Power cable protection tube

Abstract

The utility model discloses a power cable protection tube, comprising a structure main body, the structure main body comprises an external protection tube, an internal slow pressure support body and a cable; the internal pressure-relieving supporting body is of a hollow structure, no less than two arc-shaped pressing parts are arranged in the internal pressure-relieving supporting body, and multiple groups of compression-resistant limiting raised lines and cable mounting parts are arranged outside the internal pressure-relieving supporting body; the surface layer of the cable is provided with a flame-retardant layer which is connected with the surface layer in a coating manner, and the surface layer of the flame-retardant layer is provided with a first braid layer which is connected with the surface layer in a coating manner; a compression-resistant steel belt layer is arranged in the external protection pipe, and a second braid layer is arranged in the compression-resistant steel belt layer; through the arrangement of the internal pressure-relieving supporting body, the internal pressure-relieving supporting body is of a hollow structure, and an arc-shaped pressing piece is arranged in the hollow structure, so that the pressure-relieving and pressure-resisting effects are achieved; and through the arrangement of the compression-resistant steel belt layer, the compression-resistant steel belt layer is formed by spirally winding the steel belt, so that the compression resistance and the torsion resistance of the cable protection pipe are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection tubes, in particular to a power cable protection tube. Background Art

[0002] Cables are commonly used in power construction projects, and most of the cables are laid underground. When laying the cables, cable protection tubes need to be installed on the outside of the cables to prevent the cables from being corroded or interfered with, and to prevent leakage caused by cable damage, greatly improving the service life and safety of the cables.

[0003] When the protective tube is protecting the cable, due to the influence of the use environment, the protective tube and the cable may be bent or compressed. If the cable is bent or compressed for a long time, it may cause the cable to break. In severe cases, it may even cause power outages, affecting the normal use of the cable and causing the protective function of the protective tube to fail. Utility Model Content

[0004] The purpose of the utility model is to provide a power cable protection tube in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a power cable protection tube, comprising a structural body, the structural body comprising an external protection tube, an internal pressure-relieving support body and a cable;

[0006] The internal pressure relief support body is a hollow structure, and at least two arc-shaped pressure-relief parts are arranged inside the internal pressure relief support body, and multiple groups of pressure-resistant limiting convex strips and cable installation parts are arranged outside the internal pressure relief support body;

[0007] The cable is inserted into the cable installation part, the surface of the cable is provided with a flame retardant layer connected to the cable in a sheathing manner, and the surface of the flame retardant layer is provided with a first braided layer connected to the cable in a sheathing manner;

[0008] A pressure-resistant steel belt layer is arranged inside the external protection tube, a second braided layer is arranged inside the pressure-resistant steel belt layer, and the second braided layer is arranged in a covering manner on the outside of the internal pressure-relieving support body.

[0009] Preferably, the cable mounting component is a hollow structure, and the cable mounting component and the internal pressure-relieving support body are integrally formed.

[0010] Preferably, the cable mounting member is located between two adjacent compression-resistant limiting convex strips.

[0011] Preferably, the arc-shaped pressure member and the internal pressure-relief support body are integrally formed, and no less than two of the arc-shaped pressure members are mutually abuttingly connected.

[0012] Preferably, the compression-resistant steel belt layer is formed by spirally winding a steel belt, and the compression-resistant steel belt layer is spirally wound on the surface of the second braided layer.

[0013] Preferably, the flame retardant layer is a glass fiber flame retardant layer.

[0014] The beneficial effects of the utility model are:

[0015] Through the arrangement of the external protective tube, the cable is protected. Through the arrangement of the internal pressure-relieving support body, since the internal pressure-relieving support body is a hollow structure and an arc-shaped pressure-relief piece is arranged inside the hollow structure, when squeezed, the internal pressure-relieving support body is used for pressure relief. Through the arrangement of the flame-retardant layer, the cable has a fire-retardant effect, thereby improving the fire-retardant performance of the cable. Through the arrangement of the compression-resistant steel belt layer, the compression-resistant steel belt layer is formed by spirally winding a steel belt, thereby improving the compression resistance and torsion resistance of the cable protection tube. Through the arrangement of the first braided layer and the second braided layer, the cable is further protected to avoid breakage during long-term bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This utility model is a schematic diagram of the overall structure of a power cable protection tube;

[0017] Figure 2 This is a schematic diagram of the structure of the internal pressure relief support body of the utility model;

[0018] Figure 3 The utility model is a cross-sectional view of a power cable protection tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-3 As shown:

