Silicone rubber insulated cable

Abstract

The utility model provides a silicone rubber insulated cable, which relates to the technical field of cables and comprises a plurality of cable conductors, shielding layers are arranged on the surfaces of the cable conductors, a filling layer is arranged on the surfaces of the shielding layers, reinforcing filler is filled in the filling layer, and a protective layer is arranged on the surface of the filling layer. According to the utility model, the shielding layer is arranged on the surface of the cable conductor, the filling layer and the reinforcing filler are arranged on the surface of the shielding layer for protection, the protective layer is wrapped on the surface of the filling layer, and the insulating layer is made of silicon rubber, so that the cable can be applied to a high-voltage and high-temperature working environment; and the reinforcing filler adopts a glass fiber tape material, so that the cable has the advantages of water resistance, high temperature resistance, heat preservation and heat insulation, the strength of the cable is improved, the cable has higher resistance to external erosion, and the service life is prolonged.

Description

Technical Field

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

[0002] With the development of society, cables have become an increasingly important role in infrastructure construction. They are used in various places in people's daily life and production. In order to adapt to different usage requirements, the different demands on cables are becoming more and more diversified. They need to be moisture-proof, exposure-proof, cold-resistant, heat-resistant, and UV-resistant. In some special environments, they also need to be resistant to acid, alkali and other chemical materials.

[0003] In the prior art, traditional insulated cables are mostly made of PVC material, but this material has poor tolerance to heat and flame and is not suitable for high voltage and high temperature working environments. In addition, the cables are mostly laid outdoors and the installation cost is high. Traditional cables have certain defects in resistance to external corrosion, which affects their service life.

[0004] Therefore, a silicone rubber insulated cable is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a silicone rubber insulated cable, comprising: a plurality of cable conductors, the surfaces of the plurality of cable conductors are all provided with a shielding layer, the surfaces of the plurality of shielding layers are provided with a filling layer, the interior of the filling layer is filled with a reinforcing filler, and the surface of the filling layer is provided with a protective layer.

[0007] As a preferred embodiment, the shielding layer includes a conductor shield, the conductor shield is wrapped on the surface of the cable conductor, the surface of the conductor shield is wrapped with an insulating layer, the surface of the insulating layer is wrapped with an insulating shield, and the surface of the insulating shield is wrapped with a metal shield.

[0008] As a preferred implementation, the insulating layer is made of silicone rubber.

[0009] As a preferred embodiment, the protective layer includes an inner sheath, the inner sheath is wrapped on the surface of the filling layer, the surface of the inner sheath is wrapped with steel belt armor, and the surface of the steel belt armor is wrapped with the sheath.

[0010] As a preferred implementation, the filling layer is made of polyethylene.

[0011] As a preferred implementation, the reinforcing filler is made of glass fiber tape.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. The utility model has a shielding layer on the surface of the cable conductor, a filling layer and a reinforcing filler on the surface of the shielding layer for protection, and a protective layer wrapped on the surface of the filling layer, wherein the insulating layer is made of silicone rubber. Silicone rubber refers to a rubber whose main chain is composed of alternating silicon and oxygen atoms, and the silicon atom is usually connected to two organic groups. Ordinary silicone rubber is mainly composed of siloxane chain segments containing methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the heat resistance and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance and can generally work at -55°C. After the introduction of phenyl, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 180°C, and can withstand several weeks or longer at a temperature slightly higher than 200°C and still be elastic. It can instantly withstand high temperatures above 300°C, so that the cable can be used in high voltage and high temperature working environments.

