Pre-embedded high-temperature-resistant cable

Abstract

The utility model belongs to the field of pre-embedded cables, and particularly relates to a pre-embedded high-temperature-resistant cable, which comprises a protective shell, two guide plates are fixedly mounted in an inner cavity of the protective shell, and positioning plates are fixedly connected to the top and the bottom of the inner cavity of the protective shell; through the cooperation of the reinforcing layer and the protective layer, the high temperature resistance and the aging resistance of the cable body can be improved, the cable body is prevented from being affected by high temperature for a long time and being aged and damaged, and meanwhile, through the cooperation of the protective shell and the guide wheel, a worker can conveniently arrange and position the cable body, so that the installation efficiency is improved; the problems that when an existing embedded cable is arranged and installed, in order to improve the stability of the cable, the cable needs to be positioned through a buckle and other fixing structures, later-stage disassembly and maintenance are not facilitated after fixing, and meanwhile a sheath on the surface of the cable can protect an internal cable core, but is affected by high temperature for a long time, aging damage is prone to occurring, and the cable is damaged easily are solved. And the service life is shortened.

Description

Technical Field

[0001] The utility model relates to the field of embedded cables, in particular to an embedded high-temperature resistant cable. Background Technique

[0002] Embedded cables refer to cables that are usually buried underground compared with common overhead lines, so they are also called underground cables. Cables are made of one or more mutually insulated conductors wrapped with an insulating layer and a protective layer, and are used to transmit electricity or information from one place to another. After entering modern society, due to reasons such as tight urban land use, heavy traffic pressure, and urban appearance construction, underground cable power transmission methods are generally adopted in large cities. Compared with overhead lines, embedded cables have the advantages of small land occupation, reliable power transmission, and strong anti-interference ability.

[0003] When the existing embedded cables are installed and routed, in order to improve the stability of the cables, fixing structures such as buckles are required to position the cables. However, after fixing, it is not conducive to later disassembly and maintenance. At the same time, although the sheath on the surface of the cable can protect the internal cable core, it is prone to aging and damage under the influence of high temperature for a long time, thus reducing its service life. Therefore, an embedded high-temperature resistant cable is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve the problems that when the existing embedded cables are installed and routed, in order to improve the stability of the cables, fixing structures such as buckles are required to position the cables. However, after fixing, it is not conducive to later disassembly and maintenance. At the same time, although the sheath on the surface of the cable can protect the internal cable core, it is prone to aging and damage under the influence of high temperature for a long time, thus reducing its service life, the utility model proposes an embedded high-temperature resistant cable.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an embedded high-temperature resistant cable, including a protective shell. Two guide plates are fixedly installed in the inner cavity of the protective shell. The top and bottom of the inner cavity of the protective shell are fixedly connected with positioning plates. One side of the positioning plate away from the inner wall of the protective shell is fixedly connected with a limiting frame. A spring and a guide wheel are arranged in the inner cavity of the limiting frame. One side of the spring close to the limiting frame is fixedly connected with the inner wall of the limiting frame. The side of the spring away from the limiting frame is fixedly connected with a positioning block. The front side and the rear side of the positioning block are in contact with the inner wall of the limiting frame. The side of the positioning block away from the spring is in contact with the guide wheel. The surface of the guide wheel is in contact with the inner wall of the limiting frame. A cable body is arranged in the inner cavity of the protective shell. The surface of the cable body is in contact with the guide wheel. The front side and the rear side of the cable body both penetrate to the outside of the guide plate;

[0006] The cable body includes a sheath, a filling layer is covered inside the sheath, a cable core is covered inside the filling layer, a strengthening layer is fixedly connected to the surface of the sheath, and a protective layer is fixedly connected to the surface of the strengthening layer.

[0007] Preferably, the strengthening layer includes an insulating layer, the inner side of the insulating layer is fixedly connected to the outer side of the sheath, and a high-temperature resistant layer is fixedly connected to the outer side of the insulating layer.

[0008] Preferably, the insulating layer is made of cross-linked polyethylene material, and the high-temperature resistant layer is made of silicone rubber material.

