Continuous fiber reinforced polyethylene pipe connecting piece and operation method thereof

Abstract

The invention belongs to the technical field of pipeline connection, and discloses a continuous fiber reinforced polyethylene pipe connecting piece and an operation method thereof.The continuous fiber reinforced polyethylene pipe connecting piece comprises an adaptive device, a Kraft hoop and continuous fiber reinforced polyethylene pipes, and the two continuous fiber reinforced polyethylene pipes are connected through the adaptive device; the connecting areas, connected with the two continuous fiber reinforced polyethylene pipes, of the two ends of the adaptive device are wrapped by the Kraft hoop and tightly fixed to the connecting areas, the end faces of the two sides of the adaptive device are each of a circular ring body structure, and a circular ring-shaped groove is formed between an outer circular ring of the adaptive device and an inner circular ring of the adaptive device. A rubber sealing gasket is installed in the annular groove, and the top of the inner circular ring is higher than the top of the rubber sealing gasket. The continuous fiber reinforced polyethylene pipe connecting piece is mainly used for connecting the continuous fiber reinforced polyethylene pipes, the continuous fiber reinforced polyethylene pipes are connected through the adapting device, the connecting areas of the continuous fiber reinforced polyethylene pipes and the adapting device are tightly fixed through the Kraft hoop, connection is fast, and the sealing effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline connection, and in particular relates to a continuous fiber reinforced polyethylene pipe connector and an operating method thereof. Background Art

[0002] Composite pipes are commonly used in the fields of urban water diversion and water transmission, municipal water supply pipe networks, urban rainwater and sewage pipe networks, farmland irrigation, water conservancy and hydropower, petrochemicals, etc. The strength of existing composite pipes is enhanced by setting a reinforcement layer.

[0003] At present, during the installation and use of composite pipes or some pipelines, some pipelines need to be connected. The conventional connection method has the problems of loose connection, poor sealing after connection, liquid leakage in the pipeline or falling off between the pipelines.

[0004] Based on this, a continuous fiber reinforced polyethylene pipe connector and an operation method thereof are studied and involved. Summary of the invention

[0005] The present invention provides a continuous fiber reinforced polyethylene pipe connector. Two continuous fiber reinforced polyethylene pipes are connected by an adapter and a Kraft clamp. The adapter itself is a torus structure. An annular groove is arranged between the outer ring and the inner ring. A rubber sealing pad can be installed in the annular groove. The rubber sealing pad is in close contact with the inner surface of the annular groove. In the process of connecting and installing the continuous fiber reinforced polyethylene pipe and the adapter, it plays a good guiding connection role. The end faces on both sides of the adapter have the same structure, so the two ends of the adapter can be connected to the two continuous fiber reinforced polyethylene pipes respectively. The surface of the continuous fiber reinforced polyethylene pipe is provided with a plurality of continuous inorganic non- The metal fiber and the thermoplastic material are compounded to form parallel three-dimensional thread grooves, and the reinforcing ribs are arranged to separate them. The reinforcing ribs are continuous along the longitudinal axis of the composite pipe body, and the reinforcing ribs are perpendicular to the parallel axis of the three-dimensional thread grooves, thereby enhancing the rigidity and stiffness of the continuous fiber reinforced polyethylene pipe. After the adapter is connected to the continuous fiber reinforced polyethylene pipe, a Kraft clamp is used to fix the adapter and the continuous fiber reinforced polyethylene pipe in the connection area, thereby achieving end face sealing of the continuous fiber reinforced polyethylene pipe and tight connection of the two continuous fiber reinforced polyethylene pipes, thereby solving the problems of poor sealing and easy leakage in the connection process of the continuous fiber reinforced polyethylene pipe in the prior art. The present invention is achieved through the following technical solutions: A continuous fiber reinforced polyethylene pipe connector comprises an adapter, a Kraft clamp and a continuous fiber reinforced polyethylene pipe. Two continuous fiber reinforced polyethylene pipes are connected by the adapter. The Kraft clamp covers the connection areas at both ends of the adapter which are respectively connected to the two continuous fiber reinforced polyethylene pipes and tightly fixes the connection areas. Both end faces of the adapter are annular structures. An annular groove is formed between the outer ring of the adapter and the inner ring of the adapter. A rubber sealing pad is installed in the annular groove. The rubber sealing pad is in close contact with the inner surface of the annular groove. After the rubber sealing pad is installed in the annular groove, the top height of the inner ring is higher than the top height of the rubber sealing pad.

