Concrete pipeline connecting piece and connecting structure

Abstract

The utility model discloses a concrete pipeline connecting piece and a connecting structure. The pipeline connecting piece comprises an outer protective barrel, an inner inserting ring with a cross-shaped section is fixedly arranged in the middle of the inner side of the outer protective barrel, the outer protective barrel and a cross-shaped transverse section of the inner inserting ring are arranged in the same direction, and the outer protective barrel and a cross-shaped longitudinal section of the inner inserting ring are arranged perpendicularly. The connecting structure comprises a first pipe section and a second pipe section and further comprises the concrete pipeline connecting piece, inserting grooves are formed in the middle portions of the end faces of the first pipe section and the second pipe section, and the outer side faces of the first pipe section and the second pipe section are sleeved with the outer protective cylinder. The two ends of the cross-shaped transverse section of the inner inserting-connecting ring are inserted into the inserting-connecting grooves of the first pipe section and the second pipe section correspondingly, and the cross-shaped longitudinal section of the inner inserting-connecting ring is clamped between the end face of the first pipe section and the end face of the second pipe section. The method has the beneficial effects that the long-term anti-seepage performance is improved; field adjustment is reduced, construction difficulty is lowered, and rapid assembly construction is achieved.

Description

Technical Field

[0001] This application pertains to municipal engineering pipeline construction technology, specifically relating to a concrete pipe connector and connection structure. Background Technology

[0002] In municipal water supply and drainage, integrated pipe gallery, and other engineering fields, the reliability of concrete pipe joint sealing directly affects the long-term operational safety of the pipe network system. Existing concrete pipe connections mostly use socket joints or flange connections, which have problems such as reliance on a single waterproofing material, high installation precision requirements, leakage due to misaligned joints, and susceptibility to seepage after long-term use. Furthermore, some existing connectors suffer from structural complexity, low construction efficiency, and weak deformation resistance.

[0003] Therefore, this utility model addresses the shortcomings of existing technologies by providing a quick connection device for concrete pipes that combines multiple waterproof capabilities, convenient installation, and durable structure. Utility Model Content

[0004] The purpose of this application is to provide a concrete pipe connector and connection structure, which is a quick connector and connection structure for concrete pipes that has multiple waterproof capabilities, is easy to install, and has a durable structure, thus solving the problems of inconvenient connection and poor waterproof effect of existing concrete pipes.

[0005] The objective of this application is achieved through the following technical solution:

[0006] A concrete pipe connector includes an outer protective sleeve, with an inner insert ring of cross-shaped cross section fixedly provided in the middle of the inner side of the outer protective sleeve. The cross-shaped horizontal sections of the outer protective sleeve and the inner insert ring are arranged in the same direction, and the cross-shaped vertical sections of the outer protective sleeve and the inner insert ring are arranged perpendicularly.

[0007] Furthermore, the outer protective cylinder is made of steel plate, and the surface of the outer protective cylinder is provided with an anti-rust coating.

[0008] Furthermore, the inner insertion ring is made of concrete.

[0009] Furthermore, the outer protective cylinder and the inner insertion ring are fixedly connected by adhesive or by anchor bolts.

[0010] Furthermore, a water-stop groove is provided at the cross-shaped inner corner of the inner insertion ring.

[0011] A concrete pipe connection structure includes a first pipe section and a second pipe section, and also includes the aforementioned concrete pipe connector. The first pipe section and the second pipe section each have a spigot groove in the middle of their end faces. An outer protective sleeve is fitted onto the outer surfaces of the first pipe section and the second pipe section. The two ends of the cross-shaped horizontal section of the inner spigot ring are respectively inserted into the spigot grooves of the first pipe section and the second pipe section. The cross-shaped vertical section of the inner spigot ring is sandwiched between the end faces of the first pipe section and the second pipe section.

[0012] Furthermore, the cross-shaped transverse section of the inner insertion ring and the insertion groove are in clearance fit, with a clearance value ≤2mm.

[0013] Furthermore, the groove of the water-stop strip at the cross-shaped inner corner of the inner insertion ring is provided with an expansion water-stop strip that contacts the pipe section.

[0014] Furthermore, both the groove of the waterstop strip and the expansion waterstop strip have trapezoidal cross sections.

[0015] Furthermore, the inner insertion ring has an elastic sealing gasket at the outer corner of its cross shape that contacts the pipe section.

