PVC electric power pipe with good flexibility

Abstract

The utility model discloses a PVC electric power pipe with good flexibility, which comprises a PVC outer layer, a plurality of PVC inner layers are arranged in the PVC outer layer, the inner ring of the PVC outer layer is fixedly connected with a flexible rubber layer, the inner ring of the flexible rubber layer is fixedly connected with a flexible composite layer, the inner part of the flexible composite layer is provided with an insulating inner layer, and the inner part of the insulating inner layer is provided with an insulating outer layer. The flexible composite layer comprises a glass fiber woven mesh and a metal reinforcing mesh, the inner ring of the insulating inner layer is fixedly connected with a plurality of strip-shaped fixing blocks, and the side faces, close to each other, of the strip-shaped fixing blocks are fixedly connected with the side faces, away from each other, of the PVC inner layers respectively. The PVC electric power pipe with the good flexibility has certain flexibility and high strength, it is guaranteed that the electric power pipe is not prone to deformation and damage while the flexibility of the electric power pipe is enhanced, the electric power pipe is more convenient to bend and lay, the toughness and the bending degree of the electric power pipe do not need to be considered in the laying process, the electric power pipe is more convenient to connect, and the laying construction speed of the PVC electric power pipe is increased.

Description

Technical Field

[0001] This utility model relates to the field of PVC power pipes, and in particular to a flexible PVC power pipe. Background Technology

[0002] PVC power pipes, also known as polyvinyl chloride insulated control cable protection pipes, are thermoplastic resin pipes made primarily of polyvinyl chloride with added stabilizers, lubricants, and other additives. They are not easily corroded by most chemicals and can be used for a long time in various soil conditions. They also have excellent flame retardancy: PVC materials have superior flame retardancy and smoke density index, effectively preventing the spread of fire.

[0003] PVC power pipes, as modified PVC pipes used as sheathing pipes for power cables, can replace steel pipes and asbestos cement pipes. However, current PVC power pipes have high hardness, and their own toughness and bending degree need to be considered when laying them. Insufficient toughness can easily lead to inconvenience in connection, which in turn brings inconvenience to the laying of PVC power pipes. To address this issue, we propose a PVC power pipe with good flexibility. Utility Model Content

[0004] The purpose of this invention is to provide a flexible PVC power pipe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A flexible PVC power pipe includes a PVC outer layer, a plurality of PVC inner layers inside the PVC outer layer, a flexible rubber layer fixedly connected to the inner ring of the PVC outer layer, a flexible composite layer fixedly connected to the inner ring of the flexible rubber layer, an insulating inner layer inside the flexible composite layer, and the flexible composite layer including a glass fiber braided mesh and a metal reinforcing mesh.

[0007] In a further embodiment, the inner ring of the insulating inner layer is fixedly connected with a plurality of strip-shaped fixing blocks, and the side of each strip-shaped fixing block that is close to each other is fixedly connected to the side of each PVC inner layer that is far from each other.

[0008] In a further embodiment, a shielding layer is fixedly connected to the outer surface of the insulating inner layer, and the outer surface of the shielding layer is fixedly connected to the inner ring of the flexible composite layer.

[0009] In a further embodiment, the inner ring of the glass fiber woven mesh is fixedly connected to the outer surface of the metal reinforcing mesh, and both the glass fiber woven mesh and the metal reinforcing mesh are reinforced structures formed by weaving.

[0010] In a further embodiment, the outer surface of the PVC outer layer is provided with a plurality of annular anti-slip protrusions, and both the PVC outer layer and the PVC inner layer are made of the same material.

[0011] In a further embodiment, the insulating inner layer is made of rubber, and the shielding layer is made of thin tin foil.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a flexible rubber layer inside the PVC outer layer to provide good flexibility, allowing the pipe to have a certain buffer deformation space when subjected to external bending forces. A flexible composite layer is formed by fiberglass woven mesh and metal reinforcing mesh, providing both flexibility and high strength. While enhancing the pipe's flexibility, it also ensures that the pipe is not easily deformed or damaged, making it easier to lay in bends. During laying, there is no need to consider its own toughness or degree of bending, making connection easier and increasing the construction speed of PVC power pipe laying. Attached Figure Description

[0014] Figure 1 A three-dimensional structural schematic diagram of a flexible PVC power pipe (front view).

[0015] Figure 2 A three-dimensional structural schematic diagram of a side view of a flexible PVC power conduit;

[0016] Figure 3 A partial sectional view of the outer PVC layer in a flexible PVC power conduit.

[0017] Figure 4 This is a partial sectional view of the front view of the flexible composite layer in a flexible PVC power pipe.

