High-strength plum blossom pipe, preparation method and device

Abstract

The invention discloses a high-strength plum-blossom-shaped pipe and a preparation method and device.The high-strength plum-blossom-shaped pipe comprises reinforcing inner pipes, an outer pipe and an anti-permeation blocking layer, the reinforcing inner pipes and the outer pipe are PE pipes, the multiple reinforcing inner pipes are arranged in a different-diameter mode, the multiple reinforcing inner pipes with different diameters are sequentially connected through inner connecting ribs from inside to outside according to the inner diameter size, and the anti-permeation blocking layer is arranged between the outer pipe and the reinforcing inner pipes. Outer connecting ribs are arranged on the outer sides of the multiple different-diameter reinforcing inner pipes, each outer connecting rib is in an arch piece shape and connects every two adjacent reinforcing inner pipes, and the multiple different-diameter reinforcing inner pipes are spliced from inside to outside to form a circular pipe fitting. The diameter of the outer pipe is larger than that of the quasi-circular pipe fitting, the quasi-circular pipe fitting can be wrapped with the outer pipe, and an anti-permeation blocking layer is arranged between the outer pipe and the quasi-circular pipe fitting. The plum-blossom-shaped pipe is prepared from the reducing reinforced inner pipe, the reducing reinforced inner pipe can meet the threading requirements of cables of different sizes or specifications, the whole plum-blossom-shaped pipe is simple in structure, and water vapor permeation can be avoided.

Description

Technical Field

[0001] The invention relates to the field of plum blossom pipes, in particular to high-strength plum blossom pipes, and a preparation method and a device. Background Art

[0002] The plum blossom tube is a plum blossom-shaped communication tube made of PVC particles as the main material and other formulas through a unique mold. It is also called a honeycomb tube. There are three types: five-hole, seven-hole and nine-hole. The inner wall of this tube is smooth and can be directly passed through the optical cable, which can save labor time. It has a reasonable structure, high use value and long service life. It is mainly used for communication cable sheath tubes.

[0003] At present, most of the porous plum blossom tubes are of the same diameter, that is, each tube hole of the plum blossom tube has the same diameter, which results in the need to configure additional large-sized plum blossom tubes when threading some thicker or larger cables, which makes cable laying more troublesome; and the existing plum blossom tubes generally have low strength, resulting in poor compression resistance, impact resistance, tensile strength and water permeability. Based on this, the present invention proposes a high-strength plum blossom tube, a preparation method and a device. The plum blossom tube is prepared by a reinforced inner tube of different diameters, and the reinforced inner tube of different diameters can meet the threading requirements of cables of different sizes or specifications. In order to further improve the waterproof permeability of the plum blossom tube, the plum blossom tube is protected and water-blocked by an outer tube on the one hand, and on the other hand, even when water seeps into the outer tube, it can still play a water-blocking / barrier effect through the anti-penetration barrier layer to avoid water vapor penetration; the entire plum blossom tube has a simple structure. Summary of the invention

[0004] The object of the present invention is to provide a high-strength plum blossom tube, a preparation method and a device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-strength plum blossom tube, comprising a reinforced inner tube, an outer tube and an anti-permeation barrier layer, wherein the reinforced inner tube and the outer tube are both PE pipes, a plurality of reinforced inner tubes are provided and are arranged with different diameters, a plurality of reinforced inner tubes with different diameters are connected in sequence from the inside to the outside along the inner diameter size by internal connecting ribs, an external connecting rib is arranged on the outside of a plurality of reinforced inner tubes with different diameters, the external connecting rib is in the shape of an arch plate and connects two adjacent reinforced inner tubes, a plurality of reinforced inner tubes with different diameters are spliced ​​from the inside to the outside to form a type of circular tube fitting; the diameter of the outer tube is larger than the diameter of the type of circular tube fitting, the outer tube can be coated on the outside of the type of circular tube fitting, and an anti-permeation barrier layer is arranged between the outer tube and the type of circular tube fitting.

[0006] Preferably, the reinforced inner tube is made by spraying a common PE tube with an adhesion promoter, curing the tube, and then spraying a resin coating.

[0007] Preferably, the inner side of the connection area between the external connecting rib and the plurality of inner tubes is filled with a reinforcement layer, and the reinforcement layer is formed by curing a resin coating.

