Anti-interference cable

Abstract

The utility model discloses an anti-interference cable which comprises at least one wire core, an inner sleeve, an outer sleeve, a filling layer, an inner shielding layer, an outer shielding layer and an adjustable shielding layer, the wire core is wrapped by the inner sleeve, the inner sleeve is wrapped by the outer sleeve, and the filling layer is arranged between the inner sleeve and the outer sleeve. The inner shielding layer, the outer shielding layer and the adjustable shielding layer are sequentially arranged outside the outer sleeve from inside to outside, the adjustable shielding layer is composed of a spiral pipe, and the spiral pipe is filled with a conductive solution. According to the anti-interference cable, the anti-interference performance can be controlled, and the length can be cut at will.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an anti-interference cable. Background Art

[0002] Today, China's total cable output value has far exceeded that of the United States, making it the world's largest cable producer. With the rapid development of China's cable industry, anti-interference shielded cables are also ushering in their peak period. Anti-interference shielded cables are mainly used to prevent interference signals from entering the inner conductor to form interference, and are suitable for transformers and similar equipment. At present, ordinary anti-interference settings are usually implemented with a fixed shielding layer. Once the cable is formed, its ability to resist external interference is fixed. This type of communication cable can still cope with conventional application scenarios. For important communication lines exposed to the outside, they may be affected by external interference sources of different frequencies. At this time, the anti-interference effect of the fixed shielding layer is limited.

[0003] To this end, in the prior art, the invention patent with authorization announcement number CN 116313279 B discloses an anti-interference communication cable and an anti-interference control method, including a communication cable core component, a fixed shielding layer, an adjustable shielding layer, an insulating layer and an adjustable shielding control device; the fixed shielding layer is wrapped around the outer surface of the communication cable core component, the adjustable shielding layer includes a shell layer and a liquid shielding layer, and the control component is connected to the control of each electrical component of the liquid exchange pump component. The present invention wraps the adjustable shielding layer, the adjustable shielding layer adopts a liquid shielding layer, and the liquid shielding layer with different conductivity can be replaced with the support of the adjustable shielding control device, changing the anti-interference performance of the liquid shielding layer, so that the communication cable can adapt to the anti-interference requirements of interference sources that suddenly appear in different environments, and the resistance to different interference sources will be greatly increased, thereby realizing the flexible controllability of the anti-interference performance of the communication cable, and having better applicability for communication cables in important application scenarios.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art: 1. The length of the above-mentioned communication cable is fixed, and liquid exchange ports are set at both ends of the liquid shielding layer. The liquid exchange ports are connected to the servo pump through quick connectors. The length of the liquid shielding layer is also fixed. It can be seen that the communication cable can only be customized with a fixed length and cannot be arbitrarily cut like conventional cables. In actual applications, due to the complex and changeable application environment, the length of the communication cable is difficult to predict in advance; 2. Filling with liquid shielding material can achieve controllable anti-interference performance, but the weight increases too much, which is inconvenient to transport and install. Summary of the invention

[0005] The utility model aims at the deficiencies of the prior art and develops an anti-interference cable. The anti-interference cable can realize controllable anti-interference performance and the length can be cut arbitrarily.

[0006] The technical solution to the technical problem solved by the utility model is as follows: an embodiment of the utility model provides an anti-interference cable, comprising a wire core, an inner sleeve, an outer sleeve, and a filling layer, wherein at least one wire core is provided, the inner sleeve wraps the wire core, the outer sleeve wraps the inner sleeve, and the filling layer is arranged between the inner sleeve and the outer sleeve, the anti-interference cable also comprises an inner shielding layer, an outer shielding layer, and an adjustable shielding layer, which are arranged on the outside of the outer sleeve in sequence from the inside to the outside, and the adjustable shielding layer is composed of a spiral tube, and the interior of the spiral tube is filled with a conductive solution.

[0007] As an optimization, foam particles are also arranged in the spiral tube of the adjustable shielding layer.

[0008] As an optimization, outer walls of two adjacent turns of the spiral tube in the adjustable shielding layer fit together.

[0009] As an optimization, the inner diameter of the spiral tube in the adjustable shielding layer is greater than mm. If the inner diameter of the spiral tube is too large, it will increase the weight and increase the manufacturing cost. If the inner diameter is too small, it is easy to get blocked and the anti-interference effect is poor. The optimal inner diameter of the spiral tube is 2 mm.

[0010] As an optimization, the conductive solution is any one of a sodium chloride solution, an aluminum nitrate solution, and a sodium carbonate solution.

[0011] As an optimization, the outer shielding layer is composed of a PVP outer layer, a silver-plated copper wire layer, a ferrite magnetic tube and a rubber inner layer from the outside to the inside.

[0012] As an optimization, the inner shielding layer is made of polyester fiber cloth, and the surface of the polyester fiber cloth is carbon-plated.

