Waterproof pipe section

Abstract

The utility model relates to a waterproof type pipe jacking pipe joint, relate to pipe jacking pipe joint field, the one end of pipe joint body is provided with the connecting head end, the other end is provided with the connecting tail, the first recess is provided in the connecting head end, the sealing ring piece is installed in the first recess, at least two sealing recesses are arranged in the sealing ring piece, the inner ring end surface of connecting tail is installed with flexible sealing piece, the flexible sealing piece can be embedded into the sealing recess and forms the seal under the extrusion, the utility model discloses a pipe joint at the joint utilizes the sealing recess and the flexible sealing piece cooperation, realizes the adaptive filling under the jacking pressure and forms multistage sealing defense line, still can maintain the sealing effect when single point failure, effectively guarantee the stability and the sealing property when pipe joint connection, multistage sealing recess, flexible sealing piece dynamic deformation and the integrated design of diversion groove pressure relief, fundamentally solve the water leakage and durability problem of traditional pipe joint connection.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking sections, and in particular to a waterproof pipe jacking section. Background Technology

[0002] In cities, with various municipal pipelines running underground and more and more municipal buildings on the surface, traditional shield tunneling excavation can cause adverse consequences such as damage to road structures and the environment, while also causing considerable inconvenience to people's lives and work, and incurring high construction costs. To resolve the conflict between existing municipal facilities and construction, the pipe jacking tunnel method has emerged.

[0003] We found that traditional pipe jacking connections mainly rely on single rubber sealing rings or grouting seals. Traditional single rubber sealing rings are prone to local tearing due to uneven pressure, and once damaged, they fail as a whole. Grouting seals, on the other hand, rebound after the pipe section is installed (0.5-2mm), and the gap at the joint forms a water seepage channel, requiring secondary grouting to remedy the situation, which increases construction costs. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof jacking pipe section to solve the problems mentioned in the background art.

[0005] The technical problem solved by this utility model is achieved through the following technical solution:

[0006] A waterproof jacking pipe section includes a pipe section body, one end of which is provided with a connector end and the other end with a connector tail. The connector end is provided with a first groove, in which a sealing ring is embedded. The sealing ring is provided with at least two sealing grooves distributed therein. The inner ring end face of the connector tail is provided with a flexible seal, which can be embedded into the sealing groove to form a seal when compressed.

[0007] Preferably, a second groove is provided on the inner ring end face of the connecting tail, and the flexible seal includes a pressure-receiving part and an extension part. The pressure-receiving part is in close contact with the edge end face of the pipe section, and the extension part is embedded in the second groove.

[0008] Preferably, the connector end is provided with a flow guide groove on the side near the pipe section body.

[0009] Preferably, the sealing groove has a triangular cross-section.

[0010] Preferably, the inner annular surface of the extension portion is roughened.

[0011] Preferably, the outer edge of the connector end face is chamfered.

[0012] The advantages and positive effects of this utility model are:

[0013] This invention utilizes the synergistic effect of sealing grooves and flexible seals at the connection points of pipe sections to achieve self-adaptive filling and form a multi-level sealing defense line under jacking pressure. Even in the event of a single point failure, the sealing effect can still be maintained, effectively ensuring the stability and sealing performance of the pipe section connection. The integrated design of multi-level sealing grooves, dynamic deformation of flexible seals, and pressure relief of flow channels realizes a triple protection mechanism of "instant sealing - dynamic compensation - active pressure relief", fundamentally solving the problems of leakage and durability in traditional pipe section connections. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of a waterproof jacking pipe section according to the present invention;

[0016] Figure 2 This is a schematic diagram of the waterproof jacking pipe section of this utility model from another perspective;

[0017] Figure 3 This is a schematic diagram showing the structure of the connector end of a waterproof jacking pipe section according to this utility model.

[0018] Figure 4 This is a schematic diagram showing the structure of the connecting tail section in a waterproof jacking pipe section according to this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of a flexible sealing element in a waterproof jacking pipe section according to the present invention;

[0020] Figure 6 This is a partial cross-sectional schematic diagram of a sealing ring component in a waterproof jacking pipe section according to the present invention;

[0021] Figure 7 This is a schematic diagram of the connection of a waterproof jacking pipe section according to the present invention.

[0022] The markings in the attached drawings are described as follows: pipe section body 10; connector end 11; connector tail 12; first groove 13; guide groove 14; sealing ring 15; sealing groove 16; second groove 17; flexible seal 18; pressure-bearing part 19; extension part 20. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in an illustrative manner. Therefore, they only show the components related to the present invention.

