Waterproof overhead insulated cable

Abstract

The utility model relates to the technical field of cables, and discloses a waterproof overhead insulated cable which comprises a main body mechanism and a flame-retardant mechanism, the flame-retardant mechanism is located inside the main body mechanism, and the main body mechanism comprises a protective jacket, a waterproof insulation shielding sleeve, a conductor, a silicone rubber insulation layer, a polyethylene insulation layer and an ethylene propylene rubber insulation layer. The waterproof insulation shielding sleeve is fixedly installed on the inner side of the protective outer sleeve, the conductor is fixedly arranged on the inner side of the waterproof insulation shielding sleeve, the conductor is composed of a plurality of stranded copper wires, the silicone rubber insulation layer is fixedly arranged in the waterproof insulation shielding sleeve, the polyethylene insulation layer is fixedly arranged at the upper end of the silicone rubber insulation layer, and the waterproof insulation shielding sleeve is fixedly arranged at the lower end of the polyethylene insulation layer. And the ethylene propylene rubber insulating layer is fixedly arranged at the upper end of the polyethylene insulating layer. According to the waterproof overhead insulated cable, the first water-blocking expansion band, the polyurethane waterproof coating and the second water-blocking expansion band are arranged, so that water can be effectively prevented from invading into the cable, and the waterproof performance of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a waterproof overhead insulated cable. Background Art

[0002] Overhead insulated cable is an overhead conductor equipped with an insulation layer and a protective sheath. It is a special cable manufactured using a production process similar to that of cross-linked cables. It is a new way of transmitting electricity between overhead conductors and underground cables.

[0003] Prior art CN220822577U A flame-retardant overhead insulated cable. The utility model relates to the technical field of cables and discloses a flame-retardant overhead insulated cable, comprising a rotating shaft, wherein the outer peripheries of the front and rear ends of the rotating shaft are rotatably connected with rotating blocks, and the rotating blocks on both sides are fixedly connected to a support plate at one end away from each other, and the inner walls of the rotating blocks on the front and rear sides are provided with circular grooves, and the sides of the circular grooves on the front and rear sides are provided with tooth grooves, and the tooth grooves on the front and rear sides are slidably connected with gear rings, and the upper and lower parts of the inner walls of the front and rear side gear rings are fixedly connected with limiting blocks, and the upper and lower parts of the outer peripheries of the front and rear ends of the rotating shaft are provided with limiting grooves, and a plurality of limiting blocks are slidably connected in the limiting grooves, and the ends of the front and rear side gear rings are fixedly connected with a moving ring at one end away from each other. In the utility model, the rotating block and the support plate can be rotated by the joint action of the rotating shaft, the pull rod, the moving ring, the tooth ring, the tooth groove, the rotating block, the support plate, the limiting block and the limiting groove to achieve the effect of holding the cable that needs to be bent.

[0004] A flame-retardant overhead insulated cable in the prior art is often affected by factors such as rain and humid environment during actual use, resulting in a decrease in the insulation performance of the cable, and even faults such as short circuit and leakage, affecting the safety and stability of power transmission. Utility Model Content

[0005] (1) Technical problems solved

[0006] The purpose of the utility model is to provide a waterproof overhead insulated cable to solve the problem of poor waterproof effect mentioned in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof overhead insulated cable, comprising a main body structure and a flame retardant structure, wherein the flame retardant structure is located inside the main body structure, and the main body structure comprises a protective jacket, a waterproof insulating shielding sleeve, a conductor, a silicone rubber insulation layer, a polyethylene insulation layer and an EPDM insulation layer, wherein the waterproof insulating shielding sleeve is fixedly mounted on the inner side of the protective jacket, the conductor is fixedly arranged on the inner side of the waterproof insulating shielding sleeve, the conductor is composed of multiple twisted copper wires, the silicone rubber insulation layer is fixedly arranged on the inner side of the waterproof insulating shielding sleeve, the polyethylene insulation layer is fixedly arranged on the upper end of the silicone rubber insulation layer, and the EPDM insulation layer is fixedly arranged on the upper end of the polyethylene insulation layer.