[0006] Optionally, based on the above solution, the depth of the outer ring of the adapter device is the same as the depth of the inner ring of the adapter device.

[0007] Optionally, based on the above solution, the width of the annular groove is greater than or equal to the wall thickness of the rubber sealing pad.

[0008] Optionally, based on the above solution, the side structures at both ends of the adapter device are adaptively connected to the continuous fiber reinforced polyethylene pipe.

[0009] Optionally, based on the above scheme, the surface of the continuous fiber reinforced polyethylene tube is a three-dimensional thread groove that is perpendicular to the longitudinal axis of the continuous fiber reinforced polyethylene tube and is distributed in parallel and continuously. The three-dimensional thread groove is formed by molding and compounding continuous inorganic non-metallic fibers and thermoplastic materials, and reinforcing ribs are formed at the mold closing point. The reinforcing ribs are parallel to the central axis of the continuous fiber reinforced polyethylene tube and are continuous along the longitudinal axis of the continuous fiber reinforced polyethylene tube.

[0010] Optionally, based on the above solution, the shape of the three-dimensional thread groove is any one of a triangle, a trapezoid, and a rectangle.

[0011] Optionally, based on the above solution, the depth of the three-dimensional thread groove is 2mm-20mm, and the width of the three-dimensional thread groove is 5mm-50mm.

[0012] Optionally, based on the above solution, the number of the reinforcing ribs is greater than or equal to one.

[0013] Optionally, based on the above solution, the number of the reinforcing ribs is two and they are symmetrically distributed with the central axis of the continuous fiber reinforced polyethylene pipe as the symmetry axis.

[0014] Another object of the present application is to provide an operating method for a continuous fiber reinforced polyethylene pipe connector, comprising the following steps: 1) Install the rubber sealing gasket in the annular groove of the adapter device, then insert one end of the adapter device into a continuous fiber reinforced polyethylene tube, guide the connecting end face of the continuous fiber reinforced polyethylene tube into the annular groove, and under the guiding and directional action of the adapter device, the annular groove and the rubber sealing gasket installed in the annular groove form a clearance fit with the contact end of the continuous fiber reinforced polyethylene tube, thus completing the connection between one end of the adapter device and the continuous fiber reinforced polyethylene tube; 2) Repeat step 1) to complete the connection between the other end of the adapter and another continuous fiber reinforced polyethylene pipe, and then place the Kraft clamp in the connection area between the two continuous fiber reinforced polyethylene pipes and the adapter. The Kraft clamp covers the connection area. The metal belt of the Kraft clamp is adapted to the three-dimensional thread groove structure of the continuous fiber reinforced polyethylene pipe. Tighten the fastening screws of the Kraft clamp to complete the connection between the continuous fiber reinforced polyethylene pipe connector and the two continuous fiber reinforced polyethylene pipes. Compared with the prior art, the present invention has the following beneficial effects: 1) The continuous fiber reinforced polyethylene pipe connector described in the present application is mainly used for connecting continuous fiber reinforced polyethylene pipes.

[0015] 2) In the technical solution of the present application, the adapter device has a main body of a circular ring structure, and a circular ring groove for installing a rubber sealing gasket is provided between the outer ring and the inner ring of the adapter device. After installation, the rubber sealing gasket is in close contact with the inner surface of the circular ring groove. At the same time, the top height of the rubber sealing gasket after installation is lower than the top height of the inner ring of the adapter device. The structural design of the adapter device is conducive to the close connection between the end face of one end of the continuous fiber reinforced polyethylene tube and the circular ring groove of the adapter device. Similarly, the other end of the adapter device is tightly connected to the other end of another continuous fiber reinforced polyethylene tube in the same way, so that the two continuous fiber reinforced polyethylene tubes can be quickly connected together, and the effect of sealing the connecting end faces of the continuous fiber reinforced polyethylene tubes is achieved.

