Highly shielded torque control cable

Abstract

The utility model discloses a kind of anti-torque control cables of high shielding effectiveness, belong to cable field, comprising: a plurality of conductor assemblies;Sub-screening layer, including first shielding layer and current-carrying wire, first shielding layer is wrapped in a plurality of conductor assemblies outside, current-carrying wire is resisted to first shielding layer outside;Sub-screening layer wrapped in first shielding layer outside, current-carrying wire is located in sub-screening layer inside;Total shielding layer, including second shielding layer and third shielding layer wrapped in sub-screening layer outside in turn;Outer sheath wrapped in third shielding layer outside, the material of outer sheath is thermoplastic vulcanized rubber.Conductor assembly includes: a plurality of conductor units;Sub-twisted layer wrapped in a plurality of conductor units outside, first shielding layer is wrapped in sub-twisted layer outside.The technical effect of the utility model is in that it not only has high shielding effectiveness, and it is not easy to crack after repeated torsional deformation.

Description

Technical Field

[0001] This utility model relates to cables, and more particularly to a high-shielding-efficiency anti-torque control cable. Background Technology

[0002] Control cables are power cables used to transmit control signals and operating instructions. They are mainly used in electrical equipment, automation systems, or industrial installations to enable remote control, monitoring, and protection of machinery and instruments.

[0003] To increase shielding effectiveness, control cables generally use a single-layer shielding structure (such as aluminum foil or copper wire braiding), but this can still easily lead to insufficient shielding effectiveness. In addition, control cables are prone to cracking after repeated torsion and deformation, which can damage the shielding layer and shorten their service life. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a high shielding efficiency anti-torque control cable, which not only has high shielding efficiency, but is also not easy to crack after repeated torsion deformation.

[0005] Technical solution:

[0006] A high-shielding, torque-resistant control cable, comprising:

[0007] Several conductor components;

[0008] The shielding layer includes a first shielding layer and a drain wire. The first shielding layer is wrapped around a plurality of the conductor components, and the drain wire abuts against the outside of the first shielding layer.

[0009] A screen wrapping layer is wrapped around the first shielding layer, and the drainage line is located inside the screen wrapping layer;

[0010] The overall shielding layer includes a second shielding layer and a third shielding layer that are sequentially wrapped around the sub-screen wrapping layer;

[0011] The outer sheath, which is wrapped around the third shielding layer, is made of thermoplastic vulcanized rubber.

[0012] Optionally, the conductor assembly includes:

[0013] Several conductor units;

[0014] A twisted-pair wrapping layer is wrapped around several conductor units, and the first shielding layer is wrapped around the twisted-pair wrapping layer.

[0015] Optionally, the conductor unit includes:

[0016] Conductor body;

[0017] A fire-resistant layer, an inner insulation layer, and an outer insulation layer are sequentially wrapped around the conductor body, and the twisted cladding is wrapped around the outer insulation layer.

[0018] Optionally, it also includes a filling layer and a cabling wrapping layer that are sequentially wrapped between the screen wrapping layer and the second shielding layer.

[0019] Optionally, the filling layer is made of flame-retardant filling rope, and the cabling wrapping layer is made of ceramicized halogen-free, low-smoke, and highly flame-retardant tape.

[0020] Optionally, it also includes an oxygen barrier layer and an armor layer that are sequentially wrapped between the third shielding layer and the outer sheath.

[0021] Optionally, the oxygen barrier layer is made of ceramicized halogen-free low-smoke polyolefin oxygen barrier material, and the armor layer is made of hot-dip galvanized steel strip.

[0022] Optionally, several of the conductor assemblies are uniformly arranged along the circumference of the first shielding layer.

[0023] Beneficial effects:

[0024] (1) The combination of the sub-shielding layer and the main shielding layer makes the control cable of this scheme have high shielding effectiveness, which can ensure the stability and accuracy of signal transmission, reduce signal attenuation and distortion, and improve the reliability and security of the system.