[0009] Preferably, the main body structure also includes a first water-blocking expansion tape, a polyurethane waterproof coating, a second water-blocking expansion tape, a metal foil shielding layer, a metal woven mesh shielding layer, an aluminum-plastic composite tape shielding layer and a copper tape shielding layer, and the first water-blocking expansion tape is fixedly installed on the upper end of the EPDM rubber insulation layer.

[0010] Preferably, the polyurethane waterproof coating is fixedly arranged on the upper end of the first water-blocking expansion tape, and the second water-blocking expansion tape is fixedly installed on the upper end of the polyurethane waterproof coating.

[0011] Preferably, the metal foil shielding layer is fixedly installed on the upper end of the second water-blocking expansion tape, the metal woven mesh shielding layer is fixedly installed on the upper end of the metal foil shielding layer, the aluminum-plastic composite tape shielding layer is fixedly installed on the upper end of the metal woven mesh shielding layer, and the copper tape shielding layer is fixedly arranged inside the waterproof insulating shielding sleeve.

[0012] Preferably, the flame retardant mechanism includes a flame retardant rubber layer, a flame retardant glass fiber layer, a ceramic silicone rubber layer and a polyethylene corrosion-resistant layer, and the flame retardant rubber layer is fixedly arranged inside the protective jacket.

[0013] Preferably, the flame retardant glass fiber layer is fixedly mounted on the upper end of the flame retardant rubber layer, and the ceramic silicone rubber layer is fixedly mounted on the upper end of the flame retardant glass fiber layer.

[0014] Preferably, the polyethylene corrosion-resistant layer is fixedly arranged inside the protective jacket.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This waterproof overhead insulated cable, by providing a first water-blocking expansion tape, a polyurethane waterproof coating, and a second water-blocking expansion tape, can effectively prevent moisture from invading the interior of the cable, thereby improving the cable's waterproof performance. The provision of a silicone rubber insulation layer, a polyethylene insulation layer, and an ethylene propylene rubber insulation layer improves the insulation performance of the device, thereby overall improving the reliability and safety of the overhead insulated cable in complex environments. The provision of a metal foil shielding layer, a metal braided mesh shielding layer, an aluminum-plastic composite tape shielding layer, and a copper tape shielding layer provides the device with excellent anti-electromagnetic interference effects.

[0017] 2. The waterproof overhead insulated cable has a flame-retardant rubber layer, a flame-retardant glass fiber layer, a ceramic silicone rubber layer and a polyethylene corrosion-resistant layer inside the protective jacket, which can further protect the cable and improve the flame retardant performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal material structure of the waterproof insulation shielding sleeve of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal material structure of the protective jacket of the utility model;

[0021] Figure 4 This is a schematic diagram of the enlarged structure of the local details of the main mechanism of the utility model.

[0022] In the figure: 1. Main body; 101. Protective jacket; 102. Waterproof insulating shielding sleeve; 103. Conductor; 104. Silicone rubber insulation layer; 105. Polyethylene insulation layer; 106. Ethylene propylene rubber insulation layer; 107. First water-blocking expansion tape; 108. Polyurethane waterproof coating; 109. Second water-blocking expansion tape; 110. Metal foil shielding layer; 111. Metal braided mesh shielding layer; 112. Aluminum-plastic composite tape shielding layer; 113. Copper tape shielding layer; 2. Flame retardant mechanism; 201. Flame retardant rubber layer; 202. Flame retardant glass fiber layer; 203. Ceramic silicone rubber layer; 204. Polyethylene corrosion-resistant layer. 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 - Figure 4 The utility model provides a technical solution: a waterproof overhead insulated cable, comprising a main body 1 and a flame retardant mechanism 2, the flame retardant mechanism 2 being located inside the main body 1, the main body 1 comprising a protective jacket 101, a waterproof insulating shielding sleeve 102, a conductor 103, a silicone rubber insulation layer 104, a polyethylene insulation layer 105 and an EPDM insulation layer 106, the waterproof insulating shielding sleeve 102 being fixedly mounted on the inner side of the protective jacket 101, the conductor 103 being fixedly arranged on the inner side of the waterproof insulating shielding sleeve 102, the conductor 103 being composed of multiple twisted copper wires, the silicone rubber insulation layer 104 being fixedly arranged on the inner side of the waterproof insulating shielding sleeve 102, the polyethylene insulation layer 105 being fixedly arranged on the upper end of the silicone rubber insulation layer 104, and the EPDM insulation layer 106 being fixedly arranged on the upper end of the polyethylene insulation layer 105.