[0008] Preferably, the anti-permeation barrier layer comprises an inner base layer and an anti-permeation layer, wherein a dense water-blocking ring sleeve made of a polymer material is provided between the inner base layer and the anti-permeation layer, and the inner base layer is filled with high-density polyethylene.

[0009] Preferably, the anti-permeation layer includes 20-29 parts of epoxy resin, 3-6 parts of polyolefin elastomer, 1-3 parts of regenerated silica, 0.3-0.7 parts of amine curing agent, 0.05-0.1 parts of toughening agent, 0.1-0.4 parts of paraffin, 0.1-0.5 parts of modified composite fiber, and 0.07-0.2 parts of filling micropowder.

[0010] Preferably, the toughening agent is any one of carboxymethyl cellulose, polyolefin elastomer or ethylene propylene diene monomer rubber or a mixture of any two thereof, and the amine curing agent is any one of phenolic amines or polyether amines or a mixture of any two thereof.

[0011] Preferably, the polyolefin elastomer is prepared by copolymerization of ethylene and octene, and the modified composite fiber is silicon carbide fiber.

[0012] The present invention also provides a method for preparing the high-strength plum blossom tube, comprising the steps of:

[0013] Step 1: Prepare a reinforced inner tube by spraying a plurality of ordinary PE pipes of different diameters with an adhesion promoter and curing them, and then spraying a resin coating on them, and then drying and curing them to obtain the reinforced inner tube;

[0014] Step 2: Connect multiple reinforced inner tubes with different diameters through inner connecting ribs and outer connecting ribs, and fill the inner side of the connecting area between the outer connecting ribs and the multiple inner tubes with resin coating to form a quasi-circular tube after curing;

[0015] Step 3: Wrap the outer tube around the circular tube, and fill the gap between the outer tube and the circular tube with an anti-permeability barrier layer, and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

[0016] Preferably, the anti-permeability barrier layer is constructed in two steps, wherein the first step is to bond the inner base layer to the outside of the circular tube, and to set a water-blocking ring sleeve on the inner base layer, and the second step is to fill the anti-permeability layer outside the water-blocking ring sleeve.

[0017] The present invention also provides a preparation device for the above-mentioned high-strength plum blossom pipe, including a PR extrusion mold for preparing inner pipes and outer pipes, an adhesion promoter spraying and fixing machine for preparing reinforced inner pipes, a resin coating filling machine for connecting external connecting ribs with multiple inner pipes, an inner base bonding machine for the construction of an anti-penetration barrier layer, an anti-penetration layer filling machine, and a curing machine.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The plum blossom tube of the present invention is prepared by adopting a reinforced inner tube with different diameters, which can meet the threading requirements of cables of different sizes or specifications. In order to further improve the waterproof permeability of the plum blossom tube, the plum blossom tube is protected and water-blocked by an outer tube on the one hand, and on the other hand, even when water seepage occurs in the outer tube, the anti-penetration barrier layer can also play a water-blocking / barrier effect to avoid water vapor penetration; the entire plum blossom tube has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a high-strength plum blossom tube in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the planar structure of a high-strength plum blossom tube in an embodiment of the present invention.

[0022] In the figure: 1. Strengthened inner tube; 2. Outer tube; 3. Anti-penetration barrier layer; 4. Internal connecting ribs; 5. Reinforcement layer; 6. External connecting ribs. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-2The present invention provides a technical solution: a high-strength plum blossom tube, comprising a reinforced inner tube 1, an outer tube 2 and an anti-permeation barrier layer 3, wherein the reinforced inner tube 1 and the outer tube 2 are both PE pipes, a plurality of reinforced inner tubes 1 are provided and are arranged with different diameters, a plurality of reinforced inner tubes 1 with different diameters are connected in sequence from the inside to the outside along the inner diameter size by internal connecting ribs 4, an external connecting rib 6 is arranged on the outside of the plurality of reinforced inner tubes 1 with different diameters, the external connecting rib 6 is in the shape of an arch plate and connects two adjacent reinforced inner tubes 1, and a plurality of reinforced inner tubes 1 with different diameters are spliced ​​from the inside to the outside to form a type of circular tube fitting; the diameter of the outer tube 2 is larger than the diameter of the type of circular tube fitting, the outer tube 2 can be coated on the outside of the type of circular tube fitting, and an anti-permeation barrier layer 3 is arranged between the outer tube 2 and the type of circular tube fitting.

