Cold-resistant anti-freezing cable

Abstract

The utility model discloses a cold-resistant anti-freezing cable, and belongs to the technical field of cables. The cable comprises a buffer layer and a PVC fixing layer arranged in the buffer layer, a cable core and a load-bearing steel cable are arranged in the PVC fixing layer, a shielding layer and an insulating layer are sequentially arranged on the outer side of the cable core, and a lining layer, a fireproof layer, a heat insulation layer, an outer sheath layer and a heat absorption coating are sequentially arranged outside the buffer layer. According to the utility model, the buffer layer made of the rubber material is arranged between the lining layer and the PVC fixing layer, thereby playing a role in buffering and damping, preventing the cable from being damaged due to gravity impact, realizing excellent structural support of the cold-resistant cable structure, increasing the strength of structural connection, and improving the tensile property of the cold-resistant cable; through cooperative use of all the layers, the operation stability of the cable is high, moisture can be effectively prevented from entering the cable, and a guarantee is provided for normal supply of electric power.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely relates to a cold -resistant anti -freezing cable. BACKGROUND

[0002] Cold -resistant cable is widely used, and has a large number of demands in petroleum, chemical industry, coal mine, large -scale building, wind power generation and many industries.Especially when the environment low temperature and humid coexist, not only can influence the normal work of cable, even can threaten the stable operation of whole system, so it is important to improve the waterproof technology of cold -resistant cable.

[0003] When temperature reduces, the material performance of cable can change, and ordinary cable sheath material can be hard, brittle, and then lead to crack, increase the risk of moisture invasion.The water -resisting mode of ordinary cable is mostly some simple waterproof coating or sealing mode, but the effect is greatly discounted when being applied to cold -resistant cable.The existing cold -resistant cable can work at a certain low temperature, but the waterproof performance is weak, and cannot adapt to more severe and complex outdoor low -temperature and humid environment etc.Such as at zero temperature, part of cable appears sheath cracking, insulation failure and other problems due to no special cold -resistant waterproof design, moisture enters the cable interior, causes cable damage and short circuit fault to frequently occur, greatly influences the service period and safety. UTILITY MODEL CONTENTS

[0004] In view of the above problems in the prior art, the technical problem to be solved by the utility model is to provide a cold -resistant anti -freezing cable.

[0005] In order to solve the above technical problem, the technical scheme adopted by the utility model is as follows:

[0006] A cold -resistant anti -freezing cable, including buffer layer and the PVC fixed layer of setting in buffer layer inside, the PVC fixed layer inside is provided with wire core and bearing steel cable, the wire core outside is sequentially provided with shielding layer, insulating layer, the outside of buffer layer is sequentially provided with inner liner, fire -resistant layer, heat -insulating layer, outer sheath layer, heat -absorbing coating.

[0007] As preferred, the number of wire core is three, and the number of bearing steel cable is one, and the bearing steel cable is arranged at the center of wire core.

[0008] As preferred, the heat -absorbing coating is made of nano ceramic heat -absorbing coating.

[0009] As preferred, the bearing steel cable is wound by a plurality of steel wire ropes.

[0010] As preferred, the buffer layer is made of rubber material.

[0011] As preferred, the heat -insulating layer is high -temperature resistant sealing mortar layer.

[0012] Preferably, the inner liner layer is made of ethylene chlorotrifluoroethylene copolymer.

[0013] Preferably, the insulation layer is made of peroxide crosslinked polyethylene material.

[0014] Preferably, the outer sheath layer is made of polyvinyl chloride material.

[0015] Preferably, the fire-resistant layer is made of fire-resistant mica material, and the PVC fixing layer is made of flexible polyvinyl chloride mixture.

[0016] Beneficial effects: compared with the prior art, the utility model has the following advantages:

[0017] (1) the utility model discloses a buffer layer made of rubber material is arranged between the inner liner layer and PVC fixing layer, plays the role of buffering and shock absorption, prevents the damage from the gravity impact, realizes the excellent structure support of cold-resistant cable structure, increases the strength of structure connection, improves the tensile property of cold-resistant cable.

