CN220121545U - Multi-core power cable - Google Patents

Abstract

The utility model relates to a multi-core power cable which comprises five conductors, wherein the cross section of one conductor is circular, four conductors are uniformly distributed around the circular conductor, the cross section of the whole body formed by the four conductors and the circular conductor is circular, each conductor is wrapped with an insulating layer, filling ropes are arranged in gaps among a plurality of insulating layers, and the circular outside formed by the five conductors is sequentially wrapped with a wrapping layer, an inner liner layer, an armor layer and an outer sheath. The arrangement of the filling rope ensures the whole circular integrity of the cable and improves the strength of the cable. The multilayer protective layer can protect the conductor from being damaged by external force, can also isolate external moisture and sunlight, and improves the strength of the cable and the protection performance of the conductor. The reliability of the cable is enhanced, and the service life of the cable is effectively prolonged.

Description

Multi-core power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to a multi-core power cable.

Background

With the development of society, cables are widely applied to production, transportation, daily life and constructional engineering, and the main functions of the cables are transmission of electric energy, signal and electromagnetic conversion, so that the cables play a vital role in work and life of people.

The cable must have fine intensity and reliability in the long-term use of using, and the aluminium silk cable in prior art just very easily appears the broken wire phenomenon in processing or use, intensity and tensile strength are serious not enough. Therefore, it is necessary to provide a cable with multiple protective layers, high strength, safety and reliability.

Disclosure of Invention

The utility model provides a multi-core power cable for solving the problem of insufficient strength and tensile resistance of the cable in the prior art.

The utility model provides a multi-core power cable for realizing the purpose, which comprises five conductors, wherein the cross section of one conductor is circular, the four conductors are uniformly distributed around the circular conductor, the cross section of the whole body formed by the four conductors and the circular conductor is circular, each conductor is wrapped with an insulating layer, filling ropes are arranged in gaps among a plurality of insulating layers, and the circular outside formed by the five conductors is sequentially wrapped with a wrapping layer, an inner liner layer, an armor layer and an outer sheath.

In some embodiments, 4 fill cords are provided between the insulating layer outside the four conductors and the insulating layer outside the circular conductor.

In some embodiments, 4 fill cords are provided between the tape layer and the insulating layer outside the four conductors.

In some embodiments, the wrapping tape layer is formed by overlapping and covering a plurality of layers of inorganic glass fiber tapes and mica tapes.

In some embodiments, the inner liner material is polyethylene.

In some embodiments, the armor layer is a double galvanized steel strip.

In some embodiments, the outer jacket material is a polyolefin.

The utility model has the beneficial effects that:

the utility model discloses a four conductor evenly distributed is around a circular conductor, and its holistic cross section of five conductors is circular. The outside of five conductors has all set up the insulating layer, is equipped with the filling rope in the gap between a plurality of insulating layers, has guaranteed the whole circular shape wholeness of cable, has improved the intensity of cable. The circular outside that five conductors formed still coats in proper order has band layer, inner liner, armor and oversheath, and the setting of multilayer inoxidizing coating can protect the conductor not receive the damage of external force, can also play the isolation to external moisture, sunshine, has also improved the protectiveness to the conductor when having improved the intensity of cable. The reliability of the cable is enhanced, and the service life of the cable is effectively prolonged.

Drawings

Fig. 1 is a schematic diagram of a multi-core power cable according to the present utility model.

110, conductors in the drawing; 120. an insulating layer; 130. a tape layer; 140. an inner liner layer; 150. an armor layer; 160. an outer sheath; 170. and (5) filling the rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, a multi-core power cable includes five conductors 110, wherein the cross section of one conductor 110 is circular, four conductors 110 are uniformly distributed around the circular conductor 110, the whole cross section formed by the four conductors 110 and the circular conductor 110 is circular, each conductor 110 is wrapped with an insulating layer 120, filling ropes 170 are arranged in gaps among the insulating layers 120, the exterior of the circular shape formed by the five conductors 110 is sequentially wrapped with a wrapping tape layer 130, an inner liner layer 140, an armor layer 150 and an outer sheath 160, the multi-core power cable has a high flame retardant effect, has good inhibition performance on toxic smoke, enhances the reliability of the cable, and effectively prolongs the service life of the cable.

In some embodiments of the present utility model, 4 fill cords 170 are provided between the insulating layer 120 outside the four conductors 110 and the insulating layer 120 outside the circular conductors 110. 4 filling ropes 170 are arranged between the wrapping layer 130 and the insulating layers 120 outside the four conductors 110, so that the overall circular integrity of the cable is ensured, and meanwhile, the strength of the cable is improved.

In some embodiments of the present utility model, the tape layer 130 is formed by overlapping and wrapping a plurality of inorganic glass fiber ribbons and mica ribbons.

Specifically, the wrapping tape layer 130 is made of a mica tape and a glass fiber tape which are overlapped and wrapped and resistant to high temperature, has the advantages of high flame retardance and good heat insulation, and plays a role in protecting an internal structure in the combustion process.

In some embodiments of the present utility model, the material of inner liner 140 is polyethylene, which has good stability and a wax-like feel. The inner liner 140 serves to protect the tape layer 130, the insulating layer 120, and the conductor 110 from damage by the armor layer 150. Moreover, the inorganic glass fiber material of the wrapping tape layer 130 is soft, and the degree of compactness after overlapping with the mica tape cover and wrapping is also insufficient, and the appearance is uneven. Therefore, the inner liner 140 made of polyethylene is overlapped and covered outside the cable wrapping tape layer 130, so that the inner part can be fastened, and the inner stability is improved.

In some embodiments of the present utility model, the armor layer 150 employs a double-layer galvanized steel strip that can further enhance the withstand capability against external stresses.

In some embodiments of the present utility model, the outer jacket 160 material is a low smoke, halogen free polyolefin. The material has the excellent performances of environmental protection, no toxicity, low smoke, flame retardance and the like.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims (7)

1. The utility model provides a multicore power cable, its characterized in that, includes the conductor, the conductor is five, one of them the conductor cross section is circular, four the conductor evenly distributes around circular the conductor, four the conductor with circular the holistic cross section that the conductor is synthetic is circular, every all wrap up on the conductor has the insulating layer, a plurality of be equipped with the filling rope in the gap between the insulating layer, five the circular outside that the conductor formed has wrapped up band layer, inner liner, armor and oversheath in proper order.

2. The multi-core power cable of claim 1, wherein 4 filler ropes are provided between the insulating layers outside four of the conductors and the insulating layers outside the circular conductor.

3. The multi-core power cable of claim 1, wherein 4 filler ropes are provided between the tape layer and the insulating layers outside four of the conductors.

4. The multi-core power cable of claim 1, wherein the tape layer is formed by overlapping, overlapping and wrapping a plurality of layers of inorganic glass fiber tape and mica tape.

5. The multi-core power cable of claim 1, wherein the inner liner material is polyethylene.

6. The multi-core power cable of claim 1, wherein the armor layer is a double-layer galvanized steel strip.

7. The multi-core power cable of claim 1, wherein the outer jacket material is a polyolefin.