[0016] 3) In the technical solution, the surface of the continuous fiber reinforced polyethylene pipe is a three-dimensional thread groove formed by a composite of continuous inorganic non-metallic fibers and thermoplastic materials. The shape of the three-dimensional thread groove can be a triangle, a trapezoid, or a rectangle, and reinforcing ribs composed of continuous fibers and thermoplastic materials are naturally formed at the mold joint of the composite molding. The reinforcing ribs are parallel to the central axis of the composite pipe body. The setting of the three-dimensional thread groove and the reinforcing ribs effectively enhances the rigidity and stiffness of the continuous fiber reinforced polyethylene pipe and reduces the bending degree of the horizontally placed continuous fiber reinforced polyethylene pipe; the setting of the three-dimensional thread groove is adapted to the Kraft clamp structure when the continuous fiber reinforced polyethylene pipe is connected, that is, it is convenient to install the Kraft clamp at the pipe end of the continuous fiber reinforced polyethylene pipe, thereby improving the convenience of connecting the continuous fiber reinforced polyethylene pipe. At the same time, when the continuous fiber reinforced polyethylene pipe needs to be cut, it can be cut along the three-dimensional thread groove. After cutting, the end face of the pipe is flat, which is conducive to sealing the end face of the pipe and connecting with other pipes.

[0017] 4) This technical solution is to set up a Kraft clamp, an adapter, and a continuous fiber reinforced polyethylene pipe. The continuous fiber reinforced polyethylene pipes are connected by the adapter, and then the continuous fiber reinforced polyethylene pipe and the connecting area of ​​the adapter are tightly fixed by the Kraft clamp. The operation is fast, the connection is stable, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention when it is installed; Figure 2 It is a structural schematic diagram of the adaption device in the present invention; Figure 3 It is a schematic diagram of the structure in which a rubber sealing pad is installed in the adapter device of the present invention; Figure 4 This is a schematic diagram of the structure of the continuous fiber reinforced polyethylene pipe in the present invention when it is placed horizontally; Figure 5 This is a schematic diagram of the structure of the continuous fiber reinforced polyethylene pipe in the present invention when it is placed vertically; Among them: 1-adapter, 2-Kraft clamp, 3-continuous fiber reinforced polyethylene tube, 11-outer ring, 12-inner ring, 13-annular groove, 14-rubber sealing gasket, 31-three-dimensional thread groove, 32-reinforcement rib. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. The illustrative embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0020] Embodiment 1: like Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 As shown, a continuous fiber reinforced polyethylene pipe connector comprises an adapter 1, a Kraft clamp 2, and a continuous fiber reinforced polyethylene pipe 3. Two continuous fiber reinforced polyethylene pipes 3 are connected through the adapter 1. The Kraft clamp 2 covers the connection areas at both ends of the adapter 1 which are respectively connected to the two continuous fiber reinforced polyethylene pipes 3 and tightly fixes the connection areas. Both side end faces of the adapter 1 are annular structures. An annular groove 13 is formed between the outer ring 11 of the adapter 1 and the inner ring 12 of the adapter 1. A rubber sealing gasket 14 is installed in the annular groove 13. The rubber sealing gasket 14 is in close contact with the inner surface of the annular groove 13. After the rubber sealing gasket 14 is installed in the annular groove 13, the top height of the inner ring 12 is higher than the top height of the rubber sealing gasket 14.

[0021] At present, composite pipes are increasingly used and are often used in water diversion, water supply, and other scenarios. This embodiment proposes a continuous fiber reinforced polyethylene pipe, i.e., a new type of continuous fiber reinforced polyethylene pipe, and a connector used when connecting the new type of continuous fiber reinforced polyethylene pipes, to solve the problem of loose connection and poor sealing in conventional composite pipes or conventional pipelines, which causes the transported liquid to leak into the pipe body.