[0016] The beneficial effects of this application are:

[0017] (1) Multiple waterproofing: The multi-layered composite waterproofing structure can adapt to different leakage paths and improve long-term seepage prevention performance.

[0018] (2) Rapid installation: The standardized components are simple in design, and the prefabricated modular connectors match the pipe section slots, reducing on-site adjustments, lowering construction difficulty, and enabling rapid assembly construction.

[0019] (3) High durability: The steel plate-concrete composite structure takes into account both strength and corrosion resistance, and the rigid-flexible connection method enhances the resistance to foundation deformation.

[0020] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the connector in this application.

[0022] Figure 2 This is a schematic diagram of the connection structure of this application.

[0023] Figure 3 yes Figure 2 A sectional view along the AA direction.

[0024] In the figure: 1 - outer protection cylinder, 2 - inner insertion ring, 3 - waterstop groove, 4 - first pipe section, 5 - second pipe section, 6 - insertion slot, 7 - expansion waterstop strip, 8 - elastic sealing washer. Specific embodiments

[0025] The present application will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0026] Embodiment 1

[0027] Refer to Figure 1 As shown, a concrete pipe connector includes an outer protection cylinder 1 and an inner insertion ring 2. The outer protection cylinder 1 and the inner insertion ring 2 together form an annular structure with a cross-section in the shape of the Chinese character 'tu'.

[0028] The outer protection cylinder 1 is an annular cylindrical structure for sleeving and protecting the outside of the pipe section. In the middle of the inner side of the outer protection cylinder 1, an inner insertion ring 2 with a cross-shaped cross-section is fixedly provided. The inner insertion ring 2 is used to insert and connect the two pipe sections on both sides, and a waterproof component is arranged based on the inner insertion ring 2.

[0029] The cross-shaped horizontal segments of the outer protection cylinder 1 and the inner insertion ring 2 are arranged in the same direction, and the insertion connection is realized by using the cross-shaped horizontal segments. The cross-shaped vertical segments of the outer protection cylinder 1 and the inner insertion ring 2 are arranged perpendicular to each other. The cross-shaped vertical segments are used to realize the structural transition, and the cross-shaped vertical segments are used to connect with the outer protection cylinder 1 and serve as the structural basis for the cross-shaped horizontal segments.

[0030] The outer protection cylinder 1 is made of Q235 steel plate with a thickness of 3 - 5 mm, which is used to provide compressive protection circumferentially on the outside of the pipe section and directly form a rigid barrier waterproof layer. The surface of the outer protection cylinder 1 is provided with an anti-rust coating to improve the anti-corrosion ability of the outer protection cylinder 1 underground.

[0031] The inner insertion ring 2 is made of concrete. The connection between two adjacent pipe sections is realized through the inner insertion ring 2, and the gap path between the extended pipe section and the connector is increased through the inner insertion ring 2 to improve the waterproof and water-blocking effects between the pipe sections. The inner insertion ring 2 can also be made of reinforced concrete, with a cross-shaped steel bar skeleton arranged inside and a concrete layer wrapped outside.

[0032] The outer protection cylinder 1 and the inner insertion ring 2 are fixedly connected by an adhesive (high-strength epoxy resin adhesive) or by anchor bolts to ensure the connection strength between the two.

[0033] A waterstop groove 3 is provided at the cross-shaped inner corner of the inner insertion ring 2. The waterstop groove 3 is used to place the expansion waterstop strip 7 to further improve the waterproof and water-blocking effects between the pipe section and the connector.

[0034] Embodiment 2

[0035] Refer to Figure 2and Figure 3 As shown, a concrete pipe connection structure includes a first pipe section 4 and a second pipe section 5, and also includes the concrete pipe connector of Embodiment 1.

[0036] The outer protective sleeve 1 is fitted onto the outer surface of the first pipe section 4 and the second pipe section 5, continuously wrapping the circumferential connection of the pipe sections to directly form a rigid barrier waterproof layer.

[0037] Both the first pipe section 4 and the second pipe section 5 have insertion slots 6 at the middle of their end faces for insertion connection. The two ends of the cross-shaped horizontal section of the inner insertion ring 2 are inserted into the insertion slots 6 of the first pipe section 4 and the second pipe section 5 respectively, that is, the two pipe sections on both sides are fixed by inserting the two ends of the inner insertion ring 2 to connect and fix the two pipe sections into one piece.

