Radiation-proof and anti-interference signal cable

Abstract

The utility model discloses an anti -radiation anti -interference signal cable relates to cable technical field, solved the poor anti -interference ability of existing cable inner shielding layer, the signal transmission of communication cable is influenced, and the existing cable structure strength is insufficient, and the cable inside is easy to bend, thereby damaging its overall performance's technical problem, including conductor, insulating layer and outer sheath, wherein, insulating layer is wrapped in the outside of conductor, and insulating layer is polypropylene material, still include: buffer layer, is wrapped in the outside of insulating layer, and buffer layer is semiconductive polyester non -woven fiber cloth, shielding layer, shielding layer is divided into inner shielding layer and outer shielding layer, and inner shielding layer sets up between buffer layer inside and insulating layer outside, the utility model discloses through the joint action of inner and outer shielding layer and filling layer, can increase the anti -interference radiation resistance of cable, so that communication cable can normally transmit signal. In addition, the cable has the characteristics of high structural strength, high compression resistance and high bending resistance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable technical field especially relates to a kind of anti-radiation anti-interference signal cable. BACKGROUND

[0002] Cable is important material for power, communication and related transmission purposes, used to connect circuit, electrical equipment and the like, to realize the transmission of electric energy or signal transmission. It is a transmission medium similar to a rope made of several or several groups of wires (at least two wires in each group), each group of wires is insulated from each other, and is usually twisted around a central one, and the whole outside is covered with a highly insulating cover layer.

[0003] Currently, the communication cable on the market in the process of use, to avoid external interference, generally installs shielding layer inside communication cable.

[0004] However, the single shielding layer has poor anti-interference ability, which affects the signal transmission of the communication cable. In addition, the existing anti-radiation and anti-interference signal cable also has the problem of insufficient structural strength. After long-term use, the cable inside is easy to bend, thereby damaging its overall performance. Therefore, based on the above problems, we design an anti-radiation and anti-interference signal cable. UTILITY MODEL CONTENT

[0005] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides an anti-radiation and anti-interference signal cable, which solves the technical problem that the single shielding layer inside the existing cable has poor anti-interference ability, which affects the signal transmission of the communication cable. In addition, the existing anti-radiation and anti-interference signal cable also has the problem of insufficient structural strength. After long-term use, the cable inside is easy to bend, thereby damaging its overall performance.

[0006] To achieve the above purpose, according to the first aspect of the utility model embodiment, an anti-radiation and anti-interference signal cable is provided, which comprises a conductor, an insulating layer and an outer sheath;

[0007] Wherein, the insulating layer is wrapped outside the conductor, and the insulating layer is made of polypropylene material;

[0008] Further comprising:

[0009] The buffer layer is wrapped outside the insulating layer, and the buffer layer is made of semi-conductive polyester non-woven fabric;

[0010] The shielding layer is divided into an inner shielding layer and an outer shielding layer, the inner shielding layer is arranged between the buffer layer inside and the insulating layer outside, and the outer shielding layer is arranged between the outer sheath inside and the buffer layer outside;

[0011] The reinforcing layer is wrapped outside the outer shielding layer and inside the outer sheath, the outer sheath is provided with a fire-retardant layer and a waterproof layer, and the fire-retardant layer is wrapped outside the waterproof layer.

[0012] Further improvement lies in that the inner shielding layer is made of semi-conductive material, such as semi-conductive rubber and semi-conductive plastic, and the outer shielding layer is made of one of metal foil material, metal strip and metal woven mesh.

[0013] Further improvement lies in that the filling layer is made of glass fiber and polyurethane.

[0014] Further improvement lies in that the fire-retardant layer is made of one of mineral insulation material and polymer modified material, and the waterproof layer is made of one of polyethylene propylene and polyvinyl chloride material.