[0022] In the connector used for continuous fiber reinforced polyethylene pipe connection in this embodiment, the adapter 1 plays a role in guiding and promoting the tight connection between the composite pipes in the connection of the continuous fiber reinforced polyethylene pipe 3. After the end faces on both sides of the adapter 1 are respectively connected to a continuous fiber reinforced polyethylene pipe 3, the Kraft clamp 2 further tightly fixes the entire connection area.

[0023] The structure of the adapter device 1 itself is a torus structure, and the end faces on both sides have the same structure, and both can be connected to the continuous fiber reinforced polyethylene tube 3 in the same connection manner. The annular groove 13 between the inner ring 12 and the outer ring 11 of the adapter device 1 is mainly used to install the rubber sealing gasket 14. After installation, a clearance fit is formed between the rubber sealing gasket 14 and the annular groove 13, and it is not easy to fall off from the annular groove 13 unless under the action of external force. Among them, the top height of the inner ring 12 is higher than the top height of the rubber sealing gasket 14, that is, after the rubber sealing gasket 14 is installed in the annular groove 13, at this time, the top end face height of the rubber sealing gasket 14 is lower than the top height of the inner ring 12 in the adapter device 1. The depth of the outer ring 11 of the adapter 1 is the same as the depth of the inner ring 12 of the adapter 1, that is, the top plane of the inner ring 12 and the top plane of the outer ring 11 are on the same horizontal plane, and there is no height difference between the two. There is a space area between the upper end face of the rubber sealing gasket 14 and the horizontal plane where the top plane of the inner ring 12 is located. This area is conducive to connection with the end face of the continuous fiber reinforced polyethylene tube 3. After connection, the connecting end face of the continuous fiber reinforced polyethylene tube can be sealed.

[0024] Embodiment 2: This embodiment is further defined on the basis of the embodiment 1, that the ring width of the circular groove 13 is greater than or equal to the wall thickness of the rubber sealing pad 14, and the restriction on the ring width of the circular groove 13 and the wall thickness of the rubber sealing pad 14 is mainly used to enhance the contact stability between the rubber sealing pad 14 and the circular groove 13 after installation, and to prevent the rubber sealing pad 14 from falling from the circular groove 13. The side structures at both ends of the adapter 1 in this embodiment are adapted and connected with the continuous fiber reinforced polyethylene pipe 3. That is, the end surface structures on both sides of the adapter 1 are the same, and the continuous fiber reinforced polyethylene pipe is detachably connected in the same way.

[0025] Embodiment 3: Based on the above embodiments, the present embodiment further defines that the surface of the continuous fiber reinforced polyethylene tube 3 is a three-dimensional thread groove 31 which is perpendicular to the longitudinal axis of the continuous fiber reinforced polyethylene tube 3 and is continuously distributed in parallel. The three-dimensional thread groove 31 is formed by molding and compounding continuous inorganic non-metallic fibers and thermoplastic materials, and a reinforcing rib 32 is formed at the mold closing position. The reinforcing rib 32 is parallel to the central axis of the continuous fiber reinforced polyethylene tube 3 and is continuous along the longitudinal axis of the continuous fiber reinforced polyethylene tube 3.

[0026] After the continuous fiber reinforced polyethylene tube 3 is sealed and connected to the adapter 1, the stability of the connection is further enhanced, and the outer surface of the connection area is tightly fixed by a Kraft clamp 2. Among them, the continuous fiber reinforced polyethylene tube targeted in this embodiment is a new type of continuous fiber reinforced polyethylene tube, and the shape of the three-dimensional thread groove 31 distributed on the surface is any one of a triangle, a trapezoid, and a rectangle. There are multiple three-dimensional thread grooves 31, which are distributed in parallel and continuously, surrounding the outer surface of the continuous fiber reinforced polyethylene tube 3, and the surrounding direction is perpendicular to the longitudinal axis of the continuous fiber reinforced polyethylene tube 3. The three-dimensional thread groove 31 is formed by continuous inorganic non-metallic fiber and thermoplastic material at 150℃-300℃, and a reinforcing rib 32 is formed at the mold closing point. Among them, the continuous inorganic non-metallic fiber can be selected as any one of continuous glass fiber, continuous basalt fiber, continuous carbon fiber, and continuous aramid fiber, and the thermoplastic material can be selected as any one of PE, PP, and PA. The material of the reinforcing rib 32 is the same as that of the three-dimensional thread groove 31. The reinforcing ribs 32 are parallel to the central axis of the continuous fiber reinforced polyethylene pipe. The three-dimensional thread grooves 31 and the reinforcing ribs 32 effectively enhance the rigidity and stiffness of the continuous fiber reinforced polyethylene pipe and reduce the bending of the continuous fiber reinforced polyethylene pipe when placed horizontally.