[0014] 2. In the utility model, the surface of the shielding layer is wrapped with a filling layer and a reinforcing filler. The filling layer is made of polyethylene, which is a common cable filler. It has good wettability, heat resistance, mechanical strength and toughness, can protect the insulation and core wire of the cable, and prevent the entry of water. The reinforcing filler is made of glass fiber tape, which is made of high-temperature resistant and high-strength glass fiber and processed by special technology. It has the characteristics of high temperature resistance, thermal insulation, insulation, fire retardant, corrosion resistance, aging resistance, weather resistance, high strength, smooth appearance, etc. Through the coordinated protection of the filling layer and the reinforcing filler, the cable has the advantages of waterproof and high temperature resistance, thermal insulation, and at the same time improves the strength of the cable, so that the cable has a stronger resistance to external erosion and improves its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main body of a silicone rubber insulated cable provided by the utility model;

[0016] Figure 2 A cross-sectional view of a silicone rubber insulated cable provided by the utility model;

[0017] Figure 3 A cross-sectional structural diagram of the shielding layer of a silicone rubber insulated cable provided by the utility model;

[0018] Figure 4 The utility model provides a cross-sectional structural diagram of the protective layer of a silicone rubber insulated cable.

[0019] Legend:

[0020] 1. Cable conductor; 2. Shielding layer; 201. Conductor shield; 202. Insulation layer; 203. Insulation shield; 204. Metal shield; 3. Filling layer; 4. Reinforced filler; 5. Protective layer; 501. Inner sheath; 502. Steel tape armor; 503. Sheath. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a silicone rubber insulated cable, comprising: a plurality of cable conductors 1, a shielding layer 2 is arranged on the surface of the plurality of cable conductors 1, a filling layer 3 is arranged on the surface of the plurality of shielding layers 2, the interior of the filling layer 3 is filled with a reinforcing filler 4, and a protective layer 5 is arranged on the surface of the filling layer 3.

[0023] Specifically: the shielding layer 2 eliminates the increase in surface electric field strength caused by the rough surface of the cable conductor 1 and the inner sheath 501, the filling layer 3 and the reinforcing filler 4 enhance the overall strength and resistance of the device and increase the service life, and the protective layer 5 plays a protective role.

[0024] In one embodiment, the shielding layer 2 includes a conductor shield 201 , which is wrapped around the surface of the cable conductor 1 , and the surface of the conductor shield 201 is wrapped with an insulating layer 202 , and the surface of the insulating layer 202 is wrapped with an insulating shield 203 , and the surface of the insulating shield 203 is wrapped with a metal shield 204 .

[0025] Specifically: The main function of the conductor shield 201 is to make the electric field on the surface of the conductor uniform and prevent local discharge caused by gaps between the conductor and the insulation layer; the main function of the insulation shield 203 is to make the electric field on the outer surface of the insulation uniform and protect the insulation from damage; the metal shield 204 is to form a closed metal shielding structure by covering a layer of metal material on the outside of the cable to shield the signal inside the cable, thereby preventing external electromagnetic interference; the main functions of the insulation 202 include ensuring the safe transmission of electric energy, preventing current leakage and electric shock accidents, isolating wires to prevent people from being injured by electric shock, reducing external interference, and increasing the service life of the cable and reducing energy consumption.

[0026] In one embodiment, the insulating layer 202 is made of silicone rubber.

[0027] Specifically: the insulating layer 202 is made of silicone rubber. Silicone rubber refers to a rubber whose main chain is composed of alternating silicon and oxygen atoms, and the silicon atom is usually connected to two organic groups. Ordinary silicone rubber is mainly composed of siloxane chains containing methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the heat and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance and can generally still work at -55°C. After the introduction of phenyl, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 180°C, and can withstand several weeks or longer at slightly higher than 200°C and still be elastic. It can instantly withstand high temperatures above 300°C.

[0028] In one embodiment, the protective layer 5 includes an inner sheath 501 , which is wrapped around the surface of the filling layer 3 , and the surface of the inner sheath 501 is wrapped with a steel belt armor 502 , and the surface of the steel belt armor 502 is wrapped with a sheath 503 .

[0029] Specifically: the inner sheath 501 protects the cable conductor 1 and the shielding layer 2 to prevent the cable conductor 1 and the shielding layer 2 from being damaged by external environmental factors such as water, air, chemicals, etc. The steel belt armor 502 enhances the mechanical strength, improves the protection capability, and resists low-frequency interference. The sheath 503 protects the cable from moisture and corrosion. The inner sheath 501 and the sheath 503 can also be made of silicone rubber to enhance the insulation and corrosion and moisture resistance.

