Compression-resistant and corrosion-resistant rubber insulated wire

Abstract

The utility model discloses a compression-resistant and corrosion-resistant rubber insulated wire, belongs to the technical field of power transmission line structures, and provides a compression-resistant and corrosion-resistant rubber insulated wire capable of effectively avoiding extrusion deformation of a metal wire core, which comprises a conductive core, an inner rubber sleeve wrapped outside the conductive core, an elastic layer wrapped outside the inner rubber sleeve, and an outer rubber sleeve wrapped outside the elastic layer, a deformation cavity is formed in the outer rubber sleeve and is suitable for generating deformation when being pressed to provide a buffer effect for the conductive core, the two elastic layers are jointly wrapped by a shielding layer, filling strips are arranged in the shielding layer, the number of the filling strips is two, and the two filling strips are located between the two elastic layers. According to the utility model, the outer rubber sleeve with the sealed deformation cavity is designed to directly bear external pressure and is matched with the elastic layer to provide pressure absorption, buffering and dispersion functions, so that the anti-pressure capability of the wire is improved, the metal wire core is effectively prevented from being deformed and narrowed due to local pressure, the probability of resistance improvement is reduced, and the efficiency and stability of electric energy transmission are ensured.

Description

Technical Field

[0001] This application relates to the technical field of transmission line structures, and particularly to a compression-resistant and corrosion-resistant rubber-insulated wire. Background Art

[0002] Most existing transmission lines are wrapped with several layers of rubber, having good wear resistance and corrosion resistance. However, the rubber layers are in close contact. When the wire is subjected to local pressure, the rubber layers will squeeze each other, and the squeezing force will act on the metal wire core, causing the cross-section of the metal wire core to narrow, resulting in an increase in resistance and a decrease in power transmission efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a compression-resistant and corrosion-resistant rubber-insulated wire that can effectively avoid the extrusion deformation of the metal wire core.

[0004] To achieve the above purpose, this application provides a compression-resistant and corrosion-resistant rubber-insulated wire: including a conductive core, an inner rubber sleeve is wrapped outside the conductive core, an elastic layer is wrapped outside the inner rubber sleeve, an outer rubber sleeve is wrapped outside the elastic layer, and a deformation cavity is provided inside the outer rubber sleeve, which is adapted to generate deformation under pressure to provide a buffering effect for the conductive core and avoid the direct force on the metal wire core.

[0005] As a preference, the elastic layer is divided into two, and a shielding layer is wrapped outside the two elastic layers together to avoid obvious electric field influence on the outside when the metal wire core transmits electricity.

[0006] As a preference, a filling strip is provided inside the shielding layer, and there are also two filling strips. The two filling strips are located between the two elastic layers to improve the stability of the elastic layer inside the shielding layer.

[0007] As a preference, a tensile core is wrapped inside the filling strip, and the tensile core forms a wire threading channel inside the filling strip. The tensile core is used to improve the tensile strength of the whole wire. Under the action of a strong tensile force, the length of the wire basically does not change, effectively avoiding the increase in resistance and the decrease in power transmission efficiency due to the stretching of the metal wire core.

[0008] As a preference, each elastic layer wraps a conductive core through an inner rubber sleeve, and the two conductive cores are isolated from each other and are distributed as positive and reverse current circuits.

[0009] As a preference, the conductive core includes several aluminum wire cores, and each aluminum wire core is wrapped with an insulating paint layer, and each aluminum wire core is also isolated from each other, improving the insulation performance of the whole wire.

[0010] As an optimization, a wire cavity is formed inside the outer rubber sleeve. The shielding layer is made of aluminum foil and is attached to the inner wall of the wire cavity, and is actually pressed in the wire cavity by the pre-compressed elastic layer.

