CN214753054U

CN214753054U - Cold-resistant power cable

Info

Publication number: CN214753054U
Application number: CN202121164140.4U
Authority: CN
Inventors: 冷念波; 吴小松
Original assignee: Chongqing Rapt Electricity Industrial Co ltd
Current assignee: Chongqing Rapt Electricity Industrial Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-16
Anticipated expiration: 2031-05-27

Abstract

The utility model relates to the technical field of cables, a cold-resistant power cable is disclosed, it is outer including cable inner core and cable, the cable inner core with be equipped with the filling layer between the cable is outer, cable inner core from interior to exterior includes conductive core, inner insulating layer and inner sheath layer in proper order, conductive core comprises many tin-plated copper conductor transposition, the outer from interior to exterior of cable is equipped with interior armor, cold-resistant layer, waterproof layer, fire-retardant layer, outer insulating layer, first armor, oversheath layer and second armor in proper order, the cable inner core is equipped with threely, and is three cable inner core equipartition sets up in the filling layer, it is three the central line department of cable inner core is equipped with the enhancement core. The utility model has the advantages of better low temperature resistance, fire-retardant to the improvement cable that can be better flexibility.

Description

Cold-resistant power cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a cold-resistant power cable.

Background

The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a conducting wire for transmitting power or information from one place to another place, and the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables. However, the cable has more and more occasions and large temperature difference, and the performance of the cable is unstable at low temperature, so that the use requirement cannot be met.

Disclosure of Invention

To the not enough of above-mentioned prior art, the technical problem that this patent application will solve is how to provide a cold-resistant power cable that cold-resistant, resistant use, longe-lived, indestructible, flexibility is high.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a cold-resistant power cable, includes that cable inner core and cable are outer, the cable inner core with be equipped with the filling layer between the cable is outer, cable inner core from interior to exterior includes conductive core, inner insulating layer and inner sheath layer in proper order, conductive core comprises many tin-plated copper conductor transposition, the outer from interior to exterior of cable is equipped with interior armor, cold-resistant layer, waterproof layer, fire-retardant layer, outer insulating layer, first armor, oversheath layer and second armor in proper order, the cable inner core is equipped with threely, and is three the cable inner core equipartition sets up in the filling layer, it is three the central line department of cable inner core is equipped with the enhancement core.

Like this, the cable inner core comprises conductive core, internal insulation layer and inner sheath layer, can insulate and protect conductive core, and internal insulation layer can improve conductive core insulating effect, improves performance, increase of service life, improves the security. Outer from interior to exterior of cable is equipped with interior armor in proper order, cold-resistant layer, the waterproof layer, fire-retardant layer, the outer insulating layer, first armor, oversheath layer and second armor, interior armor can provide sufficient intensity and rigidity for the cable inner core, set up first armor and second repacking layer respectively in the inside and outside both sides of oversheath layer, can wholly provide sufficient hardness and rigidity for the cable, ensure that it does not receive the destruction of external physics effort, the electric conductive property of protection cable, can provide certain bending again, with the actual installation that satisfies the cable, and play certain guard action to the inner structure, both can avoid it electrically conductive, can provide the buffering for its bending again, guarantee life. The cold-resistant layer, the waterproof layer and the flame-retardant layer can achieve the effects of flame retardance, water resistance and cold resistance.

Preferably, the waterproof layer is made of polyurethane through extrusion coating.

Preferably, the inner armor layer, the first armor layer and the second armor layer are all galvanized steel strips.

Thus, the galvanized steel strip is processed by the procedures of pickling, galvanizing, packaging and the like of common steel strips, and has good corrosion resistance.

Preferably, the outer sheath layer and the inner sheath layer are made of low-temperature halogen-free flame-retardant polyolefin materials.

Thus, the heat insulation material can expand rapidly in case of fire and has good heat insulation effect.

Preferably, the cold-resistant layer is a polybutadiene rubber layer.

And optimally, the inner insulating layer and the outer insulating layer are both made of ethylene propylene rubber materials.

Thus, the paint has low cost, excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical property, oil filling property and normal temperature fluidity.

Preferably, the filling layer is an asbestos flame-retardant filling layer.

Thus, the asbestos flame-retardant filling layer is applied to filling of the multi-core cable so as to enable the cable to be fire-resistant and round.

Preferably, the resistivity of the tin-plated copper conductors is less than 0.017241 omega mm 2/m.

Thus, the resistivity is small, so that the cable conductivity is high.

Preferably, the flame-retardant layer is woven by glass fiber materials, and the weaving density is 97.5% -98.5%.

Therefore, the flame-retardant layer is woven by the glass fiber material, and the glass fiber material has the main performances of high temperature resistance, corrosion resistance, high strength and the like, so that the heat dissipation performance, the high temperature resistance and the strength of the cable are improved.