[0018] (2) the utility model discloses a load-bearing steel cable that is wound by a plurality of steel wire ropes is arranged in the center of the core, and the steel wire rope is wound by a plurality of 0.8-1.2mm steel wires, so that the load-bearing steel cable has flexibility and can also increase the cable structure strength, and plays the role of structure reinforcing support.

[0019] (3) the utility model discloses that the heat-absorbing coating is wrapped on the outer wall surface of the outer sheath layer, absorbs solar energy, and increases the softness of the cable outer sheath, and through the cooperation of each layer, the cable of the utility model runs stably and can be high, can effectively prevent moisture from entering the cable, and provides guarantee for normal power supply. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a front view cross-sectional structure schematic diagram of the utility model;

[0021] Fig. 2 It is a core front view cross-sectional enlarged structure schematic diagram of the utility model;

[0022] Fig. 3 It is a buffer layer front view cross-sectional enlarged structure schematic diagram of the utility model;

[0023] In the drawing: 1, heat-absorbing coating, 2, outer sheath layer, 3, wear-resistant layer, 4, fire-resistant layer, 5, inner liner layer, 6, buffer layer, 7, PVC fixing layer, 8, installation cavity, 9, core, 10, shielding layer, 11, insulation layer, 12, load-bearing steel cable. DETAILED DESCRIPTION

[0024] The technical scheme in the utility model will be described below in connection with the drawings of the utility model, and additionally, the forms of each structure described in the following embodiments are only examples, and the utility model is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] As Figs. 1-3 The utility model provides a kind of cold-resistant anti-freezing cable, including heat-absorbing coating 1, outer sheath layer 2, heat insulation layer 3, fire resistance layer 4, inner liner 5, buffer layer 6, PVC fixed layer 7, installation cavity 8, core 9, shielding layer 10, insulating layer 11, load-bearing steel cable 12.

[0026] Outer sheath layer 2 is provided with heat-absorbing coating 1 outside, and heat-absorbing coating 1 is nano ceramic heat-absorbing coating material. Heat insulation layer 3 is arranged inside outer sheath layer 2, and fire resistance layer 4 is arranged inside heat insulation layer 3, and inner liner 5 is arranged inside fire resistance layer 4, and buffer layer 6 is arranged inside inner liner 5, and PVC fixed layer 7 is arranged inside buffer layer 6, and installation cavity 8 is arranged in the middle of PVC fixed layer 7, and core 9 and load-bearing steel cable 12 are arranged through installation cavity 8, and shielding layer 10 is arranged on the outside of core 9, and insulating layer 11 is arranged on the outside of shielding layer 10.

[0027] The number of core 9 is three, and the number of load-bearing steel cable 12 is one, and load-bearing steel cable 12 is arranged at the center of core 9, and installation cavity 8 is opened according to the specification of core 9 and load-bearing steel cable 12, for protection. Hemp rope filler is arranged around core 9 and load-bearing steel cable 12.

[0028] Load-bearing steel cable 12 is wound by a plurality of 304 stainless steel wire ropes, and the 304 stainless steel wire rope is wound by a plurality of 0.8-1.2mm steel wires, so that load-bearing steel cable 12 has flexibility and can also increase the structural strength of the cable, and plays a role in structural reinforcement and support.

[0029] Buffer layer 6 is made of rubber material, and buffer layer 6 plays a role in buffering and shock absorption, to prevent damage caused by gravity impact, realize excellent structural support of cold-resistant cable structure, increase the strength of structural connection, and improve the tensile properties of cold-resistant cable.