[0027] In this embodiment, the reinforced inner tube 1 is made of an ordinary PE tube which is sprayed with an adhesion promoter, cured, and then sprayed with a resin coating.

[0028] In this embodiment, the inner side of the connection area between the outer connecting rib 6 and the plurality of inner tubes is filled with a reinforcement layer 5, and the reinforcement layer 5 is formed by curing a resin coating.

[0029] In this embodiment, the anti-permeation barrier layer 3 includes an inner base layer and an anti-permeation layer, wherein a dense water-blocking ring sleeve made of a polymer material is provided between the inner base layer and the anti-permeation layer, and the inner base layer is filled with high-density polyethylene.

[0030] This embodiment also provides a method for preparing the high-strength plum blossom tube, comprising the steps of:

[0031] Step 1: Prepare a reinforced inner tube 1 by spraying a plurality of common PE tubes of different diameters with an adhesion promoter and curing them, and then spraying a resin coating on them, and then drying and curing them to obtain a reinforced inner tube 1;

[0032] Step 2: Connect multiple reinforced inner tubes 1 with different diameters through inner connecting ribs 4 and outer connecting ribs 6, and fill the inner side of the connecting area between the outer connecting ribs 6 and the multiple inner tubes with resin coating to form a quasi-circular tube after curing;

[0033] Step 3: Wrap the outer tube 2 outside the circular tube, and fill the gap between the outer tube 2 and the circular tube with an anti-permeability barrier layer 3, and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

[0034] In this embodiment, the anti-permeability barrier layer 3 in step 3 is constructed in two steps, wherein the first step is to glue the inner base layer to the outside of the circular tube, and set a water-blocking ring sleeve on the inner base layer, and the second step is to fill the anti-permeability layer outside the water-blocking ring sleeve.

[0035] The preparation device of the high-strength plum blossom pipe in this embodiment includes a PR extrusion mold for preparing an inner pipe and an outer pipe 2, an adhesion promoter spraying and fixing machine for preparing a reinforced inner pipe 1, a resin coating filling machine for connecting the external connecting ribs 6 with multiple inner pipes, an inner base bonding machine for the construction of the anti-penetration barrier layer 3, an anti-penetration layer filling machine, and a curing machine.

[0036] The plum blossom tube of the above embodiment is composed of a reinforced inner tube 1, an outer tube 2 and an anti-permeation barrier layer 3, wherein the reinforced inner tube 1 is made of an ordinary PE tube after treatment, and has higher strength. It is connected in sequence through multiple reinforced inner tubes 1 with different diameters. The reinforced inner tubes 1 with different diameters can meet the threading requirements of cables of different sizes or specifications. In order to further improve the waterproof permeability of the plum blossom tube, the plum blossom tube is protected and water-blocked by the outer tube 2 on the one hand, and on the other hand, even when water seepage occurs in the outer tube, the anti-permeation barrier layer 3 can still play a water-blocking / barrier effect to avoid water vapor penetration; the entire plum blossom tube has a simple structure.

[0037] Embodiment 1:

[0038] Step 1: Prepare a reinforced inner tube 1 by spraying a plurality of common PE tubes of different diameters with an adhesion promoter and curing them, and then spraying a resin coating on them, and then drying and curing them to obtain a reinforced inner tube 1;

[0039] Step 2: Connect multiple reinforced inner tubes 1 with different diameters through inner connecting ribs 4 and outer connecting ribs 6, and fill the inner side of the connecting area between the outer connecting ribs 6 and the multiple inner tubes with resin coating to form a quasi-circular tube after curing;

[0040] Step 3: Wrap the outer tube 2 outside the circular tube, and fill the gap between the outer tube 2 and the circular tube with an anti-permeability barrier layer 3, and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

[0041] In this embodiment, the anti-permeation layer includes 22 parts of epoxy resin, 4 parts of polyolefin elastomer, 1 part of regenerated silica, 0.3 parts of amine curing agent, 0.07 parts of toughening agent, 0.1 parts of paraffin, 0.2 parts of modified composite fiber, and 0.09 parts of filling micropowder by weight.

