A parallel high-load clustered overhead cable

Abstract

The present invention discloses a parallel high-load clustered overhead cable, comprising a first tube body, a second tube body is arranged inside the first tube body, three third grooves are equidistantly formed on the inner side wall of the first tube body, a first insulating layer is bonded to the inner side wall of the third groove, a first cable is adhered to the inner side of the first insulating layer, a second cable is arranged inside the second tube body, a second insulating layer is adhered to the outer side wall of the second cable, the outer side wall of the second insulating layer is adhered to the inner side wall of the second tube body, and three connecting rods are equidistantly welded to the outer side wall of the second tube body; by arranging a heat-conducting layer on the outer side of the flame-retardant layer, the foam can assist in heat dissipation while providing buffering, and the polymer breathable membrane only allows gas to pass through, thereby preventing the heat generated when the overhead cable is highly loaded from accumulating inside the bearing layer, thereby solving the problem of increased cable resistance and excessive loss of electric energy during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of overhead cables, in particular to a parallel high-load bundled overhead cable. Background Art

[0002] Overhead cables are overhead conductors equipped with an insulating layer and a protective outer sheath. They are a special type of cable manufactured using a production process similar to that of cross-linked cables. They are a new way of transmitting electricity between overhead conductors and underground cables. Overhead cables are all single-core and can be divided into hard aluminum wire structure, hard-drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure, and self-supporting three-core composite structure (the wire core can be hard aluminum or hard copper wire), etc., according to their different structures. They have the main characteristics of high power supply reliability, good power supply safety, convenient installation and maintenance, and reasonable economy.

[0003] Existing overhead cables generate heat during operation due to their high load. The heat accumulates inside the protective layer, resulting in low heat dissipation efficiency, which increases the resistance of the cable and causes excessive losses in the transportation of electric energy. The three-core cable structure will cause friction between the internal cables due to external forces at high altitudes, causing damage to the insulation layer, and then the risk of fire caused by cable contact. Therefore, a parallel high-load bundled overhead cable is proposed. Summary of the invention

[0004] The object of the present invention is to provide a parallel high-load bundled overhead cable 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 parallel high-load bundled overhead cable comprises a first tube body, a second tube body is arranged inside the first tube body, three third grooves are equidistantly provided on the inner side wall of the first tube body, a first insulating layer is bonded to the inner side wall of the third groove, a first cable is adhered to the inner side of the first insulating layer, a second cable is arranged inside the second tube body, an outer side wall of the second cable is adhered to the second insulating layer, an outer side wall of the second insulating layer is adhered to the inner side wall of the second tube body, three connecting rods are equidistantly welded to the outer side wall of the second tube body, a third arc plate is welded to the end of the connecting rod away from the second tube body, a third insulating layer is bonded to the inner side of the third arc plate, an inner side of the third insulating layer is adhered to the outer side wall of the first cable, a flame retardant layer is bonded to the outer side wall of the first tube body, a heat conductive layer is bonded to the outer side wall of the heat conductive layer, foam is bonded to the outer side wall of the foam, a bearing layer is bonded to the outer side wall of the bearing layer, and a polymer breathable film is bonded to the outer side wall of the first tube body.

[0006] As a further preferred embodiment of the present technical solution: a first groove is formed on the outer wall of the foam, a first arc plate is attached to the inner wall of the first groove, a second arc plate is formed on the outer wall of the bearing layer, and the outer side of the first arc plate is fixedly connected to the outer side of the second arc plate by rivets.

[0007] As a further preferred embodiment of the present technical solution: a first plate body is welded to the outer side of the second arc-shaped plate, a threaded groove is opened on one side of the first plate body, a screw is threadedly connected to the inner side wall of the threaded groove, and the second plate body is welded to one end of the screw.

[0008] As a further preferred embodiment of the present technical solution: a through hole is provided on the upper surface of the second plate body.

[0009] As a further preferred embodiment of the technical solution: a sealing gasket is bonded to one side of the second plate body, one side of the sealing gasket is attached to one side of the first plate body, and an anti-corrosion layer is bonded to the inner side wall of the through hole.