[0011] As an optimization, the cross section of the deformation cavity is arc-shaped. There are two deformation cavities, and the two deformation cavities are symmetric about the wire cavity. When the wire is under pressure, the deformation cavities will be flipped to the pressure surface passively, which is a phenomenon forced by the external pressure.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] (1) By designing the outer rubber sleeve with a sealed deformation cavity to directly bear the external pressure, and cooperating with the elastic layer to provide functions of pressure absorption, buffering and dispersion, the pressure resistance of the wire is improved, effectively avoiding the local compression and deformation narrowing of the metal wire core, reducing the probability of increased resistance, and ensuring the efficiency and stability of power transmission;

[0014] (2) This design has a compact structure, a reasonable layer arrangement, good wear resistance and corrosion resistance, and strong tensile capacity. It will not cause the cross section of the metal wire core to narrow due to wire stretching, thus affecting the power transmission performance. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the layered structure of the compression-resistant and corrosion-resistant rubber-insulated wire.

[0016] Figure 2 It is a front view of the end face of the compression-resistant and corrosion-resistant rubber-insulated wire.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the outer rubber sleeve of the compression-resistant and corrosion-resistant rubber-insulated wire.

[0018] Figure 4 It is a sectional view of the three-dimensional structure of the outer rubber sleeve of the compression-resistant and corrosion-resistant rubber-insulated wire.

[0019] Figure 5 It is an arrangement diagram of the filling strips of the compression-resistant and corrosion-resistant rubber-insulated wire inside the shielding layer.

[0020] Figure 6 It is a sectional view of the three-dimensional structure of the filling strip of the compression-resistant and corrosion-resistant rubber-insulated wire.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the cooperation between the conductivity of the compression-resistant and corrosion-resistant rubber-insulated wire and the elastic layer.

[0022] Figure 8 It is for the compression-resistant and corrosion-resistant rubber-insulated wire Figure 7 local enlarged view at position A.

[0023] In the figure: 1. Outer rubber sleeve; 101. Stranding cavity; 102. Deformation cavity; 2. Shielding layer; 3. Filling strip; 301. Thread-passing channel; 4. Tensile core; 5. Elastic layer; 6. Inner rubber sleeve; 7. Conductive core; 701. Aluminum wire core; 702. Insulating paint layer. Detailed implementation manners

[0024] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0025] In the description of the present application, it should be noted that for orientation terms, such as terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0027] The terms "comprising" and "having" and any variations thereof in the description and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0028] Such as Figures 1-8The shown compression-resistant and corrosion-resistant rubber-insulated wire includes a conductive core 7 located in the innermost layer. The conductive core 7 is wrapped with an inner rubber sleeve 6 which is made of rubber material. The inner rubber sleeve 6 is wrapped with an elastic layer 5 which is made of an elastic synthetic material, such as high-density EVA sponge. The elastic layer 5 is divided into two parts. The cross-section of each of the two elastic layers 5 is an annular shape when not under external pressure. The two elastic layers 5 are closely adjacent to each other, and a shielding layer 2 is wrapped around the two elastic layers 5 together. Therefore, the cross-section of the shielding layer 2 is a rounded rectangle with semi-circular ends at both ends. The shielding layer 2 is made of aluminum foil and has a good electromagnetic shielding effect, which can effectively reduce the influence of the electric field generated by the energized conductive core 7 on other external signal lines. Inside the outer rubber sleeve 1, there is a wire-bundling cavity 101, and the shielding layer 2 is closely attached to the inner wall of the wire-bundling cavity 101. All the elastic layers 5, inner rubber sleeve 6, and conductive core 7 are located inside the wire-bundling cavity 101.

[0029] Two separate filling strips 3 are arranged inside the shielding layer 2. The two filling strips 3 are located between the two elastic layers 5 and exactly fill the gap formed between the outer side surface of the elastic layer 5 and the inner side surface of the shielding layer 2. The filling strips 3 are also made of elastic materials and are prone to undergo adaptive deformation, but generally are not made of foaming materials because the cross-section of the filling strips 3 preferably does not become smaller when under pressure, so as to stably confine the two elastic layers 5 inside the shielding layer 2. Inside the filling strips 3, there is a tensile core 4 which can be made of nylon fiber into a stranded wire with a diameter of about one millimeter, and can effectively improve the tensile performance of the whole wire. The tensile core 4 forms a wire-passing channel 301 inside the filling strips 3, which is naturally formed during the process of making the filling strips 3 from thermoplastic materials.