[0030] Heat insulation layer 3 is a high-temperature resistant sealing cement layer, and the sealing cement is used to insulate internal and external heat conduction, and plays a role in heat preservation. Inner liner 5 is made of ethylene chlorotrifluoroethylene copolymer. Insulating layer 11 is made of peroxide crosslinked polyethylene material. Outer sheath layer 2 is made of polyvinyl chloride material. Fire resistance layer 4 is made of fire-resistant mica material. PVC fixed layer 7 is made of flexible polyvinyl chloride mixture, which has good flexibility and wear resistance.

[0031] The shielding layer 10 is made of tinned copper wire, and the shielding layer 10 is used to improve the anti-interference performance of the single wire core 9, so as to avoid mutual interference between the wire cores 9, thereby ensuring the independence of information transmission of each wire core 9.

[0032] In the specific implementation, the three wire cores 9 are placed in the middle of the PVC fixing layer 7, the wire cores 9 play a conductive role, the load-bearing steel cable 12 is placed in the center of the three wire cores 9 to play a structure reinforcing and supporting role, and the structure strength of the cable is increased while the toughness is increased. The inside of the installation cavity 8 opened according to the specifications of the wire core 9 and the load-bearing steel cable 12 is provided with a hemp rope filler, which plays a protective role. The outside of the wire core 9 is wrapped with the shielding layer 10, the shielding layer 10 is made of tinned copper wire, and the shielding layer 10 plays a role of electromagnetic shielding. The outside of the shielding layer 10 is wrapped with the insulation layer 11, the insulation layer 11 is made of peroxide cross-linked polyethylene material, and the insulation layer 11 plays a role of insulation.

[0033] The buffer layer 6 is wrapped on the outer wall surface of the PVC fixing layer 7 to play a role of buffering and shock absorption. The inner lining layer 5 is wrapped on the outer wall surface of the buffer layer 6 to play a role of electrical insulation and wear resistance. The fire-resistant layer 4 is wrapped on the outer wall surface of the inner lining layer 5 to play a role of fire resistance. The heat insulation layer 3 is wrapped on the outer wall surface of the fire-resistant layer 4 to play a role of heat preservation, so as to prevent external low temperature from entering the inside and affecting the transmission efficiency. The outer sheath layer 2 is wrapped on the outer wall surface of the heat insulation layer 3 to increase the overall structural property and structural strength of the cable. The heat-absorbing coating layer 1 is wrapped on the outer wall surface of the outer sheath layer 2 to absorb solar energy and increase the softness of the cable outer sheath.

[0034] The above only describes preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cold-resistant and freeze-proof cable, characterized in that, It includes a buffer layer (6) and a PVC fixing layer (7) disposed inside the buffer layer (6). The PVC fixing layer (7) is provided with a wire core (9) and a load-bearing steel cable (12). The wire core (9) is provided with a shielding layer (10) and an insulation layer (11) in sequence on the outside. The buffer layer (6) is provided with an inner lining layer (5), a fire-resistant layer (4), a heat insulation layer (3), an outer sheath layer (2), and a heat-absorbing coating layer (1) in sequence on the outside.

2. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The number of cores (9) is three, and the number of load-bearing steel cables (12) is one, with the load-bearing steel cables (12) positioned at the center of the cores (9).

3. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The heat-absorbing coating (1) is made of nano-ceramic heat-absorbing coating.

4. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The load-bearing steel cable (12) is made of multiple strands of steel wire rope.

5. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The buffer layer (6) is made of rubber.

6. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The heat insulation layer (3) is a high-temperature resistant sealing mortar layer.

7. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The inner liner (5) is made of ethylene trifluorochloroethylene copolymer.

8. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The insulating layer (11) is made of peroxide cross-linked polyethylene material.

9. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The outer sheath layer (2) is made of polyvinyl chloride material.

10. The cold-resistant and freeze-proof cable according to claim 1, characterized in that, The refractory layer (4) is made of refractory mica material, and the PVC fixing layer (7) is made of flexible polyvinyl chloride mixture.

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