[0018] In the diagram: 1. PVC outer layer; 2. PVC inner layer; 3. Flexible rubber layer; 4. Flexible composite layer; 401. Fiberglass woven mesh; 402. Metal reinforcement mesh; 5. Shielding layer; 6. Insulating inner layer; 7. Annular anti-slip protrusions; 8. Strip fixing block. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 In this utility model, a flexible PVC power pipe includes a PVC outer layer 1, with multiple PVC inner layers 2 inside the PVC outer layer 1. A flexible rubber layer 3 is fixedly connected to the inner ring of the PVC outer layer 1, and a flexible composite layer 4 is fixedly connected to the inner ring of the flexible rubber layer 3. An insulating inner layer 6 is provided inside the flexible composite layer 4. The flexible composite layer 4 includes a glass fiber braided mesh 401 and a metal reinforcing mesh 402. Through the flexible composite layer 4, it can have a certain degree of flexibility and high strength, and while enhancing the flexibility of the pipe, it ensures that the pipe is not easily deformed or damaged, making it more convenient to bend and lay. The insulating inner layer 6 can effectively isolate the internal power cable from the external conductive connection, and has a certain insulation effect.

[0023] In a further embodiment, the inner ring of the insulating inner layer 6 is fixedly connected with a plurality of strip-shaped fixing blocks 8. The side of each strip-shaped fixing block 8 that is close to each other is fixedly connected to the side of each PVC inner layer 2 that is far away from each other. The outer surface of the insulating inner layer 6 is fixedly connected with a shielding layer 5. The outer surface of the shielding layer 5 is fixedly connected to the inner ring of the flexible composite layer 4. By setting the strip-shaped fixing blocks 8, the insulating inner layer 6 can be connected and fixed with the plurality of PVC inner layers 2, which plays a role in positioning the PVC inner layers 2. By setting the shielding layer 5, the influence of external electromagnetic fields on the current signal transmitted by the internal power cable can be reduced.

[0024] In a further embodiment, the inner ring of the fiberglass braided mesh 401 is fixedly connected to the outer surface of the metal reinforcing mesh 402. Both the fiberglass braided mesh 401 and the metal reinforcing mesh 402 are reinforced structures formed by weaving. The outer surface of the PVC outer layer 1 is provided with multiple annular anti-slip protrusions 7. The PVC outer layer 1 and the PVC inner layer 2 are made of the same material. The insulating inner layer 6 is made of rubber, and the shielding layer 5 is made of thin tin foil. Through the cooperation of the fiberglass braided mesh 401 and the metal reinforcing mesh 402, it has good flexibility, which can provide a certain buffer deformation space when the pipe is bent by external force, thereby enhancing the overall flexibility. The annular anti-slip protrusions 7 can make the surface of the power pipe have a certain anti-slip performance, making it convenient to pick up and lay.

[0025] The working principle of this utility model is as follows: First, the cable is taken out and inserted into the interior of multiple PVC inner layers 2. Then, the insulating inner layer 6 can effectively isolate the internal power cable from the external conductive connection, while the shielding layer 5 can reduce the influence of the external electromagnetic field on the current signal transmitted by the internal power cable. Then, the flexible rubber layer 3 and the flexible composite layer 4 can make the power pipe flexible, which makes it convenient to bend, lay and connect the power pipe.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flexible PVC electrical conduit characterized by: It includes a PVC outer layer (1), and a plurality of PVC inner layers (2) are provided inside the PVC outer layer (1). A flexible rubber layer (3) is fixedly connected to the inner ring of the PVC outer layer (1). A flexible composite layer (4) is fixedly connected to the inner ring of the flexible rubber layer (3). An insulating inner layer (6) is provided inside the flexible composite layer (4). The flexible composite layer (4) includes a glass fiber woven mesh (401) and a metal reinforcing mesh (402).

2. A flexible PVC power tube as claimed in claim 1, wherein: The inner ring of the insulating inner layer (6) is fixedly connected with a plurality of strip-shaped fixing blocks (8), and the side of each strip-shaped fixing block (8) that is close to each other is fixedly connected to the side of each PVC inner layer (2) that is far away from each other.

3. A flexible PVC power tube as claimed in claim 1, wherein: The outer surface of the insulating inner layer (6) is fixedly connected to the shielding layer (5), and the outer surface of the shielding layer (5) is fixedly connected to the inner ring of the flexible composite layer (4).

4. A flexible PVC power tube as claimed in claim 1, wherein: The inner ring of the glass fiber woven mesh (401) is fixedly connected to the outer surface of the metal reinforcing mesh (402). Both the glass fiber woven mesh (401) and the metal reinforcing mesh (402) are reinforced structures formed by weaving.

5. A flexible PVC electrical conduit as claimed in claim 1, wherein: The outer surface of the PVC outer layer (1) is provided with multiple annular anti-slip protrusions (7), and both the PVC outer layer (1) and the PVC inner layer (2) are made of the same material.

6. A flexible PVC electrical conduit as claimed in claim 3, wherein: The insulating inner layer (6) is made of rubber, and the shielding layer (5) is made of thin tin foil.

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