CN212570500U - Novel cable - Google Patents

Abstract

The utility model provides a novel cable relates to stores pylon technical field. The utility model discloses a sheath, above-mentioned sheath are worn to be equipped with many wires in, and above-mentioned wire overcoat is equipped with the insulating layer, and above-mentioned insulating layer includes fire-retardant polyvinyl chloride layer. The utility model provides a current flame retarded cable easily become invalid, problem with relatively high costs.

Description

Novel cable

Technical Field

The utility model relates to the technical field of cables, particularly, relate to a novel cable.

Background

Cables are used for transmitting electric power, communication (including control) signals, and as conductors, connection lines, and various components indispensable in electric devices.

A cable is typically a rope-like object made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. The device is erected in the air or installed underground or underwater for telecommunication or power transmission.

On one hand, most of flame-retardant cables used in the market achieve the flame-retardant effect through the flame retardance of the sheath, but the cable fails after the sheath is completely combusted; on the other hand, a small number of flame-retardant cables used in the market at present are flame-retardant sheaths and irradiation crosslinking polyolefin insulation layers to achieve the flame-retardant effect, and the cost is relatively high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel cable has solved the easy problem that became invalid, cost are relatively high of current flame retarded cable.

The embodiment of the utility model is realized like this:

the utility model provides a novel cable, includes the sheath, wears to be equipped with many wires in the above-mentioned sheath, and above-mentioned wire overcoat is equipped with the insulating layer, and above-mentioned insulating layer includes fire-retardant polyvinyl chloride layer.

In some embodiments of the present invention, a gap between the insulating layer and the sheath is filled with a filling layer.

In some embodiments of the present invention, the filler layer comprises a thermally conductive filler layer.

In some embodiments of the present invention, a carrying layer is disposed between the filling layer and the sheath, and the carrying layer has a function of heat transfer, heat absorption or heat dissipation.

In some embodiments of the present invention, the heat conductive packing layer is made of heat conductive packing, the heat conductive packing layer can be made of aluminum oxide, magnesium oxide or heat conductive glue, and the supporting layer is made of heat dissipating material, heat absorbing material or heat conducting material.

In some embodiments of the present invention, a winding belt is disposed between the bearing layer and the sheath.

In some embodiments of the present invention, a contact surface between the bearing layer and the filling layer is a curved surface.

In some embodiments of the present invention, the number of the wires is 7, and the wires are copper core conductors.

In some embodiments of the present invention, a gap exists between adjacent wires.

In some embodiments of the present invention, the insulating layer is a flame retardant polyvinyl chloride layer.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

the utility model provides a novel cable, includes the sheath, wears to be equipped with many wires in the above-mentioned sheath, and above-mentioned wire overcoat is equipped with the insulating layer, and above-mentioned insulating layer includes fire-retardant polyvinyl chloride layer.

The utility model discloses an effect: the flame-retardant polyvinyl chloride layer is made of flame-retardant soft polyvinyl chloride. The polyvinyl chloride resin is originally a high flame-retardant polymer. The cable made of flame-retardant polyvinyl chloride ensures that the cable does not lose the control and monitoring functions after most of the cable (using common polyvinyl chloride as an insulating layer) is burnt in the sheath; on the other hand, the cost of a small part of cable (formed by the flame-retardant sheath and the radiation cross-linked polyolefin insulation) can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a novel cable according to an embodiment of the present invention.

Icon: 1-lead, 2-insulating layer, 3-filling layer, 4-heat conducting filler layer, 5-bearing layer, 6-winding band and 7-sheath.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1, the embodiment provides a novel cable, which solves the problems of easy failure and relatively high cost of the conventional flame-retardant cable.

The utility model provides a novel cable, includes sheath 7, wears to be equipped with many wires 1 in the above-mentioned sheath 7, and 1 overcoat of above-mentioned wire is equipped with insulating layer 2, and above-mentioned insulating layer 2 includes fire-retardant polyvinyl chloride layer.

The utility model discloses an effect: the flame-retardant polyvinyl chloride layer is made of flame-retardant soft polyvinyl chloride. The polyvinyl chloride resin is originally a high flame-retardant polymer. The cable made of flame-retardant polyvinyl chloride ensures that the cable does not lose the control and monitoring functions after most of the cable (common polyvinyl chloride is used as the insulating layer 2) is burnt in the sheath 7; on the other hand, the cost of a small part of cable (formed by the flame-retardant sheath 7 and the radiation cross-linked polyolefin insulation) can be reduced.

In some embodiments of the present invention, a gap between the insulating layer 2 and the sheath 7 is provided with a filling layer 3.

In the above embodiment, the filling layer 3 is used for filling as the name implies, because the cable core of the cable is formed by twisting a plurality of insulated wire cores (a single wire core is formed by the conducting wire 1 and the insulating layer 2), gaps are inevitably generated in the cabling process, if the gaps are not densely filled with materials, the cable core of the cable is unstable, the service life of the cable in the using process is shortened, and when the cable extrudes the sheath 7, the material of the cable sheath 7 is inevitably embedded in the middle of the cable core, so that the cost of the cable is increased.