The utility model has the advantages that:

the utility model has the advantages of better low temperature resistance, fire-retardant to the improvement cable that can be better flexibility.

Drawings

Fig. 1 is a schematic structural view of a cold-resistant power cable of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1, a cold-resistant power cable, it is outer including cable inner core and cable, the cable inner core with be equipped with filling layer 4 between the cable is outer, cable inner core from interior to exterior includes conductive core 1, internal insulation layer 2 and inner sheath layer 3 in proper order, conductive core comprises many tin-plated copper conductor transposition, the outer from interior to exterior of cable is equipped with interior armor 6, cold-resistant layer 7, waterproof layer 8, fire-retardant layer 9, outer insulating layer 10, first armor 11, oversheath layer 12 and second armor 13 in proper order, the cable inner core is equipped with threely, and is three cable inner core equipartition sets up in the filling layer 4, it is three the central line department of cable inner core is equipped with strengthens core 5, and the material of strengthening the core is the soft steel wire of tin plating.

Like this, the cable inner core comprises conductive core, internal insulation layer and inner sheath layer, can insulate and protect conductive core, and internal insulation layer can improve conductive core insulating effect, improves performance, increase of service life, improves the security. The outer from interior to exterior of cable is equipped with interior armor 6 in proper order, cold-resistant layer 7, waterproof layer 8, fire-retardant layer 9, outer insulating layer 10, first armor 11, oversheath 12 and second armor 13, interior armor can provide sufficient intensity and rigidity for the cable inner core, set up first armor and second repacking layer respectively in the inside and outside both sides of oversheath, can provide sufficient hardness and rigidity for the cable is whole, ensure that it does not receive the destruction of external physical effort, the electric conductive property of protection cable, can provide certain bending again, in order to satisfy the actual installation of cable, and play certain guard action to inner structure, both can avoid its electric conduction, can provide the buffering for its bending again, guarantee life. The cold-resistant layer, the waterproof layer and the flame-retardant layer can achieve the effects of flame retardance, water resistance and cold resistance.

In this embodiment, the waterproof layer 8 is made of polyurethane by extrusion.

In this embodiment, the inner armor layer 6, the first armor layer 11, and the second armor layer 13 are all galvanized steel strips.

In this embodiment, the outer sheath layer 12 and the inner sheath layer 3 are made of low-temperature halogen-free flame-retardant polyolefin material.

In this embodiment, the cold-resistant layer 7 is a polybutadiene rubber layer.

In this embodiment, the inner insulating layer 2 and the outer insulating layer 10 are made of ethylene propylene rubber.

In this embodiment, the filling layer 4 is an asbestos flame-retardant filling layer.

In the embodiment, the resistivity of the tin-plated copper conductors is less than 0.017241 omega mm 2/m.

Thus, the resistivity is small, so that the cable conductivity is high.

In this embodiment, the flame-retardant layer 9 is woven by using a glass fiber material, and the weaving density is 97.5% -98.5%.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. The utility model provides a cold-resistant power cable, its characterized in that, it is outer including cable inner core and cable, the cable inner core with be equipped with filling layer (4) between the cable is outer, cable inner core from interior to exterior includes conductive core (1), internal insulation layer (2) and inner sheath layer (3) in proper order, conductive core comprises many tinned copper conductor transposition, the outer from interior to exterior of cable is equipped with interior armor (6), cold-resistant layer (7), waterproof layer (8), fire-retardant layer (9), outer insulating layer (10), first armor (11), oversheath layer (12) and second armor (13) in proper order, the cable inner core is equipped with threely, three the cable inner core equipartition sets up in filling layer (4), it is three the central line department of cable inner core is equipped with strengthens core (5).

2. Cold-resistant power cable according to claim 1, characterized in that said water-proof layer (8) is extruded from polyurethane.

3. The cold-resistant power cable of claim 1, wherein the inner armor layer (6), the first armor layer (11) and the second armor layer (13) are galvanized steel strips.

4. The cold-resistant power cable as claimed in claim 1, wherein the outer sheath layer (12) and the inner sheath layer (3) are made of low temperature halogen-free flame retardant polyolefin material.

5. The cold-resistant power cable as claimed in claim 1, wherein the cold-resistant layer (7) is a polybutadiene rubber layer.

6. The cold-resistant power cable as claimed in claim 1, wherein the inner insulating layer (2) and the outer insulating layer (10) are made of ethylene propylene rubber.

7. A cold-resistant power cable according to claim 1, wherein the filler layer (4) is a asbestos flame-retardant filler layer.

8. The cold-resistant power cable as claimed in claim 1, wherein the flame-retardant layer (9) is woven from a glass fiber material, and the weaving density is 97.5% -98.5%.