Efficient shielding type multi-core control cable

Abstract

The utility model discloses an efficient shielding type multi-core control cable, which comprises a cable core, at least five groups of wire cores are arranged in the cable core and are annularly distributed, a composite insulating layer is arranged outside the cable core, a composite shielding layer is wrapped outside the composite insulating layer, and the composite shielding layer is wrapped outside the cable core. The composite shielding layer is composed of a conductive shielding layer, an electrical connection layer and a reinforced supporting layer, the outer wall of the composite shielding layer is wrapped with a composite isolation layer, the composite isolation layer is composed of an electrical isolation layer, a mechanical supporting layer and an environment protection layer, and the outer wall of the composite isolation layer is provided with a composite outer sheath. The composite outer sheath is composed of a base layer, a wear-resistant layer and a flame-resistant protective layer. The problem that the shielding performance of the multi-core control cable is reduced along with long-time use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-core control cables, in particular to a high-efficiency shielded multi-core control cable. Background Art

[0002] Multi-core control cable refers to a cable with more than one insulated core, which is used to transmit signals or control signals. It is widely used in mechanical processing, automated production lines, chemical and pharmaceutical, power systems and communications. This cable has multiple cores inside, each of which is wrapped with insulating materials to ensure the stability and accuracy of signal transmission. The structural design and material selection of multi-core control cables have been carefully considered to ensure that they have good electrical and mechanical properties. The advantage of multi-core cables is that they can reduce the skin effect of the cable, thereby reducing line losses.

[0003] For example, the Chinese authorized patent "A multi-core control cable" with publication number CN108281223A includes a cable body, an inner sleeve, and an inorganic insulation layer. A filler is provided inside the cable body, and the filler is embedded in the cable body. The inner layer of the filler is provided with a steel wire protective layer, and the steel wire protective layer is closely attached to the filler. An aluminum conductor is provided inside the inner sleeve, and the aluminum conductor is embedded in the inner sleeve. For this type of multi-core control cable, asbestos is a material with high tensile strength, chemical and thermal corrosion resistance, and good electrical insulation.

[0004] The above-mentioned prior art may be affected by factors such as temperature, humidity, and chemical corrosion in the working environment, resulting in changes in the performance of the shielding layer, such as oxidation and corrosion, thereby reducing its shielding effect. In addition, excessive bending, stretching or extrusion during use may cause damage or deformation of the shielding layer, thereby reducing its shielding performance. Therefore, it does not meet existing needs. In this regard, we propose a high-efficiency shielded multi-core control cable. Utility Model Content

[0005] The utility model aims to provide a high-efficiency shielded multi-core control cable to solve the problem in the background technology that the shielding performance of the multi-core control cable decreases with long-term use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency shielded multi-core control cable, comprising a cable core, wherein a wire core is arranged inside the cable core, wherein the wire core is arranged in at least five groups, and the wire core is distributed in a ring shape, wherein a composite insulation layer is arranged outside the cable core, wherein a composite shielding layer is wrapped outside the composite insulation layer, wherein the composite shielding layer is composed of a conductive shielding layer, an electrical connection layer and a reinforced support layer, wherein the outer wall of the composite shielding layer is wrapped with a composite isolation layer, wherein the composite isolation layer is composed of an electrical isolation layer, a mechanical support layer and an environmental protection layer, wherein a composite outer sheath is arranged on the outer wall of the composite isolation layer, wherein the composite outer sheath is composed of a base layer, a wear-resistant layer and a flame-retardant protective layer.

[0007] Preferably, the base layer is located at the innermost side of the composite outer sheath, the wear-resistant layer is wrapped around the outside of the base layer, and the base layer and the wear-resistant layer are formed by extrusion, and the flame-retardant protective layer is wrapped around the outside of the wear-resistant layer, and the wear-resistant layer and the flame-retardant protective layer are formed by extrusion.

[0008] Preferably, the electrical isolation layer is located at the innermost side of the composite isolation layer, the mechanical support layer is wrapped around the outside of the electrical isolation layer, and the electrical isolation layer and the mechanical support layer are adhered and fixed, the environmental protection layer is located outside the mechanical support layer, and the environmental protection layer and the mechanical support layer are formed by extrusion.

[0009] Preferably, the conductive shielding layer is located at the innermost side of the composite shielding layer, the electrical connection layer is sprayed on the outer wall of the conductive shielding layer, and the reinforcing support layer is wound around the outside of the electrical connection layer.

[0010] Preferably, the composite insulation layer comprises an insulation base layer, and an insulation reinforcement layer is wound around the outside of the insulation base layer.

[0011] Preferably, the wire core comprises a conductor, and the conductor is formed by twisting a plurality of copper wires, the outside of the conductor is wrapped with an insulating sleeve, and a filling layer is provided in the gap between the cable core and the wire core.

