Waterproof and fireproof power cable

Abstract

The utility model provides a waterproof fire-resistant power cable which comprises three conductive wire cores, the outer walls of the three conductive wire cores are all wrapped with insulating sleeves, the outer walls of the insulating sleeves are wrapped with waterproof sleeves, the space between the waterproof sleeves and the insulating sleeves is filled with a compression-resistant layer, reinforcing ribs are arranged in the compression-resistant layer, and the reinforcing ribs are arranged in the waterproof fire-resistant power cable. The outer wall of the waterproof sleeve is wrapped with a fireproof sleeve, an armor layer is arranged between the waterproof sleeve and the fireproof sleeve, and a protection mechanism is arranged on the outer wall of the fireproof sleeve. The power cable has good fireproof and waterproof performance, the fireproof material adopts a halogen-free flame-retardant material, the power cable has the advantages of environmental protection, no toxicity, low smoke, no halogen and oxidation resistance, no toxic gas is released in fire, and the life safety of personnel is guaranteed; the anti-compression layer and the reinforcing ribs are arranged inside, so that the anti-compression performance of the cable is improved, and the internal conductors are prevented from being easily damaged after being extruded; and in addition, the cable also has good wear resistance, so that the cable sheath is prevented from being easily worn when a worker pulls the cable.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically, to a waterproof and fire-resistant power cable. Background Art

[0002] Power cables are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. There are many types of its products, and the application range is very wide, involving industries such as electricity, construction, communication, and manufacturing, and is closely related to all sectors of the national economy.

[0003] The fireproof and waterproof performance of existing cables still needs to be improved. When used on construction sites, the conductors inside the cables are easily damaged when the cables are squeezed, affecting the normal use of the cables. In addition, when workers pull the cables, the outer skins of the cables are easily worn.

[0004] Therefore, we make improvements on this and propose a waterproof and fire-resistant power cable. Content of the Utility Model

[0005] The purpose of the utility model is to address the issues that the fireproof and waterproof performance of existing cables still needs to be improved, and when used on construction sites, the conductors inside the cables are easily damaged when the cables are squeezed, affecting the normal use of the cables. In addition, when workers pull the cables, the outer skins of the cables are easily worn.

[0006] To achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A waterproof and fire-resistant power cable to improve the above problems.

[0008] Specifically, this application is as follows:

[0009] It includes three conductive wire cores. Insulation sleeves are wrapped around the outer walls of the three conductive wire cores. A waterproof sleeve is wrapped around the outer wall of the insulation sleeve. A compression-resistant layer is filled between the waterproof sleeve and the insulation sleeve. Reinforcing ribs are arranged inside the compression-resistant layer. A fireproof sleeve is wrapped around the outer wall of the waterproof sleeve. An armor layer is arranged between the waterproof sleeve and the fireproof sleeve. A protection mechanism is arranged on the outer wall of the fireproof sleeve.

[0010] As a preferred technical solution of this application, the wear-resistant sleeve, fireproof sleeve, armor layer, waterproof sleeve, compression-resistant layer, and insulation sleeve are arranged from outside to inside in sequence.

[0011] As a preferred technical solution of this application, the material of the insulation sleeve is cross-linked polyethylene.

[0012] As a preferred technical solution of this application, the material of the waterproof sleeve is high-density polyethylene.

[0013] As a preferred technical solution of the present application, the material of the fireproof sleeve is a halogen-free flame retardant material.

[0014] As a preferred technical solution of the present application, the material of the wear-resistant sleeve is nitrile rubber.

[0015] As a preferred technical solution of the present application, the protection mechanism includes rubber balls adhered to the outer wall of the wear-resistant sleeve.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the solution of the present application:

[0018] 1. By providing the waterproof sleeve and the fireproof sleeve, it has good fireproof and waterproof properties, and the fireproof material uses a halogen-free flame retardant material, which has the advantages of environmental protection, non-toxicity, low smoke, halogen-free, and oxidation resistance. It will not release toxic gases during a fire, effectively protecting the lives of personnel.

[0019] 2. By providing the compression layer and the reinforcing ribs, the compression resistance of the cable is increased, solving the problem in the prior art that when used on a construction site, the conductor inside the cable is easily damaged due to extrusion, affecting the normal use of the cable.

[0020] 3. By providing the wear-resistant sleeve, it has good wear resistance, effectively preventing the outer skin of the cable from being easily worn when workers pull the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the waterproof and fireproof power cable provided by the present application;

[0022] Figure 2 It is a schematic front sectional view of the waterproof and fireproof power cable provided by the present application;

[0023] Figure 3 It is a schematic structural diagram of the waterproof and fireproof power cable provided by the present application.