[0009] By providing an insulating layer made of cross-linked polyethylene material, the cross-linked polyethylene material has excellent electrical insulation performance, good high-temperature resistance, chemical corrosion resistance and anti-aging performance, and can improve the high-temperature resistance performance of the cable body. By providing a high-temperature resistant layer made of silicone rubber material, the silicone rubber material has excellent high-temperature resistance performance, and by having good flexibility and anti-aging performance, it can improve the insulation performance and high-temperature resistance performance of the cable body.

[0010] Preferably, the protective layer includes a moisture-proof layer, the inner side of the moisture-proof layer is fixedly connected to the outer side of the high-temperature resistant layer, and a wear-resistant layer is fixedly connected to the outer side of the moisture-proof layer.

[0011] Preferably, the moisture-proof layer is made of polyethylene material, and the wear-resistant layer is made of polyurethane material.

[0012] By providing a moisture-proof layer made of polyethylene material, the polyethylene material usually has good waterproof performance and can protect the inside of the cable body from moisture to a certain extent. By providing a wear-resistant layer made of polyurethane material, the polyurethane has excellent wear resistance, oil resistance and solvent resistance, and is suitable for the cable body that requires high-strength wear resistance.

[0013] Preferably, mounting plates are fixedly connected to both sides of the protective shell, and inserting rods are inserted into the inner cavities of the mounting plates.

[0014] Preferably, sliding blocks are fixedly connected to the front side and the rear side of the positioning block, and the sides of the sliding blocks away from the positioning block are slidably connected to the inner wall of the limiting frame.

[0015] The advantages of the present utility model are as follows:

[0016] By arranging the cooperation of the strengthening layer and the protective layer, the utility model can improve the high-temperature resistance and anti-aging performance of the cable body, avoid the cable body being affected by high temperature for a long time and aging and damage, and at the same time, by using the cooperation of the protective shell and the guide wheel, it is convenient for the staff to arrange and position the cable body, thereby improving the installation efficiency, and solving the problem that in the wiring installation of the existing embedded cable, in order to improve the stability of the cable, fixing structures such as buckles are needed to position the cable, but it is not conducive to later disassembly and maintenance after fixing. At the same time, although the sheath on the cable surface can protect the internal cable core, it is prone to aging and damage after being affected by high temperature for a long time, thereby reducing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a sectional view of the split structure of the protective shell and the guide plate of the present utility model;

[0020] Figure 3 It is a split view of the structure of the limiting frame and the guide wheel of the present utility model;

[0021] Figure 4 It is a structural composition diagram of the cable body of the present utility model;

[0022] Figure 5 It is a structural composition diagram of the strengthening layer of the present utility model;

[0023] Figure 6 It is a structural composition diagram of the protective layer of the present utility model.

[0024] In the figure: 1, protective shell; 11, guide plate; 12, positioning plate; 13, limiting frame; 14, spring; 15, guide wheel; 16, positioning block; 17, mounting plate; 18, insertion rod; 19, slider; 2, cable body; 21, sheath; 22, filling layer; 23, cable core; 24, strengthening layer; 2401, insulating layer; 2402, high-temperature resistant layer; 25, protective layer; 2501, moisture-proof layer; 2502, wear-resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] The following will further describe the present application in detail Figure 1-6 in conjunction with the attached drawings.

[0027] An embodiment of the present application discloses a pre-embedded high-temperature resistant cable. Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a pre-embedded high-temperature resistant cable includes a protective shell 1. Two guide plates 11 are fixedly installed in the inner cavity of the protective shell 1. Positioning plates 12 are fixedly connected to both the top and bottom of the inner cavity of the protective shell 1. A limiting frame 13 is fixedly connected to the side of the positioning plate 12 away from the inner wall of the protective shell 1. A spring 14 and a guide wheel 15 are arranged in the inner cavity of the limiting frame 13. One side of the spring 14 close to the limiting frame 13 is fixedly connected to the inner wall of the limiting frame 13. The side of the spring 14 away from the limiting frame 13 is fixedly connected to a positioning block 16. The front side and the rear side of the positioning block 16 are in contact with the inner wall of the limiting frame 13. The side of the positioning block 16 away from the spring 14 is in contact with the guide wheel 15. The surface of the guide wheel 15 is in contact with the inner wall of the limiting frame 13. A cable body 2 is arranged in the inner cavity of the protective shell 1. The surface of the cable body 2 is in contact with the guide wheel 15. The front side and the rear side of the cable body 2 both penetrate to the outside of the guide plate 11;

