CN210200393U

CN210200393U - 10kV low-temperature-resistant overhead insulated cable

Info

Publication number: CN210200393U
Application number: CN201920691201.9U
Authority: CN
Inventors: Hengmin Zhao; 肇恒民
Original assignee: Liaoning Xuheng Cable Co Ltd
Current assignee: Liaoning Xuheng Cable Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-03-27
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a 10kV low temperature resistant aerial insulated cable, including outer protective sheath, armor, interior protective sheath, band, filling layer, heat insulating layer, low temperature resistant insulating layer, conductor shielding layer and conductor, its characterized in that: the outer protective sleeve is of an outermost structure of a cable and wraps the armor, the inner protective sleeve wraps the armor, the filling layer is arranged between the wrapping tape and the insulating sleeve, the conductor is provided with the conductor shielding layer and the heat insulation layer from inside to outside, and the low-temperature-resistant insulating layer is made of low-temperature-resistant insulating materials. Compared with the prior art, the utility model the advantage lie in: low temperature resistance, high strength, wear resistance, tear resistance, excellent electrical property and high stability.

Description

10kV low-temperature-resistant overhead insulated cable

Technical Field

The utility model relates to a power cable specifically indicates a 10kV low temperature resistant aerial insulated cable.

Background

Along with the development of the power industry, the demands and requirements of various industries on cables are increasing day by day, China has wide breadth, besides the north China central area with excellent terrain, a large number of cables need to be erected in the northwest area, in order to adapt to the particularity of the low-temperature extremely cold area, the industry also provides low-temperature-resistant requirements on the cables, and the mechanical property of the metal conductor is influenced by the low temperature of the extremely cold area all year round, so that the metal becomes brittle and is easy to break, the cables are broken, and potential safety hazards exist, and therefore, the invention of the 10kV low-temperature-resistant overhead insulated cable is imperative.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that ordinary cable is poor easy fracture and installation inconvenience resistant to low temperature.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a 10kV low temperature resistant aerial insulated cable, includes outer protective sheath, armor, interior protective sheath, band, filling layer, heat insulating layer, low temperature resistant insulating layer, conductor shielding layer and conductor, its characterized in that: the outer protective sleeve is of an outermost structure of the cable and wraps the armor, the inner protective sleeve wraps the armor, the filling layer is arranged between the wrapping tape and the temperature isolation layer, and the conductor is provided with the conductor shielding layer and the low-temperature-resistant insulating layer from inside to outside.

Compared with the prior art, the utility model the advantage lie in: the cable is internally provided with the heat insulation layer and the low-temperature insulation layer, so that the overall low-temperature resistance of the cable is improved, and the low-temperature-resistant overhead insulated cable (10kV) is good in fatigue resistance and wear resistance, excellent in electrical property and convenient to install, and has stability exceeding that of a common cable.

As an improvement, the low-temperature-resistant overhead insulated cable (10kV) adopts a double-protection-sleeve design.

As an improvement, a filling layer with a heat insulation foam as a filling material is arranged in the bag belt.

As an improvement, the low-temperature-resistant insulating sleeve is made of low-temperature-resistant insulating materials such as polyethylene and the like.

As an improvement, the heat insulation layer and the conductor shielding layer are sequentially wound outside the conductor.

Drawings

Fig. 1 is a schematic structural diagram of a 10kV low-temperature-resistant overhead insulated cable.

As shown in the figure: 1. outer protective sheath, 2, armor, 3, interior protective sheath, 4, band, 5, filling layer, 6, thermal insulation layer, 7, low temperature resistant insulating layer, 8, conductor shielding layer, 9, conductor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model discloses when concrete implementation, a 10kV low temperature resistant aerial insulated cable, including outer protective sheath 1, armor 2, inner protective sheath 3, band 4, filling layer 5, heat insulating layer 6, low temperature resistant insulating layer 7, conductor shielding layer 8 and conductor 9, its characterized in that: the outer protective sleeve 1 is of an outermost structure of a cable and wraps the armor 2, the inner protective sleeve 3 wraps the armor 2, the filling layer 5 is arranged between the wrapping tape 4 and the heat insulation layer 6, and the conductor 9 is provided with the conductor shielding layer 8 and the low-temperature-resistant insulating layer 7 from inside to outside. The armor 2 is internally and externally provided with an outer protective sleeve 1 and an inner protective sleeve 3 respectively, the wrapping tape 4 is internally provided with the filling layer 5, the low-temperature-resistant insulating layer 7 is also externally provided with the heat insulation layer 6, the conductor 9 and the low-temperature-resistant insulating layer 7 are arranged between the conductor shielding layer 8, and the low-temperature-resistant insulating layer 7 is made of a low-temperature-resistant insulating composite material.

