on the adjacent pipe body 1. In the traditional PCCP pipe connection, the insertion part 101 and the socket part 2 at both ends of the two pipe bodies 1 correspond to each other. The insertion part 101 and the socket part 2 are inserted and fitted together, and a sealing ring 102 is installed on the outside of the insertion part 101 to ensure the sealing of the connection and realize the connection of the two pipe bodies 1. Unlike the above, each end of the pipe body 1 is provided with a fixing member 4 and a corresponding clamping member 3. There can be multiple clamping members 3. Both the fixing member 4 and the clamping member 3 are located on the outside of the pipe body 1. After the two sections of the pipe body 1 are inserted and connected, the clamping member 3 is connected and reinforced with the fixing member 4 on the adjacent pipe body 1. This can improve the stability and sealing of the connection. In subsequent maintenance work, the clamping member 3 and the fixing member 4 can be disassembled, which can also facilitate disassembly and maintenance, enhancing the overall flexibility and durability of the pipeline.

[0028] Furthermore, the movable end of the plug part 101 is provided with an inclined surface to facilitate insertion, and there are multiple sealing rings 102, which are evenly distributed along the axial direction of the plug part 101, so as to facilitate the insertion of the plug part 101 into the socket part 2, so as to facilitate the connection of the two pipe sections.

[0029] The second embodiment differs from the first embodiment in that:

[0030] The surface of the fixing member 4 away from the pipe body 1 has a convex part 402. The clamping member 3 includes a zigzag rod 301 rotatably connected to the pipe body 1. The zigzag rod 301 is at a right angle, with one end corresponding to the axis of the pipe body 1. A clamping bolt 302 is provided at the zigzag end of the zigzag rod 301, which clamps and engages with the convex part 402. When the clamping member 3 is clamped and connected to the fixing member 4, rotating the zigzag rod 301 causes the clamping bolt 302 to align with the convex part 402 on the fixing member 4. Tightening the clamping bolt 302 pushes the convex part 402 toward the clamping member 3, making the two pipe sections more tightly connected. By using multiple clamping members 3 to clamp the convex part 402, the two pipe body sections 1 can be brought closer together evenly, ensuring a tight connection between the two ends of the pipe body 1 and improving sealing and reliability. At the same time, the adjustable design of the clamping member and the fixing member makes this connection structure highly adaptable to different working conditions, facilitating long-term use and maintenance.

[0031] The fastener 4 is an arc-shaped segment or annular, and a forming hole 401 communicating with the pipe body 1 is passed through the fastener 4. The forming hole 401 facilitates the penetration of cement during the forming of the pipe body 1, so that 4 and 1 can be tightly connected to form a whole.

[0032] The surface of the convex part 402 facing the clamping bolt 302 is conical, with the small end of the conical surface extending toward the axis of the pipe body 1. The inner end of the clamping bolt 302 is rotatably connected to a wedge block corresponding to the conical surface of the convex part 402. The wedge block faces the convex part 402 and matches it, thus ensuring the clamping effect of the wedge block on the convex part.

[0033] The convex part 402 and the forming hole 401 are integrally formed with the fastener 4.

[0034] The third embodiment differs from the first embodiment in that:

[0035] The number of clamping components 3 is no less than three, and these clamping components are evenly distributed around the circumference with the axis of the pipe body 1 as the reference. This design ensures a uniform distribution of clamping force, making the connection between the two sections of the pipe body 1 more stable and sealed. Each clamping component 3 is rotatably connected to the connecting ring 303 via a folded rod 301. The connecting ring 303 is set on the outer wall of the pipe body 1. On one pipe body 1, the clamping component 3 and the fixing component 4 are respectively close to both ends of the pipe body 1. The surface of the connecting ring 303 has a through hole communicating with the pipe body 1. In this way, when the pipe body 1 is cemented, some cement can enter into the through hole, which not only helps to improve the bonding strength between the connecting ring 303 and the pipe body 1, but also enhances the stability and sealing of the entire connection structure. After the cement enters the through hole, it helps to ensure that the fixing component 4 and the clamping component 3 are more tightly fixed to the pipe body 1 during construction, thus forming a more robust and stable integrated structure after the pipeline is installed.

