CN209822337U - Short-circuit-proof cable - Google Patents

Abstract

The utility model provides an anti-short circuit cable, including main core, secondary core, spacer sleeve, metal bundling hoop, insulating protective layer, shielding protection network, around covering, metal protective layer and outer protective layer, the center of spacer sleeve is equipped with the through-hole, is equipped with the channel that at least three intervals set up on the lateral wall, main core locates in the through-hole, secondary core locates in the channel; the main wire core with secondary wire core all wraps up outward and is equipped with insulating protective layer, the metal is tied up the hoop cover and is established respectively the secondary wire core outside, the metal is tied up the hoop and is equipped with shielding inoxidizing coating outward in proper order, around covering, metal inoxidizing coating and outer inoxidizing coating. In this application, equally divide main core and secondary core through the spacer sleeve and separate, contact between avoiding, the prevention cable is crooked and make sinle silk skew or touching, avoids the damaged back sinle silk of insulating protective layer contact and the short circuit that takes place.

Description

Short-circuit-proof cable

Technical Field

The utility model relates to a wire and cable technical field especially relates to a prevent short circuit cable.

Background

Wire and cable are wire products for transmitting electric energy, electric signals and realizing electromagnetic energy conversion. A cable generally comprises a core for transmitting power or electrical signals and a sheath for protecting and insulating. Cables having only one core and having a small diameter are generally called wires. There are also some electric wires without an insulating sheath, which are called bare wires. The cable core in the cable is made of metal materials with good electric conductivity, and usually copper (good electric conductivity) or aluminum (low cost) is used.

If the inside sinle silk of cable is not fixed, can shift, lead to sinle silk off-centre ratio high, protective layer and outer inoxidizing coating are punctureed by the electric current easily to take place the short circuit, arouse the conflagration even.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent short-circuit cable separates each sinle silk through the spacer bush, avoids the damaged back sinle silk contact of insulating protective layer and the short circuit that takes place.

In order to achieve the purpose, the utility model provides an anti-short circuit cable, which comprises a main wire core, a secondary wire core, a spacer bush, a metal bundling hoop, an insulating protective layer, a shielding protective net, a wrapping layer, a metal protective layer and an outer protective layer, wherein the center of the spacer bush is provided with a through hole, the outer side wall is provided with at least three channels which are arranged at intervals, the main wire core is arranged in the through hole, and the secondary wire core is arranged in the channels; the main wire core with secondary wire core all wraps up outward and is equipped with insulating protective layer, the metal is tied up the hoop cover and is established respectively the secondary wire core outside, the metal is tied up the hoop and is equipped with shielding inoxidizing coating outward in proper order, around covering, metal inoxidizing coating and outer inoxidizing coating.

Further, in the short-circuit prevention cable, the channel is spirally arranged along the length direction of the spacer.

Further, in the short-circuit prevention cable, a filling layer is arranged between the main wire core and the insulating protective layer, and the filling layer is a foaming layer or a flame-retardant layer.

Further, in the short-circuit prevention cable, the foaming layer is made of PE, the flame-retardant layer is made of a low-smoke halogen-free oxygen insulation material, and the extrusion forming process is adopted.

Further, in the short-circuit prevention cable, the insulating protection layer and the outer protection layer are made of any one of LCP, PI and PTFE.

Further, in the short-circuit prevention cable, the shielding protective layer is a protective net woven by copper-aluminum alloy thin wires.

Further, in the short-circuit prevention cable, the wrapping layer is made of a glass fiber tape.

Further, in the short-circuit prevention cable, the metal protective layer is made of medium or low carbon steel or low alloy steel.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: equally divide through the spacer with main sinle silk and secondary sinle silk and separate, contact between avoiding, the prevention cable is crooked and makes sinle silk skew or touching, avoids the damaged back sinle silk of insulating protective layer contact and the short circuit that takes place.

Drawings

Fig. 1 is the structure schematic diagram of the short-circuit prevention cable of the present invention.

Wherein: the cable comprises a main cable core 11, a secondary cable core 12, a filling layer 2, a spacer sleeve 3, a metal bundling hoop 4, an insulating protective layer 5, a shielding protective layer 6, a wrapping layer 7, a metal protective layer 8 and an outer protective layer 9.