[0027] Among them, the depth of the three-dimensional thread groove 31 is 2mm-20mm, and the width of the three-dimensional thread groove 31 is 5mm-50mm. The width and depth of the three-dimensional thread groove 31 are limited, which is mainly beneficial to the tight connection between the continuous fiber reinforced polyethylene tube 3 and the Kraft clamp 2, as well as the adaptability of the structure. The Kraft clamp 2 fixes the connection area between the continuous fiber reinforced polyethylene tube and the adapter 1. The metal belt of the Kraft clamp 2 is in close contact with the surface of multiple three-dimensional thread grooves 31, and the structure is annular, with a larger contact surface, which is beneficial to the tight fixing effect of the Kraft clamp 2 on the connection area. And when it is necessary to cut the continuous fiber reinforced polyethylene tube 3, it can be cut along the three-dimensional thread groove 31. After cutting, the end face of the pipe is flat, which is beneficial to the sealing of the end face of the pipe and the connection with other pipes.

[0028] Among them, the number of the reinforcing ribs 32 can be selected to be greater than or equal to one. It can also be selected that the number of the reinforcing ribs 32 is two and they are symmetrically distributed with the central axis of the continuous fiber reinforced polyethylene tube 3 as the symmetry axis. The provision of the reinforcing ribs 32 can further enhance the rigidity and stiffness of the continuous fiber reinforced polyethylene tube and reduce the bending degree of the continuous fiber reinforced polyethylene tube when placed horizontally.

[0029] Embodiment 4: This embodiment provides an operating method of the continuous fiber reinforced polyethylene pipe connector described in the above embodiment, comprising the following steps: 1) Install the rubber sealing pad 14 in the annular groove 13 of the adapter 1, then insert one end of the adapter 1 into a continuous fiber reinforced polyethylene tube 3, guide the connecting end face of the continuous fiber reinforced polyethylene tube 3 into the annular groove 13, and under the guiding and directional action of the adapter 1, the annular groove 13 and the rubber sealing pad 14 installed in the annular groove 13 form a clearance fit with the contact end of the continuous fiber reinforced polyethylene tube 3, thereby completing the connection between one end of the adapter 1 and the continuous fiber reinforced polyethylene tube 3; 2) Repeat step 1) to complete the connection between the other end of the adapter 1 and another continuous fiber reinforced polyethylene tube 3, and then place the Kraft clamp 2 in the connection area between the two continuous fiber reinforced polyethylene tubes 3 and the adapter 1, the Kraft clamp 2 covers the connection area, the metal belt of the Kraft clamp 2 is structurally adapted to the three-dimensional thread groove 31 of the continuous fiber reinforced polyethylene tube 3, tighten the fastening screws of the Kraft clamp 2, and complete the connection between the continuous fiber reinforced polyethylene tube connector and the two continuous fiber reinforced polyethylene tubes.

[0030] The optimization of the continuous fiber reinforced polyethylene pipe connector makes the operation simple and the installation efficiency fast during the specific installation of the continuous fiber reinforced polyethylene pipe connection, and the sealing effect of the continuous fiber reinforced polyethylene pipe after installation is good.

