Shielded cable with heating ice-melting structure

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a shielding cable with a heating ice melting structure. The center of the cable is a guide core, and the outermost layer of the cable is an outer sheath. An inner insulating layer, a heating layer, a double-helix electrode part and a coupling shielding layer are sequentially distributed between the guide core and the outer sheath; the heating layer has a heating working state and a heating stopping working state, and the double-helix electrode parts symmetrically wrap the surface of the heating layer and are electrically connected with the two ends of the heating layer. According to the utility model, the built-in heating mechanism can be automatically started and stopped according to temperature during the use of the cable, so that heat is automatically released to melt an ice layer at low temperature, and the temperature performance of signal transmission is ensured while the weight of the cable is prevented from being increased.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular relates to a shielded cable with a heating and de-icing structure. Background Technology

[0002] Shielded cables are specially designed cables with an outer layer of conductive or magnetic material covering the internal conductors. Their main purpose is to block or reduce external electromagnetic interference (EMI) from entering the cable and to prevent internal signals from radiating outwards and interfering with other equipment.

[0003] Currently, cables exposed to cold and humid environments are subject to physical damage or signal interruption due to the accumulation of ice and snow. Furthermore, changes in the cable bending radius and deformation of the internal shielding layer affect signal integrity.

[0004] To address the aforementioned issues, this application proposes a shielded cable with a heating and de-icing structure. Utility Model Content

[0005] The purpose of this invention is to provide a shielded cable with a heating and de-icing structure, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a shielded cable with a heating and de-icing structure;

[0008] The cable has a conductor at its center and an outermost sheath at its outermost layer.

[0009] An inner insulating layer, a heating layer, a double-helix electrode section, and a coupling shielding layer are sequentially distributed between the conductor core and the outer sheath.

[0010] The heating layer has two working states: heating and not heating. The double helix electrode is symmetrically wrapped around the surface of the heating layer and electrically connected to both ends of the heating layer.

[0011] Preferably, the inner layer of the coupling shielding layer is a braided mesh, the outer layer of the coupling shielding layer is an electromagnetic shielding layer, and the braided mesh is electrically connected to the double helix electrode section.

[0012] Preferably, the heating layer is spirally wound around the outside of the inner insulation layer.

[0013] Preferably, the heating layer is spirally wound around the outside of the inner insulation layer.

[0014] Preferably, the heating layer is a carbon fiber reinforced BaTiO3-based ceramic strip with a thickness of 0.2 to 0.5 mm.

[0015] Preferably, the pitch angle of the double-helix electrode section is 30° to 45°, and the width of the electrode section is half the width of the heating element.

[0016] Preferably, the heating layer increases its resistance when the temperature is below 2°C, converting electrical energy into heat energy, and stops heating when the temperature exceeds 2°C.

[0017] This utility model has the following beneficial effects:

[0018] This invention integrates heating, conductivity, and shielding functions through a three-layer coaxial integrated structure. It also utilizes the coupling between the double-helix electrode section and the metal braided layer to achieve a low-temperature self-starting and stopping function, thereby solving the problems of cable damage and signal interruption in cold and humid environments.

[0019] This invention uses a double-helix electrode section that is symmetrically wrapped with a pitch angle of 30 to 45 degrees, so that the current forms a parallel circuit of equal length along the cable axis, eliminating the end attenuation effect of traditional straight electrodes. The synergistic coupling shielding layer solves the contradiction between heat generation uniformity and electromagnetic compatibility.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the cable cross-section structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the layered structure of one end of the cable of this utility model;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] In the picture:

[0027] 1. Cable;

[0028] 11. Conductor core; 12. Outer sheath; 13. Inner insulation layer; 14. Heating layer; 15. Double helix electrode section; 16. Coupling shielding layer;

[0029] 161. Woven mesh; 162. Electromagnetic shielding layer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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 of this utility model.

[0032] Please see Figure 1-3 As shown, this utility model is a shielded cable with a heating and de-icing structure, cable 1;

[0033] The center of cable 1 is the conductor core 11, and the outermost layer of cable 1 is the outer sheath 12;

[0034] Between the conductor core 11 and the outer sheath 12, there are sequentially distributed an inner insulation layer 13 made of cross-linked polyethylene, a heating layer 14, a double helix electrode part 15, and a coupling shielding layer 16.

