Socket type pipe jacking section structure

Abstract

The utility model belongs to the technical field of pipe jacking construction, and discloses a socket type pipe jacking section structure. The structure comprises a plurality of pipe bodies which are connected in a sleeved mode, in every two adjacent pipe bodies, the end of one pipe body is provided with a bellmouth, the end of the other pipe body is provided with an inserting opening, the inserting opening is inserted into the bellmouth in a sleeved mode, and a water swelling sealing ring and at least one annular water stopping sealing ring are arranged in an assembling gap between the bellmouth and the inserting opening in a clamped mode. The water swelling sealing ring is arranged to be capable of absorbing water after meeting water and capable of conducting swelling deformation in the axial direction of the pipe body so that the annular water stop sealing ring can be pushed in the direction close to the water leakage notch. By means of the arrangement, the double-sealing effect can be achieved in the assembly gap, the water swelling sealing ring can expand after meeting water and push the annular water stop sealing ring to block the water leakage notch, and therefore it can be guaranteed that water cannot permeate into the pipe body, and normal operation and construction safety of the pipe body are guaranteed; and the stability and the reliability of the pipe body in a high-pressure water environment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a socket and spigot pipe jacking pipe joint structure. Background Technique

[0002] With the continuous development of urban construction, the trenchless technology of underground space has been widely applied under the increasing attention of people. As a trenchless technology for laying underground pipelines that protects the environment, the pipe jacking construction technology uses the thrust of jacking equipment such as main jacking oil pumps to pass the tool pipe from the working well through the soil layer into the connection well without disturbing or slightly disturbing the soil layer structure outside the pipeline, and sequentially connect and bury the pipelines into the pipeline soil layer connecting these two wells.

[0003] In the actual construction process, adjacent pipe jackings are inserted into each other through the socket and spigot to achieve connection. However, in a geological environment with high groundwater pressure, traditional sealing methods may not be sufficient to prevent water penetration, resulting in leakage at the pipeline connection, affecting the normal operation of the pipeline and construction safety.

[0004] Based on the above, there is a need to design a socket and spigot pipe jacking pipe joint structure to solve the problems existing in the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a socket and spigot pipe jacking pipe joint structure, which can enhance the sealing performance between pipe jacking pipe joints, prevent groundwater from penetrating in, and ensure the stability and reliability of the pipeline in a high-pressure water environment.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The socket and spigot pipe jacking pipe joint structure includes a plurality of mutually sleeved pipe bodies. Among adjacent pipe bodies, one end of one pipe body is provided with a socket, and the end of the other pipe body is provided with a spigot. The spigot is sleeved and inserted into the socket. An expandable seal ring upon water contact and at least one annular water stop seal ring are clamped in the assembly gap between the socket and the spigot. The expandable seal ring upon water contact is arranged to absorb water after contacting water and can expand and deform along the axial direction of the pipe body to push the annular water stop seal ring towards the direction close to the water leakage gap.

[0008] Preferably, the annular water stop seal ring is an O-shaped water stop seal ring.

[0009] Preferably, the radial dimension r of the annular water stop seal ring is smaller than the radial dimension L of the assembly gap.

[0010] Preferably, the annular water stop seal ring is an annular rubber ring.

[0011] Preferably, the water-swellable sealing ring is an annular polyurethane sealing ring.

[0012] Preferably, along the axial direction of the pipe body, one annular water-stop sealing ring is provided at each of the opposite ends of the water-swellable sealing ring.

[0013] Preferably, the socket and spigot pipe joint structure further includes a locking member, which includes a first connection structure and a second connection structure. The first connection structure is provided on the socket, and the second connection structure is provided on the spigot. When the spigot is sleeved in the socket and the receiving surface of the socket fits and abuts against the insertion surface of the spigot, the first connection structure is connected to the second connection structure.

[0014] Preferably, the first connection structure is in a "ji"-shaped structure and includes a base portion and two oppositely arranged elastic clamping claws. The base portion is fixed on the side wall of the socket and extends along the radial direction of the pipe body. The two elastic clamping claws are arranged at intervals along the radial direction of the pipe body on the same side of the base portion, and a barb portion is provided at one end of each elastic clamping claw away from the base portion;

[0015] The second connection structure is an annular structure with a clamping hole, and the inner diameter dimension of the clamping hole is smaller than the outer diameter dimension of the barb portion. When the socket moves towards the spigot, the two elastic clamping claws can approach each other so that the barb portion can pass through the clamping hole.