[0025] (2) The outer sheath is used for protection. The thermoplastic vulcanized rubber combines the properties of rubber and plastic through dynamic vulcanization technology, combining the flexibility of elastomer and the processing efficiency of plastic. It also meets the requirements of high performance, environmental protection and lightweight, making the outer sheath have excellent resistance to torsional permanent deformation, so that the control cable of this solution is not easy to crack after repeated torsional deformation. Attached Figure Description

[0026] Figure 1 This is a structural diagram of a high-shielding, torque-resistant control cable according to Embodiment 1 of this utility model;

[0027] Figure 2 This is a structural diagram of the conductor assembly of Embodiment 1 of this utility model;

[0028] In the diagram: 1. Conductor assembly; 11. Conductor unit; 111. Conductor body; 112. Fire-resistant layer; 113. Inner insulation layer; 114. Outer insulation layer; 12. Twisted pair wrapping layer; 2. Sub-shielding layer; 21. First shielding layer; 22. Drain wire; 3. Sub-shielding wrapping layer; 4. Overall shielding layer; 42. Second shielding layer; 43. Third shielding layer; 5. Outer sheath; 6. Filler layer; 7. Cable wrapping layer; 8. Oxygen barrier layer; 9. Armoring layer. Detailed Implementation

[0029] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0031] Example 1

[0032] like Figure 1 This embodiment provides a high-shielding torque-resistant control cable, comprising: a plurality of conductor assemblies 1; a sub-shielding layer 2, including a first shielding layer 21 and a drain wire 22, wherein the first shielding layer 21 is wrapped around the plurality of conductor assemblies 1 and the drain wire 22 abuts against the outside of the first shielding layer 21; a sub-shielding wrapping layer 3 wrapped around the first shielding layer 21, wherein the drain wire 22 is located inside the sub-shielding wrapping layer 3; a total shielding layer 4, including a second shielding layer 42 and a third shielding layer 43 wrapped around the sub-shielding wrapping layer 3 in sequence; and an outer sheath 5 wrapped around the third shielding layer 43, wherein the outer sheath 5 is made of thermoplastic vulcanized rubber.

[0033] Specifically, conductor assembly 1 is used for signal transmission. The number of conductor assemblies 1 is not limited and can be three, four, etc., preferably three. The first shielding layer 21, together with the guide wire 22, forms a sub-shielding layer 2 to prevent signal crosstalk. The material of the first shielding layer 21 is preferably aluminum-magnesium alloy foil, and the material of the guide wire 22 is preferably tin-plated copper wire, which is more cost-effective than copper wire sub-shielding. The second shielding layer 42, together with the third shielding layer 43, forms a total shielding layer 4, adopting a double-layer structure to ensure excellent shielding performance. The material of the second shielding layer 42 is preferably aluminum-magnesium alloy foil, and the material of the third shielding layer 43 is preferably tin-plated copper wire braid. The sub-shielding layer 2 and The main shielding layers 4 are interconnected, which facilitates the high shielding effectiveness of the control cable in this solution, ensuring the stability and accuracy of signal transmission, reducing signal attenuation and distortion, and improving the reliability and security of the system. The sub-shielded wrapping layer 3 is used for insulation, and the material of the sub-shielded wrapping layer 3 is preferably polyester tape. The outer sheath 5 is used for protection. Thermoplastic vulcanized rubber combines the properties of rubber and plastic through dynamic vulcanization technology, combining the flexibility of elastomers and the processing efficiency of plastics. It also meets the requirements of high performance, environmental protection and lightweight, which makes the outer sheath 5 have excellent resistance to torsional permanent deformation, so that the control cable of this solution is not easy to crack after repeated torsional deformation.

[0034] Furthermore, such as Figures 1-2 The conductor assembly 1 includes: a plurality of conductor units 11; a twisted sheath 12 wrapped around the plurality of conductor units 11, and a first shielding layer 21 wrapped around the twisted sheath 12.

[0035] Specifically, conductor unit 11 is used for signal transmission, and the number of conductor units 11 is not limited, and can be two, three, etc., preferably two; the stranded sheath 12 is used for insulation and also has a certain mechanical strength, and the material of the stranded sheath 12 is preferably polyester tape.

[0036] Furthermore, such as Figures 1-2 The conductor unit 11 includes: a conductor body 111; a fire-resistant layer 112, an inner insulation layer 113, and an outer insulation layer 114 sequentially wrapped around the conductor body 111, and a stranded sheath 12 wrapped around the outer insulation layer 114.

[0037] Specifically, the conductor body 111 is used for signal transmission, and the conductor body 111 is preferably made of tin-plated copper conductor with a copper content of ≥99.95% and low resistivity; the fire-resistant layer 112 is preferably made of two layers of 0.14mm calcined mica tape wrapped in an overlapping manner to prevent short circuits or open circuits of the wire core caused by flame combustion, which can effectively protect the line and provide more protection for escape or rescue; the inner insulation layer 113 is used for insulation, and the material of the inner insulation layer 113 is preferably thermoplastic polyurethane; the outer insulation layer 114 is used for insulation, and the material of the outer insulation layer 114 is preferably thermoplastic halogen-free low-smoke flame-retardant polyolefin insulation material.

