Pressure-resistant flame-retardant cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a pressure-resistant flame-retardant cable, which comprises a flame-retardant protective outer layer, a buffer lining and a cable body. A placement inner cavity is formed in the flame-retardant protection outer layer; the buffering lining is connected to the inner wall of the containing inner cavity. A supporting inner cavity is formed in the buffering lining. At least one limiting convex body is arranged on the inner wall of the supporting inner cavity; the cable body is connected to the inner wall of the supporting inner cavity; and the limiting convex body is convexly arranged towards the cable body. According to the utility model, the pressure-resistant performance and the flame-retardant performance of the cable can be effectively improved, so that the safety and the stability of use are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a pressure-resistant flame-retardant cable. Background Art

[0002] Although the wire and cable industry is only a supporting industry, it accounts for 1 / 4 of the output value of China's electrical industry. It has many product types and a wide range of applications, involving industries such as electricity, construction, communications, and manufacturing, and is closely related to all sectors of the national economy. Wires and cables are also called the "arteries" and "nerves" of the national economy. They are essential basic equipment for transmitting electrical energy, transmitting information, and manufacturing various motors, instruments, and meters to achieve electromagnetic energy conversion. They are essential basic products in the future electrification and information society. The optimization design and improvement of cable products are the basis for the development of wires and cables.

[0003] However, some existing cables only have one of the functions of pressure resistance or flame retardancy, and their safety and stability in use are poor, and they cannot be used in more environments. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure-resistant flame-retardant cable to solve any of the above-mentioned technical problems in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pressure-resistant flame-retardant cable comprises a flame-retardant protective outer layer, a buffer lining and a cable body; a placement cavity is provided in the flame-retardant protective outer layer; the buffer lining is connected to the inner wall of the placement cavity; a supporting cavity is provided in the buffer lining; at least one limiting protrusion is provided on the inner wall of the supporting cavity; the cable body is connected to the inner wall of the supporting cavity; and the limiting protrusion is arranged to protrude toward the cable body.

[0007] Preferably, the buffer lining is a rubber buffer lining.

[0008] Preferably, the cable body comprises at least two cable bodies; all the cable bodies are wound together as a whole; at least part of the outer wall of each cable body abuts against the inner wall of the buffer lining; and assembly gaps are provided between all the cable bodies.

[0009] Preferably, the limiting protrusion is an arc-shaped limiting block; the arc-shaped limiting block is arranged between two adjacent cable bodies.

[0010] Preferably, an installation gap is provided between the limiting protrusion and the cable body; at least one abutting protrusion is provided on the surface of the limiting protrusion; and the abutting protrusion is arranged in the installation gap and abuts against the outer surface of the cable body.

[0011] Preferably, the thickness H of the abutting protrusion satisfies: 0.1 cm≤H≤0.6 cm.

[0012] Preferably, the flame-retardant protective outer layer comprises a protective outer layer, a first flame-retardant layer, a buffer inner layer and a second flame-retardant layer which are arranged in sequence from the outside to the inside; and the buffer lining is connected to the inner wall of the second flame-retardant layer.

[0013] Preferably, the protective outer layer is a neoprene outer layer.

[0014] Preferably, the first flame retardant layer is an inner layer of aluminum hydroxide; and / or the second flame retardant layer is an inner layer of aluminum hydroxide.

[0015] Preferably, the buffer inner layer is a rubber inner layer.

[0016] The beneficial effect of the utility model is that the technical scheme can effectively improve the pressure resistance and flame retardant properties of the cable through the flame retardant effect of the outermost flame retardant protective outer layer combined with the buffering and decompression effect of the inner buffer lining, thereby improving the safety and stability of use; at the same time, through the limiting effect of the limiting protrusion on the cable body, it can improve the stability of assembly while ensuring the convenience of assembly of the cable body, thereby improving the safety and stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will refer to the attached Figures 1 to 4 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0018] Figure 1 A cross-sectional view of a pressure-resistant flame-retardant cable according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of a buffer lining of a pressure-resistant flame-retardant cable according to an embodiment of the utility model;

[0020] Figure 3 This is a partial enlarged view of the buffer lining of the pressure-resistant flame-retardant cable according to one embodiment of the utility model;

[0021] Figure 4 This is a schematic structural diagram of a flame retardant protective outer layer according to an embodiment of the present invention.

