Pipe connection kit with expansion joint

Abstract

The present invention relates to a pipe connection assembly with an expansion joint. The pipe connection assembly comprises at least two pipe bodies, wherein a spigot section is connected to one end of one pipe body, and a bell section is connected to one end of the other pipe body. The pipe connection assembly with the expansion joint also comprises a sealing ring arranged between the outer peripheral wall of the spigot section and the inner peripheral wall of the bell section, and a connecting piece connected between the spigot section and the bell section. At least one of the spigot section, the bell section and the connecting piece is provided with an expansion joint that can be stretched in the axial direction. The expansion joint is a single-wall pipe body composed of troughs and peaks alternately arranged in the axial direction. The present invention provides a corrugated single-wall expansion joint between the connection part of the bell and the spigot. During the geological settlement process of the pipe, the stretching force will play a stretching buffering role through the deformation of the expansion joint, which can effectively prevent the bell and the spigot from being relatively separated, and ensure that the pipe is not easily damaged, thereby improving the sealing performance of the pipe connection.

Description

Technical Field

[0001] The invention relates to the technical field of pipes, in particular to a pipe connection assembly with an expansion joint. Background Art

[0002] like Figure 1 An existing pipe connection method shown is to use a trumpet-shaped socket and a spigot for matching insertion, and a sealing ring is set between the socket and the spigot for sealing connection, but the sealing ring only plays a sealing role, and does not play a role in axially fixing the socket and the spigot. When encountering geological subsidence and other phenomena, the spigot of the pipe and the sealing ring thereon are easy to fall outward in the axial direction relative to the socket, so that a gap is formed between the sealing ring and the inner circumferential wall of the socket, thereby reducing the sealing performance of the pipe.

[0003] like Figure 2 Another pipe connection structure shown in Figure 1 On this basis, an anti-slip piece is added to connect the socket and the plug, so as to prevent the plug from axially disengaging from the socket, so as to solve the problem of axial displacement of the pipe and deterioration of sealing performance during geological subsidence. However, when the pulling force is too large, the anti-slip piece or the socket will be pulled off, thereby losing the anti-slip effect. Summary of the invention

[0004] The purpose of the present invention is to overcome the above shortcomings and provide a pipe connection assembly with an expansion joint. The pipe connection assembly is provided with a corrugated single-wall expansion joint between the connection part of the socket and the plug. During the geological settlement process of the pipe, the tensile force will play a tensile buffering role through the deformation of the expansion joint, which can effectively prevent the relative separation of the socket and the plug, and ensure that the pipe is not easily damaged, thereby improving the sealing performance of the pipe connection.

[0005] The present invention is achieved through the following technical scheme: a pipe connection assembly with an expansion joint, characterized in that it includes at least two pipe bodies, one end port of one pipe body is fixedly connected to a socket section, and one end port of the other pipe body is fixedly connected to a socket section for matching with the socket section. The pipe connection assembly with the expansion joint also includes a sealing ring arranged between the outer peripheral wall of the socket section and the inner peripheral wall of the socket section, and a connecting piece connected between the socket section and the socket section for fixedly connecting the two. At least one of the socket section, the socket section and the connecting piece is provided with an expansion joint that can be stretched along the axial direction. The expansion joint is a single-wall pipe body composed of wave troughs and wave peaks alternately arranged in the axial direction.

[0006] Preferably, the telescopic joint is arranged in the socket section.

[0007] In order to prevent the socket and the plug from falling off, the socket section also includes a clamping section and a connecting section. The clamping section, the telescopic joint, and the connecting section are sequentially arranged from the outer end of the socket section toward the direction close to the pipe body. The connecting section is used to connect the telescopic joint and the pipe body. The inner peripheral wall of the clamping section is provided with a clamping groove recessed in a direction away from the central axis of the pipe body. The plug section is provided with an anti-falling installation groove for installing a connector at an outer peripheral position corresponding to the clamping groove.

[0008] The connecting piece includes an anti-slip body fixedly installed in the anti-slip installation groove and one or more elastic anti-slip bodies fixedly installed on the outer peripheral wall of the anti-slip body and exposing the anti-slip installation groove. The elastic anti-slip body has elasticity so that it can shrink or fit onto the anti-slip body when pressed, so that the connecting piece can follow the socket section through the clamping section to the position of the clamping groove, and then can be reset and pressed against the clamping groove under the action of its own elasticity so that the socket section cannot move axially relative to the socket section.