[0013] As an optimization, the cross-sections of the inner shielding layer and the outer shielding layer are both open rings, the inner shielding layer and the outer shielding layer are connected at the openings on both sides, a portion of the spiral tube of the adjustable shielding layer is cut off axially, and adjacent incisions are connected to form a complete pipeline.

[0014] As an optimization, a guide edge with a gradually increasing opening is provided outside the opening of the outer shielding layer.

[0015] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] 1. By setting the adjustable shielding layer to be composed of a spiral tube, the anti-interference cable can be cut into any length, and the incision of the spiral mouth can be sealed after cutting; the interior of the spiral tube is filled with a conductive solution, which can shield the interfering electrical signal, and the conductive solution can be easily extracted and replaced. Replacing the conductive solution with different conductivity can adjust the anti-interference performance of the adjustable shielding layer, and the anti-interference cable can achieve controllable anti-interference performance.

[0017] 2. Fill the spiral tube with foam particles and conductive solution evenly, which will not affect the conductive anti-interference ability of the conductive solution and can reduce the weight of the adjustable shielding layer. The diameter of the foam particles is less than 1 / 4 of the inner diameter of the spiral tube to avoid clogging. When replacing the conductive solution, just extract the foam particles together.

[0018] 3. The spiral tube is made of insulating material, and the outer walls of two adjacent turns of the spiral tube are fitted together, so that the conductive solution can cover the outside of the cable as much as possible to ensure the anti-interference effect.

[0019] 4. The silver-plated copper wire layer can interfere with high-frequency electromagnetic waves, and the ferrite magnetic tube can interfere with low-frequency electromagnetic waves. Carbon plating on the surface of the polyester fiber cloth in the inner shielding layer has a good electromagnetic wave shielding effect, thereby effectively resisting electromagnetic interference.

[0020] 5. By setting the cross-sections of the inner shielding layer and the outer shielding layer to be open rings, and providing a guide edge with a gradually increasing opening on the outside of the opening of the outer shielding layer, the independent installation and removal of the inner shielding layer, the outer shielding layer, and the adjustable shielding layer can be facilitated. It can be used on the communication cable that has been installed to improve the anti-interference ability of the communication cable. The anti-interference ability can be improved without replacing the cable, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the front view of the first embodiment of the utility model.

[0022] Figure 2 It is a right side view of the first embodiment of the utility model.

[0023] Figure 3 It is a three-dimensional diagram of the first embodiment of the utility model.

[0024] Figure 4 This is a three-dimensional diagram of the first embodiment of the utility model after the inner shielding layer and the outer shielding layer are hidden.

[0025] Figure 5 This is a front view of the second embodiment of the utility model.

[0026] Figure 6 It is a right side view of the second embodiment of the utility model.

[0027] Figure 7 It is a stereogram of the second embodiment of the utility model.

[0028] Figure 8 This is a three-dimensional diagram of the second embodiment of the utility model after the inner shielding layer and the outer shielding layer are hidden.

[0029] Among them: 1. Wire core, 2. Inner sleeve, 3. Outer sleeve, 4. Filling layer, 5. Inner shielding layer, 6. Outer shielding layer, 7. Adjustable shielding layer, 61. Guide edge. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0031] Embodiment 1: Figures 1 to 4 The first embodiment of the present utility model is as follows: Figure 2 As shown, an anti-interference cable includes a core 1, an inner sleeve 2, an outer sleeve 3, and a filling layer 4. Four cores 1 are provided, the inner sleeve 2 wraps the core 1, the outer sleeve 3 wraps the inner sleeve 2, and the filling layer 4 is arranged between the inner sleeve 2 and the outer sleeve 3. The anti-interference cable also includes an inner shielding layer 5, an outer shielding layer 6, and an adjustable shielding layer 7. The inner shielding layer 5, the outer shielding layer 6, and the adjustable shielding layer 7 are arranged on the outside of the outer sleeve 3 from the inside to the outside. The adjustable shielding layer 7 is composed of a spiral tube, and the interior of the spiral tube is filled with a conductive solution. Foam particles are also provided in the spiral tube of the adjustable shielding layer 7. The outer walls of two adjacent turns of the spiral tube in the adjustable shielding layer 7 are bonded. The inner diameter of the spiral tube in the adjustable shielding layer 7 is greater than 2 mm. The conductive solution is any one of a sodium chloride solution, an aluminum nitrate solution, and a sodium carbonate solution.

[0032] The outer shielding layer 6 is composed of a PVP outer layer, a silver-plated copper wire layer, a ferrite magnetic tube and a rubber inner layer from the outside to the inside. The silver-plated copper wire layer can interfere with high-frequency electromagnetics, and the ferrite magnetic tube can interfere with low-frequency electromagnetics. The inner shielding layer 5 is made of polyester fiber cloth, and the surface of the polyester fiber cloth is carbon-plated. By carbon-plating the surface of the polyester fiber cloth on the inner shielding layer 5, it has a good electromagnetic wave shielding effect, thereby effectively resisting electromagnetic interference.