The filling layer 3 has the following functions: the roundness of the cable is ensured, the twisted shape of the surface of the cable is avoided when the sheath 7 is extruded, and the excessive use of the sheath 7 material in the extrusion process of the cable sheath 7 is reduced. For the cable filling layer 3 there are typically: PP cords, hemp cords, or recycled rubber, which are generally relatively inexpensive materials. The material can be used as a cable filling material, and has the characteristics of no adverse effect on the insulated cable core, no hygroscopicity, difficult shrinkage, no corrosion and the like.

Here, the filling layer 3 is a generally relatively inexpensive material such as a PP cord, a hemp cord, or a recycled rubber, and is only a part of the filling layer 3 which can be selected, and the filling layer 3 is not limited thereto, and in other embodiments, the filling layer 3 may be applied thereto as long as the above-described object can be achieved.

In some embodiments of the present invention, the above-mentioned filler layer 3 comprises a heat conductive filler layer 4.

In the above embodiment, the heat conducting packing layer 4 has the purpose of heat conduction, and the whole heat that makes wire 1 and insulating layer 2 constitute is transmitted to through filling layer 3 fast the utility model discloses an outside, the heat of current cable is dispelled the heat step by inside to outside (wire 1-heat insulation layer-filling layer 3-sheath 7), and the radiating effect on wire 1 and the heat insulation layer is not good, and the thermal effect (higher temperature) time on wire 1 and the heat insulation layer is longer, easily influences the performance of wire 1. The heat conducting filler layer 4 is arranged in the filler layer 3, so that heat of the lead 1 and the heat insulating layer is quickly transferred to the outer side of the cable for heat dissipation, and the cable has the advantage of good heat dissipation effect.

Here, a first method of filling the layer 3 is: the filling layer 3 is a heat-conducting filling layer 4, the contact area between the heat-conducting filling layer 4 and the cable core (the whole of the lead 1 and the insulating layer 2) is the largest, the heat-conducting efficiency of the heat-conducting filling layer 4 is increased to a certain extent, the heat of the cable core (the whole of the lead 1 and the insulating layer 2) is rapidly transmitted to the outside of the cable, and the heat transfer efficiency between the cable core (the whole of the lead 1 and the insulating layer 2) and the outside of the cable (mainly referred to as a sheath 7) is better.

Mode two of the filling layer 3: the part of the filling layer 3 is a heat-conducting filling layer 4, the part of the filling layer is a PP rope, a hemp rope or a recycled rubber processing material and other common cheaper materials, so that the filling layer 3 has the purpose of heat transfer under the condition of ensuring the roundness of the cable, the heat of a cable core (the whole of the lead 1 and the insulating layer 2) can be quickly transferred to the outside of the cable (mainly the sheath 7), and meanwhile, the combined type has the advantage of low cost.

In some embodiments of the present invention, a bearing layer 5 is disposed between the filling layer 3 and the sheath 7, and the bearing layer 5 has a function of heat transfer, heat absorption, or heat dissipation.

In the above embodiment, the bearing layer 5 is disposed between the filling layer 3 and the sheath 7, and the bearing layer 5 and the sheath 7 as a whole as a bearing of the cable heat is a carrier of the cable for heat exchange with the outside. The heat of the cable is quickly concentrated on the supporting body and the sheath 7, so that the heat effect time in the cable core (the whole of the lead 1 and the insulating layer 2) is short, and the cable core (the whole of the lead 1 and the insulating layer 2) is protected. The carrier has the functions of heat transfer, heat absorption or heat dissipation, and the carrier can receive the heat transferred from the filling layer 3 to realize the heat carrying.

It should be noted here that the carrier layer 5 and the sheath 7 together absorb most of the heat of the cable, so as to reduce the load that the sheath 7 alone bears, on the one hand, to suitably increase the service life of the sheath 7, and on the other hand, to achieve rapid heat dissipation.

In some embodiments of the present invention, the heat conductive filler layer 4 is made of heat conductive filler, the heat conductive filler layer 4 can be made of aluminum oxide, magnesium oxide or heat conductive glue, and the carrier layer 5 is made of heat dissipation material, heat absorption material or heat transfer material.

In the above embodiments, the heat conductive filler is a filler added to the base material to increase the heat conductivity of the material, and the commonly used heat conductive filler is alumina, magnesia, zinc oxide, aluminum nitride, boron nitride, silicon carbide, or the like; wherein, micron-grade alumina and silicon micropowder are taken as main bodies, and nanometer alumina and nitride are taken as filling powder in the high heat conduction field; zinc oxide is mostly used as a filler of heat conductive paste (heat conductive silicone grease). The aluminum oxide, the magnesium oxide or the heat-conducting glue is added into the base material (the filling layer 3), so that the filling layer 3 has the advantage of rapid heat conduction.