[0036] A side lug is provided on the outer wall of the connecting ring 303. A folding rod 301 is rotatably connected to the side lug via a rotating shaft. This allows the movable end of the folding rod 301 to rotate toward the opening of the nearby pipe body 1. The clamping member 3 can apply pressure evenly toward the other pipe body 1, making the two pipe bodies 1 more tightly connected and improving the sealing and reliability of the connection.

[0037] In a preferred embodiment, the end of the sealing ring 102 near the fixing member 4 has a right-angled triangle cross-section, with the inclined surface of the triangle facing outwards. Specifically, the inclined surface of the sealing ring 102 is positioned away from the insertion portion 101 of the pipe body 1. That is, when two pipe bodies 1 are connected, the inclined surface faces the other pipe body 1. This design aims to ensure that when two pipe bodies 1 are connected, the inclined surface can tightly engage with the other pipe body 1, forming a more efficient sealing effect.

[0038] As the clamping member 3 gradually applies pressure to the fixing member 4, the sealing ring 102 is compressed. The bevel effectively compresses and adapts to the small gap between the two pipes, providing a stronger seal and preventing leakage. As the clamping process continues, the sealing ring 102 forms an increasingly stronger seal between the pipe body 1 and the other pipe body 1. The shape and material properties of the sealing ring 102 ensure that it can effectively expand and fill the gap at the pipe connection under pressure, ultimately providing a highly efficient sealing effect.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A connection structure for a PCCP pipe, comprising a pipe body (1), wherein the two ends of the pipe body (1) are respectively provided with a plug portion (101) and a socket portion (2), the plug portion (101) and the socket portion (2) on the two end-to-end corresponding pipe bodies (1) are plugged into each other, and a sealing ring (102) is provided on the outside of the plug portion (101), characterized in that: The pipe body (1) is provided with a fixing member (4) and a clamping member (3) corresponding to the fixing member (4) at both ends. There are multiple clamping members (3), and they are detachably connected to the fixing members (4) on the adjacent pipe body (1).

2. The connection structure of a PCCP pipe according to claim 1, characterized in that: The fastener (4) has a convex part (402) on the surface away from the tube body (1), and the clamping member (3) includes a folded rod (301) rotatably connected to the tube body (1). The movable end of the folded rod (301) is provided with a clamping bolt (302) corresponding to the clamping of the convex part (402).

3. The connection structure of a PCCP pipe according to claim 2, characterized in that: The fastener (4) is an arc-shaped segment or annular, and the fastener (4) has a forming hole (401) that communicates with the tube body (1).

4. The connection structure of a PCCP pipe according to claim 3, characterized in that: The surface of the convex part (402) facing the clamping bolt (302) is conical, and the small end of the conical surface extends toward the axis of the pipe body (1). The inner end of the clamping bolt (302) is rotatably connected to a wedge-shaped block corresponding to the conical surface of the convex part (402).

5. The connection structure of a PCCP pipe according to claim 4, characterized in that: The convex part (402) and the forming hole (401) are integrally formed with the fixing member (4).

6. A connection structure for a PCCP pipe according to claim 2 or 4, characterized in that: The number of clamping components (3) is not less than three, and they are distributed circumferentially with the axis of the tube body (1) as the reference.

7. The connection structure of a PCCP pipe according to claim 6, characterized in that: It also includes a connecting ring (303) disposed on the outer wall of the tube body (1). The connecting ring (303) is disposed away from the fixing member (4). The surface of the connecting ring (303) is provided with a through hole communicating with the tube body (1). All the folding rods (301) are rotatably connected to the connecting ring (303).

8. The connection structure of a PCCP pipe according to claim 7, characterized in that: The fastener (4) and the connecting ring (303) are both formed on the outer wall of the tube body (1).

9. The connection structure of a PCCP pipe according to claim 1, characterized in that: The movable end of the plug-in part (101) is provided with an inclined surface to facilitate insertion, and there are multiple sealing rings (102) that are evenly distributed along the axial direction of the plug-in part (101).

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