阅读说明：本技术 一种承压防触电的电缆 (Pressure-bearing electric shock-proof cable ) 是由 康传生 于 2021-09-06 设计创作，主要内容包括：一种承压防触电的电缆,包括导体、绝缘层、阻燃层、防水层、发泡层和外护套,于所述导体上包覆绝缘层,与所述绝缘层上包覆阻燃层,于所述阻燃层上包覆防水层,于所述防水层外有间隙地套设外护套,于所述防水层和所述外护套的间隙中注入流体状态的发泡胶形成发泡层,于所述发泡层中设置至少一层承压结构。该电缆可较大提高自身的承压性能,且在电缆断裂后,通过发泡胶流出发泡,对导体的端面进行隔离,避免导体暴露可能导致的触电隐患。(A pressure-bearing electric shock-proof cable comprises a conductor, an insulating layer, a flame-retardant layer, a waterproof layer, a foaming layer and an outer sheath, wherein the insulating layer is coated on the conductor, the flame-retardant layer is coated on the insulating layer, the waterproof layer is coated on the flame-retardant layer, the outer sheath is sleeved outside the waterproof layer with a gap, foaming glue in a fluid state is injected into the gap between the waterproof layer and the outer sheath to form the foaming layer, and at least one layer of pressure-bearing structure is arranged in the foaming layer. This cable can greatly improve the pressure-bearing performance of self, and after the cable fracture, flows out the foaming through the foaming adhesive, keeps apart the terminal surface of conductor, avoids the conductor to expose the electric shock hidden danger that probably leads to.)

1. The cable is characterized in that the conductor is coated with the insulating layer, the insulating layer and the flame-retardant layer are coated on the insulating layer, the flame-retardant layer is coated on the flame-retardant layer, the waterproof layer is coated on the flame-retardant layer, the outer sheath is sleeved outside the waterproof layer with a gap, foaming glue in a fluid state is injected into the gap between the waterproof layer and the outer sheath to form the foaming layer, and at least one layer of pressure-bearing structure is arranged in the foaming layer.

2. The pressure-bearing electric shock-proof cable according to claim 1, wherein a layer of the pressure-bearing structure is arranged in the foaming layer, the pressure-bearing structure comprises elastic pieces, the elastic pieces are arranged at intervals in the axial direction and the circumferential direction, one end of each elastic piece is arranged on the outer side of the waterproof layer, and the other end of each elastic piece is in contact with the outer sheath.

3. The cable of claim 1, wherein two layers of the pressure-bearing structure are disposed in the foaming layer, namely an inner layer pressure-bearing structure and an outer layer pressure-bearing structure, the inner layer pressure-bearing structure is an inner layer elastic member, the outer layer pressure-bearing structure is an outer layer elastic member, a spacer is disposed between the inner layer elastic member and the outer layer elastic member, one end of the inner layer elastic member is disposed outside the waterproof layer, the other end of the inner layer elastic member is in contact with the spacer, one end of the outer layer elastic member is disposed outside the spacer, and the other end of the outer layer elastic member is in contact with the outer sheath.

4. A pressure-bearing, electric shock resistant cable as claimed in claim 3, wherein said inner and outer resilient members are spaced axially and circumferentially and said inner and outer resilient members are staggered axially and circumferentially.

5. The pressure-bearing electric shock resistant cable according to claim 1 wherein a sealing layer is disposed between said foam layer and said outer jacket.

6. A pressure-bearing, electric shock resistant cable as claimed in claim 5, wherein an armor layer is provided between the sealing layer and said outer jacket.

Technical Field

The invention relates to the technical field of cables, in particular to a pressure-bearing and electric shock-proof cable.

Background

The power cable basically comprises a conductor, an insulating layer and a protective layer, wherein the conductor is a conductive part of the power cable and is used for transmitting electric energy, the conductor is a main part of the power cable, the insulating layer is used for electrically isolating the conductor from the ground and conductors of different phases, the insulating layer is an indispensable component in the structure of the power cable and ensures the transmission of the electric energy, and the protective layer is used for protecting the power cable from the invasion of external impurities and moisture and preventing external force from directly damaging the power cable. Therefore, the cable has the characteristics of internal electrification and external insulation.

However, many cables at present have poor pressure-bearing performance, and particularly in a severe working environment, when a large pressure needs to be borne, the cables often have insufficient pressure-bearing performance, so that the wires in the cables are damaged, and a large amount of resources are wasted. In addition, when the cable is broken due to an accident, an electric shock is easily caused by touching the exposed conductor by mistake by a passer-by, and even if the exposed conductor is not touched, the risk of a stepping electric shock is caused by being within the range of the stepping electric shock.

Therefore, in view of the above drawbacks, there is a need for an improved cable to solve the deficiencies of the prior art.