[0031] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A continuous fiber reinforced polyethylene pipe connector, characterized in that: The invention comprises an adaptor (1), a Kraft clamp (2), and a continuous fiber reinforced polyethylene tube (3), wherein two continuous fiber reinforced polyethylene tubes (3) are connected via the adaptor (1), the Kraft clamp (2) covers the connection areas at both ends of the adaptor (1) respectively connected to the two continuous fiber reinforced polyethylene tubes (3) and tightly fixes the connection areas, both end faces of the adaptor (1) are annular structures, an annular groove (13) is formed between an outer annular ring (11) of the adaptor (1) and an inner annular ring (12) of the adaptor (1), a rubber sealing pad (14) is installed in the annular groove (13), the rubber sealing pad (14) is in tight contact with the inner surface of the annular groove (13), and after the rubber sealing pad (14) is installed in the annular groove (13), the top height of the inner annular ring (12) is higher than the top height of the rubber sealing pad (14).

2. The continuous fiber reinforced polyethylene pipe connector according to claim 1, characterized in that: The depth of the outer ring (11) of the adapter device (1) is the same as the depth of the inner ring (12) of the adapter device (1).

3. The continuous fiber reinforced polyethylene pipe connector according to claim 2, characterized in that: The width of the annular groove (13) is greater than or equal to the wall thickness of the rubber sealing pad (14).

4. The continuous fiber reinforced polyethylene pipe connector according to claim 3, characterized in that: The side structures at both ends of the adapter device (1) are adaptably connected to the continuous fiber reinforced polyethylene pipe (3).

5. A continuous fiber reinforced polyethylene pipe connector according to any one of claims 1 to 4, characterized in that: The surface of the continuous fiber reinforced polyethylene tube (3) is provided with three-dimensional thread grooves (31) which are perpendicular to the longitudinal axis of the continuous fiber reinforced polyethylene tube (3) and are distributed in parallel and continuously. The three-dimensional thread grooves (31) are formed by molding and compounding continuous inorganic non-metallic fibers and thermoplastic materials, and reinforcing ribs (32) are formed at the mold closing position. The reinforcing ribs (32) are parallel to the central axis of the continuous fiber reinforced polyethylene tube (3) and are continuous along the longitudinal axis of the continuous fiber reinforced polyethylene tube (3).

6. The continuous fiber reinforced polyethylene pipe connector according to claim 5, characterized in that: The shape of the three-dimensional thread groove (31) is any one of a triangle, a trapezoid, and a rectangle.

7. The continuous fiber reinforced polyethylene pipe connector according to claim 6, characterized in that: The depth of the three-dimensional thread groove (31) is 2 mm to 20 mm, and the width of the three-dimensional thread groove (31) is 5 mm to 50 mm.

8. The continuous fiber reinforced polyethylene pipe connector according to claim 6, characterized in that: The number of the reinforcing ribs (32) is greater than or equal to one.

9. The continuous fiber reinforced polyethylene pipe connector according to claim 8, characterized in that: The number of the reinforcing ribs (32) is two and they are symmetrically distributed with the central axis of the continuous fiber reinforced polyethylene pipe (3) as the axis of symmetry.

10. An operating method of the continuous fiber reinforced polyethylene pipe connector according to any one of claims 1 to 9, characterized in that: The following steps are included: 1) installing a rubber sealing pad (14) in the annular groove (13) of the adapter device (1), then inserting one end of the adapter device (1) into the interior of a continuous fiber reinforced polyethylene tube (3), guiding the connecting end face of the continuous fiber reinforced polyethylene tube (3) into the annular groove (13), and under the guiding and directional action of the adapter device (1), the annular groove (13) and the rubber sealing pad (14) installed in the annular groove (13) and the contact end of the continuous fiber reinforced polyethylene tube (3) form a clearance fit, thereby completing the connection between one end of the adapter device (1) and the continuous fiber reinforced polyethylene tube (3); 2) Repeat step 1) to complete the connection between the other end of the adapter (1) and another continuous fiber reinforced polyethylene tube (3), then place the Kraft clamp (2) in the connection area between the two continuous fiber reinforced polyethylene tubes (3) and the adapter (1), the Kraft clamp (2) covers the connection area, the metal belt of the Kraft clamp (2) is adapted to the three-dimensional thread groove (31) structure of the continuous fiber reinforced polyethylene tube (3), and tighten the fastening screws of the Kraft clamp (2) to complete the connection between the continuous fiber reinforced polyethylene tube connector and the two continuous fiber reinforced polyethylene tubes.

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