[0024] Labels in the figure:

[0025] 1, Conductive wire core; 2, Insulating sleeve; 3, Compression layer; 4, Reinforcing rib; 5, Waterproof sleeve; 6, Armor layer; 7, Fireproof sleeve; 8, Rubber ball; 9, Wear-resistant sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] Accordingly, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0029] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the inventive product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] Embodiment:

[0032] As Figures 1-3 shown, this embodiment provides a waterproof and fire-resistant power cable, which includes three conductive wire cores 1. The outer walls of the three conductive wire cores 1 are all wrapped with insulating sleeves 2. The outer wall of the insulating sleeve 2 is wrapped with a waterproof sleeve 5, and the waterproof sleeve 5 has very good waterproof performance; a compressive layer 3 is filled between the waterproof sleeve 5 and the insulating sleeve 2, and reinforcing ribs 4 are arranged in the compressive layer 3 to increase the compressive performance of the cable and prevent the internal conductors from being easily damaged after being squeezed; the outer wall of the waterproof sleeve 5 is wrapped with a fireproof sleeve 7, and the fireproof material uses a halogen-free flame-retardant material, which has the advantages of being environmentally friendly, non-toxic, low-smoke and halogen-free, and antioxidant. It will not release toxic gases during a fire, effectively ensuring the safety of personnel's lives; an armored layer 6 is arranged between the waterproof sleeve 5 and the fireproof sleeve 7, and a wear-resistant sleeve 9 is arranged on the outer wall of the fireproof sleeve 7 to make the cable have good wear-resistant performance and prevent the outer skin of the cable from being easily worn when workers pull the cable. A protection mechanism is arranged on the outer wall of the wear-resistant sleeve 9.

[0033] The wear-resistant sleeve 9, the fireproof sleeve 7, the armored layer 6, the waterproof sleeve 5, the compressive layer 3, and the insulating sleeve 2 are arranged in sequence from outside to inside.

[0034] The material of the insulating sleeve 2 is cross-linked polyethylene, which has the advantages of simple structure, light weight, good heat resistance, strong load capacity, non-melting, chemical corrosion resistance, and high mechanical strength. It will no longer melt after being heated and maintains excellent electrical performance.

[0035] To improve the waterproof performance of the cable, the material of the waterproof sleeve 5 is high-density polyethylene. High-density polyethylene is a thermoplastic resin with a relatively high degree of crystallinity, which has very good waterproof performance and also has an anti-electricity function, that is, it has insulation, so it is suitable for the laying of wires and cables, and its high temperature resistance is also very good.

[0036] To improve the fire resistance of the cable, the material of the fireproof sleeve 7 is a halogen-free flame retardant material. The halogen-free flame retardant material has the advantages of environmental protection, non-toxicity, low smoke and halogen-free, and oxidation resistance. It will not release toxic gases during a fire, effectively protecting the lives of personnel.

[0037] To improve the wear resistance of the cable, the material of the wear-resistant sleeve 9 is nitrile rubber. Nitrile rubber has good wear resistance, strong adhesion, good airtightness, and good antistatic performance, effectively preventing the outer skin of the cable from being easily worn when workers pull the cable.

[0038] To further protect the cable, the protection mechanism includes rubber balls 8 adhered to the outer wall of the wear-resistant sleeve 9. The rubber balls 8 can further protect the cable, and when the cable is placed on the ground, it can prevent the cable from directly contacting the ground and avoid moisture.

[0039] Specifically, the waterproof sleeve 5 and the fireproof sleeve 7 enable the cable to have good fire and waterproof performance. Moreover, the fireproof material uses a halogen-free flame retardant material, which has the advantages of environmental protection, non-toxicity, low smoke and halogen-free, and oxidation resistance. It will not release toxic gases during a fire, effectively protecting the lives of personnel; and there are reinforcing ribs 4 arranged inside the internal compression layer 3. Both the compression layer 3 and the reinforcing ribs 4 can improve the compressive performance and prevent the internal conductor from being easily damaged after being squeezed; in addition, a wear-resistant sleeve 9 is arranged on the outermost layer of the cable, making it have good wear resistance and preventing the outer skin of the cable from being easily worn when workers pull the cable.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiment is a preferred implementation scheme of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A waterproof and fire-resistant power cable, comprising three conductive cores (1), characterized in that: The outer walls of the three conductive wire cores (1) are all wrapped with an insulating sleeve (2), the outer wall of the insulating sleeve (2) is wrapped with a waterproof sleeve (5), a pressure-resistant layer (3) is filled between the waterproof sleeve (5) and the insulating sleeve (2), a reinforcing rib (4) is arranged inside the pressure-resistant layer (3), the outer wall of the waterproof sleeve (5) is wrapped with a fireproof sleeve (7), an armor layer (6) is arranged between the waterproof sleeve (5) and the fireproof sleeve (7), the outer wall of the fireproof sleeve (7) is provided with a wear-resistant sleeve (9), and the outer wall of the wear-resistant sleeve (9) is provided with a protective mechanism.

2. A waterproof and fire-resistant power cable according to claim 1, characterized in that: The wear-resistant sleeve (9), fireproof sleeve (7), armor layer (6), waterproof sleeve (5), pressure-resistant layer (3), and insulating sleeve (2) are arranged in sequence from the outside to the inside.

3. A waterproof and fire-resistant power cable according to claim 2, characterized in that: The insulating sleeve (2) is made of cross-linked polyethylene.

4. A waterproof and fire-resistant power cable according to claim 2, characterized in that: The waterproof cover (5) is made of high-density polyethylene.

5. A waterproof and fire-resistant power cable according to claim 2, characterized in that: The material of the fireproof sleeve (7) is halogen-free flame-retardant material.

6. A waterproof and fire-resistant power cable according to claim 2, characterized in that: The material of the wear-resistant sleeve (9) is nitrile rubber.

7. A waterproof and fire-resistant power cable according to claim 1, characterized in that: The protection mechanism comprises a rubber ball (8) bonded to the outer wall of the wear-resistant sleeve (9).

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