[0015] Further improvement lies in that the outer surface of the outer sheath is coated with a paint layer, the paint layer comprises a fire-retardant paint layer and an oxidation-resistant corrosion-resistant paint layer, the fire-retardant paint layer is one of silicone ester cable fire-retardant paint and epoxy cable fire-retardant paint, and the oxidation-resistant corrosion-resistant paint layer is one of polyurethane corrosion-resistant paint, epoxy corrosion-resistant paint and inorganic silicate corrosion-resistant paint.

[0016] Further improvement lies in that the reinforcing layer is a plurality of metal bars wrapped outside the filling layer respectively, and rubber is filled between each adjacent metal bar.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] The utility model discloses a metal isolation principle is utilized, designs inner shielding layer and outer shielding layer, can effectively shield the interference of outside electromagnetic field, protects the signal inside cable and is not influenced, has improved cable's anti -jamming radiation ability significantly, and the buffer layer can provide additional protection and support because of good electrical performance and mechanical performance, ensures that cable still can normally work under the harsh environment.

[0019] The utility model discloses a metal isolation principle is utilized, designs inner shielding layer and outer shielding layer, can effectively shield the interference of outside electromagnetic field, protects the signal inside cable and is not influenced, has improved cable's anti -jamming radiation ability significantly, and the buffer layer can provide additional protection and support because of good electrical performance and mechanical performance, ensures that cable still can normally work under the harsh environment.

[0020] The utility model discloses a metal isolation principle is utilized, designs inner shielding layer and outer shielding layer, can effectively shield the interference of outside electromagnetic field, protects the signal inside cable and is not influenced, has improved cable's anti -jamming radiation ability significantly, and the buffer layer can provide additional protection and support because of good electrical performance and mechanical performance, ensures that cable still can normally work under the harsh environment.

[0021] The utility model discloses a filling layer is designed, is arranged between reinforcing layer and outer shield layer, and the filling layer is made of the composite of glass fiber and polyurethane, and the glass fiber provides structural strength and heat resistance, and the polyurethane has excellent elasticity and heat insulation performance, thereby can effectively prevent heat transfer and reduce thermal stress, realizes the heat insulation protection effect to cable, effectively avoids the damage of cable high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the section structure schematic diagram of the utility model outer sheath and is wrapped on the conductor;

[0024] Figure 3 It is the section structure schematic diagram of the utility model outer sheath and is wrapped on the reinforcing layer.

[0025] Mark in the drawing:

[0026] 1, insulating layer;

[0027] 2, conductor;

[0028] 3, outer sheath; 31, flame -retardant layer; 32, waterproof layer; 33, coating layer; 301, flame -retardant fire -retardant coating layer; 302, antioxidant corrosion -resistant coating layer;

[0029] 4, buffer layer;

[0030] 5, shielding layer; 51, inner shield layer; 52, outer shield layer;

[0031] 6, reinforcing layer; 61, metal bar; 62, rubber;

[0032] 7, filling layer. DETAILED DESCRIPTION

[0033] The technical scheme of the utility model will be described clearly and completely in connection with examples, and obviously, the described examples are only a part of the examples of the utility model, not all the examples. Based on the examples in the utility model, all other examples obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0034] As Figure 1 And Figure 2 Shown, a kind of anti-radiation anti-interference signal cable, including conductor 2, insulating layer 1 and outer sheath 3;Wherein, insulating layer 1 is wrapped in the outside of conductor 2, and insulating layer 1 is polypropylene material;

[0035] The buffer layer 4 is wrapped outside the insulation layer 1, and the buffer layer 4 is implemented by selecting a semi-conductive polyester non-woven fabric;

[0036] The shielding layer 5 is divided into an inner shielding layer 51 and an outer shielding layer 52, the inner shielding layer 51 is arranged between the buffer layer 4 and the outside of the insulation layer 1, and the outer shielding layer 52 is arranged between the inside of the outer sheath 3 and the outside of the buffer layer 4;