The utility model discloses a theory of operation: the conductor is formed by finely twisting 99.9999% annealing anaerobic superfine copper wires, the tensile strength is high, the conductivity is high, the operation is stable, a conductor shielding layer is wound outside the conductor, the conductor shielding layer is formed by weaving 99.9999% annealing anaerobic superfine bare copper/tinned copper wires in a high density mode, a semiconductor material wraps the outside of the conductor and is combined with the inner surface of the insulator to form a shielding structure, air gaps between the conductor and the insulator can be effectively filled, and air gap discharge is prevented.

The low-temperature-resistant insulating layer is made of special cold-resistant butyronitrile composite PVC and imported special PE composite materials, the main components are polyethylene and the like, the low-temperature-resistant insulating material has low-temperature toughness, can ensure high mechanical strength and processing technological performance at low temperature, can ensure that a cable does not crack caused by thermal stress in the process from room temperature to operating temperature, and can resist cold and heat circulation from the room temperature to the operating temperature. The design of adding the thermal insulation layer outside the low temperature resistant insulating layer can further reduce the damage of low temperature to the metal conductor inside the cable. The material filled in the filling layer is high-grade polyester cotton and special reinforcing ribs. The inner and outer protective sleeves are made of special polyurethane PUR composite materials, and the armor between the inner and outer protective sleeves is used for preventing the inner structure of the cable from being damaged during transportation and installation and is used as the outer protective structure of the low-temperature-resistant overhead cable together with the inner and outer protective sleeves.

The technical parameters are as follows: 1 temperature range: the working voltage of the cable with the bending radius of 6x the outer diameter of the cable is 3 under the conditions of minus 60 ℃ to plus 80 ℃: 10KV and below

Furthermore, 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, and in the description of the invention, "plurality" means two or more unless a limitation is explicitly stated.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, 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.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above 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.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. The utility model provides a 10kV low temperature resistant aerial insulated cable, includes outer protective sheath (1), armor (2), interior protective sheath (3), band (4), filling layer (5), thermal insulation layer (6), low temperature resistant insulating layer (7), conductor shielding layer (8) and conductor (9), its characterized in that: outer protective sheath (1) be the most exterior structure of cable, the parcel is in armor (2) outside, inner protective sheath (3) the parcel in armor (2), band (4) and thermal insulation layer (6) between be equipped with filling layer (5), conductor (9) be equipped with from inside to outside conductor shielding layer (8) with low temperature resistant insulating layer (7).

2. The 10kV low-temperature-resistant aerial insulated cable according to claim 1, characterized in that: an outer protective sleeve (1) and an inner protective sleeve (3) are respectively arranged inside and outside the armor (2).

3. The 10kV low-temperature-resistant aerial insulated cable according to claim 1, characterized in that: the packing layer (5) is arranged in the wrapping tape (4).

4. The 10kV low-temperature-resistant aerial insulated cable according to claim 1, characterized in that: the low-temperature resistant insulating layer (7) is also provided with the heat insulation layer (6).

5. The 10kV low-temperature-resistant aerial insulated cable according to claim 1, characterized in that: the conductor shielding layer (8) is arranged between the conductor (9) and the low-temperature-resistant insulating layer (7).

6. The 10kV low-temperature-resistant aerial insulated cable according to claim 1, characterized in that: the low-temperature-resistant insulating layer (7) is made of a low-temperature-resistant insulating composite material.