[0025] The main body 1 also includes a first water-blocking expansion tape 107, a polyurethane waterproof coating 108, a second water-blocking expansion tape 109, a metal foil shielding layer 110, a metal braided mesh shielding layer 111, an aluminum-plastic composite tape shielding layer 112 and a copper tape shielding layer 113. The first water-blocking expansion tape 107 is fixedly mounted on the upper end of the ethylene propylene rubber insulation layer 106, the polyurethane waterproof coating 108 is fixedly arranged on the upper end of the first water-blocking expansion tape 107, the second water-blocking expansion tape 109 is fixedly mounted on the upper end of the polyurethane waterproof coating 108, the metal foil shielding layer 110 is fixedly mounted on the upper end of the second water-blocking expansion tape 109, the metal braided mesh shielding layer 111 is fixedly mounted on the upper end of the metal foil shielding layer 110, and the aluminum-plastic composite tape shielding layer 112 is fixedly mounted on the upper end of the copper tape shielding layer 113. At the upper end of the metal braided mesh shielding layer 111, the copper tape shielding layer 113 is fixedly arranged inside the waterproof insulating shielding sleeve 102. By arranging the first water-blocking expansion tape 107, the polyurethane waterproof coating 108 and the second water-blocking expansion tape 109, it can effectively prevent moisture from invading the interior of the cable, thereby improving the waterproof performance of the cable; by arranging the silicone rubber insulation layer 104, the polyethylene insulation layer 105 and the ethylene propylene rubber insulation layer 106, the insulation of the device is improved, thereby improving the overall reliability and safety of the overhead insulated cable in complex environments; by arranging the metal foil shielding layer 110, the metal braided mesh shielding layer 111, the aluminum-plastic composite tape shielding layer 112 and the copper tape shielding layer 113, the device has good anti-electromagnetic interference effect.

[0026] The flame retardant mechanism 2 includes a flame retardant rubber layer 201, a flame retardant glass fiber layer 202, a ceramic silicone rubber layer 203 and a polyethylene corrosion-resistant layer 204. The flame retardant rubber layer 201 is fixedly arranged inside the protective jacket 101, the flame retardant glass fiber layer 202 is fixedly installed on the upper end of the flame retardant rubber layer 201, the ceramic silicone rubber layer 203 is fixedly installed on the upper end of the flame retardant glass fiber layer 202, and the polyethylene corrosion-resistant layer 204 is fixedly arranged inside the protective jacket 101. The flame retardant rubber layer 201, the flame retardant glass fiber layer 202, the ceramic silicone rubber layer 203 and the polyethylene corrosion-resistant layer 204 are arranged inside the protective jacket 101, which can further protect the cable and improve the flame retardant performance.

