Flexible reinforced overhead insulated cable

Abstract

The utility model relates to the technical field of insulated cables, and discloses a flexible reinforced overhead insulated cable, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is positioned inside the main body mechanism, the main body mechanism comprises an insulating rubber sleeve, a waterproof layer and a cable core I. The waterproof layer is fixedly arranged on the inner side of the insulating rubber sleeve, and the cable core I is fixedly arranged on the outer side of the waterproof layer. The first cable core is fixedly arranged in the waterproof layer. According to the flexible reinforced overhead insulated cable, the insulation effect of the cable is improved through the installation of the main body mechanism and the arrangement of the insulation rubber sleeve, the waterproof effect of the cable is improved through the arrangement of the waterproof layer, and the risk of frost cracking of the cable can be reduced; the first nanometer foam filling block, the second nanometer foam filling block and the third nanometer foam filling block serve as flexible filling materials, friction among the first cable core, the second cable core and the third cable core can be reduced, the heat preservation effect can be achieved, the risk that the cable is frozen to crack is reduced, and the safety of the cable is effectively improved.

Description

Technical Field

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

[0002] An overhead cable (fully called an overhead insulated cable) is an overhead conductor equipped with an insulating layer and a protective outer skin. It is a special cable manufactured using a production process similar to that of a cross-linked cable. It is a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core and can be divided into hard aluminum wire structures, hard-drawn copper wire structures, aluminum alloy wire structures, steel core or aluminum alloy core support structures, and self-supporting three-core stranded structures (the wire cores can be hard aluminum or hard copper wire) according to their different structures. It has the main characteristics of high power supply reliability, good power supply safety, convenient erection and maintenance, and reasonable economy. Its main technical parameters include weather resistance, insulation level, inner and outer semi-conductive shielding layers. Overhead cables are widely used in power transmission at home and abroad.

[0003] The existing patent CN201307438Y for a flexible reinforced overhead insulated cable proposed that the utility model includes a plurality of aluminum cores stranded together and an insulating layer wrapped outside the aluminum cores. The special feature is that a plurality of fine steel wires are provided in the gap between the aluminum cores and the insulating layer, and the diameter of the fine steel wires is 0.6 - 1.2 mm. The advantages are that since a plurality of fine steel wires are provided in the gap between the aluminum cores and the insulating layer, the single steel core provided in the center of the existing reinforced overhead insulated cable is cancelled, and while ensuring the tensile strength, the hardness of the cable is reduced, the flexibility is good, and it is convenient for installation and use.

[0004] However, although the existing patent CN201307438Y reduces the hardness of the cable while ensuring the tensile strength, has good flexibility and is convenient for installation and use, when the cable is installed in alpine regions, the low-temperature environment may freeze and crack the external structure of the cable, which may then affect the signal transmission. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] The purpose of the utility model is to provide a flexible reinforced overhead insulated cable to solve the problem that when the cable is installed in alpine regions in the above-mentioned technology in the background technology, the low-temperature environment may freeze and crack the external structure of the cable, which may then affect the signal transmission.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solutions: A soft reinforced overhead insulated cable, including a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is located inside the main body mechanism, the main body mechanism includes an insulating rubber sleeve, a waterproof layer and a first cable core, the waterproof layer is fixedly arranged inside the insulating rubber sleeve, and the first cable core is fixedly arranged inside the waterproof layer; The main body mechanism includes a second cable core, a third cable core, an outer semi-conductive shielding layer one, a nano-foam filling block one, a nano-foam filling block two and a nano-foam filling block three, and the second cable core is fixedly arranged inside the waterproof layer.

[0009] Preferably, the second cable core is fixedly arranged above the first cable core, the third cable core is fixedly arranged inside the waterproof layer, the setting of the insulating rubber sleeve improves the insulation effect of the cable, and the setting of the waterproof layer improves the waterproof effect of the cable, which can reduce the risk of the cable being frozen and cracked, and effectively improves the safety of the cable.

[0010] Preferably, the third cable core is fixedly arranged to the left of the first cable core, and the third cable core is fixedly arranged below the second cable core. The nano-foam filling block one, the nano-foam filling block two and the nano-foam filling block three are used as flexible filling materials, which can reduce the friction between the first cable core, the second cable core and the third cable core, and effectively improve the safety of the cable.

[0011] Preferably, the outer semi-conductive shielding layer one is fixedly arranged inside the waterproof layer, and the nano-foam filling block one is fixedly arranged in the middle of the first cable core and the second cable core. The nano-foam filling block one, as a flexible filling material, can play a heat preservation effect, reduce the risk of the cable being frozen and cracked, and effectively improve the safety of the cable.