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0025] The following is combined Figure 1-7 This utility model will be described in detail below. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of front, back, left, right, up, and down in the view are consistent. Figure 1 The directions shown are consistent with the front-facing, back-facing, left-right, up-down directions of the device.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of at least two elements or the interaction relationship of at least two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0028] Please see Figure 1-7This utility model provides an embodiment of a waterproof jacking pipe section, comprising a pipe section body 10. One end of the pipe section body 10 is provided with a connector end 11, and the other end is provided with a connector tail 12. During connection, the connector end 11 of one pipe section 10 is inserted into the connector tail 12 of another pipe section 10 to form a connection. However, jacking pipe sections are prone to leakage at the connection point. Therefore, a first groove 13 is provided in the connector end 11, and a sealing ring 15 is embedded in the first groove 13. At least two sealing grooves 16 are distributed in the sealing ring 15. If two sealing grooves 16 are selected, then these two... The sealing grooves 16 are symmetrically distributed about the center plane of the first groove 13. In this embodiment, four sealing grooves 16 are selected. The cross-section of the sealing grooves 16 is triangular or trapezoidal. A flexible seal 18 is installed on the inner ring end face of the connecting tail 12. When the two pipe sections are connected, the end of the connector 11 is inserted into the connecting tail 12 of the other pipe section 10, so that the end of the connector 11 is squeezed against the flexible seal 18. After being squeezed, the flexible seal 18 is embedded in the sealing groove 16 to form a seal, so that the connection between the two pipe sections can be effectively drained.

[0029] It is worth mentioning that, in this embodiment, a second groove 17 is provided on the inner ring end face of the connecting tail 12. The flexible seal 18 includes a pressure-bearing part 19 and an extension part 20. The pressure-bearing part 19 is close to the edge end face of the pipe section 10. The extension part 20 is embedded in the second groove 17. When the connecting head end 11 is inserted into the connecting tail 12 of another pipe section 10, the outer edge end face of the connecting head end 11 presses against the pressure-bearing part 19. The outer edge end face of the connecting head end 11 can be chamfered to make the pressure-bearing part 19 press more fully, causing the pressure-bearing part 19 to deform and shrink, thereby causing the extension part 20 to expand and deform, and then the extension part 20 is embedded in the sealing groove 16, achieving efficient waterproof sealing of the two pipe sections.

[0030] It should be noted that, in order to make the connection between the two pipe sections more stable, in this embodiment, the inner circumferential surface of the extension portion 20 is roughened, and the roughened surface contacts the groove wall of the sealing groove 16 to form a stable connection.

[0031] It should also be noted that a guide groove 14 is provided on the end 11 of the connector near the pipe section body 10. The guide groove 14 is located at the joint of the two pipe sections. After the jacking pipe is completed, once the thrust during installation is removed, a slight rebound will occur between the two connected pipe sections, causing the gap between the two pipe sections to increase. Once water passes through the joint, it will enter the guide groove 14 for diversion.

[0032] In practice, construction personnel inspect the connector end 11 and connector tail 12 of pipe section 10 to confirm that the sealing ring 15 is fully embedded in the first groove 13, and that the pressure-bearing part 19 and extension part 20 of the flexible seal 18 are not deformed in the second groove 17. The second groove 17 fixes the flexible seal 18 to prevent the extension part 20 from loosening during transportation and to ensure pre-assembly reliability. Using a guide device, the connector end 11 (with chamfer) of pipe section A is aligned with the connector tail 12 of pipe section B, and it is slowly pushed in to a depth of about 1 / 3. The chamfered design reduces insertion resistance, avoids local tearing of the flexible seal 18, and improves docking efficiency. When the head end 11 of pipe section A is fully pushed into the tail end 12 of pipe section B, the pressure-bearing part 19 of the flexible seal 18 is compressed, and the extension part 20 expands and embeds into the sealing groove 16. The sharp corner structure guides the material of the extension part 20 to fill in a specific direction, forming a wedge-shaped locking seal, which improves the water pressure resistance by 40%. The roughened inner annular surface of the extension part 20 increases the friction coefficient with the groove wall of the sealing groove 16 by 0.3, preventing seal failure caused by water pressure fluctuations.

[0033] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A waterproof jacking pipe section, comprising a pipe section body (10), characterized in that: One end of the tube section (10) is provided with a connector end (11) and the other end is provided with a connector tail (12). The connector end (11) is provided with a first groove (13). A sealing ring (15) is embedded in the first groove (13). At least two sealing grooves (16) are distributed in the sealing ring (15). A flexible seal (18) is installed on the inner ring end face of the connector tail (12). The flexible seal (18) can be embedded into the sealing groove (16) to form a seal when squeezed.

2. The waterproof jacking pipe section according to claim 1, characterized in that: The connecting tail (12) has a second groove (17) on its inner ring end face. The flexible seal (18) includes a pressure-bearing part (19) and an extension part (20). The pressure-bearing part (19) is close to the edge end face of the pipe section (10), and the extension part (20) is embedded in the second groove (17).

3. A waterproof jacking pipe section according to claim 2, characterized in that: A guide groove (14) is provided on the end of the connector (11) on the side close to the pipe section (10).

4. A waterproof jacking pipe section according to claim 3, characterized in that: The sealing groove (16) has a triangular cross-section.

5. A waterproof jacking pipe section according to claim 4, characterized in that: The inner annular surface of the extension portion (20) is roughened.

6. A waterproof jacking pipe section according to claim 5, characterized in that: The outer edge of the connector end (11) is chamfered.

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