[0038] Furthermore, such as Figure 1 It also includes a filling layer 6 and a cabling wrapping layer 7, which are sequentially wrapped between the split-screen wrapping layer 3 and the second shielding layer 42.

[0039] Furthermore, such as Figure 1 The filling layer 6 is made of flame-retardant filling rope, and the cable wrapping layer 7 is made of ceramicized halogen-free low-smoke high flame-retardant tape.

[0040] Specifically, the flame-retardant filler rope facilitates the flame-retardant performance of the filler layer 6; the ceramicized halogen-free, low-smoke, and highly flame-retardant tape facilitates the formation of a shell on the cable wrapping layer 7 after exposure to fire, providing good oxygen and heat insulation, and effectively isolating the high-temperature flame from damaging the control cable of this solution.

[0041] Furthermore, such as Figure 1 It also includes an oxygen barrier layer 8 and an armor layer 9 that are sequentially wrapped between the third shielding layer 43 and the outer sheath 5.

[0042] Furthermore, such as Figure 1 The oxygen barrier layer 8 is made of ceramicized halogen-free low-smoke polyolefin oxygen barrier material, and the armor layer 9 is made of hot-dip galvanized steel strip.

[0043] Specifically, the ceramicized halogen-free low-smoke polyolefin oxygen barrier material facilitates the firing of the oxygen barrier layer 8 into a hard ceramic-like armor. After ablation, the cross-section generates uniform micropores, which can achieve very good heat insulation, temperature insulation, and fireproofing effects. The hot-dip galvanized steel strip facilitates the low cost of the armor layer 9, while also providing better corrosion resistance and a longer service life, and maintaining good performance in harsh environments.

[0044] Furthermore, such as Figure 1 Several conductor components 1 are uniformly arranged along the circumference of the first shielding layer 21.

[0045] Specifically, uniform arrangement facilitates good uniformity of force distribution among the conductor components 1.

[0046] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-shielding-effective torque-resistant control cable, characterized in that, include: Several conductor components (1); The shielding layer (2) includes a first shielding layer (21) and a drain wire (22). The first shielding layer (21) is wrapped around a plurality of the conductor components (1), and the drain wire (22) abuts against the outside of the first shielding layer (21). The screen wrapping layer (3) is wrapped around the first shielding layer (21), and the drain line (22) is located inside the screen wrapping layer (3); The total shielding layer (4) includes a second shielding layer (42) and a third shielding layer (43) that are sequentially wrapped around the screen wrapping layer (3); The outer sheath (5) is wrapped around the third shielding layer (43) and is made of thermoplastic vulcanized rubber.

2. The high shielding effectiveness anti-torque control cable according to claim 1, characterized in that, The conductor assembly (1) includes: Several conductor units (11); A twisted cladding (12) is wrapped around a plurality of the conductor units (11), and the first shielding layer (21) is wrapped around the twisted cladding (12).

3. The high shielding effectiveness anti-torque control cable according to claim 2, characterized in that, The conductor unit (11) includes: Conductor body (111); A fire-resistant layer (112), an inner insulation layer (113), and an outer insulation layer (114) are sequentially wrapped around the conductor body (111), and the twisted wrapping layer (12) is wrapped around the outer insulation layer (114).

4. A high-shielding-efficiency anti-torque control cable according to any one of claims 1-3, characterized in that, It also includes a filling layer (6) and a cabling wrapping layer (7) that are sequentially wrapped between the split-screen wrapping layer (3) and the second shielding layer (42).

5. A high-shielding-efficiency anti-torque control cable according to claim 4, characterized in that, The filling layer (6) is made of flame-retardant filling rope, and the cabling wrapping layer (7) is made of ceramicized halogen-free low-smoke high flame-retardant tape.

6. A high-shielding-efficiency anti-torque control cable according to any one of claims 1-3, characterized in that, It also includes an oxygen barrier layer (8) and an armor layer (9) that are sequentially wrapped between the third shielding layer (43) and the outer sheath (5).

7. A high-shielding-efficiency anti-torque control cable according to claim 6, characterized in that, The oxygen barrier layer (8) is made of ceramicized halogen-free low-smoke polyolefin oxygen barrier material, and the armor layer (9) is made of hot-dip galvanized steel strip.

8. A high-shielding-efficiency anti-torque control cable according to any one of claims 1-3, characterized in that, Several conductor components (1) are uniformly arranged along the circumference of the first shielding layer (21).

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