[0022] In the figure: 1-flame retardant protective outer layer; 11-protective outer layer; 12-first flame retardant layer; 13-buffer inner layer; 14-second flame retardant layer; 2-buffer lining; 21-limiting protrusion; 22-abutting protrusion; 23-support inner cavity; 24-installation gap; 3-cable body; 301-cable line body; 31-assembly gap. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] The following is combined with Figure 1 to Figure 4The utility model is further described in detail, but it is not intended to limit the utility model.

[0029] like Figure 1 As shown, in one embodiment of the utility model, the pressure-resistant flame-retardant cable comprises a flame-retardant protective outer layer 1, a buffer lining 2 and a cable body 3; a placement cavity is provided in the flame-retardant protective outer layer 1; the buffer lining 2 is tightly connected to the inner wall of the placement cavity; a supporting cavity 23 is provided in the buffer lining 2; at least one limiting protrusion 21 is provided on the inner wall of the supporting cavity 23; the cable body 3 is connected to the inner wall of the supporting cavity 23; and the limiting protrusion 21 is arranged to protrude toward the cable body 3.

[0030] The technical solution of the utility model can effectively improve the pressure resistance and flame retardant properties of the cable through the flame retardant effect of the outermost flame retardant protective outer layer combined with the buffering and decompression effect of the inner buffer lining, thereby improving the safety and stability of use; at the same time, through the limiting effect of the limiting convex body on the cable body, it can improve the stability of assembly while ensuring the convenience of assembly of the cable body, thereby improving the safety and stability of use.

[0031] Specifically, in some embodiments, the buffer liner 2 is a rubber buffer liner; the buffer rubber liner is made by a mold; that is, the buffer stress of the buffer rubber liner can effectively improve the pressure resistance of the cable itself; and the high friction of the inner wall of the buffer rubber liner can ensure the assembly stability of the cable body 3. Rubber refers to a highly elastic polymer material with reversible deformation, which is elastic at room temperature, can produce a large deformation under a very small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature (Tg) and a large molecular weight, greater than hundreds of thousands.

[0032] Specifically, in some embodiments, Figure 1 and 2 As shown, the cable body 3 includes at least two cable bodies 301; all the cable bodies 301 are wound together; at least part of the outer wall of each cable body 301 abuts against the inner wall of the buffer lining 2; and an assembly gap 31 is provided between all the cable bodies 301. Figure 2 As shown, there are four cable bodies 301, which are wound together. The structure is to wind multiple cable bodies 301 into a cable harness, and there is an assembly gap 31 in the middle of the cable harness that has a stress buffering effect, thereby improving the assembly stability of the cable body 3.

[0033] Specifically, in some embodiments, Figure 1 and2 As shown, the limiting protrusion 21 is an arc-shaped limiting block; the arc-shaped limiting block is arranged between two adjacent cable bodies 301. The structure separates the two adjacent cable bodies 301 along the winding boundary line through the arc-shaped limiting block to achieve a clear layering effect, thereby achieving a positioning and limiting function. Figure 2 and 3 As shown, an installation gap 24 is provided between the limiting protrusion 21 and the cable body 301; at least one abutting protrusion 22 is provided on the surface of the limiting protrusion 21; and the abutting protrusion 22 is arranged in the installation gap 24 and abuts against the outer surface of the cable body 301. In other words, the outer surface of the cable body 301 is subjected to multi-point friction limiting by a plurality of abutting protrusions 22, which can ensure the smoothness of the cable body 3 during insertion and assembly, and ensure the stability after assembly.

[0034] Specifically, in some embodiments, the thickness H of the abutting protrusion 22 is: 0.1 cm ≤ H ≤ 0.6 cm. This structure can further effectively achieve multi-point friction limiting on the outer surface of the cable body 301 through the relatively small abutting protrusion 22, which can ensure the smoothness of the cable body 3 during insertion and assembly, and ensure stability after assembly.