[0037] Specifically, the inner shielding layer 51 is made of a semi-conductive material, such as semi-conductive rubber or semi-conductive plastic. Taking the semi-conductive rubber as an example, the outer shielding layer 52 is one of a metal foil material, a metal strip, and a metal woven mesh. In this embodiment, the metal foil material of the outer shielding layer 52 is taken as an example. The inner shielding layer 51 and the outer shielding layer 52 effectively shield the interference of the external electromagnetic field through the metal isolation principle, protect the internal signals of the cable from being affected, and significantly improve the anti-interference and anti-radiation ability of the cable. The buffer layer 4 has good electrical and mechanical properties, and can provide additional protection and support to ensure that the cable can still work normally in harsh environments;

[0038] As shown in the figure, Figure 2 In this embodiment, another implementation scheme is additionally provided, which includes a filling layer 7 arranged between the reinforcing layer 6 and the outer shielding layer 52. The filling layer 7 is composed of glass fiber and polyurethane. The glass fiber provides structural strength and heat resistance, and the polyurethane has excellent elasticity and heat insulation performance, thereby effectively preventing heat transfer and reducing thermal stress, achieving the heat insulation protection effect of the cable, and effectively avoiding damage of the cable caused by high temperature;

[0039] As shown in the figure, Figure 2 In this embodiment, another implementation scheme is additionally provided, and the reinforcing layer 6 is arranged inside the outer sheath 3. The reinforcing layer 6 is wrapped outside the filling layer 7. The reinforcing layer 6 is a plurality of metal bars 61 wrapped on the outer shielding layer 52, and rubber 62 is filled between adjacent metal bars 61. Through the action of the metal bars 61 and the rubber 62, the strength, compression resistance, and bending resistance of the cable can be increased, and the service life of the cable can be prolonged;

[0040] As shown in the figure, Figure 3 In this embodiment, another implementation scheme is additionally provided, and the outer sheath 3 is provided with a flame-retardant layer 31 and a waterproof layer 32. The flame-retardant layer 31 is wrapped outside the waterproof layer 32. The flame-retardant layer 31 is one of a mineral insulation material and a polymer modified material. Taking the mineral insulation material as an example, the waterproof layer 32 is one of polyethylene propylene and polyvinyl chloride material;

[0041] Specifically, the outer surface of the outer sheath 3 is coated with a coating layer 33, the coating layer 33 includes a flame-retardant fireproof coating layer 301 and an oxidation-resistant corrosion-resistant coating layer 302, the flame-retardant fireproof coating layer 301 is one of silicone ester cable fireproof coating and epoxy cable fireproof coating, taking the silicone ester cable fireproof coating as an example, the oxidation-resistant corrosion-resistant coating layer 302 is one of polyurethane anticorrosive coating, epoxy anticorrosive paint and inorganic silicate anticorrosive coating, taking the polyurethane anticorrosive coating as an example, the design of the flame-retardant layer 31 and the coating layer 33 can improve the flame-retardant performance of the cable to a certain extent, reduce the damage of fire to the cable, prevent the cable from being corroded in a chemical environment, slow down the aging degree of the cable, and further prolong the service life of the cable.

[0042] As shown in Figures 1 to 3 the present embodiment, the materials in the front coating layer 33 and each layer are selected before manufacturing. It should be noted that the present application only aims at the poor anti-interference ability of the single shielding layer in the existing cable, which affects the signal transmission of the communication cable. In addition, the existing anti-radiation and anti-interference signal cable also has the problem of insufficient structural strength, and the cable inside is easy to bend after long-term use, thereby damaging the overall performance. The present application improves the above-mentioned shortcomings and does not involve other aspects. The working principle of the anti-radiation and anti-interference signal cable is introduced as follows.