[0028] The cable body 2 includes a sheath 21. A filling layer 22 is covered inside the sheath 21. A cable core 23 is covered inside the filling layer 22. A reinforcing layer 24 is fixedly connected to the surface of the sheath 21. A protective layer 25 is fixedly connected to the surface of the reinforcing layer 24. By setting the cooperation of the reinforcing layer 24 and the protective layer 25, the high-temperature resistance performance and anti-aging performance of the cable body 2 can be improved, avoiding the cable body 2 from being affected by high temperature for a long time and aging and being damaged. At the same time, by using the cooperation of the protective shell 1 and the guide wheel 15, it is convenient for the staff to arrange and position the cable body 2, thereby improving the installation efficiency.

[0029] Referring to Figure 4 and Figure 5, the strengthening layer 24 includes an insulating layer 2401. The inner side of the insulating layer 2401 is fixedly connected to the outer side of the sheath 21. An anti-high-temperature layer 2402 is fixedly connected to the outer side of the insulating layer 2401. The insulating layer 2401 is made of cross-linked polyethylene material, and the anti-high-temperature layer 2402 is made of silicone rubber material. By providing the insulating layer 2401 made of cross-linked polyethylene material, the cross-linked polyethylene material has excellent electrical insulation performance, good high-temperature resistance, chemical corrosion resistance, and anti-aging performance, which can improve the high-temperature resistance performance of the cable body 2. By providing the anti-high-temperature layer 2402 made of silicone rubber material, the silicone rubber material has excellent high-temperature resistance performance, good flexibility and anti-aging performance, which can improve the insulation performance and high-temperature resistance performance of the cable body 2.

[0030] Refer to Figure 4 and Figure 6 , the protective layer 25 includes a moisture-proof layer 2501. The inner side of the moisture-proof layer 2501 is fixedly connected to the outer side of the anti-high-temperature layer 2402. A wear-resistant layer 2502 is fixedly connected to the outer side of the moisture-proof layer 2501. The moisture-proof layer 2501 is made of polyethylene material, and the wear-resistant layer 2502 is made of polyurethane material. By providing the moisture-proof layer 2501 made of polyethylene material, the polyethylene material usually has good waterproof performance, which can protect the inside of the cable body 2 from moisture to a certain extent. By providing the wear-resistant layer 2502 made of polyurethane material, the polyurethane has excellent wear resistance, oil resistance and solvent resistance, which is suitable for the cable body 2 that requires high-strength wear resistance.

[0031] Refer to Figure 1 and Figure 2 , mounting plates 17 are fixedly connected to both sides of the protective shell 1, and a plug rod 18 is inserted into the inner cavity of the mounting plate 17. By providing the cooperation of the mounting plate 17 and the plug rod 18, the protective shell 1 can be installed and fixed, improving the stability of the use of the protective shell 1.

[0032] Refer to Figure 3 , sliding blocks 19 are fixedly connected to the front side and the rear side of the positioning block 16, and the side of the sliding block 19 away from the positioning block 16 is slidably connected to the inner wall of the limiting frame 13. By providing the sliding block 19, the positioning block 16 can be limited, improving the stability of the vertical movement of the positioning block 16.