[0010] As a further preferred embodiment of the technical solution: the outer wall of the bearing layer is evenly and fixedly connected with protrusions.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a heat-conducting layer on the outside of the flame-retardant layer, the foam can assist in heat dissipation while providing buffering, and the polymer breathable membrane only allows gas to pass through, thereby preventing the heat generated when the overhead cable is highly loaded from accumulating inside the bearing layer, thereby improving the heat dissipation efficiency, solving the problems of increased cable resistance and excessive loss of electric energy during transportation, and utilizing the third groove and the third arc plate to limit the first cable, and the connecting plate and the second tube body to play a supporting role, thereby preventing the internal cables from rubbing against each other due to external forces at high altitudes, causing damage to the insulation layer, thereby avoiding the risk of fire caused by cable contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 It is a left-side structural schematic diagram of the present invention;

[0014] Figure 3 It is a top view schematic diagram of the connection structure of the first plate body, the sealing gasket and the second plate body of the present invention;

[0015] Figure 4 It is a side view schematic diagram of the connection structure of the first cable, the arc plate, the connecting rod and the second tube body of the present invention.

[0016] In the figure: 1. first tube body; 2. second tube body; 3. third groove; 4. first insulating layer; 5. first cable; 6. second insulating layer; 7. second cable; 8. connecting rod; 9. third arc plate; 10. third insulating layer; 11. flame retardant layer; 12. heat conductive layer; 13. foam; 14. bearing layer; 15. first groove; 16. first arc plate; 17. second arc plate; 18. first plate body; 19. threaded groove; 20. second plate body; 21. screw; 22. sealing gasket; 23. through hole; 24. anti-corrosion layer; 25. protrusion; 26. polymer breathable membrane. DETAILED DESCRIPTION

[0017] 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. Example

[0018] See also Figure 1-4 The present invention provides a technical solution: a parallel high-load bundled overhead cable, comprising a first tube body 1, a second tube body 2 is arranged inside the first tube body 1, three third grooves 3 are equidistantly opened on the inner wall of the first tube body 1, a first insulating layer 4 is bonded to the inner wall of the third groove 3, a first cable 5 is attached to the inner side of the first insulating layer 4, a second cable 7 is arranged inside the second tube body 2, a second insulating layer 6 is attached to the outer wall of the second cable 7, the outer wall of the second insulating layer 6 is attached to the inner wall of the second tube body 2, and the second tube body 2 The outer wall of the first tube body 1 is welded with three connecting rods 8 at equal intervals, and the end of the connecting rod 8 away from the second tube body 2 is welded with a third arc plate 9, the inner side of the third arc plate 9 is bonded with a third insulating layer 10, the inner side of the third insulating layer 10 is attached to the outer wall of the first cable 5, the outer wall of the first tube body 1 is bonded with a flame retardant layer 11, the outer wall of the flame retardant layer 11 is bonded with a heat conductive layer 12, the outer wall of the heat conductive layer 12 is bonded with foam 13, the outer wall of the foam 13 is bonded with a bearing layer 14, and the outer wall of the bearing layer 14 is bonded with a polymer breathable membrane 26.

[0019] In the present embodiment, specifically: a first groove 15 is formed on the outer wall of the foam 13, a first arc plate 16 is attached to the inner wall of the first groove 15, a second arc plate 17 is formed on the outer wall of the bearing layer 14, and the outer side of the first arc plate 16 and the outer side of the second arc plate 17 are fixedly connected by rivets; the first groove 15 is provided to facilitate the installation of the first arc plate 16, and the provision of the first arc plate 16 and the second arc plate 17 can increase the contact area between the first plate body 18 and the bearing layer 14, thereby preventing the first plate body 18 from separating from the bearing layer 14.

[0020] In this embodiment, specifically: a first plate body 18 is welded to the outer side of the second arc-shaped plate 17, a threaded groove 19 is opened on one side of the first plate body 18, an inner side wall of the threaded groove 19 is threadedly connected with a screw 21, and a second plate body 20 is welded to one end of the screw 21; the threaded groove 19 and the screw 21 are provided to facilitate the connection between the two bearing layers 14, thereby making the two bearing layers 14 more stable.

[0021] In this embodiment, specifically: a through hole 23 is opened on the upper surface of the second plate body 20. The through hole 23 is provided to facilitate workers to use tools through the through hole 23 during installation to rotate the second plate body 20, thereby threading the screw 21 into the threaded groove 19.

[0022] In the present embodiment, specifically: a sealing gasket 22 is bonded to one side of the second plate body 20, one side of the sealing gasket 22 is attached to one side of the first plate body 18, and an anti-corrosion layer 24 is bonded to the inner wall of the through hole 23; the sealing gasket 22 is made of rubber, and the provision of the sealing gasket 22 and the anti-corrosion layer 24 can prevent rust between the screw 21 and the thread groove 19, and internal rust of the through hole 23 in the external environment, thereby extending the service life of the device.

