CN216749410U - Super gentle mica tape mineral insulation power cable - Google Patents

Abstract

The utility model relates to an ultra-soft mica tape mineral insulation power cable which sequentially comprises a conductor, an insulation layer, a buffer layer, a corrugated copper sheath and an outer sheath from inside to outside, wherein the conductor is an annealed copper conductor. The ultra-soft mica tape mineral insulation power cable provided by the utility model has the advantages that the corrugated copper sheath is used, the characteristic of higher melting point of copper can be utilized, so that the flame temperature can be quickly taken away even if the cable encounters flame, the internal insulation layer is kept stable, and the better insulation performance is kept.

Description

Super gentle mica tape mineral insulation power cable

Technical Field

The utility model relates to the field of wires and cables, in particular to an ultra-soft mica tape mineral insulation power cable.

Background

With the continuous progress and improvement of scientific and technical and economic conditions, the infrastructure is pushed away and updated deeply, wherein an important item is to replace and update aged transmission cables, especially residential power cables in old cities. In places with centralized personnel, such as hospitals, airports, subways, shopping malls, schools and the like, the electric load is higher and higher, but some cables are used overtime, and a fire disaster is very easy to happen.

The cable used in such occasions is required to have good conductivity and long service life, and also has to meet the requirements of easy laying, adaptation to various complicated laying positions and harsh wiring postures, so that the cable with high flexibility and high fire-resistant grade is required.

SUMMERY OF THE UTILITY MODEL

Based on this, there is a need to provide an ultra-flexible mica tape mineral insulated power cable, which addresses at least one of the problems mentioned above.

The super-flexible mica tape mineral insulation power cable provided by the utility model sequentially comprises a conductor, an insulation layer, a buffer layer, a corrugated copper sheath and an outer sheath from inside to outside, wherein the conductor is an annealed copper conductor.

In one embodiment, the insulating layer is a mica tape mineral insulating layer.

In one embodiment, the buffer layer is a mica tape buffer layer.

In one embodiment, the sheath layer is a halogen-free low-smoke high-flame-retardant polyolefin sheath.

In one embodiment, the conductor is a multi-core annealed copper conductor, and the diameter of each core of the annealed copper conductor is 0.16-0.41 mm.

In one embodiment, the ratio of the thickness of the corrugated copper sheath to the thickness of the outer sheath is 1/2-1.

In one embodiment, the thickness of the buffer layer is 1/3-1/2 of the thickness of the insulating layer.

The technical scheme provided by the embodiment of the utility model has the following beneficial technical effects:

the ultra-soft mica tape mineral insulation power cable provided by the utility model has the advantages that the corrugated copper sheath is used, the characteristic of higher melting point of copper can be utilized, so that the flame temperature can be quickly taken away even if the cable encounters flame, the internal insulation layer is kept stable, and the better insulation performance is kept.

Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic cross-sectional structure view of an ultra-flexible mica tape mineral insulated power cable according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Possible embodiments of the utility model are given in the figures. The utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein by the accompanying drawings. The embodiments described by way of reference to the drawings are illustrative for the purpose of providing a more thorough understanding of the present disclosure and are not to be construed as limiting the present invention. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.

It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples.

The super-flexible mica tape mineral insulation power cable provided by the utility model comprises a conductor, an insulation layer, a buffer layer, a corrugated copper sheath and an outer sheath from inside to outside in sequence as shown in figure 1, wherein the conductor is an annealed copper conductor. The conductor adopts a 6 th copper conductor in GB/T3956-2008, and the conductor is an annealed copper conductor and has good flexibility. The corrugated copper is the existing material purchased in the market, and the size specification of the corrugated copper sheath is determined according to the specific size of the cable. The wrinkle copper sheath layer, the copper melting point is 1080 ℃, can isolate the burning things which may cause a fire disaster and insulating layer when the conflagration takes place, can play radial waterproof and resistance to compression ability to the cable. Optionally, the ratio of the thickness of the corrugated copper sheath to the thickness of the outer sheath is 1/2-1.

The ultra-soft mica tape mineral insulation power cable provided by the utility model can utilize the characteristic of higher melting point of copper by using the corrugated copper sheath, so that the temperature of flame can be quickly taken away even if the cable encounters flame, an internal insulation layer is kept stable, and better insulation performance is kept. Optionally, the conductor is a multi-core annealed copper conductor, and the diameter of each core annealed copper conductor is 0.16-0.41 mm.

Optionally, in a certain embodiment of the present application, the insulating layer is a mica tape mineral insulating layer. The insulating layer adopts mineral mica tape, the fire resistance of the insulating layer can meet the requirements of BS6387 and GB/T19216, and good insulating property can be kept when the flame temperature is above 1050 ℃, so that the cable can be normally electrified when a fire disaster happens. In another embodiment of the present application, the buffer layer is a mica tape buffer layer. The mica tape buffer layer is made of calcined mica tapes, and the material has incombustibility, can also play a role in protecting, insulating and buffering, and has a good fireproof effect.

Optionally, in a specific implementation manner of the present application, the sheath layer is a halogen-free low-smoke high-flame-retardant polyolefin sheath. The halogen-free low-smoke high-flame-retardant polyolefin sheath material is adopted, the oxygen index is higher than 38 during combustion, and the cable can reach the flame-retardant A-grade requirement in GB/T19666-2019; meanwhile, the corrugated copper sheath is isolated from air and is not oxidized. Optionally, the thickness of the buffer layer is 1/3-1/2 of the thickness of the insulating layer.

Additional aspects and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, the steps, measures, and schemes in the various operations, methods, and flows disclosed in the present application in the prior art can also be alternated, modified, rearranged, decomposed, combined, or deleted.

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 application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (7)

1. The super-soft mica tape mineral insulation power cable is characterized by sequentially comprising a conductor, an insulation layer, a buffer layer, a corrugated copper sheath and an outer sheath from inside to outside, wherein the conductor is an annealed copper conductor.

2. The ultra-flexible mica tape mineral insulated power cable of claim 1, wherein the insulation layer is a mica tape mineral insulation layer.

3. The ultra-flexible mica tape mineral insulated power cable of claim 1, wherein the buffer layer is a mica tape buffer layer.

4. The ultra-flexible mica tape mineral insulated power cable of claim 1, wherein the outer jacket is a halogen-free low-smoke high-flame-retardant polyolefin jacket.

5. The ultra-soft mica tape mineral insulated power cable according to claim 1, wherein the conductor is a multi-core annealed copper conductor, and the diameter of each core of the annealed copper conductor is 0.16-0.41 mm.

6. The ultra-flexible mica tape mineral insulated power cable according to claim 1, wherein the ratio of the thickness of the corrugated copper sheath to the thickness of the outer sheath is 1/2-1.

7. The ultra-soft mica tape mineral insulated power cable of claim 1, wherein the buffer layer has a thickness of 1/3-1/2 of the thickness of the insulation layer.

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