It should be noted that the heat conductive filler is alumina, magnesia, or a heat conductive adhesive, and may be alumina alone, magnesia alone, or a heat conductive adhesive alone, or any combination of alumina, magnesia, or a heat conductive adhesive. The above-mentioned heat-conducting filler is selected only from a part of the materials of the heat-conducting filler layer 4, and is not limited to the heat-conducting filler layer 4, and in other embodiments, the heat-conducting filler layer 4 may be used herein as long as the above-mentioned purpose can be achieved.

In some embodiments of the present invention, a winding belt 6 is disposed between the bearing layer 5 and the sheath 7.

In the above embodiment, the winding tape 6 winds one to two tape protection layers, also called cushion layers, between the carrier layer 5 and the sheath 7. The method mainly has the following effects: the protective insulating layer 2 or the filling layer 3 can be damaged by the uncooked armor when the cable is armored, and has the functions of buffering and padding; II, secondly: in the using process of the cable, the cable insulating layer 2 or the filling layer 3 has the functions of corrosion resistance, aging resistance and the like due to different materials, and the winding belt 6 comprises polyimide films, polytetrafluoroethylene films, polyester films, nylon belts and the like.

In some embodiments of the present invention, the contact surface between the supporting layer 5 and the filling layer 3 is a curved surface.

In the above-mentioned embodiment, the contact surface between bearer layer 5 and the filling layer 3 is the curved surface, can increase the area of contact of filling layer 3 and bearer layer 5, makes filling layer 3's heat conduction efficiency better, improves the utility model discloses a heat conduction efficiency.

In some embodiments of the present invention, the number of the wires 1 is 7, and the wires 1 are copper core conductors.

In the above embodiment, the middle part of the inner side of the sheath 7 is provided with the lead 1, six cables are uniformly distributed on the ring side of the lead 1, and the lead 1 is a copper core conductor which has the advantages of high strength, low resistivity, low ductility, low energy consumption, good stability, convenient construction, low voltage loss, fatigue resistance, oxidation resistance, corrosion resistance, low heating temperature and the like.

It should be noted here that the wire 1 is a copper core conductor, and only a part of the material of the wire 1 can be selected, and the wire 1 is not limited, and in other embodiments, as long as the material can perform the function of a cable, the material can be applied here.

In some embodiments of the present invention, a certain gap exists between adjacent wires 1.

In the above-mentioned embodiment, adjacent wire 1 has certain clearance, makes the heat change between adjacent and is transmitted away by filling layer 3, makes the utility model discloses a radiating effect is better. When the contact design of the lead 1 is avoided, the heat inside the lead 1 is not easy to be transferred out.

In some embodiments of the present invention, the insulating layer 2 is a flame retardant polyvinyl chloride layer.

In the above embodiment, the insulating layer 2 is made of the flame retardant polyvinyl chloride layer, which can improve the stability of the cable and improve the flame retardant effect of the cable, and it should be noted that the insulating layer 2 can be not only the flame retardant polyvinyl chloride layer, but also a combination of the flame retardant polyvinyl chloride layer and other materials, and can be applied to the insulating layer 2 as long as the purpose of flame retardancy can be achieved.

To sum up, the utility model provides a novel cable, it has following beneficial effect at least:

the utility model discloses an effect: the flame-retardant polyvinyl chloride layer is made of flame-retardant soft polyvinyl chloride. The polyvinyl chloride resin is originally a high flame-retardant polymer. The cable made of flame-retardant polyvinyl chloride ensures that the cable does not lose the control and monitoring functions after most of the cable (common polyvinyl chloride is used as the insulating layer 2) is burnt in the sheath 7; on the other hand, the cost of a small part of cable (formed by the flame-retardant sheath 7 and the radiation cross-linked polyolefin insulation) can be reduced.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a novel cable, its characterized in that, includes the sheath, wear to be equipped with many wires in the sheath, the wire overcoat is equipped with the insulating layer, the insulating layer includes fire-retardant polyvinyl chloride layer, the insulating layer with clearance between the sheath is equipped with the filling layer, the filling layer includes the heat conduction packing layer.

2. The novel cable of claim 1, wherein a carrier layer is disposed between the filler layer and the sheath, and the carrier layer has a function of heat transfer, heat absorption or heat dissipation.

3. The novel cable of claim 2, wherein the heat conductive filler layer is made of heat conductive filler, the heat conductive filler layer is made of aluminum oxide, magnesium oxide or heat conductive glue, and the bearing layer is made of heat dissipation material, heat absorption material or heat transfer material.

4. The novel cable of claim 2 wherein a tape is disposed between the carrier layer and the jacket.

5. The novel cable of claim 2 wherein the contact surface of the carrier layer and the filler layer is curved.

6. The novel cable of claim 1, wherein the number of wires is 7, and the wires are copper core conductors.

7. The novel cable of claim 1 wherein a gap exists between adjacent ones of said conductors.

8. The novel cable of claim 1 wherein the insulating layers are all flame retardant polyvinyl chloride layers.

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