[0023] In this embodiment, specifically: the outer wall of the bearing layer 14 is evenly fixedly connected with the protrusions 25; the protrusions 25 can make small molecules of rainwater gather along the outer wall of the protrusions 25, thereby reducing the adhesion of rainwater to the surface of the device, thereby avoiding ice formation in winter.

[0024] Working principle or structural principle, the material of the heat conducting layer 12 of the present invention is graphite, and the material of the bearing layer 14 is a polymer composite resin. When the device is in use, the second cable 7 is located inside the second tube body 2, and the second insulating layer 6 can prevent the second cable 7 from directly contacting the second tube body 2. By utilizing the supporting effect of the connecting rod 8, the first cable 5 is evenly spaced outside the second cable 7, which can avoid slight friction or displacement between the first cable 5 and the second cable 7, thereby avoiding contact between the first cable 5 and the second cable 7, and avoiding the occurrence of dangers such as short circuit and fire. The third groove 3 can limit the first cable 5, and under the joint action of the connecting rod 8, the first cable 5 is always kept inside the third groove 3, avoiding the first cable 5 from detaching from the third groove 3 and the third arc plate 9. The flame retardant layer 11 can prevent fire between the first cable 5 and the second cable 7. The inside of the flame retardant layer 11 Containing boron composite low-smoke flame retardant can avoid the release of toxic smoke during combustion, which can easily suffocate people and affect firefighting work. The thermal conductive layer 12 can quickly dissipate the heat generated by the high-load first cable 5 and the second cable 7, thereby avoiding the temperature increase that increases the resistance between the first cable 5 and the second cable 7, thereby reducing the loss of electric energy and avoiding the occurrence of fire. The foam 13 can play a certain buffering role when the device is subjected to external force at high altitudes. The first curved plate 16 and the second curved plate 17 can increase the contact area between the first plate body 18 and the bearing layer 14, thereby making the connection between the first plate body 18 and the bearing layer 14 tighter. Workers can use tools to rotate the second plate body 20 through the through hole 23, so that the second plate body 20 drives the screw 21 to be threadedly connected with the threaded groove 19, so that the two bearing layers 14 are connected, thereby increasing the stability of the device.

[0025] 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. A parallel high-load bundled overhead cable, comprising a first tube body (1), characterized in that: A second tube body (2) is provided inside the first tube body (1); three third grooves (3) are equidistantly formed on the inner wall of the first tube body (1); a first insulating layer (4) is bonded to the inner wall of the third groove (3); a first cable (5) is attached to the inner side of the first insulating layer (4); a second cable (7) is provided inside the second tube body (2); a second insulating layer (6) is bonded to the outer wall of the second cable (7); the outer wall of the second insulating layer (6) is attached to the inner wall of the second tube body (2); three connecting rods (8) are equidistantly welded to the outer wall of the second tube body (2); a third arc plate (9) is welded to one end of the connecting rod (8) away from the second tube body (2); a third insulating layer (10) is bonded to the inner side of the third arc plate (9); the inner side of the third insulating layer (10) is attached to the outer wall of the first cable (5); a flame retardant layer (11) is bonded to the outer wall of the first tube body (1); the flame retardant layer (11) The outer wall of the heat-conducting layer (12) is bonded to the outer wall of the heat-conducting layer (12), the outer wall of the foam (13) is bonded to the bearing layer (14), and the outer wall of the bearing layer (14) is bonded to a polymer breathable film (26); the outer wall of the foam (13) is provided with a first groove (15), the inner wall of the first groove (15) is bonded with a first arc plate (16), and the outer wall of the bearing layer (14) is provided with a second arc plate (17). The outer side of the first arc-shaped plate (16) and the outer side of the second arc-shaped plate (17) are fixedly connected by rivets; the outer side of the second arc-shaped plate (17) is welded with a first plate body (18); a threaded groove (19) is provided on one side of the first plate body (18); a screw rod (21) is threadedly connected to the inner side wall of the threaded groove (19); and one end of the screw rod (21) is welded with a second plate body (20); and the outer side wall of the bearing layer (14) is evenly fixedly connected with a protrusion (25).

2. A parallel high-load bundled overhead cable according to claim 1, characterized in that: A through hole (23) is provided on the upper surface of the second plate body (20).

3. A parallel high-load bundled overhead cable according to claim 2, characterized in that: A sealing gasket (22) is bonded to one side of the second plate body (20), one side of the sealing gasket (22) is attached to one side of the first plate body (18), and an anti-corrosion layer (24) is bonded to the inner wall of the through hole (23).

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