[0035] The heating layer 14 is a PTC ceramic composite strip, which is installed by spiral winding and has two working states: heating and stopping heating. The double spiral electrode part 15 is a silver-plated copper strip, which is symmetrically wrapped around the surface of the heating layer 14 and electrically connected to both ends of the heating layer 14.

[0036] Furthermore, the inner layer of the coupling shielding layer 16 is a braided mesh 161 made of copper wire, and the inner side is connected to the double helix electrode part 15, which also serves as the heating circuit electrode. The outer layer of the coupling shielding layer 16 is an aluminum-plastic composite electromagnetic shielding layer 162, and the braided mesh 161 is electrically connected to the double helix electrode part 15.

[0037] Furthermore, the heating layer 14 is a carbon fiber reinforced BaTiO3-based ceramic tape with a thickness of 0.2 to 0.5 mm, which is spirally wound around the outside of the inner insulation layer 13.

[0038] Furthermore, the outer sheath 12 is made of cold-resistant and tear-resistant polyurethane material, with coaxial grooves evenly distributed around the surface. The grooves are 0.01 to 0.3 mm deep and 1 to 2 mm wide, which are used to reduce the bending radius and thus improve low-temperature flexibility, while also serving as ice stress relief grooves.

[0039] Furthermore, the pitch angle of the double-helix electrode section 15 is 30° to 45°, and the width of the electrode band inside is half the width of the heating element, which is used to promote uniform heating and reduce the temperature difference between different areas.

[0040] Furthermore, the resistance of the heating layer 14 increases when the temperature is below 2°C, thereby converting electrical energy into heat energy when energized. Conversely, it stops heating when the temperature exceeds 2°C, thus creating an automatic start-stop effect.

[0041] It is understood that this utility model can automatically start and stop the built-in heating mechanism according to the temperature during the use of cable 1, so as to automatically release heat to melt the ice layer at low temperature, thereby avoiding increasing the weight of cable 1 while ensuring the temperature performance of signal transmission.

[0042] A specific application of the operation process in this embodiment is as follows: During the low-temperature triggering stage, after the ice layer forms, the surface temperature of the cable 1 drops to less than 2 degrees, causing the resistance of the heating layer 14 to automatically decrease to the working threshold. At this time, the double helix electrode part 15 is in full contact with the PTC layer to capture the resistance change in real time. At this time, the electrical energy is converted into heat due to the influence of the resistance of the heating layer 14, thereby releasing heat in the outer ring area of ​​the cable 1 to achieve the effect of melting the external ice layer. When the overall temperature of the cable 1 rises, the resistance increases, and the heating layer 14 returns to the initial state, thereby achieving the effect of automatically stopping heating.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shielded cable with a heating and de-icing structure, characterized in that: Cable (1); The center of the cable (1) is the conductor core (11), and the outermost layer of the cable (1) is the outer sheath (12). An inner insulating layer (13), a heating layer (14), a double-helix electrode section (15), and a coupling shielding layer (16) are sequentially distributed between the conductor core (11) and the outer sheath (12). The heating layer (14) has two working states: heating and stopping heating. The double helix electrode (15) is symmetrically wrapped around the surface of the heating layer (14) and electrically connected to both ends of the heating layer (14).

2. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The inner layer of the coupling shielding layer (16) is a braided mesh (161), and the outer layer of the coupling shielding layer (16) is an electromagnetic shielding layer (162). The braided mesh (161) is electrically connected to the double helix electrode part (15).

3. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The heating layer (14) is spirally wound around the outside of the inner insulation layer (13).

4. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The outer sheath (12) has coaxial grooves on its surface, which are evenly distributed circumferentially.

5. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The heating layer (14) is a carbon fiber reinforced BaTiO3-based ceramic strip with a thickness of 0.2 to 0.5 mm.

6. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The pitch angle of the double-helix electrode section (15) is 30° to 45°, and the width of the electrode within it is half the width of the heating element.

7. The shielded cable with a heating and de-icing structure according to claim 1, characterized in that: The heating layer (14) increases its resistance when the temperature is below 2°C, converting electrical energy into heat energy, and stops heating when the temperature exceeds 2°C.

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