[0021] In the present embodiment, a power cable protection tube includes a structural body, which includes an external protection tube 1, an internal pressure-relief support body 7 and a cable 8. The internal pressure-relief support body 7 is an elastic structure. The cable 8 is arranged in a cable mounting member 4 on the internal pressure-relief support body 7. The external protection tube 1 is sleeved on the outside of the internal pressure-relief support body 7. Through the setting of the external protection tube 1, the cable 8 is protected. Through the setting of the internal pressure-relief support body 7, since the internal pressure-relief support body 7 is a hollow structure, and an arc-shaped pressure-relief member 9 is arranged inside the hollow structure, when squeezed, the internal pressure-relief support body 7 is used for pressure relief. The internal pressure-relief support body 7 is a hollow structure, and no less than two arc-shaped pressure-relief members 9 are arranged inside the internal pressure-relief support body 7. A plurality of groups of compression-resistant limiting convex strips 10 and cable installation parts 4 are provided on the outside of the support body 7, and the plurality of groups of compression-resistant limiting convex strips 10 and cable installation parts 4 are distributed in a circle on the outside of the internal pressure-relieving support body 7; the cable 8 is inserted into the cable installation part 4, and the surface of the cable 8 is provided with a flame-retardant layer 6 which is connected to it in a sheathing manner, and the surface of the flame-retardant layer 6 is provided with a first braided layer 5 which is connected to it in a sheathing manner, and the flame-retardant layer 6 has a flame-retardant effect through the setting of the flame-retardant layer 6; a compression-resistant steel belt layer 2 is provided in the external protective tube 1, and a second braided layer 3 is provided in the compression-resistant steel belt layer 2, and the second braided layer 3 is sheathed on the outside of the internal pressure-relieving support body 7, and the setting of the first braided layer 5 and the second braided layer 3 further protects the cable 8 to avoid breakage during long-term bending.

[0022] Among them, the cable installation part 4 is a hollow structure, and the cable installation part 4 is integrally formed with the internal pressure-relieving support body 7, the cable installation part 4 is located between two adjacent pressure-resistant limiting convex strips 10, the arc-shaped pressure-relief part 9 is integrally formed with the internal pressure-relieving support body 7, and no less than two arc-shaped pressure-relief parts 9 are mutually abutting and connected, and through the setting of the internal pressure-relieving support body 7, when it is squeezed, it plays a role of pressure resistance and pressure relief; the pressure-resistant steel belt layer 2 is formed by spirally winding a steel belt, and the pressure-resistant steel belt layer 2 is spirally wound on the surface of the second braided layer 3, and through the setting of the pressure-resistant steel belt layer 2, and the pressure-resistant steel belt layer 2 is formed by spirally winding a steel belt, the pressure resistance and torsion resistance of the cable protection tube are improved; the flame-retardant layer 6 is a glass fiber flame-retardant layer, which has a fire-retardant effect, and improves the fire-retardant performance of the cable.

[0023] Working principle:

[0024] Through the setting of the external protective tube 1, the cable 8 is protected. Through the setting of the internal pressure-relieving support body 7, since the internal pressure-relieving support body 7 is a hollow structure, and an arc-shaped pressure-reducing member 9 is arranged inside the hollow structure, when squeezed, the internal pressure-relieving support body 7 is used for pressure relief. Through the setting of the flame-retardant layer 6, it has a fire-retardant effect, and improves the fire-retardant performance of the cable. Through the setting of the compression-resistant steel belt layer 2, the compression-resistant steel belt layer 2 is formed by spirally winding a steel belt, which improves the compression resistance and torsion resistance of the cable protection tube. Through the setting of the first braided layer 5 and the second braided layer 3, the cable 8 is further protected to avoid breakage during long-term bending.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power cable protection tube, characterized in that: It comprises a structural body, wherein the structural body comprises an external protection tube (1), an internal pressure-relief support body (7) and a cable (8); The internal pressure-absorbing support body (7) is a hollow structure, and at least two arc-shaped pressure-absorbing members (9) are arranged inside the internal pressure-absorbing support body (7), and a plurality of groups of pressure-resistant limiting convex strips (10) and cable installation members (4) are arranged outside the internal pressure-absorbing support body (7); The cable (8) is inserted into the cable installation part (4), the surface of the cable (8) is provided with a flame retardant layer (6) which is connected to the cable in an enveloping manner, and the surface of the flame retardant layer (6) is provided with a first braided layer (5) which is connected to the cable in an enveloping manner; The outer protection tube (1) is provided with a pressure-resistant steel belt layer (2), the pressure-resistant steel belt layer (2) is provided with a second braided layer (3), and the second braided layer (3) is arranged in a covering manner on the outside of the inner pressure-relieving support body (7).

2. A power cable protection tube according to claim 1, characterized in that: The cable installation component (4) is a hollow structure, and the cable installation component (4) and the internal pressure-relief support body (7) are integrally formed.

3. The power cable protection tube according to claim 1, characterized in that: The cable installation component (4) is located between two adjacent compression-resistant limiting convex strips (10).

4. The power cable protection tube according to claim 1, characterized in that: The arc-shaped pressing piece (9) is integrally formed with the internal pressure-relief support body (7), and no less than two arc-shaped pressing pieces (9) are mutually contact-connected.

5. The power cable protection tube according to claim 1, characterized in that: The compression-resistant steel belt layer (2) is formed by spirally winding a steel belt, and the compression-resistant steel belt layer (2) is spirally wound on the surface of the second braided layer (3).

6. The power cable protection tube according to claim 1, characterized in that: The flame retardant layer (6) is a glass fiber flame retardant layer.

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