[0038] The cross-shaped horizontal section of the inner insertion ring 2 is clearance-fitted with the insertion groove 6, with a clearance value ≤2mm. This clearance fit ensures that the horizontal section is firmly inserted into the groove, guaranteeing the connection strength between the two pipe sections. Furthermore, the inner insertion ring 2 extends the clearance path between the pipe section and the connector, improving the waterproof and water-blocking effect between the pipe sections.

[0039] The cross-shaped longitudinal section of the inner insertion ring 2 is sandwiched between the end faces of the first pipe section 4 and the second pipe section 5 to ensure tight fit between the structures. The inner surface of the cross-shaped longitudinal section is flush with the inner surface of the pipe section. The cross-shaped longitudinal section is used to transition the pipe section and achieve structural continuity.

[0040] An expansion water-stop strip 7 is provided in the groove 3 of the cross-shaped inner corner of the inner insertion ring 2, which contacts the pipe section. The expansion water-stop strip 7 expands when it comes into contact with water to achieve a seal, thereby improving the sealing effect between the pipe section and the connector. Both the water-stop groove 3 and the expansion water-stop strip 7 have trapezoidal cross sections. The groove depth is 1 / 2 of the height of the water-stop strip, ensuring the stable placement of the water-stop strip within the groove.

[0041] The inner insertion ring 2 has an elastic sealing gasket 8 at the outer corner of the cross shape that contacts the pipe section. The elastic sealing gasket 8 is made of EPDM rubber and is also used to improve the sealing effect between the pipe section and the connector.

[0042] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A concrete pipe connector, comprising an outer protective sleeve (1), characterized in that: In the middle of the inner side of the outer protective cylinder (1), a cross-shaped inner insertion ring (2) is fixedly arranged. The cross-shaped horizontal segments of the outer protective cylinder (1) and the inner insertion ring (2) are arranged in the same direction, and the cross-shaped vertical segments of the outer protective cylinder (1) and the inner insertion ring (2) are arranged perpendicular to each other; The outer protective cylinder is an annular cylindrical structure; the outer protective cylinder and the inner insertion ring together form an annular structure with a cross-sectional shape like the Chinese character "tu".

2. The concrete pipe connector according to claim 1, characterized in that: The outer protective cylinder (1) is made of steel plate, and an anti-rust coating is provided on the surface of the outer protective cylinder (1).

3. The concrete pipe connector according to claim 1 or 2, characterized in that: The inner insertion ring (2) is made of concrete.

4. The concrete pipe connector according to claim 1, characterized in that: The outer protective cylinder (1) and the inner insertion ring (2) are fixedly connected by an adhesive or by anchor bolts.

5. The concrete pipe connector according to claim 1, characterized in that: A water stop strip groove (3) is provided at the cross-shaped inner corner of the inner insertion ring (2).

6. A concrete pipe connection structure, comprising a first pipe section (4) and a second pipe section (5), characterized in that: It also includes the concrete pipe connector according to any one of claims 1 to 5. Plug-in slots (6) are respectively provided in the middle of the end faces of the first pipe section (4) and the second pipe section (5). The outer protective cylinder (1) is sleeved on the outer sides of the first pipe section (4) and the second pipe section (5). The two ends of the cross-shaped horizontal segment of the inner insertion ring (2) are respectively inserted into the plug-in slots (6) of the first pipe section (4) and the second pipe section (5), and the cross-shaped vertical segment of the inner insertion ring (2) is clamped between the end faces of the first pipe section (4) and the second pipe section (5).

7. The concrete pipe connection structure according to claim 6, characterized in that: The cross-shaped horizontal segment of the inner insertion ring (2) and the plug-in slot (6) are in clearance fit, and the clearance value is ≤ 2 mm.

8. The concrete pipe connection structure according to claim 6, characterized in that: An expansion water stop strip (7) contacting the pipe section is provided in the water stop strip groove (3) at the cross-shaped inner corner of the inner insertion ring (2).

9. The concrete pipe connection structure according to claim 8, characterized in that: Both the water stop strip groove (3) and the expansion water stop strip (7) have a trapezoidal cross-section.

10. The concrete pipe connection structure according to claim 6, 8 or 9, characterized in that: An elastic sealing washer (8) contacting the pipe section is provided at the cross-shaped outer corner of the inner insertion ring (2).

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