[0042] In this embodiment, the toughening agent is carboxymethyl cellulose, and the amine curing agent is phenolic amine.

[0043] In this embodiment, the polyolefin elastomer is prepared by copolymerization of ethylene and octene, and the modified composite fiber is silicon carbide fiber.

[0044] Embodiment 2:

[0045] Step 1: Prepare a reinforced inner tube 1 by spraying a plurality of common PE tubes of different diameters with an adhesion promoter and curing them, and then spraying a resin coating on them, and then drying and curing them to obtain a reinforced inner tube 1;

[0046] Step 2: Connect multiple reinforced inner tubes 1 with different diameters through inner connecting ribs 4 and outer connecting ribs 6, and fill the inner side of the connecting area between the outer connecting ribs 6 and the multiple inner tubes with resin coating to form a quasi-circular tube after curing;

[0047] Step 3: Wrap the outer tube 2 outside the circular tube, and fill the gap between the outer tube 2 and the circular tube with an anti-permeability barrier layer 3, and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

[0048] In this embodiment, the diameter of the outer tube 2 is larger than the diameter of the circular tube-like fitting. The outer tube 2 can be wrapped around the outside of the circular tube-like fitting. An anti-permeation barrier layer 3 is arranged between the outer tube 2 and the circular tube-like fitting. The anti-permeation layer includes 25 parts of epoxy resin, 3 parts of polyolefin elastomer, 2 parts of regenerated silica, 0.7 parts of amine curing agent, 0.08 parts of toughening agent, 0.2 parts of paraffin, 0.4 parts of modified composite fiber, and 0.1 parts of filling micropowder by weight.

[0049] In this embodiment, the toughening agent is a mixture of carboxymethyl cellulose and polyolefin elastomer, and the amine curing agent is phenolic amine.

[0050] In this embodiment, the polyolefin elastomer is prepared by copolymerization of ethylene and octene, and the modified composite fiber is silicon carbide fiber.

[0051] Embodiment 3:

[0052] Step 1: Prepare a reinforced inner tube 1 by spraying a plurality of common PE tubes of different diameters with an adhesion promoter and curing them, and then spraying a resin coating on them, and then drying and curing them to obtain a reinforced inner tube 1;

[0053] Step 2: Connect multiple reinforced inner tubes 1 with different diameters through inner connecting ribs 4 and outer connecting ribs 6, and fill the inner side of the connecting area between the outer connecting ribs 6 and the multiple inner tubes with resin coating to form a quasi-circular tube after curing;

[0054] Step 3: Wrap the outer tube 2 outside the circular tube, and fill the gap between the outer tube 2 and the circular tube with an anti-permeability barrier layer 3, and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

[0055] In this embodiment, the diameter of the outer tube 2 is larger than the diameter of the circular tube-like fitting. The outer tube 2 can be wrapped around the outside of the circular tube-like fitting. An anti-permeation barrier layer 3 is arranged between the outer tube 2 and the circular tube-like fitting. The anti-permeation layer includes 27 parts of epoxy resin, 5 parts of polyolefin elastomer, 3 parts of regenerated silica, 0.6 parts of amine curing agent, 0.08 parts of toughening agent, 0.3 parts of paraffin, 0.4 parts of modified composite fiber, and 0.11 parts of filling micropowder.

[0056] In this embodiment, the toughening agent is a mixture of polyolefin elastomer or EPDM rubber, and the amine curing agent is a mixture of phenolic amine and polyether amine.

[0057] In this embodiment, the polyolefin elastomer is prepared by copolymerization of ethylene and octene, and the modified composite fiber is silicon carbide fiber.