[0016] Preferably, both the first connection structure and the second connection structure are fixed on the inner side wall of the pipe body.

[0017] Preferably, one end of the pipe body is provided with the socket, and the other end of the pipe body is provided with the spigot.

[0018] The beneficial effects of the socket and spigot pipe joint structure provided by the present utility model: The socket and spigot pipe joint structure provided by this embodiment can achieve a double sealing effect in the assembly gap between the socket and the spigot by arranging a water-swellable sealing ring and an annular water-stop sealing ring. On the one hand, it can realize a double sealing effect in the assembly gap; on the other hand, the water-swellable sealing ring can expand after encountering water and push the annular water-stop sealing ring to block the water leakage gap, thereby ensuring that high-pressure groundwater will not penetrate into the pipe body, and further guaranteeing the normal operation and construction safety of the pipe body, as well as the stability and reliability of the pipe body in a high-pressure water environment. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the socket and spigot pipe joint structure provided by the embodiment of the present utility model when the water-swellable sealing ring has not expanded;

[0020] Figure 2 It is a schematic structural diagram after the water-swellable seal ring in the socket-type pipe jacking pipe joint structure provided by the embodiment of the present utility model swells when encountering water;

[0021] Figure 3 is Figure 1 a partial enlarged view of the position A in

[0022] Figure 4 It is a schematic structural diagram of the locking member provided by the embodiment of the present utility model.

[0023] In the figure:

[0024] 100, water leakage gap; 1, pipe body; 11, socket; 111, receiving surface; 12, spigot; 121, insertion surface; 2, water-swellable seal ring; 3, annular water-stop seal ring; 4, locking member; 41, first connection structure; 411, base; 412, elastic claw; 413, barb; 42, second connection structure. Specific embodiments

[0025] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0026] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0028] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", and "left" are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] The socket-type jacking pipe joint structure provided by the present utility model will be introduced below in conjunction with the drawings and specific embodiments. It should be noted in advance that the socket-type jacking pipe joint structure provided by the present utility model is applicable to jacking pipes with rectangular cross-sections, quasi-rectangular cross-sections, circular cross-sections, etc. The present utility model does not limit this, and the following will take the circular cross-section jacking pipe as an example for illustration.

[0030] As Figures 1 to 3 shown, the socket-type jacking pipe joint structure provided by this embodiment includes a plurality of mutually sleeved pipe bodies 1. Among adjacent pipe bodies 1, one end of one pipe body 1 is provided with a socket 11 whose inner diameter is larger than the inner diameter of the pipe body 1, and the other end of the other pipe body 1 is provided with a spigot 12. The spigot 12 is sleeved and inserted into the socket 11, and the receiving surface 111 of the socket 11 abuts against the insertion surface 121 of the spigot 12 to achieve the sealed connection of two adjacent pipe bodies 1. In addition, in the radial direction of the pipe body 1, a water-swellable sealing ring 2 and at least one annular water-stop sealing ring 3 are clamped between the assembly gaps of the socket 11 and the spigot 12. When a water leakage gap 100 appears on the pipe body 1 and high-pressure groundwater enters the assembly gap, the water-swellable sealing ring 2 can absorb the high-pressure groundwater and can expand and deform along the axial direction of the pipe body 1. Furthermore, it can push the annular water-stop sealing ring 3 to move towards the direction close to the water leakage gap 100 until the water leakage gap 100 is completely blocked.

[0031] Therefore, the socket-type jacking pipe joint structure provided by this embodiment, by arranging the water-swellable sealing ring 2 and the annular water-stop sealing ring 3 between the assembly gaps of the socket 11 and the spigot 12, on the one hand, can achieve a double sealing effect within the assembly gap; on the other hand, the water-swellable sealing ring 2 can expand after encountering water and push the annular water-stop sealing ring 3 to block the water leakage gap 100, thereby ensuring that high-pressure groundwater will not penetrate into the pipe body 1, and further guaranteeing the normal operation and construction safety of the pipe body 1, as well as the stability and reliability of the pipe body 1 in a high-pressure water environment.