[0009] In order to ensure the sealing performance of the pipe, the outer periphery of the sealing ring is provided with a sealing flange which is installed in cooperation with the groove of the inner peripheral wall of at least one wave crest of the expansion joint. The sealing ring is installed in the groove of the inner peripheral wall of the wave crest of the expansion joint through the sealing flange, and when the plug section is inserted, the inner peripheral wall of the sealing ring is sealingly sleeved on the outer periphery of the plug section.

[0010] Preferably, the anti-slip body is annular, and the elastic anti-slip body is sheet-shaped, there are more than two of them and they are arranged in sequence along the circumferential direction of the outer wall of the anti-slip body; the bottom of each elastic anti-slip body is fixedly connected to the anti-slip body, and the elastic anti-slip body gradually extends outwardly away from the axial line of the socket section as it extends from the fixed connection position in the direction away from the outer port of the socket section.

[0011] Preferably, the anti-drop body is composed of two semicircular rings, which are connected to each other by bolts and fixed in the anti-drop installation groove.

[0012] Preferably, the port at the other end of the pipe body provided with the socket section is fixedly connected to the bell section, and the port at the other end of the pipe body provided with the bell section is fixedly connected to the socket section.

[0013] In order to facilitate the integral molding of the pipe, the pipe body is a double-wall corrugated pipe.

[0014] Additionally, the telescopic joint is arranged on the socket section and is located between a fixed installation position of the socket section and the connector and a connection position of the socket section and the pipe body.

[0015] Compared with the previous technology, the beneficial effects of the present invention are:

[0016] 1. The present invention provides a pipe connection assembly with an expansion joint. The pipe connection assembly is provided with a corrugated single-wall expansion joint. During the geological settlement process of the pipe, the stretching force will be concentrated on the expansion joint to buffer the stretching, which can effectively prevent the socket and the spigot from being relatively separated, ensure that the pipe is not easily damaged, and improve the sealing performance of the pipe connection.

[0017] 2. The present invention provides a pipe connection assembly with an expansion joint, wherein the expansion joint is arranged on the socket section to replace the existing trumpet-shaped socket, and the sealing ring is provided with a sealing flange that can cooperate with the wave crest groove on the inner wall of the expansion joint. When the expansion joint is in the process of being pulled, the peak position of the wave crest of the expansion joint will approach the central axis position (that is, the wave crest height of the expansion joint will decrease), thereby continuously compressing the sealing ring, so that the matching relationship between the sealing ring and the socket section becomes increasingly tight, and the sealing performance can be continuously improved.

[0018] 3. The present invention provides a pipe connection assembly with an expansion joint, wherein an expansion joint is provided on the socket section, and the expansion joint is a single-wall corrugated structure, which has higher compressive strength than the existing straight trumpet-shaped socket.

[0019] 4. The present invention provides a pipe connection assembly with an expansion joint, wherein the pipe body is a double-wall corrugated pipe, and during the pipe forming process, the pipe body, the socket section and the spigot section can be integrally formed through a forming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of existing pipe connection structure Figure 1 ;

[0021] Figure 2 Schematic diagram of existing pipe connection structure Figure 2 ;

[0022] Figure 3 It is an explosion diagram of embodiment 1;

[0023] Figure 4 The internal diagram of the first embodiment Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the interior of Example 1 after removing the sealing ring and the connecting piece;

[0025] Figure 6 It is a structural schematic diagram of the sealing ring in the first embodiment;

[0026] Figure 7 It is an exploded schematic diagram of the connecting member in the first embodiment;

[0027] Figure 8 It is a structural schematic diagram of the connecting member in the first embodiment;

[0028] Fig. 9 The internal diagram of the first embodiment Figure 2 ;

[0029] Fig.10 This is a schematic diagram of the use status of the first embodiment;

[0030] Fig.11 This is an internal schematic diagram of Embodiment 2;

[0031] Fig.12 This is an internal schematic diagram of Example 3.

[0032] Description of the numbers: 1-tube body, 2-socket section, 21-anti-drop installation groove, 3-socket section, 31-clamping section, 311-clamping groove, 32-connecting section, 4-sealing ring, 41-sealing flange, 5-connecting piece, 51-anti-drop body, 52-elastic anti-drop body, 6-expansion joint, 61-wave peak groove. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the accompanying drawings:

[0034] Embodiment 1:

[0035] like Figure 3-10 As shown, a pipe connection assembly with an expansion joint is characterized in that it includes at least two pipe bodies 1, one end port of one pipe body 1 is fixedly connected to a socket section 2, and one end port of the other pipe body 1 is fixedly connected to a socket section 3 for matching with the socket section 2. The pipe connection assembly with the expansion joint also includes a sealing ring 4 arranged between the outer peripheral wall of the socket section 2 and the inner peripheral wall of the socket section 3, and a connecting piece 5 connected between the socket section 2 and the socket section 3 for fixedly connecting the two. At least one of the socket section 2, the socket section 3 and the connecting piece 5 is provided with an expansion joint 6 that can be stretched along the axial direction, and the expansion joint 6 is a single-wall pipe body composed of wave troughs and wave peaks alternately arranged in the axial direction.