[0030] Each elastic layer 5 wraps a conductive core 7 through an inner rubber sleeve 6. Therefore, the two conductive cores 7 are completely isolated. Each conductive core 7 includes a number of aluminum wire cores 701, and an insulating paint layer 702 is wrapped around each aluminum wire core 701, so that the aluminum wire cores 701 are insulated from each other. The whole wire has good electrical conductivity. Generally, the number of aluminum wire cores 701 in the two conductive cores 7 is equal.

[0031] The elastic layer 5 is wrapped with an outer rubber sleeve 1 which is also made of wear-resistant rubber material. Inside the outer rubber sleeve 1, there is a deformation cavity 102 which is not connected to the wire-bundling cavity 101. The cross-section of the deformation cavity 102 is arc-shaped, and there are two deformation cavities 102 which are symmetric about the rounded-rectangle wire-bundling cavity 101. It can generate deformation when the wire is under pressure to provide a buffering effect for the internal conductive core 7 inside and reduce the probability of cross-section deformation of the conductive core 7 under pressure.

[0032] Working principle: When the wire is squeezed, the outer rubber sleeve 1 with certain elasticity and strength is compressed first. There is air inside the deformation cavity 102, and both ends are sealed. The inner cavity of the deformation cavity 102 is compressed, and the internal air pressure increases to resist the external squeezing force, reducing the pressure on the elastic layer 5 wrapped by the shielding layer 2. The elastic layer 5 continues to absorb the deformation, and the pressure is dispersed through the inner rubber sleeve 6 with relatively weaker deformation ability, thereby preventing the conductive core 7 from being deformed under pressure and ensuring the power transmission efficiency of the wire after being pressed.

[0033] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, there will be various changes and improvements to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A compression-resistant and corrosion-resistant rubber-insulated wire, characterized in that: It includes a conductive core (7), an inner rubber sleeve (6) is wrapped outside the conductive core (7), an elastic layer (5) is wrapped outside the inner rubber sleeve (6), an outer rubber sleeve (1) is wrapped outside the elastic layer (5), and a deformation cavity (102) is provided inside the outer rubber sleeve (1), which is adapted to generate deformation when being pressed to provide a buffering effect for the conductive core (7).

2. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to claim 1, wherein: The elastic layer (5) is divided into two parts, and a shielding layer (2) is wrapped outside the two elastic layers (5) together.

3. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to claim 2, wherein: Filler strips (3) are arranged inside the shielding layer (2), and there are also two filler strips (3), and the two filler strips (3) are located between the two elastic layers (5).

4. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to claim 3, characterized in that: A tensile core (4) is wrapped inside the filler strip (3), and the tensile core (4) forms a wire threading channel (301) inside the filler strip (3).

5. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to claim 4, wherein: Each elastic layer (5) wraps a conductive core (7) through an inner rubber sleeve (6).

6. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to claim 5, wherein: The conductive core (7) includes a plurality of aluminum wire cores (701), and an insulating paint layer (702) is wrapped outside each aluminum wire core (701).

7. The compression-resistant and corrosion-resistant rubber-insulated electric wire according to any one of claims 2 to 6, wherein: A wire bundling cavity (101) is provided inside the outer rubber sleeve (1), and the shielding layer (2) is made of aluminum foil and is closely attached to the inner wall of the wire bundling cavity (101).

8. The compression-resistant and corrosion-resistant rubber-insulated wire according to claim 7, characterized in that: The cross-section of the deformation cavity (102) is arc-shaped, and there are two deformation cavities (102), and the two deformation cavities (102) are symmetrical about the wire bundling cavity (101).

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