Detailed Description

The short-circuit prevention cable of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the utility model provides an anti-short circuit cable, which comprises a main wire core 11, a secondary wire core 12, a spacer 3, a metal binding hoop 4, an insulating protective layer 5, a shielding protective net 6, a wrapping layer 7, a metal protective layer 8 and an outer protective layer 9, wherein the center of the spacer 3 is provided with a through hole, the outer side wall is provided with at least three semi-arc-shaped channels arranged at intervals, the main wire core 11 is arranged in the through hole, and the secondary wire core 12 is arranged in the channel; the main wire core 11 and the secondary wire core 12 are wrapped with the insulating protective layers 5, the metal bundling hoops 4 are sleeved on the outer sides of the secondary wire cores 12, and the metal bundling hoops 4 are sequentially provided with the shielding protective layers 6, the wrapping layers 7, the metal protective layers 8 and the outer protective layers 9.

Meanwhile, the channel is spirally arranged along the length direction of the spacer 3, so that the rigid strength of the spacer 3 is improved, the secondary wire core 12 has certain spinning strength, and the secondary wire core 12 is prevented from being easily moved out of the channel.

Further, in the present embodiment, a filling layer 2 is disposed between the main core 11 and the insulating protection layer 5, and the filling layer 2 is a foaming layer or a flame retardant layer. The foaming layer is made of PE, the PE is a widely used material, the mechanical strength is high, the electrical insulation performance is excellent, and the compression resistance and the electromagnetic compatibility of the cable can be improved. The flame-retardant layer is made of a low-smoke halogen-free oxygen-insulating material, is mainly filled with round materials, and is formed by extrusion forming, so that the compression resistance is improved, and the flame retardance is improved.

The insulating protective layer 5 and the outer protective layer 9 are respectively made of any one of LCP, PI and PTFE, and have the performance of improving high temperature resistance, corrosion resistance, wear resistance, pressure resistance and the like.

The shielding protective layer 6 is a protective net woven by copper-aluminum alloy thin wires.

The material around covering 7 is the glass fiber area, and the glass fiber area has not only thermal-insulated, thermal insulation performance is good, but also damp-proofing function.

The metal protective layer 8 is made of medium and low carbon steel or low alloy steel and is used for increasing the pressure resistance, and compared with a non-metal material, the steel has better strength and good toughness, so that the cable is not easy to break. Of course, both medium and low carbon steel and low alloy steel need to be subjected to necessary anticorrosion treatment, such as galvanization, blackening and the like.

To sum up, in this embodiment, the short circuit prevention cable that provides equally divides main core and secondary core through the spacer sleeve and separates, avoids the contact between, and the prevention cable is crooked and makes sinle silk skew or touching, avoids the damaged back sinle silk of insulating protective layer contact and the short circuit that takes place.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims (8)

1. The short-circuit prevention cable is characterized by comprising a main wire core, a secondary wire core, a spacer bush, a metal bundling hoop, an insulating protective layer, a shielding protective net, a wrapping layer, a metal protective layer and an outer protective layer, wherein a through hole is formed in the center of the spacer bush, at least three channels which are arranged at intervals are formed in the outer side wall of the spacer bush, the main wire core is arranged in the through hole, and the secondary wire core is arranged in the channels; the main wire core with secondary wire core all wraps up outward and is equipped with insulating protective layer, the metal is tied up the hoop cover and is established respectively the secondary wire core outside, the metal is tied up the hoop and is equipped with shielding inoxidizing coating outward in proper order, around covering, metal inoxidizing coating and outer inoxidizing coating.

2. The short-circuit prevention cable of claim 1 wherein the channel is helically disposed along the length of the spacer.

3. The short-circuit prevention cable of claim 1, wherein a filling layer is arranged between the main wire core and the insulation protection layer, and the filling layer is a foaming layer or a flame retardant layer.

4. The short-circuit-proof cable according to claim 3, wherein the foaming layer is made of PE, the flame-retardant layer is made of a low-smoke halogen-free oxygen-insulating material, and the extrusion molding process is adopted.

5. The short-circuit prevention cable according to claim 1, wherein the insulating protective layer and the outer protective layer are made of any one of LCP, PI and PTFE.

6. The short-circuit prevention cable according to claim 1, wherein the shielding protection layer is a protection net woven by copper-aluminum alloy thin wires.

7. The short-circuit prevention cable of claim 1, wherein the wrapping layer is made of glass fiber tape.

8. The short-circuit prevention cable according to claim 1, wherein the metal shielding layer is made of medium or low carbon steel or low alloy steel.