[0036] Preferably, the telescopic joint 6 is arranged in the socket section 3 .

[0037] In order to prevent the socket and the plug from falling off, the socket section 3 also includes a clamping section 31 and a connecting section 32. The clamping section 31, the telescopic joint 6, and the connecting section 32 are sequentially arranged from the outer end of the socket section 3 to the direction close to the pipe body 1. The connecting section 32 is used to connect the telescopic joint 6 and the pipe body 1. The inner peripheral wall of the clamping section 31 is provided with a clamping groove 311 recessed in the direction away from the central axis of the pipe body 1. The plug section 2 is provided with an anti-falling installation groove 21 for installing the connector 5 at a peripheral position corresponding to the clamping groove 311.

[0038] The connector 5 includes an anti-slip body 51 fixedly installed in the anti-slip installation groove 21 and one or more elastic anti-slip bodies 52 fixedly installed on the outer peripheral wall of the anti-slip body 51 and exposed from the anti-slip installation groove 21. The elastic anti-slip body 52 has elasticity so that it can shrink or fit to the anti-slip body 51 when pressed, so that the connector 5 can follow the socket section 2 through the clamping section 31 to the location of the clamping groove 311, and then reset and press against the clamping groove 311 under its own elasticity so that the socket section 2 cannot move axially relative to the socket section 3. The connector 5 is not limited to the structure of an anti-slip member, and can also be a pipe clamp that connects the socket section and the socket.

[0039] In order to ensure the sealing performance of the pipe, the outer periphery of the sealing ring 4 is provided with a sealing flange 41 which is installed in cooperation with the groove 61 of the inner peripheral wall of at least one wave crest of the expansion joint 6. The sealing ring 4 is installed in the groove 61 of the inner peripheral wall of the wave crest of the expansion joint 6 through the sealing flange 41, and when the plug section 2 is inserted, the inner peripheral wall of the sealing ring 4 is sealingly sleeved on the outer periphery of the plug section 2.

[0040] Preferably, the anti-slip body 51 is annular, and the elastic anti-slip body 52 is sheet-shaped, with more than two of them and arranged in sequence along the circumferential direction of the outer wall of the anti-slip body 51; the bottom of each elastic anti-slip body 52 is fixedly connected to the anti-slip body 51, and the elastic anti-slip body 52 gradually extends outwardly away from the axis of the socket section 2 as it extends from the fixed connection position in the direction away from the outer port of the socket section 2. The anti-slip body 51 can also be in a "C" shape, and the connector 5 can be directly clamped in the anti-slip installation groove 21 through the C-shaped notch position.

[0041] Preferably, the anti-drop body 51 is composed of two semicircular rings, which are connected to each other by bolts and fixed in the anti-drop installation groove 21 .

[0042] Preferably, the port at the other end of the pipe body 1 provided with the socket section 2 is fixedly connected to the bell section 3, and the port at the other end of the pipe body 1 provided with the bell section 3 is fixedly connected to the socket section 2.

[0043] In order to facilitate the integrated forming of the pipe, the pipe body 1 is a double-wall corrugated pipe, wherein the pipe body 1 is not limited to the double-wall corrugated pipe, but can also be other pipes, such as spiral corrugated pipes, solid wall pipes and the like.

[0044] Embodiment 2:

[0045] like Fig.11 As shown, the difference between this embodiment and the first embodiment is that the telescopic joint 6 is arranged on the socket section 2 and is located between the fixed installation position of the socket section 2 and the connecting member 5 and the connection position of the socket section 2 and the pipe body 1 .

[0046] Embodiment three:

[0047] like Fig.12 As shown, the difference between this embodiment and the first embodiment is that the telescopic joint 6 is located in the connecting member 5 .