Disclosure of Invention

The invention aims to provide a pressure-bearing electric shock-proof cable which can greatly improve the self pressure-bearing performance, and after the cable is broken, the foaming glue flows out for foaming to isolate the end face of a conductor, so that the electric shock hidden danger possibly caused by conductor exposure is avoided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pressure-bearing electric shock-proof cable comprises a conductor, an insulating layer, a flame-retardant layer, a waterproof layer, a foaming layer and an outer sheath, wherein the insulating layer is coated on the conductor, the flame-retardant layer is coated on the insulating layer, the waterproof layer is coated on the flame-retardant layer, the outer sheath is sleeved outside the waterproof layer in a clearance manner, foaming glue in a fluid state is injected into a clearance between the waterproof layer and the outer sheath to form the foaming layer, and at least one layer of pressure-bearing structure is arranged in the foaming layer; when the cable is broken, the foaming glue in a fluid state flows out for foaming, so that the conductor at the broken port is prevented from being exposed, and the electric shock caused by accidental touch of personnel is prevented;

correspondingly, a layer of the pressure-bearing structure is arranged in the foaming layer, the pressure-bearing structure comprises elastic pieces, the elastic pieces are arranged at intervals in the axial direction and the circumferential direction, one end of each elastic piece is arranged on the outer side of the waterproof layer, and the other end of each elastic piece is in contact with the outer sheath; the elastic piece is ensured to be in a natural shaping state, and when external acting force is applied, the external force is reduced through the elasticity of the elastic piece, so that the bearing capacity of the cable is improved;

correspondingly, two layers of pressure-bearing structures are arranged in the foaming layer, namely an inner layer pressure-bearing structure and an outer layer pressure-bearing structure, the inner layer pressure-bearing structure is an inner layer elastic piece, the outer layer pressure-bearing structure is an outer layer elastic piece, a spacer sleeve is arranged between the inner layer elastic piece and the outer layer elastic piece, one end of the inner layer elastic piece is arranged on the outer side of the waterproof layer, the other end of the inner layer elastic piece is contacted with the spacer sleeve, one end of the outer layer elastic piece is arranged on the outer side of the spacer sleeve, and the other end of the outer layer elastic piece is contacted with the outer sheath; the pressure bearing capacity of the cable is further improved by arranging two layers of elastic pieces;

correspondingly, the inner layer elastic pieces and the outer layer elastic pieces are arranged at intervals in the axial direction and the circumferential direction, and the inner layer elastic pieces and the outer layer elastic pieces are staggered in the axial direction and the circumferential direction, so that the uniformity and the stability of pressure bearing are improved;

correspondingly, a sealing layer is arranged between the foaming layer and the outer sheath, so that the sealing protection of the foaming layer is further improved;

correspondingly, an armor layer is arranged between the sealing layer and the outer sheath, so that the pressure resistance of the cable is further improved.

The invention has the beneficial effects that:

1) by arranging the pressure bearing structure, the pressure loaded on the cable can be dispersed and borne, and the pressure bearing capacity of the cable is improved;

2) through setting up the foaming layer, when the cable breaks, the foaming glue foaming inflation that flows out in the foaming layer blocks the section of fracture cable until the solidification, realizes keeping apart the terminal surface of conductor, prevents to electrocute.

Drawings

FIG. 1 is a side perspective view of a pressure-bearing, electric shock resistant cable according to one embodiment of the present invention;

in the figure:

1. a conductor; 2. an insulating layer; 3. a flame retardant layer; 4. a waterproof layer; 5. a foamed layer;

61. an inner layer elastic member; 62. an outer elastic member; 63. a spacer sleeve;

7. an outer sheath.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1, in an embodiment of the present invention, a pressure-bearing electric shock-proof cable includes a conductor 1, an insulating layer 2, a flame-retardant layer 3, a waterproof layer 4, a foaming layer 5, and an outer sheath 7, the insulating layer 2 is coated on the conductor 1, the flame-retardant layer 3 is coated on the insulating layer 2, the waterproof layer 4 is coated on the flame-retardant layer 3, the outer sheath 7 is sleeved outside the waterproof layer 4 with a gap, a fluid-state foaming adhesive is injected into the gap between the waterproof layer 4 and the outer sheath 7 to form a foam 5, before the injection, a vacuum pumping process is required, and in order to further improve the sealing protection of the foaming layer 5, a sealing layer is disposed between the foaming layer 5 and the outer sheath 7, at least one layer of pressure-bearing structure is disposed in the foaming layer 5, and the sequence of operations is as follows: a pressure-bearing structure is arranged between the waterproof layer 4 and the outer sheath 7, and then the foaming layer 5 is formed by vacuumizing and injecting foaming glue, so that the pressure-bearing structure is prevented from being difficult to arrange after the foaming layer 5 is formed. In this embodiment, two layers of pressure-bearing structures are arranged in the foaming layer 5, which are an inner layer pressure-bearing structure and an outer layer pressure-bearing structure, respectively, the inner layer pressure-bearing structure is an inner layer elastic member 61, the outer layer pressure-bearing structure is an outer layer elastic member 62, a spacer 63 is arranged between the inner layer elastic member 61 and the outer layer elastic member 62, one end of the inner layer elastic member 61 is arranged outside the waterproof layer 4, the other end of the inner layer elastic member contacts with the spacer 63, one end of the outer layer elastic member 62 is arranged outside the spacer 63, the other end of the outer layer elastic member contacts with the outer sheath 7, it is ensured that the inner layer elastic member 61 and the outer layer elastic member 62 are in a natural shaping state, and a compression margin exists, so as to realize a pressure-bearing function, the inner layer elastic member 61 and the outer layer elastic member 62 are arranged at intervals in the axial direction and the circumferential direction, and the inner layer elastic member 61 and the outer layer elastic member 62 are arranged in a staggered arrangement in the axial direction and the circumferential direction, so as to improve uniformity and stability of pressure-bearing. In addition, an armor layer is arranged between the sealing layer and the outer sheath 7, so that the pressure resistance of the cable is further improved.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.