[0058] According to the national standards YD / T 841.5-2008 and CJ / T358-2019, the physical mechanics and water permeability of the high-strength plum blossom tubes prepared in Examples 1-3 were compared, and the results are as follows:

[0059]

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High strength plum blossom tube, characterized by: The invention comprises a reinforced inner tube (1), an outer tube (2) and an anti-permeation barrier layer (3), wherein the reinforced inner tube (1) and the outer tube (2) are both made of PE pipes, a plurality of reinforced inner tubes (1) are provided and are arranged with different diameters, the plurality of reinforced inner tubes (1) with different diameters are connected in sequence from the inside to the outside along the inner diameter size through internal connecting ribs (4), external connecting ribs (6) are arranged on the outside of the plurality of reinforced inner tubes (1) with different diameters, the external connecting ribs (6) are in the shape of an arch plate and connect two adjacent reinforced inner tubes (1), the plurality of reinforced inner tubes (1) with different diameters are spliced ​​from the inside to the outside to form a type of circular tube fitting; the diameter of the outer tube (2) is larger than the diameter of the type of circular tube fitting, the outer tube (2) can be covered on the outside of the type of circular tube fitting, and the anti-permeation barrier layer (3) is arranged between the outer tube (2) and the type of circular tube fitting.

2. The high-strength plum blossom tube according to claim 1, characterized in that: The reinforced inner tube (1) is made by spraying an ordinary PE tube with an adhesion promoter, curing it, and then spraying a resin coating.

3. The high-strength plum blossom tube according to claim 1, characterized in that: The inner side of the connection area between the external connection rib (6) and the plurality of inner tubes is filled with a reinforcement layer (5), and the reinforcement layer (5) is formed by curing a resin coating.

4. The high-strength plum blossom tube according to claim 1, characterized in that: The anti-permeation barrier layer (3) comprises an inner base layer and an anti-permeation layer, wherein a dense water-blocking ring sleeve made of a polymer material is arranged between the inner base layer and the anti-permeation layer, and the inner base layer is filled with high-density polyethylene.

5. The high-strength plum blossom tube according to claim 1, characterized in that: The anti-permeation layer comprises, by weight, 20-29 parts of epoxy resin, 3-6 parts of polyolefin elastomer, 1-3 parts of regenerated silica, 0.3-0.7 parts of amine curing agent, 0.05-0.1 parts of toughening agent, 0.1-0.4 parts of paraffin, 0.1-0.5 parts of modified composite fiber and 0.07-0.2 parts of filling micropowder.

6. The high-strength plum blossom tube according to claim 5, characterized in that: The toughening agent is any one of carboxymethyl cellulose, polyolefin elastomer or ethylene propylene diene monomer rubber or a mixture of any two thereof, and the amine curing agent is any one of phenolic amine or polyether amine or a mixture of any two thereof.

7. The high-strength plum blossom tube according to claim 5, characterized in that: The polyolefin elastomer is prepared by copolymerization of ethylene and octene, and the modified composite fiber is silicon carbide fiber.

8. A method for preparing a high-strength plum blossom tube, characterized in that: Includes steps: Step 1: preparing a reinforced inner tube (1), spraying a plurality of common PE tubes of different diameters with an adhesion promoter, curing the tubes, and then spraying a resin coating on the tubes, and drying and curing the tubes to obtain a reinforced inner tube (1); Step 2: Connecting a plurality of reinforced inner tubes (1) with different diameters through inner connecting ribs (4) and outer connecting ribs (6), and filling the inner side of the connecting area between the outer connecting ribs (6) and the plurality of inner tubes with resin coating, and forming a quasi-circular tube after curing; Step 3: Wrap the outer tube (2) around the quasi-circular tube, and fill the gap between the outer tube (2) and the quasi-circular tube with an anti-permeability barrier layer (3), and complete the preparation of the high-strength plum blossom tube after the anti-permeability layer is cured.

9. The method for preparing a high-strength plum blossom tube according to claim 8, characterized in that: The anti-permeability barrier layer (3) is constructed in two steps, wherein the first step is to glue the inner base layer to the outside of the circular tube, and to set a water-blocking ring sleeve on the inner base layer, and the second step is to fill the anti-permeability layer outside the water-blocking ring sleeve.

10. A device for preparing high-strength plum blossom tube, characterized in that: The preparation device comprises a PR extrusion die for preparing an inner tube and an outer tube (2), an adhesion promoter spraying and fixing machine for preparing a reinforced inner tube (1), a resin coating filling machine for connecting an external connecting rib (6) with a plurality of inner tubes, an inner base bonding machine for the construction of an anti-penetration barrier layer (3), an anti-penetration layer filling machine, and a curing machine.

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