[0043] The present application, by the metal isolation principle, designs the inner shielding layer 51 and the outer shielding layer 52, which can effectively shield the interference of the external electromagnetic field, protect the internal signals of the cable, and significantly improve the anti-interference and anti-radiation ability of the cable. The buffer layer 4 has good electrical and mechanical properties, which can provide additional protection and support to ensure that the cable can still work normally in harsh environments. In addition, the inner part of the outer sheath 3 is provided with a reinforcing layer 6, the reinforcing layer 6 is wrapped outside the outer shielding layer 52, the reinforcing layer 6 is a plurality of metal bars 61, each of which is wrapped on the outer shielding layer 52, and rubber 62 is filled between adjacent metal bars 61. Through the action of the metal bars 61 and the rubber 62, the strength, compression resistance and bending resistance of the cable can be increased, and the service life of the cable can be prolonged.

[0044] In addition, the design of the flame-retardant layer 31 and the coating layer 33 can improve the flame-retardant performance of the cable to a certain extent, reduce the damage of fire to the cable, prevent the cable from being corroded in a chemical environment, slow down the aging degree of the cable, and further prolong the service life of the cable. By designing the filling layer 7 between the reinforcing layer 6 and the outer shielding layer 52, the filling layer 7 is composed of glass fiber and polyurethane. The glass fiber provides structural strength and heat resistance, and the polyurethane has excellent elasticity and heat insulation performance, so as to effectively prevent heat transfer and reduce thermal stress, realize the heat insulation protection of the cable, and effectively avoid the damage of the cable due to high temperature.

[0045] The above embodiments are only used to illustrate the technical method of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present application.

Claims

1. A radiation-proof and anti-interference signal cable, comprising a conductor (2), an insulating layer (1) and an outer sheath (3); wherein the insulating layer (1) is wrapped outside the conductor (2), and the insulating layer (1) is made of polypropylene material; characterized in that it further comprises: a buffer layer (4) wrapped outside the insulating layer (1), the buffer layer (4) being a semi-conductive polyester non-woven fabric; a shielding layer (5), the shielding layer (5) being divided into an inner shielding layer (51) and an outer shielding layer (52), the inner shielding layer (51) being arranged between the inside of the buffer layer (4) and the outside of the insulating layer (1), and the outer shielding layer (52) being arranged between the inside of the outer sheath (3) and the outside of the buffer layer (4); a reinforcing layer (6) wrapped outside the outer shielding layer (52) and inside the outer sheath (3), the outer sheath (3) being provided with a flame-retardant layer (31) and a waterproof layer (32), the flame-retardant layer (31) being wrapped outside the waterproof layer (32).

2. The anti-radiation anti-interference signal cable according to claim 1, characterized in that, The inner shielding layer (51) is made of semi-conductive material, such as semi-conductive rubber or semi-conductive plastic, and the outer shielding layer (52) is made of one of a metal foil material, a metal strip and a metal woven mesh.

3. The anti-radiation anti-interference signal cable according to claim 1, characterized in that, It further comprises a filling layer (7) arranged between the reinforcing layer (6) and the outer shielding layer (52), the filling layer (7) being made of a composite of glass fiber and polyurethane.

4. The anti-radiation and anti-jamming signal cable according to claim 1, characterized in that, The flame-retardant layer (31) is made of one of a mineral insulating material and a polymer modified material, and the waterproof layer (32) is made of one of polyethylene propylene, polyvinyl chloride material.

5. The anti-radiation and anti-jamming signal cable according to claim 1, characterized in that, The outer surface of the outer sheath (3) is coated with a paint layer (33), and the paint layer (33) comprises a flame-retardant fireproof paint layer (301) and an antioxidant corrosion-resistant paint layer (302), the flame-retardant fireproof paint layer (301) being one of silicone ester cable fireproof paint and epoxy cable fireproof paint, and the antioxidant corrosion-resistant paint layer (302) being one of polyurethane corrosion-resistant paint, epoxy corrosion-resistant paint and inorganic silicate corrosion-resistant paint.

6. The anti-radiation anti-jamming signal cable according to claim 3, characterized in that, The reinforcing layer (6) is a plurality of metal bars (61) wrapped outside the filling layer (7) in a circular shape, and rubber (62) is filled between adjacent metal bars (61).

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