[0012] Preferably, a wrapping tape is provided between the composite insulation layer and the cable core.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a composite isolation layer, which is composed of an electrical isolation layer, a mechanical support layer and an environmental protection layer. The electrical isolation layer can effectively prevent electrical contact between the shielding layer and the outer sheath, eliminate potential electrical interference, and improve the electrical performance of the cable. The mechanical support layer provides a stable structural support for the composite isolation layer, which can resist the bending, stretching and other mechanical stresses that the cable may encounter during use, thereby improving the durability of the cable. The environmental protection layer can effectively resist the erosion of the isolation layer by environmental factors such as ultraviolet rays and moisture, thereby ensuring the stable performance of the cable under various environmental conditions.

[0015] 2. The utility model is provided with a composite shielding layer, which is composed of a conductive shielding layer, an electrical connection layer and a reinforced support layer. It is made of highly conductive materials and can effectively absorb and reflect external electromagnetic interference, protect the signal transmission inside the cable from being affected, and improve the signal transmission quality and stability. The setting of the electrical connection layer ensures a good connection between the shielding layer and other parts of the cable, prevents leakage or interference of electrical signals, and further enhances the electrical performance of the cable. The addition of the reinforced support layer improves the mechanical strength and stability of the composite shielding layer, so that it can resist the influence of external mechanical stress and environmental factors, and extend the service life of the cable.

[0016] 3. The utility model is provided with a composite outer sheath consisting of a base layer, a wear-resistant layer and a flame-resistant protective layer. The multi-layer structure and high-strength material of the composite outer sheath can significantly improve the tensile, compressive and abrasion resistance of the cable and extend the service life of the cable. The addition of the flame-resistant protective layer enables the cable to self-extinguish or slow down the burning speed in extreme situations such as fire, thereby reducing the risk of fire. At the same time, it can effectively resist the erosion of the cable by environmental factors such as ultraviolet rays and humidity, ensuring the stable performance of the cable under various environmental conditions. The design of the composite outer sheath will not have a negative impact on the electrical performance inside the cable, but can improve the transmission quality of the signal by reducing external interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the composite outer sheath structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the composite isolation layer structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the composite shielding layer structure of the utility model.

[0022] In the figure: 1. composite outer sheath; 11. base layer; 12. wear-resistant layer; 13. flame-retardant protective layer; 2. composite isolation layer; 21. electrical isolation layer; 22. mechanical support layer; 23. environmental protection layer; 3. composite shielding layer; 31. conductive shielding layer; 32. electrical connection layer; 33. reinforced support layer; 4. composite insulation layer; 5. cable core; 6. wrapping tape; 7. wire core; 71. insulating sleeve; 72. conductor; 8. filling layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-5 The utility model provides an embodiment: a high-efficiency shielded multi-core control cable, including a cable core 5, a wire core 7 is arranged inside the cable core 5, at least five groups of wire cores 7 are arranged, and the wire cores 7 are distributed in a ring shape, a composite insulation layer 4 is arranged outside the cable core 5, and a composite shielding layer 3 is wrapped outside the composite insulation layer 4, and the composite shielding layer 3 is composed of a conductive shielding layer 31, an electrical connection layer 32 and a reinforced support layer 33. The outer wall of the composite shielding layer 3 is wrapped with a composite isolation layer 2, and the composite isolation layer 2 is composed of an electrical isolation layer 21, a mechanical support layer 22 and an environmental protection layer 23. The outer wall of the composite isolation layer 2 is provided with a composite outer sheath 1, and the composite outer sheath 1 is composed of a base layer 11, a wear-resistant layer 12 and a flame-retardant protective layer 13.

[0025] The composite isolation layer 2 can effectively prevent electrical contact between the shielding layer and the outer sheath, eliminate potential electrical interference, and improve the electrical performance of the cable. The composite shielding layer 3 is made of highly conductive material, which can effectively absorb and reflect external electromagnetic interference, protect the signal transmission inside the cable from being affected, and improve the signal transmission quality and stability. The multi-layer structure and high-strength material of the composite outer sheath 1 can significantly improve the cable's tensile, compressive and wear resistance, and extend the cable's service life.

[0026] See also Figure 3The base layer 11 is located at the innermost side of the composite outer sheath 1, the wear-resistant layer 12 is wrapped around the outside of the base layer 11, and the base layer 11 and the wear-resistant layer 12 are formed by extrusion, the flame-retardant protective layer 13 is wrapped around the outside of the wear-resistant layer 12, and the wear-resistant layer 12 and the flame-retardant protective layer 13 are formed by extrusion, the base layer 11 is made of polyvinyl chloride, has good insulation, mechanical strength and chemical corrosion resistance, and is a commonly used basic material for cable outer sheaths, the wear-resistant layer 12 is made of polyethylene, has excellent mechanical and electrical properties, and is resistant to wear and environmental aging, and the flame-retardant protective layer 13 is made of flame-retardant rubber, which ensures that the cable has a certain self-extinguishing ability in extreme situations such as fire, thereby improving safety, and at the same time has good elasticity and weather resistance, and is suitable for outdoor environments or occasions requiring a certain degree of flexibility.