[0033] Working principle: During use, the staff inserts the cable body 2 into the inner cavity of the protective shell 1 through the guide plate 11. When the surface of the cable body 2 comes into contact with the guide wheels 15, it will drive the two guide wheels 15 to move in opposite directions. When the two guide wheels 15 move in opposite directions, they drive the two positioning blocks 16 to move in opposite directions. When the two positioning blocks 16 move in opposite directions, they squeeze the two springs 14, and through the reaction force of the springs 14, drive the two positioning blocks 16 and the two guide wheels 15 to move towards each other, which can improve the stability of the embedded laying of the cable body 2. By setting the insulating layer 2401 made of cross-linked polyethylene material, the cross-linked polyethylene material has excellent electrical insulation performance, high temperature resistance, chemical corrosion resistance, and good anti-aging performance, which can improve the high temperature resistance of the cable body 2. By setting the high temperature resistant layer 2402 made of silicone rubber material, the silicone rubber material has excellent high temperature resistance, and through its good flexibility and anti-aging performance, it can improve the insulation performance and high temperature resistance of the cable body 2. By setting the moisture-proof layer 2501 made of polyethylene material, the polyethylene material usually has good waterproof performance, which can protect the inside of the cable body 2 from moisture to a certain extent. By setting the wear-resistant layer 2502 made of polyurethane material, polyurethane has excellent wear resistance, oil resistance and solvent resistance, and is suitable for the cable body 2 that requires high-strength wear resistance.

[0034] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A pre-buried high temperature resistant cable, characterized in that: The invention comprises a protective shell (1), wherein the inner cavity of the protective shell (1) is fixedly mounted with two guide plates (11), the top and bottom of the inner cavity of the protective shell (1) are fixedly connected with positioning plates (12), the side of the positioning plate (12) away from the inner wall of the protective shell (1) is fixedly connected with a limiting frame (13), the inner cavity of the limiting frame (13) is provided with a spring (14) and a guide wheel (15), the side of the spring (14) close to the limiting frame (13) is fixedly connected with the inner wall of the limiting frame (13), and the side of the spring (14) away from the limiting frame (1 3) is fixedly connected to one side of the protective shell (1), the front side and the rear side of the positioning block (16) are in contact with the inner wall of the limiting frame (13), the side of the positioning block (16) away from the spring (14) is in contact with the guide wheel (15), the surface of the guide wheel (15) is in contact with the inner wall of the limiting frame (13), the inner cavity of the protective shell (1) is provided with a cable body (2), the surface of the cable body (2) is in contact with the guide wheel (15), and the front side and the rear side of the cable body (2) are both extended to the outer side of the guide plate (11); The cable body (2) comprises a sheath (21), the inner side of the sheath (21) is coated with a filling layer (22), the inner side of the filling layer (22) is coated with a cable core (23), the surface of the sheath (21) is fixedly connected to a reinforcement layer (24), and the surface of the reinforcement layer (24) is fixedly connected to a protective layer (25).

2. The pre-buried high temperature resistant cable according to claim 1, characterized in that: The reinforcement layer (24) comprises an insulating layer (2401), the inner side of the insulating layer (2401) is fixedly connected to the outer side of the sheath (21), and the outer side of the insulating layer (2401) is fixedly connected to a high temperature resistant layer (2402).

3. The pre-buried high temperature resistant cable according to claim 2, characterized in that: The insulating layer (2401) is made of a cross-linked polyethylene material, and the high temperature resistant layer (2402) is made of a silicone rubber material.

4. The pre-buried high temperature resistant cable according to claim 1, characterized in that: The protective layer (25) comprises a moisture-proof layer (2501), the inner side of the moisture-proof layer (2501) is fixedly connected to the outer side of the high-temperature resistant layer (2402), and the outer side of the moisture-proof layer (2501) is fixedly connected to a wear-resistant layer (2502).

5. The pre-buried high temperature resistant cable according to claim 4, characterized in that: The moisture-proof layer (2501) is made of polyethylene material, and the wear-resistant layer (2502) is made of polyurethane material.

6. The pre-buried high temperature resistant cable according to claim 1, characterized in that: Both sides of the protective shell (1) are fixedly connected to mounting plates (17), and an inserting rod (18) is inserted into the inner cavity of the mounting plate (17).

7. The pre-buried high temperature resistant cable according to claim 1, characterized in that: The front and rear sides of the positioning block (16) are both fixedly connected to a sliding block (19), and the side of the sliding block (19) away from the positioning block (16) is slidably connected to the inner wall of the limiting frame (13).

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