[0012] Preferably, the nano-foam filling block two is fixedly arranged in the middle of the second cable core and the third cable core, and the nano-foam filling block three is fixedly arranged in the middle of the first cable core and the third cable core. The nano-foam filling block two and the nano-foam filling block three, as flexible filling materials, can play a heat preservation effect, reduce the risk of the cable being frozen and cracked, and effectively improve the safety of the cable.

[0013] Preferably, the auxiliary mechanism includes a flame retardant layer, an inner semi-conductive shielding layer two, an elastic layer and a heat resistant layer. The flame retardant layer is fixedly arranged inside the outer semi-conductive shielding layer one. The setting of the flame retardant layer can prevent spontaneous combustion inside the cable. Preferably, the inner semi-conductive shielding layer two is fixedly arranged inside the flame retardant layer, the elastic layer is fixedly arranged inside the inner semi-conductive shielding layer two, the heat resistant layer is fixedly arranged inside the elastic layer, and the heat resistant layer is fixedly arranged outside the second cable core. The setting of the elastic layer effectively improves the ductility of the cable, and the setting of the heat resistant layer effectively improves the heat resistance effect of the cable.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. For this soft reinforced overhead insulated cable, through the installation of the main mechanism, the setting of the insulating rubber sleeve improves the insulation effect of the cable, and the setting of the waterproof layer improves the waterproof effect of the cable, which can reduce the risk of the cable being frozen and cracked. The nano-foam filling block 1, nano-foam filling block 2, and nano-foam filling block 3, as flexible filling materials, can not only reduce the friction between the cable core 1, cable core 2, and cable core 3, but also play a heat preservation effect, reducing the risk of the cable being frozen and cracked, effectively improving the safety of the cable.

[0016] 2. For this soft reinforced overhead insulated cable, through the installation of the auxiliary mechanism, the setting of the flame retardant layer can prevent spontaneous combustion inside the cable. The setting of the elastic layer effectively improves the ductility of the cable, and the setting of the heat resistant layer effectively improves the heat resistance effect of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a partial sectional structural schematic diagram of the present utility model;

[0019] Figure 3 is a partial sectional structural schematic diagram of the present utility model;

[0020] Figure 4 is a partial sectional structural schematic diagram of the present utility model.

[0021] In the figure: 1. Main mechanism; 101. Insulating rubber sleeve; 102. Waterproof layer; 103. Cable core 1; 104. Cable core 2; 105. Cable core 3; 106. Outer semi-conductive shielding layer 1; 107. Nano-foam filling block 1; 108. Nano-foam filling block 2; 109. Nano-foam filling block 3; 2. Auxiliary mechanism; 201. Flame retardant layer; 202. Inner semi-conductive shielding layer 2; 203. Elastic layer; 204. Heat resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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 of the embodiments. Based on the embodiments of 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.

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a soft reinforced overhead insulated cable, including a main body mechanism 1 and an auxiliary mechanism 2. The auxiliary mechanism 2 is located inside the main body mechanism 1. The main body mechanism 1 includes an insulating rubber sleeve 101, a waterproof layer 102, and a first cable core 103. The waterproof layer 102 is fixedly arranged inside the insulating rubber sleeve 101, and the first cable core 103 is fixedly arranged inside the waterproof layer 102; The main body mechanism 1 includes a second cable core 104, a third cable core 105, an outer semi-conductive shielding layer 106, a nano-foam filling block 107, a nano-foam filling block 108, and a nano-foam filling block 109. The second cable core 104 is fixedly arranged inside the waterproof layer 102, the second cable core 104 is fixedly arranged above the first cable core 103, the third cable core 105 is fixedly arranged inside the waterproof layer 102, the third cable core 105 is fixedly arranged to the left of the first cable core 103, the third cable core 105 is fixedly arranged below the second cable core 104, the outer semi-conductive shielding layer 106 is fixedly arranged inside the waterproof layer 102, the nano-foam filling block 107 is fixedly arranged in the middle of the first cable core 103 and the second cable core 104, the nano-foam filling block 108 is fixedly arranged in the middle of the second cable core 104 and the third cable core 105, and the nano-foam filling block 109 is fixedly arranged in the middle of the first cable core 103 and the third cable core 105.