[0048] Compared with the above embodiments, the structural performance of the embodiment 1 is better than that of the expansion joint set on the socket section and the connector. First, when the expansion joint is set on the socket section, the inner wall of the socket section will form a concave-convex corrugated structure, which affects the flow rate of the water flow; second, when the expansion joint is set on the connector, since it is located between the socket section and the socket section, the installation space of the connector is limited, which easily causes the connector to break at the expansion joint. In particular, when the expansion joint is set on the socket section, although the flow rate of the water flow is affected when conveying fluid, it can be used in the field of cable protection tubes.

[0049] Although the present invention is illustrated and described by specific embodiments and their alternatives, it should be understood that various changes and modifications within the spirit and scope of the present invention can be implemented. Therefore, it should be understood that the present invention is not limited in any sense except by the limitations of the attached claims and their equivalents.

Claims

1. A pipe connection assembly with an expansion joint, Features: The invention comprises at least two pipe bodies (1), wherein a spigot section (2) is fixedly connected to one end of one pipe body (1), wherein a socket section (3) for fitting with the spigot section (2) is fixedly connected to one end of the other pipe body (1), wherein the pipe connection assembly with a telescopic joint further comprises a sealing ring (4) arranged between the outer peripheral wall of the spigot section (2) and the inner peripheral wall of the socket section (3), and a connecting piece (5) connected between the spigot section (2) and the socket section (3) for fixedly connecting the two, wherein a telescopic joint (6) capable of being stretched in the axial direction is arranged in the socket section (3), wherein the telescopic joint (6) is a single-wall pipe body composed of wave troughs and wave peaks arranged alternately in a concave and convex manner in the axial direction; The socket section (3) further comprises a clamping section (31) and a connecting section (32); the clamping section (31), the telescopic joint (6), and the connecting section (32) are arranged in sequence from the outer end of the socket section (3) in a direction close to the pipe body (1); the connecting section (32) is used to connect the telescopic joint (6) and the pipe body (1); the inner peripheral wall of the clamping section (31) is provided with a clamping groove (311) recessed in a direction away from the central axis of the pipe body (1); and the socket section (2) is provided with an anti-dropping installation groove (21) for installing the connecting piece (5) at an outer peripheral position corresponding to the clamping groove (311); The connecting member (5) comprises an anti-slip body (51) fixedly mounted in the anti-slip installation groove (21) and one or more elastic anti-slip bodies (52) fixedly mounted on the outer peripheral wall of the anti-slip body (51) and exposed from the anti-slip installation groove (21), wherein the elastic anti-slip body (52) has elasticity such that it can shrink or fit onto the anti-slip body (51) when pressed, so that the connecting member (5) can follow the socket section (2) through the clamping section (31) to reach the position of the clamping groove (311), and then can be reset and pressed against the clamping groove (311) under the action of its own elasticity, so that the socket section (2) cannot move axially relative to the socket section (3); The outer periphery of the sealing ring (4) is provided with a sealing flange (41) which is mounted in cooperation with a groove (61) on the inner peripheral wall of at least one wave crest of the telescopic joint (6); the sealing ring (4) is mounted in cooperation with the groove (61) on the inner peripheral wall of the wave crest of the telescopic joint (6) via the sealing flange (41); and when the plug section (2) is inserted, the inner peripheral wall of the sealing ring (4) is sealingly sleeved on the outer periphery of the plug section (2); when the telescopic joint is being pulled out, the peak position of the wave crest of the telescopic joint will approach the central axis position, thereby continuously pressing the sealing ring.

2. The pipe connection assembly with expansion joint according to claim 1, Features: The anti-slip body (51) is annular, and the elastic anti-slip body (52) is sheet-shaped. There are more than two of them and they are arranged in sequence along the circumferential direction of the outer wall of the anti-slip body (51). The bottom of each elastic anti-slip body (52) is fixedly connected to the anti-slip body (51), and the elastic anti-slip body (52) gradually extends outwardly in a direction away from the axis of the socket section (2) as it extends from the fixed connection position in a direction away from the outer port of the socket section (2).

3. The pipe connection assembly with expansion joint according to claim 2, Features: The anti-drop body (51) is composed of two semicircular rings, which are connected to each other by bolts and fixed in the anti-drop installation groove (21).

4. The pipe connection assembly with expansion joint according to claim 1, Features: The port at the other end of the pipe body (1) provided with the socket section (2) is fixedly connected to the bell section (3), and the port at the other end of the pipe body (1) provided with the bell section (3) is fixedly connected to the socket section (2).

5. The pipe connection assembly with expansion joint according to claim 1, Features: The pipe body (1) is a double-wall corrugated pipe.

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