[0032] It should be noted that for the pipe body 1 used in this embodiment, one end is provided with the above-mentioned socket 11, and the other end is provided with the above-mentioned spigot 12, so that the connection quantity of the pipe body 1 can be adjusted according to actual needs for this socket-type jacking pipe joint structure, and it is convenient for production and manufacturing, and can be mass-produced.

[0033] Optionally, in this embodiment, the water-swellable sealing ring 2 is an annular polyurethane sealing ring. After the polyurethane material comes into contact with water, it can rapidly expand, thus shortening the reaction time and accelerating the efficiency of filling the water leakage gap 100. In addition, the polyurethane material has high durability and corrosion resistance, can maintain good sealing performance for a long time, and is not easily eroded by water.

[0034] Furthermore, in this embodiment, along the axial direction of the pipe body 1, an annular water-stop sealing ring 3 is provided at each of the opposite ends of the water-swellable sealing ring 2. So that when water leakage occurs at one end of the water-swellable sealing ring 2, or water leakage occurs at both ends, the water-swellable sealing ring 2 can push the two annular water-stop sealing rings 3 to move simultaneously in the direction close to the water leakage gap 100, thereby being able to block the two water leakage gaps 100 at the same time, and further improving the sealing effect of the pipe body 1.

[0035] Specifically, in this embodiment, the annular water-stop sealing ring 3 is an O-shaped water-stop sealing ring. Due to its circular cross-section, the O-shaped water-stop sealing ring can provide a more uniform pressure distribution, thus achieving a better sealing effect. Moreover, the outer peripheral surface of the O-shaped water-stop sealing ring is in rolling contact with the pipe body 1, reducing the frictional resistance between it and the side wall surface of the pipe body 1, and is more conducive to being pushed by the water-swellable sealing ring 2 to the water leakage gap 100.

[0036] Furthermore, in this embodiment, the radial dimension r of the annular water-stop sealing ring 3 is smaller than the radial dimension L of the assembly gap. In this way, the upper surface of the annular water-stop sealing ring 3 can be spaced from the inner side wall surface of the socket 12, and there is a gap between them, which can further reduce the movement resistance of the annular water-stop sealing ring 3. Moreover, when water leaks in the assembly gap, the water-swellable sealing ring 2 can also receive the water leakage information faster through this gap, and thus make an expansion feedback more timely, further accelerating the speed of the annular water-stop sealing ring 3 blocking the water leakage gap 100.

[0037] Preferably, in this embodiment, the annular water-stop sealing ring 3 is an annular rubber ring. The annular rubber ring has good elasticity, low production cost, wide application and is easy to obtain. Of course, in other embodiments, the annular water-stop sealing ring 3 can also be any one of an annular polytetrafluoroethylene ring, an annular silica gel ring or an annular polyethylene ring, and the above types all belong to the scope protected by the present utility model.

[0038] Optionally, the socket-and-spigot pipe joint structure provided in this embodiment further includes a locking member 4, and the locking member 4 includes a first connection structure 41 and a second connection structure 42. Among them, the first connection structure 41 is provided on the socket 11, and the second connection structure 42 is provided on the spigot 12. When the socket 11 is sleeved inside the spigot 12 and the insertion surface 121 of the socket 11 fits and abuts against the insertion surface 121 of the spigot 12, the first connection structure 41 is connected to the second connection structure 42 to fixedly connect the two pipe bodies 1. Through the arrangement of the locking member 4, it can be ensured that the pipe bodies 1 are tightly connected and prevent moisture from seeping in from the joint between the two.

[0039] Specifically, referring to Figure 4 As shown, the first connection structure 41 has a "C"-shaped structure and includes a base portion 411 and two oppositely arranged elastic claws 412. The base portion 411 is fixedly provided on the side wall of the socket 11 and extends along the radial direction of the pipe body 1. The two elastic claws 412 are arranged at intervals along the radial direction of the pipe body 1 on the same side of the base portion 411, and a barb portion 413 is provided at one end of each elastic claw 412 away from the base portion 411. In addition, the second connection structure 42 provided in this embodiment is an annular structure with a clamping hole, and the inner diameter dimension of the clamping hole is smaller than the outer diameter dimension of the barb portion 413.