[0027] Working principle: When the waterproof overhead insulated cable needs to be used, by setting the first water-blocking expansion tape 107, the polyurethane waterproof coating 108 and the second water-blocking expansion tape 109, it can effectively prevent moisture from invading the interior of the cable, thereby improving the waterproof performance of the cable; the flame-retardant rubber layer 201, the flame-retardant glass fiber layer 202, the ceramic silicone rubber layer 203 and the polyethylene corrosion-resistant layer 204 are set inside the protective jacket 101, which can further protect the cable and improve the flame retardant performance. By setting the silicone rubber insulation layer 104, the polyethylene insulation layer 105 and the ethylene propylene rubber insulation layer 106, the insulation of the device is improved, thereby improving the overall reliability and safety of the overhead insulated cable in complex environments. By setting the metal foil shielding layer 110, the metal braided mesh shielding layer 111, the aluminum-plastic composite tape shielding layer 112 and the copper tape shielding layer 113, the device has good anti-electromagnetic interference effect.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Simple modifications or equivalent replacements of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A waterproof overhead insulated cable, comprising a main body (1) and a flame retardant mechanism (2), characterized in that: The flame retardant mechanism (2) is located inside the main body mechanism (1). The main body mechanism (1) includes a protective outer jacket (101), a waterproof insulating shielding sleeve (102), a conductor (103), a silicone rubber insulating layer (104), a polyethylene insulating layer (105), and an ethylene propylene rubber insulating layer (106). The waterproof insulating shielding sleeve (102) is fixedly mounted on the inner side of the protective outer jacket (101). The conductor (103) is fixedly arranged on the inner side of the waterproof insulating shielding sleeve (102). The conductor (103) is composed of a plurality of twisted copper wires. The silicone rubber insulating layer (104) is fixedly arranged inside the waterproof insulating shielding sleeve (102). The polyethylene insulating layer (105) is fixedly arranged on the upper end of the silicone rubber insulating layer (104). The ethylene propylene rubber insulating layer (106) is fixedly arranged on the upper end of the polyethylene insulating layer (105).

2. A waterproof overhead insulated cable according to claim 1, characterized in that: The main body (1) further comprises a first water-blocking expansion tape (107), a polyurethane waterproof coating (108), a second water-blocking expansion tape (109), a metal foil shielding layer (110), a metal braided mesh shielding layer (111), an aluminum-plastic composite tape shielding layer (112), and a copper tape shielding layer (113); the first water-blocking expansion tape (107) is fixedly mounted on the upper end of the ethylene propylene rubber insulation layer (106).

3. The waterproof overhead insulated cable according to claim 2, characterized in that: The polyurethane waterproof coating (108) is fixedly arranged on the upper end of the first water-blocking expansion tape (107), and the second water-blocking expansion tape (109) is fixedly installed on the upper end of the polyurethane waterproof coating (108).

4. The waterproof overhead insulated cable according to claim 3, characterized in that: The metal foil shielding layer (110) is fixedly mounted on the upper end of the second water-blocking expansion tape (109), the metal braided mesh shielding layer (111) is fixedly mounted on the upper end of the metal foil shielding layer (110), the aluminum-plastic composite tape shielding layer (112) is fixedly mounted on the upper end of the metal braided mesh shielding layer (111), and the copper tape shielding layer (113) is fixedly arranged inside the waterproof insulation shielding sleeve (102).

5. The waterproof overhead insulated cable according to claim 4, characterized in that: The flame retardant mechanism (2) comprises a flame retardant rubber layer (201), a flame retardant glass fiber layer (202), a ceramic silicone rubber layer (203) and a polyethylene corrosion resistant layer (204); the flame retardant rubber layer (201) is fixedly arranged inside the protective jacket (101).

6. The waterproof overhead insulated cable according to claim 5, characterized in that: The flame-retardant glass fiber layer (202) is fixedly mounted on the upper end of the flame-retardant rubber layer (201), and the ceramicized silicone rubber layer (203) is fixedly mounted on the upper end of the flame-retardant glass fiber layer (202).

7. The waterproof overhead insulated cable according to claim 6, characterized in that: The polyethylene corrosion-resistant layer (204) is fixedly arranged inside the protective jacket (101).

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