[0033] Working principle: By setting the adjustable shielding layer 7 to be composed of a spiral tube, the anti-interference cable can be cut into any length, and after cutting, the incision of the spiral mouth can be sealed; the interior of the spiral tube is filled with a conductive solution, which can shield the interfering electrical signals, and the conductive solution can be easily extracted and replaced. Replacing the conductive solution with different conductivity can adjust the anti-interference performance of the adjustable shielding layer 7, and the anti-interference cable can achieve controllable anti-interference performance.

[0034] The foam particles and the conductive solution are uniformly filled into the spiral tube, which does not affect the conductive anti-interference ability of the conductive solution and can reduce the weight of the adjustable shielding layer 7. The diameter of the foam particles is less than 1 / 4 of the inner diameter of the spiral tube to avoid clogging. When replacing the conductive solution, the foam particles can be extracted together.

[0035] The spiral tube is made of insulating material, and the outer walls of two adjacent turns of the spiral tube are fitted together, so that the conductive solution can cover the outside of the cable as much as possible to ensure the anti-interference effect.

[0036] If the inner diameter of the spiral tube is too large, it will increase the weight and high the manufacturing cost. If the inner diameter is too small, it is easy to get clogged and the anti-interference effect is poor. The optimal inner diameter of the spiral tube is 2mm.

[0037] Embodiment 2: Figures 5 to 8 This is the second embodiment of the utility model, which differs from the first embodiment in that: Figure 6 As shown, the cross-sections of the inner shielding layer 5 and the outer shielding layer 6 are both open rings, the inner shielding layer 5 and the outer shielding layer 6 are connected at the openings on both sides, a portion of the spiral tube of the adjustable shielding layer 7 is cut off along the axial direction, and adjacent cuts are connected to form a complete pipeline. A guide edge 61 with a gradually increasing opening is provided on the outer side of the opening of the outer shielding layer 6.

[0038] By setting the cross-sections of the inner shielding layer 5 and the outer shielding layer 6 to be open rings, and setting a guide edge 61 with a gradually increasing opening outside the opening of the outer shielding layer 6, the inner shielding layer 5, the outer shielding layer 6, and the adjustable shielding layer 7 form an independent component, which can be easily installed and removed independently, and can be used on the communication cable that has been installed to improve the anti-interference ability of the communication cable. The anti-interference ability can be improved without replacing the cable, saving costs. When the anti-interference performance of the cable needs to be changed, the inner shielding layer 5, the outer shielding layer 6, and the adjustable shielding layer 7 components containing conductive solutions of different concentrations can be replaced, which is more convenient and quicker than replacing the conductive solution.

[0039] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. An anti-interference cable, comprising a wire core (1), an inner sleeve (2), an outer sleeve (3), and a filling layer (4), wherein at least one wire core (1) is provided, the inner sleeve (2) wraps the wire core (1), the outer sleeve (3) wraps the inner sleeve (2), and the filling layer (4) is provided between the inner sleeve (2) and the outer sleeve (3), wherein: The anti-interference cable further comprises an inner shielding layer (5), an outer shielding layer (6), and an adjustable shielding layer (7), wherein the inner shielding layer (5), the outer shielding layer (6), and the adjustable shielding layer (7) are sequentially arranged outside the outer jacket (3) from the inside to the outside, and the adjustable shielding layer (7) is composed of a spiral tube, and the interior of the spiral tube is filled with a conductive solution.

2. The anti-interference cable according to claim 1, characterized in that: Foam particles are also arranged in the spiral tube of the adjustable shielding layer (7).

3. The anti-interference cable according to claim 1, characterized in that: The outer walls of two adjacent turns of the spiral tube in the adjustable shielding layer (7) are in contact with each other.

4. The anti-interference cable according to claim 1, characterized in that: The inner diameter of the spiral tube in the adjustable shielding layer (7) is greater than 2 mm.

5. The anti-interference cable according to claim 1, characterized in that: The conductive solution is any one of a sodium chloride solution, an aluminum nitrate solution, and a sodium carbonate solution.

6. The anti-interference cable according to claim 1, characterized in that: The outer shielding layer (6) comprises, from outside to inside, a PVP outer layer, a silver-plated copper wire layer, a ferrite magnetic tube and a rubber inner layer.

7. The anti-interference cable according to claim 1, characterized in that: The inner shielding layer (5) is made of polyester fiber cloth, and the surface of the polyester fiber cloth is carbon-plated.

8. The anti-interference cable according to claim 1, characterized in that: The cross-sections of the inner shielding layer (5) and the outer shielding layer (6) are both open rings. The inner shielding layer (5) and the outer shielding layer (6) are connected at openings on both sides. A portion of the spiral tube of the adjustable shielding layer (7) is cut off along the axial direction, and adjacent cuts are connected to form a complete pipeline.

9. The anti-interference cable according to claim 8, characterized in that: A guide edge (61) with a gradually increasing opening is provided outside the opening of the outer shielding layer (6).

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