Anti-leakage structure of embedded pipeline

Abstract

The utility model discloses a pre-buried pipeline anti-leakage structure which comprises a first pipe body and a second pipe body which are coaxially arranged, the opposite ends of the first pipe body and the second pipe body are provided with expansion ends, the expansion ends are provided with a flange plate and an annular plate which are the same in outer diameter size, and an annular clamping cavity is formed between the flange plate and the annular plate. Hoops are buckled outside the opposite ends of the first pipe body and the second pipe body, sealing rings are arranged in the hoops, the peripheries of the flange plate and the annular plate are sleeved with the sealing rings, and the sealing rings are pressed on the peripheries of the flange plate and the annular plate under the action of the hoops; a first sealing face is arranged on the periphery of the flange plate, a second sealing face is arranged on the periphery of the annular plate, and the longitudinal section of the first sealing face and the longitudinal section of the second sealing face are each of a sawtooth-shaped structure. According to the anti-leakage structure of the embedded pipeline, through cooperation of multiple sealing structures, it is guaranteed that the adjacent pipe bodies are connected and sealed permanently and effectively, and the fluid leakage phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to a pre-buried pipeline anti-leakage structure and belongs to the technical field of pipeline anti-leakage. Background Art

[0002] Large-diameter water pipelines are usually buried deep underground for drainage, sewage disposal, etc. The connection of large-diameter water pipelines is welded or flanged.

[0003] Welding connection has good sealing effect, but welding is done after aligning the steel pipe mouth with lifting equipment. Due to the deviation of the pipe mouth diameter and the deformation of the pipe during production and transportation, the steel pipe has a large amount of misalignment when it is aligned, and the welding process is inconvenient. Therefore, the welding connection method generally has the problem of troublesome pipe docking and removal. The flange connection is fast to construct and easy to assemble and disassemble, but the flange joint is prone to water seepage and poor sealing during long-term use, resulting in fluid leakage.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] The utility model aims at the deficiencies in the background technology and provides a pre-buried pipeline anti-leakage structure, which ensures that a lasting and effective connection seal is maintained between adjacent pipe bodies through the cooperation of multiple sealing structures to avoid fluid leakage.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A pre-buried pipeline anti-leakage structure comprises a first pipe body and a second pipe body arranged coaxially, the first pipe body and the second pipe body are both provided with enlarged ends at the facing ends, flanges and ring plates with the same outer diameters are provided on the enlarged ends, and an annular clamping cavity is provided between the flange and the ring plate;

[0008] The first tube body and the second tube body are buckled with a clamp on the outside of the facing ends, and a sealing ring is arranged inside the clamp. The sealing ring is sleeved on the periphery of the flange and the ring plate, and the sealing ring is pressed against the periphery of the flange and the ring plate under the action of the clamp;

[0009] A first sealing surface is disposed on the periphery of the flange, and a second sealing surface is disposed on the periphery of the ring plate. The longitudinal sections of the first sealing surface and the second sealing surface are both sawtooth structures.

[0010] Furthermore, the flanges of the first tube body and the second tube body are fixedly connected by passing bolts, and the width of the annular clamping cavity is greater than the length of the bolts.

[0011] Furthermore, the enlarged end is integrally formed with the first tube body or the second tube body.

[0012] Furthermore, the flange and the ring plate are fixedly connected to the expanded end by welding.

[0013] Furthermore, the flange is fixedly connected to the end of the expanded end.

[0014] Furthermore, a flange gasket is provided between the flange plates of the first tube body and the second tube body.

[0015] Furthermore, the clamp is a split structure.

[0016] Furthermore, the clamp comprises a front clamp split and a rear clamp split, the bottoms of the front clamp split and the rear clamp split are connected by a hinge, and the tops of the front clamp split and the rear clamp split are connected by a locking component.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] The flange gasket is pressed between the two flanges of adjacent pipe bodies, playing the role of the first seal; the clamp presses the internal sealing ring against the flange and the ring plate, and the first sealing surface on the periphery of the flange is pressed and bitten with the inner wall of the sealing ring, playing the role of the second seal; the second sealing surface on the periphery of the ring plate is pressed and bitten with the inner wall of the sealing ring, playing the role of the third seal. Through the cooperation of the triple sealing structure, it is ensured that the adjacent connection positions maintain a long-lasting and effective connection seal to avoid fluid leakage.

[0019] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural sectional view of the utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of the structure at M in the middle.

[0023] In the figure, 1-first tube body, 2-second tube body, 3-expanded end, 4-flange, 5-ring plate, 6-annular clamping cavity, 7-first sealing surface, 8-second sealing surface, 9-sealing ring, 10-clamp, 11-hinge, 12-locking component, 13-flange gasket. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0025] like Figure 1-Figure 3 As shown together, the utility model provides a pre-buried pipe anti-leakage structure, including a first tube body 1 and a second tube body 2 arranged coaxially, and the facing ends of the first tube body 1 and the second tube body 2 are both provided with an enlarged end 3, and the enlarged end 3 is integrally formed with the first tube body 1 or the second tube body 2.