[0040] In specific use, for example, when the spigot 12 moves towards the socket 11, the two elastic claws 412 are deformed by the clamping hole, and the two elastic claws 412 approach each other so that the barb portion 413 can pass through the clamping hole, and then the two elastic claws 412 move away from each other and return to the original spaced state. At this time, the second connection structure 42 can be tightly clamped between the barb portion 413 and the base portion 411, so that the adjacent two pipe bodies 1 are stably connected. The above-mentioned locking member 4 has a simple structure, and the first connection structure 41 is easy to insert into the second connection structure 42 and lock firmly, greatly enhancing the sealing effect between the adjacent two pipe bodies 1.

[0041] Furthermore, in this embodiment, both the first connection structure 41 and the second connection structure 42 are fixedly provided on the inner side wall of the pipe body 1 to prevent interference and damage to the locking member 4 from the external environment, improving the stability and reliability of the connection between the adjacent pipe bodies 1.

[0042] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. The socket-type jacking pipe joint structure is characterized by: The invention comprises a plurality of mutually sleeved pipe bodies (1), wherein the end of one of the adjacent pipe bodies (1) is provided with a socket (11), and the end of the other pipe body (1) is provided with a plug (12), wherein the plug (12) is sleeved and inserted into the socket (11), and a water-expandable sealing ring (2) and at least one annular water-stop sealing ring (3) are sandwiched in the assembly gap between the socket (11) and the plug (12), wherein the water-expandable sealing ring (2) is configured to absorb water after contacting water and to expand and deform along the axial direction of the pipe body (1) so as to push the annular water-stop sealing ring (3) towards a direction close to a water leakage gap (100).

2. The socket-and-spigot jacking pipe joint structure according to claim 1 is characterized in that: The annular water-stop sealing ring (3) is an O-shaped water-stop sealing ring.

3. The socket-and-spigot jacking pipe joint structure according to claim 2 is characterized in that: The radial dimension r of the annular water-stop sealing ring (3) is smaller than the radial dimension L of the assembly gap.

4. The socket-and-spigot jacking pipe joint structure according to claim 1, characterized in that: The annular water-stop sealing ring (3) is an annular rubber ring.

5. The socket-and-spigot jacking pipe joint structure according to claim 1, characterized in that: The water-swellable sealing ring (2) is an annular polyurethane sealing ring.

6. The socket-and-spigot jacking pipe joint structure according to claim 1, characterized in that: Along the axial direction of the tube body (1), an annular water-stop sealing ring (3) is respectively provided at the opposite ends of the water-swellable sealing ring (2).

7. The socket-and-spigot jacking pipe joint structure according to any one of claims 1 to 6, characterized in that: The socket-and-spigot type jacking pipe joint structure also includes a locking member (4), and the locking member (4) includes a first connection structure (41) and a second connection structure (42). The first connection structure (41) is arranged on the socket (11), and the second connection structure (42) is arranged on the plug (12). When the plug (12) is sleeved in the socket (11), and the receiving surface (111) of the socket (11) is in contact with the plug surface (121) of the plug (12), the first connection structure (41) is connected to the second connection structure (42).

8. The socket-and-spigot jacking pipe joint structure according to claim 7, characterized in that: The first connection structure (41) is in a "J"-shaped structure and comprises a base (411) and two elastic claws (412) arranged opposite to each other, the base (411) being fixed to the side wall of the socket (11) and extending along the radial direction of the tube body (1), the two elastic claws (412) being arranged at intervals on the same side of the base (411) along the radial direction of the tube body (1), and each of the elastic claws (412) having a barb (413) at one end away from the base (411); The second connection structure (42) is an annular structure having a snap-fit ​​hole, and the inner diameter of the snap-fit ​​hole is smaller than the outer diameter of the barb portion (413). When the socket (11) moves toward the insertion port (12), the two elastic claws (412) can approach each other so that the barb portion (413) can be inserted into the snap-fit ​​hole.

9. The socket-and-spigot jacking pipe joint structure according to claim 8, characterized in that: The first connection structure (41) and the second connection structure (42) are both fixedly arranged on the inner side wall of the tube body (1).

10. The socket-and-spigot jacking pipe joint structure according to any one of claims 1 to 6, characterized in that: The socket (11) is provided at one end of the tube body (1), and the socket (12) is provided at the other end of the tube body (1).

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