[0030] In one embodiment, the filling layer 3 is made of polyethylene.

[0031] Specifically: the filling layer 3 is made of polyethylene. Polyethylene filler is a common cable filler. It has good wettability, heat resistance, mechanical strength and toughness, can protect the insulation and core wire of the cable, and prevent the entry of moisture.

[0032] In one embodiment, the reinforcing filler 4 is made of glass fiber tape.

[0033] Specifically: The reinforcing filler 4 is made of glass fiber tape, which is made of high-temperature resistant and high-strength glass fiber and processed by special technology. It has the characteristics of high temperature resistance, thermal insulation, insulation, fire retardancy, corrosion resistance, aging resistance, weather resistance, high strength, and smooth appearance.

[0034] Working principle: In the utility model, a shielding layer 2 is arranged on the surface of the cable conductor 1, a filling layer 3 and a reinforcing filler 4 are arranged on the surface of the shielding layer 2 for protection, and a protective layer 5 is wrapped on the surface of the filling layer 3, wherein the insulating layer 202 is made of silicone rubber. Silicone rubber refers to a rubber whose main chain is composed of alternating silicon and oxygen atoms, and the silicon atom is usually connected to two organic groups. Ordinary silicone rubber is mainly composed of siloxane chain segments containing methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the heat resistance and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance and can generally still work at -55°C. After the introduction of phenyl, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 180℃, and can withstand several weeks or longer at a temperature slightly higher than 200℃ and still be elastic. It can withstand high temperatures above 300℃ instantly, so that the cable can be used in high-voltage and high-temperature working environments. The surface of the shielding layer 2 is wrapped with a filling layer 3 and a reinforcing filler 4. The filling layer 3 is made of polyethylene. Polyethylene filler is a common cable filler. It has good wettability, heat resistance, mechanical strength and toughness, can protect the insulation and core wire of the cable, and prevent the entry of water. The reinforcing filler 4 is made of glass fiber tape. The glass fiber tape is made of high-temperature resistant and high-strength glass fiber and is processed by special technology. It has the characteristics of high temperature resistance, thermal insulation, insulation, fire retardant, corrosion resistance, aging resistance, weather resistance, high strength, smooth appearance, etc. Through the coordinated protection of the filling layer 3 and the reinforcing filler 4, the cable has the advantages of waterproof and high temperature resistance, thermal insulation, and at the same time improves the strength of the cable, so that the cable has a stronger resistance to external erosion and improves its service life.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A silicone rubber insulated cable, characterized in that: include: A plurality of cable conductors (1), each of the plurality of cable conductors (1) being provided with a shielding layer (2) on its surface, a filling layer (3) being provided on its surface, the interior of the filling layer (3) being filled with a reinforcing filler (4), and a protective layer (5) being provided on its surface.

2. A silicone rubber insulated cable according to claim 1, characterized in that: The shielding layer (2) comprises a conductor shield (201), wherein the conductor shield (201) is wrapped around the surface of the cable conductor (1), wherein the surface of the conductor shield (201) is wrapped with an insulating layer (202), wherein the surface of the insulating layer (202) is wrapped with an insulating shield (203), and wherein the surface of the insulating shield (203) is wrapped with a metal shield (204).

3. A silicone rubber insulated cable according to claim 2, characterized in that: The insulating layer (202) is made of silicone rubber.

4. The silicone rubber insulated cable according to claim 1, characterized in that: The protective layer (5) comprises an inner sheath (501), wherein the inner sheath (501) is wrapped on the surface of the filling layer (3), the surface of the inner sheath (501) is wrapped with a steel belt armor (502), and the surface of the steel belt armor (502) is wrapped with a sheath (503).

5. The silicone rubber insulated cable according to claim 1, characterized in that: The filling layer (3) is made of polyethylene.

6. The silicone rubber insulated cable according to claim 1, characterized in that: The reinforcing filler (4) is made of glass fiber tape.

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