[0024] The auxiliary mechanism 2 includes a flame-retardant layer 201, an inner semi-conductive shielding layer 202, an elastic layer 203, and a heat-resistant layer 204. The flame-retardant layer 201 is fixedly arranged inside the outer semi-conductive shielding layer 106, the inner semi-conductive shielding layer 202 is fixedly arranged inside the flame-retardant layer 201, the elastic layer 203 is fixedly arranged inside the inner semi-conductive shielding layer 202, the heat-resistant layer 204 is fixedly arranged inside the elastic layer 203, and the heat-resistant layer 204 is fixedly arranged outside the second cable core 104. When using the soft reinforced overhead insulated cable, the setting of the insulating rubber sleeve 101 improves the insulation effect of the cable, and the setting of the waterproof layer 102 improves the waterproof effect of the cable, which can reduce the risk of the cable being frozen and cracked. The nano-foam filling blocks 107, 108, and 109, as flexible filling materials, can not only reduce the friction between the first cable core 103, the second cable core 104, and the third cable core 105, but also play a heat preservation effect and reduce the risk of the cable being frozen and cracked. The setting of the flame-retardant layer 201 can prevent spontaneous combustion inside the cable. The setting of the elastic layer 203 effectively improves the ductility of the cable, and the setting of the heat-resistant layer 204 effectively improves the heat-resistant effect of the cable.

[0025] Working principle: When using the soft reinforced overhead insulated cable, the setting of the insulating rubber sleeve 101 improves the insulation effect of the cable, and the setting of the waterproof layer 102 improves the waterproof effect of the cable, which can reduce the risk of the cable being frozen and cracked. The nano-foam filling block one 107, the nano-foam filling block two 108 and the nano-foam filling block three 109, as flexible filling materials, can not only reduce the friction between the cable core one 103, the cable core two 104 and the cable core three 105, but also play a heat preservation effect and reduce the risk of the cable being frozen and cracked. The setting of the flame retardant layer 201 can prevent spontaneous combustion inside the cable. The setting of the elastic layer 203 effectively improves the ductility of the cable. The setting of the heat-resistant layer 204 effectively improves the heat-resistant effect of the cable.

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than a limitation on the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A flexible reinforced aerial insulated cable, comprising a main body mechanism (1) and an auxiliary mechanism (2), characterized in that: The auxiliary mechanism (2) is located inside the main body mechanism (1). The main body mechanism (1) includes an insulating rubber sleeve (101), a waterproof layer (102), and a first cable core (103). The waterproof layer (102) is fixedly arranged inside the insulating rubber sleeve (101), and the first cable core (103) is fixedly arranged inside the waterproof layer (102). The main body mechanism (1) includes a second cable core (104), a third cable core (105), an outer semi-conductive shielding layer one (106), a nano-foam filling block one (107), a nano-foam filling block two (108), and a nano-foam filling block three (109). The second cable core (104) is fixedly arranged inside the waterproof layer (102).

2. The soft reinforced overhead insulated cable according to claim 1, wherein: The second cable core (104) is fixedly arranged above the first cable core (103), and the third cable core (105) is fixedly arranged inside the waterproof layer (102).

3. The soft reinforced aerial insulated cable according to claim 2, wherein: The third cable core (105) is fixedly arranged to the left of the first cable core (103), and the third cable core (105) is fixedly arranged below the second cable core (104).

4. The soft reinforced overhead insulated cable according to claim 3, characterized in that: The outer semi-conductive shielding layer one (106) is fixedly arranged inside the waterproof layer (102), and the nano-foam filling block one (107) is fixedly arranged in the middle of the first cable core (103) and the second cable core (104).

5. The soft reinforced overhead insulated cable according to claim 4, wherein: The nano-foam filling block two (108) is fixedly arranged in the middle of the second cable core (104) and the third cable core (105), and the nano-foam filling block three (109) is fixedly arranged in the middle of the first cable core (103) and the third cable core (105).

6. The soft reinforced aerial insulated cable according to claim 5, characterized in that: The auxiliary mechanism (2) includes a flame-retardant layer (201), an inner semi-conductive shielding layer two (202), an elastic layer (203), and a heat-resistant layer (204). The flame-retardant layer (201) is fixedly arranged inside the outer semi-conductive shielding layer one (106).

7. The soft reinforced overhead insulated cable according to claim 6, wherein: The inner semi-conductive shielding layer two (202) is fixedly arranged inside the flame-retardant layer (201), the elastic layer (203) is fixedly arranged inside the inner semi-conductive shielding layer two (202), the heat-resistant layer (204) is fixedly arranged inside the elastic layer (203), and the heat-resistant layer (204) is fixedly arranged outside the second cable core (104).

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