[0026] The enlarged end 3 is provided with a flange 4 and a ring plate 5 with the same outer diameter. The flange 4 and the ring plate 5 are fixedly connected to the enlarged end 3 by welding. An annular clamping cavity 6 is provided between the flange 4 and the ring plate 5.

[0027] The flange 4 is fixedly connected to the end of the expanded end 3 .

[0028] A flange gasket 13 is provided between the flange plates 4 of the first tube body 1 and the second tube body 2. The flange gasket 13 is pressed tightly between the two flange plates 4 to play the function of a first sealing.

[0029] The flanges 4 of the first tube body 1 and the second tube body 2 are fixedly connected by passing bolts, and the width of the annular clamping cavity 6 is greater than the length of the bolts to facilitate the transverse passing of the bolts.

[0030] A clamp 10 is fastened on the outside of the facing ends of the first tube body 1 and the second tube body 2, and a sealing ring 9 is arranged inside the clamp 10. The sealing ring 9 is sleeved on the periphery of the flange 4 and the ring plate 5. The sealing ring 9 is pressed against the periphery of the flange 4 and the ring plate 5 by the action of the clamp 10.

[0031] The flange 4 is provided with a first sealing surface 7 on its periphery, and the ring plate 5 is provided with a second sealing surface 8 on its periphery. The longitudinal sections of the first sealing surface 7 and the second sealing surface 8 are both sawtooth structures so as to be embedded in the inner wall of the bite seal ring 9 to improve the sealing effect.

[0032] The first sealing surface 7 on the periphery of the flange 4 is pressed and engaged with the inner wall of the sealing ring 9 to perform the function of a second sealing.

[0033] The second sealing surface 8 on the outer periphery of the ring plate 5 is pressed and engaged with the inner wall surface of the sealing ring 9 to perform the function of the third sealing.

[0034] The clamp 10 is a split structure, including a front clamp split and a rear clamp split, the bottoms of the front clamp split and the rear clamp split are connected by a hinge 11, and the tops of the front clamp split and the rear clamp split are connected by a locking component 12. The clamp 10 can press the internal sealing ring 9 onto the flange 4 and the ring plate 5.

[0035] The specific working principle of this utility model:

[0036] The flange gasket 13 is pressed between the two flanges 4 of the first tube body 1 and the second tube body 2, and plays the function of the first sealing; the clamp 10 presses the internal sealing ring 9 onto the flange 4 and the ring plate 5, and the first sealing surface 7 on the periphery of the flange 4 is pressed and bitten with the inner wall surface of the sealing ring 9, and plays the function of the second sealing; the second sealing surface 8 on the periphery of the ring plate 5 is pressed and bitten with the inner wall surface of the sealing ring 9, and plays the function of the third sealing. Through the cooperation of the triple sealing structure, it is ensured that the connection position between the first tube body 1 and the second tube body 2 maintains a lasting and effective seal to avoid leakage.

[0037] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A pre-buried pipeline anti-leakage structure, characterized in that: The invention comprises a first tube body (1) and a second tube body (2) which are coaxially arranged, wherein the first tube body (1) and the second tube body (2) are provided with enlarged ends (3) at their facing ends, and the enlarged ends (3) are provided with flanges (4) and ring plates (5) having the same outer diameter, and an annular clamping cavity (6) is provided between the flanges (4) and the ring plates (5); A clamp (10) is buckled on the outside of the facing ends of the first tube body (1) and the second tube body (2), a sealing ring (9) is provided inside the clamp (10), the sealing ring (9) is sleeved on the periphery of the flange (4) and the ring plate (5), and the sealing ring (9) is pressed against the periphery of the flange (4) and the ring plate (5) under the action of the clamp (10); A first sealing surface (7) is provided on the periphery of the flange (4), and a second sealing surface (8) is provided on the periphery of the ring plate (5); longitudinal cross-sections of the first sealing surface (7) and the second sealing surface (8) are both sawtooth structures.

2. A pre-buried pipeline anti-leakage structure according to claim 1, characterized in that: The flanges (4) of the first tube body (1) and the second tube body (2) are fixedly connected by bolts, and the width of the annular clamping cavity (6) is greater than the length of the bolts.

3. A pre-buried pipeline anti-leakage structure according to claim 1, characterized in that: The enlarged end (3) and the first tube body (1) or the second tube body (2) are integrally formed.

4. A pre-buried pipeline anti-leakage structure according to claim 1, characterized in that: The flange (4) and the ring plate (5) are fixedly connected to the expanded end (3) by welding.

5. A pre-buried pipeline anti-leakage structure as claimed in claim 4, characterized in that: The flange (4) is fixedly connected to the end of the expanded end (3).

6. The pre-buried pipeline anti-leakage structure according to claim 1, characterized in that: A flange gasket (13) is provided between the flange plates (4) of the first tube body (1) and the second tube body (2).

7. The pre-buried pipeline anti-leakage structure according to claim 1, characterized in that: The clamp (10) is a split structure.

8. A pre-buried pipeline anti-leakage structure according to claim 7, characterized in that: The clamp (10) comprises a front clamp split and a rear clamp split, the bottoms of the front clamp split and the rear clamp split are connected via a hinge (11), and the tops of the front clamp split and the rear clamp split are connected via a locking component (12).

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