[0035] Specifically, in some embodiments, Figure 1 and 4 As shown, the flame retardant protective outer layer 1 includes a protective outer layer 11, a first flame retardant layer 12, a buffer inner layer 13 and a second flame retardant layer 14 arranged in sequence from the outside to the inside; the buffer inner lining 2 is connected to the inner wall of the second flame retardant layer 14. This structure realizes the staggered pressure-resistant flame retardant functional layer of flame retardant + pressure-resistant buffer + flame retardant + pressure-resistant buffer inner lining, which can further improve the pressure resistance and flame retardant performance of the cable, thereby improving the safety and stability of use.

[0036] Specifically, in some embodiments, the protective outer layer 11 is a neoprene outer layer; the first flame retardant layer 12 is an aluminum hydroxide inner layer; the second flame retardant layer 14 is an aluminum hydroxide inner layer; and the buffer inner layer 13 is a rubber inner layer. Rubber refers to a highly elastic polymer material with reversible deformation, which is elastic at room temperature, can produce a large deformation under a very small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature (Tg) and a large molecular weight, which is greater than hundreds of thousands.

[0037] Principle of production and processing: First, a straight semi-finished product of the buffer liner 2 is produced by a mold, and then the two ends of the straight semi-finished product are hot-melted to form the buffer liner 2, which is annular for standby use. Then the cable body 301 is transported to the rotating winding mechanism for rotation processing to form the cable body 3. Next, the cable body 3 is transported and inserted into the supporting inner cavity 23 of the buffer liner 2; finally, the protective outer layer 11, the first flame retardant layer 12, the buffer inner layer 13 and the second flame retardant layer 14 arranged from the outside to the inside in the flame retardant protective outer layer 1 are processed to the outer surface of the buffer liner 2 respectively.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0039] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A pressure-resistant flame-retardant cable, characterized in that: It includes a flame-retardant protective outer layer, a buffer lining and a cable body; a placement cavity is provided in the flame-retardant protective outer layer; the buffer lining is connected to the inner wall of the placement cavity; a supporting cavity is provided in the buffer lining; the inner wall of the supporting cavity is provided with at least one limiting protrusion; the cable body is connected to the inner wall of the supporting cavity; and the limiting protrusion is arranged to protrude toward the cable body.

2. The pressure-resistant flame-retardant cable according to claim 1, characterized in that: The buffer lining is a rubber buffer lining.

3. The pressure-resistant flame-retardant cable according to claim 1, characterized in that: The cable body comprises at least two cable bodies; all the cable bodies are wound together as a whole; at least part of the outer wall of each cable body abuts against the inner wall of the buffer lining; and assembly gaps are provided between all the cable bodies.

4. The pressure-resistant flame-retardant cable according to claim 3, characterized in that: The limiting convex body is an arc-shaped limiting block; the arc-shaped limiting block is arranged between two adjacent cable bodies.

5. The pressure-resistant flame-retardant cable according to claim 3 or 4, characterized in that: An installation gap is provided between the limiting protrusion and the cable body; at least one abutting protrusion is provided on the surface of the limiting protrusion; and the abutting protrusion is arranged in the installation gap and abuts against the outer surface of the cable body.

6. The pressure-resistant flame-retardant cable according to claim 5, characterized in that: The thickness H of the abutting protrusion satisfies: 0.1 cm≤H≤0.6 cm.

7. The pressure-resistant flame-retardant cable according to claim 1, characterized in that: The flame retardant protective outer layer comprises a protective outer layer, a first flame retardant layer, a buffer inner layer and a second flame retardant layer which are arranged in sequence from the outside to the inside; the buffer inner lining is connected to the inner wall of the second flame retardant layer.

8. The pressure-resistant flame-retardant cable according to claim 7, characterized in that: The protective outer layer is a neoprene outer layer.

9. The pressure-resistant flame-retardant cable according to claim 7, characterized in that: The first flame retardant layer is an aluminum hydroxide inner layer; and / or the second flame retardant layer is an aluminum hydroxide inner layer.

10. The pressure-resistant flame-retardant cable according to claim 7, characterized in that: The buffer inner layer is a rubber inner layer.

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