[0027] See also Figure 4 The electrical isolation layer 21 is located at the innermost side of the composite isolation layer 2, the mechanical support layer 22 is wrapped around the outside of the electrical isolation layer 21, and the electrical isolation layer 21 is adhered and fixed to the mechanical support layer 22, the environmental protection layer 23 is located outside the mechanical support layer 22, and the environmental protection layer 23 and the mechanical support layer 22 are formed by extrusion, the electrical isolation layer 21 is made of polyimide film, has excellent electrical properties and chemical stability, and can effectively isolate electrical contact, the mechanical support layer 22 is made of nylon, has good mechanical properties and wear resistance, and can provide stable support for the isolation layer, and the environmental protection layer 23 is made of polyurethane, which can resist the erosion of the isolation layer by environmental factors such as ultraviolet rays and moisture.

[0028] See also Figure 5 The conductive shielding layer 31 is located at the innermost side of the composite shielding layer 3, the electrical connection layer 32 is sprayed on the outer wall of the conductive shielding layer 31, and the reinforcing support layer 33 is wrapped around the outside of the electrical connection layer 32. The conductive shielding layer 31 is made of copper foil, which can effectively absorb and reflect external electromagnetic interference and protect the signal transmission inside the cable from being affected. The electrical connection layer 32 is a conductive coating to ensure that the conductive shielding layer forms a good electrical connection with other parts of the cable. This helps to maintain the continuity and integrity of the shielding layer and prevent leakage or interference of electrical signals. The reinforcing support layer 33 is glass fiber, which can enhance the tensile and bending resistance of the shielding layer. High-strength polymers have good wear resistance and corrosion resistance and are suitable for applications under harsh environmental conditions.

[0029] Furthermore, the composite insulation layer 4 includes an insulation base layer, and an insulation reinforcement layer is wrapped around the outside of the insulation base layer. The insulation base layer is made of thermoplastic elastomer, which effectively isolates the electrical contact between the core wire and the shielding layer, eliminates potential electrical interference, and improves the electrical performance of the cable. The insulation reinforcement layer is polyester fiber, which improves the mechanical strength and wear resistance of the insulation layer, so that the cable can still maintain stable performance under mechanical stress such as bending and stretching.

[0030] See also Figure 1 and Figure 2 The wire core 7 includes a conductor 72 , and the conductor 72 is formed by twisting a plurality of copper wires. The outside of the conductor 72 is wrapped with an insulating sleeve 71 , and a filling layer 8 is provided in the gap between the cable core 5 and the wire core 7 .

[0031] See also Figure 1 and Figure 2 A wrapping tape 6 is arranged between the composite insulating layer 4 and the cable core 5.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-efficiency shielded multi-core control cable, comprising a cable core (5), characterized in that: The cable core (5) is provided with a wire core (7) inside, the wire core (7) is provided with at least five groups, and the wire cores (7) are distributed in a ring shape; the cable core (5) is provided with a composite insulation layer (4) outside, the composite insulation layer (4) is wrapped with a composite shielding layer (3) outside, the composite shielding layer (3) is composed of a conductive shielding layer (31), an electrical connection layer (32) and a reinforcement support layer (33); the outer wall of the composite shielding layer (3) is wrapped with a composite isolation layer (2), the composite isolation layer (2) is composed of an electrical isolation layer (21), a mechanical support layer (22) and an environmental protection layer (23); the outer wall of the composite isolation layer (2) is provided with a composite outer sheath (1), the composite outer sheath (1) is composed of a base layer (11), a wear-resistant layer (12) and a flame-retardant protection layer (13).

2. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: The base layer (11) is located at the innermost side of the composite outer jacket (1), the wear-resistant layer (12) is wrapped around the outside of the base layer (11), and the base layer (11) and the wear-resistant layer (12) are formed by extrusion, and the flame-retardant protective layer (13) is wrapped around the outside of the wear-resistant layer (12), and the wear-resistant layer (12) and the flame-retardant protective layer (13) are formed by extrusion.

3. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: The electrical isolation layer (21) is located at the innermost side of the composite isolation layer (2), the mechanical support layer (22) is wrapped around the outside of the electrical isolation layer (21), and the electrical isolation layer (21) and the mechanical support layer (22) are adhered and fixed, the environmental protection layer (23) is located outside the mechanical support layer (22), and the environmental protection layer (23) and the mechanical support layer (22) are formed by extrusion.

4. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: The conductive shielding layer (31) is located at the innermost side of the composite shielding layer (3), the electrical connection layer (32) is sprayed on the outer wall of the conductive shielding layer (31), and the reinforcing support layer (33) is wound around the outside of the electrical connection layer (32).

5. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: The composite insulating layer (4) comprises an insulating base layer, and an insulating reinforcement layer is wound around the outside of the insulating base layer.

6. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: The wire core (7) comprises a conductor (72), and the conductor (72) is formed by twisting a plurality of copper wires. The conductor (72) is wrapped with an insulating sleeve (71) on the outside, and a filling layer (8) is provided in the gap between the cable core (5) and the wire core (7).

7. The high-efficiency shielded multi-core control cable according to claim 1, characterized in that: A wrapping tape (6) is provided between the composite insulation layer (4) and the cable core (5).

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